The Existentialist Views of Hamlet Essay - 756 Words

The Existentialist Views of Hamlet Do we matter? Will anything we do endure? These are questions from existentialism. The dictionary defines existentialism as the plight of the individual who must assume ultimate responsibility for his acts of free will without any certain knowledge of what is right or wrong or good or bad (Merriam Webster). In the play Hamlet by William Shakespeare, Hamlet struggles with the concept that nothing from our lives last and time grinds everything away. Hamlets major conflict was his existentialist view of the world. Does a prince of Denmark have any worth if Alexander died, Alexander was buried, Alexander returneth into dust; the dust is earth; of earth we make loam; and why of that†¦show more content†¦Even with this proof, Hamlet will not kill Claudius during prayer because he believes his decision will matter and he must choose wisely. In the graveyard, Hamlet saw peoples skulls and wondered what the couriers compliments or the jesters tricks had brought them but another spot in the earth. Hamlet saw the acts of well respected men not protect them from the grave and anonymity when he said, This fellow might be ins time a great buyer of land, with his statutes his recognizances, his fines, his double vouchers, his recoveries: is this the fine of his fines, and the recovery of his recoveries, to have his fine pate full of fine dirt? will his vouchers vouch him no more of his purchases, and double ones too, than the length and breadth of a pair of indentures? The very conveyances of his lands will hardly lie in this box; and must the inheritor himself have no more ( V. i. 98-103). Hamlets inaction appeared in his relationship with Ophelia. He admitted at her grave that he loved her but he did not attempt to have more than a physical relationship. Hamlets fear of action led to other problems. Hamlet was so obsessed with his lack of action and the worthlessness of life that he contemplates suicide asking, For who could bear the whips and scorns of time ( III. i. 69-70). He believes he would be foolish to suffer through his life when he will simply beShow MoreRelatedEssay on Existentialism in Unknown Places1409 Words   |  6 Pagescertain characteristics and behaviors that describe existentialist views. Throughout today’s world, there are examples of it everywhere, it’s found in movies, books, songs, and just people in general. Existentialists are known to think and do for themselves only. They believe that to understand what it means to be human requires understanding of themselves first. Some very well known pieces of entertainment existentialism is found in are: Hamlet by William Shakespeare, The Metamorphosis by Franz KafkaRead More Hamlet, the Existentialist Essay1082 Words   |  5 PagesShakespeare’s Hamlet is a tragic play about murder, betra yal, revenge, madness, and moral corruption. It touches upon philosophical ideas such as existentialism and relativism. Prince Hamlet frequently questions the meaning of life and the degrading of morals as he agonizes over his father’s murder, his mother’s incestuous infidelity, and what he should or shouldn’t do about it. At first, he is just depressed; still mourning the loss of his father as his mother marries his uncle. After he learnsRead MoreThe Relationship Between Ophelia and Hamlet: William Shakespeare970 Words   |  4 PagesThe play Hamlet, by William Shakespeare, looks at the issue of madness and how it effects the characters of the play. Madness can be looked at from very different perspectives, such as strong and uncontrollable emotions, a person’s desires, and also a persons mental stability. Throughout the play, the audience is questioning the sanity of the main character, Hamlet, as he goes on his quest for revenge. The people around hi m also show signs of madness, such as Ophelia and Claudius, but in differentRead MoreHamlets Existential Crisis1429 Words   |  6 PagesWhen looking at Hamlet, one could say that William Shakespeare put the play together as a very cathartic tragedy. The emotional result of dealing with so many deaths brings on a plethora of emotions which are not usually felt in a typical play. Hamlet begins not with the normal prosperity and good fortune as do most tragedies, but with a more stifling and depressing sort of mood (Tekany 115). However, something else could be said about this play as well. The play centers on Hamlet and his existentialRead MoreHamlet And Laertes By William Shakespeare1469 Words   |  6 PagesShakespeare’s characters Hamlet and Laertes, in the play Hamlet, attempt to attain revenge for their fathers, but contrast in their approaches to achieving revenge, and their view of life as a whole, their failures revealing the inevitability of fate. Just as Hamletâ₠¬â„¢s inaction hinders him from achieving his goal of killing Claudius, Laertes’s impetuosity similarly leads him astray from his goal their inability to achieve these goals. The power of fate is thereby revealed through the futility of humanRead MoreUnderstanding Existentialism Essay864 Words   |  4 PagesThe dictionary defines existentialism as an individual’s experience filled with isolation in a hostile universe where a human being attempts to find true self and the meaning of life through free will, choice, and personal responsibility. Hamlet is an existentialist character who believes that he is forced to avenge his father’s death and the hatred builds in his heart because of the many betrayals which direct him towards a senseless life and constant thoughts about suicide; this ultimately leads toRead MoreThe Concept of Bad Faith in the Philosophy of Sartre1335 Words   |  6 PagesUnderstanding the concept of bad faith means to comprehend the existent ialist philosophy of Sartre. The concept of bad faith forms the basis of his moral psychology. Also, bad faith continued to remain main theme throughout Sartre’s philosophical works. The concept emphasizes that bad faith, similar to all our attitudes, determines the manner in which the world and every person within it appears. Bad faith shapes all our beliefs, views, and actions specifically as agents in the world. In this contextRead MoreComparision Of Hamlet With Rosencrantz And Guildenstern Are Dead1306 Words   |  6 PagesRosencrantz and Guildenstern are Dead (R and G†¦) by Tom Stoppard is a transformation of Shakespeare’s Hamlet that has been greatly influenced due to an external contextual shift. The sixteenth century Elizabethan historical and social context, accentuating a time of questioning had specific values which are transformed and altered in Stoppard’s Existential, post two-world wars twentieth century historical and social context. The pro cesses of transformation that are evident allow the shifts in ideasRead MoreThe, No Scene Of Violence Exists For Its Own Sake1350 Words   |  6 Pagesand action. Hamlet is as much a story of emotional conflict, paranoia, and self-doubt as it is one of revenge and tragedy. The protagonist, Prince Hamlet of Denmark, is instructed by his slain father’s ghost to enact vengeance upon his uncle Claudius, whose treacherous murder of Hamlet’s father gave way to his rise to power. Overcome by anguish and obligation to avenge his father’s death, Hamlet ultimately commits a number of killings throughout the story. However, we are not to view the characterRead MoreCharacteristics Of A Shakespearean Tragedy1716 Words   |  7 Pages Characteristics of a Shakespearean tragedy: (Identify three and give an example/connection from Hamlet and a short explanation of the importance) 1. A central character who has status and prosperity A defining characteristic of Shakespearean tragedies is a powerful and high ranking protagonist. Hamlet fits this bill perfectly, being the crown prince of the kingdom of Denmark and thus wielding enormous power. One of the reasons why protagonists of Shakespearean tragedies are characters of status

Greek Mythology And The Lightening Thief - 1940 Words

It is a lovely day out, the bright sun shining down, the smell of beautiful flowers, the sounds of birds chirping. Then, a chariot sweeps across a meadow, taking one unfortunate goddess, deep deep down to the frightful underworld, to be seated by the King of the Dead, Hades. Greek mythology is very interesting and can also be very interestingly weird. In the lightening thief we see the very interesting part about Greek mythology. The lightening thief uses the modern day society to tell the adventure packed story. In this essay I will give you an overview of Greek mythology, along with a summary and analysis of The Lightening Thief. Hero is the main theme of this story. We see the theme of hero throughout various parts of 2 the story. Courage, Love and sacrifice, and man vs. society all connect back to the idea of heroism. Cultural and Historical Context The Lightening Thief story is set in modern day time. Around 2000-2004 is where it all starts. Although the setting is modern day, he author is telling Greek mythology, which began in 500 BC. Greek mythology is very interestingly different. Greek mythology also includes a number of monsters and strange creatures such as the one-eyed Cyclops in the Odysseus story, a gigantic boar in the fabled Kalydonian hunt, sphinxes, giant snakes, fire-breathing bulls and more. These creatures may represent chaos and lack of reason, for example, the centaurs - halfman and half-horse. (Cartwright, Greek Mythology.) Greek Mythology,Show MoreRelatedThe Lightning Thief Character Analysis Essay836 Words   |  4 Pages The Lightening Thief takes place everywhere, in the sky, sea, underwater and all across the United States. Some of the places are New York, Sally’s apartment in Queens and also Montauk Beach. The story takes place during the present time. Protagonist Name: Percy Jackson is one of the protagonists in The Lightning Thief. He is a young boy around 12 years old who has dyslexia and ADHD. Percy is also the main character. Perry is smart, brave, loyal and stands up for his beliefs. He also finds outRead MoreGreek Mythology in Percy Jackson and the Lightning Thief1451 Words   |  6 PagesGreek Mythology in Percy Jackson and the Lightning Thief Rick Riordan’s ‘Percy Jackson and the Lightning Thief’ focuses on Greek mythology and interprets this into a children’s story. Throughout the story, there are many references and adaptations to mythological tales, and each one is portrayed in a different way. Riordan writes this story as though Hercules, Zeus and Poseidon were still around today, and this would be the effect they would have on people in this day and age. Percy Jackson isRead More Using the Gothic Genre in Frankenstein and A Modern Prometheus2288 Words   |  10 Pagesof Iapetus (Iapetus is the son Uranus and Gaia. Iapetus wife is Clymene, with whom he has four children - Atlas, Menoetius, Prometheus and Epimetheus. He is occasionally called the husband of Asia or Asopis) who was one of the Titans (In Greek mythology, the Titans are a race of godlike giants who were considered to be the personifications of the forces of nature. They are the twelve children (six sons and six daughters) of Gaia and Uranus.). He tricked the gods into eating bare bones instead

Business Process Architecture Management †Myassignmenthelp.Com

Question: Discuss About The Business Process Architecture Management? Answer: Introducation The article is by author Oscar Barros on Business Process Architecture, week 4 article. The architecture of the Business Processes (BP) of an organization is said to be the process it contains and the relationships between them. Business architecture provides a general understanding of an organization and is needed to align the strategic objectives and tactics for management. It describes the functional decomposition of an enterprise value chain and provides value streams (Harmon 2014). It is critical in all business process modeling work that is for process automation. However, the authors (Oscar Barros 2007) explained the role of general architecture, Business development corresponds to the macro-process Business planning, design chain, enabling processes the support resource management. The general architecture of BP gives a proposal to build BP Ontology that includes these macro-processes like Macroprocess1, Macroprocess2, Macroprocess3 and Macroprocess4, he value chain macro-process, support resource management macro-process, new capabilities development macro-process and Business planning Macro process respectively are explained. Each macro-process has an internal structure as execution, management and state status. The value chain is equivalent to the combination of consumer and the value chain. Supplier management is a process to make sure that all the resources needs for implementation of programming schedule are present. The support service is hence related to the Support Resource Management (Barros and Julio 2011). This paper describes a variety of business process framework that is available to adopt regarding an organizations business process architecture. The author emphasizes the final objective of general Business Process architecture. The methodologies has been used are presented to allow integrated design from architecture to business logic. The ultimate integration must be having an executable BP details design model such that mapping could be avoided. The author is hence working on the idea of integrating the BP. They are attending to formalize the business logistic in BPMN models on the last level of designing (Dumas 2013). Then the BPMN is converted to BPEL and then executed in suitable software. The aim of this methodology is the technique of doing architecture and BP designs. This article explains the general macro-process structure and the use of BPP on projects to guide the architecture and design process. It complements the objective of identifying potential hazards to an organization and explains the crucial limitations to the methodology used (Jeston and Nelis 2014). The value chain macro-process, support resource management macro-process and new capabilities development macro-process has been explained. This article is quiet beneficial for identifying and analyzing the relationships of strategic dependency, strategic rationale and business process reengineering. References Barros, O. and Julio, C., 2011. Enterprise and process architecture patterns. Business Process Management Journal, 17(4), pp.598-618. Dumas, M., La Rosa, M., Mendling, J. and Reijers, H.A., 2013.Fundamentals of business process management(Vol. 1, p. 2). Heidelberg: Springer. Harmon, P. (2014).Business process change. Morgan Kaufmann. Jeston, J. and Nelis, J., 2014.Business process management. Routledge.

