i Heard The Owl Call My Name And the Black Robe: The Indians :: essays research papers

"I Heard The Owl Call My Name" and "The Black Robe": The Indians Although the Indians in I Heard The Owl Call My Name, and in The Black Robe are primitive in the technological sense, they are neither simple or emotional people. The Indians in both texts could be classed as primitive people - if we take primitive to mean technologically underdeveloped. The level of technology possessed by the white man is far superior to that of the Indians, yet the Indians in The Black Robe are happy to accept and use muskets, and in I Heard The Owl Call My Name they are familiar with motors, washing machines and modern building techniques brought by white man. The Indians display their level of ignorance in regard to modern technology in The Black Robe, when the enemy tribe believed that muskets could only be fired once and once fired, they are useless. The Indians had little knowledge of modern materials or tools. When comparing the Indians in The Black Robe to the Indians in I Heard The Owl Call My Name, we must take into account that The Black Robe was set two hundred and twenty years earlier than I Heard The Owl Call My Name, and white mans influence on the Indians in I Heard The Owl Call My Name was much greater. Technology did not play an important role in the Indian's way of life. Traditionally, the Indians lived off the land taking only what they needed, and their hunting and building methods had served them well for centuries, therefore their need to develop new technology would not have been great. The Indians are not simple or barbaric people. Their complex belief system and folklore related strongly to the environment and gave reasons for the

Israel :: essays research papers fc

Introduction p.1 I. Geography of Israel p.2 II. Population of Israel p.3 III. History of Israel p.4 IV. Government of Israel p.5,6 V. Religions of Israel p.7 Bibliography p.8 Introduction In the past few decades, atleast since 1948, no other country has been in the news more often or has gotten more international attention than Israel. First, Israel got attention because it was to be a refuge for the poor unfortunate Jewish people who survived the Holocaust. They would, once and for all, have a Jewish homeland, where the key to citizenship was simply being Jewish. The majority of the world had sympathy for the Jewish people, at that time. Along with this sympathy the world had expectations that the Jewish people would be better, morally, than the other nations of the world. As a result, Israel is often put under a figurative microscope and each and every thing she does is analyzed. For many years people only said the nicest things about Israel, but that has changed, recently. Many people think that one of the reasons for this change is because of the power the Arabs have as a result of their oil and money. Since 1948 Israel has had to deal with regular wars waged by its Arab neighbors, with one of the highest taxation systems in the world and with double digit inflation every year. There is a division among its religious and non-religious people, and a division among its citizens of European vs. North African origin. Israel has, in the past, had to deal with not enough immigration and most recently too much immigration. When Israel was first established there was much work to be done and too few people to do it. Now there is rising unemployment in Israel, partly because of the mass of new immigrants from the Soviet Union and from Ethiopia. There was a time when people moved to Israel and never thought about leaving; that has changed. You will learn more, in the following pages, about this dynamic and wonderful country of ours, "Eretz Yisrael", the Land of Israel, homeland of the Jews. Bibliography 1. Feinstein, Steve. Israel. Minneapolis: Lerner Publication Company, 1988. 2. Taitz, Emily and Henry, Sandra. Israel, A Sacred Land.

