Online Learning VS traditional learning Essay Example | Topics and Well Written Essays - 500 words

Online Learning VS traditional learning - Essay Example The benefits of online learning over traditional learning center on the fact that online learning allows for more learner independence (Peppler and Solomou 14), flexibility, reduced costs and increased convenience. While higher education programmes have traditionally been governed by the conventional components of ‘teaching’, recent decades have brought about a re-evaluation of the fundamental premise and function of education (Garrison and Vaughan 4). This has led to a significant shift in focus towards a learner-centred approach where autonomy and the facilitation of independent and lifelong learning has become a primary goal (Somekh 20). As a result of this and prevailing socio-economic factors, distance and online education has become an increasingly popular, accessible and valid form of education (Stacey 288). Though previously serving as an alternative to conventional education, the past decade has seen increasing levels of convergences in distance and conventional education, and it appears to be a natural evolution of educational approaches (Tait and Mills 10). Traditional education cannot allow for such accessibility and convenience on the part of the learner. The rapid development of Information and Communication Technologies (ICT’s) in the late 20th century created new and exciting conditions for online courses, such as providing almost unlimited resources for research and information, enabling interactive learning and significantly reducing the cost of tutor-student communications (Leach 41). In fact, these technologies have affected education as a whole, irrespective of the descriptor of ‘distance’ or ‘conventional’ (Somekh 37). These technologies offer much more resources and diverse methods compared to traditional learning environments which take place in a classroom and use usually only printed material. The financial benefits of online learning are also significant both for learner and institution. It provides cost savings benefits

Time Travel Essay Example for Free

Time Travel Essay People often wish that they could go back to the past and correct their wrong behaviors or go to the future and see what it turns out to be like. The idea of time travel has been the topic of science fiction movies and novels, and has been studied by great scientists throughout history. â€Å"Ideas of time travel have existed for centuries, but when Albert Einstein released his theory of special relativity, he laid the foundation for the theoretical possibility of time travel. As we all know, no one has successfully demonstrated time travel, but no one has been able to rule it out either. Time has fascinated people throughout the dawn of civilization. People have spent their life thinking about these concepts and the ideas behind them† (Kulkarni,2011). Although the possibility of time travel has been criticized, a lot of modern scientists still argue that time travel is possible. This paper attempts to prove that time travel is possible. To better understand this assertion, we first need to study where this concept started and primarily the theories supporting this claim. Then, how it would be possible to travel to the future and to the past. Also, the philosophical understandings which include paradoxes and other arguments that tend to disprove the possibility of time travel. Ideas about time travel has been passed from generations to generations and it could be traced back to the years before the birth of Jesus Christ. â€Å" Time travel is the concept of traveling forward and backward to different points in time, much as we do 4 through space† ( Crystalinks, 2010). Many of the early works featuring elements of time travel have been claimed to be the earliest so there is no widespread agreement as to which written work should be recognized as the earliest example of a time travel story. Ancient folk tales and myths sometimes involved something the same to traveling to the future in time for example, in Hindu mythology, Mahabharata and Urashima Taro which is a Japanese tale. â€Å"Memoirs of the Twentieth Century† by Samuel Madden was an early story with ideas of time travel backwards. The first time travel was described through the book of Charles Dicken entitled â€Å" A Christmas Carol† , Ebenezer Scrooge, as the main character, is transported to Christmas past, present and yet to come. Two stories entitled â€Å"El Acronopete† and â€Å"The Time Machine† written by Gaspar y Rimbau and H. G. Wells respectively are the first stories to feature time travel with the aid of time machines. Again, a lot of people have been talking about the concept of time travel since years before the birth of our Lord and until now. What are the theories about time travel and what are Einsteins theories supporting it ? The answers are the most notably theories of time travel: forwards and backwards and supported by the theories of relativity: the special and general relativity. According to Brian (2001) â€Å"Einstein’s theories of general and special relativity can be used to actually prove that time travel is possible†. In 2011 Kulkarni claimed that â€Å"the special theory gives a unified account of the laws of mechanics and of electromagnetism. Einstein rejected the concepts of absolute space and time and made two postulates (a) the laws of nature are the same for all observers in uniform relative motion and (b) the speed of light is the same for all such observers†. Therefore, with the knowledge and understanding of the ideas of physics particularly on the theory of special relativity of 5 Einstein, one will be able to believe that time travel is possible. â€Å"In 1915, Einstein developed his ideas to form the General Theory of Relativity, in which he considered objects that were being accelerated with respect to one another. He compared the forces of acceleration and gravity and found them to be indistinguishable. For example, an astronaut standing in a rocket on a launch pad would feel himself pressed against the floor because of gravity. If the same rocket was in outer space and not affected by gravity, but with its engines turned on so that it was accelerating, the astronaut would again be pressed against the floor. If the acceleration due to the engines were the same as the acceleration due to gravity, the astronaut would have no way of telling whether the rocket was at rest on the earth or accelerating in outer space unless the looked out of the window. Einstein stated that the attraction to the Earth of a rocket that is resting on a launch pad is equivalent to the acceleration of the rocket. So although in three-dimensional space, the rocket remains stationary, in four-dimensional space-time the rocket is in motion along its world line. The upshot of this motion in space-time is that gravity also makes time run slower†( Kulkarni, 2011). What are the kinds of time travel and what are the ways that will help scientists prove that time travel is possible? The two kinds of time travel are time travel forwards and time travel backwards, which will be made through time dilation, time perception, the use of wormholes, and special-spacetime geometries. Studies conducted by scientists reveal that there is a possibility to time travel to the future. There are two ways presented by them in which a person can time travel forwards: time dilation and time perception. Hawking (2010) states â€Å"I do believe in time travel. Time travel to the future. Time flows like a river and it seems as if each of us is carried 6 relentlessly along by times current. But time is like a river in another way. It flows at different speeds in different places and that is the key to traveling into the future. This idea was first proposed by Albert Einstein over 100 years ago. The first course is to use the idea of time dilation. It has recently been claimed ( Cutnell and Johnson, 2006, p. 610) that â€Å"An observer who is in motion with respect to the events and who views them as occurring at different places measures a dilated time interval. The dilated time interval is greater than the proper time interval, according to the time dilation equation†. For example, an observer might take a trip away from the Earth and back at relativistic velocities, with the trip only lasting a few years according to the observers own clocks, and return to find that thousands of years had passed on Earth†. Indeed, â€Å" once spaceships are built that could fly faster than the speed of light a day on board would be equivalent to a year on Earth. Thats because -according to Einstein- as objects accelerate through space, time slows down around them† (Hawking,2010). Cutnell and Johnson (2006, p. 60) noted, â€Å"A striking confirmation was achieved in 1971 by an experiment carried out by J. C. Hafele and R. E. Keating†. Consequently, time dilation will genuinely help time travelers to time travel to the future if they are able to travel in space. In addition, time travel to the future would be possible through time perception, where the body temperature and metabolic rate of the creature is decreased. Some scientists research on the possibility of time travel to the past and the results demonstrate that it will become true. Certainly, they displayed two possible methods which will help an individual to be able to travel backwards, these are by using wormholes and through the idea of special space time geometries. One view (Brian, 2001) is that, â€Å"Wormholes appear to be the main way that time travel into the past would be 7 possible. Wormholes are holes in the fabric of four dimensional space-time, that are connected, but which originate at different points in space and at different times†. Crystalinks (2010) asserts that â€Å"A proposed time-travel machine using a wormhole would (hypothetically) work something like this: A wormhole is created somehow. One end of the wormhole is accelerated to nearly the speed of light, perhaps with an advanced spaceship, and then brought back to the point of origin. Due to time dilation, the accelerated end of the wormhole has now experienced less subjective passage of time than the stationary end. An object that goes into the stationary end would come out of the other end in the past relative to the time when it enters†. Although, it is hard to build a time machine like a huge spacecraft, still small time machines are possible to be made enabling human beings to travel backwards. Therefore, the use of wormholes is one of the best course to enable a man to time travel to the past. Likewise, time travel to the past will be possible through the idea of special space time geometries that describes the universe under a system of field equations, and there exists solutions to this equations. What is the paradox that hinder the possibility of time travel and what is its resolution? The answer is the grandfather paradox and the Novikov self-consistency principle. Grandfather paradox is a logical contradiction of time travel. Mendham (2005) states that â€Å"This is a very simple idea with serious repercussions for the concept of time travel. Lets say that I invent a time machine and travel into the past. I meet my own grandfather when he was a boy and kill him. The result? One of my parents is never born, therefore I can never be born† . But, a resolution of this paradox was discussed. Mendham (2005) further expained that â€Å"An interesting technical approach to resolving the paradox 8 is the Novikov self-consistency principle proposed by Dr. Igor Novikov. This essentially says that paradoxes wont happen its impossible to create a paradox however hard you try. In this view the universe is in some way self-righting. If you attempt to shoot your grandfather then something will go wrong youll miss, the gun will jam, etc. Or, if you succeed, youll later learn that your father was adopted; so he still gets born and still marries your mother. This reminds me of the anthropic principle: the universe is this way because if it wasnt we wouldnt be here†. Therefore, there is always a possibility traveling forwards and backwards . In conclusion, time travel is possible even though some say it is not. Studies confirmed that time travel is possible. Although others have presented a paradox, the resolutions have also been made. The methods of traveling forwards and backwards are elaborated and they really help in a way to make time travel possible. In addition, critics didnt clearly prove that time travel will be impossible. Therefore, the issue on time travel has been solved even though no one has actually experienced time travel much as we see in movies. In the end, the future development of our technology is in the hands of our scientists and the possibility of time travel is also at them. 9 Bibliography Brian. (2001). Brians View on Time Travel and Interdimensional Voyages. Available: http://www. brianbosak. com/ Crystalinks. (2010). Time Travel. Available: http://www. crystalinks. com/timetravel. html Cutnell, J. D. Johnson, K. W. (2006 ) . Essentials of Physics (1st ed. ). USA: John Wiley Sons, Inc. Gott, J. R. (2002). Time Travel in Einsteins Universe: The Physical Possibilities of Travel Through Time. Boston: Mariner Books. Hawking, S. (2010). Stephen Hawking: â€Å" Time Travel To The Future Is Possible†. Available: http://www. dailygalaxy. com/my_weblog/2010/07/stephen-hawking-time-travel-to-the-future-is-possible. html Kulkarni, D. (2011). thus Time Travel is Possible. Available: http://www. buzzle. com/editorials/6-20-2004-55679. asp Mendham, T. (2005). Time Travel Paradoxes. Available: http://www. horology-stuff. com/time/travel/paradox. html Miller, Kristie (2005). Time travel and the open future. Disputatio Nahin, Paul J. (2001). Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction. Springer-Verlag New York Inc.. Toomey, David (2007). The New Time Travelers: A Journey to the Frontiers of Physics. W. W. Norton Company.

