The Historical Development of Counselling

1. 1 Explain the historical development of Counselling Counselling and Psychotherapy began in the early 18th century. The shift in how society dealt with mental health issues came about primarily due to the advent of the popularisation of science through the beginning of the industrial revolution. Society became increasingly transient and anonymous and the responsibility for behaviour became from the individual rather than from the community as a whole. In the 1880’s Sigmund Freud developed a theory about the unconscious mind and went on to create psychoanalysis. Many therapists have been influenced by Freud and gone on to develop his theories. Freud collaborated with a number of analysts and set up the Vienna Psychoanalytic society. Notable amongst these is Carl Jung who developed Psychodynamics and focussed on dream analysis. Alfred Adler who’s most famous concept was the inferiority complex and also Otto Rank who was the secretary of the society. B. F Skinner was also influenced by Freud’s work. Skinner rejected the notion of the ‘psyche’ and developed his own theory called ‘radical behaviourism’ which is essentially the science of behaviour. Abraham Maslow developed the theory of a * Hierarchy of Human Needs (1943) Maslow believed that there where a set number of needs which had to be met before the client was able to achieve self actualisation, a term meaning the client reaching their full potential. Carl Rogers was the main proponent of person centred therapy which began in the 1940’s. This approach was Humanistic and saw the client rather than the therapist as the expert of their life. Person centred therapy believes the client holds the answers and has the power of autonomy. The counsellor is there to help facilitate this process by use of the core conditions. This humanistic approach relies less on medical knowledge and training and more on lay analysis. The principles of humanistic medicine are communication, respect and also an emotional connection between counsellor and their client. 1. 2 Explain the philosophical basis of Person Centred Counselling. The basis of the person centred approach is an optimistic outlook of individuals and a belief that people have the ability and inner resources to be able to resolve their own issues and move forward in a positive direction. It believes that all humans are innately social and constructive beings and that we are all motivated to seek the truth. We also directed by our need for self esteem Each individual’s behavior is influenced by how they perceive themselves. We are all trying to develop and be the best that we can be, and this process is guided by internal and external forces. By using the core conditions of Congruence, unconditional positive regard and empathy the counsellor is able to develop a therapeutic relationship with the client. This relationship should be based on equality and the counsellor should provide a safe environment in which the client is empowered to explore their self perception and achieve greater self awareness. This self awareness will enable the client to become secure in their self concept and go on to enable them to fulfill their full potential. 1. 3 Explain the key concept principles of Person Centred Counselling The main principles of Person Centred Counselling include a right to autonomy. No advice or guidance should be given by the counsellor as the client has the ability to self actualise and find their own answers. The ability to discover themselves achieves beneficial long term results as the client will learn how to look at their own feelings and actions in the future and become self sustaining. Rogers demonstrates a 7 Stage process of change to attempt to clarify how the client moves forward during the counselling process. At the beginning of the counselling the client will feel defensive and rigid in their thoughts. The will have poor self-awareness and have trouble recognising feelings. As the therapy continues they will undergo a graduate change encompassing the following stages. * Personal Constructs- Conditions thought of as facts and not open to change. * Internal Dialogue. A fear or avoidance of internal conversations and the client is fearful of ‘thinking too much’. * Expression. Client fearful and uncomfortable in expressing themselves * Differentiation and elaboration of experience. Clients start back seeing things in a very black and white manner with no grey areas. This change during the counselling process. * Perception of problems. Clients start off believing it is other people that have the problem but gradually come to terms with their own issues and no longer fear them. * Attitude to change. The client goes from not believing they can or should change to being open to and even relishing the possibility. * Bodily Changes. The client will have less physical symptoms of unhappiness such a headaches, irritability etc. Their feeling of contentment will manifest themselves and a healthier outlook. It needs to be recognised that every client is individual and there is no guarantee how they will go about the therapeutic process. These stages should only be looked as a guide to some of the steps the client may take. 1. 4 Explain how Person Centred Counselling would inform the practice of a qualified trained counsellor By creating a therapeutic environment in which the client feel safe to be entirely honest and open about their thoughts and feelings we can enable the client to be become self actualised and able to find a way to move forward. In order to create this environment we need to offer the client warmth, respect and a safe place where they can openly explore themselves. This offering of unconditional positive regard will enable the client to feel accepted and understood and this will encourage them to practice full self disclosure without any fear of judgement or rejection. The counsellor needs to be aware of the clients anxiety and able to enter the clients own world and develop and understanding of it. Rogers wrote *‘ It (empathy) means temporarily living in his/her life, moving about in it delicately without making judgements, sensing meanings of which he/she is scarcely aware, but not trying to uncover feelings of which this person is totally unaware, since this would be too threatening. This feeling of empathy with what the client is experiencing and ability demonstrate this understanding to the client will build a reassurance within the client that we have a deep emotional awareness of what they are experiencing. In order to achieve these conditions we firstly need to establish congruence. Rogers states ** ‘personal growth is facil itated when the counsellor is what he is, when the relationship with his client is genuine and without â€Å"front† or â€Å"facade† , openly being the feelings and attitudes which at that moment are flowing in him. The counsellor should be able to be genuine and open with their feelings and understanding and be able to demonstrate this transparency to the client during their relationship. 1. 5 Explain how the chosen model influences the understanding of the development of the self concept. The Organismic self is an internal evaluation system we are all born with. It gives us an innate awareness of how to sustain wants and needs. The organismic self has the following traits. * Spontaneous /creative/fluid * self-perpetuated/ regulated self-directing- Knows how to drive forward to goal * self-maintaining- How to keep safe and well * self-enhancing- Knows what gives pleasure * self-replicating This system is defined by Rogers as the internal locus of evaluation and can be defined in the following way: * How you feel about right/wrong- good/bad- what you want/don’t want * This is an image of the ideal self and how you perceive you should think/act *1980 – p142 **Person to Person â€⠀œ p90 As we mature we interact more with other people and our valuing system begins to change. In order to gain approval and acceptance from people around us we adapt our behaviour. The first example of this will usually be as a child trying to please and parent or guardian and may extend to family, friends, colleagues and society as whole as we get older. We develop a self concept which is how we would like to be perceived by others and is based on what we feel we should be like in order to gain love and acceptance. Rogers defines these changes as the external locus of evaluation and is: * Driven by other individuals/society Creates ideal self what how you perceive you should be * Needs approval from others to gain love an acceptance * Conditions of worth- Acting in a certain way to be loved By living with this self concept we can feel lost and conflicted about who we are. Our sense of worth is based on how we perceive other people to be reacting to us and we can develop a reliance on a need to please others in order to value ourselves. Person centred counselling aims to get the client to recognise their own inner feelings and to re-introduce them to their organismic self. By doing this we can hope to achieve wherein the Organismic self and the Self Concept overlap and we are able to live to our full potential. 1. 6 Explain why it is important to have an understanding of a therapeutic model before using its methods and techniques Unless the therapeutic model is used then a counsellor would be unable to work with the core conditions and may be unable to demonstrate congruence, unconditional positive regard and empathy. All these are vital in order for the client to feel comfortable and able to share their innermost thoughts and feelings. It is vital the counsellor and client have an awareness of professional boundaries and the counsellor has sufficient knowledge and insight to ensure the client is not left in an unsafe position. By ensuring the rules are clearly defined and the beginning of the process through the use of a contract the client will be fully aware of what they can expect from the counselling. For example, the client needs to be made aware they will not be receiving advice and they will be expected to find their own answers. The management of the expectations of the client will prevent them from feeling frustration with the counsellor and also give them a greater insight into the therapeutic process. The counsellor needs a full understanding of all the stages of the process of change in order to move the client forward and have awareness when the counselling has reached its natural conclusion. This will enable to the client to move on and not develop and over reliance on the therapy sessions. By ensuring the above conditions are met the counsellor has a solid base in which to begin the counselling and ensure the client has a positive experience.

Is Western Culture Dominating Indian Culture Essay

Now we are in 21st century ,if we compare the culture which means the way we live,the way we love,the way we give respect to yelders and teachers,the food we eat,the way we dress,etc., of the 20th century I can say that the western culture is not dominating but going to dominate unique Indian culture. Today youth occupy most of the population of our country.Youth contribute to the uniqueness of any nation.Our nation has its uniqueness in its culture through the world.Most of the countries respect our culture. But for a doveloping country like India some of the western principles are necessary to make it dovelprd country.This reason is making our youth attracted to the bad part of western culture such as late night pubs,shorts,western music,etc which is giving them a great intellectual freedom. All these results in this present discussion of Domination of culture. Some of the citizens of the nation are supporting the western culture by saying that without the western culture no country will become developed.I agree with them up to some extent because a country should have to adapt foreign principles up to which the people of nation doesn’t get spoiled bi it. There is a saying of Mahathma Gandhi that â€Å"Open the doors and windows of the house to get fresh air from them to makes us good but not to flew away by heavy wind†. So I can say finally that we should adapt the positive side of the foreign culture which makes us developed and oppose its negative side†¦

Medieval Universities Essay

The English universities were one of the most significant creations of Medieval England. The scholars who attended eitherOxford or Cambridge Universities set an intellectual standard that contrasted markedly with the norm of Medieval England. Oxford University came into being some 20 years before Cambridge University. The church had a major impact at Oxford. The town came within the diocese of Lincoln, yet Oxford had its own archdeaconry. It was the input of the church that led to the first recorded student/university authority clash at Oxford. The universities led to major growth in both Oxford and Cambridge as towns and both became important centres. No-one is quite sure why Oxford was chosen as the town for England’s first university – however, the town had a number of distinct advantages. Oxford was the centre of communications within its region and both royalty and foreign scholars frequently visited the town. There were also many religious houses/centres around the town and the agricultural land was rich and farming did well at this time. Oxford was considered to be in a civilised part of England – it was near to London and getting to Europe was not necessarily a major journey. Oxford also held strategic importance, which led to the building of a castle there. In 1167, a quarrel between Henry II and Thomas Becket led to a temporary ban on English scholars going to study in France. For whatever reason, scholars and academics gathered in Oxford to continue with their work – fifty of them. As journeying to the university in Paris was not allowed, more scholars and academics arrived in Oxford. Sometime after 1167 Giraldus Cambrensis visited Oxford and started teaching there. He taught three times a day. He took poor students for lectures; he then taught academics from different faculties, and lastly he taught knights and the likes. His clientele became larger than the ‘normal’ monastic or cathedral school. In 1180, Prior Philip of St. Frieswade, Oxford, recorded that a scholar had left his family in York to study at Oxford. Within twelve years, the importance of a good education was clearly having an impact. In 1192, Richard of Devizes wrote â€Å"Oxonia vix suos clericos, non dico satiat, sed sustenat.†| Richard was basically stating that there were so many scholars in Oxford that the town could barely feed them. By 1209, it was estimated that there were 3,000 students in Oxford. It was also in 1209 that students in Oxford started to migrate to Cambridge. This occurred after some students killed a woman in Oxford. At this time, King John and Pope Innocent III were quarrelling over a new Archbishop of Canterbury. Innocent put England under an interdict. With such worries, John had few thoughts for students in Oxford. He gave his permission for the execution of three students in Oxford involved in the woman’s death. However, in the delay that took pace, the students fled to Reading, Cambridge of Paris. Others followed to Cambridge and by 1284, Peterhouse College was founded. Unlike the great university of its time – the university in Paris – Oxford was not connected to either a cathedral or a religious house. The Sorbonne was supervised by ecclesiastical men while Oxford was supervised by masters, though these were usually in holy orders. Regardless of this, Oxford developed with a degree of practical independence. By the end of what is considered to be Medieval England, the following colleges had been created at Oxford – University College, Balliol, Merton and Exeter. In Cambridge, Peterhouse College was created. Student life in both towns was to transform Oxford and Cambridge. The lifestyle of the students was to frequently bring both universities into conflict with the church.

