Computer networks Essay Example | Topics and Well Written Essays - 1000 words

Computer networks - Essay Example When the size W of the window gets to 0, transmission is stopped. Increasing the size of the windows enhances the bandwidths and makes the connection more efficient. Considering the basic functionality of the window size, that is holding the data by a device from its peer at any one time, increasing the size will then make the device to hold more data in the buffer at a time. This will enhance efficiency of communication. Over reliance on cumulative acknowledgements can cause data transfer inefficiency due to packet loss. Selective acknowledgement allows the receiver of the packets to be able to accept packets that are discontinuous but received correctly. This is in addition to the last successful contiguous byte that was received. This is the same situation that happens in a basic acknowledgement. In this mode, the acknowledgement specifies the SACK blocks and they are then conveyed through starting and ending sequence numbers. The SMTP processes the email address of the recipient in the same domain. When the names correspond, the message is directly routed to the POP3 server or the IMAP server. In this case, it is routed to the SMTP. In the case of the local client who is sending an email over the network, there will be no communication with another domain server. This communication will be from the internal mail server 10.1.0.10 from 10.1.0.10/8. On getting the email address, the SMTP server can connect to the recipient SMTP server. For the local client, this communication is maintained within the same server. For sending an email over the internet, the information is passed over to the border router. b) A DNS lookup occurs when a device supporting an IP asks the DNS server for the IP address that is associated with a certain domain name. When looking for postmaster@myertor.com, the series of lookups that will take place include; the primary DNS server will be seeking to establish the IP address for postmaster@myertor.com. The first request will

Diabetes, Cardiovascular Disease...What do you know about them Essay

Diabetes, Cardiovascular Disease...What do you know about them - Essay Example Discussing gestational diabetes is relevant to me as the disease runs in the family. In addition, it has relevance to the goals that I want to take in the future: becoming an obstetric nurse and an endocrinologist. Health practitioners believe that prevention is better than cure and that pregnant women must be taught on how to improve their health and their baby through early prenatal care and regular prenatal visitation. However, I believe that educating them about risk factors and preventive interventions will not immediately create awareness towards action to prevent gestational diabetes. Instead of focusing on risk factors and preventive strategies, why not inform pregnant women of the complications of gestational diabetes to them and their baby? This may create fears or worries but surely, pregnant women will take immediate action to avoid complications and inquiry about risk factors and necessary interventions follow. Gestational diabetes poses some life-threatening and chronic conditions both on the pregnant women and newborns. Women with gestational diabetes and who are obese may develop type 2 diabetes later in life. They have also increased susceptibility and mortality to other illnesses such as pneumonia and influenza. Women with gestational diabetes have marked biochemical imbalances which may lead to life-threatening conditions diabetic ketoacidosis (DKA), hyperosmolar (nonketotic) coma, and high blood pressures. In addition, women with gestational diabetes tend to deliver babies via cesarean section and acquire birth injury (trauma) due to large infant size. Meanwhile, babies are also harmed if the mother has gestational diabetes. According to the CDCs 2011 National Diabetes Fact Sheet, 5% to 10% of babies suffered from major birth defects while 15% to 20% of fetuses are spontaneously aborted if women developed diabetes early in pregnancies (9). There is also a slight