The Horror of Dystopia Revealed by Neuromancer Essay -- Neuromancer Es

The Horror of Dystopia Revealed by Neuromancer When William Gibson's futuristic novel Neuromancer   was first published, it seemed farfetched that technology could reach the level of sophistication he described. Science fiction movies have since repeated and expanded upon this theme, portraying corporate anxieties and paranoid fears of people to be controlled by aliens, man-made machines and artificial intelligence. Neuromancer takes us into the subculture of cyberpunk, a dystopia of an amoral society ruled by abstract powers. Gibson creates a world of fear and terror where technology permeates this futuristic world into its smallest detail and instead of serving humanity, rises to become its ruler and God. The futuristic historical context, into which Neuromancer is embedded, suggests syntactically a World War III between the presence and the time of the novel.The reader is introduced to the new world power Japan throughout the novel, while a remnant of european/western power and culture resides in the space colony Freeside as well as in the scattered pieces of artwork in the office of a criminal Chiba boss, Julius Deane. The novel plays on the audience's fear of an asian take-over of the world and the destruction of Europe. The American reader, rooted in western cultural values, will therefore sympathize with the expatriates in the Chatsubo bar in Chiba, attracked and repelled at the same time by this frightening environment. The novel takes the reader into "Night City" (pg. 4), the decayed inner part of Chiba, which lives at night and is "shuttered and featureless" (pg. 6) during the day," waiting, under the poisoned silver sky" (pg. 7). The author uses techno images to describe the natural environment, "the sky... ...ty of the human brain utilized as a computer modem to operate multi- national capitalistic corporations shows frightening possibilities for the future of everyday human life. The main issues of this dystopia, exaggerated and distorted as they are in the novel, originate from existing problems in our society. Discussions about cloning and genetic engineering, as well as robotics places our society at a crossroad, how to develop future strategies for an appropriate technology. The other concept imbedded in Neuromancer dates back to Plato's idea of dualism, prioritizing mind over body, men over women and logic over emotions. Gibson shows us a possibility of a future, certainly not one we want, but the dangers of which we have to consider in order to create a better world and not to destroy it. Works Cited: Gibson, William. Neuromancer. New York: Ace Books, 1984. The Horror of Dystopia Revealed by Neuromancer Essay -- Neuromancer Es The Horror of Dystopia Revealed by Neuromancer When William Gibson's futuristic novel Neuromancer   was first published, it seemed farfetched that technology could reach the level of sophistication he described. Science fiction movies have since repeated and expanded upon this theme, portraying corporate anxieties and paranoid fears of people to be controlled by aliens, man-made machines and artificial intelligence. Neuromancer takes us into the subculture of cyberpunk, a dystopia of an amoral society ruled by abstract powers. Gibson creates a world of fear and terror where technology permeates this futuristic world into its smallest detail and instead of serving humanity, rises to become its ruler and God. The futuristic historical context, into which Neuromancer is embedded, suggests syntactically a World War III between the presence and the time of the novel.The reader is introduced to the new world power Japan throughout the novel, while a remnant of european/western power and culture resides in the space colony Freeside as well as in the scattered pieces of artwork in the office of a criminal Chiba boss, Julius Deane. The novel plays on the audience's fear of an asian take-over of the world and the destruction of Europe. The American reader, rooted in western cultural values, will therefore sympathize with the expatriates in the Chatsubo bar in Chiba, attracked and repelled at the same time by this frightening environment. The novel takes the reader into "Night City" (pg. 4), the decayed inner part of Chiba, which lives at night and is "shuttered and featureless" (pg. 6) during the day," waiting, under the poisoned silver sky" (pg. 7). The author uses techno images to describe the natural environment, "the sky... ...ty of the human brain utilized as a computer modem to operate multi- national capitalistic corporations shows frightening possibilities for the future of everyday human life. The main issues of this dystopia, exaggerated and distorted as they are in the novel, originate from existing problems in our society. Discussions about cloning and genetic engineering, as well as robotics places our society at a crossroad, how to develop future strategies for an appropriate technology. The other concept imbedded in Neuromancer dates back to Plato's idea of dualism, prioritizing mind over body, men over women and logic over emotions. Gibson shows us a possibility of a future, certainly not one we want, but the dangers of which we have to consider in order to create a better world and not to destroy it. Works Cited: Gibson, William. Neuromancer. New York: Ace Books, 1984.