Philosophical Analogy Essay Example | Topics and Well Written Essays - 1000 words

Philosophical Analogy - Essay Example While Plato was Aristotle's mentor, Foucault was once Derrida's teacher. Derrida and Foucault are both French philosophers who are part of 20th-Century-Western Philosophy. As would be expected, the latter philosophers would have a considerable amount of study on the works or references of the earlier theorists. Derrida's work Plato's Pharmacy is an attack to Plato's famous work Phaedrus. While Foucault counters Aristotle's "enduring substances" with his claim that everything is "historically contingent". Plato's Phaedrus "is a rich and enigmatic text that treats a range of important philosophical issues, including metaphysics, the philosophy of love, and the relation of language to reality, especially in regard to the practices of rhetoric and writing" (Zuern par. 1). In this particular dialogue, Plato through the character Socrates (with his conversation with Phaedrus) shows explicit criticisms on the art of rhetoric and writing. He argues that rhetoric is not based on truth but that rhetoric practitioners can and will "make small things appear great and great things small", and adds that these people "have discovered how to argue concisely and at infinite length about any subject" and use "words' magic spell" (267). His stance is that, rhetoric is misleading and only aims to be persuasive to achieve its goal in whatever means, without being truthful. It is, as far as he is concerned, only dependent on language and words and not on truth. What Plato favors and promotes is the use of his dialectical method, the method which is "capable of helping itself as well as the (person) who planted it" and "produces a seed from which more discourse grows in the character of others" (277). The idea is that, compared to rhetoric (writing), the dialectical method (speech), can construe clearer definitions by means of producing further discussions, which would validate or not the claim of truth, and thus, would achieve value, with the truth it is affirming and not merely by the rhetoric of writing. This argument is deconstructed by Derrida in his work Plato's Pharmacy, where he centralizes his analogy on Plato's use of the term pharmakon in his works. With that analogy, Derrida highlights the ambiguity of Plato's distinction of the sophist's rhetoric from the philosopher's dialectical method. Derrida questions Plato's preference of "living" speech over "dead" writing. To understand the way Derrida deconstructed Plato's Phaedrus, it is important to go back to the latter's work and analyze the way pharmakon was used. First off though, we have to establish what the term means prior to Plato's context. Pharmakon is "from a Greek word meaning both poison and cure" (Maslin par. 8). Thus, it has a neutral stance, it does not have a negative or a positive connotation attached to it. It can either be a harmful poison or a helpful medicine, making the word ambiguous and would only take its meaning depending on the context of its use. The term is first encountered on Phaedrus, taking on a different form pharmacia. On their way to leave Athens, Phaedrus and Socrates came across the place where it was said that the mythic Oreithuia was taken away by Boreas. Socrates then goes to assume that perhaps "a gust of the North Wind blew (Oreithuia) over the rocks where she was playing with Pharmacia; and once she was killed that way people

Week 2 posts 6340 Assignment Example | Topics and Well Written Essays - 250 words

Week 2 posts 6340 - Assignment Example ver wonder who exactly the target audience is since you have mentioned the employees of McDonalds and also the customers and hence am a bit confused, please clarify about the target group and especially those that will be having free check-up of their blood pressure (Dougherty, 2011). Volunteering is not an easy task and especially when it has to do with teaching patients due to the differences in educational backgrounds and hence what you are doing is really honorable and I encourage you to continue and even recruit other nursing students to follow in that good cause (Scheetz, 2000). I also admire the electronic medical recording as I know how efficient it is and makes easier the work of especially nurses. Cancer is a killer disease and any helping hand extending towards furthering research about it and especially by a profession is highly appreciable. The participation by leadership is truly admirable cause. Kudos and continue with the same spirit to raise more funds not only for cancer but also other killer diseases as well which need more research (Pape, 2000). American Association of Colleges of Nursing. (1999). Defining scholarship for the discipline of nursing. Washington, DC: Author. Retrieved January 16, 2013, from: http://www.aacn.nche.edu/publications/position/defining-scholarship Pape, T. (2000). â€Å"Boyers model of scholarly nursing applied to professional development. Association of Operating Room Nurses.† AORN Journal, 71(5), 995-9, 1001-3. Retrieved from

Propose a New Policy - same bill Essay Example | Topics and Well Written Essays - 250 words

Propose a New Policy - same bill - Essay Example Therefore, in order to reduce this disparity a policy to monitor the nursing staffing standards for patient safety and quality care will be significant. The introduction of this bill will enhance the working conditions of the nurses. This is through protecting them from being overworked or exploted by the employers. On the other hand, the quality of health care delivery will improve significant as the concentration of a nurse towards the patient will improve significantly. This aspect will play a significant role in enhancing the safety of the patients. This is through compelling the healthcare centers to employ adequate number of nursing to serve the patients (Croskerry, 2009). Lastly, through the new bill, the health consumers will improve their trust towards the heathcare centers. The increase in the number of nurses in order to offer high quality care will have significant impact on the cost of health care in the country. This is likely to exclude many low income earners from accessing the services as the healthcare centers are likely to shift the burden of the extra costs to the

Case 1; What else can go wrong Essay Example | Topics and Well Written Essays - 250 words - 1

Case 1; What else can go wrong - Essay Example If Van West could have understood Mexican culture, everything would have been easy. This is because culture dictates the way individuals treat each other, outlines that which is acceptable, the manner in which management is viewed and the way in which people approach their daily work. Since Hernandez has been helpful to Van West, he needs to inform him when it comes to business it is important to focus on your objectives. Therefore, West should transfer him to another department to avoid daily meeting while at work. In Mexican culture, a boss has the role of influencing a faction or group of people towards the attainment of a goal. Bosses are expected to lead by example, so that others are motivated to follow him and not just any individual with a position of influence. In addition, He or she is an individual who is in charge of a certain division of a company. In this case, superior people in the firm are undermining the subordinates a situation that has brewed into a cold relationship between the two groups. In order to address these issues, Van West needs to negotiate with the workers and agree on a different pay package. This will make workers change their mind about striking because they can perceive the move as inclusive and unbiased. In the end, individual relationship will improve since workers will feel safe. They will not have a negative attitude about the hierarchy since it cares about their

Strategic Managemet of Human Resources Essay Example | Topics and Well Written Essays - 2000 words

Strategic Managemet of Human Resources - Essay Example Its mission seeks to propel the organization as the global leader in innovation of the best products and services. In order to realize its full potential, Microsoft employs the best talent and its chairman Bill Gates upholds that talent utilization and innovation are essential if success is to be attained in the globally competitive environment. As such, the corporation adopts flexible and dynamic human resource strategies and policies to ensure it retains its global competitiveness, diversity and inclusion. Microsoft corporation strategic management of human resources Introduction The current business state refers to how the key functions of an organization (Microsoft); including messaging systems are currently attaining or tying to achieve the organization’s business goals. The current business state is the starting point in determining what needs to adjust in order to obtain to the desired business state. In order to propel the business to the desired levels, it is essentia l to understand the business model or models that an enterprise uses. It is also essential to evaluate the current business model and any other model that a corporation plans to implement in the future. Businesses usually look at projects of major impacts like Microsoft’s Exchange Server 2007 infrastructure design project as an opportunity to shift their model or strategy. An enterprise also uses a major project to enhance its position in the industry or change its internal operations. The current state of the Microsoft Corporation in terms of external influences (pestle) Microsoft is making changes to its current business model, embracing radical, inventive and new thinking, assimilating other companies and technologies in its domains. Microsoft is currently pursuing yahoo to enhance its competitive merit in the search business. The corporation has also joined other companies in dominating the market for cloud computing. Cloud computing is a domain that entails a centralized storage and information processing. The shift towards cloud computing could lessen the role of desktop computers and the servers and other equipments run by numerous corporations. The current strategic approach entails diversification through acquisition of complementary businesses that could be future rivals. It also shifts its marketing focus to tangle with Google over the search engine issue. However, Google and yahoo are some of the competitors to the Microsoft’s internet explorer (IE) (Hill & Jones, 2012, p 36). Microsoft is under external influence by the government to do certain activities following a suit by the Europe union. The U.S department of justice ordered that consumers ought to have a choice on what Windows features are obligatory in any fitting of the operating system. Furthermore, Microsoft has to reveal certain facts to third party developers to make software that better fits with Windows. In terms of external business; Microsoft faces a serious threat on its monopolistic practices as other players like the IBM Corporation and the Sun Microsystems seek protection from the European Union. These complementary corporations exert external pressure on Microsoft, which sometimes results in financial costs. For instance, Microsoft was fined $613 million in 2008

The Church's View on Contraception Essay Example | Topics and Well Written Essays - 1000 words

The Church's View on Contraception - Essay Example Based on the Scriptures, particularly in the Book of Genesis 38:8-10, the act of Onan spilling his seed – which is an equivalent of coitus interruptus – was condemned by God and the Jewish law. Based on the ancient Jewish law of fathering children, it was a duty of the brother to perform to his sister-in-law the role of husband if his brother dies. However, Onan changed his mind about fathering a child which was supposed to be his brother’s and thus â€Å"spilled the semen on the ground†¦And what he did was displeasing in the sight of the Lord, and he slew him also† (Brom; Gen. 38:9-10). In Deuteronomy 25:7-10, it is stated that the man who does not give children to his sister-in-law in case his brother dies would naturally get punished with public humiliation. However, since God slew Onan, then the spilling of one’s semen – or more loosely, the concept of contraception – is obviously a more serious moral offense that simply not g iving one’s brother’s widow a child. Other books of the Bible also condemn contraception. In the New Testament, Paul’s Epistle to the Romans states, â€Å"God has given them over to shameful passions. ... These writings were after all based on the principles of the Bible and the natural law. Onanism, or the act of Onan spilling his semen, was echoed by several church fathers during the early years of the Church. One of the most prominent Church Fathers who condemned contraception in this way was Clement of Alexandria, who, in 195 AD, wrote in The Instructor of Children 2:10:91:2, â€Å"Because of its divine institution for the propagation of man, the seed is not to be vainly ejaculated, nor is it to be damaged, nor is it to be wasted† (Brom). Although the aforementioned statement of Clement of Alexandria somehow includes even acts like masturbation, it is still clear that the Church condemns contraception in whatever form that it can be carried out. The Protestant Reformer Martin Luther also expressed condemnation against onanism and referred to it as â€Å"the exceedingly foul deed of Onan† and that Onan â€Å"deserved to be killed by God† (Brom). Luther, therefo re, emphasizes, through Onan’s example, that the sinner deserves God’s punishment. John Calvin of the Calvinist Church echoed Luther’s condemnation by saying that the intentional spilling of semen is â€Å"a monstrous thing† (Brom). Moreover, John Wesley, founder of the Methodist Church, stated that onanism was â€Å"very displeasing to God† and was tantamount to the destruction of the soul (Brom). Contraceptives and methods to tighten the reproductive system have also long been condemned by the ancient Christian Church. Another Church Father in the name of Hippolytus of Rome indicated in his Refutation of All Heresies 9:12, in 255 AD, that â€Å"the so-called faithful [should not] use drugs of sterility or bid themselves tightly in order to expel a fetus which