Essay on Eating Disorder - Anorexia Nervosa :: Argumentative Persuasive Topics

Anorexia Nervosa There may be murmurs about that girl who only fixes herself a salad with only vinegar at dining services or suspicious glances at someone who spends 45 minutes on the treadmill and then switches to the stair stepper at the rec. On-campus eating disorders are talked about everywhere and yet are not really talked about at all. There is observation, concern, and gossip, but hushed conversation and larger scale efforts to help and change never seem to earn public attention. There is this girl that I grew up and graduated with. I talked to her almost everyday at school, but we were never that close. I never saw much of her over the summer except when she was out running after a two to three hour softball practice. At my younger sister's volleyball game about a month or two ago, I saw this girl. She was so thin it was almost disgusting. Her skin was pale, her hair was thin, and I could see her ribs through her shirt. She went from looking healthy and physically fit to looking sick and fragile. This is why I chose this topic. People need to pay more attention to this disease. Anorexics are literally dying to be thin. Most of you probably already know what anorexia is, however in case you don't anorexia is basically a disease involving self-starvation. Anorexia victims have a very low "ideal" weight. It might begin as a normal diet carried to extremes, reducing their food intake to a bare minimum. Rules are made of how much food they can eat in one day and how much exercise is required after eating certain amounts of food. With anorexia, there is a strong almost overwhelming fear of putting on weight and they are preoccupied with the way that their bodies look. Anorexia sometimes involves use of laxatives, diet pills, or self-induced vomiting to lose or to keep weight off (http://www.netdoctor.co.uk/diseases/facts/anorexianervosa.htm). Anorexics may show symptoms such as extreme weight loss for no medical reason. Also, many deny their hunger, chew excessively, choosing low calorie foods and exercising excessively (http://news.bbc.co.uk/hi/english/health). Anorexics do all of those things to become thin, when in reality, it makes your body better at storing fat rather than burning it. Starving yourself to lose weight is not beautiful in any way. Starved bodies ache all of the time. Essay on Eating Disorder - Anorexia Nervosa :: Argumentative Persuasive Topics Anorexia Nervosa There may be murmurs about that girl who only fixes herself a salad with only vinegar at dining services or suspicious glances at someone who spends 45 minutes on the treadmill and then switches to the stair stepper at the rec. On-campus eating disorders are talked about everywhere and yet are not really talked about at all. There is observation, concern, and gossip, but hushed conversation and larger scale efforts to help and change never seem to earn public attention. There is this girl that I grew up and graduated with. I talked to her almost everyday at school, but we were never that close. I never saw much of her over the summer except when she was out running after a two to three hour softball practice. At my younger sister's volleyball game about a month or two ago, I saw this girl. She was so thin it was almost disgusting. Her skin was pale, her hair was thin, and I could see her ribs through her shirt. She went from looking healthy and physically fit to looking sick and fragile. This is why I chose this topic. People need to pay more attention to this disease. Anorexics are literally dying to be thin. Most of you probably already know what anorexia is, however in case you don't anorexia is basically a disease involving self-starvation. Anorexia victims have a very low "ideal" weight. It might begin as a normal diet carried to extremes, reducing their food intake to a bare minimum. Rules are made of how much food they can eat in one day and how much exercise is required after eating certain amounts of food. With anorexia, there is a strong almost overwhelming fear of putting on weight and they are preoccupied with the way that their bodies look. Anorexia sometimes involves use of laxatives, diet pills, or self-induced vomiting to lose or to keep weight off (http://www.netdoctor.co.uk/diseases/facts/anorexianervosa.htm). Anorexics may show symptoms such as extreme weight loss for no medical reason. Also, many deny their hunger, chew excessively, choosing low calorie foods and exercising excessively (http://news.bbc.co.uk/hi/english/health). Anorexics do all of those things to become thin, when in reality, it makes your body better at storing fat rather than burning it. Starving yourself to lose weight is not beautiful in any way. Starved bodies ache all of the time.

Lord God forgive me! Essay

   The grenade had been thrown and it goes through it’s stages building up to the horror of the war. â€Å"(Swish swish swish BANG)! † This quote shows that there is silence at first and Sherriff shows what the grenade would do. He shows the tense of the atmosphere for example the type of smooth faint noise the grenade would make when it is in the air and then it builds up to the great noise when the grenade lands on the ground. This quote shows the tense of the atmosphere and the stages it goes through until it seems completely realistic. Sherriff uses the this example in the stage direction to show the horror’s of war through the atmosphere, through noises he is able to show the violence there is in the war, this quote can help the director create the scene and help the audience give a better understanding of the horror’s of war. R. C Sherriff uses a variety of different structures of language through the characters, he shows the audience on how the soldiers had spoken most of the time through out the war and how they might speak due to their class. For example, upper class soldiers would speak in a more posh accent and have a better