A Peaceful Evacuation Essay

The purpose of this paper is to explain what leadership style Lieutenant Colonel Yaron exhibited as the commander of battalion for the evacuation operations. This paper will give three examples of his leadership action and behaviors. This paper will also analyze the leadership style that Lieutenant Colonel Daniel exhibited and give three examples of his leadership action and behaviors. It will discuss the pros and cons of each example given. This paper will then compare and contrast the two Lieutenants and it will take a look at the interrelationship using Jung theory and the four personality traits. Lieutenant Colonel Yaron There are many types of leadership styles one can only imagine what type of leader one would need to be in order to handle the difficult task at hand that Lieutenant Colonel Yaron had to encounter. Yaron displayed two types of leaders: directive and participative. During his trial on striving to gain a grasp on what he should do to make this project successful he had many face-to face meetings, telephone calls, and email communications with some top officers in the air force. He was very hands on when it came to approaching commanders of units so he could find suitable soldiers for his task. He even stated himself that he â€Å"finally felt direct openness and communication between the senior commander and his subordinates† (Laufer, 2012). Yaron needed that feeling that everyone was on the same page and he didn’t want to move forward with a plan until he knew that everyone one was. This was all a ploy to make sure that the morale level was at one and it worked just nicely. What makes Yarn a participative leader is him putting himself in the same situation that one of his soldiers may be in. for example the visited a home that one of his soldiers would be coming into soon to remove the people within. That experience made him see how settlers were emotionally and how to tell his soldiers how to address the settlers. It was that firsthand experience that made his mission a peaceful mission. The pros of being a directive leader in Yaron case is that he had open communication several departments so everyone was on the same page. This helped keep the lines of communication seamless so there should be no reason  to wonder what Yaron wanted and how he wanted to do it. The cons in having this time of leadership in Yaro n’s case is that there were many people that didn’t want to follow his plan at first. This could have caused people to rally up against him spread false word about him eventually driving him out of the position he was appointed to. Sometimes keeping information to oneself is half the battle won. Not everyone should know the cards that you hold in your hand. Yaron Him putting himself in the â€Å"battlefield† is great as far as experience is concerned. He was able to relate to the settlers and give that valuable information over to his battalion so they would be prepared. The best teacher is experience. The con of that could have been him being injured and now the army would have to find another leader to help the soldiers remove the settlers from Gaza. Being a leader at times means putting you self in harm’s way. Lieutenant Colonel Daniel Lieutenant Colonel Daniel style was that of consultative and participative leadership style. This is shown by Daniels working with a team of psychologist to help refine the guidelines for the evacuation project. He went through several think tanks to see what would work best for the mission at hand. Once he was able to find the best method he then set up workshops. â€Å"In these workshops, participates were trained to evacuate children and families form their home and to cope with the possibility of evacuation under fire and violence on the part of the settlers† (Laufer, 2012). Daniel was concerned about the mental and emotional well being of both the evacuators and evacuees. The cons of being this type of leader is it helps to display an culture of trust where the members of they team know that you have their best interest in mind and will make sure that any actions that are taken will help ensure you are protected and cared for. It also helps the leader serve as a figure he ad of the group and gains respect from the members of the group. The con to this is that it could be looked at as a weakness. Many times leaders have to make decisions that are not popular with the masses of the group. They make decisions that are bigger than the group but reaps a better benefit for the project as a whole. If a leader was to be so focused on their member’s feelings or concerns it could cloud their judgment and show weakness in their ability to make decisions. Lieutenant Colonel Yaron verse Lieutenant Colonel Daniel Lieutenant Colonel Yaron and Lieutenant Colonel Daniel have some leadership qualities in common such as they both care about their evacuators and evacuates. They both wanted to make sure that both parities involved understood the dynamics of what was attempting to be done and wanted both parties to be mentally and physically prepared of what may happen. Both Yaron and Daniel took advice from others around them to ensure they were making the best decision. They were not afraid to revamp and try another method in order to complete their mission. Also they both wanted a peaceful outcome of their removal of the Jews from Gaza. End the end the goal was clear to make sure both parties left unharmed and to have the least amount of confusion as possible. When looking at the differences in the leadership roles it safe to say that Yaron took this mission on as his own personal challenge, â€Å"Yaron, who perceived it as a personal challenge, immediately responded favorably and one week later was informed that the Air Force Commander had approved his appointment† (Laufer, 2012). Daniel on the other hand was just trying to help out the mission no personal attachments were needed for him. Yaron took on many roles as he was coming up with solution for the evacuation such as being apart of the planning team, training team and chief supplier. Yaron also differed from Daniels because he actually went out to meet evacuates to see how the felt and to see the environment that the soldiers would be working in. This is what gave him the upper hand on making his mission successful. He was afraid to do of him self what he asked his soldiers to do. Today both of these types of leaders still live today so it’s safe to say that they would lead in the same fashion as they did before. One is not better that the other though one should be over a different project than the other. The Jung theory and personality traits would consider individualism, these gentlemen acted as though they were content and satisfied with their outcome and decision made to retrieve their outcome, indicating individualism or persona being used. Both had some type of spirituality and or alchemy involved when making their decision, this can be seen by the sensitivity being used doing the evacuation process. Conclusion In conclusion Lieutenant Colonel Yarn and Lieutenants Colonel Daniel had many  personality traits in common and those that differed from each other. At the end of their evacuation both leaders used what traits they had within them to make the best possible decision that they both thought worked best for them and the members involved. This just goes to show that there is no wrong way to lead as long as everyone has the same goal to achieve. Reference: Laufer, A. (2012). Mastering the leadership role in project management: Practices that deliver remarkable results. Upper Saddle River, NJ: Prentice-Hall-Pearson A Peaceful Evacuation Essay According to Vance Packard, leadership appears to be the art of getting others to want to do something that you are convinced should be done (Lewis, 2003). Leadership is a pertinent part of project management. James Lewis (2003) says leadership is not a position; it’s the ability to gain commitment from people. According to Professor Warren G. Bennis, â€Å"Leaders are people who do the right thing; managers are people who do things right†. The importance of leadership in a project is demonstrated in the case study, â€Å"A Peaceful Evacuation: Building a Multi-Project Team Battalion by Leading Upward†. This case study involves two leaders, who had similar, but mostly, different leadership styles and strategies. Lieutenant Colonels Yaron and Daniel were both put in charge of enforcing a Disengagement Plan brought forth by Israeli Prime Minister Ariel Sharon and finding the best course of action to evacuate settlements along the Gaza Strip. In this essay, I will a nalyze the leadership styles of Lieutenant Colonels Yaron and Daniel and provider three examples of the leadership actions and behaviors for each subject. This essay will then compare and contrast the Lieutenants and will examine the interrelationship using the four personality traits and the Jung theory. Lieutenant Colonel Daniel, the chief psychologist of the Southern Command, felt that research was the first step in the project. Daniel conducted searched to locate relevant information on the topic of evacuation to learn from the experience of the past (Laufer, 2012). In the case study, Daniel uses adaptive and participative leadership styles. An adaptive leadership style is a fluid style that takes into consideration the context of the environment and the individual being led. For example, Daniel says, â€Å"Due to the complex situation, we were concerned that the emotional burden on the soldiers would be too heavy†¦Our success will be measured by the ability to help find the correct balance between determination and sensitivity†. A participative leadership style seeks input from others and participates with those they are leading in the decision making process. An example of this leadership style is when Daniel gathered other Israeli Defense Forces (IDF) psychologists for a â€Å"day of thinking together,† with the objective of  expressing and listening to their different opinions about potential problems that may arise in the evacuation project (Laufer, 2012). Daniel’s strategy was to brainstorm to identify key issues and mitigate risks. He felt that preparation was the key to completing the mission. Daniel also used the term â€Å"we†, instead of â€Å"I†. His group of psychologists worked as team to identify how to execute the mission according to the government’s guidelines while ensuring that the damage incurred during the evacuation itself would be minimal. Lieutenant Colonel Yaron displayed two types of leadership styles: directive and participative. Directive style is telling people what to do and expecting them to jump right to it. It is one of the oldest styles and frequently called autocratic. Yaron was accustomed to being lead with this style so, in turn; he used the same leadership style to lead. Yaron was very hands-on and encouraged the battalion’s company commanders to initiate ongoing meetings with their soldiers. Yaron met, called and emailed with some of the top officers in the air force. He made immediate inquiries with the top colonels through face-to-face meetings, telephone calls, and email communication. Because of this style, Yaron found that the quality and motivation of certain staff fell far short of meeting his needs (Laufer, 2012). Yaron wanted to make sure that everyone was on the same page. Yaron is a participative leader because he went to tour the settlement first hand. He wanted to know what his batta lion would have to deal with. By visiting the settlement, Yaron realized that the mission could not be successful with average squad leaders. Squad leaders must be top notch because they will be the ones interacting with the people. A Peaceful Evacuation Essay Describe the leadership style that Lieutenant Colonel Yaron exhibited as the commander of a battalion for theevacuation operation. Provide three (3) examples of his leadership actions and behavior. Discuss the pros and cons in each example you describe to support the response. Analyze the leadership style that Lieutenant Colonel Daniel exhibited as he took center stage to lead this complex military operation. Provide three (3) examples of his leadership actions and behavior, assessing the pros and cons in each example you describe to support the response. Compare and contrast the leadership styles of Lieutenant Colonel Yaron and Lieutenant Colonel Daniel. Provide three (3) examples of the similarities and differences between these project leaders, and discuss how each leader might address contemporary leadership issues and challenges in Israel today. Discuss Lieutenant Colonel Yaron and Lieutenant Colonel Daniel interrelationship using Jung theory and the four (4) personality traits. Provide three (3) examples of how Lieutenant Colonel Yaron and Lieutenant Colonel Daniel personality and leadership style might enhance or hinder team performance for the complex military operation in this case study. Your assignment must: Be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides; citations and references must follow APA or school-specific format. Check with your professor for any additional instructions. Include a cover page containing the title of the assignment, the student’s name, the professor’s name, the course title, and the date. The cover page and the reference page are not included in the required assignment page length. The specific course learning outcomes associated with this assignment are: Apply the concepts of project leadership to implement sound leadership practices and effectively lead high-performance teams in a project environment. Determine the most appropriate leadership style (e.g., directive, consultative, participative, or delegative) in a projectenvironment to effectively manage the project. Analyze the project team using Jung theory and the four personality traits to understand human  behavior and motivate team members Use technology and information resources to research issues in project management leadership. Write clearly and concisely about project management leadership using proper writing mechanics. A Peaceful Evacuation Essay Abstract The purpose of this paper is to explain what leadership style Lieutenant Colonel Yaron exhibited as the commander of battalion for the evacuation operations. This paper will give three examples of his leadership action and behaviors. This paper will also analyze the leadership style that Lieutenant Colonel Daniel exhibited and give three examples of his leadership action and behaviors. It will discuss the pros and cons of each example given. This paper will then compare and contrast the two Lieutenants and it will take a look at the interrelationship using Jung theory and the four personality traits. Lieutenant Colonel Yaron There are many types of leadership styles one can only imagine what type of leader one would need to be in order to handle the difficult task at hand that Lieutenant Colonel Yaron had to encounter. Yaron displayed two types of leaders: directive and participative. During his trial on striving to gain a grasp on what he should do to make this project successful he had many face-to face meetings, telephone calls, and email communications with some top officers in the air force. He was very hands on when it came to approaching commanders of units so he could find suitable soldiers for his task. He even stated himself that he â€Å"finally felt direct openness and communication between the senior commander and his subordinates† (Laufer, 2012). Yaron needed that feeling that everyone was on the same page and he didn’t want to move forward with a plan until he knew that everyone one was. This was all a ploy to make sure that the morale level was at one and it worked just nice ly. What makes Yarn a participative leader is him putting himself in the same situation that one of his soldiers may be in. for example the visited a home that one of his soldiers would be coming into soon to remove the people within. That experience made him see how settlers were emotionally and how to tell his soldiers how to address the settlers. It was that firsthand experience that made his mission a peaceful mission. The pros of being a directive leader in Yaron case is that he had open communication several departments so everyone was on the same page. This helped keep the lines of communication seamless so there should be no reason to wonder what Yaron wanted and how he wanted to do it. The cons in having this time of leadership in Yaron’s case is that there were many people that didn’t want to follow his plan at first. This could have caused people to rally up against him spread false word about him eventually driving him out of the position he was appointed to. Sometimes keeping information to oneself is half the battle won. Not everyone should know the cards that you hold in your hand. Yaron Him putting himself in the â€Å"battlefield† is great as far as experience is concerned. He was able to relate to the settlers and give that valuable information over to his battalion so they would be prepared. The best teacher is experience. The con of that could have been him being injured and now the army would have to find another leader to help the soldiers remove the settlers from Gaza. Being a leader at times means putting you self in harm’s way. Lieutenant Colonel Daniel Lieutenant Colonel Daniel style was that of consultative and participative leadership style. This is shown by Daniels working with a team of psychologist to help refine the guidelines for the evacuation project. He went through several think tanks to see what would work best for the mission at hand. Once he was able to find the best method he then set up workshops. â€Å"In these workshops, participates were trained to evacuate children and families form their home and to cope with the possibility of evacuation under fire and violence on the part of the settlers† (Laufer, 2012). Daniel was concerned about the mental and emotional well being of both the evacuators and evacuees. The cons of being this type of leader is it helps to display an culture of trust where the members of they team know that you have their best interest in mind and will make sure that any actions that are taken will help ensure you are protected and cared for. It also helps the leader serve as a figure he ad of the group and gains respect from the members of the group. The con to this is that it could be looked at as a weakness. Many times leaders have to make decisions that are not popular with the masses of the group. They make decisions that are bigger than the group but reaps a better benefit for the project as a whole. If a leader was to be so focused on their member’s feelings or concerns it could cloud their judgment and show weakness in their ability to make decisions. Lieutenant Colonel Yaron verse Lieutenant Colonel Daniel Lieutenant Colonel Yaron and Lieutenant Colonel Daniel have some leadership qualities in common such as they both care about their evacuators and evacuates. They both wanted to make sure that both parities involved understood the dynamics of what was attempting to be done and wanted both parties to be mentally and physically prepared of what may happen. Both Yaron and Daniel took advice from others around them to ensure they were making the best decision. They were not afraid to revamp and try another method in order to complete their mission. Also they both wanted a peaceful outcome of their removal of the Jews from Gaza. End the end the goal was clear to make sure both parties left unharmed and to have the least amount of confusion as possible. When looking at the differences in the leadership roles it safe to say that Yaron took this mission on as his own personal challenge, â€Å"Yaron, who perceived it as a personal challenge, immediately responded favorably and one week later was informed that the Air Force Commander had approved his appointment† (Laufer, 2012). Daniel on the other hand was just trying to help out the mission no personal attachments were needed for him. Yaron took on many roles as he was coming up with solution for the evacuation such as being apart of the planning team, training team and chief supplier. Yaron also differed from Daniels because he actually went out to meet evacuates to see how the felt and to see the environment that the soldiers would be working in. This is what gave him the upper hand on making his mission successful. He was afraid to do of him self what he asked his soldiers to do. Today both of these types of leaders still live today so it’s safe to say that they would lead in the same fashion as they did before. One is not better that the other though one should be over a different project than the other. The Jung theory and personality traits would consider individualism, these gentlemen acted as though they were content and satisfied with their outcome and decision made to retrieve their outcome, indicating individualism or persona being used. Both had some type of spirituality and or alchemy involved when making their decision, this can be seen by the sensitivity being used doing the evacuation process. Conclusion In conclusion Lieutenant Colonel Yarn and Lieutenants Colonel Daniel had many  personality traits in common and those that differed from each other. At the end of their evacuation both leaders used what traits they had within them to make the best possible decision that they both thought worked best for them and the members involved. This just goes to show that there is no wrong way to lead as long as everyone has the same goal to achieve. Reference: Laufer, A. (2012). Mastering the leadership role in project management: Practices that deliver remarkable results. Upper Saddle River, NJ: Prentice-Hall-Pearson

An Analysis of The Great Gatsby by F. Scott Fitzgerald

â€Å"Everyone suspects himself at least one of the cardinal virtues and this is mine: I am one of the few honest people that I have ever known. †-Nick Carraway. Nick is an impartial, honest, and loyal character. He gives readers a detailed, accurate account of the events pertaining to Gatsby’s life. Nick spends time with Gatsby and Tom even though they do not like each other. In The Great Gatsby, by F. Scott Fitzgerald, the color gray is continually used to show Nick’s impartiality to the characters and conflicts. Throughout the whole book, there is tension between Tom and Gatsby since they both want Daisy to love them.Nick acts as a friend to both characters; he spends time with Tom going out on the town, and with Gatsby attending parties every weekend. â€Å"Gray cars, ash gray men,† is a phrase used on page 23 as a color reference to Nick’s neutrality between the two opposing characters. Nick comes off as a very honest character to readers and o ther characters in the book. On page 19 Daisy says to Nick, â€Å"You remind me of a-of a rose, an absolute rose. † The red color of the rose represents his passion and care for other people.He looks out for all of the other characters throughout the book even while he struggles with his own personal concerns and struggles. When Gatsby offers to let Nick join in his gambling, Nick refuses; he wants to make an honest living. Nick remains loyal to Gatsby after his death when all of his other friends do not. Out of all of the people that Gatsby knew, Nick was one of three that attended his funeral. Other people pretended to be Gatsby’s friend just to get to attend parties or take advantage of him, but Nick actually cared for Gatsby and remained loyal to him throughout the entire story.On page 188 the phrase â€Å"on the white steps,† represents peace. Nick valued peace and friendship which went along with his loyalty to Gatsby. Though Nick, like the other character s in the book, has some faults, he remains impartial, honest, and loyal. Nick’s demeanor allowed him to provide an honest, accurate account of the events of Gatsby’s life. He told us the story to the best of his ability and through that story we can learn more about Nick and ourselves.

