Earthquake resistance design

Columns can sustain two types of Damage, namely axial- flexural (or combined compression bending) Failure and shear failure. Shear damage is brittle and must be avoided in columns as by providing transverse ties at close spacing which carry the horizontal shear forces and hold concrete and vertical bars together. Horizontal Bands and its Role: Horizontal bands are the most important Earthquake-resistant feature in masonry buildings, since it holds a masonry building as a Single unit by tying all the walls together. There are four types of bands in a typical Masonry building, namely gable band, roof band, lintel band and plinth band. Lintel band is the most Important of all, since it ties the walls together and also breaks the monotonous continuity of wall.The gable band is employed only in Buildings with pitched or sloped roofs. In buildings with flat R. C or reinforced brick roofs, the Roof band is not required. In buildings with pitched r sloped roof, the Roof band is very importan t. Plinth bands are primarily used where uneven settlement of foundation in soil undergoes bending and pulling actions. It will be better to use ARC bands Shear Wall: Reinforced concrete buildings often have vertical plate-like ARC walls called Shear Walls. These walls generally start at foundation level and are contain souse throughout the building height. Their thickness varies from mm to mm. Shear walls are usually provided along both length and width of buildings.Shear Core Shear walls are like vertically-oriented wide beams that carry earthquake odds downwards to the foundation. Just like reinforced concrete (ARC) beams and columns, ARC 6 shear walls also perform much better if designed to be ductile.. Shear walls, if provide around the elevator core or stair well is known as shear core. Boundary Elements: Under the large overturning effects caused by horizontal earthquake forces, edges of shear walls experience high compressive and tensile stresses. To ensure that shear walls behave in a ductile way, concrete in the wall end regions must be reinforced in a special manner to sustain these load reversals without loosing strength.End regions of a wall with increased infotainment are called boundary elements which have high bending strength. Boundary Elements (Design, Location) Short and Long Columns: During past earthquakes, reinforced concrete (ARC) frame buildings that have columns of different heights within one storey, suffered more damage in the shorter columns as compared to taller columns in the same storey. Short Column Behavior: Poor behavior of short columns is due to the fact that in an earthquake, a tall column and a short column of same cross-section move horizontally by same amount. However, the short column is stiffer as compared to the tall column, ND it attracts larger earthquake force. Therefore it cause X-shaped cracks.Short Column (Failure, Location with Mezzanine floor) Stiffness of a column means resistance to deformation -? the larger is the stiffness, larger is the force required to deform it. This behavior is called Short Column Effect. Design Phenomenon: 7 If it is not possible to avoid short columns, this effect must be addressed in structural design. As per Indian Standard the reinforcement must extend beyond the short column into the columns vertically above. In case of stone or brick masonry the width has to be increased accordingly for short column. BEAM COLUMN JOINT: The points where the beams and columns intersect is a beam column joint. Since they too made of same material we can't expect to have more strength. So have to take care on these unavoidable joints.During earthquake the upper bars and lower bars act in a different direction causing elongation or damage of joint. Design Strategy: In design practice large column size, having large closed loops are placed inside. These should follow some design specification. Normally we will go for the anchoring of the bars at the ends. Micro concreting can b e gone in the congested junction. Beam Column Joint (Location, Failure without proper anchorage) Hidden Beams: These are also called as concealed beams which have their depth equal to that of the slab. These can be provided either on longer or on the shorter span. When provided along longer span it is found that the load carrying capacity increase to 135% with an economical increase of just 0. 4 -? 0. 5%.These beams are designed for negative bending moment which is caused due to load reversal expected during earthquake. 8 Hidden Beam Plastic Hinge: As moment increases, the linear stress distribution form persists and the extreme fiber stress reaches the yield stress value. Further increase in the bending moment cannot produce any increased fiber-stress but causes yield to spread into the inner fibers. As the bending moment Increases more and more fibers reach the yield stress until the final state, the whole of the section will yield. The complete yielding across the section of a be am is termed as plastic hinge. The section now carries the maximum bending moment without strain hardening taking place. The beam can carry no further load.Any further load will only result in increased deflection. The beam will behave as if t is hinged at the plastic section and a condition of collapse has been reached. Reduced Beam Section: This is a section of beam which is provided along the length of steel beams. These will have their area of cross section lesser than the proceeding section to an extent that it will just act as a plastic hinge. In case of steel section also a circular arc will be cut in the required flange portion of span. Reduced Beam Section Pre tensioning Technique: In case Of domes and shell Structures, the lateral thrust experienced will be more. This fault is answered well by pre tensioned concrete.In case of huge trustees like nuclear 9 rectors, large spanning domes we will be having a thin walled cylindrical tube of diameter about 10 to 15 CM and steel rods will be packed tightly. Pre tension elements (After & Before Concreting) Then stressing will be done as per design and then the micro concrete is injected in pressure into the tube. This setup is then done with normal concreting. It will resist the lateral thrust in an effective manner. Techniques to Adopt on Sky Scrappers: While speaking about large multistoried buildings we can't simply go in for normal strengthening of beams, columns, and other structural elements. There we had an alternative to speak about some elements such as Bearing, Bracing, Friction pendulum and Dampers which are primarily meant to take Vibration produced by lateral force.Rubber Bearings: Rubber bearings are made from layers Of rubber with thin steel plates between them, and a thick steel plate on the top and bottom. The bearings are placed between the bottom of a building and its foundation . The bearings are designed to be very stiff and strong for vertical load to carry the weight of the building an d designed to be much weaker for horizontal loads, so that they can move sideways due to lateral thrust. Rubber Bearing Viscous Dampers Viscous Dampers: Viscous fluid dampers are meant as shock absorbers. They consist of a closed cylinder containing a viscous fluid and a piston having small holes in its head. As the 10 piston move in and out of the cylinder oil is forced in and out causing friction.The damper is usually installed as part of a building's bracing system using single diagonals. As the building sways to and fro, the piston is forced In and out of the cylinder. Friction Dampers: Friction dampers are designed to have moving parts that will slide over each other. The damper is made up from a set Of steel plates, with slotted holes in hem, and they are bolted together. At high enough forces, the plates can slide over each other creating friction causing energy dissipation. The plates are specially treated to increase the friction between them. Friction Dampers Cross Bearing s (In foundation) Cross Bracing: These are very common in case of vertical load distribution.But we can also adopt this technique to foundation, in which the entire building will be laid in a cross horizontal bracing rather than placing it directly on foundation. It will distribute the load to joints and through foundation finally. Friction bearing (Location, Appearance) 11 Friction Pendulum: Considering about the large multistory buildings, we can always expect some appreciable movement in it base due to the vibration. Instead to resist against it completely we can allow the structure to deform at its foundation level by provision of friction pendulum without damaging the structural integrity.

International law

The following essay is divided into the following sections: Introduction Definitions Positivism Realism International law Conclusion List of works cited Law is a concept of governance that involves the stipulation and establishment of rules and regulations that are enforced to shape politics, economics, and society. It is put in place by various governmental institutions to govern a community. Law moderates our day-to-day lives with regards to human relationships.It has various oncepts to it; company law, property law, trust law, criminal law, constitutional law, administrative law, international law, and civil law. The study of law allows for review and revision of these rules and regulations ensuring that none is faulty or biased in any manner to a single party of the human population. Definitions The above mentioned concepts are in light of the various activities we indulge in. Contract law deals with regulation of trade terms relating to establishments of contracts.Property law d eals in ownership rights and ownership transfers of personal property. It is often called Chattel law. We can say that Trust law applies to assets that are secured for financial reasons. A concept of law that was not mentioned previously in the introduction part is Tort law. This law enables one to apply for compensation in the case of loss of or damage of personal property (Byers 22). Criminal law establishes the way and reasons for perpetrator prosecution.Constitutional law protects the human rights as well as providing the legal framework for the governance of a state, and its laws. Administrative law presents governmental policies after they have been reviewed by governmental agencies, while international aw controls and manages interstates sovereign decisions in trade and military action regulations (Wallace 198). The law forms a ground on which all mankind is considered equal, and offers Justice systems in equal proportions to every citizen. The three main arms of government a re responsible for creating and enforcing legal systems of a state.These three are the executive, the Judiciary, and the legislature Positivism This legal term, if applied in the context of international relation, asserts that each nation remains bound by the specific international laws it deems fit to undertake as art of its governing criteria, but otherwise, it would be free to act accordingly as it wishes were it not for those laws. It continues to clash in idealism with the assertions of realism and natural law till today (Kelsen 310). Its sociological rationale is that, sensible knowledge is derived from authentic sources like facts, experience, and positive verification.It suggests that law is based primarily on the command of the ruler. †°mile Durkheim redefined Sociological positivism. Later sociologists found it conflicting with their beliefs and came up with the Anti-positivism concept. Karl Popper and Thomas Kuhn led to the development of post-positivism. The stipula tion of positivism developed as conflict continued to abound the topic questioning the existence of higher norms of international relations that constrict the freedom of sovereign states (Dixon 341).In the study of legal systems, positivism can be taken to establishment of international law is entirely dependent on natural law, it becomes apparent that positivism and international law come to a conflict on some level (Armstrong 71). Realism This theory is based on the argument that, since all laws are made by human beings, or human beings, then it is subject to human error. On the context of international relations, we can interpret this to imply that in order for a realist to conquer, he must put aside all feelings of morality and friendship, and concentrate on building power on his part.In the context of international law, we can say that it is an act out of selfish interests (Oppenheim 123). Its general rationale is achieving a nation's goal without regard of the other nations. T his prevents the nation from being vulnerable from other ruthless adversaries. Therefore, since war and conflict arise often etween countries, a country should try gain an advantage over the others to make it stronger. Realists dismiss the significance of law in international relations because they believe there is no need to regard an issue that will limit your influence as a leader among your subjects.International law These are the rules and regulations put in place to govern international relations between any two participants or nations. This institution maintains order and legal privileges in the international community. It consists of treaties and long-lasting agreements that primarily concern nations and provinces, rather than private itizens. Some of the rulings made in international cases determine the ruling of other nations in the same premise. This way it can form resolutions between regions globally, ensuring that equal Justice is offered for the wrong-doing of an offe nse previously encountered.International law helps maintain countries in peaceful relations with each other, trying to avoid the outbreak of a war where innocent lives might be lost or destroyed (Shaw 77-79). It only falls short in execution of its enforcement strategies, seeing that the enforcement program is young as well as underdeveloped. The issue only gets more complicated considering the sovereignty and independence of the member countries. No nation would subject itself to legal punishment knowing well that it can avoid participation of the legal program and act as it wishes.It would be binding itself in laws it has helped establish. In this premise, it suggests that positivism disregards the rule of international law (Salli Swartz 112). Realism remains a very important aspect of influential magnitude in colleges that study legal systems. Legal realism teaches political science as a social science and in udicial studies as a specialized discipline. Legal bodies that govern i nternational relations seek to maintain harmony and peace among member countries while trying to prevent possible conflict between two nations regardless of their membership.It requires that the international laws stipulated be considered into the national Justice system to prevent any nation from conflicting with others. Conclusion International law demands that participating countries partake of its Justice systems. Realism asserts that only when a country chooses to bind itself with these rules can it e party to international legal punishment. Positivism asserts that a country can choose to place its needs first before the interests of other countries (Barker 71-72).In this sense the two legal premises conflict in ideology. However, international law demands that democratic states adopt international law into their internal legal law is left to its own discretion (Reus-Smit 101). It only demands that the nation ultimately conforms to the laws. It also insists that regardless of w hat a nation's internal laws dictate, it cannot take them as an excuse to not comply with nternational agreements as stipulated by international bodies like the United Nations.