use of grammar whereas the lower class soldiers would use army jargon such as â€Å"minnies† and â€Å"pineapple’s† as well as slang such as characters dropping the letters in some words, for example a soldier says e instead of he. Sherriff had created characters with this characteristic on language so he could show the rank the men are in. Osborne is from an upper class therefore he uses language in a good sense of grammar and he speaks words in a posh accent. â€Å"Osborne: Cheerio. † This quote shows that a character called Osborne is from an upper class since he uses words like â€Å"Cheerio† which is a posh word. Mason a cook who constantly speaks slang shows his characteristics to be from a lower class since he uses that sort of language and has a poor level of work in the war. â€Å"Mason: E said the leopard can’t change its spots. † This quote shows that a character called Mason is from the lower class since he speaks slang, for example he drops his h when saying he. Sherriff had initially done this because this reflects the rank the men are from so it can give a clear understanding of the characteristics to the audience. The characters Raleigh and Stanhope are significant roles in the play. Raleigh holds the characteristics of a nai ve, inexperienced and gormless person who had just joined the company. Stanhope, who is more opposite to Raleigh, he runs the company which shows that he is much more experienced. Raliegh had known Stanhope from school even though Stanhope was three years older than Raleigh. The characters mainly represent the horrors of war by talking about violence in their conversations and actually going through the process of it when coming to the points of attacking and fighting. Through out the course of the play the characters interact with each other dramatically and emotionally. Their behaviour reflects how they had survived the war, for example they would try not to talk about bad and emotional events and they would try to adapt to positive points while drinking rum. Stanhope talks about upcoming violent events. â€Å"Stanhope: We must expect this attack on Thursday morning. † This quote shows how the characters would represent the horrors of war by talking about an attack which hold the structures of violence, it makes the audience imagine a fight of some sort and injuries which reflect the horror’s of war. When the soldiers were to attend an attack six soldiers went but five came back and one had died which was Osborne. â€Å"Stanhope: Four men and Raleigh came back sir. Colonel: I’m very sorry. Poor Osborne. † This quote shows that one of the soldiers had died which shows death as a part of the horror’s of war and the men interact kindly with each other at this point because their fellow friend had just died. There are many ways the Stanhope and Raleigh had interacted with each other through out the play. At first points of the play Raleigh was more of the shy person and had seemed more scared to talk to Stanhope. â€Å"Stanhope: How did you get here? Raleigh: I was told to report to your company, Stanhope. † This quote shows how Raleigh had reacted in a more respectable manner and had called him Stanhope instead of his original name, Dennis. In addition this quote shows that Raleigh had deliberately joined Stanhope’s company which shows that he cares for Stanhope. The play shows how the soldiers were able to cope with the horrors of war since Stanhope had come back from an attack and he had started to celebrate with the other soldiers as soon as he gets back. â€Å"Mason: I thought I might tell you sir, this is the last bottle. Stanhope: The last bottle! Why damn it, we brought six. Mason: I know sir, but five of them have gone. † This quote shows that even after Osborne’s death, the soldiers are not that emotional because they face their problems to alcohol and try not to remember those emotional and heartbreaking moments. This quote shows the behaviour the soldiers had that would help them to cope with the horror’s of war. Overall this play shows the horrific effects of war and that it puts a bad example on a person, and soldiers are not treated fairly due to their personal problems. In my opinion I think that there is no reason for war, it does nothing other than create a bigger stage of conflict. It ruins many soldiers life, when they could have had a ordinary life but war can put immediate effect on it. Overall I think that R. C Sherriff had tried to outline the horrors of war, the causes of it and how it can also cause soldiers to suffer. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Miscellaneous section.

A Village Cricket Match: A.G. Macdonell

Answer: A. G. Macdonell's â€Å"England, Their England† is an excellent work of satire. The novel follows the remarkable experience of Donald Cameron who was forced to go away from Scotland by the terms of his father's will and pursue a career (appropriate to literature) in London. His first undertaking was to discover what the English were all about, and he ventured on his act of enthusiastic searching. A Village Cricket Match† is an excerpt from â€Å"England, Their England†. The story is a study in humor and satire of the village cricket game. All kinds of strange and unconventional behavior and activities are exhibited in the match which enduringly appeals to the readers. Donald gives a high hearted commentary of the match containing some hilarious incidents: Elements of humor: Ambience in and around the field. Blue and green dragonflies playing hind and seek among the thistledown; a pair of swan was seen flying overhead; an old-fashioned person was seen working, leaning upon a scythe; a magpie was seen, lapping lazily across the field; doves were cooing; the sun was shining unsteadily and visibility was impeded with atmospheric moisture and dust( quite unfavorable for the game of cricket); silence (heating up the excitement) was prevailing all around. Village folks It appeared that some of them had been eagerly