Timeline of Events in Ancient Babylonia

Timeline of Events in Ancient Babylonia [Sumer Timeline] Late 3rd Millennium B.C. Babylon exists as a city.Shamshi-Adad I (1813 - 1781 B.C.), an Amorite, has power in northern Mesopotamia, from the Euphrates River to the Zagros Mountains. Â   1st Half of 18th Century B.C. 1792 - 1750 B.C. Collapse of Shamshi-Adads kingdom after his death. Hammurabi incorporates all of southern Mesopotamia into the kingdom of Babylon. 1749 - 1712 B.C. Hammurabis son Samsuiluna rules. The course of the Euphrates River shifts for unclear reasons at this time. 1595 Hittite king Mursilis I sacks Babylon. Sealand Dynasty kings appear to rule Babylonia after the Hittite raid. Almost noting is known of Babylonia for 150 years after the raid. Kassite Period Mid-15th Century B.C. The non-Mesopotamian Kassites take power in Babylonia and re-establish Babylonia as the power in the southern Mesopotamian area. Kassite-controlled Babylonia lasts (with a short break) for about 3 centuries. It is a time of literature and canal building. Nippur is rebuilt. Early 14th Century B.C. Kurigalzu I builds Dur-Kurigalzu (Aqar Quf), near modern Baghdad probably to defend Babylonia from northern invaders. There are 4 major world powers, Egypt, Mitanni, Hittite, and Babylonia. Babylonian is the international language of diplomacy. Mid-14th Century Assyria emerges as a major power under Ashur-uballit I (1363 - 1328 B.C.). 1220s Assyrian king Tukulti-Ninurta I (1243 - 1207 B.C.) atttacks Babylonia and takes the throne in 1224. Kassites eventually depose him, but damage has been done to the irrigation system. Mid-12th Century Elamites and Assyrians attack Babylonia. An Elamite, Kutir-Nahhunte, captures the last Kassite king, Enlil-nadin-ahi (1157 - 1155 B.C.). 1125 - 1104 B.C. Nebuchadrezzar I rules Babylonia and retakes the statue of Marduk the Elamites had taken to Susa. 1114 - 1076 B.C. Assyrians under Tiglathpileser I sack Babylon. 11th - 9th Centuries Aramaean and Chaldean tribes migrate and settle in Babylonia. Mid-9th to End of the 7th Century Assyria increasingly dominates Babylonia.Assyrian king Sennacherib (704 - 681 B.C.) destroys Babylon. Sennacheribs son Esarhaddon (680 - 669 B.C.) rebuilds Babylon. His son Shamash-shuma-ukin (667 - 648 B.C.), takes the Babylonian throne.Nabopolassar (625 - 605 B.C.) gets rid of the Assyrians and then strikes against the Assyrians in a coalition with Medes in campaigns from 615 - 609. Neo-Babylonian Empire Nabopolassar and his son Nebuchadrezzar II (604 - 562 B.C.) rule the western part of the Assyrian Empire. Nebuchadrezzar II conquers Jerusalem in 597 and destroys it in 586.Babylonians renovate Babylon to suit the capital city of an empire, including 3 square miles enclosed in city walls. When Nebuchadnezzar dies, his son, son-in-law, and grandson assume the throne in rapid succession. Assassins next give the throne to Nabonidus (555 - 539 B.C.).Cyrus II (559 - 530) of Persia takes Babylonia. Babylonia is no longer independent. Source: James A. Armstrong Mesopotamia The Oxford Companion to Archaeology. Brian M. Fagan, ed., Oxford University Press 1996. Oxford University Press.

Free Essays on Trifles

Sitting Alone in Thought The truth about male and female relationships really comes to life by author Susan Gaspell in â€Å"Trifles†. Gaspell examines male and female relationships, how a controlling spouse, and lack of communication can lead to the deterioration in relationships, which inevitably leads too a woman seeking change in her life. Gaspell shows that some relationships are not warm and loving, but are dominated by a controlling spouse. The Author makes you feel that all John wanted to do was control someone’s life, exactly as he had been doing to Minnie. He controlled her life to the extent that he would not allow her to even have a â€Å"party telephone† (952) placed in their home, this would have allowed her access to the outside world, and he did not want that. It was apparent that John did not allow Minnie to have a social life, as she once had when she was Minnie Foster, the woman that sang in the â€Å"choir† (956). Minnie was isolated from the rest of the world; their house was â€Å"down in a hollow† (958) unable to be seen from the road. There house was a lonesome place where no visitors ever came, not even the people that knew they were there. Gaspell shows that Minnie was controlled by John so much that when she made the decision to buy a canary that â€Å"sangâ₠¬  (960) to her, he â€Å"choked the life out of it† (960), just as he had been doing for many years to Minnie. A controlling relationship never ends happily; at Kearney 2 least that is how Gaspell perceived their relationship. Besides a controlling spouse, lack of communication can be an oblivious reason for relationship problems. Gaspell examines this, and the result of what can happen in marriages and friendships that suffer when a communication breakdown occurs, she does this through three different couples. The first couple she examined was John and Minnie Wright who lived in â€Å"peace and quite† (952), they had no friends or visitors ... Free Essays on Trifles Free Essays on Trifles Worrying over Trifles In Susan Glaspell’s Trifles, she without a doubt challenges the morals, beliefs, and values of her audience. The play begins in an old Midwestern farmhouse. George Henderson, Henry Peters, Lewis Hale, Mrs. Peters, and Mrs. Hale enter the Wright residence to try to unravel a murder mystery. As the play unfolds, readers learn more of how isolated and unhappy Mr. And Mrs. Wright was. Although these two characters have no lines and are never seen on stage, the audience carefully learns who the assassin is through careful observations by Mrs. Peters and Mrs. Hale. The others, George Henderson, Henry Peters, and Lewis Hale, seem to overlook significant details that may lead them to solving the murder. In spite of the terrible tragedy, one must come to a decision whether the murder is a sin or a blessing. In Trifles, the men and women demonstrate their many differences through their thought process and the women’s sympathy for the accused. The men portrayed in the play show few differences in their views and opinions. George Henderson plays the county attorney. He is at the Wright house to investigate the murder and question the witness. Henry Peters accompanies the county attorney as the sheriff in hope to solve the crime. The witness, Lewis Hale, is the one who found Mrs. Wright sitting in her rocking chair after her husband passes. All three men prove themselves condescending and proud throughout the play. In the opening of the play, the men comfortably walk in the home as if nothing tragic has occurred. Throughout the rest of the performance, there are many references to women and how they are less significant to men. Glaspell, through Lewis Hale’s character, gives a passive statement that confirms early judgment of women: â€Å"Well, women are used to worrying over trifles† (1240). The sheriff and the county attorney both support Hale in other statements directed towards the women. COUNT... Free Essays on Trifles Sitting Alone in Thought The truth about male and female relationships really comes to life by author Susan Gaspell in â€Å"Trifles†. Gaspell examines male and female relationships, how a controlling spouse, and lack of communication can lead to the deterioration in relationships, which inevitably leads too a woman seeking change in her life. Gaspell shows that some relationships are not warm and loving, but are dominated by a controlling spouse. The Author makes you feel that all John wanted to do was control someone’s life, exactly as he had been doing to Minnie. He controlled her life to the extent that he would not allow her to even have a â€Å"party telephone† (952) placed in their home, this would have allowed her access to the outside world, and he did not want that. It was apparent that John did not allow Minnie to have a social life, as she once had when she was Minnie Foster, the woman that sang in the â€Å"choir† (956). Minnie was isolated from the rest of the world; their house was â€Å"down in a hollow† (958) unable to be seen from the road. There house was a lonesome place where no visitors ever came, not even the people that knew they were there. Gaspell shows that Minnie was controlled by John so much that when she made the decision to buy a canary that â€Å"sangâ₠¬  (960) to her, he â€Å"choked the life out of it† (960), just as he had been doing for many years to Minnie. A controlling relationship never ends happily; at Kearney 2 least that is how Gaspell perceived their relationship. Besides a controlling spouse, lack of communication can be an oblivious reason for relationship problems. Gaspell examines this, and the result of what can happen in marriages and friendships that suffer when a communication breakdown occurs, she does this through three different couples. The first couple she examined was John and Minnie Wright who lived in â€Å"peace and quite† (952), they had no friends or visitors ... Free Essays on Trifles In reading the play â€Å"Trifles† the reader learns that two of the main characters, Mrs. Hale and Mrs. Peters, suppress evidence that will help the county attorney establish the motive behind the murder of John Wright. I feel that the two women are morally obligated to tell the county attorney what they know. It’s the law plain and simple, and I believe in following the law. However, if it were me in the same situation I would have hidden the evidence too. To understand the moral dilemma that faces Mrs. Hale and Mrs. Peters, a few key topics need to be brought to light. Such as some of the major symbols which are used as metaphors in this play, the role of women in 1916, and some character analysis on the two women. The first one is the comparison between Mrs. Wright and a bird. Mrs. Wright is described by Mrs. Hale as â€Å"kind of like a bird herself†. This was before her marriage to John Wright. However, birds are forced to live in cages, just as Minnie was forced to live in an abusive relationship in which her husband takes away all of her freedom. Another important metaphor in this play is the rocking chair. â€Å"The chair sagged to one side†. Mrs. Hale stated that the chair was not anything like she remembered. This can be compared to how Mrs. Hale remembered Minnie years ago. â€Å"I wish you’d seen Minnie Foster when she wore a white dress with blue ribbons and stood up there in the choir and sang†. Notice how she refers to Minnie by using her maiden name. This shows how Minnie Foster, who was once something to look at, became the run down looking Minnie Wright. Just as the rocking chair depreciated, so did Mrs. Wright. Next, it is important to discuss the role of females at the time the play was written. We can start with the title. While it is known that the word trifle simply means something unimportant or of little value, the word is used in this play to convey how the men considered women’s dut... Free Essays on Trifles Literary Analysis of â€Å"Trifles† In Trifles, by Susan Glaspell, two women battle with a decision that could change the fate of a woman who is assumed to have killed her husband. They are at the Wright house to gather some things to bring to Minnie and start to analyze the things in her kitchen. Mrs. Peter and Mrs. Hale talk about how Minnie was such a good woman before she married. They start to battle with the thought that she may have actually killed her husband. Women in the early 1900’s were considered second class. They were house wives and nothing more. Mrs. Peters and Mrs. Hale discuss everyday things in Minnie’s kitchen such as her fruit and her bread that was set and ready to be baked. Suddenly Mrs. Peters asks Mrs. Hale â€Å"Do you think she did it?† These two women know that Minnie would have had a motive but did not want to say it out loud. They continually bring up how â€Å"Minnie Foster† used to be. â€Å"†¦one of the town girls singing in the choir.† It is constantly inferred that John Wright was bad husband who changed her. Ables 2 They had no children which left her home lonely along with the fact that he was not much company when he came home. There is a large amount of foreshadowing in this play. The women find a bird cage in the cupboard with a broken door. They know that this is an abnormal finding. They come to the conclusion that she had a canary to keep her company. It also sang beautifully, something to remind her of how her life was before she was with John Wright, she used to sing and be sweet. Mrs. Peters and Mrs. Hale also discover her quilting and find one that is messy and out of place. Mrs. Hale also knows that this is out of place and begins to fix it. Somehow these two women know that if the men see these things they will use them against her. Unknowingly they hide things that are potentional evidence. They know, but never say, that Minnie killed her husband ...