Government Contract Warranties Essay Example | Topics and Well Written Essays - 1750 words

Government Contract Warranties - Essay Example (Worthington; Goldsman, 363) The prime objective of warranty in a Government Contract are to demarcate the privileges and obligations of the contractor and the Government for defective goods and services and to promote quality functioning of the product. Normally, a warranty is required to provide a contractual right for the rectification of errors with regard to acceptance of the supplies or services by the Government. Besides, the cost of warranty should not outweigh the expected benefits to be derived out of it. It order to make it easier the pricing and enforcement of warranties, the contracting officer is required to specify in the terms and conditions of warranty the scope of privileges and obligations of the contractors; the prescribed remedies in case of violation of the condition of warranty; the duration of the warranty; time limit for notification of the discovery of defects. Besides the consistency of the warranty clauses are also to be verified. (Subpart 46.7- Warranties) It is common that the words 'warranty' and 'guarantee' are used in such contracts interchangeably. The origin of both the terms has been traced to the same concept, which indicates 'to guard'. Both the terms are similar since both indicate a bunch of obligations to be fulfilled by the provider as a component of the purchase contract, or imposed on the provider legally. Warranties have been categorized as express and implied warranties. The express warranties indicate the assurances to provide necessary after sale follow up to the product either in writing or orally. Express warranty indicates a particular statement of fact or a promise. Contrary to this the person assuring warranty-the warrantor-never expresses the implied warranties. In some type of contracts such warranties flow automatically and implied by the law. (Chapter Eight: Guard Duty-Warranties) Primarily the implied warranties are of two kinds such as implied warranty of merchantability and the implied warranty of fitness for a specific purpose. The implied warranty of merchantability indicates that while selling a product, being an esteemed seller, it is legally implied that the item is sufficient and complete for the objective for which it is obtained by way of purchase or lease. However, the implied warranty of merchantability is applicable only when the seller is in the business and dealing with the item under question. The implied warranty of fitness for a particular objective is another kind of implied warranty that indicates that any seller is assumed to assure that the products sold is suitable for the specific purpose for which it is being sold, when the buyer discloses the purpose, and the seller feels that the buyer is dependent upon him in choosing a suitable item to fit his purpose. (Chapter Eight: Guard Duty-Warranties) In case of Government Contracts the warranty terms are mostly written, so as to fall under the category of express warranty. The express warranty generally concerned with the quality of products so as to assure whether they perform the desired function or cater to the particular specifications, if they are suitable for the intended purpose for which they are obtained; the period up to which the manufacture is obliged to repair or replace the components and the relevant terms with regard to this, etc. The warranty may also deal with the ownership of goods-whether the ownership lies with the seller or transferred legally to the

(STEADY STATE MODEL AND PERFORMANCE) of SINGLE-PHASE INDUCTION Thesis

(STEADY STATE MODEL AND PERFORMANCE) of SINGLE-PHASE INDUCTION GENERATORS OF EQUIVALENT CIRCUIT - Thesis Example The single phase induction generator has become one of the devices in consideration to achieve this goal it was explored with a view of bringing cost effective small power generator acceptable to the users. The induction generator is considered more advantageous as compared to the synchronous generator. It has the following advantages: rugged in construction, low maintenance and operational cost, self protection against fault, good dynamic fault, capable of generating power at varying speed and do not need brushes and commentators. The self excited induction motor uses turbines (steam, water and wind) as the prime mover to produce power. The prime mover rotates the rotor windings thereby causing it to cut the magnetic flux induced by the excitation windings connected to an external power source. The end of stator main windings is taken and connected to the required load. The induction generator only operates when there is the slip that is the rotor should rotate at a speed greater th an synchronous speed of the stator magnetic flux. The self excited single phase induction generator structure consist of the rotor (rotor windings) and stator (has both the main and exciting windings).The rotor shaft is connected to the prime mover while one end terminals of stator main windings has provision for load connection. The main winding has a series connected capacitor that regulates voltage output and provide power of the connected load. With no load connected to the main winding the generator after self-excitation run at desired speed and produces certain no-load voltage which can only be changed by varying the self-excitation capacitor accordingly. Connection of the load leads to drastic drop of terminal voltage due to increased reactive power VAR. To maintain the terminal voltage, capacitor value in the series with the load is increased to counter for the

The health effects of cannabis marijuana Essay Example | Topics and Well Written Essays - 250 words

The health effects of cannabis marijuana - Essay Example This damage is similar in severity to the damage of those who suffer from lung cancer (Zimmer & Morgan, 2007, p. 20). The mildest respiratory effects of the consumption of marijuana include bronchitis, exacerbated phlegm production as well as emphysema. A study revealed that 36% of patients admitted to the hospital in the United States with flue-like symptoms were suffering from the side effects of consuming marijuana (Tashkin et al., 2004, p. 2). Moreover, in severe cases, heavy marijuana users may develop lethal complications. Hence, a massive Swedish study in 2013 has identified that 40 years of marijuana consumption double the risk of having lung cancer (Callaghan et al., 2013, pp. 1811-1820). Moreover, has a disastrous effect on cardiovascular system. Therefore, marijuana accelerates heartbeat and may provoke inflammatory processes in blood vessels. Moreover, a group of researchers from Birmingham, UK, has concluded that marijuana is likely to increase the risk of arrhythmias as well as causes dizziness and provokes falls (Krishnamoorthy et al., 2009, pp. 851-856). Furthermore, due to ethical concerns, the studies aimed to investigate the relationship between the consumption of marijuana and reproduction. The studies conducted on primates revealed that with the chronic consumption of marijuana sperm count decreased by a margin of 61% in males. Fertility in females decreased by up to 53%. Moreover, even with the surviving sperm cells their motility and ability to fertilize egg cells was significantly degraded (Zimmerman & Raj, 2007, p. 10). Krishnamoorthy, S., Lip, G., & Lane, D. (2009). Alcohol and Illicit Drug Use as Precipitants of Atrial Fibrillation in Young Adults: A Case Series and Literature Review.  The American Journal of Medicine,  122(9), 851-856. Zimmerman, S. & Raj, A. Y. (2007). Effects of cannabinoids on spremtogenesis in mice. In G. G. Nahas and W. D. M. Paton

See Below Assignment Example | Topics and Well Written Essays - 250 words

See Below - Assignment Example The world expected match to end the debate for good. The match broadcasted live from the Astrodome, to as many as thirty-six countries. During the match, King dominated the net, making Riggs run around the baseline. Billie King defeated Bobby Riggs in a stunning 6-4, 6-3, 6-3 straight sets win, in a match lasting two hours and four minutes, to prove that she was the most talented and gifted layer in contemporary tennis. On winning the match, Billie King flung her racquet in the air, and hugged her husband, who lifted her to the crowd’s applause. During her winner’s press conference, she touched on advice receive from Margaret Court, who had earlier lost heavily to Riggs (Roberts 10). Billie Jean King thus became the first woman to win a $100,000 prize in athletics. She paid tribute to her coach, Dennis van de Meer, by touching her tongue. In order to ease herself for her famous press conference, she walked barefoot after taking her blue sneakers off. The tennis match we nt down in history as the battle of the sexes, with credit for women’s equal share of sport money going to Billie Jean King, and her famous

