IP and OSI Networking Essays

TCP/IP and OSI Networking Essays TCP/IP and OSI Networking Essay TCP/IP and OSI Networking Essay In this essay I intend to analyse why networking software is divided into layers, and to evaluate the advantages and disadvantages of such a division. I will then go on to analyse what the main differences between the networking protocols known as OSI and TCP/IP are. I will also attempt to analyse what factors led to their successes and failures respectively in terms of their diffusion into the technology sector. However, before we can discuss this, we must first be sure that we are aware of the meanings of terms such as networks, network architecture, protocols, and distributed networks/systems so I will begin by defining these phrases. Essentially, a network is the connection of two or more computers for the purpose of data communication and resource sharing. the formal definition of a network could be given as a number of interconnected devices capable of communicating and sharing each others resources (Bandyo-padhyway, 2000:157) As can be seen from the above quote, networking offers organisations a wealth of benefits. A network enables an organization to centralize its computer system and allows users to access the facilities of a large computer system via desktop computers. (Bandyo-padhyway, 2000:157) It could be said that network architecture is, in theory, a model for the set-up of a network. To help deal with this complexity, network designers have developed general blueprints usually called a network architecture that guide the design and implementation of networks. (Peterson Davie, 1996:29) Protocols, in the networking sense, could be considered as sets of rules or procedures that control how a message is sent from sender to receiver and all the factors involved in this process. A protocol is a set of rules or conventions which govern the way a message is transmitted from the sender to the receiver passing through a number of steps and via a number of network elements. (Bandyo-padhyway, 2000:178) Finally, a distributed network/system is where the tasks to be to be performed are distributed among a number of small PCs that are coordinated by a larger central computer. (Bandyo-padhyway, 2000:173) Having defined the aforementioned basic technological terms, I can now go on to my analysis of the reasons why networking software is divided into layers. The primary reason is that having separate distinctive layers reduces design complexity. By this, I mean having different layers means certain operations and tasks that must be carried out, can be carried out in a simple and organised order, rather than all at the same time. First, it decomposes the problem of building a network into more manageable components. (Peterson Davie, 1996:30) Layering allows for changes to be made at a specific layer, as a result of new ideas/innovation, and will not disrupt the software at other levels. Second, it provides a more modular design. If you decide that you want to add some new service, you may only need to modify the functionality at one layer, re-using the functions provided at all the other layers. (Peterson Davie, 1996:30) This means that it accommodates incremental changes more readily. (www. cs. wpi. edu/~rek/Undergrad_Nets/B03/HTTP_DNS. pdf) Another advantage of layering is that details of how the lower level services are implemented are shielded from the higher levels, allowing the higher levels to function more efficiently. This can be seen, from a more technological point of view, in the following quote. Many times there are multiple abstractions provided at any given level of the system, each providing a different service to the higher layers but building on the same low-level abstractions. (Peterson Davie, 1996:30) A final advantage of layering is that as a result of the different types of layers, making it so different types of translations can take place; different types of hardware are enabled to communicate. Having looked at the advantages of layering, I will now spend some time discussing its disadvantages. Some functions (like FDDI station management) really need to access and operate at multiple layers. (courses. cs. vt. edu/~cs5516/spring03/ slides/introduction_6. pdf) As the above quote displays, one disadvantage is since the software is split up into layers, functions will operate at one level at a time, where as some functions have the necessity to operate at several layers. Poorly conceived layers can lead to awkward and complex interfaces. (courses. cs. vt. edu/~cs5516/spring03/ slides/introduction_6. pdf) This quote shows us that unless a large amount of thought and work goes into each individual layer, then a very bad and hard-to-use interface can be the end-result. Another disadvantage is if new design for a layer is done, an old layer may become inappropriate or unsuitable given the properties of the new layer. (courses. cs. vt. edu/~cs5516/spring03/ slides/introduction_6. pdf) A final disadvantage of layering is something known as information hiding, this may take place and this can lead to inefficient implementations. (www-inst. eecs. berkeley. edu/~cs268/ sp03/notes/Lecture2. pdf) I have discussed why networking software is divided into layers as well as evaluating both the advantages and disadvantages of layering. I now intend to introduce the first of the aforementioned protocols Open Systems Interconnection (OSI), before then introducing the second. A number of different types of distributed systems were being developed in the 1970s and as a result, a range of standards had to be introduced. (Halsall, 1996:11) An organisation called the International Standards Organizaton (ISO) created the ISO Reference Model for OSI. The ISO was a body founded in 1945 to coordinate international standards for a wide range of industries. (The Internet in the Arena of International Standards) Below is a diagram of the OSI protocol, taken from Peterson and Davie. As can be seen, the OSI protocol has seven layers. The application layer provides the user interface to a range of networkwide distributed information services. The presentation layer is associated with the representation of data during transfer between two communicating application processes. The session layers job is to set up a communication channel between two communicating application layer protocol entities during a network transaction. The network layer is responsible for establishing a networkwide connection between two transport layer protocol entities. The link layers job is to build on the physical connection provided by the network to provide the network layer with a reliable information transfer facility. Finally, the physical layer is associated with the physical and electrical interfaces between the user equipment and the network terminating equipment. (Halsall, 1996:16, 17, 18) I will now introduce the second networking protocol so that we have a good understanding of them both, before analysing their differences. The second protocol is called Transmission Control Protocol/Internet Protocol (TCP/IP). TCP/IP was developed by the US Department of Defence (DOD) research project to connect a number of different networks designed by different vendors into a network of networks. (www. yale. edu/pclt/COMM/TCPIP. HTM) The idea behind the DODs thinking was that in the Cold War, if the right designated place was bombed successfully, then the whole countries network communication facilities would become inoperable. This was obviously be a bad thing and so the DOD wanted to develop a standard that would connect all the networks together to prevent this from happening. Below is the model of the TCP/IP protocol, taken from (www-staff. t. uts. edu. au/~sean/DSP. dir/dsp00s. dir/lect1. dir/sld014. htm) As can be seen, the TCP/IP protocol has only four layers. The