Asking Better Questions with Blooms Taxonomy

Asking Better Questions with Bloom's Taxonomy Benjamin Bloom is known for developing the taxonomy of higher level thinking questions. The taxonomy provides categories of thinking skills that help educators formulate questions. The taxonomy begins with the lowest level thinking skill and moves to the highest level of thinking skill. The six thinking skills from lowest level to highest level are KnowledgeComprehensionApplicationAnalysisSynthesisEvaluation To really understand what this means, lets take Goldilocks and the 3 Bears and apply Blooms taxonomy. Knowledge Who was the biggest bear? What food was too hot? Comprehension Why didnt the bears eat the porridge?Why did the bears leave their house? Application List the sequence of events in the story.Draw 3 pictures showing the beginning, middle and ending of the story. Analysis Why do you think Goldilocks went for a sleep?How would you feel if you were Baby Bear?What kind of person do you think Goldilocks is and why? Synthesis How could you re-write this story with a city setting?Write a set of rules to prevent what happened in the story. Evaluation Write a review for the story and specify the type of audience that would enjoy this book.Why has this story been told over and over again throughout the years?Act out a mock court case as though the bears are taking Goldilocks to court. Blooms taxonomy helps you to ask questions that make learners think. Always remember that higher level thinking occurs with higher level questioning. Here are the types of activities to support each of the categories in Blooms Taxonomy: Knowledge LabelListNameStateOutlineDefineLocateRepeatIdentifyRecite Comprehension DiscussExplainProvide proof ofProvide an outlineDiagramMake a posterMake a collageMake a cartoon stripAnswer who, what, when, where, why questions Application ReportConstructSolveIllustrateConstructDesign Analysis SortAnalyzeInvestigateClassifySurveyDebateGraphCompare Synthesis InventExamineDesignFormulateHypothesizeRe-tell differentlyReportDevelop a gameSongExperimentGenerateCompose Evaluation SolveJustifySelf-evaluateConcludeDo an editorialWeight the pros/consMock trialGroup discussionJustifyJudgeCriticizeAppraiseJudgeRecommendation backed with informed opinionsWhy do you think.... The more you move toward higher level questioning techniques, the easier it gets. Remind yourself to ask open ended questions, ask questions that stimulate why do you think type answers. The goal is to get them thinking. What color  hat was he wearing? is a low-level thinking question, Why do you think he wore that color? is better. Always look to questioning and activities that make learners think. Blooms taxonomy provides an excellent framework to help with this.

Divorce has different legal and social implications for the Divorce Essay

Divorce has different legal and social implications for the Divorce Arab and Muslim woman. Discuss, giving examples - Essay Example This paper critically discusses the legal and social implications of divorce for the Arab and Muslim woman with particular focus to examples in various Islamic countries. Firstly, there are a number of legal implications related to divorce in the Islamic societies particularly for women. Legally, although matters of marriage and divorce are largely governed by the Sharia law, the rules of Islamic divorce and consequently, its legal implications vary among various Islamic jurisprudence from one Muslim country to another due to different cultural traditions and practices. In most cases, the Islamic laws have always been largely seen to favor men in relation to their female counterparts in nearly all the Arab and Muslim countries. For instance, while Islam allows Muslim husbands to marry immediately after divorce, women are often required to observe a certain period of time (iddah) before they remarry or have any conjugal relations after divorce. An iddah is a period prescribed of about three months before the divorce becomes final. In most cases, the wife must remain in the home during this period to see whether a reconciliatory method of salvaging their marriage is achievable or if she is pregnant (Haddad et al 134). Another important implication of divorce for a woman in the Arab and Islamic world is the potential loss of custody of her children. For example, the legal system used in Tunisia only allows the woman to have the custody of children up to the ages of 7 for boys and 9 for girls after which the husband the custody reverts to the husband. Although the Arabic and Islamic laws do not make divorce acquiescently permissible, these laws perfectly well through its chapter-based hedges the sanctions of the practice with many defences. In the Suratul-Talaq for example, divorce is highlighted with a lot of positivity; this scripture teaches that when you divorce a woman, divorce them at their prescribed periods, and count accurately

World Travel Services Assignment Example | Topics and Well Written Essays - 750 words

World Travel Services - Assignment Example It guides the employers internally as well as helps raise capitals from external audiences. Debelak (2000) claims that marketing plan is a significant part of a business plan. It includes information about services, prices, and products. One needs to know how the main competitors are fairing because they constantly keep coming up with new strategies to attract customers. One should also consider key government policies that can affect the operational of a business when coming up with a marketing plan. Information Source of data Time Measurable information, like how to increase customers. observation Period of one year. Accessible, for example, distributing your products or services to other regions web search Within a period of 2 years. Distinguishable information, like looking at key competitors strong and weak points Internal data Within a period of I year Relevant, information in terms of developing marketing mix for each segment chosen. Surveys and questionnaires Within a period of 6 months Feasible, approaches for each segment with specific marketing program. Surveys and questionnaires Within in a period of one year Debelak (2000) claims that, market analysis comes in handy after coming up with a market plan. For example, it outlines business objectives, like increasing customers from 5 percent to 10 percent during the year. When it comes to market analysis, the world travel services may decide to distribute their services in additional states in coming years. Westwood & Institute Of Directors (2002) asserts that before a company implements expansion plans, it should first of all determine the size of each market as well as money spent on the available services, which will help forecast profits and sales in those businesses. One should also write down business key competitors, in addition to, their weaknesses and strengths. This will help World Water services have an opportunity to match their own strong and weak points. Service and product planning are a cornerstone of any business. World water services should therefore, decide if it should introduce new services, and features in the coming year or after five years. However, before introducing the service in the market, the company should test the new services through customer surveys and focus groups. For example, in such a case, World Water services can conduct a phone survey in order to determine how many customers will be willing to test their new services and how they are going to distribute it. This will help identify key advantages of one’s services and products over competitive products (McDonald, 2011). Promotional plans in such a case become an important factor that World Water services can consider. For example, it should outline various effective promotional plans that it will use in order to reach its customers. For example, for a tour company, it can consider using coupons as one of the advertising medium that will help allocate a large portion of the advertisin g budget in the marketing plan. Coupons magazines for example, can be predominant advertising medium for world water services (Westwood & Institute Of Directors, 2002). When World Water Services include market analysis, service and promotional plan, it will definitely be successful. This is because it will have all the relevant information that it needs in the future. Additionally, it will be easy to follow the above-explained steps and focus on the direction and market planning process. For example, by identifying its market competitors, it will be able to determine and realize its weak and strong points, and as a result, come up with new strategies of offering their services (Debelak, 2000). Some of the three approaches that are used to develop a sales

Creative writing bio Essay Example | Topics and Well Written Essays - 500 words

Creative writing bio - Essay Example The reason for this is that they produce the best steel in the world. After we import their steel, we produce ovens, pots and other kitchen supplies from them. I hope I will be able to succeed and take our business to the next level in future.My Learning of Other Cultures, Global Issues, and PrejudiceI have been to China, India, Kazakhstan, Romania, UAE and many other countries. My travels helped me a lot and taught me about the different cultures and the people. I liked Hong Kong more than everywhere. This may be probably because of the people who are very helpful and are always smiling and the city is so clean proper and regular. The advantage of living in Istanbul is that the people living in Istanbul are very well connected to all parts of the world because of its geographical locations. Moreover, Istanbul is now a blend of different ethnicities and I am very proud of it. I am very open-minded and I do not possess any prejudice against any nation. I actually believe that no count ry has progressed by being prejudiced. Prejudice and discrimination is something, which I am against of always. This is because the irrational attitude and opinions about one group towards other always lead to no progress. The negative prejudices can harm an individual and may even stop the individual from providing best of his own ability. I have a very open minded towards all people and countries of the world. I think that people can progress only when they work together towards their combined success.