Government 2 Dissertation Example | Topics and Well Written Essays - 500 words - 4

Government 2 - Dissertation Example 2.) If universal health-care access becomes a reality, what will happen to hospital emergency rooms? During the 2009 US elections, Presidential Candidate Obama offered the idea of amending the healthcare coverage of the country. This proposal was intended for the creation of a health insurance exchange, which would set up a government-backed insurance system in competition with private health insurance companies. However, numerous concerned politicians debated on this topic. Republicans, on one hand, believe that implementing Obama’s suggestion would lead to an increase in government expenditures by almost $2 trillion, an overwhelming tax burden to the American citizens. Worse, it does not take any serious steps to reduce costs for the health care system. Most Democrats argued that the country is ready to apply the universal health-care, which would guarantee the poverty-stricken Americans an outright health insurance. As of 2011, the US ranks 3rd in terms of population. Promu lgating Obama’s plan would lead to a decrease in mortality rate and inflation in the number of hospital patients, possibly resulting to crowded emergency rooms.

Stakeholders And Commercial Viability Versus Sustainability Assignment

Stakeholders And Commercial Viability Versus Sustainability - Assignment Example At present, obtaining a house through a housing loan is not a popular solution in Saudi Arabia because interest rates are too high and the banks themselves are not keen on extending them considering the absence of specific laws that will protect them in cases of defaults. That will change very soon with the passage of the mortgage law. But what makes the Al Qasr Project more than a bright prospect is the fact there is a sure market of housing in the Kingdom, particularly in Riyadh, because of the rising population, mostly young, and the present housing shortfall. Nevertheless, all stakeholders play vital roles in ensuring that the Al Qasr Project will both be commercially viable and also sustainable. The Al Qasr Project is a mixed-use development complex located in the Al-Suwaidi or Alsweidi suburbs, in Riyadh, Saudi Arabia and is owned and developed by the Dar Al Arkan Real Estate Development Company (About Al Qasr 2010). The Project, whose construction began in 2005, have completed most of its infrastructure and superstructure, which include pavements, lanes, lighting and treeing, irrigation and sewage networks, and telephone and security lines. Other services schemes such as gardens, parks, commercial centres, and governmental administrative building to serve the area and its future inhabitants are also in the pipeline. The Project applies the suburban centre concept, where residential and commercial units are integrated in one area creating a self-contained centre, under the framework of the comprehensive development philosophy, which entails the accommodation of the medium income group (Al Qasr 2010). Standing on an area of 816,000 sqm, more or less, the Al Qasr Project consists of 3,303 units of residential villas, apartments, commercial and low-rise office buildings and is expected to accommodate a total of 13,000

Jung vs Freud Essay Example for Free

Jung vs Freud Essay Sigmund Freud was known as a medical doctor, psychologist and one of the most influential thinkers of the twentieth century. His ideas attracted Carl Jung to come under the teachings of Freud. As time grew on, Jung began to reject some of Freud’s original ideas. The two share some central ideas, but the differences between them are recognizable. The religion, unconscious complex, and the therapist practices is the biggest distinction between the two scholars. Freud’s dream is retrospective, meaning that it mainly deals with past events from childhood usually sexual ideas, while Jung’s dreams were more prospective, showing what the dreamer can grow into. Freuds’s dreams usually were regarded as a manifestation of the repressed sexual urges of the unconscious. As Freud cited â€Å"Many men dream of having sexual relations with their mothers and speak of the fact with indignation and astonishment. †(pg. 475) For example, if a patient dreamt about a long object, Freud would most likely say that it represents the phallus and ultimately sex, while Jung may say that it has nothing to do with the desire to have sex at all but rather the phallic object could refer to strength or fertility. This is where Jung and Freud had their greatest difference. Jung didn’t believe that everything was based so much on sexuality while Freud did. Jung cited â€Å"The dreams are obviously reiterating the conscious standpoint minus the conscious criticism. †(pg. 491) However, this disconnect is not surprising as ultimately, all of Freud’s students and most of his fellow peers didn’t agree with his strong emphasis on sexuality ruling everything. Jung and Freud especially differ in that Jung makes humans seem like beings that can advance and grow together, while Freud makes human seem largely like barbaric beings whose only/main motivation is sex. Even though Jung and Freud had there differences, they still had the same central idea of philosophies and mind process. It was a plus for mankind that Jung began to explore the world and create ideas for himself rather than just listening to the teachings of Freud. Jung offered new thought process for people to agree on rather than everyone just following the masses.