Gender Bias In Coaching Research Paper Example | Topics and Well Written Essays - 2500 words

Gender Bias In Coaching - Research Paper Example And there are generalizations. â€Å"Females don’t make good coaches† is one of those generalizations. Because there are not enough coaches in sports, it is generally taken that women are not good coaches. The common perception and the common language create a gender bias for women coaches. People are still not treated equal, same with women, and more with women coaches, no matter what kind of sports. Men have this stereotypical bias that they are stronger than women, physically and mentally. All this is grounded in men’s belief systems, that is why it is very difficult to be a coach, even though the male coach is for a feminine sport. We have been living in a patriarchal society since the beginning of time. It has always been that way and, perhaps, may not change rapidly – the way society will deal with women and women coaches and the way people consider gender. What is perceived is different – or the opposite – as compared to what is writte n; the law is not always followed, but what people think is what is being observed and done. And what is right – that men are far more superior than women and that they should have more in law and in benefits? Person (2010) says that there is the traditional wisdom that women are only for feminine sports like gymnastics or cheerleading and that they should not engage in ‘high physical contact’ sports and activities. A law was passed in 1972, known as Title IX of the Educational Amendments, which granted women rights to play in all sports. Title IX protects the rights of students and employees from discrimination based on gender. Person (2010) indicated that while Title IX provides equal opportunity for women in sports, it does not provide equal opportunity in specific sports. For example, while there is no women equivalent for American football, women are provided options to consider other sports like volleyball or hockey which, according to Person, does not mean equality as ‘options do not mean equal’. Women coaches for feminine sports are also discriminated. Another stereotyping is that female coaches are lesbians. This is clear gender bias. There are even some women who think that way. So, it is no surprise that men have that perception and feeling. People look at the outside appearance and not the qualities of the job the person has been hired. Since the woman coach is seen that way, it would be hard for administrators and supervisors to give them benefits or raise their salaries. B. Men coaches are paid higher than women coaches If people were given the chance of evading the truth or playing with the law, they would do this in artistic and creative ways. I thought that, as regards the university and the students’ sports world, people should be concerned of improving their skills and pursuing excellence in their talents. But later I realized, after reading about women and equality, that there’s much to be done aside from pursuing excellence. Laws promoting equality have been perfected, but their implementation has been ignored. Despite the provision of Title IX for equality between men and women coaches, the fact remains that men coaches are paid much more than women. According to Tyler (2012), schools and universities tried to play it around Title IX by showing that the pay for coaches of women’

A letter to the editor Essay Example | Topics and Well Written Essays - 250 words - 1

A letter to the editor - Essay Example Although this has worked for the United Kingdom, the author of the article has presumed that it could also work in all the other developed countries. However, he has overlooked the fact that each country has its own distinct economic system, thus some economic strategies in one country might not be successful or apply in another country. In addition, the link between economic growth and deficit reduction, which the author’s argument base on, is disputed. When government spending reduces, as the author suggests, this does not guarantee that there will be economic growth due to the result of a reduced deficit. In some cases, reduced government spending might slow down economic growth, as the government cuts on spending on various goods and services. This might directly result in a contraction in the economy, and consequently a decline in public-sector employment, which will restrain economic growth or recovery. However, it is agreeable, as the author puts it, that the government should highly invest in areas such as education and infrastructure. To a greater extent, such investments by the government might lead to more employment opportunities and result in skilled workforce. For this reason therefore, the author should have considered suggesting a moderated cut on government spending, as extreme cut on government spending might have detrimental effects on the economy of the present and future

Organizations and Management Case Study Example | Topics and Well Written Essays - 750 words

Organizations and Management - Case Study Example Some employees avoid interacting with members of other cultures/ethnicities and/or view them as "undesirable" staff. This case vividly portrays that interpersonal communication employed by the CEO is ineffective and inefficient caused by different values and traditions of people, and poor interaction between all employees. For instance, the CEO and Western employees have different perception and understanding of the "family" concept of organizational culture but the CEO is unable to recognize these difficulties and problems experienced by the subordinates. The "western" are perceived as impolite and disruptive because of different communication n corms and traditions which have not been communicated and explained to Westerns people by the CEO (Wood, 2003). 2. The case study vividly portrays the important role of CEO and his vision in organizational culture. Communication should be seen as a process by which knowledge that resides in one or more people comes to be represented in one or more others. Certainly the transfer of knowledge is not the only thing that happens in communication, and for certain purposes it may not be the most useful way of thinking about the process. Below we refer briefly to some other dimensions of communication that may be important for cooperative work. Underlying the knowledge transfer view of communication is the assumption that any communicative act rests on a base of mutual knowledge (West and Turner 2006). The example of Mainland Enterprises reveals a set of mechanisms derives from the fact that individuals can often be assigned to social categories, and such category membership often predicts individual knowledge. Of course, category membership is not a perfect predictor of knowledge. Conversation (and similar interactive forms) permits communicators to formulate messages that are tightly linked to the immediate knowledge and perspectives of the individual participants, because it affords the participants moment-to-moment information on each others' understanding. Such information permits the formulation of messages that are extremely efficient because they are based on a reasonably precise assessment of the hearer's current knowledge and understanding. The distinction between self and other is rather a rudimentary one, but it can be shown that the Western employees differentiate between message recipients (Knapp and Vangelisti 2004). The problem of misperception and misunderstanding is caused by patriarchal and autocratic management style of the CEO. he does not permit freedom of choice trying to control decision-making and problem-solving within the company. These causes provide stronger support for the common ground hypothesis than the relatively narrow margin of difference between the friend and stranger conditions would lead one to conclude, because the experimental situation was one that would minimize the likelihood of finding such differences. This situation proves that in communicating with "friends" and "family", employees are likely to have direct and detailed knowledge of the information

Stock Markets Essay Example | Topics and Well Written Essays - 1500 words

Stock Markets - Essay Example Hypothesis being the Greek word for "assumption", the Efficient Markets Hypothesis therefore assumes that capital markets, of which the stock or equity market is one, is efficient. And what we mean when we say that a market is efficient is that buyers and sellers of stocks have all the relevant information they need to make an intelligent decision to either buy or sell stocks in companies at a certain price that reflects all available information. The first to propose the hypothesis is Eugene Fama of the University of Chicago in a paper (1970) where he presented a method of testing the efficiency of the New York Stock Exchange. Since then, hundreds of studies have been conducted to either prove or disprove the hypothesis. Since we know that in science, a scientific hypothesis that survives experimental testing becomes a scientific theory, the fact that the efficiency of markets remains a hypothesis begs the question: why Do test results thus far show that capital markets are inefficient because scientific investigation has not proven otherwise Or, if capital markets are efficient, and stock prices reflect all available information, then why is the trade on mere pieces of paper (called stocks) growing Is it a case of altruistic holders of stocks, seeing the potential for future earnings, selling these stocks to others in order to share the wealth Or are all sellers of stocks just looking for another fool to unload a worthless piece of paper And why do people still make (and lose) money in the stock market And if capital markets are efficient, are all investing decisions intelligent and based on complete information As we will show, capital market efficiency does not necessarily mean an increase in the intelligence quotient of all investors. Power of Information in Capital Markets Today Capital markets have the advantage of getting buyers and sellers to agree on a deal without the use of financial intermediaries like banks and insurance companies who direct the flow of resources from savers to borrowers. Capital market transactions are therefore deemed more efficient in the absence of intermediaries except for brokers who put buyers and sellers together and get a small commission for the effort, making the deal almost frictionless. This is one factor that leads to our hypothesis: the low transaction costs of capital markets enhance its efficiency. With transaction costs negligible, the only real factor that determines the current price of a stock should be the net present value of its future cash flows in the form of dividends and, assuming the company lasts long enough, capital gains when the stock is sold at a future date. After all, a stock is nothing else but a claim to a company's future cash flows. A company's cash flow is affected by several factors, among which are its business prospects, management quality and strategic plans, the economy's over-all performance, and the company's standing within the economy. If all these pieces of information are known, making a study of free