application layer handles high level protocols. The transport layer deals with quality-of-service issues. The internet layer determines the path to forward packets of data. The network layer is concerned with all of the issues that an IP packet requires to make a physical link. (www-staff. it. uts. edu. au/~sean/DSP. dir/dsp00s. dir/lect1. dir/sld014. htm) Now that I have briefly introduced both of the protocols, I will now move on to my analysis of their main differences. A difference between the two protocols in terms of their establishers is that OSI was orally established by Telcos, a telecommunications company and had a large connected emphasis linked to it. TCP/IP came more from a computing background with a large connectionless emphasis associated with it. Another difference that should be noted is that the two models have opposing approaches. The OSI model has a top-down approach meaning the processes that take place within the layers start at the top of the model and work their way down to the bottom. The TCP/IP model has a bottom-up approach meaning the processes taking place within the layers begin at the bottom of the model and move upwards. As can be seen from the models, the visible difference is the number of layers present within each. The OSI protocol has application, presentation, session, transport, network, data link, and physical layers. Where as the TCP/IP protocol has only application, transport, internet and network layers. Even though some of the layers have different names, they essentially do the same thing. However, the presentation and session layers that are in the OSI model are not present in the TCP/IP model. This makes the two protocols technologically different. First there were the technical differences, chief among them that OSI had a more complicated and compartmentalised design. (Lyon Hafner, 2003:246) The above quote points out how the OSI design was considered to be very large and complex where as the TCP/IP design was far more simplistic and smaller. On the OSI side stood an entrenched bureaucracy, with a strong we-know best attitude, patronizing and occasionally contemptuous. There was a certain attitude among certain parts of the OSI community whose message was, Time to toll up your toy academic network,' recalled one ardent TCP/IP devotee (Lyon Hafner, 2003:247) We can see from the above quote that OSI was regarded as a potential official standard with a considerable amount of bureaucratic support, as opposed to TCP/IP, which was seen by some as a toy network for the academic world only, and would never have any real chance of becoming an official standard networking protocol. The reason being was that the OSI was created by the ISO, and the ISO had long been responsible for creating international standards for a variety of industries, as the following quote displays. Since the 1940s, ISO had specified worldwide standards for things ranging from wine-tasting glasses to credit cards to photographic film to computers. (Lyon Hafner, 2003:246) As a result of this official standardization reputation that ISO had created for themselves, OSI was backed by several governments, led by Europe, and was thought to be meeting the needs of the whole world. Another difference between TCP/IP and OSI, was that TCP/IP had actually been implemented where as the only thing OSI had to offer was the design model for the protocol, as the following quote shows. And it was a design, never tried. As far as the Internet crowd was concerned, they had actually implemented TCP/IP several times over, whereas the OSI model had never been put to the test of daily use, and trial and error. (Lyon Hafner, 2003:247) An extremely large difference between the two protocols is in relation to their impacts on the networking world respectively. OSI failed to become to the official international networking standard that it was predicted to be. TCP/IP, contrary to what many had anticipated, was a huge success within the networking protocol world and is used across the world today. However, one must ask, what factors led to this outcome? One factor was that one key TCP/IP developer, Bill Joy, decided that TCP/IP when bought was to come with free networking software, which was based on Unix. As can be imagined, the fact that one received free Unix networking software when buying TCP/IP with no extra charge dramatically helped push TCP/IP further than OSI. The first Sun machines were shipped with the Berkeley version of Unix, complete with TCP/IP. Berkeley Unix with TCP/IP would be crucial to the growth of the Internet. When Sun included network software as part of every machine it sold and didnt charge separately for it, networking exploded. (Lyon Hafner, 2003:250) To clarify, Sun was the name of the computer company that Joy joined as the Unix expert. Another factor that led to TCP/IPs success was the fact that ARPANET decided to switch over to it on January 1, 1983. ARPANET was the resulting internetwork developed when computer networks associated with a large number of universities and other research establishments were linked and it was in large usage. (Halsall, 1996:19) As a result, TCP/IP was pushed even further ahead when ARPANET switched its protocols from Network Control Protocol to TCP/IP as this meant only machines running the new protocols could communicate over the network. Lyon Hafner, 2003:248) Dennis Jennings tells us of a factor that largely contributed to the failure of OSI when it was announced by the manager of a company called ICL at a review meeting that the output of the OSI research would not be in the interests of ICL. The Commission then told ICL that they could do what ever they like. This meant that where would be no available implementation opportunities for OSI once the research had been completed, and Jennings feels that this made it so that OSI had absolutely no chance of success. So what ever the merits of having a set of open OSI protocols, it was a serious attempt to provide an available solution, and the Commission allowed the project to throw it away. OSI died at that meeting. Without available implementations, it had no hope. (Randall, 1997:218) Another thing worth saying is that because the Internet boomed and became increasingly popular, and TCP/IPs design had a layer devoted to the Internet, TCP/IPs popularity was again increased further as a result of the Internets rapid growth. One could argue that OSI, being a protocol that did not include a layer for the Internet in its design, was over-run by the Internets growth. A final factor I would like to mention is the belief that a main reason OSI was not a success was because it got too preoccupied with the standards process and attempting to approve too many that it became caught up with them. It is seen by some that this caused it to fail as it distracted OSI from the one single standard that it was supposed to produce, the following quote shows this. But ISOs plan to make the OSI protocols a single standard for all computer users was defeated by ISOs own practice of approving multiple standards. (International Standards). To conclude, the concept of layering within networking software is in usage as it provides many advantages in terms of the softwares performance itself. Although, it does also pose some disadvantages, I feel they are small in number are not strong enough to outweigh the advantages. My analysis of the two networking protocols, OSI and TCP/IP, shows their main differences in terms of technical as well as social factors. I have also discussed the two differing impacts the protocols had in the world of networking and have attempted to explain why by looking at important factors associated with their diffusions. From my analysis, one can see that OSI was mostly a failure, as opposed to TCP/IP which won the protocols war and is in large international usage today.