Gain Enhancement of Multiband Microstrip Radiating Structure

Gain Enhancement of Multiband Microstrip Radiating Structure Gain Enhancement of Multiband Microstrip Radiating Structure using Curve Tooth CSRR with Two Different Substrate Material Muktesh P. Shah1, Shobhit K. Patel2, Mayank A. Ardeshana3, Jigar M. Patel4 Abstract—In this paper Microstrip radiating structure with Complementary Split Ring Resonator (CSRR) using Curve Tooth with two different substrate material for Multiband applications in S band and C band is designed and analyzed. We have introduced Curve Tooth in CSRR to improve Gain in comparison with simple CSRR based design. Also, The same design with two different substrate material like FR4 and Teflon is compared and analyzed. Here, Patch of dimension 44Ãâ€"44mm2 is analyzed. The FR4 based design of Curve Tooth in CSRR has five working bands centered around 1580 MHz, 3180 MHz, 3600 MHz, 4580 MHz, 7190 MHz and Simple CSRR Design has three working bands with center frequency 1560 MHz, 3150 MHz and 3540MHz. The Teflon based design of Curve Tooth in CSRR has five working bands centered around 2250 MHz, 4560 MHz, 5150 MHz, 6540 MHz, 8310 MHz and Simple CSRR Design has four working bands with center frequency 2213 MHz, 4508 MHz, 5050MHz and 6395 MHz. Design results of VSWR, R eturn loss S11 and Total Gain of all four design is shown and compared in this paper. Also, Design results shows improvement in Gain in Curve Tooth CSRR design. The dimensions of substrate height is 1.57 mm, Patch and Ground height is 0.035 mm which are similar to actual Antenna dimensions. Design results are obtained by a HFSS 13 (High Frequency Structure Simulator) which is mostly used for simulating microwave passive components. Index Terms— Curve Tooth, CSRR (Complementary Split Ring Resonator), Substrate Materials, Multiband, Microstrip. I. Introduction Nowadays, Multiband antenna is a popular choice because same antenna can be used for many applications [12][15][17][18][19]. Microstrip patch antennas are widely used because of their many merits, such as the low volume, light weight, low cost etc. [1-8] However, Patch antennas have a main disadvantage: narrow bandwidth while others are low gain, low power handling capacity etc. [1-8] Still there is a need to design Multiband antenna with improvement in Gain. Metamaterial may solve this need. In Recent Scenario, Microstrip patch antennas are widely used in wireless devices and other compact sizes with multiband antenna operation. The irregular shape of the developed planar antenna achieves multi-band (Broadband) performance [11]. In traditional planar antennas, the distances between the edges are fixed and therefore, the antennas dominant mode resonates only at a single frequency [11]. In contrast, the irregular shape of the current antenna facilitates, its broadband character by allowing the structure to have more than one degenerate mode that resonate at more than one frequency, based on the irregularity introduced [11]. In general, multi-sided patches are excellent candidates for broadband operation, since many closely spaced resonant modes can be excited using the different edges of the patches [11]. This property makes them uniquely suited for multi-band operation in wireless applications. There has been a considerable amount of recent interest in the class of artificial material which is known as Metamaterials that possess simultaneously negative permeability and permittivity, according to a negative index of refraction [1][2]. Such type of metamaterial is known as a double negative material (DNG). To increase the power radiated from electrically small antennas, an application of DNGs has been suggested by Ziolkowski and Kipple [3]. But in this paper a negative permittivity material complementary split ring resonator (CSRR) which is a dual counterpart of split ring resonator (SRR) originally proposed by Pendry have been loaded into the patch. CSRR is composed of two concentric metallic ring slots with slits etched in each ring at its opposite sides. Apart from double negative materials, single negative materials where only one of the material parameters has a negative real value also possess interesting properties and can be used to produce novel devices. In particula r the complementary split ring resonator (CSRR) which establishes a negative-permittivity at resonance, is an example of a single negative media (SNG) that can be used to make microwave devices [4]-[6]. Here, we have incorporated curve tooth CSRR to further improve the results of CSRR. The properties of SNG can also be manipulated to increase filter shape factor, improve filter rejection and can also applied to antennas to reduce the spurious effect and increase antenna gain and antenna size reduction [7][9][16][17]. This paper is based on the microstrip radiating structure which integrates a Curve Tooth CSRR design into the ground to provide good return loss and improved gain. The CSRR is a commonly used resonator etched on the Metal plane. An effective negative permittivity and negative permeability could be introduced in microstrip devices by loading CSRR [17][18]. In this article, we have etched the CSRR in the ground plane of a microstrip patch underneath the substrate. The CSRR structure model is shown in Figure 1. If the effects of the metal thickness and losses, as well as those of the dielectric substrate are ignored, a perfectly dual behavior is expected for the complementary screen of the SRR. Thus, whereas the SRR can be mainly considered as a resonant magnetic dipole that can be excited by an axial magnetic field, the CSRR (Fig. 1) in essence behaves as an electric dipole (with the same frequency of resonance) that can be excited by an axial electric field. Fig. 1 shows the unit cell structure of SRR model and CSRR model with its equivalent electrical circuit. Fig. 1 (a) SRR unit cell, (b) Equivalent electric circuit of SRR unit cell, (c) CSRR unit cell, and (d) equivalent electric circuit of CSRR unit cell. [15] II. Design and Simulation In this section, we will introduce the design of our antenna. First the conventional patch length and width is designed. After designing the patch, we have taken out five slots from the patch to improve the radiation path. Basic length and width is designed with the use of following equations [5]. Width of the patch can be designed using the equation (1), here f0 is the resonance frequency, ÃŽ µr is relative permittivity of the dielectric substrate and c is speed of light. Length of the patch can be designed by using the equations (2-5) [5]. Here‘t’ is the thickness of substrate. Using these equations we have derived length and width of conventional patch. We designed square patch so length and width are same and it is 44 mm, so a square patch is 44Ãâ€"44 mm2 over here which is shown in Figure 2 (a). We have taken out five slots from the patch to increase the Radiation path and to improve the results as shown in figure. The slots taken out have dimension of 8Ãâ€"8 mm2. A. Design 1 The top view of the Simple CSRR design and Curve tooth with CSRR Design is shown in Figure 2 (a) and 2 (b) respectively. Both the design has outer and inner ring is of 1 mm. Gap between the two rings is 1.5 mm. Table: 1 Material used for Design1 Design 1 Material Patch Copper Substrate Teflon with ÃŽ µ = 2.1 Table 1 shows details about the material. Patch is of copper material. Substrate is of Teflon material with ÃŽ µ = 2.1. The base material is also of copper. Fig. 2 (a) HFSS Model of Simple CSRR Design Fig.2 (b) HFSS Model of Curve Tooth CSRR Design For simulation we used HFSS 13 (High Frequency Structure Simulator) of Ansoft, which is very good simulator for simulating microwave passive components specially RF antenna. Figure 3 (a) and 3 (b) shows the Return Loss (S11) in dB for both the designs. The minimum return loss which we are getting for Simple CSRR design is -31 dB for the band centered around 4.508 GHz and for Curve Tooth CSRR design, it is -37 dB for the band centered around 4.56 GHz. Figure 4 (a) and 4 (b) shows the VSWR plot for both the designs. Fig. 3 (a) Return Loss (S11) plot of Simple CSRR Design Fig. 3 (b) Return Loss (S11) plot of Curve Tooth CSRR Design Fig. 4 (a) VSWR plot of Simple CSRR Design Fig. 4 (b) VSWR plot of Curve Tooth CSRR Design B. Design 2 Here, We have used same design but only substrate material is changed. In this Design we have used FR4 epoxy material for substrate. Table: 2 Material used for Design1 Design 1 Material Patch Copper Substrate FR4 epoxy with ÃŽ µ=4.4 Fig. 5 (a) Return Loss (S11) plot of Simple CSRR Design Fig. 5 (b) Return Loss (S11) plot of Curve Tooth CSRR Design Fig. 6 (a) VSWR plot of Simple CSRR Design Fig. 6 (b) VSWR plot of Curve Tooth CSRR Design Figure 5(a) and 5(b) shows Return loss plot of both CSRR and Curve Tooth CSRR design. Figure 6(a) and 6(b) shows VSWR plot for both the design. III. Comparative Analysis A. Design 1 In this design, we used Teflon as a substrate material in which Curve Tooth design has five working bands while Simple CSRR design has four working bands. Table 3 shows comparison of Return loss and VSWR of the both the design. Table 3 : Comparison of S11 and VSWR for both design Band Design Frequency in GHz Minimum Return Loss (S11) in dB VSWR First CSRR 2.213 -18.8 1.2601 Curve tooth CSRR 2.25 -17 1.331 Second CSRR 4.508 -31 1.0549 Curve tooth CSRR 4.56 -37.6 1.0268 Third CSRR 5.05 -15 1.4183 Curve tooth CSRR 5.15 -14.8 1.4434 Fourth CSRR 6.395 -27.7 1.0862 Curve tooth CSRR 6.54 -24.7 1.1243 Fifth CSRR Curve tooth CSRR 8.31 -12 1.6624 By using curve tooth in CSRR, we have an extra working band and also return loss and VSWR values are very good. We got VSWR of 1.0268 using curve tooth which is nearer to 1. Figure 7(a) and 7(b) shows Total Gain plot in 3D view for CSRR and Curve tooth CSRR design respectively. Fig.7 (a) Total Gain plot in 3D view for simple CSRR design Fig.7 (b) Total Gain plot in 3D view for Curve Tooth CSRR design Simple CSRR design has Total Gain of 2.6609 dB while Curve Tooth CSRR design has Total Gain of 2.9264dB. So using Curve tooth in CSRR we have improved gain. B. Design 2 In this design, we used FR4 epoxy as a substrate material in which Curve Tooth design has five working bands while Simple CSRR design has four working bands. Table 3 shows comparison of Return loss and VSWR of the both the design. By using curve tooth in CSRR, we have two extra working bands and also return loss and VSWR values are very good. We got VSWR of 1.0931 using curve tooth which is nearer to 1. Figure 8(a) and 8(b) shows Total Gain plot in 3D view for CSRR and Curve tooth CSRR design respectively. Simple CSRR design has Total Gain of -0.2895 dB while Curve Tooth CSRR design has Total Gain of 3.0368dB. So using Curve tooth in CSRR we have sufficiently increased the gain. Band Design Frequency in GHz Minimum Return Loss (S11) in dB VSWR First CSRR 1.56 -23.6 1.1407 Curve tooth CSRR 1.58 -27 1.0931 Second CSRR 3.15 -18 1.2780 Curve tooth CSRR 3.18 -19 1.2429 Third CSRR 3.54 -25 1.1197 Curve tooth CSRR 3.60 -24 1.1318 Fourth CSRR Curve tooth CSRR 4.58 -13.9 1.5070 Fifth CSRR Curve tooth CSRR 7.19 -17 1.3172 Table 4 : Comparison of S11 and VSWR for both design Fig.8 (a) Total Gain plot in 3D view for simple CSRR design Fig.8 (b) Total Gain plot in 3D view for Curve Tooth CSRR design IV. Conclusion Here Microstrip patch antenna is designed for multiband applications using five rectangular square slots in the Patch and CSRR in ground. Curve Tooth is also implemented in CSRR to improve the results. Two designs with different substrate material is designed and analyzed. This antenna is compared with simple CSRR design. The result of Design 1 which has Teflon substrate, indicates the five working bands for Curve Tooth CSRR design, 2.25 GHz, 4.56 GHz, 5.15 GHz, 6.54 GHz and 8.31 GHz so the antenna can used for S and C Band Applications while Simple CSRR has four working bands. VSWR is very good for 4.56 GHz frequency which is 1.0268 near to 1. Also, Gain has been improved with Curve Tooth CSRR which is 2.9264 dB compare to Simple CSRR design which has gain of 2.6609 dB. Design 2 which has FR4 substrate, provides five working bands for Curve Tooth CSRR while CSRR design has three working bands. Also, Gain for Curve Tooth CSRR has 3.0368 dB compare to -0.2895 dB for simple CSRR design . So, by using Curve Tooth in CSRR improves results. Also, Dimensions of all Designs are similar to Actual Antenna so when we fabricate the antenna, we will get similar results. References V.G. Vesalago, â€Å"The Electrodynamics of Substances with Simultaneously Negative Values of Permittivity and Permeability†, Sov. Phys. USPEKHI, pp. 509-514, 1968. D.R. Smith, W.J. Padilla, D.C. Vier, S.C. Nemat-Nasser, and S. Schultz, â€Å"Composite Medium with Simultaneously Negative Permeability and Permittivity†, Phys. Rev. Lett., 84, No. 10, pp. 4184-4187, 2000. R.W. Ziolkowski and A.D. Kipple, â€Å"Application of Double Negative Materials to Increase the Power Radiated by Electrically Small Antennas†, IEEE Transactions on Antennas and Propagation, 51, No. 10, pp. 2626-2640, October 2003. F. Falcone, T. Lopetegi, J.D. Baena, R. Marques, F. Martin, and M. Sorolla, â€Å"Negative- E Stop-Band Microstrip Lines Based on Complementary Split-Ring Resonators†, IEEE Microw. Wireless Compon. Lett, 14, No. 6, pp. 280-282, Jun. 2004. J. D. Baena, J. Bonache, F. Martin, R. Marques, F. Falcone, et.al., â€Å"Equivalent-Circuit Models for Split Ring Resonators Coupled to Planar Transmission Lines, â€Å"IEEE Trans. Microw. Theory Tech, 53, No. 4, pp. 1451-1461, Apr. 2005. J. Garcia-Garcia, , F. Martin, F. Falcone, J. Bonache, J.D. Beano, et.al, â€Å"Microwave Filters with Improved Stop Band Based on Sub Wavelength Resonators† IEEE Trans. Microw. Theory Tech, 53, No. 6, pp. 1997-2006, June. 2005. J.J. Max, Y. Cao and T. Liu, â€Å"Design the Size Reduction Patch Antenna Based on Complementary Split Ring Resonator, â€Å"ICMMT 2010 proceedings. Hui Zhang, You-Quan Li, Xi Chen, Yun-Qi Fu, and Nai-Chang Yuan, â€Å" Design of Circular Polarization Microstrip Patch Antenna using Complementary Split Ring Resonator†, 978-1-4244-2609-6, IEEE 2008. D. Laila, R. Sujith, V. Deepu, C.K., Vasudevan Aanandan and P. Mohanan, â€Å"Compact Csrr Based Patch Antenna for Wireless Applications†, 978-1-4244-4819-7, IEEE 2009. N. Ortiz, F. Falcone, M. Sorolla, â€Å"Dual Band Patch Antenna Based on Complementary Split Ring Resonator†, 978-1-4244-2802-1, IEEE 2009. Zygmond Turski, Aly E. Fathy, David McGee, Gary Ayers, and Sridhar Kanamaluru, â€Å"Compact Multi-Band Planar Antenna for Mobile Wireless Terminals,† IEEE, 2001. M.P.Shah, S. K. Patel, M.A.Ardeshana, J.M. Patel, â€Å"Design of Multiband microstrip Radiating Structure for C band Applications,† IJARCCE, Vol.2, Issue.12, Dec 2013, pp. 4560-4563. S. K. Patel, J. Bhalani, Y.P. Kosta, S.S. Patel, â€Å"Design of microstrip meandered patch antenna for mobile communication,† Proceedings of International conference on Advances in Information Technology and Mobile Communication (AIM 2011), Springer, 2011, pp. 184–189. S.K. Patel and Y.P. Kosta, â€Å"E-shape microstrip patch antenna design for GPS application,† Proceeding of Nirma University International conference on Engineering (NUiCONE 2011). IEEE, 2011, p. 1-4. S.K. Patel and Y.P. Kosta, â€Å"Meandered multiband metamaterial square microstrip patch antenna design,† Waves in Random and Complex Media, in press, 2012(DOI: 10.1080/ 17455030.2012.723837). S.K. Patel and Y.P. Kosta, â€Å"Size reduction in Microstrip based radiating structure with artificial substrate,† International Journal of Applied Electromagnetics and Mechanics, in press, 2012. S.K. Patel and Y P Kosta, â€Å"Investigation on radiation improvement of corner truncated triband square microstrip patch antenna with double negative material,† Journal of Electromagnetic Waves and Applications, 2013, Vol. 27, No. 7, 819–833. S.K. Patel and Y P Kosta, â€Å"Triband microstrip–based radiating structure design using Split ring resonator and complementary split ring resonator,† Microwave And Optical Technology Letters / Vol. 55, No. 9, September 2013, Wiley periodicals. J. M. Patel, S. K. Patel and F. N. Thakkar, â€Å"Defected Ground Structure Multiband Microstrip Patch Antenna using Complementary Split Ring Resonator,† IJETEE, Vol. 3, Issue. 2, May 2013. S.K. Patel and Y.P. Kosta, â€Å"Design of Truncated microstrip radiating structure loaded by SRR,† International Journal of Applied Electromagnetics and Mechanics, in press, 2012. S.K. Patel and Y.P. Kosta, â€Å"Dual band parasitic metamaterial square microstrip patch antenna design,† International Journal of Ultra Wideband Communications Systems 2, no. 4, pp. 225-232 2012. J. M. Patel, S. K. Patel and F. N. Thakkar, â€Å"Comparative analysis of S-shaped Multiband Microstrip patch antenna,† IJAREEIE, Vol. 2, Issue. 7, July 2013. J. M. Patel, S. K. Patel and F. N. Thakkar, â€Å"Design of S-shaped Multiband microstrip patch antenna,† NUiCONE, IEEE, 2012.