The Violence Against Women Act Creates A Right To Be

The Violence Against Women Act creates a right to be "free from crimes of violence" that are gender motivated. It also gives a private civil right of action to the victims of these crimes. The Senate report attached to the act states that "Gender based crimes and fear of gender based crimes...reduces employment opportunities and consumer spending affecting interstate commerce." Sara Benenson has been abused by her husband, Andrew Benenson, since 1978. Because of this abuse, she sued her husband under various tort claims and violations under the Violence Against Women Act. Now Mr. Benenson is protesting the constitutionality of this act claiming that Congress has no right to pass a law that legislates for the common welfare. However, Congress has a clear Constitutional right to regulate interstate commerce. This act is based solely on interstate commerce and is thereforeConstitutional. Because of abuse, Sara Benenson was afraid to get a job because it would anger her husband. She was afraid to go back to school and she was afraid to go shopping or spend any money on her own. All three of these things clearly interfere and affect interstate commerce. Women like Mrs. Benenson are the reason the act was passed. There has been a long history of judgements in favor of Congress's power to legislate using the commerce clause as a justification. For the past fifty years, Congress's right to interpret the commerce clause has been unchallenged by the Court with few exceptions. There is no rational reason for this court to go against the powerful precedents set by the Supreme court to allow Congress to use the Commerce clause. In the case of Katzenbach v. McClung, the Court upheld an act of Congress which was based on the commerce clause, that prohibited segregation. McClung, the owner of a barbeque that would not allow blacks to eat inside the restaurant, claimed that his business was completely intrastate. He stated that his business had little or no out of state business and was therefore not subject to the act passed by Congress because it could not legislate intrastate commerce. The Court however, decided that because the restaurant received some of it's food from out of state that it was involved in interstate commerce. The same logic should be applied in this case. Even though Sara Benenson's inability to work might not seem to affect interstate commerce, it will in some way as with McClung, thus making the act constitutional. The Supreme Court had decided that any connection with interstate commerce,as long as it has a rational basis, makes it possible for Congress to legislate it. In the United States v. Lopez decision, The Supreme Court struck down the Gun Free School Zones Act. It's reasoning was that Congress had overstepped it's power to legislate interstate commerce. The Court decided that this act was not sufficiently grounded in interstate commerce for Congress to be allowed to pass it. The circumstances in this case are entirely different than in the case of Sara Benenson. For one thing, the Gun Free School Zones Act was not nearly as well based in the commerce clause as is our case. The Gun act said that violence in schools kept student from learning and therefore limited their future earning power. It also said that violence affected national insurance companies. These connections are tenuous at best and generally too long term to be considered. However, in the case of Mrs. Benenson, her inability to work and spend directly and immediately affected interstate commerce. Therefore, the Lopez decision should not have any part in the decision of this case. The Supreme Court, in McCulloch v. Maryland, gave Congress the right to make laws that are out of their strict Constitutional powers so as to be able to fulfill one of their Constitutional duties. In this case, the Court allowed the federal government to create a bank. There is no Constitutional right to do this and Maryland challenged the creation of this bank. The high court ruled that in order for Congress to be able to accomplish it's duties. The same logic should be applied here. The Violence Against Women Act is an example of Congress overstepping it's direct Constitutional rights so it can better regulate and facilitate interstate commerce. In order for Congress to legislate interstate commerce fairly, it must allow people to be able to work and spend as they should be able to. If a woman is afraid of being abused if she gets a job or spends money, it affects interstate commerce. Thus The Violence Against Women Act is Constitutionally based and necessary for interstate commerce. Violence against women is

Fraternitys essays

Fraternitys essays Hummer, Robert and Patricia Yancey Martin. Fraternities and Rape on Campus. Gender and Society December 1989: 457-473. The goal of this research was to analyze the group and organization practices that create in fraternities an abusive social context for women (Hummer 1989). Hummer and Martin examined fraternity dynamics associated with a main focus on rape and sexual coercion of women in fraternities. The researchers work centers on a case study of an alleged gang rape at Florida State University. They claim fraternities are not only the physical context, but also the social and cultural context that encourages the sexual coercion of women. The research implicates that fraternities create The gang rape involved four men and one eighteen year old girl. When the victim was discovered her blood alcohol content was .349. She had crude words and symbols on her thighs. The group rape took place on the third floor of a fraternity house. Hummer and Martin collected data by speaking with law enforcement officials. They also analyzed newspaper articles, conducted open-ended interviews with judges, public attorneys and many people regarding the processing of sexual assault cases. The data that was collected showed that fraternity members are mainly concerned with their masculinity. The researchers portray fraternity members as being dominant, competitive, drinking alcohol and treating women as sexual objects. For some reason not all women seem to care, they even help attract new members to these fraternities. When new members see these women they think that if they are part of this fraternity that they will have sex with them. These women, are called the little sisters, they cant be too confident with themselves to get into positions dealing with fraternities. The strategy that researchers have discovered is the individual strategy; that includes ...

The Different Parts of a Stream

The Different Parts of a Stream A stream is any body of running water that occupies a channel. It is normally above ground, eroding the land that it flows over and depositing sediment as it travels. A stream can, however, be located underground or even underneath a glacier.   While most of us speak of rivers, geoscientists tend to call everything a stream. The boundary between the two can get a little blurry, but in general, a  river  is a large surface stream. It is made up of many smaller rivers or streams. Streams smaller than rivers, roughly in order of size, may be called branches or forks, creeks, brooks, runnels, and rivulets. The very smallest kind of stream, just a trickle, is a rill. Characteristics of Streams Streams may be permanent or intermittent- occurring only part of the time. So you could say that the most important part of a stream is its channel or streambed, the natural passage or depression in the ground that holds the water. The channel is always there even if no water is running in it. The deepest part of the channel, the route taken by the last (or first) bit of water, is called the thalweg (TALL-vegg, from the German for valley way). The sides of the channel, along the edges of the stream, are its banks. A stream channel has a right bank and a left bank: you tell which is which by looking downstream. Stream channels have four different channel patterns, the shapes they show when viewed from above or on a map. The curviness of a channel is measured by its sinuosity, which is the ratio between the length of the thalweg and the distance downstream along the stream valley. Straight channels are linear or nearly so, with a sinuosity of nearly 1. Sinuous channels curve back and forth. Meandering channels curve very strongly, with a sinuosity of 1.5 or more (although sources differ on the exact number). Braided channels split and rejoin, like the braids in hair or a rope. The top end of a stream, where its flow begins, is its source. The bottom end is its mouth. In between, the stream flows through its main course or trunk. Streams gain their water through runoff, the combined input of water from the surface and subsurface. Understanding Stream Order Most streams are tributaries, meaning that they drain into other streams. An important concept in hydrology is stream order. A streams order is determined by the number of tributaries that flow into it.  First-order streams have no tributaries. Two first-order streams combine to make a second-order stream; two second-order streams combine to make a third-order stream, and so on.   For context, the Amazon River is a 12th order stream, the Nile an 11th, the Mississippi a tenth and the Ohio an eighth.   Together, the first through third-order tributaries making up the source of a river are known as its headwaters. These make up approximately 80% of all of the streams on Earth. Many large rivers divide as they near their mouths; those streams are distributaries. A river that meets the sea or a large lake may form a delta at its mouth: a triangle-shaped area of sediment with distributaries flowing across it. The area of water around a river mouth where seawater mixes with freshwater is called an estuary. Land Around a Stream The land around a stream is a valley. Valleys come in all sizes and have a variety of names, just like streams. The smallest streams, rills, run in tiny channels also called rills. Rivulets and runnels run in gullies. Brooks and creeks run in washes or ravines or arroyos or gulches as well as small valleys with other names. Rivers (large streams) have proper valleys, which may range from canyons to enormous flat lands like the Mississippi River Valley. The larger, deeper valleys are usually v-shaped. The depth and steepness of a river valley depends on the size, slope, and speed of the river as well as composition of the bedrock.   Edited by Brooks Mitchell

SMART CHOICES by John Hammond Essay Example | Topics and Well Written Essays - 1500 words

SMART CHOICES by John Hammond - Essay Example He lives in Belmont, Massachusetts and is extensively popular as one of the initiators of the decision sciences field. In this book â€Å"smart choices† from the three leading consultants on decision-making, readers get to understand how to approach each and every type of decisions with a set of elementary skills developed by professors from the University of Southern California, MIT and Harvard. In Smart Choices, the authors offer a systematic approach to making the correct choices. They guide people how to be confident and consistent to decisions they make. For example, choosing which job offer to accept, selecting a fantastic book to read to buying the right vehicle. This user-friendly guide demonstrates to readers how to create a complete set of alternatives, assess deep-seated objectives, grapple with uncertainty, determine likely consequences, and make tradeoffs. Not only will the readers understand how to make good decisions, they will understand and learn how to come u p with smartest decisions. For any individual caught at a confusing situation, the Smart Choices program improves abilities of decision-making and makes one’s life more fulfilling and rewarding. The three authors claim that making smart choices is an essential life skill, which can be trained. They provide a realistic model for making decisions, and show that it is applicable in both business and personal situations. They demonstrate that the solution is to break down the decision into its individual essentials, identifying those that are most significant, and analyzing potential outcomes. These authors also argue that decisions should be made before turning into problems. Their so-called PROACT (Problem, Objectives, Alternatives, Consequences and Trade-offs) approach can be broken down precisely. I.e. Identifying the Problem, specifying the Objectives, creating Alternatives, understanding the Consequences, and weighing the Trade-offs. By following these crucial steps, an ind ividual must shed light on uncertainty, evaluate risks, and be sentient of what other alternatives a decision might produce. Smart Choices summarizes eight useful elements in making the correct decision, from identifying what exactly the decision is and identifying the objectives to considering risk, tolerance and also looking at what one decides on today influences what he/she may decide in the days to come. The book is complete with real-life situations that effectively demonstrate each element of an excellent decision. The general idea of Smart Choices is that excellent decision making comes about through scrupulous planning and thoughtfulness. In chapter one of this book from the three leading professors on decision making, some decisions are fairly obvious. For example, will you step in for your employer for two weeks while he/she attends an educational development course? Definitely it is yes, or one’s bank account is running low, but he/she has a three-week break comin g up and wants to get away to somewhere warm to relax with his/her family. Some of the essential decisions one faces in life are complex and tough, with no obvious or easy solutions, which will not probably affect an individual alone, but also affect his/her family, friends, coworkers and several others both known and unknown. Coming up with compelling decisions is therefore, one of the most significant determinants of how smart someone meets his/her responsibilities and achieve professional and

Managing Projects Essay Example | Topics and Well Written Essays - 2250 words

Managing Projects - Essay Example The Ashleigh Music Festival Company has been tasked with the responsibility of managing this project and ensuring that it is successful. This essay will discuss how the Ashleigh Music Festival as a major project can be executed so as to successfully organize and execute it. This essay will also discuss the key issues of the Ashleigh Music Festival project such as the key tasks to be completed so that the festival can be ready for opening, the importance of using project management skills and techniques and the skills and competencies required of the project team among others. Part B: The importance of Project management tools The Ashleigh Music Festival is an important event the needs to be properly managed so as to ensure that it is successful. Effective project management techniques and processes need to be applied to this project for a number of reasons. These project management techniques and processes may include the creation of a business case, defining the scope of the project , being clear about the goals and objectives that need to be achieved by the project, coming up with a viable project plan and selecting the best project team to execute the project (Archibald 1992). The first reason why it would be important to use these project management techniques and processes in the Ashleigh Music Festival is because the project management team will be provided with the opportunity to take charge of the available resources so as to ensure that the team produces the highest quality deliverables that are on time and within the set budget (Bradford, Duncan & Tarcy 2000). This is much easier when project management techniques and processes are used to plan and execute a project (Cleland 1994). The second reason why it would be important to use project management techniques and processes in the Ashleigh Music Festival is to ensure that all set deadlines for the project are met and that all the necessary actions have a timeline at which they should be executed and a chieved (Burt, Dobler & Starling 2003). When project management techniques and processes are applied, deadlines for each action are given. This means that all the actions will have a timeline during which they should be carried out and completed successfully (Cleland & Gareis 2006). This increases the chances of the entire project succeeding as opposed to when there are no set deadlines. Defining the scope of the project is important because it will help the project to focus on what it is set to achieve, and nothing else. It will enable the project team to remain on course and focus their attention on only what the project is set to achieve. Producing a project plan will outline all the processes that need to be conducted and show how they shall be executed. The plan will act as a guide for all the actions that take place during the project’s life cycle. Getting the right team together is also one of the most important factors that will determine whether the project is succes sful or not. The project team is the heart of the project because it is responsible for planning for it and executing it. Creating a business case is necessary because it will provide a solution to the problems likely to be experienced in the project. Essentially, project management entails a number of processes and standard control systems that will ensure the success of projects like the Ashleigh Music