waiting to watch a match of this standard. Village folks are usually impatient, but here, they were showing some kind of patience Village people suffer from the unusual behavior of God who seems to have done great injustice by putting up a large financial and social difference between the rich and the poor. When these village people have endured such eccentricities of God, they will have no difficulty in bearing with the match that is going to be played by the people (Man) of eccentric characters. Actually, saying this, Macdonell brings out a faint hint of humor in advance. Changes brought about before the match started and its effect: Before the match began, two players of the English team were found absent; so, two Scottish players from the village team were asked to field for both the team and bat for neither of these two teams. This arrangement, however, irritated these two players and they withdrew themselves from the match. Two missing English players arrived at the spot in a car and they brought with them another person who claimed that Hodge, the captain of the English team had asked him to play and that was why he had come and he was determined to play the match. On the other hand, two Scottish players who had left the team were brought back into the team after negotiations. Finally, it was decided that two sides would play with twelve players, instead of usual eleven players. However, the English team won the toss and decided to bat. Batting performance by the English players: Opening batsmen: James Livingston, a club cricketer and Boone, a huge man dressed in Cambridge Blue. Boone got this â€Å"Cambridge Blue† honor for rowing, but Donald, the narrator took him to be great player and thought that his inclusion in the cricket team for playing a village match was not at all necessary. James faced four balls from a bowler who, by profession, was a blacksmith. The first ball went past like a bullet resulting in four byes. The second ball was a full-length and it went over James hitting directly the stomach of the wicket-keeper who was replaced by a substitute wicket-keeper. The third ball was skillfully hit for a six. The fourth ball was also a full pitch that took off his leg stamp. The score was then ten runs for one wicket. The professor came to bat and got hurt as the fifth ball hit his ears. He went back to the Three Horseshoes. Mr. Harcourt came to play and he unfortunately hit the wickets with his bat before the sixth ball from the blacksmith was bowled. The score stood at ten runs for two wickets with one person retired hurt. Boone who looked so stout was stumped on the very first ball of the new over started by the local rate-collector, a left-arm bowler. The score was ten runs for three wickets. The next player was a singular young man. He appeared quite d ecent and on enquiry it was found that he was Mr. Southcott, a famous novelist. He hit the very first ball he faced over the three Horseshoes. The second ball he faced was hit into the saloon bar of the Horseshoes, making Mr. Harcourt who was sitting there and drinking beer became so afraid that he had to take several pints to recover from the trauma. The third ball that he faced was hit and it landed in a stream of trout, upsetting the rate collector. Ignoring enthusiastic instruction from the captain, Hodge, Southcott just made one run, playing in his own style for the next fifteen minutes. While playing defensive, Southcott inadvertently allowed one ball to hit him out. The score was sixty-nine for six and Southcott’s individual score was fifty-two. Besides, the other interesting part of the game was the participation of an American journalist who did not know anything about the game of cricket. He hit a ball towards square leg and threw down his bat, and he himself ran towards the cover-point. Finally, he confessed that he thought he was playing baseball. Humor used to describe umpiring: Mr. Harcourt who was earlier dismissed was sent for umpiring much to the discontent of the local team. He, being tipsy, declared a ball as ‘No-ball’ before the bowler delivered the ball. Humor used to describe the bowling-action: Mr. Harcourt’s calling a ‘No-ball’ made the bowler so confused that he failed to retain control over his bowling-action and the ball, slipping from his grip, hit the fielder at the third-man position. The bowler himself fell on the center of the wicket. – See more at: http://aidtoed. blogspot. in/2012/11/isc-english-literature-2013-village. html#sthash. OaCbFG0f. dpuf

Software Testing in Safety Critical Systems

Abstract Today, many safety-critical applications are controlled by computer software. Therefore effective testing tools are required to provide a high degree of safety and to reduce severe failures too minimum. The paper examines existing regulating standards in safety-critical systems. By comparing different software testing methods the requirements and challenges in safety-critical software testing are being evaluated. The QUICKIES standard serves as the mall regulatory framework for all separately systems and provides the basis for the creation of application- and Interdependently tankards.Moreover it defines certain safety integrity levels depending on the field of application and recommends testing methods according to these levels. In model- based safety testing a usage model with restricted space state domain is used to generate representative test cases. Statistical testing is a mathematical approach that uses a high number of test cases to reach a significant result. The ma in challenge of all safety-related testing methods Is to reduce testing time and complexity without distorting the significance of the test.These can for example be transportation systems, power plants, and medical applications. As people's lives depend on the correct function of such control systems and their software, thorough testing is required before they can be admitted to operation. There are many different