The Importance Of Flood Inundation Modeling Environmental Sciences Essay

The Importance Of Flood Inundation Modeling Environmental Sciences Essay In recent years, flood inundation models become important increasingly in both flood forecasting and damage estimation as it provides the basis for the decision making of flood risk management. Such models are mainly used to simulate flood inundation extent and depths at different sections of the studied flood rivers. With their help, hydrologists are able to study and analyse the hydrologic systems of floods well. This project was initiated to further understand the flood model Lisflood-FP global climate change and predict the future intensity of precipitation and temperature in Singapore. This will allow engineers and other professionals to gauge the intensity of the future weather and conduct necessary works to prevent unwanted event like flooding, from happening. Background Floods are the most destructive and recurring natural disasters all over the world and a wide range of the world population and their property is at the risk of flooding. Thus, one of the crucial tasks in quantifying the damage estimation of the flood events is that determining the reliable prediction of potential extent and water depth of flood inundation. In General, flood inundation predications are used to service the decision-making in design urban planning in future. The principle of predication are derived from single realisation of numerical hydraulic models and applied on a forward-modeling framework (BatesandDe Roo, 2000). Despite calibration studies are underway to determine a single parameter set that optimises the model fit to some observed data, the confidence level of the predicted results becomes a major problem for decision makers. If the uncertainty is considered in terms of input parameters (e.g. geographical information, hydrological data, hydraulics parameters, and boundary conditions), only a small portion of a typical issue might be regarded as certain or deterministic. The rest inevitably contains uncertainty that arises from the complexity of the system, lack of knowledge or human-induced errors. In previous studies, the uncertainty sources associated with the flood inundation modeling have been generalised into three categories, such as input data, hydraulics parameters and model structures (Bales and Wagner, 2009). Different uncertainty techniques (e.g. Generalized Likelihood Uncertainty Estimation) have been applied into the flood inundation modelling to assess the uncertainty derived from one or multiple factors. However, limited studies have been further discussed the sensitivity of uncertainty sources like roughness coefficients. Moreover, the uncertainty analysis methods applied in previous studies relied heal Objective and Scope This report is a write up on the research of Final Year Project, Flood Inundation Modeling under stochastic uncertainty, had been carried on by the author for the last 10 months. The objective of this project is to systematically study and analyse the impact or effects of uncertainties associated with parameter of roughness coefficient in flood inundation modeling, which is Lisflood-FP Modeling. The predicted data can be used for the predication of future flood inundation and damage estimation under risk analysis. In this report, the following preliminary study works will be covered. To review the one-dimensional (1-D) and two-dimensional (2-D) hydraulic models for flood inundation modeling, and to review the uncertainty sources associated with the flood inundation modeling process and the available uncertainty analysis methods. To conduct a Monte Carlo simulation to assess the propagation of uncertainty associated with roughness coefficients to the results of flood inundation modeling, in terms of water depths and inundation extent. The scope of this project includes a comprehensive literature review on flood inundation modeling process and recognition of the uncertainty effects from various sources. On the basis of literature review, the impact of the uncertainty of roughness coefficients is to be analysed a hypothetical study case. A conclusion will be made according to the preliminary data analysis and the ideas for futures work will be shaped. Methodology (GLUE) Annual reports of companies and information from public domain were reviewed extensively to identify current GHG emissions reduction measures that are adopted by shipping companies. Academic research papers and reports from agencies such as IMO, DNV and World Shipping Council (WSC) were examined to gather information on the potential and effectiveness of the measures and to identify critical issues. Primary research was conducted through a two-pronged approach of surveys and interviews. Survey questions were designed in accordance to the objective of this study and the questionnaires were posted to container liner shipping companies, both with and without offices in Singapore. A small number of survey responses were anticipated and therefore the surveys were used to capture ground information. The interviews with governmental agency, classification societies and selected shipping companies serve as the second pillar of the primary information collection in this study. Report Structure Figure 1. Report structureThis report includes 5 chapters as shown in Error: Reference source not found. A list of abbreviations and a glossary are also included. This report consists of 6 chapters shown in Figure 1.1. Chapter 1 is a brief introduction of background and scope of this study. Chapter 2 reviews the hydraulic models used for flood inundation modeling, the associated uncertainty sources and the uncertainty analysis methods. In Chapter 3, a 2-D hydraulic model is established for a study case adapted from a real world river system, where the model configuration and simulation results are introduced. Chapter 4 and Chapter 5 discuss the effects of the uncertainty of the roughness coefficients on flood inundation modeling. In Chapter 6, a summary is made and the ideas for future studies are presented. CHAPTER 2 LITERATURE REVIEWS The information acquired through various literature reviews are discussed in this chapter to understand the background of floods and flood hazards, as well as the importance of flood inundation modeling. On the other hand, the 1-D/2-D hydrodynamic models for simulating both channel and floodplain flows were reviewed respectively. Subsequently, an overview of this chapter is provided. 2.1 Introduction 2.1.1 Floods Throughout the long human history, floods are the most frequently occurring natural hydrological phenomena, which consist of the futures such as water depth, flow velocity, and temporal and spatial dynamics. The regular-magnitude floods occur every year at the expected stream flow range. It is beneficial to provide fertilise soil with nutrients, transport large quantities of sediment and deposit on the floodplain, and clean-up a river with any stagnant contaminates. However, some floods become disasters due to the extreme events, which happen suddenly without any warning, such as storm, dam break, storm surge and tsunami. As a result, their significant impacts cause imponderable damage on human society and ecosystems, particularly in terms of life loss and property damage. Flood can be defined as water body rises to overflow the lands where is not normally submerged with the perspective of flooding wave advancement (Ward, 1978). This definition includes two main flood types, namely river floods and costal floods. River floods are mostly arising from excessively or long-drawn-out rainfall, thus the river discharge flow exceeding the stream channels capacity and overtopping the banks and embankments. Especially in urban area, floods may also take place at the sewage drains when the heavy storms water surcharged in and overflow the drains. In addition, some natural or man-induced catastrophe could result in the water level is risen up suddenly and then overflow the river bank or dam. The reasons why the costal floods appear are usually originated from the severe cyclonic weather systems in terms of a combination of high tides, elevated sea level and storm surges with large waves. The inundation at coastal areas may results from the overflowing as the water level exceeds the crest level of defense, or from the overtopping as the waves run up and break over the defense, or defense structure failure itself (Reeve and Burgess, 1994). Furthermore, tsunami can cause long ocean waves due to the great earthquake and resulting in coastal floods. 2.1.2 The flood hazard Flood hazard is defined that those floods generate pop-up threats to the life and properties of human beings at the flood-prone areas where man had encroached into. The hazard level is validated by a combination of physical exposure and human vulnerability to the flood inundation process. Floods have been regarded as the top of the most destructive hazards from everlasting. In China, floods account for about 1/3 of all the natural catastrophes and responsible for 30% of the overall economic losses (Cheng, 2009). Furthermore, some south-east Asian countries are flood-prone areas, such as Indonesia, Thailand, and Myanmar, which are bearing the disasters from the frequent river and coastal floods. In 2004, the mega-quake, which exceeds magnitude of 9.0, induced a series of destructive tsunamis with the highest wave of 30 meters along the coasts bordering the Indian Ocean. There were over 230,000 victims lost their lives in around 14 countries. Hence, Indonesia was the hardest hit, followed by Sri Lanka, India, and Thailand (Paris et al., 2007). Moreover, the tropical cyclone Nargis happened on 2nd May, 2008 attacked the Southwest Coast of Myanmar. There were 24 million people been affected and approximately 50,000 to 100,000 people been killed (Kenneth, 2008). However, flooding is not only the critical issue in Asian, but also in the entire world. In 1927, the United States met the most devastating flooding of the Mississippi River in American history. The levee system was broken out and submerged 27,000 km2. Because of millions of population living along the Mississippi River, it led over 400 million US dollars in loss and 246 human deaths (Barry, 1998). In Europe, Netherlands had affected by the critical river floods in the past years since the most areas are below the sea level. The worst flood disaster happened in 1953 killed 1,835 people, covered almost 200,000 hectares of land, destroyed 3,000 family houses and 200 farms, and drowned 47,000 heads of cattle (Lamb and Knud, 1991). The facts mentioned above proven that the global flooding management is increasingly vital to protect millions of worldwide population from the severe threat. However, because of the high costs and inherent uncertainties, it is impossible and unsustainable to build up the absolute flood protection system, but it can be managed to reduce the hazard to lives and property by the most cost-effective measures. Therefore, flood inundation models become the most useful predictive tools which are used to evaluate and analyse the flood hazards, as well as to improve and mitigate the flood risk management. 2.1.3 The Importance of flood inundation modeling From the perspectives of physical processes and anthropogenic influence, the floodplain is a dynamic flow environment. Since it is much difficult to handle the confliction between maximising benefit-over-cost ratio and minimising the human impact, the application of inundation modeling becomes the most likely moderate approach for flood management strategy. Actually, the final objective of flood inundation studies could be minimise susceptibility and vulnerability to loss in both economy and human lives aspects (Parker, 1995). Therefore, it is necessary to use flood inundation models to simulate and predict the possible impacts of floodplain development. The principle of flood inundation models is to allow the upstream flood flow to discharge directly to the downstream flood extent. Those models become much valuable and helpful flood predictive tools which are able to apply in different real and virtual scenarios for analysis. In comparison with those traditional statistical models, which are according to all the numeral data observations of past flood events, the largest advantages of physically-based inundation models are their capability of spatial and temporal variables in terms of discharge, water level, velocity, flow duration and inundation extent, on the processive flood events. Meanwhile, they also support the hydro-system operation, flood warning, risk quantification and decision making for the design and planning of flood mitigation measures. Besides, the flood risk maps are able to be determined on the basis of the flood inundation modeling results. They are static two-dimensional maps indicating the flood probability with flood depth and extents, which is usually generated through flood uncertainty quantification techniques, i.e. Monte Carlo Simulation. They are widely adopted by government and insurance company to delineate areas of land at high risk and guide the investment and emergency response strategies. 2.2 LISFLOOD-FP Flood Inundation Model A flood inundation model is an intergraded flood simulation model-chain which includes an estimation of stochastic rainfall, a simulation of rainfall-runoff and an inundation model of flood development (McMillan and Brasington, 2008). For stochastic rainfall estimation of certain catchment, according to the available precipitation records, a long synthetic rainfall series could be created. Hereafter, these series are applied into a rainfall-runoff model to generate the corresponding discharge estimation series. And the estimations of discharge are imported into a 2-D hydrodynamic model, which utilizes high-resolution elevation data to enable urban floodplain modeling at the smallest scales and paves the way for additional modules for vulnerability and damage assessment. Finally, the flood inundation model is expected to run within a proven uncertainty estimation framework and subsequently to compare with the real-world scenarios for model calibration and allow explicit uncertainties analysis. LISFLOOD-FP model is one of the most popular flood inundation models all over the world (Bates and De Roo, 2000). It is a coupled 1D/2D hydraulic model on the basis of a raster grid. LISFLOOD-FP model treats the flooding as an intelligent volume-filling process from the perspective of hydraulic principles by embodying the key physical notions of mass conservation and hydraulic connectivity. 2.2.1Principles of LISFLOOD-FP Model 2.2.1.1Model Structure and Concepts The basic components of the LISFLOOD-FP model is a raster Digital Elevation Model (DEM) (Bates and De Roo, 2000) of resolution and accuracy suf ¬Ã‚ cient to identify surface roughness for both the channel (location and slope) and those elements of the  ¬Ã¢â‚¬Å¡oodplain topography (dykes, embankments, depressions and former channels) considered necessary to  ¬Ã¢â‚¬Å¡ood inundation prediction. A  ¬Ã¢â‚¬Å¡ood consists of a large, low amplitude wave propagating down valley (Bates and De Roo, 2000). When the bankful  ¬Ã¢â‚¬Å¡ow depth is reached, water stops to be contained only in the main river channel and water spills onto adjacent shallow gradient  ¬Ã¢â‚¬Å¡oodplains. These  ¬Ã¢â‚¬Å¡oodplains act either as temporary stores for this water or additional routes for  ¬Ã¢â‚¬Å¡ow conveyance. C:UsersDaniel SunAppDataRoamingTencentUsers703775521QQWinTempRichOle[[emailprotected]){LA]KX[A1$UE8M8AV.jpg Figure 1 Conceptual model of the LISFLOOD-FP flood inundation model (Wilson, 2003a; 2003b) 2.2.1.2 Assumptions for LISFLOOD-FP Model In order to design a physical model simulating the flood development and to simply the numerical computation, the assumptions are stated as followings: The flow within channel can be represented by the kinematic wave approximations. The channel is assumed to be so wide and shallow that the wetted perimeter is approximated by the channel width. The flood flow can be gradually varied. Both In-channel and Out-of-channel flooding flow are treated as raster grids by using a series of storage discretised cells. Flow between storage cells can be calculated using analytical uniform flow formulas, i.e. the Saint-Venant and Manning equations. There is no exchange of momentum between main channel and floodplain flows, only mass is exchanged. 