Good V. Evil Essay Example for Free

Good V. Evil Essay The Strange case of Dr. Jekyll and Mr. Hyde represents a conflict between good and evil. One character (Jekyll) is determined to keep his impulses in check and ignore temptations, while the other character, Mr. Hyde, is brazen and submits to any temptation or impulse. The four main characters in the story are all men of similar social class who are capable of keeping their impulses in check and denying the temptations of evil. In the case of Dr. Jekyll however, Dr. Jekyll is not able to say no to the evils and uses an alternate identity to unleash the monster from within. The story of Dr. Jekyll and Mr. Hyde can be easily related to the reader, as everybody knows the temptations of evil and the pleasures that both good and evil can bring somebody. Dr. Jekyll experiences strong tendencies of both good and bad. Unlike most men of Dr. Jekylls age and geography, Jekyll cannot keep himself from indulging in the pleasures that the evil side can provide. Jekylls trip into extreme evil (Mr. Hyde) is partially due to the fact that he has lived such an acceptable and exemplinary life in the past and he holds himself to a higher standard than some of his collegues. Robert Louise Stevenson describes Dr, Jekyll as a man who his friends were those of his own blood or those whom he had known the longest. (Ch1. P2) Dr. Jekyll seems to only trust those whom he was most comfortable with and does not let people that he barely knows too close into his life. It is possible that Dr. Jekyll did not reach out and become friends with too many people because he was aware of the evilness that was lurking inside of him. The attitude of Dr. Jekyll is described in the opening paragraph as at friendly meetings and when the wine was to his taste, something eminently human beaconed from his eyeStevenson. Could it be possible that Dr. Jekyll was aware of the evil secret life that he hides from the real world? It appears that there was something a little strange about Dr. Jeykll that others couldnt exactly figure out yet. Mr. Enfield is asked by Mr. Utterson to describe Dr. Jekyll so Enfield describes Jekyll as somebody who I never saw a man I so disliked. he gives a strong feeling of deformity, although I couldnt specify the pointStevenson,pg. 1680. The bad side of Dr. Jekyll is evident just by his demeanor although it is nothing compared to the evilness of Mr. Hyde. Mr. Hyde represents the dark side of Dr, Jekyll. Hyde only comes to life when Jekyll takes the drug that brings him out. The drug that unleashes Hyde at first makes Jekyll feel terribly sick but shortly after, Jekyll feels incredible and almost as though he is not human. Jekylls evil fantasies and impulses become a reality after he takes the drug. The drug makes Jekyll feel like he is a whole different person and that allows him to do whatever evil things he wants to do. The good in Jekyll is only returned if he takes an antidote. Just like many other people there is a constant struggle between good and evil of our everyday lives. People who struggle with drugs or alcohol or any other worldly temptations live a similar life to the one that Dr. Jekyll lives. Life is not easy for anybody and sometimes people need to escape their reality for a little while by taking a drug just like Jekyll does. Stevenson does well in creating a parallel between good and evil that people can relate to in their everyday lives. Stevensons story is very similar to a modern film called Limitless staring Bradley Cooper. In Limitless, Cooper, a young man struggling to pay his bills, tries a new drug that gives him extreme brain power which he uses to achieve great wealth and success. The success is only attainable with the use of the drug and without the drug, Cooper becomes sick and very weak, similar to what happens with Dr. Jekyll when he is without the drug. Just like Jekyll, Coopers health starts to dwindle as the supply of drugs becomes smaller and smaller. Stevenson is perhaps trying to teach the reader a valuable lesson in saying no to the temptations of evil. These temptations can often be difficult to ignore. Stevnson seems to suggest the Dr. Jekyll is the victim of a split personality disorder which was a new concept during the Victorian age. The only difference between Dr. Jekylls condition and a split personality disorder is that in the case of somebody suffering from split personalities, the person is aware of the other personality and can bring this person out willfully. Mr. Hyde however, cannot control Jekylls personalty and is not even aware of him. Dr. Jekyll is aware of Mr, Hyde though and understands the evilness that Mr. Hyde causes when Jekyll loses control and takes the drug too much. Mr. Hyde begins to take complete control Stvenson might be suggesting that even if a person is good, once they give into their evil tendencies there is no trunigng back. When Dr. Jekyll starts to flirt with hs bad sidem he begins to lose control of his personality and he eventually loses his friends and good nature. Stevnson displays the power of good will and the consewuences of even the first approach at evil. Once somebody is indulged into a bad habit, they can let their abad habit take control of their lives and it becomes extremely difficult to come back from the evilness once it has become a major part of your life. Dr. Jekyll says, with every day and from both sides of my intelligence, the moral and intellectual, I thus drew steadily nearer to the truthby whose partial discovery I have been doomed to such a dreadful shipwreck: that man is not truly one, but truly two Stevenson. Jekyll is describing the affects of his choices and how he is now truning into his bad side for good because that is the person that he has become. Stevensons main goal in writing this story is to create horror and excitement for the reader. He leaves the reader to draw their own conclusions about the message in the story but it is clear to me that this story is about human nature and the batte of good vs. evil. Once a human gives into their temtations they are more likely to indulge in these evil deeds again and again. Dr. Jekyll tried a drug that made him into a different person and he enjoye giving into his evil tendencies. Eventually these evil tendencies took control over Jekyll and he became too evil to return to the good natured Dr. the his colleagues knew.

Hamlet: Nature of Truth Essay -- GCSE Coursework Shakespeare Hamlet

Hamlet:   Nature of Truth Hamlet  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   To some, truth is something that is absolute and unchanging. To others, truth is volatile and inconstant. In the 16th and 17th century, the foundations of civilization itself had been shaken. Many of the ideas which were thought to be absolutely true had been plunged into the depths of uncertainty. The cosmological, geographical, and religious revolutions called into question the nature of truth itself. It is no wonder, then, that some of the great writers at the time included within their works a treatise on the ways in which truth is constructed. Because of the major ideological revolutions that shaped his world Shakespeare used characters and theatrical devices to create their own ideas on the construction of truth. Shakespeare agrees that each individual must search for his or her conception of the truth, based upon our his or her current knowledge, but he uses the limitations of the stage itself to demonstrate this idea. When Ophelia dies at the end of Act IV, Gertrude gives Laertes a vivid description of Ophelia's death, but this death is never acted on stage. We never know for sure whether Gertrude is telling the truth, and if she was a witness to the death, why she didn't try to save Ophelia. The fact that we only hear about the death calls into question the validity of the transmission of knowledge from one person to another, suggesting that truth itself is not something that one will always learn from another, but something that one must find by oneself. Shakespeare further complicates the truth in Hamlet with the many unanswered questions he leaves us with. We don't know for sure if the ghost is truly good or e... ...d by the rest of history. The revolution of thought that occurred in the 16th and 17th centuries forced Shakespeare and other authors to change the foundations of their own thought. They were all willing to present to us their own ideology of truth so that we may benefit from their knowledge. Everyone faces these crises in life, the crisis of one's own opinions being shattered by reality. We may hold on to our opinions, disregarding fact or twisting the facts to fit our theories. But in order for progress to occur, we must at times shed our previous beliefs in favor of ones newly created. We must endeavor to find a version of the truth that is based in knowledge, and one that satisfies our desires. We may never find a version of truth that is satisfactory for everyone. But our search cannot cease. The truth, after all, is in the eye of the beholder.      

Drama: A road to heaven

As I entered the auditorium to join the rest of the audience, I noticed the set stage, afraid that the play has began, I soon realised that it was set up like that for a purpose. This gave a very new impact to me and made you wonder what the production was going to be about. It also thought me that the beginning of the play does not have to begin with closed curtains or a frozen image. It gave it a very good way of introducing the play. Although the nurses sitting on the stage gave me a good perception of where the play was going to take place. The play was a musical, and it was portrayed in different styles of music and introduced in a variety of ways such as costumes, which showed creativeness and imagination for the scenes. The costumes allowed humour to be created and helped the song and the message that they were trying to get across. The music surprisingly were songs that can be recognised by any generation as they used the unforgettable and loved tunes of any age and they were altered to combine with the musical and characters of the play. The lighting helped the atmosphere and surrounding of the scene it helped us to focus on particular characters and the musicians were always seen as they had particular lighting in order for them to see the instructions. Musicians were not hidden and were visual to the audience at all times. This however did not affect the play. It was very helpful for us drama students, as we have never been introduced in a play where they were exposed musicians and it gave me an interesting perception and I was amazingly surprised by the fact that such a small orchestra composed and produced such wonderful and powerful music. I noticed throughout the scene how there was a young male nurse who helped with the characters' costumes and props. I believe that the purpose of him being in the scene dressed up as a nurse is to show us the constant of him helping the cast in the play itself and playing the role of a nurse n the story. The music conductor of the small orchestra spoke to the audience on behalf of the cast, he also helped the cast with their timing of the singing and the time they were going to actually sing this exposed his role with the orchestra and the play. The play was very enjoyable to watch and thought me many techniques and gave me a wide range of ideas. The characters were extremely entertaining to watch and I liked the use of music and ideas used by the company. It did not only teach me about techniques and performances but it also thought me something else about life, â€Å"that however old you are you can be as young as a toddler† and the second lesson and important message of all is that â€Å"You cannot always get what you want†. I hope too, that one day that however old I or anyone else gets we will never lose the young ness within ourselves just like the characters of Road to Heaven.