software testing methods. Most of them only analyze the probability of a failure but do not value its severity. However, in safety-critical systems a failure that has severe consequences, even if it is extremely rare, can not be accepted. Therefore testing in this field has to be adopted accordingly.The purpose of this paper is to find and compare the latest methods for safety-critical footwear testing and to identify the most common industry standard in this field. Moreover the requirements and challenges in safety-critical software testing will be elaborated. At the begi nning the paper will provide definitions that are required for the understanding of the subsequent chapters. After that, an introduction to the JUICE 508 safety standard, which serves as a basis for most industry-specific standards, is given.The chapter â€Å"Testing Methods† will address some of the latest safety-related software testing methods in detail. 5 Definitions 2 Definitions 2. 1 Reliability and Safety In safety critical systems both, reliability and safety are required to achieve the goals of dependability. However, reliability and safety are two different attributes of dependability. The reliability, R(t) , of a system is a function of time. It is defined as the conditional probability that the system will perform its intended function in a defined way over a given time period and under certain specified and assumed conditions.The most used parameter to characterize reliability is the Mean Time To Failure (MATT). The safety, S(t), of a system is defined as the pro bability that a system ill either perform its functions correctly or will discontinue its functions in a way that does not interrupt the operation of other systems or Jeopardize the safety of any people associated with the system [1]. Based on these definitions, in reliability testing all failures are weighted equally, whereas in safety testing the failures are weighted according to their severity.Therefore, a reliable system may be quite unsafe and a safe system may be very unreliable. 2. 2 Safety-critical System States very complex to generate. As many states are unreachable or very difficult to reach hey can be reduced to a relatively small number of representative system states. These states are grouped in three subsets: Normal State Subset (NUNS), Fail-Safe State subset (FPS) and Risky state subset (IRS). Their relationships are: s=Unusualness; 6 Their inter-dependability is described as a Markova chain (see figure 1) [2]. Figure 1 : Three-state Markova Model for Safety-critica l Systems(Source: 2. Markova Chain Usage Model The Markova chain usage model describes the possible usage of a software based on a predicted environment. It can be used to generate statistical test cases and to estimate the software reliability. In an Markova model the transition from operation I to operation J can be denoted by an ordered pair . Let be the transition probability from operation I to operation J, with and EX=I .. N p(is)=1, where n is the number of operations. The transitions and transition probabilities can be represented in the form of a matrix [3].Each specific usage of the program corresponds to a path X=(XI, XX,†¦ Xi) in the Markova chain where Xi corresponds to the I-the operation. P(Xi, X]) determines the next executed operation J after execution of operation I. Since the operations are random rabbles, each path X=(XI, XX,†¦ ) forms a stochastic process. For a particular path x=(ox, XSL ,†¦ ), the corresponding path execution probability is [3]: 7 pox pop , x 3 Standards There exist both national and international standards and guidelines at different depths and classifications which define requirements for safety-related technologies. Yester and provides the basis for the creation of application- and underspecified standards. It includes more than 500 pages of normative and informative specifications and proposals. Nowadays most safety-related standards are based on he JUICE 508 in combination with the previously applicable requirements [4]. The JUICE 508 defines so called Safety Integrity Levels (Sills) which serve as a measure for the safety requirements on a certain system. The following table shows the different SILLS as well as the corresponding probability of failure and application examples.Probability of Failure One Failure in x Years Consequences Application Example The last three parts, are informative and include practical examples which should help to simplify the application of the standard. The ‘CE 61 508 describes the complete life cycle of safety-related systems from planning to decommissioning and refers to all aspects related to the use and requirements for electrical / electronic / programmable electronic systems (E / E / PEE) for separately functions [4]. According to the focus of this paper only the parts relating to software testing are mentioned in the following paragraph. Figure 2 shows the verification and validation process in software development according to the JUICE 508 standard.The E/E/PEE system safety requirements are applied both on the system architecture and the software specifications. Every level in the system architecture verifies if it meets the requirements of the next higher layer (I. E. Coding fulfills module design requirements, module design fulfills software yester design requirements etc. ). Moreover each system architecture layer is tested by a specific test. As soon as the test circuit is closed successfully the software can be validated. The st andard also recommends and rates certain test methods according to the required SILL. In order to meet the requirements of the ‘CE standard a series.Test methods comprised in the ‘CE 61 508 are categorized as follows [6]: Failure analysis (I. E. Cause consequence programs) Dynamic analysis and testing (I. E. Test case execution from model-based test case generation) Functional and black box testing (I. . Equivalence classes and input partition testing, including boundary value analysis) Performance testing (I. E. Response timings and memory constraints) Static analysis (I. E. Static analysis of run time error behavior) 9 Figure 2: ‘CE 61 508-3 Verification and Validation Process(Source: 10 Testing Methods 4 Testing Methods There are many different software testing methods.A detailed introduction to all different methods would be far beyond the scope of this paper. Therefore the author will only mention two methods he deems most relevant in the field of safety-relat ed software testing. Finally both methods are compared and their possible application areas are evaluated. 