2.2.2 In-Channel Flow The hydraulic models consist of two main processes, representing the flow within the channel (In-channel Flow) and flow on the floodplain (Out-of-channel Flow). But we ignore the effects at the channel- ¬Ã¢â‚¬Å¡oodplain interface development of intense shear layers leads to a strongly turbulent and three-dimensional  ¬Ã¢â‚¬Å¡ow  ¬Ã‚ eld. In this project, one of the objectives is to quantify the uncertainty associated with the inundation process. In-channel Flow is defined that the channel flow is below bankful depth. Thus, the flow process is represented by using a classical one-dimensional hydraulic routine approach (1-D approach), which is described in terms of a simplification of the full one-dimensional St. Venant equation system (Knight and Shiono, 1996), which leads to a kinematic wave approximation obtained by eliminating local acceleration, convective acceleration and pressure terms in the momentum equation. 2.2.2.1 Saint-Venant Equations Due to simplicity of computation and ease of parameterization, the one-dimensional (1-D) Saint-Venant equations have been the most widely adopted approach for unsteady open channel flow. The partial differential Saint-Venant equations comprise the continuity and momentum equations under the following assumptions (Chow et al. 1988): Flow is 1-D, and depth and velocity vary only in the longitudinal direction of the channel. Velocity is constant, and the water surface is horizontal across, any section perpendicular to the longitudinal axis. Flow varies gradually along the channel so that hydrostatic pressure prevails and vertical accelerations can be neglected. The longitudinal axis of the channel is approximated as a straight line. The bottom slope of the channel is small and the channel bed is fixed. The effects of scour and deposition are negligible. Resistance coefficients for steady uniform turbulent flow are applicable so that relationships (e.g. Mannings equation) can be used to describe resistance effects. The fluid is incompressible and constant density throughout the flow. Therefore, the continuity equation states that the change in discharge with distance downstream (), and the change in the cross-sectional area of flow over time () are in balance. Thus, the lateral inflow ( ) to or from the channel and floodplain can be expressed as (Wilson, 2004). (2.1) where Q is the volumetric discharge in channel [L3/T], x is the longitudinal distance along the channel [L], t is time interval [T], A is the cross-sectional area of flow [L2] and q is the lateral inflow from other sources per unit length along channel [L2/T]. The momentum equation states that total applied forces is equal to the rate of momentum change in each unit of flow, plus the net outflow of momentum (Chow et al. 1988). For this project, the full dynamic wave equations can be simplified in terms of kinematic wave model. The assumptions are that local acceleration, convective acceleration and pressure terms are ignored, and the flow gravitational forces are equal to the frictional resistance force. The momentum equation can be written as: (2.2) where is the down-slope of the bed [-] and is the slope of friction [-] Roughness coefficients are defined as the resistance to flood flows in channels and floodplains. To introduce Mannings roughness ( n ), the Manning Equation is chosen. Therefore, the friction slope in the momentum equation can be described as: (2.3) where R is hydraulic radius [L]. Substituting the hydraulic radius, the momentum equation can be written as: (2.4) where n is the Mannings coefficient of friction and P  is the wetted perimeter of the flow [L]. However, for the Equation (2.4), there are some limitations such as only considering the down gradient hydraulic characteristics, and neglecting the backwater effects and shock waves. 2.2.2.2 Numerical Solution The 1-D Saint-Venant Equations are discretized using numerical methods of a finite difference approximation (Chow, 1988). Stream flow and cross section values are calculated with a simple linear scheme that uses a backward-difference method to derive the finite difference equations. Therefore, they are combined to obtain the following equations: (2.5) where Q is the volumetric discharge in channel [L3/T], x is the longitudinal distance along the channel [L], t is time interval [T], q is the lateral inflow from other sources per unit length along channel [L2/T], and is the geometry and frication factor of channel which is written as: (2.6) where is the Manning friction coefficient [T/ L1/3], is the channel width [L], and is the channel slope. Meanwhile, the finite difference equation can be set up in order to calculate the quantity Qi,j at each node (i, j), where i represents the space and j the time : (2.7) (2.8) in order to create a linear equation, the value of Q in the expression of Equation (2.5) is found by averaging the following values : (2.9) Note: All Equations variables refer to the definitions in Figure 2 C:UsersDaniel SunAppDataRoamingTencentUsers703775521QQWinTempRichOleH37F%N4L(VS%DNUG`X_(I4E.jpg Figure 2 Finite difference box for the linear kinematic wave equation 2.2.3. Channel Discretisation by Mesh Generation In order to conduct the kinematic wave simulation, the flow domain is spatially discretised into discrete elements or grid cells to represent the arbitrary modling area by numerical mesh generation process. It starts at the inflow point of each grid cell with indicator of the direction to the next downstream cell. With the help of Airborne Laser Altimetry (LiDAR) and Stereo Air-photogrammetry, the high-resolution DEM grid cells are able to contain topographic data, such as channel width, bed slope, manning friction coef ¬Ã‚ cient and bankful depth. Therefore, the numerical solution can be approximate obtained with the advantage of high-performance digital computers and high numerical stability. In this project, the regular high resolution rectangular grids mesh generation is adopted. However, despite that the mesh resolution in the region is increased, it resulted in less smooth of friction coefficients. This is because the polygonal area over which the various friction contributi ons were averaged was reduced. 2.2.4 Out-of-Channel Flow Out-of-Channel flow (i.e. Floodplain Flow) is defined that water is transferred from the channel to the adjacent overlying floodplain areas when bankful depth is exceeded by flood. However, the 1-D approach is not suitable to simulate the floodplain flows due to its incapability of capturing velocity variations and free surface across the channel. Thus, floodplain flows can be similarly described in terms of classical continuity and momentum equations, discretized over a grid of square cells, which allows the model to represent 2-dimensional dynamic flow on the floodplain. Therefore, we assume that each cell is treated as a storage volume and the change in cell volume over time is therefore equal to the  ¬Ã¢â‚¬Å¡uxes into and out of it during the time step (See Figure 3, Wilson, 2003a; 2003b). (2.10) where is the volume variation [L3] of each cell during time [T], and , , and are the volumetric flow rate [L3/T] respectively coming from the up, the down, the left and the right adjacent cells of the grid. C:UsersDaniel SunAppDataRoamingTencentUsers703775521QQWinTempRichOle7L0})O%E([emailprotected] Figure 3 Flows between cells on the floodplain with LISFLOOD-FP (Wilson, 2003a; 2003b) Flow between two cells is assumed to be simply a function of the free surface height difference between these cells, hence the following discretisation of continuity Equation (2.1) (See Figure 4 5) (2.11) (2.12) (2.13) where   is the water free surface height [L] at the cell node (i,j), and are the cell dimensions [L],    is the effective grid scale Mannings friction coefficient for the floodplain, and  and  describe the volumetric flow rates [L3/T] between the floodplain cell node (i,j). C:UsersuserDesktop1.jpg Figure 4 Discretization scheme for floodplain grid C:UsersDaniel SunAppDataRoamingTencentUsers703775521QQWinTempRichOleM`G%`D63ODY2$7)H3G4O7OQ.jpg Figure 5 Floodplain Flows between Two Cells The flow depth,  hflow, represents the depth through which water can flow between two cells, and is defined as the difference between the highest water free surface in the two cells and the highest bed elevation (this definition has been found to give sensible results for both wetting cells and for flows linking floodplain and channel cells). 2.3 Uncertainty in flooding inundation modeling It is the key factor to reduce or prevent the level of flood hazards that ensuring prediction accurately of the flood inundation area and providing reliable information of risk. In general, the result produced by flood models is only a single deterministic prediction for the peak flow of the flood. However, the confidence level of the output results would be affected by the uncertainty of input data in terms of peak flow, the topographic data, and the model parameters. As a result, the uncertainty associated with the flood inundation modeling is seldom quantified, It most likely because that the sources of uncertainty are not totally realised and lack of available data to study uncertainty. Uncertainty analysis of LISFLOOD-FP modeling has been studied in recent years. From those reports, the sources of uncertainty can be summarised into three major catalogues in terms of model data inputs, hydraulics parameters and model structures. 2.3.1Model data inputs 2.3.1.1 Hydrologic and meteorological data One of the most dominant input parameters is the design flow, which comes from flood frequency analysis and provides the boundary condition. However, the uncertainty of steamflow is inherent since it is derived from the stage-discharge rating curves on the basis of flood records, especially for the high-return-period flow events. In summary, there are four types of uncertainties associated with the hydrograph of steamflows, namely (1) watershed characteristics; (2) storm precipitation dynamics; (3) infiltration and (4) antecedent conditions. However, the storm precipitation dynamics has the largest impact on the prediction. Furthermore, the overall prediction of hydrologic models could be increase due to uncertainty-added by lacking of understanding of the spatial and temporal variability in precipitation, evapotranspiration, and infiltration. 2.3.1.2 Topographic data The topographic data is including both land surface digital elevation model (DEM) and river bed bathymetry. It is one of the dominant factors to predict the flood inundation area accurately. It does not only influence the hydrologic modeling process, but also the mapping water surface elevations. Firstly, the extraction of watershed characteristics (e.g. slope, streams and watershed boundaries) from DEM is affected by its resolution, leading to varied discharge values estimated from the hydrologic model. Secondly, the resolution of DEM and the accuracy of bathymetry affect the cross sections extracted for 1-D channel flow simulation and the interpolated meshes (or grids) for 2-D overland flow simulation. Thirdly, Bales and Wagner (2009) investigated the Tar River basin and revealed that high-quality topographic data, along with the appropriate application of hydraulic models are likely the most important factors affecting the horizontal extent and vertical water surface elevations of flood inundation maps. 2.3.2 Model structures The flood inundation models are also sensitive to the channel geometry in terms of cross sections number, cross-sectional spacing in between, finite-element mesh quality and hydraulic structures. Additionally, the type of model (1-D, 2-D or coupled) used in simulating the river hydrodynamics also brings uncertainty to the overall results. The geometry representation of channel is more critical to 2-D and (3-D) models since the elevation is defined at each mesh node distributed throughout the channel and floodplains. Moreover, the mesh generation strategies will affect 2- and 3-D models not only in the prediction of inundation area, but also the computational time (Horritt et al. 2006). 2.3.3 Hydraulics parameters Hydraulic models (e.g. 1-D, 2-D or coupled) used to simulate the river hydrodynamics and water surface elevation in floodplain are sensitive to a set of model parameters. Friction values (Mannings roughness coefficient, n), accounting for effects of variable cross sections, non-uniform slope, vegetation and structures at the sub-grid scale, have a significant impact on hydraulic simulations (Merwade et al., 2008). Mannings roughness coefficient (n), which is commonly assigned by using standard look-up tables for different substrate types, can range from 0.035 to 0.065 in the main channel, and 0.080 to 0.150 in the floodplains (Chow et al. 1988). Distributed data throughout the floodplain are seldom available as a basis for estimating friction values for the model domain. Many of the uncertainties in hydraulic models are lumped in the Mannings n value, such that the models can be calibrated through adjusting such a parameter. The difference in magnitude and changing channel conditions will cause the optimal set of parameters to be found in a slightly different area of the parameter space for each different flood event. Wohl (1998) analysed the uncertainty of Mannings n relative to a commonly used step-backwater model for channel reaches in five canyon rivers. The results indicated that the uncertainties in discharge estimation resulting from the roughness coefficients in step-backwater modeling of paleo-floods were comparable to or lower than those associated with other methods of indirectly estimation flood discharges. Pappenberger et al. (2005) analysed the uncertainty caused by Mannings n (range from 0.001 to 0.9) in the unsteady flow component of the 1-D model HEC-RAS. The results showed that many parameter sets could perform equally well even with extreme values. However, this was dependent on the model region and boundary conditions. Pappenberger et al. (2007) employed a fuzzy set approach for calibrating flood inundation models under the uncertainties of roughness and cross-section. The roughness of channel has been identified as more sensitive than the standard deviation of the cross-sectio n. 2.4 Integrated modeling and uncertainty analysis framework Flood risk maps are critical to help manage the risk of inundation, which are generated based on good understanding of the uncertainty associated with the various variables involved in flood inundation modeling. A sequential process is normally adopted, where hydrologic analysis starts first, and then hydraulic analysis and geospatial processing will follow. Merwade et al. (2008) proposed a conceptual fr