R.C Air Plane

DESIGN AND FABRICATION OF RADIO CONTROLLED AIRPLANE Group Members: ADEEL AHMAD(080304) BABUR MANSOOR(080316) BILAL IFTIKHAR(080319) HAFIZ FAIZAN SHABBIR USMANI(080332) BE MECHATRONICS (7-A) Project Supervisor Group Captain (R) Muzaffar Ali Assistant Professor DEPARTMENT OF MECHATRONICS ENGINEERING FACULTY OF ENGINEERING AIR UNIVERSITY, ISLAMABAD DESIGN AND FABRICATION OF RADIO CONTROLLED AIRPLANE Final Year Project Report (Fall) DEPARTMENT OF MECHATRONICS ENGINEERING DESIGN AND FABRICATION OF RADIO CONTROLLED AIRPLANE Submitted By: ADEEL AHMAD(080304)BABUR MANSOOR(080316) BILAL IFTIKHAR(080319) HAFIZ FAIZAN SHABBIR USMANI(080332) Project Supervisor ____________________________ Assistant Professor, Group Captain (R) Muzaffar Ali Head of Department ____________________________ Professor/Dean/Chair Department, Engr. Dr. Zafar-ullah-Koreshi Page IAcknowledgement. Page IITable of Contents: Chapter 1: IntroductionPage No. 02 1. 1 Basic IntroductionPage No. 03 1. 2 Transmitter/ReceiverPage No. 04 1. 3 Microcontroller Page No. 05 1. 4 Digital GyroscopePage No. 05 Chapter 2: Literature Review Page No. 06 2. History Page No. 07 Chapter 3: Modeling & DesignPage No. 08 3. 1 Modeling of DC Servo Motors Page No. 09 3. 2 Design of RC PlanePage No. 11 3. 3 Major Parts of RC PlanePage No. 12 3. 4 Mechanical AnalysisPage No. Chapter 4: ReferencesPage No. 14 4. 1 BooksPage No. 15 4. 2 WebsitesPage No. 15 Acknowledgements Apart from the efforts from us, the success of this project depends largely on the encouragement and guidelines of many others. We take this opportunity to express our gratitude to the people who have been instrumental in the successful completion of this project.We would like to show our greatest appreciation to our project Supervisor Assistant Professor, Engr. Muzaffar Ali. We can’t say thank you enough for his tremendous support and help. We feel motivated and encouraged every time we attend his meeting. Without his encouragement and guidance this proje ct would not have materialized. Needless to mention that Sir Raheel Afzal & Sir Moeen Maboob, Lab Engineers, who had been a source of inspiration and for their timely guidance in the conduct of our project work. We would also like to thank all the Faculty Members for all their valuable assistance in the project work.Finally, yet importantly, We would like to express our heartfelt thanks to our beloved parents for their blessings, our friends/classmates for their help and wishes for the successful completion of this project. Chapter # 1 Introduction 1. 1: Basic Introduction Radio Controlled (RC) plane is basically a smaller prototype of an actual aircraft and its dynamics are relatively difficult to understand. For RC Plane there is 3-degree of freedom. Important parameters are: roll, pitch and yaw. To achieve control of these parameters, there are three control surfaces ailerons, elevators and rudder. 1. : Transmitter/Receiver †¢ A Transmitter is an electronic device that gener ates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech or other sources, and radiates the resulting signal from an antenna. The transmitter used for project has 6 channels and is programmable for both airplanes and helicopters. It has a 3-way flap switch, aileron and elevator dual rate switches, rudder mix switch, gear and aux2 switch. A preset memory makes it possible to set up several different models on the same radio. †¢ A  Receiver  converts signals from a radio  antenna  to a usable form.It uses  electronic filters  to separate a wanted  radio frequency  signal from all other signals, the  electronic amplifier  increases the level suitable for further processing, and finally recovers the desired information through  demodulation  and  decoding. Information carried on a radio signal may represent sound, images or data. We are using a 6 channel tiny 4 grams receiver with signal path diversity. 1. 3: Microcontro ller We will be using Arduino AT-Mega 328 Microcontroller and it has a dedicated PWM pin. It has built in ADC therefore no external ADC is required and it is very much faster than Atmel Microcontrollers . 4: Digital Gyroscope How Gyroscopes Work: Gyroscope can balance on almost on any surface with single contact: It can be a finger or even a string. They can resist motion about the spin axis in very odd ways; but the most interesting effect is that gravity-defying part which is called  Precession. We will be using Eclectic Gyroscope in our RC Plane to provide it with stable Flight. We are using Gyro ITG 3200. Chapter # 2 Literature Review 2. 1: History The earliest examples of electronically guided model aircraft were hydrogen-filled model  airships  of the late 19th century.They were flown as a music hall act around theater auditoriums using a basic form of spark-emitted radio signal. In 1920s, the  Royal Aircraft Establishment  of Britain built and tested the Larynx, a  monoplane  with a 100-mile (160  km) range powered by a Lynx engine. It was not until the 1930s that the British came up with the Queen Bee, a modified  de Havilland Tiger Moth, and similar target aircraft. Radio control technology has been in use since 1893, when Nikola Tesla created a boat that was controlled by transmitted radio waves. In 1917, the first radio controlled airplane was successful.During World War II, Germany tried a variety of weapons that were operated by radio control. Radio controlled model airplanes have evolved over the years and seen improvements since that first flight in 1917. Chapter # 3 Modeling & Design 3. 1 Modeling of DC Servo Motrors 3. 2: Design of RC Plane 3. 3: Major Parts Of RC Plane Rudder Flex the rudder back and forth to loosen up the foam hinge. The less force needed to move the rudder the less stress is put on the servo during flight. Alternatively cut them off and use clear packing tape to re-attach them, one slice on each side. [pic ] ElevatorAdjust the travel adjust value to the maximum allowed before the servo begins to bind. [pic] Wings Helps the Plane in gliding and to increase the surface area of the plane. [pic] Aileron For maximum throw, the aileron wing servo has to be swapped around vertically. The servo head should be pointing toward the back instead of the leading wing edge 4. Mechanical Analysis All dimensions of the Plane are From National Advisory Committee for Aeronautics  (NACA) , we selected the NACA series of 0015 as it was cheaper to fabricate. The Analysis of the Aerofoil was performed on Gambit & Fluent as these software are used for fluid analysis.We calculated the Coefficient of Drag & Lift using these software to determine whether the plane will fly or not. The coordinates of the NACA series 0015 was taken from the NACA site. Theoretical Calculations †¢ Length of Aerofoil (chord)= 19 cm †¢ Max Thickness of Aerofoil=2. 85 cm (2. 85/19)*100= 15 We Know that our Aerofoil is Symm etrical, therefore the The NACA Series number of our Foil is 0015 †¢ The NACA 0015 airfoil is symmetrical, the 00 indicating that it has no camber. The 15 indicates that the airfoil has a 15% thickness to chord length ratio: it is 15% as thick as it is long.NACA 0015 1. 000000, 0. 001580 0. 950000, 0. 010080 0. 900000, 0. 018100 0. 800000, 0. 032790 0. 700000, 0. 045800 0. 600000, 0. 057040 0. 500000, 0. 066170 0. 400000, 0. 072540 0. 300000, 0. 075020 0. 250000, 0. 074270 0. 200000, 0. 071720 0. 150000, 0. 066820 0. 100000, 0. 058530 0. 075000, 0. 052500 0. 050000, 0. 044430 0. 025000, 0. 032680 0. 012500, 0. 023670 0. 000000, 0. 000000 0. 012500, -0. 023670 0. 025000, -0. 032680 0. 050000, -0. 044430 0. 075000, -0. 052500 0. 100000, -0. 058530 0. 150000, -0. 066820 0. 200000, -0. 071720 . 250000, -0. 074270 0. 300000, -0. 075020 0. 400000, -0. 072540 0. 500000, -0. 066170 0. 600000, -0. 057040 0. 700000, -0. 045800 0. 800000, -0. 032790 0. 900000, -0. 018100 0. 950000, -0. 01 0080 1. 000000, -0. 001580 Chapter # 4 References 6. 1: Reference Books 6. 2: References Web-Sites file:///G:/GBx%20Brushless%20Motor%20Calculator. htm http://www. futaba-rc. com/ http://www. mathworks. com/products/sl-design-optimization/demos. html? file=/products/demos/shipping/sldo/spe_servomotor. html http://www. futaba-rc. com/servos/brushless. html www. Wikipedia. com

Scarlet Letter Critical Review Paper essays

Scarlet Letter Critical Review Paper essays Scarlet Letter Critical Review Paper The Scarlet letter is a very important and impacting story to the time back then on the East Coast, to now in 2002. It is a love story that is broken up in several different ways. Sometimes you may think its just a story about how leaders in that time handled things. This could be true. You may also think its a story of the Devil and revenge on one another. That could be true. Or, you may think its a story of a woman coping with the trademark of an adulterer. All of these things should be taken into consideration when dealing with the thought of the Scarlet Letter story. It is not only a love story, but also a story of leadership, revenge, and all ends with misfortune. First of all, the Scarlet Letter could be defined as a story of love. This story could truly be a love story. The main plot to the story is love. The reason that Hester wore the scarlet letter is because she was in love with a man. In most old love stories, it usually happens at the end that a big misfortune happens and the two lovers are separated either by death or the worlds rules. In Romeo and Juliet, the two had a big misunderstanding and died right next to each other. So many things can tell us that the Scarlet Letter is a love story. One thinks while going into this story that the main character is in love and is in trouble for it. The lover remains a mystery, but the story goes on as a love story. Second of all, the story could also be portrayed by a story that of leadership. The leadership in the times of these was very harsh. If you stayed on their good side, you will remain unharmed. If you were to get on their bad side, well, you could just forget your dignity because its history. Hester Prynne had to wear a red letter A upon her chest for all of her life to signify that she was an adulterer. She had to stand before the city because she committed a v...

What Is a Crustacean - Information on Crustaceans

What Is a Crustacean - Information on Crustaceans Question: What Is a Crustacean? Crustaceans are animals in the Phylum Arthropoda and Subphylum Crustacea. The word crustacean comes from the Latin word crusta, which means shell. Answer: Crustaceans are a very diverse group of invertebrate animals which includes active animals such as the crabs, lobsters, shrimp, krill, copepods, amphipods and more sessile creatures like barnacles. Characteristics of Crustaceans All crustaceans have: A hard, but flexible exoskeleton or shellTwo pairs of antennaeA pair of mandibles (which are appendages used for eating)Two pairs of maxillae on their heads (additional mouth parts located after the mandibles)Two compound eyes, often on stalksSegmented bodies with appendages on each body segmentGills Crustaceans are animals in the Phylum Arthropoda, and Subphylum Crustacea. Classes, or broad groups of crustaceans, include the Branchiopoda (branchiopods), Cephalocarida (horseshoe shrimp), Malacostraca (the class that is probably most important to humans, and includes crabs, lobsters, and shrimps), Maxillopoda (which includes copepods and barnacles), Ostracoda (seed shrimp), Remipedia (remipedes, and Pentastomida (tongue worms). Crustaceans are diverse in form and live around the world in a variety of habitats - even on land. Marine crustaceans live anywhere from shallow intertidal areas to the deep sea. Crustaceans and Humans Crustaceans are some of the most important marine life to humans - crabs, lobsters and shrimp are widely fished and consumed around the world. They may also be used in other ways - crustaceans like land hermit crabs may also be used as pets, and marine crustaceans may be used in aquariums. In addition, crustaceans are very important to other marine life, with krill, shrimp, crabs and other crustaceans serving as prey for marine animals such as whales, pinnipeds, and fish.

Social issue Essay Example | Topics and Well Written Essays - 500 words

Social issue - Essay Example However, despite these gay movements, gay marriages are still banned in many states, and society still frowns at and hesitates to  accept this ‘deviant’ group. To deny the gay couples the chance to marry and enjoy the full benefits of marriage as accorded to heterosexual couples is unjustified and unjustifiable; in this regard, Gay marriages should be legalized in all the states in the US to allow gay couples to  get married without legal or societal restrictions whatsoever. The US constitution provides for equality and liberty with regards to matters pertaining to marriage and family life- these rights have elaborately been captured and protected in the constitution. To deny gay couples a right to exercise these same rights provided for in their own laws is totally discrimination, and it should not be encouraged. Gay couples deserve to enjoy the rights of freedom of choice with regards to their sexual orientations without discrimination. In addition to this, marriage is also one of the basic human rights, and thus, same sex or heterosexual marriage should be accorded to all, and sundry. Just as the interracial marriages, same sex marriages deserve protection, and should not be discriminated against denying same sex couples a right to marry is denying them their basic human right as provided for in the constitution. Allowing same sex marriages is bound to curb a lot more other social issues such as prostitution, infidelity, divorce and the spread of diseases such as HIV/AIDS studies have shown that such vices have been on the decline in many states that have legalized same sex marriages. For instance, the state of Massachusetts registered a 21% drop in divorce rates after legalizing gay marriages (â€Å"Should gay marriage be legal?†). In this regard, it is clear that instead of hurting heterosexual marriages as it is widely feared, gay marriages will in fact boost the marriage institution

Impenitent Surveillance Solutions Company (ISSC) Essay

Impenitent Surveillance Solutions Company (ISSC) - Essay Example The company is owed by a group of young innovators out to avail innovations that are affordable and offering solutions to problems affecting virtually all individual at the residential and corporate, business world. This business plan has been drafted as a guide and a management tool for the start of this business venture, as well as serves as the basis for a detailed marketing plan. The following highlights the main points of the plan. The objective of ISSC is to generate income to the group, offer jobs to various individuals in the contemporary world rocked with increasing levels of unemployment. The mission of ISSC is to provide a solution to the surveillance process by introducing a gadget that is affordable and efficient. The initial product will be availed at the surrounding areas with respect to the various market segments identified. The local and international market for the product is wide owing to its affordability and means of using mobile telephony for alerts and monitor ing the premises. Finally, the initial financial analysis of the viability of the project clearly shows the outstanding promise and results. With respect to various studies done, closed circuit television has been very critical in crime reduction and investigation. The inclusion of mobile phones to this technology lessens the burden of monitoring gadgets and enhances the critical extension of security measures in the current high technology world. In conclusion, as this plan will outline, this plan projects a rapid growth and eventual high net returns in the coming three years. The effectual implementation of the plan coupled with a detailed marketing strategy will ensure that ISSC eventually and abruptly turns to be a profitable venture to the team of the innovators and satisfying to the customers. 1.2. Objectives The objectives of the business plan are: 1. Introduce a guided format for managing the growth of ISSC: a strategic practice for developing a comprehensive tactical market ing plan. 2. Establish the intended market base capitalisation. 3. Establish the expected proceeds of the venture and its viability. The objectives of ISSC are: 1. Generate sufficient profit to enhance future growth and innovation. 2. Come up with affordable and effective surveillance gadgets. 1.3. Mission The mission of ISSC is very clear and simple: Purpose: ISSC has been introduced to avail effective and affordable, portable CCTV. Vision: in the provision of effective and affordable surveillance gadgets, majority of households and small companies will acquire surveillance gadgets. Marketing slogan: â€Å"ISSC the impertinent solution to your premises protection.â€Å" 1.4. Key to success The set keys to success for ISSC are: Ensuring high product quality. Upholding high marketing and networking strategies Enhancing responsiveness in the surveillance sector. Developing a loyal and cordial relationship with its family of customers. 1.5. Business Concept in Brief Impertinent Surve illance Solutions Company has