4. 1 Model-based Safety Testing In model-based testing explicit behavior models that encode the intended behavior of a system and its environment are used. These models generate pairs of inputs and outputs. The output of such a model represents the expected output of the system under test (SOT). Mineral model-based testing method. The system safety-related behavior is defined in the safety requirements specification. Test cases are derived from a safety model that is extracted from the SHUT and from formal safety requirements. This model encodes the intended behavior and maps each possible input to the corresponding output. Safety test selection criteria relate to the functional safety of the safety- critical system, to the structure of the model (state coverage, transition coverage), and also to a well defined set of system faults.Safety test case specifications are used to fo rmalize the safety test selection criteria and render them operational. For the given safety model and the safety test case specification, an automatic safety test case generator and optimizer generates the safety test case suite. Finally, the concreted input part of a test case is submitted to the SHUT and the SOT's output is recorded. The concentration of the input part of a test case is performed by a safety test engine. Besides executing the safety case, it can also compare the output of the SHUT with the expected output as provided by the safety test case [6]. 1 Figure 3: Model-based Safety Testing according Gang You et al. (Source: Test Case Generation One of the most commonly tools for test case generation are model checking techniques. The main purpose of model checking is to verify a formal safety property (given as a logic formula) on a system model. In test case generation, model checking is used in order to find violations of certain formal safety properties. Safety mode ls of safety-critical software systems may have a huge number of states. Therefore the greatest challenge when using a model checker is to cope with the state space explosion.As a countermeasure, Gang You et al. ‘s approach applies the safety model, which is derived from SHUT and certain safety requirements. The model 12 limits the number of states by splitting them into three subsets (NUNS, FPS, IRS) containing only representative states (see 2. X). Moreover the safety model encodes he intended behavior, and from its structure, safety test cases can be derived. It thereby restricts the possible inputs into the SHUT and the set of possible separately behaviors of the SOT.Hence, to reduce the amount of testing and guarantee the quality of testing the model checker will search those most frequently entered states and generate the corresponding safety test cases without searching the whole state spaces. The selection of states is based on the safety requirements (Sills). Generall y speaking, the safety model can be seen as a test selection criterion generate safety-related test cases. Figure 4 shows the corresponding flow chart. 1 . The system safety model in the form of a finite state machine (FSML) is transformed into the input language of the model checker tool (SPIN) 2.Each test requirement of a given safety criterion is formulated as a temporal logic expression (LET). 3. Based on the Markova model of a system, the state space is divided into three subsets. 4. In term of these subsets, the negation of each expression of the formula is verified by the model checker. If there is an execution path in the model that does not satisfy the negated formula then it is presented by the model checker as a counter-example. This path becomes a test sequence that satisfies the original test requirement. 5.The inputs and outputs that form the executable test case are extracted from the counter-example or are derived by a corresponding guided simulation of the model. 13 Figure 4: Test Case Generation Framework according Gang You et al. (Source: 4. 2 Statistical Testing As already mentioned in 2. 1 reliability is defined as the conditional probability that the system will perform its intended function. This chapter will link the reliability of a system with the Markova usage model (see 2. 3). Let f: be a function that shows the failure probability of a software. The argument D represents the possible usage set of the software.Each element AXED is a usage path from quo (initial operation) to send (final operation) The relation between software reliability R and failure probability F is: R=l -F (2). In the assumed model the failure behavior of the software only depends on its usage path X and not on the input. This means that the input domain corresponding to the used X is homogeneous. The simplest way of obtaining unbiased reliability estimation of the software is to select N test paths XSL, XX, †¦ , CNN according to the usage model. The exult of the function f(Xi) is 1 if the path fails and O otherwise.Then the arithmetic 14 mean of f(Xi) is an unbiased estimate PEP(f(X)), which is the mathematical expectation of the software failure probability under transition matrix P. Hence, the software reliability can be expressed as R=l -PEP(f(X)) [3]. Critical operations are infrequently executed in real applications. This generates the problem that development organizations have to spend too much time when performing adequate statistical