Hayden Carruth :: essays research papers

Hayden Carruth Scrambled Eggs & Whiskey is Hayden Carruth's most recent collection of works. Published in 1996, it reflects a dark, boozed washed view of the world throw the eyes of a 76- year-old man. His works reflect his personal experiences and his opinion on world events. Despite technical merit Carruth works have become depressing. Hayden Carruth is a child of the depression born in Vermont in 1921 where he lived for many tears. He now lives in upstate New York, where he taught in the Graduate Creative Writing Program at Syracuse University, until his recent retierment. He has published twenty-nine books, mostly of poetry but also a novel, four books of criticism, and anthologies as well. Four of his most recent books are Selected Essays & Reviews, Collected Longer Poems, Collected Shorter Poems, 1946-1991, and Suicides and Jazzers. He edited poetry for, Poetry, Harper's, and for 20 years The Hudson Review. He has received fellowships from the Bollingen Foundation, the Guggenheim Foundation, and the National Endowment for the Arts, most recently in 1995, a Lannan Literary Fellowship. He has won many awords including the Lenore Marshall Award, the Paterson Poetry Prize, the Vermont Governor's Medal, the Carl Sandburg Award, the Whiting Award, the Ruth Lily Prize, the National Book Award and The National Book Critics' Circle Award for Collected Shorter Poems, 1946-1991. In "Another" Carruth comments on the goal of poetry. He begins by dismissing truth and beauty; "Truth and beauty were never the aims of proper poetry and the era which proclaimed them was a brutal era." -Another The era mite have been brutal but "truth and beauty" where and still are a large part of "proper poetry". The collected works of William Shakespeare and Robert Frost both have great deal of truth and beauty in their works as well as the tragic ordeals in life while Carruth only sees the brutality of life. Carruth goes on to name the goal of poetry as: "...let justice be primary when we sing,..." -Another Even though he's primary goal is justice this collection of poems seems to be one long complaint about injustice. It is easy to agree with Carruth in the "Quality of wine" when he says "this wine is really awful, " unlike the poet, it is his unremitting winning that is awful. Like self commentary Carruth writes: "Language is defeated in the heavy, heavy day. Limp lines on the page like grass mown in the meadow." -The Heaviness This utter heaviness can be seen in the horrific poem "The Camp, " all 21 verses of it lament man's hardness of heart. In the second verse, a lighter through reads, "As the kittens were born

Comparison King rat and mcKenzies Boots :: essays papers

Comparison King rat and mcKenzies Boots Wartime. It is a time of pain, a time of agony, a time of great suffering. Yet through all the hardships of war, there always arises heroes, people who soar above all to rid the world of the evil that is war. What is it about such heroes that make them standout from the rest? More importantly, what is it about soldiers that enable them to survive the atrocities of war? There are many possible answers to this question such as being in top physical condition and having the proper combat and weapon training. More importantly, a time of war can take a heavy toll on one's mind and a person must have great mental strength in order to deal with the death, pain, and terror that result from war. Survival in war may depend more on mental strength than on physical strength. One important aspect of mental strength is having the will to survive and not giving up at all. In order to be strong mentally, one must also be able to block out all emotions and morals that could lead to weak ness and even lead to death. Having a good companion at a time of war could also be very helpful in the building of mental strength. All of these elements show how mental strength can be very important when it comes to surviving an unforgiving war. What exactly is the will to survive? A couple of scenarios explains it best. For example, it is what keeps a severely wounded man alive long enough until proper medical attention arrives. It is what prevents a soldier from going insane when things get uncontrollably out of hand. It is these things and a great deal more. In the novel King Rat by James Clavell, the character known as the King showed he had a very strong will to survive. He was stuck in a Japanese prison camp for the past couple of years and he had refused to give up on his life like the others. A good example of this was when a fellow prisoner had just died and he was talking to the doctor who had been in charge of him. "What'd he die of?" "Lack of spirit." The doctor stifled a yawn. His teeth were stained and dirty, and his hair lank and dirty, and his hands pink and spotless.