Selfridges to Launch Gender Neutral Retail Concept Article

Selfridges to Launch Gender Neutral Retail Concept - Article Example harnessing a trend, but rather tapping into a mind-set and acknowledging and responding to a cultural shift that is happening now’†.1 The fact that the director acknowledges that the project was developed in response to a cultural shift is an indication that it is short-lived. Actually, if we are to observe current global fashion trends, different societies have exhibited diverse preferences in dressing and in exemplifying preferences to adapt fashion trends. Some cultures, especially in developed countries, have long accepted gender neutral retail concept long before the Agender project. In other traditional and conservatist countries, the concept of fashion could still be asserted as maintaining gender-based clothing. Yet, contemporary generations have increasingly accepted openness to try innovative and creative fashion statements, including those that could be considered gender-neutral fashion concepts. From the slideshow that was viewed which presented four (4) different examples of gender-neutral fashion, one affirms that although the concept could revolutionize contemporary styles, more female are accepted to wear clothes with masculine underpinnings; as contrasted to males opting to wear clothes with female-typed styles. Aside from the latter being perceived to look awkward and fairly inappropriate, more males could agree that they would not be caught wearing clothes with feminine trimmings or style. Current societies still exhibit stereotyped beliefs regarding gender-related concepts, including fashion, toys, accessories, and preferences in entertainment, sports, or music endeavors. Overall, the Agender project could just be one of the many innovative and creative fashion showcases that are short-lived. One strongly believes that the fashion statements would not evolve to become the norm. Our contemporary generations, though more open and accepting of equality in various spheres, still strongly believe in gender differences, especially in clothing

Jean Jacques Rousseau and the Declaration of Independence Essay

Jean Jacques Rousseau and the Declaration of Independence - Essay Example Jean Jacques Rousseau and the Declaration of Independence One of the ways that this can most distinctly be seen is within the founding document of the American movement of independence, the Declaration of Independence. Although many individuals doubtless influenced upon the way in which Thomas Jefferson ultimately authored the Declaration of Independence, Jean Jacques Rousseau is and was one of the most important and prominent influential factors in the way that this particular document was understood and ultimately represented. Accordingly, I will seek to draw a very clear line of distinction between some of the primary and fundamental aspects of the writings of Jean Jacques Rousseau within the document of the Declaration of Independence. However, before delving too deeply into comparisons and contrasts of the works of Rousseau and the Declaration of Independence, a further level of analysis with regards to the Declaration of Independence’s most prominent author, Thomas Jefferson, must be engaged with. Thomas Jefferson is known by m any historians to be one of the most prominent and influential founding fathers of the United States. However, he was also a very prominent philosopher, inventor, writer, and Francophile. Accordingly, it comes as little surprise that Thomas Jefferson would have leaned heavily upon the writings and understandings exhibited by Jean Jacques Rousseau as a means of crafting this fundamental explanation of how and why the United States determined to free itself from English colonial bonds. (Declaration of Independence 1). One of the most fundamental aspects of Rousseau’s understanding of political thought and theory relates to the fact that he believed in the existence of what he termed a â€Å"social contract† between â€Å"the people†. Rousseau was fundamentally opposed to the idea that the divine right of kings allowed for an efficient and/or equitable means of governance. This can, of course, be traced back to what many have termed Enlightenment thinking. He, like many enlightenment thinkers questioned whether or not the divine right of kings was sufficient evidence to compel the people into servitude. Further, his works reference the understanding that a rule by the masses would represent a far more equitable approach (Storey 748). Ultimately, this was the same belief system that not only precipitated the American Revolution but also the French Revolution shortly thereafter. Many scholars have referred to this idea as early republicanism; i.e. the belief that the people under the form of an elected government were ultimately much better able to determine their own future then the distant, and ultimately uncaring monarchy that existed at that time. Although it may be convenient to assume that Rousseau was the first political thinker to come up with such a theory, this can be traced as far back as the ancient Greeks in the form of Plato, Aristotle, and Socrates. The existence and definition of this level of freedom which each and every man sh ould exhibit was defined by Rousseau as something gifted by nature and/or of the natural order (Feinstein 14). At this juncture, the reader can aptly note the idea of self-determination, as exhibited within the Declaration of Independence, was a natural right and not something that was merely created by definition. Thomas Jefferson, and other framers of the Declaration of

Selfridges to Launch Gender Neutral Retail Concept Article

Selfridges to Launch Gender Neutral Retail Concept - Article Example harnessing a trend, but rather tapping into a mind-set and acknowledging and responding to a cultural shift that is happening now’†.1 The fact that the director acknowledges that the project was developed in response to a cultural shift is an indication that it is short-lived. Actually, if we are to observe current global fashion trends, different societies have exhibited diverse preferences in dressing and in exemplifying preferences to adapt fashion trends. Some cultures, especially in developed countries, have long accepted gender neutral retail concept long before the Agender project. In other traditional and conservatist countries, the concept of fashion could still be asserted as maintaining gender-based clothing. Yet, contemporary generations have increasingly accepted openness to try innovative and creative fashion statements, including those that could be considered gender-neutral fashion concepts. From the slideshow that was viewed which presented four (4) different examples of gender-neutral fashion, one affirms that although the concept could revolutionize contemporary styles, more female are accepted to wear clothes with masculine underpinnings; as contrasted to males opting to wear clothes with female-typed styles. Aside from the latter being perceived to look awkward and fairly inappropriate, more males could agree that they would not be caught wearing clothes with feminine trimmings or style. Current societies still exhibit stereotyped beliefs regarding gender-related concepts, including fashion, toys, accessories, and preferences in entertainment, sports, or music endeavors. Overall, the Agender project could just be one of the many innovative and creative fashion showcases that are short-lived. One strongly believes that the fashion statements would not evolve to become the norm. Our contemporary generations, though more open and accepting of equality in various spheres, still strongly believe in gender differences, especially in clothing

Business Negotiations Essay Example | Topics and Well Written Essays - 1000 words

Business Negotiations - Essay Example In American English, there exists two communication maxims, all under the quantity umbrella, which requires that whenever one speaks, then the information relayed should as much information as possible, while on the other side; the information relayed should not exceed the required informative levels. The amount of information in a communication remains essential in every communication and as such, superfluous information need to be avoided during communication in ensuring that communication meets its intended purpose.Considering the fact that maxims of conversation entail the unwritten rules of governance pertaining to how people speak to each other in some polite conversations, it is, therefore, a significant aspect that a maxim of communication acts in place of a command, directing the manner in which different people engaging in conversation carries out themselves. According to the Japanese culture, the maxims of conversation in Japanese discourse involve a number of aspects. Exp ression of feelings or emotions is critical to every human. In business, either a loss or profit is expected for any transaction done. Whenever either happens, it is expected that an individual expresses the feeling through emotions. As a contributory aspect of the diverse nature of societies and cultures, verbal behavior of the American team and that of the Japanese seem to have significantly different aspects with a realization that indeed the generalizations put in such societies are indeed very wrong.

Tourism in Antarctica Essay Example for Free

Tourism in Antarctica Essay Oil spills, although reasonably infrequent, are major threats to nearby wildlife. Increased tourism is also bringing about the invasion of alien species and spores into Antarctica, and although species such as the Mediterranean mussel will not be able to thrive on the ice shelf due to the temperatures, they can prove to be a threat to the marine wildlife when growing on ship hulls. Most tourists to Antarctica have flown to southern areas such as Punta Arenas in Chile or New Zealand. The pollution created by these long-distance flights is considerable and contributes to global warming. In addition to this, as global warming melts away floating ice sheets on the water, there will be space for larger ships to arrive, resulting in more tourists, and an increase in the issues aforementioned. Furthermore, there are the issues which are prevalent in all tourist destinations, such as litter, sewage, and overcrowding. What is being done to minimise the impact of tourism? All 100+ tour operators in Antarctica are members of IAATO (International Association of Antarctica Tour Operators), which urges tour operators to be environmentally-friendly, and to urge their clients to also do so. Tourism is very much legal and acceptable in Antarctica, and it is only the scale of this which needs to be controlled. SSSIs (Sites of Special Scientific Interest), such as Bird Island on South Georgia are laid out beforehand, and tourists are not allowed to visit these, in order to preserve wildlife and certain habitats. In order to partake in any activities on the island, a permit is required, so that this can be regulated. Ships landing in Antarctica cannot be carrying more than 500 people, with only 100 being allowed to disembark at once and ships carrying heavy fuel oil (normally large passenger ships) are not allowed to enter Antarctic waters. The number of cruise vessels at any one site in the Antarctic has been limited to 40, and only one ship is allowed to land at each site at once. In addition to this, no waste or litter is to be left at the tourist sites, tourists are not allowed to walk on the lichens or moss and no tourist is allowed to go within 5 metres of an animal. All tour guides are officially trained and are experienced scientific personnel who have been involved in research in Antarctica. Waste disposal is tightly regulated, with prohibitions of the dumping of waste anywhere in the Antarctic continent, with ships now having purpose-built waste containment facilities. This shows how sustainable tourism in Antarctica is a high priority, and how there are many measures taken to minimise the negative impacts of tourism. Although these measures are effective now, it is unknown whether they will stay in place in the future, and if Antarctica will retain its title as the ‘World’s last true wilderness’ for much longer.