Plea Bargaining Essay Example | Topics and Well Written Essays - 500 words - 2

Plea Bargaining - Essay Example According to a task force instituted to address issues in the judicial system, there was major underfunding within the judicial system, unlike other state government elements that fared much better in the recent economic crisis of 2009/2010 (Bibas, n.d.). Considering that most expenses within the judiciary are staff wages, it has been argued in the past that plea bargaining is the best thing that happened to the judicial system. Political analysts and lawmakers have dubbed plea-bargaining as "the new criminal justice system." Because plea-bargaining offers both efficiency and reduced logistical and financial resources, it is overly perceived that without plea-bargaining, an explosion of the court cases would erupt, increasing costs rapidly while at the same time disrupting the present legal system. The primary advantage for the continuance of plea bargaining is that it is vital in ensuring sustained efficiency and function of the criminal justice framework. Many people are of the opinion that if plea bargaining would be discontinued; the judicial legal framework would just cave in from the load of managing ever-increasing criminal cases with limited resources. Individuals supporting plea bargaining argue that while felony caseloads are seen to increase two-fold with every passing decade, the assets set aside to facilitate the activities associated with tackling crime and providing justice only increase by a small margin (Golde & Bonjour, 1975). They contend that plea bargaining is therefore required for the efficient allocation and distribution of judicial resources. Individuals in support additionally argue that extra increases in expenses because of executing trials for each defendant would only be another cost generating gateway, overburdening an already starving economy. Plea bargaining is additionally preferred because it offers extra flexibility in the US judicial framework. Prosecutors are offered the

Study of Hydrodynamic Forces on Multiple Cylinders in Waves

Study of Hydrodynamic Forces on Multiple Cylinders in Waves Introduction In the recent years, there have been increase in demand of production in the offshore industry. The wide market scale of offshore structure business in oil and gas production attracts interest for investors. Offshore structures are stationary structures located in the marine environment for production of natural resources such as wind turbine for generating electricity, FPSO (Floating Production Storage Offload) for crude oil extraction and drilling for drillships. These offshore structures can be either fixed or freely floating. Floating offshore structures/platforms will be using mooring system or dynamic positioning method to float and hold its position in place. Many challenges are faced to withstand the position of the offshore structures due to seakeeping and wave load problems. As technology advance over the years, new implications and investigations are being carried out for offshore structures to to deal with seakeeping and wave load problems. The implication of hydrodynamic force acting on an offshore structure became important due to various wave loads and interactions might affect the results of hydrodynamic forces greatly. The hydrodynamic forces determine how structures float with varying wave frequencies, wave height and etc. Large offshore structures such as semi-submersibles, offshore wind turbines and SPAR are often being investigated to improve their efficiencies by changing their shapes or dimensions. Large offshore cylindrical structures would affect hydrodynamic results due to their wave diffraction and radiation forces. Therefore, in this literature review, investigations of hydrodynamic forces on multiple cylinders are being studied. In order to understand how the hydrodynamic results vary, floating bodies with varying distance are being placed in ideal fluid, where hydrodynamic interactions will cause the influence by the scattered waves and the wave load will differ greatly by the presence of the neighbouring cylinders. Thus, to obtain accurate results, these hydrodynamic interactions are investigated from theoretical predictions, software simulation analysis and model testing. The development of computer with memory capacity and computational speed increases with the advance in technology. The use of these software simulation analysis helps to analyse the wave interactions between multiple floating bodies in an ideal fluid. The software is dependant on the development of hydrodynamic theories. By using linear wave potential theory, the diffraction and radiation forces could be calculated. Hydrodynamic Interaction phenomena Studies of hydrodynamic interactions of multiple bodies have been on going over the past few decades. Hydrodynamic interaction created are due to wave actions the presence of neighbouring structures. A free floating body may experience six DOF (Degree of Freedom) due to surrounding condition, where three are translations (Surge, sway and heave) and three are rotations (Roll, pitch and yaw). Vertical and longitudinal motions are the primary motions which are often experience by offshore structures.[1] The interaction phenomena is due to diffraction and radiation forces acting on the structures and forces created by the structures. The velocity components and the motion of each body can be obtain by the integration of equation of motion. The interaction phenomena between two or more floating structures plays important role on the performance of floating structure systems. It depends on the sepetration distance between the floating bodies and also on the direction of flow with respect to the centerline of two floating bodies.[2] This phenomena can be investigated by using both theoretical and experimentally(Model Test). For experimental, using a full scale model tests are desirable but there are limitations due to controlled conditions and the high cost of production. Therefore, the need of associated computation tools for analysing these hydrodynamic forces to attain fast and accurate results. The complexity of multiple bodies solution increases with the amount of elements.(Research_3) Thus, the use of numerical method is highly recommended in this studies. http://www.ias.ac.in/sadhana/Pdf2004Dec/Pe1236.pdf [1] http://www.dtic.mil/dtic/tr/fulltext/u2/a254627.pdf [2] Potential Theory The knowledge of motion and wave induced forces of offshore mainly involves the structural design and its operation. Offshore structures in sea environment usually encounter environmental loads such as gravity, waves, wind and current. These are the basic information needed to evaluate the interaction of structures through the use of potential theory.(G. Moe, 1996) Potential theory can use to find out the general aspect of fluid flow problems in conjunction with Laplace equation. To satisfy the solution of the Laplace equations, boundary conditions of the fluid are set. Hydrodynamic forces in waves consist of radiation and diffraction forces where velocity potential is the key component to satisfy the Laplace equation. Radiation and Diffraction Problem Hydrodynamic forces is made up of diffraction and radiation forces. These forces includes the 6 degree of freedom that arises from the interaction of linear waves against any floating structure. In addition, these forces will provide information of hydrodynamic properties of floating structures, such as damping coefficient,added mass and wave excitation forces. The fluid must be assumed to be inviscid, incompressible and irrotational. Currently, there have been numerous theoretical and numerical studies on these problems. As the technology advances, researchers have obtained significant results on the phenomena, which made the study for these problems, such as structure and wave interactions, stability of floating structures aon going research. Diffraction Force Diffraction force is the pressure forces acting around the each structure, but due to multiple bodies and interaction of several bodies, the scattering will affect the results of incident wave. For free surface problems with the Laplace equation as the governing equation, a first order or a second-order boundary condition can be obtain using a linearized free surface boundary condition Radiation Force Boundary Conditions Governing Equation The motion response of a structure will cause the fluid to oscillate, hence creating pressure fields in the fluid. In order to capture the motion response and the surrounding pressure fields, velocity potential will be imposed. In addition, there are boundary conditions critition to be met. Drag forces are not being considered in the radiation and diffraction problems as it only occurs in slender body phenomena. With the assumption of having the structure placing in an ideal fluid with zero forward speed. In an ideal fluid condition, the fluid is irrotational and incompressible. The radiation condition should also be satisfied as it is to ensure that the waves propagate away from the structure. From the potential flow theory, it is made known that the velocity potential must satisfy the Laplace equations. Thus, the 3 boundary conditions mention below must be satisfied. Body surface The normal component of the fluid velocity is equal to the normal component of the heave force velocity Seafloor The normal component of the fluid velocity equal to zero Water surface The fluid pressure is equal to the atmospheric pressure and fluid particles will always remain on the free-surface. Pressure will be constant across the free surface. These equations mention below will show the governing equation imposed on radiation and diffraction problems.(Page 44) The velocity potential, along each component(x, y and z) satisfies the Laplace equation in the fluid domain, The free-surface condition, Boundary condition on the sea floor, Boundary condition on body surface, Where k is depends on the motion (six DOF) that the body surface is expose to and nis the unit vector normal to the body surface. Solving Boundary Value Problem The boundary conditions are all set in conjunction with velocity potential. The expression of linear hydrodynamic forces is derived from direct integration of the fluid pressure over the boundary of a body. By using the Green’s theorem, part of the forces can be obtained with the solving the scattering potential. Defining the field point at any point and the source point for circulation, rotation and vorticity, the Green funtion will be presented in the form, Where Equation 7 expresses the source potential as a summation of a source in the finite fluid and an image source above the free surface condition where . This shows that there will at . Equation 8 expresses the source potential is a summation of a source in infinite fluid and an image sink above free surface when . This satisfy the free surface condition where velocity potential equal zero on . Therefore, the solution of the velocity potential for a problem (e.g. force heave) can be written as This source function is given for infinite water depth problem where is called the Green function. By using the Bernoulli’s equation, the total pressure could be fully derived with the use of velocity potential and the body motion amplitudes. Therefore, linear forces and moments are obtain from, We can consider component potentials such that the summation of hydrodynamic forces and moments are Where it is split into two components: the wave excitation force due to diffraction and forces due to radiation force(In terms of added mass and damping coefficients). Given we want to find the force at mode j. The linear forces, also known as the first order wave excitation force, the force for mode j is denote as From Green’s theorem, applying it to and a component of the radiation potential, we have It is show that those integrals on the seabed, over the free surface and at the far field disappeared due to the boundary conditions for and on these surfaces. Therefore, upon substituting the equation of boundary conditions, the Haskind relation follows in the form of By using the equation of motion, the diffraction and radiation problem will be solved. Calculation of Hydrodynamic forces The boundary value problem is solve, therefore the forces and moments can be evaluate. Panel method is use to solve the boundary value problem which is based on potential theory. Assumptions such that the wave amplitudes of the fluid is small as compared to the cross-sectional dimensions of the body are made. The panelling of the structure is done by plane quadrilateral elements in three dimensional problems. http://www.academia.edu/6937922/Computation_of_Ship_Hydrodynamic_Interaction_Forces_in_Restricted_Waters_using_Potential_Theory The solution procedure can be generalized to any modes of motion, where added mass and damping matrix could be found. Solving the diffraction problem can be done by using the boundary condition (equation 5) where is the incident wave potential. From these solutions, we are able to derive the wave excitation loads such as wave excitation forces (surge, sway, heave) and wave excitation moments (roll, pitch, yaw). Therefore, solving the equation of motion and calculating the flow details such as hydrodynamic forces, by using the expression for velocity potential in terms of a three-dimensional source distribution. Past Researches Overview WAMIT Wamit software is a diffraction/radiation panel program developed to analyse the linear interaction of surface waves with several different types of submerged and floating structures. For this analysis of interaction, WAMIT uses a three-dimensional panel method and also following some theoretical method. By using this software, it can help to define the conditions of the interactions such as, finite or infinite water depth, structures location on the free surface, mounted on the seabed or submerged and whether the structures are fixed or freely floating with the motion of six degree of freedom. The fluid flow is assumed to be ideal and time harmonic. WAMIT is able to deal with both first order and linearize analysis which includes second order forces. WAMIT is able to focus on the hydrodynamic interaction of multiple body with any restriction of condition of fluid environment. The use of integral equation obtained by Green’s theorem will help solve the diffraction and radiation velocity potentials on the body wetted surface. WAMIT will be able to evaluate the following quantities: Hydrostatic coefficients Added-mass and damping coefficients for all modes Wave excitation forces and moments using the Haskind relations, or directly by pressure integration from the solutions of diffraction or scattering problems. Motion amplitudes and phases for a freely floating body Forces restraining a body which is freely floating in some but not all modes Hydrodynamic pressure and fluid velocity on the body surface/fluid domain Free-surface elevation All component of the drift force and moment by momentum integration over a control surface Horizontal drift forces and mean yaw moment by momentum integration in the field All components of the drift force and moment by local pressure integration over body surface Drift force and moment in bidirectional waves Theoretical Method The method use by WAMIT will be a panel program designed to solve boundary-value problem for the interaction of waves phenomena with the pre-defining the bodies in finite or infinite water depth. Viscosity will not be considered. The time harmonic solutions are being solved for a given steady state incident wave field which is assumed to be represented by a superposition of a particular frequency components in the absence of the body. The boundary value problem will be used in conjunction with the integral equation using Green’s theorem. These integral equation will be solved by panel method for the unknown velocity potential or strength source of the body surface. These integral equations of theoretical method could be found in .