Scott Kelly, Astronaut Who Spent a Year in Space

Scott Kelly, Astronaut Who Spent a Year in Space On March 2017, Scott Kelly, astronaut, blasted off to the International Space Station (ISS) on his fourth flight to orbit. He spent a year aboard, racking up a record total of 520 days in space over his career. It was both a scientific and personal achievement, and his time on orbit continues to help scientists understand the effects of microgravity on the human body. Fast Facts: Scott Kelly Born: February 21, 1964 in Orange, New JerseyParents: John and Patricia KellySpouses: Leslie Yandell (m. 1992-2009) and Amiko Kauderer (July 2018-present)Children: Charlotte and Samantha (with Yandell)Education: United States Merchant Marine Academy, University of Tennessee (MS)Published Works: Endurance: A Year in Space, My Journey to the Stars, and Infinite Wonder: An Astronauts Photographs From a Year in SpaceAccomplishments: Spent a year in space as part of the Twins Study of long-term effects of microgravity on humans Early Life Astronaut Scott Joseph Kelly and his identical twin brother Mark (who also served as an astronaut) were born on February 21, 1964, to Patricia and Richard Kelly. Their father was a police officer in Orange, New Jersey. The twins went to school at nearby Mountain High, graduating in 1982. During high school, Scott trained and worked as an emergency medical technician. From there, Scott went to college at the University of Maryland in Baltimore. In his memoir Endurance: My Year in Space, a Lifetime of Discovery, Kelly wrote that his early college years were difficult, and he lacked direction in his studies. By his own admission, his high school grades were bad and his SAT test scores werent impressive. He wasnt sure what to do with himself. Then, he picked up a copy of Tom Wolfes The Right Stuff and the words he read impressed him deeply. I felt like I had found my calling, he wrote about that time in his life. I wanted to be a naval aviator...The Right Stuff had given me the outline of a life plan. To pursue that plan, Scott transferred to the New York Maritime Academy, where his twin brother Mark was already attending college. He graduated in 1987 with a degree in electrical engineering and went on to earn a masters degree in Aviation Systems from the University of Tennessee. As a commissioned officer in the U.S. Navy, Kelly attended flight school in Pensacola, Florida, and later flew jets at various duty stations. In 1993, he attended Naval Test Pilot School at Patuxent in Virginia, and over the course of his career amassed more than 8,000 hours of flying time in dozens of different aircraft in both land and carrier landings. Astronauts Scott Kelly (right) and Mark Kelly (left) in an interview about their work with the Twins Study and as astronauts. NASA   NASA and Dreams of Flight for Astronaut Kelly Scott Kelly and his brother Mark both applied to become astronauts and were accepted in 1996. Scott was trained in caution and warning systems for the ISS. His first flight was aboard space shuttle Discovery on STS 103, a Hubble Space Telescope servicing mission. His next assignment took him to Star City, Russia, where he served as Director of Operations there for joint Russian-American flights. He also served as backup for crew members on several ISS missions. Due to the Columbia accident in 2002 (for which he flew search and recovery operations), flights were postponed until NASA could investigate the causes of the tragedy. Scott next worked as the Astronaut Office Space Station Branch Chief in Houston before doing a stint on the NEEMO 4 mission. That underwater training laboratory in Florida was developed to study the similarities between living in space and underwater for long periods of time in enclosed quarters under simulated space conditions. Kellys next two flights were to the International Space Station for STS-118, and Expeditions 25 and 26, where he worked for several months. He participated in installing instruments for the station, as well as a variety of science experiments. Astronaut Scott Kelly in the cupola section of the international Space Station. NASA Scott Kelly and the Astronaut Twins Experiment The final mission for Scott Kelly was part of the famous Twins Study. For that, he spent nearly a year in microgravity while his brother Mark, who is now a retired astronaut, stayed on Earth. Scientists devised the experiment to study the effects of prolonged microgravity on Scott, and compare changes in the two over the course of the mission and beyond. The study also provided valuable information about how astronauts living and working in space on long-term voyages to the Moon and Mars can be affected. The mission began for him on March 27, 2015, when he blasted off from Earth with Russian cosmonaut Mikhail Korniyenko. Kelly was on for two missions and was commander for the second one. He returned to Earth on March 11, 2016. In addition to the Twins Study, Mark worked with Russian colleagues aboard the station and was commander for the mission during part of his stay. He traveled to and from the station aboard a Russian rocket and capsule. Among other activities, Kelly performed an extravehicular activity with fellow astronaut Timothy Kopra to repair a mobile transporter aboard the station. He also did an EVA with Kjell Lindgren to service several parts of the station, including the Canadarm 2 and installation of docking equipment for future missions by SpaceX and NASA crew vehicles. Scott Kellys personal living quarters aboard the International Space Station were quite small and include a sleeping and personal work area.   NASA The ongoing research into changes in both men has uncovered some significant effects of space flight. During his time in on orbit, Scott grew two inches in height due to weaker gravitational pull on his skeleton. Upon return to Earth, his skeletal structure returned to nearly the same as it was before the mission. Genetically, the men remain the same, but scientists noted some ways that his bodys gene expression had changed. This is not the same as his actual genes changing, but has more to do with how they prepare the body to respond to changes in the environment. In addition, Scott participated in research to help doctors understand why astronaut eyesight can change drastically over time in space. He, like many other astronauts, noted a distinct change in mental viewpoint and also how personal relationships are affected by lengthy stays in space. Kelly noted that one unique aspect of the mission was that time on the station flowed at a slightly different rate than it did for his brother on Earth. It made him slightly younger than Mark and medical scientists are still assessing the effects of his trip on his body. He wrote that his part as a scientific lab rat never ends. I will continue to be a test subject for the rest of my life, he wrote. I will continue to participate in the Twins Study as Mark and I age...for me, its worth it to have contributed to advancing human knowledge, even if its only a step on a much longer journey. Personal Life Scott Kelly married his first wife, Leslie Yandell in 1992 and they had two daughters, Samantha and Charlotte. The couple divorced in 2009. Kelly married his second wife, Amiko Kauderer, in 2018. Scott Kelly retired from NASA in 2016 and has worked with the United Nations Office for Outer Space Affairs since that time. The memoirs of his time in space were published in 2017, and he spends time giving public talks about space and space travel. Ive been traveling the country and the world talking about my experiences in space, he wrote. Its gratifying to see how curious people are about my mission, how much children instinctively feel the excitement and wonder of spaceflight, and how many people think, as I do, that Mars is the next step. Honors and Awards Scott Kelly received many medals and much recognition for his work, among them the Legion of Merit, the Navy and Marine Corps Commendation Medal, the NASA Distinguished Service Medal, and the Medal for Merit in Space Exploration from the Russian Federation. He is a member of the Association of Space Explorers and was one of Time Magazines Influential 100 in 2015. Sources Kelly, Scott, and Margaret Lazarus Dean. Endurance: My Year in Space, a Lifetime of Discovery. Vintage Books, a Division of Penguin Random House, LLC, 2018.Mars, Kelli. â€Å"Twins Study.† NASA, NASA, 14 Apr. 2015, www.nasa.gov/twins-study.Mars, Kelli. â€Å"NASA Twins Study Confirms Changes to Mark Kellys Genes.† NASA, NASA, 31 Jan. 2018, www.nasa.gov/feature/nasa-twins-study-confirms-preliminary-findings.Northon, Karen. â€Å"NASA Astronaut Scott Kelly Safely Back on Earth after One-Year Mission.† NASA, NASA, 2 Mar. 2016, www.nasa.gov/press-release/nasa-astronaut-scott-kelly-returns-safely-to-earth-after-one-year-mission.â€Å"Scott Kelly.† Scott Kelly, www.scottkelly.com/.