Finance and accounts Essay Example | Topics and Well Written Essays - 5250 words

Finance and accounts - Essay Example Stock markets are very volatile and investors need to learn through various important concepts before proceeding to invest their money to ensure satisfactory returns.Many at times there may be possibilities that investors suffer on the back drop of decreased prices after they invest. These situations should at least be reduced if they cannot be reduced as a whole. The process of loss reduction involves a complex understanding about the following terminologies:1.CAPM and Arbitrage Pricing Theory 2.Efficient markets hypothesis and Pecking order theory 3.Modigilani and Miller approach and Residual theory 4.Symbolic interactionism, ethnography and phenomenology 5.Conceptual framework of accounting and 6.Conceptual framework of management accounting.These abovementioned theories explain the basics of share trading and knowledge of them is a must to avoid risk in the stock market. 1.CAPM and Arbitrage Pricing TheoryCapital Asset Pricing Model (CAPM): It was developed to predict the future value of shares based on the previous trends in market equilibrium. It establishes the underlying relationship between the returns expected in the light of unavoidable risk. Any investment can be classified into risk free or portfolio categories. It analyzes the return which a portfolio is expected to deliver in the form of a characteristic line which comprises of three primary measures – the alpha (ÃŽ ±), Beta (ÃŽ ²) and unavoidable risk. ÃŽ ± is the simple intercept of the line and is bound to be zero and any value below that would avert the investor to participate in that particular stock. Unavoidable risk is the risk relating to a particular stock or industry which can be avoided or reduced comprehensively in a portfolio. Hence, the main determinant of the stock price is the ? which defines the sensitivity of a stock in relation to market changes. If it is more than 1, the stock is supposed to be more volatile than the market and vice versa. The formula for evaluating ? i s: Rj = Rf + (Rm-Rf)?j where Rj refers to the return expected of the security, Rm is the market return and Rf is the risk free return (treasury bond interest rate). ? is the unavoidable risk. The values of ? for many active stocks can be obtained through data published by various financial concerns. Thus, the expected return can be calculated. The same ? can also be interpreted as the discounted rate of the dividends to ascertain the value of the stock and thus by equating both the values, one can conclude whether a particular stock is over or undervalued. The underlying assumptions are: 1. Existence of efficient capital markets 2. Zero costs for transactions 3. No restrictions 4. Investors cannot influence the markets 5. Non-incurrence of taxes Specific situation: Let us evaluate a situation comprising of 7% Treasury bill rate and portfolio market returns of 12% to estimate the share value of pro-fli Corporation which contains a ? of 1.3. According to the formula, the share value w ould be: .07+(.12-.07) *1.3 which gives a result of 13.5%. This shows that when ? is more, the returns tend to be more rewarding. In the same case, if ? is estimated to

World Hunger Essay Example | Topics and Well Written Essays - 500 words - 1

World Hunger - Essay Example Poor countries that are in the process of developing do not have enough economic reserves and human capital to provide for the sustenance of their population. Furthermore, they are made to export their few assets particularly their natural resources that leads to a reduction in their capital stock. Also, investors ignore developing countries because they cannot produce feasible profits due to lack of infrastructure. Thus, major businesses do not invest their capital in the developing countries and without the investment, the productivity ceases to increase. Cycle of economic distress keeps the countries in a permanent stage of poverty and under development. Developing countries all around the globe basically lack the general infrastructure that is important for these countries to rise above the economic deficiency that is the leading cause of hunger. The general infrastructure includes a solid road system, warehouses and good irrigation systems and the lack of these causes an increase in transport expenses, deficient facilities for storing and poor water supplies. This limits the average farming produce and hence results in a lower amount of food being available. Considering the major problems, the answer to hunger is building reliable systems of energy, effective means of transportation and communication. This would provide incentives to the potential investors and hence result in generation of capital in the developing nations. Economic growth is possible by the investments coming from the private sector. Business activities increase proportionally to the growth of investment which in term increases the productivity as well as the distribution of goods. This assists in the satisfaction and fulfillment of the common people. In the underprivileged areas of the world, for example the sub-Saharan Africa, poor geographical location and political turmoil has led to small and unreachable