Use of Visual Aides in the Modern Classroom Essay Example for Free

Use of Visual Aides in the Modern Classroom Essay Visual aides have become important to the learning processes of children in all grades of school. From simple skits to enhanced computer calculations and comparisons, teachers everywhere are learning the power of having their students visualize and take part in what they are expected to learn. This process is a great departure from the classic learning model of reading along and taking notes, so it takes some teachers and faculty a while to accept and learn new styles of teaching. The three articles that I have chosen show the value of visual aides in the classroom, but also note the difficulties of changing long held educational beliefs. â€Å"You Gotta Have Art! †, by Roger Glass and Priscilla Nemeth, describes the impact of visual learning in classes around the United States. For example, in order to visualize â€Å"natural environments found in Florida†, students were prompted to paint a mural on a school wall showing what they had learned in their science class. The mural was a way to learn as well as a point of pride to the children who helped create it (Glass Nemeth, 2003, para. 5). Other schools use â€Å"a print of the city† to teach local history and geography, instead of simply using a plain map. The print allows children to see the buildings and sites that they discuss in class, rather than just have the areas pointed out to them on a basic city map that includes only streets and symbols (Glass Nemeth, 2003, para. 3). The results have been more than anyone could have expected. Attendance and discipline have improved in the schools that promote visuals in the classroom, and scores on standardized tests have risen dramatically (Glass and Nemeth, 2003, para. 2). It is apparent from this article that allowing children to see what is special about a subject, and also take part in projects that they can be proud of, encourages them to come to school interested and ready to learn. â€Å"Talking Science, Modeling Scientists†, by Elizabeth Edmondson, William H. Leonard, Chris Peters, and Anna O. Baldwin, describes a program in place in South Carolina schools that lets the students learn visually in class and then share the knowledge with students in other schools who are learning the same lesson. Students were taught a science unit on electric circuits by such means as â€Å"lighting a bulb with a battery, bulb, and wire, constructing a flashlight using a series or parallel circuit and switch, and designing and wiring a simple cardboard house† (Edmondson, et al. , 2006, p. 29). The learning did not stop there. Students learned to write about what they had visually learned, and then shared the information with student partners over a special system. (Edmondson, et al. , 2006, p. 30). This system allowed students from each school to post questions and answers to each other by means of a dedicated message board (Edmondson, et al, 2006, p. 30). Students were encouraged to â€Å"buddy up† and work on projects together (Edmondson, et al, 2006, p. 30). Also, those having trouble learning were paired with those who had a mastery of the subject, so long distance peer tutoring occurred as well (Edmondson, et al, 2006, pg. 31). Teachers reported that this system of visual and hands on learning much improved the students’ comprehension levels and incidently improved their writing skills due to the reports that they posted (Edmondson, et al. , 2006, p. 31-32). This project not only serves as an interest to children who easily catch on to the lesson, but it also gives them a chance to help fellow students who are struggling. Achievement is possible for all with this method, and it would be especially productive if a â€Å"richer† school district paired up with one that did not have the same luxuries. â€Å"Meet Mr. Shannon†, by Kristin Kearns Jordan, gives a viewpoint from a school in New York that struggles to add visual learning methods to their curriculum. The person in the title, Mr. Frederick Shannon, is considered a â€Å"master teacher† with his own manner of instruction called the â€Å"Shannon Plan† (Jordan, 2003, para. 2). He has used this method of primarily visual learning for twenty-five years, and he helps new teachers put it into place (Jordan, 2003, para. 2). For example, one teacher has picked up the habit of having a student dress as a â€Å"hamburger† to illustrate how a paragraph should be written. The â€Å"bun† simulates a strong opening and closing sentence, and the â€Å"meat† simulates the important information that should be given within the paragraph. She also uses â€Å"hand signals† to teach the components of a plot (Jordan, 2003, para. 4). Unfortunately, this school is plagued by regulations that cause the teachers to have to take classes on theory, which makes them not have time for special learning techniques (Jordan, 2003, para. 56). In this school, visual learning has to fall by the wayside. Considering that children now have to pass competency tests to move to the next grade, and seniors have to pass a graduation exam to receive a diploma, there is often little chance for teachers to vary from the standard program in their classes. It is little wonder that children with no chance for variation from the basic lessons tend to dislike school All three of these articles contain teachers who are ready and willing to use visual learning techniques, but some are much more lucky than others. Consider the South Carolina schools that have an expensive, state of the art visual program, and then think of the New York schools that are so bound in regulation that they can barely manage to fit a few skits in their lessons. Most schools will fall in the middle ground of using art and pictures as visual aides. In every case, though, visual elements enhanced the learning process, which should prove to even the most doubtful person that taking time for special types of learning enhances the educational experience. Notes and readings are not the only way to learn, and our nation’s educational system needs to bear that fact in mind if we are going to produce top caliber graduates.

Lenin in accounting for Stalins defeat of his opponents in the years 1924-1929 Essay Example for Free

Lenin in accounting for Stalins defeat of his opponents in the years 1924-1929 Essay How significant were the personalities of the contenders to succeed Lenin in accounting for Stalin’s defeat of his opponents in the years 1924-1929 Stalin, throughout the fierce fight for power exploited his attributes to the best of his ability, however his tactics were not the only factor in his eventual success. Perhaps what’s more interesting is the systematic fails, one by one of all of his contenders – which was due to their individual personalities. Many argue this is the more significant reason for Stalin’s rise to power, and that if this had have been changed Stalin’s success would have been entirely different. Stalin’s opponents, understandably had very different personalities. However looking in hindsight none of them seem to create a difficult situation for Stalin. This could be due to Stalin’s natural ability to change and use his opponents strengths and weaknesses, or perhaps the general naivety of many in the politburo. One main example of this is Trotsky, and his rather egotistic and arrogant personality. This intern made people weary of his power, and made him completely oversee Stalin as a contender for power. Lenin in his testament says himself he is â€Å"not sure whether he will always be capable of using that authority with sufficient caution† and the politburo completely over saw this cautious remark for their own reputation. The evidence seems to suggest members of the Bolshevik party didn’t use their personality’s to the best if their potential. Furthermore Trotsky seemed very trivial about the whole situation. In 1924 he didn’t make Lenin’s funeral, eventually blaming that on Stalin. In the successive years after he didn’t make important politburo meetings and refused to make alliances. In 1926 he did eventually see light forming the ‘united opposition’ however by then it was too late and Stalin’s fan base was too large in the central commission. Another example of this is how Bukharin in 1925 decided to stay strictly to the Bolshevik rules. This perhaps shows how good a man he is, but not how good a politician he is. In that situation he has seen his fellow socialist members being taken over by Stalin, but does very little to stop this. Furthermore he says himself Stalin is â€Å"an unprincipled intriguer who subordinates everything for his appetite for power† The evidence here suggests he saw the dilemma, but does very little about it. In hindsight we now know he allowed Stalin to use his powerbase for his own political marketing. This shows the true naivety of Bukharin and how Stalin’s personality completely overshadowed anybody else’s in the politburo. Moreover this shows how truly significant the personalities of every one of Stalin’s contenders were, in allowing and creating a path for Stalin to walk to power. Perhaps if other people in the politburo were willing to play underhand tactics like Stalin, the end would have been different. In retrospect we can see personalities might not be a main factor – perhaps the individual ideologies played a larger role, but it’s the way people acted towards Stalin, completely overshadowing him that makes personalities so significant. Other peoples personalities did play a vital role, but now in stark contrast we begin looking at Stalin’s personality strengths, and how he uses them to the best of his ability. He, from the very beginning was a yes man following Lenin till the very end. However one major strength that Lenin foresaw was Stalin’s ability to challenge his thoughts and ideologies. Stalin from the very beginning has a very strong personality (Lenin) and this was used this in the July days (a troubled time for the Bolshevik party) when Lenin needed this unique quality from him. Arguably this is Stalin’s biggest asset. Furthermore Stalin’s ability to change tactics and ideologies, particularly in the later stage of the power struggle was, down to an incredibly versatile personality. Moreover his ability to look into the future and plan his actions to aid his accent was stunning, as if he planned every move meticulously and almost in hindsight. Looking at the evidence, Stalinâ₠¬â„¢s personality was vital in his accent, but perhaps if the others had been different the overall outcome would have drastically changed. Personalities were vital in the success and failures of the struggle, however Stalin’s under hand tactics played an equally important role. Before and during the 5 year struggle he implemented many tactics to undermine his opponents, and one by one remove them from the possibility of power. Lenin saw this in his final years, and discussed it in his testament, however Stalin persuaded Kamenev and Zinoviev to fight his side, and intern keep his job. Furthermore his ability to switch ideologies and allies is a testament to his versatile personality. An example of this is in the later stages of the struggle, when only him and Bukharin were left for the job. Stalin suddenly rejected NEP because it was failing and turned radically left. This sudden maneuver allowed left wing supporters and nationalist war communists to support him, as well as gaining the support of anti NEP politicians. In all this he managed to leave Bukharin to pick up the pieces of NEP. Furthermore Stalin re introduced grain requisitioning in early 1928 to make sure NEP was a complete fail. Its these quite brilliant tactics that formulate into a plan that make Stalin truly versatile and incredibly shrewd and devious. In everything Stalin did there always seemed to be a very formulated plan, and in this was surrounded by brilliant political tactics. However these tactics were merely ways of getting rid of political opponents, and due to personalities as whole, arguably tactics are not as important as other factors. Alternatively the power bases’ of other opponents could be as significant as personality in the war struggle for power, and the defeat of all his opponents. All Stalin’s opponents had important roles within the Bolshevik party, and in many ways – more significant roles than Stalin. One in particular is Trotsky. Head of the Red army, and an incredibly influential role within the Politburo. Lenin says himself â€Å"personally he is, to be sure, the most able man in the present Central Committee† His power base is remarkable, with huge amounts of Kudu’s within the Bolshevik party. However arguably as well as him being too â€Å"self-confident† Stalin used this wealth of power base to his advantage by forming the Triumvirate with Zinoviev and Kamenev. When we turn to other members such as Bukharin, we see that generally their powerbases, although more significant for policy making were not as useful for gaining power as Stalin’s, and perh aps this was a significant reason for their in individual defeat. Stalin’s role within the party was General secretary and head of enrolment and promotions. This involved the inner workings of the Party. The evidence indicates that Stalin used his role, from 1922 to strengthen his fan base within the party and Central committee, which later in 1925/26 seemed to secure his position within the party, in 1923 it was up to 30%, and steadily rising. This seems to indicate his role and power base far out saw anyone else’s within the party, and that actually he was in the perfect position to take up power, even foreseeing this in 1924 – by controlling what Lenin saw from the politburo, and vice versa. Stalin took up a highly administrative role, and this worked in his advantage, however the evidence suggests that if other factors were stronger, such as opposition personalities that Stalin still wouldn’t have made it to power. Arguably in this light personalities seem more significant. Ideologies of the opposition and Stalin play of key significance in how arguments were won and lost. For example, Trotsky stayed far left with all his ideologies – perhaps in a more noble way than Stalin, and eventually he was engulfed by Stalin’s devious tactics. Another example would be Zinoviev and Kamenev, in the triumvirate staying right of the spectrum. However when they rejoin to form the left and united opposition – they lose huge respect for changing ideologies within the party. Interestingly this seems like an incredibly vital point – leading onto Stalin’s ideological viewpoints. Throughout the start of the political struggle, he sways right – but doesn’t involve himself in any main arguments about, for example rapid industrialisation. This tactic to stay the middle man has its disadvantages. For example he is described by members of the Bolshevik party as ‘a grey blur’. However it also has its advantages. Stalin was then able to sway from his very Right views within communism – to left views with not much notice – he was able to move ideologies to strengthen his fan base and his viewpoints. For example when the NEP failed – he removed himself from it, thus allowing Bukharin to take the blame – and him stay in the positive public spotlight. It’s this very middle ideological viewpoint that the evidence suggest allowed Stalin to change as he did, allowing him to use it to his great advantage. Despite this, other arguments perhaps suggest it is not the most significant factor in Stalin’s accent within the government, and that actually his deceitful, arrogant and shrewd personality was the true reason that allowed him to flourish the way he did. In conclusion, looking at all the evidence it is clear a combination of factors were involved in Stalin’s accent of power. On one hand it seems Stalin’s powerbase seems to be the primary factor, that despite anyone’s efforts his place within government allowed to build a vast fan base in such a short amount of time. Furthermore others power base didn’t seem to match the superiority of his, even though on the forefront they seem more important, Trotsky is a prime example of this. On the other hand his tactics seem the obvious significant factor – looking at how he manipulated allies and oppositions, such as Bukharin and Zinoviev. More over his ability to control the politburo with his allies over the testament suggests that this could have been a primary turning point for Stalin’s direction on how to achieve power. However diving into the muddle of linked causes, personalities seems to come out on top. The tactics and moral high ground was generally taken by his opposition, but it seems they didn’t play hard enough. They didn’t morally want to use underhand tactics and switch ideologies – because they believed in what they were fighting in. It’s this decorum that contributed more than anything else. Looking at the other side of the spectrum Stalin’s fierce personality, with no conscience seems to be the perfect mix to manipulate not only the communist party – but the general public as well. It is this sheer inhumane ability to be deceptive in this way that allows the evidence to suggest, on the top, personality is the most significant factor in accounting for Stalin’s defeat of his opponents in the years 1924-1929.