Effects of Globalization on Loogistics Essay Example | Topics and Well Written Essays - 1500 words

Effects of Globalization on Loogistics - Essay Example The main setting of this paper is to highlight the impact of globalization on the current economic environment, with specific focus on the logistics and transport sectors. Nonetheless, the paper bases its argument on the fact that the process of globalization is undoubtedly transforming the logistical strategies employed by service and products providers. Globalization combines various actions and trends, which makes the impact of this process not only complex but also revolutionary. According to the discussion findings the subsequent shift to the global business is driven by the desire to access lower labour costs, despite the exposures such as regulatory shifts and high transportation costs subjected to the organizations. With the onset of global business, revolution, many organizations sell to more consumers in wider geographic locations, hence raising the complexity of the processes required to satisfy each market segment. The wider global customer base presents a myriad of challenges for companies that are accustomed to the provision of standard logistic solutions to a smaller regional-based market. In the global field, nonetheless, customers demand not only for the high and perfect reliability of the delivery but also the customization and subsequent solutions to their problems. The above demands explain the complexities that obligate the organizations to adopt diverse and modern logistical solutions that would enable them to retain the customer base.

HU300 unit 8 Journal Research Paper Example | Topics and Well Written Essays - 250 words

HU300 unit 8 Journal - Research Paper Example Let’s take an example of Chinese and Japanese films. These countries portray in their films a lot about their festivals and ceremonies. This tells us how festive these countries are. Chinese films also show the heroic struggle of the Chinese soldiers who reached their destination in the 1930s after the long march. An example of this is the Chinese movie named â€Å"The Long March†. The way Chinese films are made tells us that China has a strong film industry with talented actors. Russian films, like â€Å"Faust† by Alexander Sokurov, talk more about battles and wars, and portray the Russian history. Arabian films have their own special portrayal of beauty and culture. Moreover, if we talk about German films, most of them portray the humorous nature of the Germans which they are famous for. German comedy movies, like â€Å"Miss Congeniality 2 - Armed and Fabulous† and â€Å"The Edukators†, show the sense of humor Germans possess. Hence, keeping in mi nd that films portray cultures, they should not only be a source of entertainment but should also contain moral

My Dream House Essay Example for Free

My Dream House Essay Living life large as people may say it, is my kind of lifestyle, my dream is to make it big and enjoy the finest things in life. Indeed, this can only come with dedication, hard work and a master plan. My dream house can be described in two words, classy and comfortable. The setting should be at the beach where I can view the ocean and enjoy cool breeze; this would also give me the chance to enjoy my hobby, that it swimming. The design should be a mixture of the old and modern architecture and rises above the ground to be held by large beacons. The high rise would ensure that the trees do not block my ocean view. The color would be sky blue that would match and blend with the nearby ocean waters and which also happens to be my favorite color. The roofing should be fitted in that it is able to monitor the beach and ocean activities and acts as a remote weather station. In the inside, the plain white color would brace the walls with paintings from exhibitions. I like paintings from the Africa continent and the ancient Asian art. In addition, sculptures would come in handy in the interior decorations. The black leather couches would have a clear appeal to the house and make it comfortable. Furnishing the house would be very easy as my preference would be artistic furniture. A lazy bag is also a favorite piece, not because am lazy but because it ensures creativity and relaxation; additionally, the Jacuzzi would be a no missing feature. I would not go for the many roomed and large houses since they have a feel of loneliness.  In conclusion, my dream house stands out because of the setting, design and the blend of a modern and ancient structure.