Finance and accounts Essay Example | Topics and Well Written Essays - 5250 words

Finance and accounts - Essay Example Stock markets are very volatile and investors need to learn through various important concepts before proceeding to invest their money to ensure satisfactory returns.Many at times there may be possibilities that investors suffer on the back drop of decreased prices after they invest. These situations should at least be reduced if they cannot be reduced as a whole. The process of loss reduction involves a complex understanding about the following terminologies:1.CAPM and Arbitrage Pricing Theory 2.Efficient markets hypothesis and Pecking order theory 3.Modigilani and Miller approach and Residual theory 4.Symbolic interactionism, ethnography and phenomenology 5.Conceptual framework of accounting and 6.Conceptual framework of management accounting.These abovementioned theories explain the basics of share trading and knowledge of them is a must to avoid risk in the stock market. 1.CAPM and Arbitrage Pricing TheoryCapital Asset Pricing Model (CAPM): It was developed to predict the future value of shares based on the previous trends in market equilibrium. It establishes the underlying relationship between the returns expected in the light of unavoidable risk. Any investment can be classified into risk free or portfolio categories. It analyzes the return which a portfolio is expected to deliver in the form of a characteristic line which comprises of three primary measures – the alpha (ÃŽ ±), Beta (ÃŽ ²) and unavoidable risk. ÃŽ ± is the simple intercept of the line and is bound to be zero and any value below that would avert the investor to participate in that particular stock. Unavoidable risk is the risk relating to a particular stock or industry which can be avoided or reduced comprehensively in a portfolio. Hence, the main determinant of the stock price is the ? which defines the sensitivity of a stock in relation to market changes. If it is more than 1, the stock is supposed to be more volatile than the market and vice versa. The formula for evaluating ? i s: Rj = Rf + (Rm-Rf)?j where Rj refers to the return expected of the security, Rm is the market return and Rf is the risk free return (treasury bond interest rate). ? is the unavoidable risk. The values of ? for many active stocks can be obtained through data published by various financial concerns. Thus, the expected return can be calculated. The same ? can also be interpreted as the discounted rate of the dividends to ascertain the value of the stock and thus by equating both the values, one can conclude whether a particular stock is over or undervalued. The underlying assumptions are: 1. Existence of efficient capital markets 2. Zero costs for transactions 3. No restrictions 4. Investors cannot influence the markets 5. Non-incurrence of taxes Specific situation: Let us evaluate a situation comprising of 7% Treasury bill rate and portfolio market returns of 12% to estimate the share value of pro-fli Corporation which contains a ? of 1.3. According to the formula, the share value w ould be: .07+(.12-.07) *1.3 which gives a result of 13.5%. This shows that when ? is more, the returns tend to be more rewarding. In the same case, if ? is estimated to

Influences of Innovation at Apple Inc Case Study

Influences of Innovation at Apple Inc - Case Study Example The present case study dwells on the innovative features of the business at Apple Inc. The discussion commences from its very beginning and ends with the contemporary strategies and business of the firm. Apple Inc., (Apple) is a US - based multinational corporation that focuses on design and manufacture of consumer electronics and closely related software products. The company was established in Cupertino, California on April 1, 1976, engaged in designing, developing, selling and supporting a wide range of personal computers, portable media players, mobile phones, computer software, computer hardware and hardware accessories. Till 2007, the firm opened around 200 retail stores across five countries and one online store through which hardware and software products are being sold (Retail Stores). In the year 2008, the firm was awarded the best corporate performer organized by the famous business magazine, Business Week. (Best Performer Award 2008). Apple started its innovation journey with its first Apple computer in the year 1976. After that the company introduced the Apple II microcomputer on April 16, 1977 and it was different from its major rivals, the TRS-80 and Commodore PET, mainly because of its color graphics and an open architecture. In 1983, the company introduced the Lisa, the first commercial personal computer to employ a Graphical User Interface (GUI). In the early 2000s, Apple expanded its focus on software and included professional and consumer video, music, and photo production solutions with a view to promote its products as a "digital hub". Apple developed its own operating system to run on its hardware such as Macs, Mac OS X and Mac OS X v10.5 Leopard. Apple also independently developed computer software titles for its Mac OS X operating system. Apple also offered a range of professional software titles. On May 19, 2001, Apple launched its first official Apple retail stores (Appendix I) in Virginia and California and continued to set up more stores in the US and other countries. Apple retail stores are a chain of stores owned and operated solely by Apple Inc., dealing in computers and consumer electronics. On October 23, 2001, Apple introduced the iPod digital music player equipped with a 5 GB hard drive and a monochrome screen. The current models can store up to 160 GB and display video, play games, and support a wide range of third-party add-on devices. Apple added new models of iPod(R) touch, after the success of the iPod touch (Appendix II) launched in 2007. Another innovative milestone in the launch of Apple products was the Apple iPhone. It was introduced by the company in late June 2007 at the top price of $599 with 8GB and a less price of $499 with 4GB. iPhone (Appendix III) was one of the most anticipated electronic devices of the decade (Apple Inc History). AppleCare is a customer service program designed by the company to meet the needs of individuals and businesses. In addition, there are numerous online resources within the AppleCare Support website that provide valuable information and instructions. Apple's self-servicing account program is designed for institutions and businesses - for