Structural Footprint of Minimally Invasive Brain Cannulation

Structural Footprint of Minimally Invasive Brain Cannulation Assessing the Structural Footprint of Minimally Invasive Brain Cannulation on Cerebral White Matter: A Cadaveric DTI Model Abstract Background: Minimally invasive approaches to brain tumors offer the potential of decreased iatrogenic trauma related to tumor visualization compared to conventional approaches. Currently there are no validated models to examine axonal damage after minimally invasive entry into the brain. Object: The authors present and evaluate a cadaveric model of brain cannulation using diffusion tensor imaging fractional anisotropy measurements. Two different methods of access are compared. Methods: Freshly harvested unfixed cadaveric brains were cannulated using both direct and indirect methods. Specimens were subjected to 68-direction DTI scans and proton density imaging. FA data from a â€Å"region of interest† surrounding the entry zone was extracted from scans using imaging software and analyzed. Results: FA values were significantly higher following indirect cannulation (less invasive method) than they were following direct cannulation. FA values for undisturbed brain were significantly higher than in either of the cannulated groups. Conclusion: Axonal damage following brain cannulation can potentially be evaluated by FA analysis in a cadaveric model. Future studies will focus on histologic analysis and clinical validation. Introduction Diffusion tensor imaging (DTI) is a magnetic resonance imaging methodology that can be utilized to visualize neuronal microstructure. Diffusion of water inside the human brain is largely limited by the neurolemma. Since the nerves of the brain travel in large fascicles, this diffusion process can be exploited to visualize white matter tracts using DTI. Furthermore, degree of water flow along these axonal tracts can be quantified by using a measurement called fractional anisotropy (FA). (1-3) FA is a scalar value, calculated from the eigenvalues of the diffusion tensor, which describes the independency of a diffusion process. High FA values indicate diffusion in a uniform direction whereas low FA values indicate more random motion of water. Therefore, lowering of relative FA values within specific white matter tracts has been postulated as a marker of neuronal injury in clinical studies and animal models of stroke, traumatic brain injury, radiation-induced injury, and epilepsy (4-8). Iatrogenic white matter injury from surgical trajectories into the brain can also be quantified using tractographic methods (9, 10). Traditional open approaches to subcortical lesions are difficult to perform without causing significant trauma to the overlying normal tissue. For deep lesions, extensive retraction may be required. Minimally invasive cylindrical brain retractors have been deployed over a dilator device with success in multiple case series (5, 11-14), building on prior work demonstrating feasibility of a microsurgical cylindrical brain retractor (15-17). There are even reports of using minimally invasive approaches for hematoma evacuation18. However, the degree of brain trauma incurred from this method of brain access has yet to be radiographically assessed in human models19. In addition, potentially less invasive techniques, such as inflating a balloon within the brain to create a channel for brain surgery, have not been comparatively assessed (20-22). This study sought to apply diffusion imaging techniques to assess iatrogenic brain injury in a cadaveric model of brain surgery. Rather than test conventional retraction methods of the brain using spatulas and brain dissection, emerging minimally invasive techniques for brain retraction were evaluated. Methods All specimens were procured from the hospital morgue following a protocol internally approved by the department of pathology. Within 6 hours after death, brains were harvested from patients with no known pre-existing neurologic disorders. Specimens were sectioned into two approximately 5cm by 3cm blocks to facilitate cannulation and transport. Cuts were made anteriorly at the level of the anterior genu of the corpus callosum, posteriorly at the level of the precentral sulcus, and along the midline. Lateral areas of cortex were removed to make the blocks symmetrical. Two distinct cannulation techniques were used to access the brain, working sequentially from anterior to posterior for each block (Figure 1A). The â€Å"direct cannulation† technique was performed by passing the cannula plunger through cortex approximately 1 cm posterior to the anterior genu, and allowing the cannula to follow, similar to placement of a guide sheath for working channel neuroendoscopy. 2 cm of undisturbed cortex was maintained between cannulations. Indirect cannulations were performed using a 1.5 cc dilatable fogarty catheter. The balloon segment of the catheter initially punctured the cortex. After this, 1.5cc of air was injected to inflate the balloon. Using the balloon as a guide, the cannula was passed into cortex (Figure 1B). After cannulation, specimens were stored in sealed water filled containers and kept in refrigerated conditions until scanning. Scans were performed within 12 hours of cannulation on a Siemens (Siemens, Erlangen, Germany) 3T Trio system. Scanning protocol included a 68-direction, 30 slice DTI scan with echo/repetition time TE/TR=99/4000ms and voxel size of 1.35 by 1.35 by 2. mm. Fractional anisotropy maps were calculated online, using the scanner software. Additionally, 75 slice proton density scans were acquired with TE/TR=9.8/3000ms and with voxel size of .45 by .45 by .8 mm. After scanning, specimens were kept in storage in 10% formalin. All data were analyzed using OsiriX Imaging Software (http://www.osirix-viewer.com/). FA maps were co-registered to the proton density scans for anatomical accuracy. Two Regions of Interest (ROIs) were drawn as concentric circles centered on the cannula (Figure 1C). The larger circle had a constant radius of .5cm radii around the cannulae. The smaller circle was constructed to cover the area of the cannula. â€Å"Average FA† was recorded for both direct and indirect cannulation for a given slice and both ROIs. The FA of the cannula ROI was subtracted from the FA of the .5cm ROI to obtain the â€Å"Adjusted FA† of the area immediately around the cannula. (Equation 1) A third ROI, constructed to match the radius of the cannula, was placed between the two cannula ROIs in an equidistant fashion. This ROI served as a control, measuring the FA of undisturbed brain. This technique was repeated on a slice-by-slice basis over a depth of 5 slices and the resulting data was averag ed to determine the total FA for a given cannulation. Equation 1 This data was subjected to a paired T-Test using Microsoft Excel. The p value of .05 was prospectively determined to be statistically significant. Results Six specimens were analyzed for FA changes after cannulation using both direct and indirect methods. For each specimen 13 slices of MR data were used for analysis. The mean average FA for direct and indirect cannulation was, respectively, 0.1893 and 0.2956. Average Adjusted FA for direct cannulation varied from 0.0267 to 0.105 with a mean value of 0.0645 while indirect varied from 0.0596 to 0.208 with a mean of 0.137. (Table 1) Analysis of all 78 slices revealed an Adjusted FA range of .0211 to .241 for direct cannulation and .0545 to .611 for indirect. Control FA varied from 0.0648 to 0.2152, with a mean of 0.1576. Not a single slice exhibited direct cannulation FA greater than indirect. Paired 2 tail t-tests were conducted between direct and indirect datasets using both average and adjusted values. All analyses were statistically significant. (Table 2). Discussion Minimally invasive brain retraction systems offer the potential to decrease trauma to normal brain during surgical removal of deep-seated intraparenchymal masses. However, an assessment of the utility of such systems requires an appropriate experimental model that can quantify brain injury incurred via various access routes through the cortex. The investigators have developed such a model, via MRI assessment of cadaveric specimens. Previous research in an animal model has demonstrated that a dilatable balloon retraction system causes less damage to white matter as compared to blunt microsurgical dissection (23). In this particular study, both histological and clinical evidence demonstrated that balloon dilation resulted in less brain injury as compared to standard techniques. In addition, recent research has demonstrated that iatrogenic white matter injury can be quantified following brain surgery using fiber tracking methods (9, 11). The investigators submit that the above imaging method is a relatively simple technique for assessing iatrogenic white matter injury following brain dissection, which can then be correlated with functional outcomes in live patients. The concept of FA correlation to axonal integrity is not new. Many investigators across multiple different disciplines in brain research have used FA as a metric of neuronal injury. (6-8, 24) FA is highest when there is uniformity in a diffusion process such as in intact white matter tracts. It decreased progressively to a theoretical value of zero as diffusion becomes more dimensional. In the case of traumatized axons, damage increases the degrees of freedom of diffusion and thus decreases FA. (25) The use of fresh cadaveric specimens with diffusion tensor imaging has also been previously reported and validated26, 27. Using unpreserved specimens ensures the retention of brain tissue fluidity. Thus, retraction in these specimens directly mimics operative conditions. In addition, cadaveric brains can be imaged easily and accurately, without motion artifact. Many authors have previously used diffusion imaging in postmortem brain tissue to study neuropathologic features of the brain28-30. In fact, Seehaus et al (31) published a histological validation of postmortem DTI. Perhaps most convincing, Budde et al32 published a recent study evaluating blast traumatic brain injury in rats using DTI. In their study, rats were subjected to controlled shockwave exposure. After running post-trauma functional tests the authors sacrificed the rats and performed tractography on the formalin fixed post-mortem brain specimens. The authors found significant differences in FA in multiple cortical regi ons that furthermore correlated to poor functional outcome. For example, a significant decrease in FA was discovered in the hippocampus, which correlated to poor performance on the Morris Water Maze task. In light of this evidence, the authors believe that this model is a reasonable estimation of iatrogenic brain injury following tissue manipulation in cadaveric specimens. However, live imaging in vivo would clearly be superior to a cadaveric model, and is planned for future studies. The data clearly illustrates a general increased fractional anisotropy using the indirect cannulation technique in comparison to the direct cannulation method. Fractional anisotropy is a scalar measurement of the independency of a diffusion process. Higher values indicate more uniform diffusion. In the case of neural tissue, diffusion is largely limited by the cell membrane. Thus, lower FA values indicate compromised neuronal integrity. We believe the statistically significant difference in FA between indirect and direct cannulation is evidence for increased preservation of neural tissue using indirect, balloon-guided cannulation. Generally increased FA values in the control specimens is further evidence of this hypothesis. Conclusion Brain cannulation for minimally invasive access to deep-seated brain tumors is an area of growing interest in neurosurgery. To assess the collateral damage to surrounding neural tissue, validation studies need to be conducted to assess white matter integrity following manipulation. Diffusion imaging provides unique visual and quantitative measurements that can be utilized to answer these critical questions. The application of DTI to assess cannulation techniques is a simple but novel idea. The authors hope that this work facilitates analysis of brain cannulation and retraction technology with the goal of maximum preservation of cerebral white matter. Acknowledgement We would like to thank Dr. Julia Koeffler (UPMC Neuropathology) and Denise Davis (UPMC Radiology) for their assistance on this project.

The Many Themes of A Tale of Two Cities :: Tale Two Cities Essays

The Many Themes of A Tale of Two Cities The Tale of Two Cities has many assorted themes. The themes are interconnected with each other. Theme plays a big part in the plot a book. The opinions formed by the audience, of the characters, are also affected by the themes in a book. Three themes in this book are sacrifice, love and hate, and death; these themes show up many times in this book. The themes in this book are shown through the characters and their actions. Sacrifice shows up in the book many times. Sacrifice is giving up something that is apart of your life that you do not really want to give up. The greatest sacrifice in the book is Carton's death. He sacrifices his life for his love for Lucie Manette. Sydney Carton met his death with great dignity. In fulfilling his old promise to Lucie, Carton attains peace; those watching see "The peacefullest man's face ever beheld"(366) at the guillotine. Charles Darnay gives up his estate in France, for the idea of working in England. His decision to become a teacher put him in a conflict with his uncle, the Marquis St. Evremonde. Miss Pross lost her hearing when she tried to stop Madame Defarge from killing Lucie and her family. Miss Pross was the loyal servant for Lucie. She showed her loving devotion to Lucie by fighting off Madame Defarge. Many characters are skilled with the force of love in this book. Miss Pross, fought off Madame Defarge for the reason that she loved Lucie, and did not want anything to happen to her. The true love was the feelings of Sydney for Lucie. This love was so great he sacrificed his own life for her. He showed more love for her than for himself. Hate is also plays a big part in the book. Madame Defarge had so much hate she went to the extent of trying to kill Lucie. This backfired and instead of Lucie dying she died in a struggle versus Miss Pross. Even Madame Defarge's husband Earnest Defarge shows hate when he accidentally runs over a peasant's son and kills him. Mr. Defarge showed no remorse for what he had done, and instead was very hateful toward the father of