Racism in Heart of Darkness :: essays research papers

What is racism? Racism can be defined as – â€Å"The belief that race accounts for differences in human character or ability and that a particular race is superior to others.† Racism occurs when a racist group finds it necessary to put down other ethnic groups in an attempt to strengthen their own. A very strong racist comment or action might make the other group feel hurtful, degrading, humiliating. The novel, â€Å"Heart of darkness†, written by Joseph Conrad provides such instances which are racist and biased against the people living in Africa. Heart of Darkness is a story in which racism presents itself so deliberately that, for many, the dilemma of race must be tackled before anything else in the book may be dealt with. Conrad used derogatory, outdated and offensive terminology for devaluation of people’s color as savages. This use of language disturbs many readers who read this book. Although Conrad uses racist language in this book, it doesn’t mean that he is really racist. When we look at the language, we are just looking at the very surface of the story. Heart of Darkness is a story full of irony and deception. At one point, Conrad made a very interesting point. He suggested that the light is used to indicate deceit in Heart of Darkness. Conrad uses the character of Marlow to make use of his own thoughts and views about the people in the Congo. He feels pity for them as he sees them falling down carrying heavy packages and Kurtz commanding them like a batallion of troups. This sight angers Marlow and when he gets to Kurtz, it’s too late. Even he has been pulled in by the darkness. Conrad makes an effective distinction between Marlow and Kurtz.