Software Process Development: Water Fall Model and the RAD

Software Process Development: Water Fall Model and the RAD Software Process Development Abstract Choosing the best suited Software development system (SDS) for any particular project is the first and foremost thing to do. If this step goes wrong or selecting an unsuited SDS for the project may lead to unsuccessful or incomplete or may be delayed to the time expected. Till now many surveys and investigations are done on finding new processes, rectifying the problems in the pervious projects, etc. the new processes every time comes with a new way of implementation of the software development process. In this project I am investigating on the basic implementation of the SDS with the water fall model and the rapid application development (RAD) model. For this a detailed study of the both the models are done, and then finding out which software development model is best suited for the development of windows applications. For this comparison the yahoo messenger (a windows application) is used as an example. Introduction Software development has become very difficult due to changing requirements, lack of standards, unpredictable schedules, and due to the insufficient training and more than that by the lack of effort by the professionals. After a lot of research, it was clear that the problem is with the process that is used for the software development, rather than the technology, which cause number of the problems in software development and in the maintenance phase. A new terminology is introduced with five levels of the SEI which is known as capability maturity model (CMM). Most of the software life cycle includes six processes they are: requirements engineering, design, programming, integration, delivery, and maintenance. Each of these phases in brief: Requirements Engineering In this phase first all the requirements that are required by the client a0re designers of the site collectively. Then the technique of rapid prototyping in which a prototype program is built that can illustrates the functionality of the desired software model. Using this prototype, clients can understand better how the final product would be, how would be the functionality and from that they can find out whether this is what they really need. If the requirements engineering process is not done properly, the resulting software product will not be useful to the client and it may not run correctly. Design In this process, the analysts and developers decide how to construct the software with the requirements specifications agreed in the requirements specification document. This way of designing is called stepwise refinement, and this allows the developers to control the complexity of the software. After completing the design, it is recorded in design specification document. Programming In this phase, programmers are divided into groups who write the actual code of the software. Before coding starts, the software is divided into separate units called modules. This modularization is done to reduce the complexity of the programming process. This is also responsible for proper documentation that describing the code and for testing the code to ensure that the code is free of bugs. Integration In this phase, the individual modules of the software are combined to form the complete software product. As the modules are developed separately, testing is very important in this integration process. Even when the design is good, some times incompatibilities between modules are likely to exist. All these problems are identified and corrected to complete the integration. Delivery In this phase, the developers deliver the completely working software product to the clients. Usually the clients will test the software to determine whether all the specifications agreed upon in the requirements specification document are fulfilled or not. If the client is satisfied with the software he accepts the software and installs it or else gives back for modifications. Maintenance In this phase, the software undergoes many changes after delivery in order to change the features or to fix the bugs, add new functionality, port the software to new platforms. Its not true that the work is over after delivering the product to client. Actually more work is to be done, after delivering the product, in this maintenance phase. From the investigation done the experts it is surprised to discover that of all the processes, the maintenance phase has the more cost of the life cycle. The diagram below shows the expected costs that are likely to be spending on each of the processes in the software life cycle. As maintenance cost is more, many developers started to use the design approaches that result in software, which is easier to maintain. History of Software Process Models The Software Engineering Institute was established at Carnegie Mellon University in Pittsburgh, Pennsylvania in 1984, under a Department of Defense contract. The mission of this institute is to provide the leadership in advance state of the practice of software engineering that helps to improve the quality of systems that are developed which depend on software. After two years the software process work has began. One of those results was the software process maturity model. In the year of 1987, the Software Engineering Institute and MITRE Corporation produced the first questionnaire on the maturity of a software in general, a set of question that has the options as yes-no are prepared that address organization, management issues and the technical software development process. In the next few years, the Software Engineering Institute developed two methods that are used for the questionnaire to test and conclude the report of an organizations software process. After many reviews, the Capability Maturity Model (CMM) for software was developed which replaced the software process maturity model in the year 1991. The CMM gives the detailed information of the levels of the firms that best suites for the general software process practices that are followed by the firms which are divided into five maturity levels. The questionnaire that are to be satisfied by the firms at there CMM levels , once the current level of operation is attained using the maturity, for further improvement of a companys software process involves in the implementation of the software engineering practices that are needed to reach each of the five levels in an order from the lowest to the highest level. Water Fall Model The water fall model is first and the basic model of software development. From this basic model only all other models were developed. The necessity of developing the water fall model was, until it was developed there was no model or software process work flow model. Thats the reason the water fall was the basic model for software development. Water fall model is divided into separate phases of software development. The phases in Waterfall model are: Requirement Specifications phase, Software Design, Implementation and Testing Maintenance. . All these phases are cascaded to each other so that second phase is started as and when defined set of goals are achieved for first phase and it is signed off, so the name Waterfall Model. All the methods and processes undertaken in Waterfall Model are more visible. All possible requirements of the system to be developed are analyzed in this phase. Requirements are set of functionalities and constraints that the end-user (who will be using the system) expects from the system. The requirements are gathered from the end-user by consulting the customer who have requested for the product. These requirements are analyzed for their validity and the possibility of incorporating the requirements in the system to be development is also studied. Finally, a Requirement Specification document is created which serves the purpose of guideline for the next phase of the model. Next comes the system and software design phase. In this phase, before starting for actual coding, it is highly important to understand what we are going to create and what it should look like? The requirement specifications from first phase are studied in this phase and system design is prepared. System Design helps in specifying hardware and system requirements and also helps in defining overall system architecture. In this phase the estimation of cost for developing the product is also analyzed depending on the requirements. The system design specifications serve as input for the next phase of the model. The next sequential phase is the implementation (coding) and unit testing the software. On receiving system design documents, the work is divided in modules/units and actual coding is started. The system is first developed in small programs called units, which are integrated in the next phase. So that it would be easy to develop the code by dividing the work into small units. Then each unit of work that is divided from the total work is developed individually by each developer and tested for that particular unit of work is done properly or not. This type of testing the individual unit code is called unit testing. In the next upcoming phases the small units of code is to be integrated into one single code and should be tested for the over all functionality. As specified above, the system is first divided in units which are developed and tested for their functionalities . These units are integrated into a complete system during Integration phase and tested to check if all modules/units coordinate between each other and the system as a whole behaves as per the specifications. After successfully testing the software, it is delivered to the customer. The maintenance phase is the most important and it is almost 70% of total software process life cycle. This phase of is virtually never ending phase (Very long). Generally, problems with the system developed (which are not found during the development life cycle) come up after its practical use starts, so the issues related to the system are solved after deployment of the system. Not all the problems come in picture directly but they arise time to time and needs to be solved; hence this process is referred as Maintenance. On the time ruin the problems may occur and the code may not accept the new type of data, and then there is the need to change the part of the code or correct that part of code. Due to some disadvantages of the water fall model later some other models are developed. The disadvantages are The main drawback of the waterfall model is the difficulty of accommodating change after the process is underway. One phase has to be complete before moving onto the next phase Inflexible partitioning of the project into distinct stages makes it difficult to respond to changing customer requirements. Therefore, this model is only appropriate when the requirements are well-understood and changes will be fairly limited during the design process. Few business systems have stable requirements. The waterfall model is mostly used for large systems engineering projects where a system is developed at several sites. Rapid Application Development (RAD) RAD is a software development process initiated by James Martin in 1980s. It is a very high level of application development techniques that uses prototype, iterative customization and CASE tools. RAD is a software development methodology that focuses on building applications in a very short amount of time, traditionally with compromises in usability, features and execution speed. Figure-Traditional RAD The traditional RAD software development cycle follows a rigid sequence of steps with a formal sign-off at the completion of each. RAD is not appropriate for all projects. This is bet suited for the projects that can be divided into small chunks and where scope is small. RAD has many core elements which make it unique are prototyping, iterative development, time boxing, team members, management approach and RAD tools. Prototyping: This part of the RAD can be done by the Computer Aided Software Engineering that focus on capturing requirements, converting them to a data model, converting the data model to a database, and generating code all in one tool. Iterative development: Iterative development means creating increasing functional versions of a system in short development cycles. Each version is reviewed and approved by the client to produce requirements that feed the next version. This process is repeated until all functionality has been developed. Time boxing: Time boxing is adding features to future versions of the software and developing it no time. It is very important aspect of RAD to complete the job in less time and get the best product out than other competitors. Team members: The RAD methodology recommends the use of small teams that consist of experienced, versatile, and motivated members that are able to perform multiple roles. As the client plays a vital role in the development process, dedicated client resources must be available during the initial Joint Application Development (JAD) Management approach: Active and involved management is required to reduce the risks of lengthened development cycles, client misunderstandings, and missed deadlines. In addition to enforcing a strict timeline, management must focus on team member selection, team motivation, and on clearing media or political obstacles. Coding phase: Developing Code in RAD process model takes very short span. At the time of development of these types of projects the there is no need or no time to make the code future enhancements. So the code developed using this process is not the most reliable code. Testing phase: In the testing phase the developed software or website is tested in two ways i.e. alpha testing and beta testing. Alpha testing is the testing done by the developers before delivering the product. This alpha testing can be done in two ways i.e. white box testing and the black box testing. The testing of all the models that are working properly or not and to ensure that each function is fully operational while at the same time searching for the errors in the code is called white box testing. Testing the internal and primitive operations and to sure that all are working according to the specification is called black box testing. Testing done by the customer to check weather all the specification requirements are working properly is called beat testing. If any problem occurs, then the error is set up and just added to the code at the appropriate position. Advantages: Speed and quality are the main advantages of Rapid Application Development, while potentially reduced scalability and feature sets are the disadvantages. The main goal of RAD is the speed delivery of the product using CASE tools, which helps in converting the requirements to code automatically. The speed delivery is the main feature of RAD because the product has the competitors and demand in the market. The software developed by the RAD has versions and each version is better, has new features or at least overcomes the defects of the previous versions. Disadvantages: Scalability and the reduced features are main drawbacks of the RAD Due to very less time using the time boxing the development of the product that can construct the advanced features is not possible. By using time boxing we have very less time to develop much more features and more enhanced features. Yahoo Messenger The versions of yahoo messenger that are developed with the features are: Version 3.0: Yahoo Messenger 3.0 (1.3 MB) The first basic yahoo messenger was version 3.0 with basic features of chat, webcam, file transfer and emoticons that can incorporate in between the text in chat box. Version 3.5: Yahoo Messenger 3.5 (1.9 MB) This version has the new features of mail updates of the user account and the option of my display image. This feature enables the user to show his picture to the person with whom he/she chatting. Version 4.1: Yahoo Messenger 4.1 (2.3 MB) In this version the send contact details, message archive are introduced. Send contact details option enables the user to send the messenger list in his account to others. If message archive option is set then all the conversations done by the account user can be stored in the local system where person chats. Version 5.0: Yahoo Messenger 5.0 (2.2 MB) This version has the new feature of photo share through which two persons can share the pictures by just dragging and dropping the pictures into the sharing box. This is the great feature that had made yahoo! messenger more popular. Version 5.5.1228: Yahoo Messenger 5.5.1228 (2.6 MB) This version has the option to change the skins and the option to join the chat rooms all over the world. Version 6.1922: Yahoo Messenger 6.1922 (4.5 MB) This version ahs the feature of play game with the other person in the chat. And the other new feature is buzz which alerts the with a sound. The chat box is provided with the text format tool bar. Version 7.0: Yahoo Messenger 7.0 (8.2 MB) This version has the drastic changes and much new features than the previous versions. The IM environment option that changes the backdrop of the chat box. Version 7.426: Yahoo Messenger 7.426 (8 MB) This version has the new feature called the voice chat. With this option a person can record his voice message and send it to this other person in the chat. This feature revolutionized the yahoo! Messenger and made popular. Version 7.437: Yahoo Messenger 7.437 (8 MB) In this version we have the plug-ins of yahoo! Games, yahoo! Music and yahoo! Weather. These features enable the users to play the games, listen to music and see the weather report in certain areas all over the world. Version 7. 