Department of Electrical and Computer Engineering: Final Examination

University of Waterloo Department of Electrical & Computer Engineering E&CE 231 Final Examination – Spring 2000 Aids: Formula Sheets (attached), Scientific Calculator Time Allowed: 3 hours Exam Type: Closed Book Instructor: C. R. Selvakumar Date: August 10, 2000 Max Marks: 100 Instructions: Answer all questions in PART-A and any two questions in full from PART-B. State your assumptions clearly. Be concise, precise and clear in your answers General assumptions to be made when not specified in a question: (a) Assume that the semiconductor is Silicon. (b) Assume that the temperature T = 300K c) Use the data given in the formula sheets where needed. (d) Use the following expressions for the Effective Density of States in the Conduction Band (NC) and in the Valence Band (NV) respectively: 3 2 3 3 3 ? m ? ? T ? 2 ? 3 N C = 2. 5 ? 1019 ? ? cm ? m 0 ? ? 300 ? * n ? m* ? 2 ? T ? 2 p ?3 19 N V = 2. 5 ? 10 ? ? m ? ? 300? cm ? ? 0? PART -A 1a) Consider a Silicon p+-n diode with the foll owing doping densities: NA = 1019 cm-3 and ND is 1016 cm-3. The diode has an area of 100  µm by 20  µm. (i) Without doing any calculations, sketch the capacitance versus reverse voltage (VR) starting from VR = 0. (4 marks) (ii)Calculate the voltage at which you will obtain the minimum capacitance and also determine (calculate) the minimum capacitance at that voltage. (10 marks) (iii) Derive the mathematical relations you use in calculating the quantities in (ii) above. (16 marks) 1b) Assuming that the p+ region and the n-region of the diode described in 1a) above are ‘long’ compared to the minority carrier diffusion lengths in those regions, show how you would obtain the complete Current-Voltage (I-V) Characteristic of the diode. You can assume that there is no recombination in the space-charge layer and you need not solve the continuity equation.Sketch the electron and hole current distributions in the entire device. (10 marks) Page 1 PART B 2a) Draw a clearly labe lled band diagram of an n-p-n transistor under thermal equilibrium and superimpose on it a band diagram of the same transistor when it is under normal forward active mode of operations. (8 marks) 2b) Derive an expression for the common emitter current gain $ ($ = IC/IB), in terms of the doping densities in the different regions, thickness and carrier diffusivities and diffusion lengths. Assume that there is no recombination in the neutral base or in the space-charge layers.Also, assume that the conventional reverse saturation current of the reverse-biased diode, IC0, is negligible. Assume that short-region approximation is valid in the base and that the bandgap narrowing in the emitter is important. No need to solve continuity equations and you can assume the expected carrier distributions. (12 marks) 2c) Obtain the modified Ebers-Moll (EM) equations from the original EM equations given in the formula sheet. Sketch Common-Base output characteristics based on the modified EM equation s and show the Forward Active Region of operation, Saturation Region and Cut-off Region. 10 marks) 3a) A silicon n-p-n transistor has an emitter doping NDE = 1020 cm-3 and a base doping NAB = 1016 cm-3. The emitter is 1  µm thick and assume that the hole diffusion length in the emitter is 0. 1 :m. The base is 0. 35 :m thick and you can use the values of mobilities and lifetimes given in the tables in the formula sheet to determine the electron diffusion length in the base. Verify that the short-region approximation is applicable to the base. Assume that the carrier recombinations in the neutral base an in the emitter-base depletion layer are zero. When this transistor is operating in the normal forward active mode with 0. volts forward bias across the emitter-base junction and a 2 volt reverse bias across the collector-base junction, what is the collector current density (JC) and the base current density (JB) ? You can assume that the depletion layer thicknesses are negligible at both junctions. Assume that bandgap narrowing for the emitter doping is 100 meV and the room temperature is 300K. (15 marks) 3b) What is the emitter efficiency of the transistor in 3a)? (5 marks) 3c) What do you understand by diffusion capacitance of a diode? Show (derive) that the diffusion capacitance of a p+ – n diode is approximately given by C Diffusion ?Qp Vt where Qp is the total injected minority hole charge on the n-side quasi-neutral=region and Vt is the thermal voltage (kT/q). Prove that the quantity Q p ? qAL p pn 0 e V Vt (10 marks) Page 2 4a) Consider an n-channel MOSFET and explain how the MOSFET operates using key band diagrams (along source, channel and drain and vertically along the metal gate, oxide and the channel region) and cross-sectional diagrams. State clearly wherefrom the channel electrons come and explain how this is controlled by the gate voltage. (10 marks) 4b) With reference to an n-p-n transistor, explain what is Early Effect and how it arises. Using an approximate sketch show the Early Voltage. Clearly illustrate your answer with the aid of carrier profiles and common-emitter output characteristics. (10 marks) 4c) Contrast the Temperature-dependence of Avalanche Breakdown Mechanism and Zener breakdown Mechanism. Illustrate your answer with sketches of Reverse bias I-V characteristics giving physical reasons. (10 marks) Page 3 E&CE 231 1/4 Formula Sheet C. R. Selvakumar E&CE 231 Formula Sheet 3 1 4? *2 g c (E) = 3 (2m n ) ( E ? E C )) 2 ; (E ? E c ) h 3 1 4? *2 2 g V (E) = 3 2m p ( E V ? E)) ; (E ? E V ) h 1 f FD (E) = (E-E F )/kT 1+ e p 0 = N V e (E V ? E F )/kT = n i e (Ei ?E F )/kT () n 0 p0 = n 2 i 3/2 ? 2? m* kT ? p N V = 2? ? 2 ? ? ?h ?  µn = q? c,n m* n and  µ p = q? c,p m* p ? max = ? qN A x p0 ? 0? r qN + x n0 D = ?0? r 1/2 x n0 ? 2? r ? 0 V0 ? NA =? ? q N D (N A + N D ) ? ? ? 2? r ? 0 V0 ? ND =? ? q N A (N A + N D ) ? ? 1/2 3/2 ? p 0 + N + = n0 + N A D + ? ?2 ? N D ? NA N + ? NA ? D ? + n2 ? + n0 = i 2 2 ? ? ? ? + ? N D x n0 = N A x p0 x p0 n 0 = N C e (E F ? EC )/ kT = n i e (E F ? E i )/kT ? 2? m* kT ? n N C = 2? ? 2 ?h ? ? kT ? n no p po ? kT ? N + N A ? D V0 = ln? ?= ln? ? q ? n2 ? q ? n2 ? i i p( x n0 ) = pn e qV / kT and ? pn = pn ( e qV / kT ? 1) 1/2 for n ? type , where ? c,n and ? ,p are mean time between collisions ? = qmn n + qm p p and r = 1/s dn ? dp ? ? ? J n = q? n µn ? + Dn ? ; J p = q ? p µ p ? ? D p ? ? ? dx ? dx ? D p Dn kT = = = 0. 0259 V at 300K  µ p  µn q n( ? x p0 ) = n p e qV / kT and ? n p = n p (e qV / kT ? 1) ? p( x n ) = ? pn e or ? p( x n ) = ? pn ( 0) e ? x p / Ln or ? n( x p ) = ? n p ( 0) e ?n( x p ) = ? n p e ? xn / L p ? x p / Ln ? Dn ? Dp ? I = qA? n p0 + p n0 ? (e qV/ kT ? 1) ? Lp ? Ln ? ? ? qN ? C j = A? Si d ? ? 2(V0 ? V ) ? 1/ 2 for p + ? n diffusion capacitance: C s = q 2 AL p kT p n0 e qV/kT for p + ? n n ? type regions of width, W: long base diode approx: I p = qAD p ? pn ( 0 )Lp short base diode approx: I p = qAD p ?p 1 dJ p ?n 1 dJ n =? + G ? Rp; = ? + G ? Rn ?t q dx ?t q dx Wm = L p = D p ? p and Ln = Dn ? n VT = d 2V d? ? ? 2= = where ? = q ( p ? n + N d ? N a ) dx ? 0 ? r dx dV 1 dE c 1 dE v 1 dE t ?= ? = = = dx q dx q dx q dx ? xn / L p 2? Si ( 2? F ) qN a for VG > Vth ? pn ( 0 ) W ? Si = ? 0 ? r ? Qd Qi + 2? F + ? ms ? , Ci Ci Q d = Q B = ? qN a x dm ,x dm = Wm ? Ci = Cox = 0 ox = i t ox d 1 2? ? Z? ? I D =  µ n Ci ? ? ? (VG ? VT )V D ? VD ? ? L? ? 2 ?  µ n Ci ? Z ? 2 I DSat = ? ? (V ? VT ) V Dsat = VG ? VT 2 ? L? G E&CE 231 2/4 Formula Sheet C. R. Selvakumar Eber-Moll Model (n-p-n transistor)I EBO (e VBE / Vt ? 1) â€Å"RIC I CBO (e VBC /Vt ? 1) â€Å"FIE ? VBE ? ? VBC ? I E = ? I ES ? e Vt ? 1? + ? R I CS ? e Vt ? 1? ? ? ? ? ? ? ? ? ? VBE ? ? VBC ? Vt ?e ? + I CS ? e Vt ? 1? I C = ? R I ES ? ? 1? ? ? ? ? ? ? E&CE 231 3/4 Formula Sheet C. R. Selvakumar Mobilities in Silicon N = doping density (cm ? 3 )  µ (N) =  µ min + Carrier type  µ0 N 1+ N ref :min :0 cm2 / (v. s) Nref cm-3 electron 88 1 251. 8 1. 26 x 1017 hole 54. 3 406. 97 2. 35 x 1017 Doping density Mobilities Lifetimes (J) as function of doping density N :n :p 1 1 = + cA N2 ? ? SRH 1015 1016 1017 1018 1019 1020 1322. 3 1218. 2 777. 3 262. 1 114. 1 91. 5 457. 96 437. 87 330. 87 43. 23 68. 77 56. 28 cm 2 v. sec cm 2 v. sec cm ? 3 Doping density N cm-3 Lifetime J sec For both electrons and holes 1015 1016 1017 1018 1019 1020 9. 8 x 10-6 8. 3 x 10-6 3. 3 x 10-6 4. 5 x 10-7 3. 3 x 10-8 8. 3 x 10-10 Obtained using the above formula for lifetime using: JSRH = 10-5/(1 + 5 x 1016/N) and CA = 10-31 cm6s-1 E&CE 231 4/4 Formula Sheet C. R. Selvakumar Properties of Silicon and Gallium Arsenide PROPERTY Si GaAs atoms or molecules/ cm3 5. 0 x 1022 4. 42 x 1022 atomic or molecular weight 28. 08 144. 63 density g/cm3 2. 33 5. 32 breakdown field V/cm 3 x 105 4 x 105 dielectric constant, gr 11. 8 13. 1 effective density of tates: Nc cm-3 Nv cm-3 Physical Constants ?1. 38Ãâ€"10 ? 23 J / K ? k ? ?8. 62Ãâ€"10 ? 5 eV / K ? ? 31 m0 9. 11Ãâ€"10 kg ?0 8. 85Ãâ€"10 ? 14 ? r (Si) 2. 8 x 1019 1. 04 x 1019 4. 7 x 1017 7. 0 x 1018 11. 8 ? r (SiO 2 ) 3. 9 h electron affinity, eV 4. 05 6. 62Ãâ€"10 c 3Ãâ€"10 q 1. 6Ãâ€"10 4. 07 energy gap, eV 1. 12 1. 43 intrinsic carrier conc. , ni cm-3 at T = 300K 1. 5 x 1010 1. 8 x 106 effective mass electrons holes m*n = 1. 1 m0 m*p = 0. 56 m0 m*n = 0. 067 m0 m*p = 0. 48 m0 intrinsic mobility @ 300K electrons cm2/Vs holes cm2/Vs 1350 480 8500 400 diffusivity @300K: electrons cm2/s holes cm2/s 35 12. 5 220 10 F / cm 10 ? 34 J ? s cm / s ? 19 C