Analysis of “The Doctor in the House” by R.Gordon

The text under analysis is an extract from the book â€Å"Doctor in the house† written by a famous English-speaking writer Richard Gordon by name, who was born in 1921 .Richard Gordon is the pen name used by Gordon Ostlere, an English surgeon and anaesthetist.Richard Gordon has written numerous novels, screenplays for film and television and accounts of popular history, mostly dealing with the practice of medicine. He is most famous for a long series of comic novels on a medical theme starting with Doctor in the House. Gordon worked as anaesthetist at St. Bartholomew's Hospital and later as a ship's surgeon and as assistant editor of the British Medical Journal.In 1952, he left medical practice and took up writing full time. The text is devoted to the final examinations at the medical institutions and tells us about the condition of students before, during and after exams. This extract is constructed around the single theme -the procedure of the exams. Therefore, the theme of the text is examination time.The author uses numerous thematic words, such as: the student, the final examinations, the exams, to prepare, the examiners, cheating, textbooks, to swot up, the written papers, uniformed, examinees, knowledge, tripos, viva, marking, grading, to pass and so on.Besides the basic theme the text touches upon many very important secondary themes: the psychological types of students, cheating at the exams, students’ prejudice, disadvantage of women student at the exams, the psychological pressure of the process of the examination on the students.The main idea conveyed by the author may be expressed as: the examination is like a lottery(much depends upon luck). The plot structure is closed, because it contains all the components. From the exposition we learn general information about students’ attitude to the final examinations and the way of preparation for this important event, the condition of students before, during and after exams.It begins with the comparison the final exams with death; this image presents the students’ attitude to the event. The author  gives the description of preparation for the examinations. â€Å"To a medical student the final examinations are something like death: an unpleasant inevitability to be faced sooner or later†¦Ã¢â‚¬  The exposition ends with  Ã¢â‚¬Å"†¦ and ran a final breathless sprint down the well-trodden paths of medicine.†The main character is medical student R. Gordon.( and the students themselves). Author tells us about him nothing, because he wants to say that Gordon is an ordinary student. Author uses indirect method of characterization, and we can learn something of him only through his feelings. And we see the exams through his own eyes. The story is told from first person narration. The place is a medical universityThe time is the examination timeThe atmosphere is tense and excitingThe story contains 2 logical parts . The narrator depicts the pro cedure of the exams which consists of two parts: written papers, after which one of the students gives a very specific theory of the way the tripos is marking at Cambridge; and the viva – the oral examination, before which he characterizes different types of candidates’ behavior anticipating it. The complication of the narration is showing the process of exam, candidates’ excitement and suspense of the results.This part of the text stretches from â€Å"The examination began with the written papers† to â€Å"†Number three oh six?† the Secretary whispered, without looking up from the book. â€Å"R. Gordon?† â€Å"Yes† I croaked.† The tension reaches its highest degree when poor Gordon almost believe in his fail. And the climax, when the Author describes how the Secretary of the Committee calls out Gordon’s name, because in that moment we become interested in his results, do he pass or fail.â€Å"The world stood still . The traffic stopped, the plants ceased growing, men were paralysed, the clouds hung in the air, the winds dropped, the tides disappeared, the sun halted in the sky. â€Å"Pass,† he muttered.† The author deliberately postpones the denouement keeping the reader in pressing anticipation. It comes in the last paragraph, after the moment when he heard the magic word â€Å"Pass†. It was a kind of liberation and the ending of suffering . â€Å"Blindly, like a man just hit by a blackjack, I stumbled upstairs.†This text is narration with elements of dialogues. The style of written prose is formal. The story deals with describing process of exams, difficulties provided by them and students feelings and thoughts before and after examination. The author tries to convey hard emotional state of the medical students in his novel. He manages to do it with the abundant use of stylistic devices.Similes: â€Å" To a medical student the final examinations are something lik e death† â€Å"I was shown to a tiny waiting-room furnished with hard chairs, a wooden table, and windows that wouldn't open, like the condemned cell.† â€Å"The days after the viva were black ones. It was like having a severe accident.† â€Å"The room had suddenly come to a frightening, unexpected silence and stillness, like an unexploded bomb.†Ã¢â‚¬Å"he goes at them like a prize-fighter†, â€Å"porters like the policemen†, â€Å"the god’s brow threatens like imminent thunderstorm† â€Å"my palms were as wet as sponges†, â€Å"blindly, like a man just hit by a blackjack†.The author brilliantly uses the allusion referring to the Bible’s Judgment day. We discover that final exams are death and the Secretary as an archangel corresponds where they would go to the paradise or to hell. â€Å"The candidate would step up closely to the Secretary, who would say simply â€Å"Pass† or â€Å"Failed†. Succ essful men would go upstairs to receive the congratulations and handshakes of the examiners and failures would slink miserably out of the exit to seek the opiate oblivion.†Metaphor: ‘a straight contest ’ â€Å"an examination is nothing more than an investigation† â€Å"the Old Stager, who treated the whole thing with the familiarity of a photographer at a wedding† â€Å"the well-trodden paths†.Some hyperboles create a great chasm between students and examiners:† But the viva is judgement day. A false answer, and the god's brow threatens like imminent thunderstorm.† The other ones reflect the influence of candidate’s fears on theirs health and perception of the world: â€Å"But the viva is judgement day. A false answer, and the god's brow threatens like imminent thunderstorm.†The following short parallels constructions help to reflect the tense during anticipation of the narrator’s result: â€Å"The world stood still. The traffic stopped, the plants ceased growing, men were paralysed, the clouds hung in the air, the winds dropped, the tides disappeared, thesun halted in the sky.†Ã¢â‚¬Å"Whether these people were so brilliant they were able to complete the examination in an hour and a half or whether this was the time required for them to set down unhurriedly their entire knowledge of medicine was never apparent from the nonchalant air with which they left the room.†Ã¢â‚¬Å"The world stood still. The traffic stopped, the plants ceased growing, men were paralysed, the clouds hung in the air, the winds dropped, the tides disappeared, the sun halted in the sky.†Irony: â€Å"Whether these people were so brilliant they were able to complete the examination in an hour and a half or whether this was the time required for them to set down unhurriedly their entire knowledge of medicine was never apparent from the nonchalant air with which they left the room.†Inversion:â€Å" To a medical student the final examinations are something like death† â€Å"In the square outside the first person I recognized was Grimsdyke.† â€Å"Next to him, a man of the Frankly Worried class sat on the edge of his chair tearing little bits off his invitation card and jumping irritatingly every time the door opened. â€Å" â€Å" Blindly, like a man just hit by a blackjack, I stumbled upstairs.† Epithet:impressionable music despondently ticked flagrant cheating looked dispassionately down anonymous examinees tiny waiting room came solemnly down the stairs restless crowdOxymoron: â€Å"There is rarely any frank cheating in medical examinations† â€Å"to give the examiners the impression of frustrated brilliance.† â€Å"Some of them strode up for an extra answer book, with an awkward expression of self-consciousness and superiority in their faces.† Repetition:â€Å"Number one hundred and sixty-one,† he began. â€Å"Number three hundred and two. Number three hundred and six.† Grimsdyke punched me hard in the ribs, â€Å"Go on,† he hissed. â€Å"It's you!†Idioms: to keep an eye open for terrible displeasureMetonymy: â€Å"The room had suddenly come to a frightening, unexpected silence and stillness, like an unexplodedbomb.†Emotionally coloured verbs: Gaze,hiss,croak,stumbleGradation: â€Å"The world stood still. The traffic stopped, the plants ceased growing, men were paralysed, the clouds hung in the air, the winds dropped, the tides disappeared, the sun halted in the sky.†This story is rather interesting and attracts the reader’s attention. It makes us to experience the psychological state of the students .