daddy :: essays research papers

Personal Essay It was a Sunday evening around 6 o'clock or so, one of the many Sunday evenings where I would cruise around with my father in the car. Though this wasn't just any ordinary Sunday sightseeing excursion with dad. We stopped at a red light, and without much enthusiasm observed the pedestrians. A woman, as she walked, fixed the white lacey gossamer slip of her dress. It dragged out of her skirt, obviously making her feel self-conscious. A short, stubby man with an overbearing gut was nonchalantly picking his nose as he ogle the lady adjusting her slip. He stared at her, as though undressing her with his eyes. I looked at my father, who was looking right back at me. We both laughed. Being only 8 years old, I was at an age where I found everything hilarious. The very fact that my father and I were looking at the same scene and probably both thinking how perverted the man seemed made me laugh hysterically. My dad continued to drive. I kept gazing at the scenery of the city, as the sun started to set and the darkness took over. Our little sightseeing trip was over, or so I thought. I was so used to the same path we went through, that when my father made an unaccustomed turn, it made me suspicious. I refrained myself from asking him where we were going because his usual reply would be, "Don't worry about it, don't ask where you're going, its where I take you okay". I had to admit it was an unfamiliar, but enchanting view. I had my window all the way down, with the reflection of the side mirror in my face. The wind blew, as the luminous setting sun mirrored back rays of light. With each reflection, I narrowly squinted my eyes and continued to marvel at this picturesque interaction of color and beauty. Being in the month of October, one can imagine the colorful setting that was before me. Beautiful, vibrantly colored decayed autumn leaves sprang from the limbs of the trees. The aroma of crispy, dried up leaves embraced my nose. These exuberant, withered leaves captivated my vision and olfactory senses, as though I had nothing else to admire. Beauties of nature that so often people, including myself, tend to ignore. Suddenly, my father stopped the car. In front of a deteriorated, run-down house, indicating abandonment. daddy :: essays research papers Personal Essay It was a Sunday evening around 6 o'clock or so, one of the many Sunday evenings where I would cruise around with my father in the car. Though this wasn't just any ordinary Sunday sightseeing excursion with dad. We stopped at a red light, and without much enthusiasm observed the pedestrians. A woman, as she walked, fixed the white lacey gossamer slip of her dress. It dragged out of her skirt, obviously making her feel self-conscious. A short, stubby man with an overbearing gut was nonchalantly picking his nose as he ogle the lady adjusting her slip. He stared at her, as though undressing her with his eyes. I looked at my father, who was looking right back at me. We both laughed. Being only 8 years old, I was at an age where I found everything hilarious. The very fact that my father and I were looking at the same scene and probably both thinking how perverted the man seemed made me laugh hysterically. My dad continued to drive. I kept gazing at the scenery of the city, as the sun started to set and the darkness took over. Our little sightseeing trip was over, or so I thought. I was so used to the same path we went through, that when my father made an unaccustomed turn, it made me suspicious. I refrained myself from asking him where we were going because his usual reply would be, "Don't worry about it, don't ask where you're going, its where I take you okay". I had to admit it was an unfamiliar, but enchanting view. I had my window all the way down, with the reflection of the side mirror in my face. The wind blew, as the luminous setting sun mirrored back rays of light. With each reflection, I narrowly squinted my eyes and continued to marvel at this picturesque interaction of color and beauty. Being in the month of October, one can imagine the colorful setting that was before me. Beautiful, vibrantly colored decayed autumn leaves sprang from the limbs of the trees. The aroma of crispy, dried up leaves embraced my nose. These exuberant, withered leaves captivated my vision and olfactory senses, as though I had nothing else to admire. Beauties of nature that so often people, including myself, tend to ignore. Suddenly, my father stopped the car. In front of a deteriorated, run-down house, indicating abandonment.