Psychological Motives for Becoming a Terrorist Essay Example for Free

Psychological Motives for Becoming a Terrorist Essay Introduction Suicide bombing, a major terror strategy of terrorists is, if not the most, one of the most gruesome acts anybody can commit. It is outright crazy and stupid. One must be beside the normal to be entertaining such a thought in mind. Ironically, fanatics who have committed and attempted suicide bombings in the past, were deemed normal until the day when the execution of their ultimate plans were made public whether foiled or completed. People who are afflicted with mental disorder may, as other people, travel for the same reasons – vacation, visiting friends or relatives, business, recreation, and sometimes for religious or spiritual focus (Miller Zarcone, 1968). Others indeed may travel for reasons other than the normal – for reasons triggered by malformed mental state such as the men who carried out the 911 attack of the Twin Towers in New York. Along the 911 attack, suicide bombing through aircraft came to prominence resulting in the stirring of the awareness among the international public of the fact that the regular traveler might not be that â€Å"regular† anyway. It is probable that some of them are driven by excessive anger or motivated by utopic hope as taught in the communities wherein they have pledged their life allegiance (Silke, 2003). Just a few months ago, upon the return of former Pakistani Prime Minister Benazir Bhutto to her home country, 124 were killed and 320 plus got injured as a result of another suicide bombing. The bomber threw grenades among crowds of people and afterwards blasted himself to death (CNN update, Oct.18, 2007). It’s difficult to think of sensible reasons why a sane person (if that person was ever considered sane by his colleagues) has committed such an act in the first place. To spend and expend one’s self for a noble cause is commendable only if they benefit people outside one’s own community. It’s never an ideal to advance a religion’s cause at the expense of the lives of other people. A suicide bomber is demented in that even in the logic of religion, all religions presupposed a benevolent god who is both powerful and loving. There must be distortions somewhere within the suicide bomber’s mind to have associated the act of delivering a bomb and acts of piety. Rationale of the argument ~Understanding mental health The majority of theories and models of human behavior fall into one of two basic categories: internal perspective and external perspective. The internal perspective considers the factors inside the person to understand behavior. People who subscribe to this view understand behavior as psychodynamically oriented. Behavior is explained in terms of the thoughts, feelings, past experiences and needs of the individual. The internal processes of thinking, feeling, perceiving and judging lead people to act in specific ways. This internal perspective implies that people are best understood from the inside and that people’s behavior is best interpreted after understanding their thoughts and feelings (Jourad, 1963). The other category of theories takes an external perspective. This focuses on factors outside the person to understand behavior. External events, consequences of behavior, environmental forces to which a person is subject, are emphasized by this external perspective. A person’s history, value system, feelings and thoughts are not very important in interpreting actions and behavior. Kurt Lewin for instance considered both perspectives in saying that behavior is a function of both the person and the environment (Tiffin, McCormick, 1958). Man is a social being and as such his personality is viewed from the society and culture where he belongs. A society represents a geographical aggregate and has boundaries, similar government or a group of persons in meaningful interaction and engaged in social relationship. Personality is the individualizing traits of man which constitute his singularity and differentiate him from any other human being. The three determinants of personality: 1] biological heritage which has direct influence on the development of personality. This includes musculature, the nervous system, and the glands; 2] E.Q. factor describes qualities like understanding one’s feelings, empathy for the feelings of others, and the â€Å"regulation of emotion in a way that enhances living (Gibbs, 1995);† 3] environmental factors. Taking everything normal, environment plays an important role in personality development. Environmental factors are cultural environment, social environment, home and family, culture, status and role and social agent. Many of men’s pronounced stirred-up state of mind such as fear, anger, disgust, and contempt, have posed the question, why? What has caused such a reaction? What has brought