Why and How Have Liberals Supported the Fragmentation

Why and how have liberals supported the fragmentation of political power? (15) Why Liberals are concerned about power, most basically, because power constitutes a threat to liberty. Their concern about concentrations of power is rooted in their emphasis upon individualism and its implication that human beings are rationally self- interested creatures. Egoism determines that those who have the ability to influence behaviour of others are inevitably inclined to use that ability for their own benefit and therefore at the expense of others.The greater the concentration of power, the greater will be the scope of rulers to pursue self-interest and, thus, the greater corruption. Lord Acton stated â€Å"Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men. † behind Acton’s famous quote about power and corruption, he points out the liberal belief that, since human beings are individuals and therefore egoistical, they are bound to us e power – the ability to influence the behaviour of others to benefit themselves and they will use, or abuse, others in the furtherance of that goal.In essence, the greater the power the greater the scope for using and abusing others in the pursuit of self-seeking ends. Such thinking has shaped liberalism in a number of ways. In particular it has encouraged them to endorse the principle of limited government brought through constitutionalism and democracy. Liberals thus support, for example, codified constitutions, bills of rights, the separation of powers, federalism or devolution, as well as regular, free and fair elections, party competition and universal suffrage. Constitutionalism delivers limited government either by legally ring-fencing government (e. . , codified constitutions and bills of rights or fragmenting government power so creating a network of checks and balances (e. g. , the separation of powers, bicameralism and federalism). Democracy delivers limited gover nment because it bases government on a system of popular consent and accountably that also enables the public (through competitive elections) to rid themselves of unpopular or corrupt governments. The fragmentation of power brings many significant benefits. It creates a network of checks and a balance, ensuring that power is a check on power.Different bodies and institutions will eventually act as a check on each other. Fragmented government therefore creates internal constraints that prevent government from becoming a tyranny against the individual. Furthermore, it ensures that those who exercise power have only a limited ability to influence other citizens, thus preventing absolute power. How Traditionally, liberals have always supported fragmented government, checks and balances. Power within liberal democracies is separated between the legislature, executive and judiciary which act as both independent and inter-dependent bodies.The separation of powers emphasises it cuts on powe r into smaller pieces – thus preventing concentrations of power from developing – and that it creates internal tensions amongst institutions and power-holders which further diminishes the capacity of each to abuse or tyrannise the general public. Liberals support constitutionalism and consent because they fear that government may become a tyranny against the individual, based on the assumption that power is inherently corrupting and concentrations of power will lead to absolute corruption.This assumption is rooted in the liberal view of human nature: as individualism implies self- interest, those with power over others are apt to abuse it for their benefit and at the expense of others. Constitutionalism is the theory or practice of restricting government power through the establishment of a framework of constitutional regulations, usually involving the fragmentation of power to create a network of checks and balances. Liberal constitutionalism is expressed through supp ort for various external and internal devices, such as codified constitutions, bills of rights, the separation of powers, federalism or devolution, and so on.Liberal support for consent is evident in support for electoral democracy in general and, more specifically, sympathy for referendums and proportional representation. Consent is the principle that the right to govern derives from the willing agreement of the governed, who thus view the actions of government as rightful or legitimate. Consent is often in practice associated with the act of voting and therefore institutionalised through a system of electoral democracy. Liberals emphasise the importance of constitutionalism and onsent because both are mechanisms for protecting or enlarging the sphere of individual liberty by restricting the capacity of government to encroach upon the individual. This commitment to limiting government reflects the underlying liberal fear that power is inherently corrupting, a consequence of egoism, meaning that government is always liable to become a tyranny against the individual. Constitutionalism achieved this aim through formal, institutional and often legal restrictions upon government officials and bodies.Consent achieves it by ensuring that politicians are publicly accountable and, ultimately, removable. ? Federalism, based on the principle of shared sovereignty, devolution, parliamentary government, cabinet government and so on. ? Power is devolved from the centre to regions and at local levels. In the UK: regional assemblies- welsh assembly; Scottish parliament ? Human rights act: giving people rights in law which means that they have a check to defend themselves from being discriminated against by those in authority

How does Shakespeare portray ambiguity in the play Romeo and Juliet Essay Example

How does Shakespeare portray ambiguity in the play Romeo and Juliet Essay Example How does Shakespeare portray ambiguity in the play Romeo and Juliet Paper How does Shakespeare portray ambiguity in the play Romeo and Juliet Paper Essay Topic: Metamorphoses The exploration of ambiguity in the play ‘Romeo and Juliet’ encapsulates Shakespeare’s message of how there is no ‘right’ or ‘wrong,’ ‘good’ or ‘evil’. This theme is sparked from the contextual circumstance of the play, set in Renaissance England, a time of great change and cultural ambiguity, bringing about the protestant reformation and the emergence of ‘the new man’ and new outlooks on love and romance. Shakespeare adopts descriptive techniques and distinctive wordplay, integrating literary devices and imagery to portray ambiguity subliminally throughout the play. The concept of ambiguity is portrayed by his use of oxymoron, for instance â€Å"Oh brawling love, oh loving hate† depicts ambiguity through the binary of love and hate and how elements of both can be found in one another, thus highlighting Shakespeare’s message of how the entire concept of the play is ambiguous. An oxymoron is by definition ambiguous, and is often adopted to conceptualise ambiguous meanings and ideas. Similarly, Shakespeare uses paradox, for instance, when Juliet questions, â€Å"was ever a book containing such vile matter so fairly bound? to depict Juliet’s complexity as a character, and her conflicting emotions when trying to battle with the idea that the love of her life is a murderer. In addition Shakespeare conveys ambiguity by categorising imagery into two extremes, light and dark. This imagery continually recurs throughout the play, and is often adopted by Romeo, for instance when he first sees Juliet he declares, â€Å"O, she doth teach the torches burn bright† and Juliet is continually referred to as a light in the darkness and Juliet concurrently expresses how â€Å"Romeo’s body† be â€Å"cut out in little stars. Shakespeare uses this to accentuate the contrast of love and hate, an ambiguous disparity Shakespeare uses to encapsulate the meaning of the play. Furthermore, Shakespeare’s use of distinctive language and character repartee is used for contrast and to craft oxymoron and paradox to illustrate ambiguity, for instance; â€Å"A damned saint, an honourable villain! The poignant contrast between the words, â€Å"damned† and â€Å"honourable† each adjectives used to inverse the distinct characterisations of â€Å"villain† and â€Å"saint† in the form of an oxymoron. Ambiguity is also explored through the characters themselves. For instance, Friar Lawrence is portrayed to have a vested interest in the happiness of both Romeo and Juliet and appears as an advocate of their forbidden romance and even helps to marry the two in secret, later providing Juliet with a substance that will give her the power to fake her death to avoid her marriage to Paris. However it appears he has an ulterior motive fuelled by his peace loving disposition. This is portrayed when he states that â€Å"this alliance may so happy prove to turn your households’ rancour to pure love,† thus expressing the somewhat ambiguous nature of his character. Furthermore, his unorthodox behaviour may have in fact caused the deaths of the two lovers and thus Shakespeare portrays ambiguity in this instance by portraying the layers of the Friar’s character, how a peace loving man of God, whom Shakespeare initially appears to use as a plot device, gradually metamorphoses to someone who will, by any means necessary, attempt to achieve his goal, no matter how innocent his motives. Similarly, Lord Capulet’s character also appears to acquire a similar ambiguous nature. He initially appears as a loving father with seemingly chivalrous qualities, asking Paris to â€Å"let two more summers wither in their pride, ere we may think her ripe to be a bride,† allowing his daughter time to mature before she weds Paris. Similarly, when Tybalt expresses his anger and concern when Romeo enters Juliet’s party, he responds dismissively and appears to see no point to the feud, portraying a sensible, understanding side to his character. However, Capulet soon loses this title and becomes a more aggressive character, forcing Juliet to marry Paris and when she refuses he exclaims, â€Å"Out you baggage, you tallow face,† expressing a more belligerent side to his character. And thus again, Shakespeare portrays ambiguity through Capulet’s somewhat twofold character, each a polar end of two extremes, aggression and compassion. In addition, Mercutio’s character also resembles a somewhat ambiguous nature. His name itself is derived from the word ‘mercurial’ which means unstable or volatile, which in itself encapsulates his ambiguity. He initially appears very self assured and confident with an aptitude for bawdy humour. He appears to sustain a dismissive, derogatory outlook on love, expressing that â€Å"if love be rough with you, be rough with love. † He also appears as a loyal friend to Romeo, and advocate of the Montagues. However, it appears Mercutio’s alleged confidence is merely a facade fuelled by his insecure, volatile undertones. This is portrayed during his dying moments when he exclaims, â€Å"a curse of both your houses! † portraying his volatility and insecurity as opposed to his initial confident, secure demeanour and thus conveys his character’s ambiguous fibre. Ambiguity is also distinguished through the themes integrated into the play and the plot itself. Shakespeare expresses how the conflicting themes included in the play, for instance ‘Love and Hate’ are merely adopted by Shakespeare to portray how there is no ‘one or the other,’ there is always a mixture of both. He uses the characters’ emotions and actions to portray these themes as inversed extremes battling against one another to realise the ultimate conclusion mentioned previously. Similarly the plot in itself, a fickle feud fuelled by the insecurity of each other’s prevalence that ultimately resulted in the deaths of each of their own.