testing. Although one can overcome these drawbacks by increasing the execution probabilities of critical operations during statistical entire software under test. Yang Going et al. 3] found a possible approach to overcome this problem: Importance Sampling (IS) Based Safety-critical Software Statistical Testing Acceleration. IS Based Safety-critical Software Statistical Testing Acceleration This chapter presents the Is-based software statistical testing acceleration method. It ensures that the cr itical operations tested adequately by adjusting the transition probabilities in the matrix of the usage model, and at the same time, produces the unbiased reliability of the software under test. The IS technique reduces simulation run times hen estimating the probabilities of rare events by Monte Carlo simulations [3].For complex software with a large model matrix, the simulation procedure is often extremely time consuming. To overcome this problem, Yang Going et al. ‘s approach adopts a simulated annealing algorithm to calculate the optimal matrix Q. This widely used optimization method employs stochastic techniques to avoid being trapped in local optimal solution. The 16 exact mathematical explanation of this algorithm is complex and would be out of the scope of this paper. [3] 4. 3 Method Comparison Although model-based and statistical testing follow completely different approaches, the challenges are very similar.Both methods have to limit the extent and complexity of tes ting. Model-based testing reduces the number of test cases by restricting the state space domain of the Markova chain usage model. Whereas statistical testing reduces the number by changing the relation between critical and normal test cases with help off likelihood ratio. 5 Conclusion Today an increasing number of safety-critical applications are controlled by computer software. Therefore effective testing tools are required to provide a high degree of safety and to reduce severe failures to a minimum. The paper focused on

Why Stay Connected

To stay connected with people we love, admire or simply want to do business with is not as hard as it seems. Thanks to social media we have the ability to communicate through the social web with Just a click of a button. With so much information to share, I believe people use computers everyday for social relationships, functionality, colonization, context and commerce because it provides a user friendly experience that's inviting and receptive. In today's society, social networking has become like an operating system where every experience can be social and user friendly.For most people, the web is a viable tool that is used everyday of the week from the sounding of the alarm clock, until television puts us to sleep. This tool is capable of transporting information through text, audio, video or graphics across the world and can go virtually in an instant to and from anyone with a device and web access. It's beneficial sharing personalized and accurate content with friends, family or business associates who rely on the web and value staying connected while developing social relationships. When developing social relationships it's important to stay open and accessible at all times.Since people can now enjoy connecting with family and friends for free on social sites like Backbone, it allows loved ones from other countries to communicate without incurring expensive phone bills. Sometimes Internet use can cause a decline in face-to face time with families. In the article Successful Farming, A 2009 survey of 2,000 households by the University of Southern Californians Enablers Center for the Digital Future reveals that 28% of Americans admit that they spend less time with members of their household. During the past decade, Merganser survey show that shared family time ranged from 22. 6 to 29. 8 hours per month (Devise, C. 09 pig. 61). These statistics coincides with the explosion of social networks. The article also goes on to mention that Passbooks user base catapu lted to 200 million in 2009 from 140 million in 2008. The survey points out that 52% of users say the Internet is â€Å"important† or â€Å"very important† in sustaining relationships. But how important does the functionality play in business relationships? When considering the sites purpose for users through Functionality, the function of the site must be fulfilled. When a business positions itself to sell products, the site must be able to describe these items along with a summary about the company.According to the article, Web Site Functionality (Barnes, 2010), it lists three rules of function for companies to have success in selling their products. The first rule is to â€Å"be quick and to the point. † Companies shouldn't subject their visitors to flash and distracting images on the sales page of the site. The goal here is not to loose your visitor before you sell them. The second rule is â€Å"think like a visitor, not like yourself. † This particul ar strategy helps the visitor to better understand what you are selling because of how simple it is to read and access the product. Simplicity her is the key.The third rule is â€Å"assist, don't constrain. † What this rule is clearly stating is treat your visitors like guess in your house. Show courtesy in the way you respond on your site, if visitors type an invalid quantity field. Instead of saying â€Å"Invalid Quantity,† say, â€Å"Please enter only whole numbers in Quantity. † This approach helps the visitors relax and feel comfortable, as they will have a better overall experience on the site. Delta Air Lines is a good example of a company that has taking strides to accommodate their customers without going through the technicalities of booking lights and hectic checking-inn's.According to (NYSE: DEAL) Delta was named â€Å"Top Tech- Friendly U. S. Airlines† by Popcorn magazine for its airport recharging stations (Technology & Business Journal, 201 2). This recognition was based on Delta having