Block Diagram Of A Communication System Computer Science Essay

The room access to the presents wireless communicating systems was opened by Guglielmo Marconi when he transmitted the three-dot Morse codification for alphabet ‘ S ‘ by the usage of electromagnetic moving ridges over a 3-KM nexus in 1895. This laid the foundation of modern communicating systems runing from broadcast medium, satellite transmittal and wireless finally come oning to presents cell phones. It would n't be incorrect to state that wireless communicating has so revolutionized our present society A sudden addition has been observed in the enlargement of wireless systems during the last two decennaries. We have seen great development in Wireless communicating systems from 1G narrowband parallel systems in the 1980s to the 2G narrowband digital systems in the 1990s. Now the bing 3G broadband multimedia systems are being deployed. In the interim, research and advancement in the future-generation wideband multimedia wireless systems is smartly being pursued worldwide. To link nomadic users to the populace switched web the United States introduced foremost radiotelephone service by the terminal of the fortiess. Improved Mobile Telephone Service was launched by Bell Systems in 1960s due to which tonss of betterments like direct dialing and addition in bandwidth took topographic point. IMTS formed the bases of the first parallel cellular systems. The term cellular was used due to the fact that coverage countries were disconnected cells, they had a low power sender and receiving system.BLOCK DIAGRAM OF A COMMUNICATION SYSTEMFigure 1. Block diagram of a general communicating system.ANALOG vs. DIGITAL COMMUNICATION SYSTEMSDefinition of DigitalA method of hive awaying, processing and conveying information through the usage of distinguishable electronic or optical pulsations that represent the binary figures 0 and 1.Advantages of Digitallow-cost dependable Easy to pull strings Flexible Compatible with other digital systems The information in digital signifier can merely be transmitted without any debasement through a noisy channel Incorporated websDisadvantages of DigitalSampling Mistake As compared to analogue, larger bandwidth is required in digital communications for the transmittal of the same information. Synchronism in the communications system is required to acknowledge the digital signals, but this is non the instance with linear systems.Definition of AnalogueAnalogue is a transmittal criterion that uses electrical urges to emulate the audio wave form of sound. When you use a phone, the fluctuations in your voice are transformed by a mike into similar fluctuations in an electrical signal and carried down the line to the exchange.Advantages of Analogueless bandwidth is required More AccurateDisadvantages of AnalogueSignal loss and deformation can be seen due to the effects of random noise which is impossible to retrieveGENERATIONS OF CELLULAR SYSTEMSThe construct of cellular telephone was introduced in AMPS, abruptly for Advanced Mobile Phone Systems. AMPS divided the entire country into little parts called cells and this was from where the construct of cellular telephone started. Cellular Systems had many advantages such as they increased quality, capacity, dependability and handiness of nomadic telephone web. The coevalss of cellular systems are described below.FIRST GENERATION CELLULAR SYSTEMSFirst coevals cellular telephone systems were introduced in 1980 ‘s. They were based on Analog Frequency Modulation technique. Each channel was assigned a exclusive frequence. First coevals cellular systems offered merely wireless voice services based on parallel engineering. Digital signals were merely used for control information such as dialing a figure etc. These systems were no able to get by with the increasing demands of users besides they had really less capacity and provided hapless voice quality. Some first coevalss systems are Advanced Mobile Telephone System, AMPS NAMPS, AMPS Entire Access Cellular System ( TACS ) Nordic Mobile Telephone System ( NMT-900 )Second GENERATION CELLULAR SYSTEMSSecond Generation Cellular Systems provided larger capacity and provided much better services to users compared to first coevals systems. They were based upon Digital Modulation technique which led to great sweetening in web ‘s capacity. Second Generation Systems used multiple entree techniques such as TDMA and FDMA. The biggest draw back of Second Generation Systems was that its different systems were non compatible with each other. Therefore rolling between different systems was non possible. Some of Second Generation Systems are North American Digital Cellular, NADC Global System for Mobile Communication, GSM Pacific Digital Cellular, PDC CDMAONE, IS-95 CDMA In order to get the better of Second Generation compatibility job with increased information rates of modern cyberspace applications, 2.5 Coevals criterions were developed. The best thing about them was that they allowed already bing Second Generation systems to be upgraded so that they can be used for higher information rate transmittal. 2.5 Generation brought a new revolution in cellular telephone by back uping services like high velocity cyberspace and location based nomadic services. Some of 2.5 Generation Mobile Systems are General Packet Radio Service, GPRS Enhanced Data Rate for GSM Evolution, EDGEThird GENERTAION CELLULAR SYSTEMSDesigned to supply high quality and high capacity in informations communicating, Third Generation Systems require sophisticated spreading and transition techniques. Third Generation Systems are aimed to supply voice quality comparable to set down line telephone and besides to back up high informations rate. These systems are compatible with circuit switched every bit good as package switched informations services. They are besides compatible with the bing webs and usage wireless spectrum much more expeditiously than earlier. Some Third Generation Systems are Wideband CDMA, WCDMA Universal Mobile Telephone System, UMTS CDMA 2000BEYOND 3GThe extremely developed version of the 3G nomadic communicating are the 4G nomadic communicating services. It is estimated that 4G nomadic communicating services will give addition in capacity, informations transmittal with high velocity, broadband, HQ colour picture images for users, in writing life games in 3D, sound services in 5.1 channels. For the system and architecture of 4G nomadic communicating many researches are done. Developments are made in the terminal protocol engineering for high velocity package services, larger capacity, enabling downloading application plans by public package platform engineering, multimode wireless entree platform engineering, and high quality media coding engineering over nomadic webs.Why 4G?Servicess like wireless cyberspace and teleconference can be carried by 4G. Global mobility and service portability. Wider bandwidths. Increased spot rates. Less expensive. Mobile webs can easy be scaled. Chapter # 02 Multiplexing is a procedure in which a individual bearer is used to convey several different signals. These several signals are transmitted all together by uniting them and organizing one signal that will efficaciously travel through the bearer bandwidth. When one transmittal is done and the signal reaches the finish point, the incorporate signal re-assembles into its existent signifier and is so received. Multiplexing is one of the most used techniques today in about every communicating system. Because of the technological progress multiplexing, we have seen major addition in efficiency of a broad scope of telephone services and on-line applications. Multiplexing has become an effectual technique that assists in everything from video conferences and web conferences up to bulk informations transmittals and even doing a simple Point-to-Point phone call.FDMA:FDMA is the most usual technique used for multiple accessing. FDMA stands for frequence division multiple entree. It is clear from its name that in this technique the frequence is divided among the users as the available spectrum is shared among them in the frequence sphere. The message signals are transmitted onto bearers for different users utilizing peculiar RF frequences. Within FDMA structural design the Single Channel Per Carrier ( SPSC ) is the simplest method where each channel is provided with a separate bearer. This scheme finds its kernel in the fact that the channels are assigned on the footing of demand. Within a cell all the channels are available to all users all the clip, and the channels are assigned as soons as a message signal is received or a petition is made . Guard sets are used to cut down the opportunities of intervention from next channels. These guard sets are present between the sets allocated for assorted channels. In the execution of the first parallel cellular systems, FDMA is the multiplexing technique that was used.TDMA:Time division multiple entree techniques allots different clip intervals to different users for the transmittal of signals and storage of the information is carried out in one frequence channel non like FDMA which uses one frequence per channel. Users are allowed to utilize the same frequence but the clip slots are divided. In TDMA techniques the available spectrum is divided into little frequence sets as in FDMA, which are farther sub-divided into assorted clip slots. The user can entree the frequence channel merely for clip slot allotted to him. User can utilize sporadically the peculiar continuance of clip. In TDMA systems, guard sets are required between both frequence channels and clip slots.SDMA:SDMA stands for Space-Division Multiple Access. It is a MIMO ( Multiple-Input, Multiple-Output, a multiple aerial conventional architecture ) based radio communicating web architecture. It enables entree to a communicating channel by the procedure of placing the user location and set uping a one-on-one function between the web bandwidth allocation and the acknowledged spacial location that is why it ‘s largely suited for nomadic ad-hoc webs. For bulk of the well known nomadic communicating architectures such as CDMA, TDMA and FDMA, SDMA architecture can be configured and implementedCDMA:CDMA stands for Code division multiple entree. CDMA systems are based on the spread spectrum technique. In which transmittals by all the users are carried out at the same time while operating at the same frequence and utilizing the full spectrum bandwidth. For the designation and extraction of needed transmittal, each user is allotted with a alone codification which can non fit with any other user. This issue of designation is due to the fact that all the users transmit at the same time. To guarantee this privateness, pseudo-random noise codifications or PN codifications are used. These codifications are really the extraneous codifications and its advantage is that it reduces the opportunities of transverse correlativity among themselves. By utilizing this PN codification assigned to the specific user, transition of the message signal from an single user is done. Then we have the CDMA frequence channel through which all the modulated signals from different users are transmitted. At the receiving system ‘s terminal, the coveted signal is so recovered by de-spreading the signal with a reproduction of the PN codification for the specific user. The signals whose PN codifications are non matched with the coveted signal and are assigned to different users are non de-spread and as a consequence are regarded as noise by the receiving system. CDMA differs from both TDMA and FDMA in a manner that it allows users to convey the signal at the same clip and operate at the same nominal frequence so it requires less synchronization whereas in TDMA and FDMA frequence and clip direction is really critical so more dynamic synchronism is required. One more advantage of CDMA is that complete system ‘s spectrum is used by signals and hence no guard sets are required to protect against next channel intervention.Intro to Spread Spectrum CommunicationsFollowing are the major elements that can clearly depict the Spread Spectrum communications: By spread spectrum, bandwidth far in surplus is available than that is necessary to direct the information. Due to this characteristic the transmittal can be protected against intervention and jamming at the same clip supplying multiple entree capableness. An independent codification known as the Pseudo random codification is used for signal spreading across the bandwidth. The distinguishable nature of this codification separates dispersed spectrum communications from typical transition techniques in which transition ever spread ‘s the spectrum slightly. For the recovery of the original signal the receiving system is synchronized to the deterministic imposter random codification. Users can convey the signal at the same clip and operate at the same nominal frequence by utilizing independent codification and synchronal response. In order to protect the signal from intervention a pseudo-random codification is used. It appears to be random to anyone who does non hold its pre-defined cognition but in world is deterministic, it is because of this fact that receiving system is able to retrace the codification needed for the recovery of the needed informations signal. This codification used for synchronal sensing is besides called Pseudo noise sequence.Types of Spread Spectrum CommunicationsSpreading of bandwidth of the signal can be achieved by three ways:Frequency skipingThe signal is shuffled between different Centre frequences within the full bandwidth available to the hopper pseudo-randomly, and the receiving system used already knows where to look for the signal at a given clip.Time skipingThe signal is transmitted in short explosions pseudo-randomly, and the receiving system knows when a explosion is expected.Direct sequenceVery high frequence is used to code the digital information. The codification is pse udo-randomly generated. The same codification is generated at the receiver terminal, and in order to pull out the original information this codification is multiplied to the received information watercourse.Beginning Cryptography AND DIGITAL MODULATION3.0 IntroductionDigital Modulation is performed in order to stand for digital informations in a format that is compatible with our communicating channel. Why Digital Modulation? Digital transition strategies have greater capacity to convey big sums of information than parallel transition strategies.3.1 DIGITAL DATA, DIGIITAL SIGNALDigital signal is binary informations encoded into signal elements. Different encoding strategies for encoding digital informations into digital signal are:3.1.1 Non Return to Zero ( NRZ )In NRZ there are two different electromotive force degrees for 0 and 1. There is no passage in the center of the spot. The absence of signal denotes 0 and a positive electromotive force degree denotes 1. The major drawback of NRZ strategy is that it adds a dc constituent to the signal.3.1.2 Multilevel Binary ( AMI )In this encoding strategy there are more than two degrees. No signal represents 0 and 1 is represented by some positive and negative There is no dc constituent in this strategy and besides there is no loss of synchronism for back-to-back 1 ‘s.3.1.3 Manchester CodingThere is passage in center of each spot, which acts as a clock every bit good as informations. The low to high passage represents 1 and high to low represents 0.3.1.4 Differential ManchesterIn this scheme passage at the center of the spot represents merely timing while passage at start represents 0 and no passage at start represents 1.3.2 ANALOG DATA, DIGITAL SIGNALAnalog informations is foremost converted into digital informations by utilizing parallel to digital convertors. These convertors use different techniques to finish their undertaking, some of them are:3.2.1 Pulse Code ModulationIf a signal is sampled at regular intervals at a rate higher than twice the highest signal frequence, the samples contain all the information of the original signal. Each sample is assigned a digital value. Although its quality is comparable to that of parallel t ransmittal but still in this procedure some information is lost and the original signal can ne'er be recovered.Delta ModulationAnalog input is approximated by a stairway map. Function moves up or down at each sample interval by one degree ( vitamin D ) . Delta transition is easier than PCM in execution, but it exhibits worse signal to resound ratio for the same information rate. But it is good for informations compaction.DIGITAL DATA, ANALOG SIGNALDifferent digital transition techniques are:Amplitude Shift Keying ( ASK )A transition technique in which digital information is represented as fluctuations in the amplitude of a bearer moving ridge is called Amplitude-shift keying ( ASK ) . One binary figure is represented by presence of bearer, at changeless amplitude and the other binary figure represented by absence of bearer.3.3.2 Frequency Shift Keying ( FSK )In frequence displacement identifying different frequences are used to stand for incoming digital information. Say in instance of Binary Frequency Shift Keying f1 is used to stand for 0 while f2 is used to stand for 1. In MFSK more than two frequences are used and therefore bandwidth is more expeditiously utilised.3.3.3 Phase Shift Keying ( PSK )A digital transition technique in which information is transmitted by modulating and altering the stage of the mention signal is called Phase-shift keying ( PSK ) . In instance of PSK, a finite figure of stages are used. A alone form of binary spots is assigned to each of these stages. By and large, each stage encodes an equal figure of spots. The symbol is formed by each form of spots that is represented by the peculiar stage. The bandwidth of ASK and PSK are specified as: Whereas the bandwidth of FSK is given as: Where, Roentgen is the spot rate DF = f2 – fc = fc – f1Chapter # 04CHANNEL Cryptography4.0 IntroductionWhy Channel Cryptography? In modern digital communicating systems information is represented in spot watercourses, which are so modulated to analog wave forms before being transmitted onto a channel. At receiving system this parallel information is demodulated into spot streams, but because of the presence of intervention and noise in the communicating channel this spot watercourse may be corrupted. So to minimise happening of spots in mistake and protect digital information from channel noise and intervention channel cryptography is used. How Channel Coding is performed? Additional redundant spots are added to the message informations watercourse to execute channel cryptography, these excess spots assist in mistake sensing and rectification at the receiving system ‘s terminal. Channel Coding at the cost of? Channel Coding is performed at the cost of bandwidth enlargement and information rate decrease.4.1 TYPES OF CHANNEL CODING TECHNIQUESThere are two chief types of channel coding techniques, Block Codes Convolutional Codes. Block Codes accepts thousand figure of information spots and bring forth a block of n figure of encoded spots, and therefore are normally known as ( n.k ) block codifications. Some common illustrations of block codifications are Overacting Codes and Reed Solomon Codes. Convolutional Coding is frontward error rectification technique that is presently most widely used in modern communicating systems, this peculiar technique is used for real-time mistake rectification. Unlike block codifications which append excess spots at the terminal of original message signal, Convolutional coding organize a new codeword utilizing original informations watercourse. The encoded spots are non entirely dependent on K current input spots but at the same clip on case in point input spots.4.2 CONVOLUTIONAL CODESIn this undertaking Convolutional Coding is implemented. Convolutional Codes are farther classified as 1. Trellis Coded Modulation ( TCM ) 2.Turbo Codes. Trellis Coded Modulation ( TCM ) is non recursive, non systematic and does non necessitate an interleaver. Turbo Codes on the other manus are recursive, systematic, parallel structured and they besides require interleaver. In Wideband CDMA systems TCM is used for all channels while Turbo Codes may be used for DCH and FACH channels. Turbo Codes are sometimes classified as separate subdivision of Channel Codes so from here onwards word Convolutional Code will merely be used for TCM.Types of Transmission ChannelsConvolutional Cryptography 1/2 BCH PCH DCH, FACH 1/2, 1/3 Turbo Coding 1/34.3 CONVOLUTIONAL CODE REPRESENTATIONS4.3.1 Polynomial RepresentationNo. of input information spots = K No. of encoded spots = Ns No. of phases ( Constraint Length ) = K Code Rate = k/n Encoded CodeWord = U The undermentioned illustration shows how Convolutional Codes are represented. Let g1 ( x ) and g2 ( ten ) be encoder multinomials, where g1 ( x ) = 1 + x + x2 g2 ( x ) = 1 + x2 Let input message spot stream be 101, hence input message spot stream multinomial will be, m ( x ) = 1 + x2 The encoded codeword ‘U ‘ will be combination of merchandise of g1 ( x ) with m ( x ) and g2 ( x ) with m ( x ) , m ( x ) x g1 ( x ) = 1 + 1.x + 0.x2 + 1.x3 + 1.x4 m ( x ) x g2 ( x ) = 1 + 0.x + 0.x2 + 0.x3 + 1.x4 Therefore the codeword ‘U ‘ , becomes U = ( 1,1 ) + ( 1,0 ) .x + ( 0,0 ) .x2 + ( 1,0 ) .x3 + ( 1,1 ) .x4 U = 1 1 1 0 0 0 1 0 1 14.3.2 State Transition DiagramConvolutional Coding can be represented utilizing State Transition Diagram. Following are State Transition Diagram and State Transition Again for the same input spot stream 10100, the codeword U = 11 10 00 10 11. In the input message last two '00 ‘ spots are tail spots.4.3.2 Block Diagram RepresentationThe undermentioned diagram shows block diagram representation of Convolutional Coding with Code Rate = 1/2 Constraint Length ( No. of Stages ) = 3 The undermentioned illustration illustrates the procedure of Convolutional Coding utilizing block diagram representation for input spot stream 101. So the concluding codeword becomes, U = 11 10 00 10 114.3.2 Trellis Diagram RepresentationFor input spot stream 101, the following diagram shows how Convolutional Coding is performed utilizing Trellis DiagramChapter # 05PULSE SHAPING TECHNIQUES3.0 IntroductionWhy Pulse Determining? It is done in order to cut down Inter Symbol Interference normally known as ISI. How Pulse Shaping is performed? In order to accomplish zero-ISI the overall system response must be equal to Nyquist frequence response.5.1 RAISED COSINE FILTERInter Symbol Interference significantly degrades the informations sensor ability to distinguish between a current symbol from diffused energy of next symbol. This leads to the sensing of mistake and increases BER. So in order to provide ISI, a real-time realisation of Nyquist filter is applied in modern communicating systems. Raised cosine filter is one of the realisation of Nyquist filter. where R = ‘roll-off factor ‘ = 1 ? R ? 