a change to his/her behavior? What is the frustration that has brought about such behavior? In the world of a suicide bomber, he/she contemplates on various input or stimuli from the world he/she evolves in. There are frustrations of every form and even without these, his/her psyche or mental state functions on the basis of anything he/she receives (actively or passively) from the milieu. Life’s problems are numerous and as long as one is alive and kicking he will always be faced with problems, be they big or small. Such problems stir-up one’s emotions or feelings which maybe pleasant or unpleasant. Physiological problems, environmental problems, personal deficiencies and psychological concerns bring on a variety of responses; some predictable, others are not. Disorganization of family life, disintegration of personality brought about by depression, great personal suffering, any of these may take any person beyond the limits of his tolerance. Man is born in a social environment surrounded by cultural norms and values. He is faced with cultural taboos and acceptable social behavior. Numerous environmental factors come to the fore which may or may not be easily overcome. One of the most difficult problems in this area is one’s cultural dos and don’ts. Environmental frustrations cannot be avoided, for there are always certain factors in a person’s growth and achievement. Psychological or internal problems are the most difficult to resolve as they are within the inner feelings of a person. One may not be able to detect his/her concerns/anxieties through his /her overt behavior. It may only be inferred from what his/her inner thoughts and feelings are but will not know what caused such a feeling. Psychological concerns of various forms represent a more serious threat to the personality of the individual than do environmental pressures. If severe enough, they may create considerable emotional tension with accompanying behavior disorders. Reacting to pressures and other concerns such as frustration varies from person to person because of their personality differences. These reactions maybe defensive, neurotic or psychotic. Most people are sympathetic to people who develop physical ailments, but regard an individual with mental disorder as â€Å"crazy.† At this juncture, does a suicide bomber then be considered a person with a mental disorder or deemed as â€Å"crazy?† definitions of mental health vary considerably. Freud when asked what he thought a normal, healthy person should do well replied â€Å"love and work.† Karl Menninger’s (1956) definition is quite similar to Freud’s. He states: â€Å"Let us define mental health as the adjustment of human beings to the world and each other with a maximum of effectiveness and happiness. Not just efficiency, or just contentment, or the grace of obeying the rules of the game cheerfully. It is all together. It is the ability to maintain an even temper and happy disposition. This, I think,   is a healthy mind.† When we therefore, try to define mental health, we have in mind the adjustment process which an individual brings into force when he is faced with a problem situation. Adjustment is defined as an individual’s manner of reacting or responding adequately to a perceived problem. From the standpoint of mental health, adjustment refers to a happy and socially acceptable response to life’s situations. Mental health therefore, is the ability of the individual to function effectively and happily as a person in one’s expected role in a group and in the society in general. It is a condition of the whole personality and is not merely a condition of the â€Å"mind† as is often supposed. It is an out-growth of one’s total life and is promoted or hindered by day-to-day experience, not only by major crises as some assume (McCllelland et al, 1973). Mental health is the capacity to live harmoniously in a changing environment; to face and solve one’s problems in a realistic manner; to accept the inevitable, and to understand and accept one’s own shortcomings as well as the shortcomings of others. In this sense, people who develop and encourage Jihad or any â€Å"terroristic† ideas and brainwash others to do the same, are seen people who do have unrealistic way of looking at life and their experiences. They are commonly classified as people having delusions of grandeur among others. This term refers to people who experience a bloated sense of importance or missions and oftentimes associated with corresponding persecution complexes (Jourad, 1963). They therefore harbor also a sense of anxiety that some people are out there to cut off their goals and obstruct their missions. Their resolve to deliver their target aims is even stronger the reason for their methodical and systematic way of doing things. Since they cannot accept that they must co-exist with people whose beliefs radically