in-flight Wi-If on more domestic flights than any other carrier and smartened APS with innovative features including baggage tracking, airport check-in and the ability to book tickets directly from Backbone, while enjoying 24-hour customer service via Twitter. Since customer service is first class for some companies is there a way for there company sites to become more social?I believe one of the best ways for every page to have a social experience, is through Colonization. Identity technologies like Backbone Connect, Opened, as well as existing identities will soon colonize the web in the near future, making every webbing a social experience even if they don't want to participate. Using Backbone for example, if you look at majority of television and radio adverts, you are quickly directed to the company's Backbone address. This call of action is a form of branding, which allows a company to communicate in a timely and informal manner.T his teeth invites feedback and interaction with customers. Many brands are taking advantage of corporate pages like Coca Cola, which is the leading product on Backbone with over 20 million people â€Å"liking† its page (Towns, 2011). This style of Colonizing allows companies to inject their personality onto a web page, pushing employee's to post comments, photographs and videos to promote a company's personality in a genuine way. A company would not move in the right direction if the context weren't complete.This is why content is so important because it personalizes an accurate account of the company's marketing campaign. Content is the fuel of the social web in that it brings a product launch to life through short films, videos, commercials, and emails by the product developer all-starting with a simple concept. According to the NYSE, Nielsen released results of a new research study revealing online content as a connective tissue for Internet users with 27 million pieces of content shared on a daily basis (NYSE: AOL, 2011).The results also show that 53% time spent on the Internet is directly attributed to content consumption, and consumer social graphs play a key role in sharing content with email as the primary sharing tool. Nearly one-quarter of all social media messages contain links to content (NYSE: AOL, 2011). In the web search world, one of the most undocumented forms of Content is word- of-mouth. According to the Keller Fay Group's Talk Track, as much as 90% of word-of- mouth takes place offline (Hawthorne, Chromic, 2012). This form of content is dispersed and sporadic across the Internet.Many agencies and research companies pull their information from multiple sources, which focus on finding online word-of- mouth and tone in posts to blobs, chat rooms, consumer review sites, social networking sites, and viral videos. Depending on the clientele of a website, the reviews and overall impressions of a product may be marketed differently. So how c an word-of-mouth be leveraged through social commerce? When communities define different products and services, you are speaking of Commerce, which is online and already social.A Nielsen report (2011) highlighted that 90% of consumers trust the opinions of people they know. 70% trust anonymous ratings and reviews posted online, compared to Just 33% who trust online banner ads. Many brands have shied away from social media when asking for the sale. For example, Mobile Web has become a key focus for developers as a recent survey points out that 66% of the developers rate Mobile Web support as a top priority for 2012 (Computers, Networks ; Computers, 2012). The article goes on to say that Bloodmobile's one-click purchase flow will help developers to accelerate revenue through direct carrier billing.This offers customers a simple and easy payment flow, which translates directly to higher revenue. Another example of how commerce solutions are becoming easier for consumers is the partners hip with Ecocide, Inc. , producer of the worlds first platform-neutral, rope-in store builder widget and website builder Yolk to provide its e-commerce solution to Yolk customers. Yolk is the leading website builder that lets individuals and small businesses create websites with no technical expertise required (Computer Weekly New, 2012).Yolk's Online Store package powered by Ecocide allows users to quickly create a store by setting it up in their Yolk dashboard and dropping it into any page of a new and existing site. This all-in-one solution is for customers looking to create a website and start selling online. When you look at the many brands that use social applications, it's not only in erect support of e-commerce activities, but also its in anticipation that it will deliver on the bottom line at some point in the near future.Such brands like Dell, who use Twitter for sales promotions, Trapdoors who uses Backbone to funnel sales and Matter, the giant toy store who launched Shop Together which enables people in different locations to see what each other see's and talks about different products using an onscreen chat window. This social application has generated billions of dollars to major companies who understand the importance of social networking. In conclusion, we now understand better the need to connect and share with people globally and how cost effective and easy it is to stay in touch with friends, family and businesses through the social web.Social relationships are birthed from social networks, which become operating systems that provide services to customers who are looking for a social experience online. Without a sites purpose being as simple and easy to follow, consumers will be lost in translation. That's why it is so important for networking sites to create a user-friendly atmosphere that's inviting and receptive. The reasons why people use the web are simply for the benefits. Without social relationships, functionality, colonization, cont ext and commerce, there will be no desire to stay connected online.