5.0.647: Yahoo Messenger 7.5.0.647 (7.7 MB) This version has very slight difference than its pervious versions with only new feature that is calling pc-to-pc using the VOIP protocol that is developed for voice transmission over Internet. Version 8.0.0.506: Yahoo Messenger 8.0.0.506 (10 MB) This is the very advanced version of the yahoo messenger, which has an option sending the SMS to the mobile directly to the person who has signed in into his mobile device. And the persons who are have the account into the messenger list. The new and smart tool is the audibles tool bar for chat box, which has many prerecorded audibles in different languages and different animated pictures speaking out those audibles. This is how the 11 versions of yahoo! Messenger is developed using RAD. And many other versions are upcoming using this method of software developing such as yahoo! Messenger 8.0(Beta), which is under testing phase. With in 8 years the yahoo had developed 8 versions of Yahoo! Messengers with versions numbered from 3.0 to 8.0.0.506 with pc -to-pc talk and SMS to mobile. Developing Yahoo! Messenger with Water Fall Model The first and the foremost is that in water fall model all the requirements are taken at a time. The design and coding is done in the most common way i.e. from the design phase itself it is designed. Requiremental Analysis and Design: The requirements of the yahoo messenger are the login window, chat window, the server side application for maintenance. All these are the requirements that are required for the development of yahoo messenger. The client application requirements are Login window Frame window Chat window Manage Contacts Authentication message window Then after the language in which the coding is to be done is decided. Data base for the server side application should be developed; the entire design depends on the data base that is structure to store the data of every client. The design of the yahoo messenger is taken up by the minimum and basic requirements. The design is made normally with out nay future plans. Development Diagrams The UML diagrams play an important role in the software development diagrams. These diagrams illustrate the clear cut idea of the software that is being developed. Use case Diagrams: Use cases describe the behavior of the system when one of these actors sends one particular stimulus. This behavior is described textually. It describes the nature of the stimulus that triggers the use case; the inputs from and outputs to other actors, and the behaviors that convert the inputs to the outputs. The text of the use case also usually describes everything that can go wrong during the course of the specified behavior, and what remedial action the system will take. Context diagrams: A context diagram is a data flow diagram, with only one massive central process that subsumes everything inside the scope of the system. It shows how the system will receive and send data flows to the external entities involved. Class Diagrams: Class diagrams are widely used to describe the types of objects in a system and their relationships. Class diagrams model class structure and contents using design elements such as classes, packages and objects. Class diagrams describe three different perspectives when designing a system, conceptual, specification, and implementation. These perspectives become evident as the diagram is created and help solidify the design. Data Flow Diagrams: A data flow diagram (DFD) is a graphical representation of the flow of data through an information system. A data flow diagram can also be used for the visualization of data processing. It is common practice for a designer to draw a context-level DFD first which shows the interaction between the system and outside entities. This context-level DFD is then exploded to show more detail of the system being modeled. Implementation and Coding: In this phase the actually the code is developed. Before that the total code is divided into independent modules, so that the coding becomes easy. So the coding part is divided into modules such as Integration and Unit testing : After the coding is done for individual modules such as data base structure, frame work and the data base or server connectivity module are integrated into one module of code for the code to work with all the functions full. Then this code is tested after the integration is done, to check weather the code is working collectively after integrating the all the modules into one single code. In the testing phase the developed software or website is tested in two ways i.e. alpha testing and beta testing. Alpha testing is the testing done by the developers before delivering the product. This alpha testing can be done in two ways i.e. white box testing and the black box testing. The testing for all the modules is done to check weather all the code is working properly or not and to ensure that each function is fully operational while at the same time searching for the errors in the code is called white box testing. Testing the internal and primitive operations and to sure that all are working according to the specification is called black box testing. Testing done by the customer to check weather all the specification requirements are working properly is called beat testing. If any problem occurs, then the error is set up and just added to the code at the appropriate position. Maintenance Phase: This is phase in which the maximum amount of resources are used. In this water fall model the yahoo messenger requires many changes in the features for adding new features such as the voice chat, video conference, pc to pc call etc. For all these new features the present code is not venerable to add the new models or to integrate, so that the reason why all the code is developed again with new features in the water fall model which consumes more time and resources. Developing Yahoo! Messenger with RAD Instant messenger is first lunched by yahoo named as Yahoo! Messenger on 21 July 1999. The first version of yahoo messenger is version 3.0 for MAC operating system with the features of webcam, file transfer, emoticons. The important requirement of an instant messenger is chat, and this chat is enabled between system to system because the messenger chat box communicate between two systems using there MAC (Message Authentication Code) address. Windows Application version of instant messenger and web messenger are the products of yahoo. Analysis Phase In this phase the requirements such as software hard ware requirements are analyzed and listed for the usage of the development of the product. The main problem is that the windows application cannot be directly connected to the remote database (for authentication, chat, offline message). For that the web service is the best solution that can connect database remotely and can call the methods in the remote classes. Because the web service transmits the data from the remote database, and it is in very robust form to destroy. Then its is to be decided in which platform the project should be developed either in java or Microsoft .net or etc. in some cases the customer itself asks the product to be done in a particular platform. If the customer did not ask for any particular platform we can chose the platform on our own. Estimation of cost is made in this phase itself. The total cost estimation for development, maintenance, etc. the cost for development is calculated in man hours of work. Requirement analysis: Actually the requirement of an software include the requirements of the customer that he want in the software and the other software and hardware requirements that are needed for the software development. The features of the yahoo instant messenger are enhanced form version to version. There are many version of yahoo messenger from version 3.0 to version 8.1. in each version the new changes and features had been added such as voice chat, pc-to-pc call, plug-ins, IM-Environment, SMS to Mobile etc. For developing software or windows application or a web application we need software to develop such as C++, VC++, Java or Microsoft Visual Studio etc. For instant messenger we need to develop a windows application that can be run at the clients pc and we a need a web service to communicate the client-client transaction. The windows application cannot directly communicate with the remote database and cannot communicate with the other client without a web reference. So web service is used a web service for checking the authentication of the users account and his details. The first version of the Yahoo! Messenger 3.0 has only few features such as chat, web cam, emoticons. In the later version the features such as voice chat, pc-to-pc call, plug-ins, IM-Environment, SMS to Mobile added. But all these features are not added at time. They are all added for the future versions of 3.0 to 8.1. With all these requirements a prototype model is prepared. And for designing the software that prototype model should be approved by the client. Hardware Requirements For developing an instant messenger an ordinary system is sufficient. But to make the instant messenger work we need a server that acts as web service for the instant messenger to communicate between the users of the instant messenger. The uninterrupted internet connection to the server is very much important so that no users finds incontinent to work. And steps need to be taken for a fast recovery at the time of crashing of the server. Design phase First the total development of the yahoo messenger is divided into modules. Then the software diagrams are drawn for the convenient for the developing the code. First the context diagram is drawn for the project. Then comes the data flow diagrams in which the flow of the data in the project is shown. The next diagram is the ER-Diagram in which the all the parameters of the total project are represented in diagrams. This diagram is very much useful in developing a database in which a column is made for every single column in the database. In this database the data should be maintained in the tables. And these tables should have the primary keys and foreign keys (primary keys of other table in the current table is called foreign key). In this design phase it self the use case diagrams, activity diagrams and sequence diagrams are developed. Then the use case diagrams which sub parts or modules of the project. Depending on these all diagrams the total project is divided into small modules and these modules are distributed to each team for development. Time boxing is adding features to future versions of the software and developing it no time. It is very important aspect of RAD to complete the job in less time and get the best product out than other competitors. In the design phase a first a prototype model is prepared with all the requirements that are analyses in the requirement analysis phase. And for designing the software that prototype model should be approved by the client. The total project is divided in small chunks so that it would be easy to develop the software in no time. The design phase has many sub phases, they are Software development diagrams: These diagrams are very important and help a lot in the development of the project. The diagrams are Context diagrams, Entity relationship diagrams, Data flow diagrams, Use case diagrams, Collaboration diagrams, Sequence diagrams. All these diagrams act as a blue print of the development of the project and will be very useful at the time of the software development. Development Diagrams The UML diagrams play an important role in the software development diagrams. These diagrams illustrate the clear cut idea of the software that is being developed. Use case Diagrams: Use cases describe the behavior of the system when one of these actors sends one particular stimulus. This behavior is described textually. It describes the nature of the stimulus that triggers the use case; the inputs from and outputs to other actors, and the behaviors that convert the inputs to the outputs. The text of the use case also usually describes everything that can go wrong during the course of the specified behavior, and what remedial action the system will take. The use case diagram gives the details of the requirements, options in the product specified by the client. These requirements dont change whatever the software development procedure used, so that use case diagram is same as that of the diagram that uses water fall model for software development. why in water fall model there is only one main class and all the other sub classes or child classes are developed under it. When a product is developed in .net, default folder AppCode is created in which all the class files, script files are developed. In the figure shown below the the authentication, chat address book, preferences are separate classes developed under the AppCode. Database Design: The design of database consists of making the data tables that are used in the project. Designing the tables includes deciding the primary keys and foreign keys in the tables and the data types of the columns of the tables. After completing all these diagrams and the database design, the project is divided in chunks and distributed among the team members for development of the project. RAD is best