0 and T = ‘symbol period ‘ = 1/R Roll-off factor determines the filter bandwidth and represents a tradeoff between the acuteness of the passage set of the filter and impulse response pealing magnitude of the filter. A Nyquist filter has following belongingss: Time response finally goes to zero in a clip period precisely equal to the symbol spacing. By trying the symbol sequence at a given symbol clip point, present symbol is non affected by the energy distributing from the next symbols. The impulse response and the frequence response of the RC filter is Time response of the RC filter goes to zero with a period that precisely equal to the symbol spacing. As the response equals zero at all symbol times except for the coveted one none of the next symbols interfere with each other.5.2 ROOT RAISED COSINE FILTERRC filter is divided into a root raised cosine ( RRC ) filter brace, with one at the transmitter terminal, which performs the pulsation defining in order to restrain the modulated signal bandwidth, and the other at the receiver terminal, that performs matched sensing for optimising the SNR of a known signal in AWGN presence. The Root Raised Cosine filter is so named because its transportation map precisely is the square root of the transportation map of the Raised Cosine filter. Where R = roll off factor and T is symbol period. The RRC filter bandwidth is equal to the root mean square ( RMS ) amplitude 2R. The impulse response and the frequence response of the RRC filter is Both RC and RRC have similar pulsation forms, but the RRC pulsation makes somewhat faster passages, therefore the spectrum of RRC pulsation decays more quickly every bit compared to the RC pulsation. Another of import difference between both pulsations is that the RRC pulsation does non hold zero Inter Symbol Interference. Because of the fact that RRC filter is used at sender and receiver both, the merchandise of these transportation maps is a raised cosine, which will ensue in zero ISI end product.5.3 ROLL OFF FACTORThe roll-off factor, R, is a step of the extra bandwidth of the filter, i.e. the bandwidth occupied beyond the Nyquist bandwidth of 1/2T. Where a?† f is extra bandwidth and Rs is symbol rate.Chapter # 06SPREAD SPECTRUMSpread spectrum is a type of transition where the information is spread across the full frequence spectrum. This procedure of distributing the information across the full spectrum helps signal against noise and intervention. These techniques are largely employed in cell phones and besides with wireless LAN ‘s. To measure up as a spread spectrum signal, two standards must be met The familial signal bandwidth must be in surplus of the information bandwidth. Some map other than the informations being transmitted is used to set up the bandwidth of the attendant transmittal.Why Spread Spectrum?Due to its sole and curious belongingss spread spectrum is preferred over other transition strategies. Some of these belongingss are characterized as advantages and disadvantages of a basic spread spectrum system below.Advantages†¢ It reduces the effects of multipath intervention and at times removes them wholly. †¢ Frequency set is shared at the same time with other users. †¢ Pseudo random codifications guarantee protection of transmittal and privateness. †¢ As the signal is spread over an full spectrum it has a low power spectral denseness.Disadvantages†¢ Due to distributing operation it consumes more bandwidth. †¢ It is at times hard to implement.Types of Spread Spectrum TechniquesMost normally used techniques in a spread spectrum systems are Direct Sequence Spread Spectrum Frequency Hoping Spread SpectrumFrequency Hoping Spread SpectrumA frequence skiping dispersed spectrum hops from one narrow set to another all within a wider set. In general the frequence hopper sender sends informations packages at one bearer frequence and so leaps to another bearer frequence before directing ore packages and continues the same modus operandi throughout the period of transmittal. The form that emerges seems to be random but is in fact periodic and easy traceable by pre configured sender and receiving system. These systems can be vulnerable to resound at a peculiar hop but normally are able to direct packages during the following hop.Direct Sequence Spread SpectrumMost widely used technique of spread spectrum is the Direct Sequence Spread Spectrum. A Direct Sequence Transmitter receives the entrance informations watercourse which is to be transmitted and so change over it into a symbol watercourse where the size of a symbol can be one or more spots. Using any of the transition strategies for digital systems such as Quadrature Amplitude Modulation ( QAM ) or Quadrature Phase Shift Keying ( QPSK ) this symbol watercourse is multiplied to a noise like sequence known as imposter random sequence. It is besides know as a bit sequence. As a consequence of this generation the bandwidth of the transmittal is significantly increased. Figure 3. Direct Sequence Spread Spectrum System Figure 3. shows the working of a basic Direct Sequence Spread Spectrum system. For lucidity intents, one channel is shown working in one way merely.TransmissionFor each channel a distinguishable and different Pseudo random codification is generated. In order to distribute the informations the information watercourse is multiplied with the antecedently generated Pseudo random codification. The signal obtained as a consequence of this generation is so modulated onto a bearer. This modulated bearer wave form is so amplified before broadcast medium.ReceptionThe bearer moving ridge is amplified every bit shortly as it is received by the receiving system. The signal received is so multiplied with a locally generated bearer which gives the spreaded signal. Again a Pseudo random codification is generated on the footing of the signal expected. The procedure of correlativity is carried out on the standard signal and the generated codification which gives the original message signal.Pseudo-Random NoiseThe spread spectrum systems are constructed really similar to other conventional systems. The difference being the add-on of pseudo random generators both at the sender and the receiving system which generate the Pseudo noise sequences required for the functionality of Direct Sequence spread spectrum. These pseudo random noise sequences are used for distributing the signal at the transmitter side and dispreading at the receiver side. A pseudo noise sequence is made up of a figure of symbols which are called french friess. It is imperative that a good codification is selected for its type and length straight affects the system capableness. A alone codification is generated for each channel. All the transmittals for a peculiar user are so added together. At the receiving system each user generates its ain matching codification in order to retrieve the original signals. In order to measure up as a imposter random codification and proper functionality a codification must hold the undermentioned belongingss. The imposter random codification must be deterministic so that the receiving system can bring forth the exact codification as used by the sender It should be random for any hearer who does non hold the cognition of the codification being used so that it appears as noise to any interferer or eavesdropper. Two codifications must be indistinguishable and have no or really little relevancy to each other. The codification should non reiterate shortly there must be a long clip before that happens.Maximal length sequencesMaximal Length sequences can be generated by the aid of displacement registries with feedback applied on them. These sequences meet all the conditions for distributing sequences really purely. The cross correlativity between this sequence and noise is really low, which helps in observing signal out of noise in the receiving system. These sequences are really utile for encoding as they besides have a really low cross correlativity with each other. The entropy belongingss of maximum length sequences can be seen here.Gold SequenceIn order to make two gold sequences, two maximal length sequences are to be combined. They have a really low auto-correlation which enables CDMA systems to convey asynchronously. Gold sequences are constructed by modulo-2 add-on of two maximum length sequences of same length chosen from braces of preferable m-sequences.Walsh CodesWalsh codifications have to be created from hadamard matrices. All generated Walsh codifications would be extraneous to each other. The basic hadamard matrix is shown below. These sequences provide low cross-correlation between each other. Second, the figure of 1 ‘s is same as the figure of 1 ‘s in each codeword. By looking at the matrix above, Walsh codes with different lengths can be generated with the aid of recursion. For a clear apprehension Walsh codes with length equal to 4 are illustrated below.=Spreading the SignalSignal spreading is achieved when the signal is multiplied bitwise with the imposter random sequence. Figure 4. Below gives an penetration into how two spots are multipliied to a pseudo random sequence holding a length of 8 and the its corresponding consequence on the frequence spectrum. Spreading procedure of two spots with the aid of an 8-chip PN sequence is shown on the left side and the consequence of this distributing on the signal ‘s frequence spectrum is shown on the right side of figure. 4 Figure 4. The rule of signal spreadingDe-spreading the SignalDe-spreading of the signal is carried out by multiplying each spot of the signal to its correspond imposter random codification and the consequence is summed bitwise. Figure 5. describes the procedure of de-spreading when a imposter random signal of length 8 is used for transmittal and the de-spreaded signal is equal to the dispersed signal. De-spreading procedure of two spots with a PN sequence of 8-bit is shown on left side and the consequence of the de-spreading on the signal ‘s frequence spectrum is shown on the right. Figure 5. The rule of signal de-spreadingConsequence of Spreading on BandwidthFigure 1. As a consequence of distributing operation the signal ‘s frequence is spread over a wider bandwidth Spread spectrum transition is applied in tandem with some other digitial transition strategies such as QAM or QPSK.Consequence of Despreading on BandwidthFigure 2. The despreading operation recovers the original signal. A spread spectrum transition is applied in coherency with a conventional demodulation process in order to retrieve the original signal.Multiple Access CapabilityThe standard signal s1 is detected by the receiving system summed with the other signal s2. The signal s1 which is for user 1 is merely extracted at the receiving system for user 1 whereas the signal s2 appears to be as noise in comparing to the user 1 signal s1. This is shown in Figure 6. below For efficient recovery of the informations from user 1 it is must that the signal appearance as noise has adequately low energy in the information bandwidth of signal s1. Spreaded informations multi-users De-spreaded informations multi-users Spreaded informations multi-users De-spreaded informations multi-usersFigure 6. Multiple Access Capibility when user 1 recovers signal s1Chapter # 07DESIGN OF A CDMA BASED COMMUNICATION SYSTEM7.1 THE Sender7.1.1 Source EncodingIn order to do incoming message compatible with the communicating system beginning cryptography is used. In this undertaking NRZ encoding strategy is used so that the incoming message signal becomes compatible with the walsh codifications which are besides in NRZ signifier. NRZ encoding provides a better use of the bandwidth, besides if we compare it with AMI strategy it is more efficient because in that receiving system has to separate between three different degrees and it requires more signal power. While the Manchester and differential Manchester strategies have transition rate twice or more than that of NRZ so therefore they require greater bandwidth.7.1.2 Channel EncodingChannel encryption is performed so that spot mistakes can be reduced at the receiving system ; besides it protects the information from channel noise and intervention. In this undertaking we have used Convolutional Encoding technique and so hold tried to upgrade our system utilizing Low Density Parity Check ( LDPC ) . LDPC improves channel capacity as it approaches to Shannon capacity bound. Both Convolutional encoder and LDPC encoder organize a codeword based on the incoming message signal. We have used ? rate encoders that means that we have two input spots and the end product is traveling to be four spots. For Convolutional encoder inbuilt matlab treillage construction along with convenc bid has been used while in instance of LDPC fecldpc.enc bid is used to do LDPC object utilizing thin H matrix and so message is encoded utilizing LDPC object by encode bid.7.1.3 SpreadingThe cardinal standard of spreading is transverse correlativity and car correlativity of message symbols. In instance of a CDMA based communicating system as there are many users that at the same time transmit informations so the system must hold good cross correlativity belongingss. This generates the demand of extraneous codifications so Walsh codifications are used. Walsh codifications have good cross correlativity belongingss. In this undertaking direct sequence spread spectrum ( DSSS ) technique has been employed to distribute the signal across the full bandwidth.7.1.4 Digital TransitionTransition is a technique that facilitates the message signal to be transmitted over the medium. In instance of digital transition, digital signal is modulated utilizing amplitude displacement keying, frequence displacement keying and stage displacement identifying etc. We have implemented Binary PSK, BPSK uses two symbols that have opposite stage to each other to modulate 0 and 1.Sampling frequence of 44 kilohertzs and a information rate of 2 kilohertz has been used in this system. In instance of LDPC modulate bid has been used to modulate the signal.7.1.5 Pulse DeterminingThe consequence of inter symbol intervention ( ISI ) is minimized by the aid of pulse determining procedure. In this undertaking Root Raised Cosine Filter has been used at the transmitter side to determine the pulsation so as to restrict the bandwidth of the modulated signal. By utilizing this technique bandwidth is limited but the signal spreads in so there must be a threshold in order to counter this job, this threshold is known as Nyquist bound. It is fundamentally a low base on balls filter with a axial rotation off factor 0.5 which has been used in this undertaking.7.1.6 Symbol PackingIn symbol wadding, a preparation sequence is appended at the start and terminal of the signal. Besides in add-on to this about 1000 nothings are inserted at the terminal and start of the signal. These are added so that even if the receiving system fails to have initial spots these spots are extra nothings and non the message signal.7.2 THE CHANNELIn a communicating system channel could be wired or wireless. Different channels have different fe atures. When of all time we talk about a channel we talk about noise, it is fundamentally the unwanted electrical signal that confines the receiving system ability to take right determinations. Channel noise degrades the end product really rapidly. Small channel does n't do much difference to the end product signal but big channel noise well degrades the signal. In instance of little channel noise the lone noise that is present in the system is quantization noise. Another of import factor in a communicating system is Inter symbol intervention ( ISI ) . When the channel bandwidth is non much greater than signal bandwidth the spreading of the signal causes ISI. Normally, the radio channel is modeled with AWGN channel. A thermic noise beginning is used to distribute an equal sum of noise power per unit bandwidth over all frequences that is the ground why a simple theoretical account for thermic noise presumes that its power spectral denseness Gn ( degree Fahrenheit ) is level for all frequences, as is denoted as: Gn ( degree Fahrenheit ) = N0/2 watts/hertz7.3 THE Receiver7.3.1 SynchronismIn this system, it is assumed that the receiving system is on all the clip. Therefore whenever the sender will direct the message signal, there should be some manner through which the receiving system can find where its signal of involvement is. This can be done by correlating the preparation sequence with the standard signal. The portion where the maximal correlativity occurs would be the start of the signal and the 2nd upper limit in the correlativity would give the terminal of the message signal.7.3.2 Matched FilteringThe standard signal is passed through root raised cosine filter in order to execute matched filtering and down trying at the receiver terminal. Normally RC filter is divided into a root raised cosine ( RRC ) filter brace, with one at the transmitter terminal, which performs the pulsation defining in order to restrain the modulated signal bandwidth, and the other at the receiver terminal, that performs matched sensing for optimising SNR of a known signal in AWGN presence.7.3.3 DemodulationThe signal is demodulated by multiplying it by the bearer signal. The end product would be demodulated signal, but this demodulated signal would be sum of all the spreaded signals.7.3.4 DespreadingIn order to pull out the single message signal of each user, the spreaded signal is so once more multiplied by the Walsh codification and is so integrated over a symbol clip.7.3.5 Channel DecodingIf the channel cryptography was non employed by the sender, so the despreaded messages would be the standard signals. In the channel coding instance, the signal will hold to be decoded by utilizing the viterbi decrypting map in matlab.7.3.6 Source DecodingWhile executing beginning cryptography we had used NRZ encoding strategy, so now at the receiving system this encoded message is once more decoded back to its original signifier.