differ from theirs, they accept the notion that annihilation is a solution and dying a martyr’s death to ensure this goal is the ultimate sacrifice. This kind of mindset comes only from a frame of thinking that has been exposed only to a few options; in fact, only very narrow options. That option is the radical Islamic alternative and nothing else. When living in this world, co-existence is not just something that is talked about inside the halls of the academe: co-existence signifies a mindset that is healthy as well and free from disorders. Mental health is a matter of degree. There is no hard and fast line that separates health from illness. It is not a simple matter to divide the population into two distinct groups-those who should be institutionalized and those who should not be. Many of us at one time or another exhibit traits and pattern of behavior which if, accentuated and continuous, would necessitate psychiatric care (Jourad, 1963). Though radical a thought this may seem, and naturally sounds unrealistic, the ideal place is to set monitoring and evaluation of mental hygiene at some point in time. How to do this is going to be a big issue, expectedly. However, terrorism and the likes of suicide bombing can probably be controlled in some ironic way: by referring to them as idiosyncratic, delusional or even possessing mental disorders. Another way of classifying them is through the Diagnostic Statistical Manual IV (DSM) classification system; these people are versions of psychopaths or psychotics; because the symptoms are there and they cannot function normally among any general population. ~Towards developing a Strategy or Intervention Since the argument of this paper stands on looking at the acts of a suicide bomber as acts emanating from someone with mental illness, it follows that approaches to its reduction or elimination be provided or examined as well. There are three ways of looking at developing and establishing a strategy or intervention: the preventive, therapeutic, and the curative Kolb et al, 1974). There are subtleties that engulf these three but it is good to explore these dimensions. The preventive approach is based on the principles that the best way to ensure a well-adjusted individual is to surround him with environmental influences that will enable him to develop his full potentialities, to obtain emotional stability, and achieve personal and social adequacy. The therapeutic aspect is concerned with the attempt to correct minor behavioral adjustments through the various counseling and techniques of psychotherapy, or adjust to the social/or physical environment of the person in order to help him obtain the amount of emotional security and self-confidence necessary. The curative approach is sometimes called â€Å"preventive psychiatry† and is concerned with the detection and correction of serious but curative but behavioral maladjustments. Although this is the work of a trained clinician or psychiatrist, it is helpful for the layman to have at least a fundamental knowledge of the major types of behavioral maladjustments in order that he/she may have a basis in determining behavioral maladjustments that need the attention of competent specialists. It is therefore necessary, on a serious note, that public awareness on the nature of mental illness on a scope such as that of the course taken by the suicide bombers, coupled with detection of signs and symptoms by neighboring homes and those in the community, help diminish the threat. There are of course other paths or strategies to follow, but why not take all that is available to ensure our security (Kolb et al, 1974). References: 1. CNN, Breaking News, October 18, 2007. www.cnn.com 2. Gibbs, Nancy. 1995. â€Å"EQ Factor† Time International, October. 3. Gordon, Harvey, Mike Kingham, Tony Goodwin. Air travel by passengers with mental disorder. Psychiatric Bulletin (2004) 28:295-297. The Royal College of Psychiatrists. 4. Jourad, Sydney, 1963. Personal Adjustment. 2nd Ed. New York: MacMillan Company. 5. Kolb, David Ralph K. Schwitzgebel. 1974. Changing Human Behavior: Principles of Planned Intervention. New York: McGraw-Hill Book Company. 6. McCllelland, David C. R.S. Steele. 1973. Human Motivation: A Book of Readings. Morristown, New Jersey, General Learning Press. 7. Menninger, Karl in Taylor, David, 2003. The concept of mental health in children. European Child Adolescent Psychiatry. Steinkopff. Volume 12, Number 3. Pp.107-113. 8. Miller, W. B. Zarcone, V. (1968) Psychiatric behaviour disorders at an international airport. Archives of Environmental Health, 17, 360 -365. 9. Silke, A. (2003). The psychology of suicide terrorism. In Terrorists, Victims and Society (ed. A. Silke), pp. 93 -108. Chichester: Wiley. 10. Tiffin, Joseph and Ernest McCormick J. 1958. Industrial psychology. Englewood Cliffs, New Jersey: Prentice Hall, Inc.