Networking

ITEC325 Final Study Guide True/False Indicate whether the sentence or statement is true or false. ____1. The value of layers in the OSI reference model is that it divides networking into a series of tasks, and then illustrates how those tasks relate to each other. ____2. When transmitting with FHSS, if interference is encountered on a particular frequency then that part of the signal will be retransmitted on the previous frequency of the hopping code. ____3. Increasing the speed of the WLAN will cause shorter delays in waiting for reflections. ____4. Because wireless technology has advanced at such a rapid pace, the earliest WLANs are now essentially obsolete. ____5. Of the 52 subchannels, 32 are used for standard transmissions and 20 are used for FEC transmissions. ____6. When an ESS is installed it is desirable to configure the areas of coverage much like cells in a cellular telephone system. ____7. The first major function of the MAC layer involves defining procedures for a wireless device to discover the WLAN. ____8. Wireless authentication involves a user logging on to the access point. ____9. CSMA/CA eliminates the possibility of collisions. ____10. A home agent is a forwarding mechanism that keeps track of where the mobile computer is located. ____11. Wireless access to network resources can improve the quality and productivity of meetings. ____12. Early adopters of wireless LANs were sometimes called â€Å"racehorses†. ____13. Several vendors are working on comprehensive network management solutions that integrate wireless networks into the same deployment, operations, and management as a wired network. ____14. When considering the number of users who will be associated with an access point, it is only necessary to count the number of users, not the type of work they do. ___15. Establishing and staffing an internal help desk is one of the most effective means of support. ____16. It is important to evaluate the placement of the access points and antennas throughout the proposed site in order to meet the design goals. ____17. The most common type of antenna for a WLAN is an semi-directional antenna, also known as a dipole antenna. ____18. A drawback of spectrum analyzers is that the information is displayed in graphical form and not as raw data. ____19. The industry-standard form for site survey documentation is IEEE 802. 11D. ____20. The first step in collecting RF information is to position the access point in what may appear to be the most logical location. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____21. What is the top layer of the OSI reference model? a. | application| c. | physical| b. | presentation| d. | transport| ____22. Which layer of the OSI reference model permits the devices on the network to hold ongoing communications across the network? a. | presentation| c. | transport| b. | session| d. | network| ____23. ___ signals by nature transmit on only one frequency or a very narrow portion of the frequencies. a. | Broadband| c. | Radio| b. | Computer| d. | Heat| ____24. What is a disadvantage of narrowband transmissions? a. | requires a complicated algorithm| c. | expensive to implement| b. | not well regulated| d. | interference from another radio signal| ____25. When was the concept used by FHSS technology developed? a. | during World War I| c. | in the 1960s| b. | during World War II| d. | in the 1980s| ____26. In FHSS, the amount of time needed to move from one frequency to another is the ____ time. . | dwell| c. | lift| b. | switch| d. | hop| ____27. According to FCC regulations, all FHSS systems in the 900 MHz band must change frequencies through 50 channels and cannot spend more than ____ on one frequency each 20 seconds. a. | 20 milliseconds| c. | 400 milliseconds| b. | 30 milliseconds| d. | 1 second| ____28. Bluetooth divides the 2. 4 GHz frequency into ____ different frequencies spaced 1 GHz apart. a. | 52| c. | 79| b. | 68| d. | 93| ____29. ____ is not part of a frame. a. | Length| c. | Channel| b. | Parity| d. | Data| ____30. How does OFDM work? a. signals are broken up and the parts are sent in parallel| b. | the same signal is sent on multiple channels| c. | one signal is sent twice on the same channel| d. | a signal is sent over a wired network at the same time as the wireless network| ____31. IEEE has divided the ____ layer into two sublayers: Logical Link Control (LLC) and Media Access Control (MAC). a. | Physical| c. | Transport| b. | Data Link| d. | Session| ____32. The Physical Layer Convergence Procedure (PLCP) standards for 802. 11b are based on ____. a. | DSSS| c. | OFDM| b. | FHSS| d. | PYS| ____33. The 802. 1b standard specifies ____ frequencies that can be used, beginning at 2. 412 GHz. a. | 4| c. | 14| b. | 10| d. | 30| ____34. The ____ coding technique consists of a set of 64 8-bit code words. a. | chipping| c. | Barker| b. | fixed scramble| d. | complementary code keying| ____35. The ____ field of an 802. 11a frame consists of 10 repetitions of a short training sequence signal and two repetitions of a long training sequence signal. a. | Rate| c. | Synchronization| b. | Service| d. | Parity| ____36. A BSS is ____. a. | a group of wireless devices that is served by a single access point| b. a unique identifier| c. | a geographical area where wireless devices reside | d. | two or more networks that are connected through a common distribution system| ____37. What is the minimum number of BSS networks required to form an ESS? a. | 0| c. | 2| b. | 1| d. | 10| ____38. All frames contain the MAC address of the source and destination device, a frame sequence number, and a frame ____ used for error detection. a. | unit| c. | sum| b. | flag| d. | check sequence| ____39. The ____ field appears first in a management frame. a. | Frame control| c. | Destination address| b. | Duration| d. | BSSID| ___40. When an AP accepts or rejects a wireless device it sends a(n) ____ frame. a. | association request| c. | disassociation| b. | association response| d. | reassociation| ____41. In an infrastructure network the beacon interval is normally set to ____ ms, although it can be modified. a. | 1| c. | 100| b. | 10| d. | 1000| ____42. What is the default authentication method according to the 802. 11 standard? a. | basic| c. | shared key| b. | open system| d. | priv ate key| ____43. What is the first step in shared key authentication? a. | AP encrypts challenge text and sends it to wireless device| b. wireless device encrypts challenge text and sends it to AP| c. | AP sends wireless device an authentication frame that contains a block of text known as the challenge text| d. | wireless device sends an authentication frame to the AP| ____44. Following authentication, if the access point accepts the wireless device, it reserves memory space in the AP and establishes a(n) ____ ID for it. a. | association| c. | member| b. | device| d. | authentication| ____45. Why is CSMA/CD unsuitable for wireless networks? a. | Hidden node problem| c. | difficult to synchronize backoff times| b. difficult to detect collisions| d. | Both A and B| ____46. The 802. 11 standard provides an option that can be used when collisions occur due to a hidden node. That option is known as ____. a. | virtual node detection| c. | virtual carrier sensing| b. | node collision prot ocol| d. | hidden node detection| ____47. The RTS/CTS protocol is especially taxing when ____ data packets are being transmitted. a. | short| c. | encrypted| b. | long| d. | redirecting| ____48. ____ effectively prevents collisions because every device must wait until it receives permission before it can transmit. a. | CSMA/CD| c. Polling| b. | CSMA/CA| d. | Fragmentation| ____49. The ____ draft defines a superset of features that is intended to provide QoS over WLANs. a. | 802. 11a| c. | 802. 11e| b. | 802. 11b| d. | 802. 11g| ____50. An access point sends out a beacon frame containing a ____ identifying the stations that have buffered frames waiting at the access point. a. | buffer list| c. | waiting map| b. | traffic indication map| d. | buffered cache| ____51. With MobileIP, the ____ assigns the mobile computer a new (but temporary) IP number. a. | local AP| c. | foreign agent| b. | foreign AP| d. | roamed network| ____52. What do many industry experts believe is the greatest opportunity for business-process improvement at the beginning of the 21st century? a. | access to the Internet from employee’s desks| b. | extending network access to employees who are away from their desks| c. | providing wireless hotspots in rural communities| d. | All of the above| ____53. According to a study conducted by NOP World–Technology, wireless LANs enable users to be connected to network resources ____ additional hours per day. a. | . 5| c. | 1. 75| b. | 1| d. | 2. 5| ____54. Which organization would most likely not benefit from the introduction of a wireless LAN? . | business that is rapidly losing market share and has changed CEOs three times in the last 18 months| b. | business that has captured a niche in the marketplace and currently has no serious competitors| c. | organization that is fighting a fierce battle with its competitors| d. | they would all benefit| ____55. According to NOP-World Technol ogy, ____ percent of end users said that a WLAN improves their quality of life by increasing flexibility and productivity, and saving time. a. | 30| c. | 87| b. | 56| d. | 93| ____56. Intel recommends that once the ROI model is complete, larger organizations should return to step ____. . | 1| c. | 3| b. | 2| d. | 4| ____57. A(n) ____ provides wireless LAN service, for free or for a fee, from a variety of public areas, including coffee shops, public libraries, and airport lounges. a. | wireless gateway| c. | hotspot| b. | infrastructure network| d. | ad hoc network| ____58. Only in areas where low bandwidth is acceptable or an ad hoc wireless network will be used should ____ networks be considered. a. | 802. 11a| c. | 802. 11g| b. | 802. 11b| d. | 802. 11 pre-N| ____59. What is a disadvantage of thin access points? a. | complicated network management| b. | handoff time is increased| c. | very expensive| . | all thin access points and switches are proprietary| ____60. ____ generates t he highest level of interference. a. | Marble| c. | Paper| b. | Bulletproof glass| d. | Metal| ____61. In a 802. 11b network, how many power users should be associated with one access point? a. | 5| c. | 25| b. | 15| d. | 50| ____62. What should you do when electrical alternating current power is not available near the AP location? a. | move it to another location| c. | use a battery| b. | use wireless power| d. | user Power over Ethernet| ____63. ____ is one of the most effective strategies for providing support for a new wireless network. . | Creating formal user support groups| b. | Assigning support to the information technology department| c. | Maintaining a help desk| d. | Outsourcing support to a third party| ____64. In a site survey analyzer, vendors use an algorithm or a lookup table to convert ____ values to dBm, mW, or signal strength percentage. a. | GHz| c. | RSSI| b. | MAC| d. | RFID| ____65. What is a drawback of a spectrum analyzer? a. | information is displayed in g raphical form and not as raw data| b. | information is displayed as raw data, not in graphical form| c. | information only applies to one frequency| d. only made by a single manufacturer and very expensive| ____66. How are business requirements for a WLAN obtained? a. | reading company documentation| c. | interviewing technical staff| b. | interviewing management| d. | Internet research| ____67. What is the best way to gather site-specific documentation? a. | reviewing blueprints| c. | inspecting the site| b. | interviewing management| d. | viewing documentation| ____68. What is the first step in collecting RF information? a. | position the access point| c. | document AP position| b. | note the objects and layout of the room| d. | walk around room to test signal| ___69. What should you be sure to do when collecting RF information? a. | take pictures of your location as you move around| b. | connect to the Internet and download a file to test bandwidth| c. | write down your perceptio n of connection speed| d. | observe the data being displayed by the software measurement tools| ____70. What affects the coverage pattern? a. | wireless protocol| c. | notebook operating system| b. | objects that interfere with the RF signal| d. | skill of person conducting site survey| ____71. The term ____ describes the rate of transmission falling as the device moves farther from the AP. a. coverage pattern| c. | data rate boundaries| b. | packet throughput| d. | RF frequency| ____72. What affects transmission range? a. | distance only| c. | distance and objects in path| b. | objects in path only| d. | wireless protocol| ____73. What provides the greatest source of RF interference? a. | mirror| c. | desk| b. | interior wall| d. | chair| ____74. What type of AP antenna is most commonly used in a site survey? a. | omnidirectional| c. | highly-directional| b. | semi-directional| d. | parabolic| ____75. The ____ setting of a site survey analyzer specifies the AP that will be involved in the test. a. Destination MAC Address| c. | Packet Tx Type| b. | Continuous Link Test| d. | Delay Between Packets| ____76. Why is it important to document existing wired and wireless networks? a. | to examine possible sources of interference| b. | to ensure that the new or expanded wireless LAN will â€Å"dovetail† into what is already in place| c. | to avoid providing overlapping network coverage| d. | to better understand the basic networking needs of the organization| Matching Match each term with the correct statement below. a. | physical layer| f. | direct sequence spread spectrum| b. | channel bonding| g. | quadrature phase shift keying| c. frequency hopping spread spectrum| h. | transport layer| d. | Forward Error Correction| i. | orthogonal frequency division multiplexing| e. | network layer| ____77. uses a range of frequencies that change during the transmission ____78. transmits a secondary copy along with the primary information ____79. sends signals to the netw ork or receives signals from the network ____80. ensures that error-free data is given to the user ____81. sending multiple signals at the same time Match each term with the correct statement below. a. | dynamic rate shifting| f. | frames| b. | digital certificate| g. | contention| c. | scanning| h. roaming| d. | ad hoc mode| i. | polling| e. | reassociation| ____82. segments in a packet ____83. any device can attempt to transmit a message at any time ____84. as a mobile device moves farther away from the AP, the transmission speed decreases ____85. wireless devices communicate directly between themselves ____86. digital documents that associate an individual with a key value ____87. receiving wireless device looking for beacon frames Match each term with the correct statement below. a. | ad hoc| f. | Point-to-multipoint remote wireless bridge| b. | plenum| g. | soft benefits| c. | current network table| h. thin access point| d. | fat access point| i. | hard benefits| e. | ROI| ____ 88. standard measure of the profitability of a project ____89. benefits that are difficult to quantify ____90. management functions of a WLAN such as user authentication, encryption, and access point configuration are included within the AP itself ____91. air handling space above drop ceilings ____92. benefits that can be easily measured or quantified ____93. used to connect multiple LAN segments Match each term with the correct statement below. a. | coverage pattern| f. | network analyzer| b. | spectrum analyzer| g. | transmission range| c. packet throughput| h. | unicast| d. | site survey analyzer| i. | data rate boundary| e. | multicast| ____94. frame is sent from one sender to multiple receivers with a single â€Å"transmit† operation ____95. area in which the signal can be received from the AP ____96. frame is sent from one sender to a single receiver ____97. scans the radio frequency spectrum and provides a graphical display of the results ____98. measurement tool that is specifically designed for conducting a wireless LAN site survey ____99. range of coverage for a specific transmission speed ____100. number of packets sent and received and the data rates for each