Eaton :: essays research papers

The Eaton Corporation is a corporation committed to implementing and advancing the technology they use throughout the companies four-business segments Automotive, Fluid Power, Electrical, and Truck. However Eaton isn’t solely committed to the advancement and implementation of technology in the products they design and create, Eaton also works to implement technology in their everyday business practices such as Production, Sales and Marketing, and Human Resources. Production is a large part of the Eaton Corporation, â€Å"Eaton is a global leader in fluid power systems and services for industrial, mobile and aircraft equipment; electrical systems and components for power quality, distribution and control; automotive engine air management systems, power train solutions and specialty controls for performance, fuel economy and safety; and intelligent truck drive train systems for safety and fuel economy.† With Eaton’s broad range of products efficiency in the production process is extremely important to Eaton. To maximize efficiency in the production process Eaton uses the Eaton Lean Six System this system helps allow Eaton increase the performance of the company by eliminating waste, simplifying processes, reduce cycle times, and more effectively deploy resources to it’s business segments all of which work to help Eaton increase their profits. Another system Eaton uses is known as PROLaunch, this system allows Eaton to speed of the production process of its products. PROLaunch guides Eaton’s production of new products from concept to completion using a, â€Å"set of integrated processes† to help speed up the development process of Eaton’s new products. Eaton also uses technology in their approach to Sales and Marketing. Eaton has to approach Sales on an incredibly large scale, with Eaton’s sales in 2004 topping $9.8 Billion and the company selling their products to customers in over 125 countries Eaton has developed a very successful Sales strategy. By using technology such as the Internet Eaton’s vast line of products are constantly available to any potential buyers. Using the companies website www.Eaton.com the Eaton Co. allows it’s potential customers to view and access information about all of Eaton’s products and also allows those customers to make inquiries to the division of Eaton that produces those products. Eaton also uses it’s website to allow customers the opportunity of E-Business transactions giving it’s customers nearly instantaneous access to purchase products from Eaton rather than having buy the product from an Eaton supplier. Eaton also uses it’s website to help in the Marketing of their products and services.

Unzipped :: Free Essay Writer

Unzipped In the expository text Unzipped- everything teenagers want to know about love, sex and each other, Bronwyn Donaghy has written about the facts and consequences of teenage sex. By doing so she has presented us with her old fashioned ideologies and her strong ‘anti-teenage-sex’ values and attitudes. As the audience Donaghy has tried to scare us into believing and following these attitudes, which are very evident throughout the entire text. Virginity and abstinence is the way to go. This text is targeted at young youths who are curious and want to explore their sexuality and their parents who Donaghy thinks should be open and willing to educate their children on the subject. In order to do this she has employed the use of three different writing styles: These being narrative, expository and real life accounts. Between chapters and further the different sexual topics, Donaghy has split the information up by an ongoing fictional story, which runs through the entire book. It is a narrative story about two inquisitive and curious adolescent teenagers who fall in love and start to get ‘full on’ but then decide against the idea of sex as it is simply too complicated. Donaghy has done this by using very ‘down to earth’ language that she thinks teenagers can relate to and a simplistic story line. However by trying to relate to teenagers at what she perceives is their level in my opinion gives the story very little realism in regards to reality as she simply cant ‘pull it off’. The story is made to almost look superficial. Within the story it is made very clear that abstinence is the way to go, reflect Donaghy’s ideologies. As the writer she does not even try to hide this attitude of hers and at one stage, through Ben’s mum is able to vocalise th is: ‘ Love is a wonderful thing†¦. Sex on the other hand, can be very dangerous in the hands of the young and inexperienced.’ She then goes on to say: I sincerely hope you wont’. This is in relation to Ben and Lucy’s sex life. By creating this story Donaghy tries to manipulate us as the audience to accept these ideas and her values as being right. To further shape our response towards this very strong attitude Lucy and Ben adhered to Ben’s mum’s opinion and further Donaghy’s ideologies. She developed these characters in order to express her perception of what teenage relationships should be like in her eyes.