3 Things to Research Before Any Job Interview

3 Things to Research Before Any Job Interview There are so many job search how-to articles out there telling you to do your homework, but what exactly does that mean? What homework? What research into these companies you’re interviewing with is actually going to help you? What do you actually need to know to prepare for your job interview? What you would be doingThis seems like an obvious place to start, and it is. But the most important research you can do before going in for an interview is to get a really good sense of what your position would entail on a day-to-day basis. What opportunities are there for growth? How long have people typically stayed in that role? What are the primary responsibilities and requisite qualifications? You can contact current employees on LinkedIn or try to chat with friends of friends that work there, if that helps. Or, sign up for the company newsletter. You’ll be much better prepared and your interviewer will be pleased to notice your keen interest.Who the movers and shakers areIt ’s always a shrewd idea to get an idea of the power players at any particular company. Start with the About page and see who the managers and executives are, then commence your Google stalking. You’ll get a great sense of what kind of talent the company values, and how you might fit in.What it’s like to work thereCulture, culture, culture. Everyone is now officially obsessed with this word. But it’s a useful one. After all, you’ll be spending a massive amount of time in this one place. Best to get a good idea of what it’s like. It will save you a lot of adjustment time if you know what to expect going in. You’ll also get a better idea of what unique personality traits and skills or experiences to emphasize during your interview to net the job.

Sustainability of functional foods Dissertation

Sustainability of functional foods - Dissertation Example As livestock industry being the single largest user of land is affecting the eco system directly or indirectly (directly by cultivation of crops for the animals on large areas and indirectly from feedstock productions). Moreover predictions were given earlier by Grigg (1995) regarding increase in environmental impacts because of more agriculture trading and global trends in the market with reference to food. Furthermore environmental impacts with reference to agriculture are analysed, fortified food or functional foods productions, then these are the findings: Almost one third of the world’s cultivated land over the time of forty years has resulted in soil erosions and degradation of land. One way or other almost 80% shedding of forest is because of agriculture (Pimentel, 1994) High consumption of water in the agriculture sector and in livestock production is another main environmental impact. For instance in some cases crops consume 500 to 2000 liters of water and in case of beef almost 150,000 to 200,000 water is consumed to produce it (Macdiarmid, et al., 2011) However in general live stock is mainly responsible for providing proteins to masses of today. According to a report in order to gain one kg of high quality meat 6 kg of high quality plant is required. ... Moreover the consumption of grain in US live stock industry is 7% more than what its population directly eats. This over production has caused lands to erode. So this is another important environmental factor with reference to function food productions (Frey, and Barrett, 2007). Moreover different researches have been carried out with reference to environmental impacts in which different input and output and extended research methods have been used. However meat along with dairy products is considered to be the main contributor in terms of impacting the environment which even includes production change and distributors (Macdiarmid, et al., 2011). According to the Swedish study, food consumption is one of the most important players in creating pollution. Beside pollution, another important concept which by Macdiarmid, et al., 2011 as â€Å"virtual water†. Or in other words it is the amount of water that is used in the production of food is known as virtual water or embedded wat er (Hoekstra, & Chapagain, 2008). Since water is a diminishing source of energy and it has no replacements unlike oil if that runs out then it can be replaced with other sources of energies. However the term virtual water or embedded water means that the water consumed by products during the time of creating product and that water is not present physically but it has consumed water is known as embedded water or virtual water for instance it takes 140 liters of water for making one cup of coffee and 15000 liters for 1kg of beef (Macdiarmid, et al., 2011) Likewise according to the statistic report shows that almost 12,000 billion liters of water is taken out from rivers and other sources in UK which is about 9% of the total actual renewable water available in the UK. Keeping in view