Leukemia and Its Treatment Essay -- Cancel Health Medical

Leukemia is something that we hear about a lot. I believe that people do not understand exactly what leukemia is and how dangerous it can be, I chose this topic to try to help them understand. In this paper I will explain what leukemia is and what treatments you can choose from to treat the cancer. Leukemia is a type of cancer. Cancer is a group of more than 100 diseases that have two or more important things in common. One is that certain cells in the body become abnormal. Another is that the body keeps producing large numbers of these abnormal cells. Leukemia is cancer of the blood ce3lls. When leukemia develops the body produces large numbers of abnormal blood cells. In most types of leukemia, the abnormal blood cells and they do not function properly.(Cancer compass 10)   Ã‚  Ã‚  Ã‚  Ã‚  There are two major groups of leukemia they are grouped based on how fast they spread. Acute leukemia is a cancer that starts in the organs that makes blood, namely the bone marrow and the lymph system. Acute leukemia spreads very quickly. Chronic leukemia is when many white blood cells are made in the bone marrow. Depending on the type of white blood cell that is involved chronic leukemia can be classified as chronic lymphocytic leukemia or chronic myeloid leukemia. Chronic leukemia spreads slowly.( Longe,186)   Ã‚  Ã‚  Ã‚  Ã‚  There are many different types of treatment for leukemia the one that you receive depends on what stage the cancer is in and what kind of leukemia you have. Chemotherapy is one form of...

Chapter Guide for “Twilight of Atheism” Essay

The classical version of atheism is vastly different than the atheism that is known today. – Some consider â€Å"modern atheism† as one of the greatest achievements of human intellect. Immortalization in Greek myths meant â€Å"infinite extension of existence, not the infinite projection of moral qualities† – Classical Greek atheism denied â€Å"traditional religion of the Athenian establishment† – Protestant reformers wrote against church’s corruption and straying from â€Å"authentic models of the New Testament† – Protestantism eventually gained popularity in Western Europe in 1600s -â€Å"Historical origins of modern atheism lie primarily in an extended criticism of the power and status of the church – The 18th century was regarded the â€Å"most creative period of atheist experimentation and reflection† Historians date the birth of ‘avowed’ or intentional atheism in Britain to around the year 1782 Credit for the serious advancement of atheism on he eve of the Victorian era is most due to William Godwin. He believed that social vision rested on the assumption of the perfectibility of humanity through reason. Mary Robinson wrote that, â€Å"nature was emancipated from being God’s creation, and became a divinity in its own right. Percy Shelley argued that since compelling evidence for the existence of God is lacking, here is no intellectual obligation to believe in God. However, Shelley never explicitly denies the existence of a God in general. Shelley seems to argue against institutional religion. Mary Ann Evans aka George Eliot, grew up an evangelical, but turned into an atheist because she was of the increasingly dogmatic and impersonal constructs of the Christian faith. Evans/Eliot turned to a religion of human sympathy, she believed that the moral aspects of faith could be maintained without Christianity. A. C. Swinburne was more avant-garde and aggressive in his approach to spreading atheism. He visualized god as a birch-wielding tyrant that oppresses humanity. Swineburne believed that only the rejection of God would open the way to human self-fulfillment. By the middle of the Nineteenth Century Jesus was seen as a moral sage, or as a role model. George Tyrrell was appalled that Jesus was seen as less captivating, but conceded that the Christ was a â€Å"pale reflection† of his biblical self. Chapter 6 Dostoyevsky was a Russian novelist that wrote on a fictional Russia that turned to atheism to solve its problems. While he showed attractive of that choice, he also presented some of its more troubling features. His criticisms were directed more toward the world God supposedly created, more than critiquing God himself. Nietzsche emphasized that the belief in the Christian God became unbelievable. Nietzsche admits that the realization that â€Å"God is dead† will travel slowly because it is just too â€Å"unthinkable†. For nihilism, a religious worldview is oppressive because it insists that we will be held accountable for our actions. In a nihilistic view, there are no sins, because nothing matters in the end. Albert Camus argued that human life is rendered meaningless by death, which prevents the individual from making sense of existence. For Camus death is not to be seen as a realize but as a denial of all of our accomplishments. However Atheism did not materialize as well in the United States. Many thinkers believed that if God was not in heaven, he could be found somewhere else. Chapter 7 â€Å"new atheism† embraces those who question God; people who consider themselves Agnostic. McGrath writes that atheism is not about the suspension of judging whether God exists, he states that true atheism is a firm disbelieve in God. He writes that true atheists view religion as outdated, enslaving, and a self-contradiction. McGrath criticizes the idea that if there was a God, why does he allow suffering, by showing the fact that many of the atrocities committed to humans are caused by other humans – the ones that are supposed to be the â€Å"new gods† In the 19th century people were invited to in-vision a world without God, but in the 20th it had already been attempted through the Soviet Union. But by 1980 it was obvious that this had not happened, in seemed to have reversed. John Henry Newman wrote that Christianity was a, â€Å"living organism still in the process of evolving and developing†. Pentecostalism seemed to become very popular in the years after the second World War. Pentecostalism stresses a direct, immediate experience with God, apposed to the more dry forms of worship in Christianity. It also uses a language that allows it to bridge cultural gaps easily. Chapter 8 – McGrath believes that Protestantism helped Atheism develop in some way. -Durning the Reformation the distinction between nature and God were widened a bit. The idea that the natural world was not sacred spread amongst popular thinkers. -They believed that even if God did create the world, we could not conceive God through it. They believed that God had to be known indirectly. Protestant reformers suspected that that medieval Catholicism occasionally degenerated into a folk religion of nature. -They believed that God revealed himself through the bible and preaching. He states that Protestantism encouraged the notion that God was absent from human culture and experience. This idea seems to mirror some of the ideas the budding ideas of Atheism. McGrath argues that protestantism took away some of the creativity of religion, which in turn made atheism seem more appealing. Atheism had a view of universality and a notion that it was above the common person. – Atheism has always been on the sidelines of American life and perhaps will remain there. – Signs of loss of confidence in atheism. – â€Å"Sun seems to be setting on an†¦Ã¢â‚¬Ëœempire of the mind’† Chapter 11 -Future of atheism lies in private belief, not in the public domain it once had. – Proved situation specific, not universal, and oppressing and not liberating. -Radical religious change led to tinkering with vocabulary instead of eliminating vices. Atheism confirms this theory. Nietzsche wrote, â€Å"God is dead, as a meaningful reality, but the people had to believe in something else if that was the case†. -Sigmund Freud stated that, â€Å"religion encouraged unhealthy and dysfunctional outlooks on life†. -Growing awareness for spirituality instead. -Religion brings together groups of people such as immigrants, creating communities. -In the US, atheism spawns organizations, not communities. -Atheism has not learned from their leader’s mistakes, and needs to grow leaders to fix it – Greatest virtue: moral seriousness. But atheism is in a twilight zone at the moment.

Positive Aspects of Technology Essay

From homosexuals first invention of the wave to modern days ripe(p) computers, i discount clearly test how far human beings have demonstrable with technology. Modern technology has provided populace with numerous positive grimaces from getting to places in seconds to band complex diseases. The most fundamental and important positive aspect of technology is that it gives humans the ability to share knowledge more than effectively. Nowadays, a country is not delimit by its wealth or influence, sooner by its ability to develop and pull in knowledge (Johnston 1).In the essay, The Diplomacy of Knowledge, origin David Johnston states that, information has never been so present and so cheaply and easily share (1). In different words, information has never been so readily available, thanks to the firm growing Internet. The Internet allows billions of people to state their opinions and put forth their knowledge for others to see. Johnston overly mentions that the foundati ons of the internet were laid by ccc years of discovery in mathematics and science from Newton to psyche (2). considerable scientists such as Newton to Einstein shared their experience and findings which have require the cause of all the ongoing expert development. For instance, the recent uprising in Libya was enormously successful due to the internet. Thousands of people stick on Facebook statuses and communicated in numerous other ways. By overlap each others thoughts and knowledge, they were able to overcome the situation by establishing a strong and organized community. Moreover, raw(a) inventions are also largely squeeze by the sharing of knowledge and this nominate be evidently seen with a great discovery such as Insulin.Charles outdo and Frederick Banting, a bio-chemist and a surgeon, are innovators from opposite fields. Both of them shared each others knowledge and brought forth one of the greatest discoveries of all time, insulin which saved millions of diabeti c patients. In other words, todays advancements in technology let the sharing of knowledge much more effectively, as it allows mankind to experience unprecedented rates of vary (2). It also gives humanity the hazard to afford rapid transformations, characterized by risk and opportunity on a global scale (2).These changes brought through the sharing of knowledge fiddle an evolution in social and honorable factors within the society. In conclusion, technology has provided mankind with countless positive aspects, although the greatest aspect is the better collaboration of knowledge. From insulin to modern medicine, register has made it clear that great things can happen when everyone shares their learning with each other. As Thomas Jefferson mentions, by unaffixeding your candle with the flame of mine, my light is not diminished, it is enhanced (2).