Bottlenecks in a Process Essay

Bottleneck can slow down production and diminish efficiency. According to Li, Chang, & Ni, (2009) â€Å"quick and correct identification of the bottleneck locations can lead to an improvement in the operation management of utilizing finite manufacturing resources, increasing the system throughput, and minimizing the total cost of production† (p.1). The operation of preparing dinner will be analysis to find where the process has a bottleneck and how to eliminate or reduce the bottleneck time. Identifying the Bottleneck in the Process When preparing dinner marinating the meat has proven to be a bottleneck for the process. For example steak can require up to 24 hours to be marinated, holding production for 24 hours is a problem. Choosing a different cut of meat can reduce the time and can require as little as one hour for the meat to marinate. In the production of preparing dinner an hour is still a bottleneck in the process. Considering it can be one hour to marinate the meat, then twenty minutes to cook while side dishes such as rice will only take about thirty minutes to cook the two process can not be run parallel on product will be undercook while the other overcook. Data Collection Reviewing the data collected over the last four week in preparing dinner the cycle of the process is longer when meat requiring longer marinating time is used in the preparation of dinner. During week two on the second day the preparation of dinner took sixty minutes. The marinating of the meat prevented the process of the side dish to begin because it would cause the meal to be overcooked. The key is to schedule the process capacity carefully to ensure the bottleneck is eliminate or reduce. One step taken to reduce the bottleneck time to make long-term decision regarding the process and have the meat marinates overnight. Avoiding last minute decision increases the efficiently in the process time. Conclusion According to Kamauff, (2010) †bottleneck-point in a process where the flow slows and work-in-process accumulates because of a difference between capacity of one process and the demand of the next†(p.32). Identifying the bottleneck can help plan the process more efficient to reduce the waste of resource such as time. Preparing dinner can be time consuming but with long-term planning and decision making improvements can be made to the process to reduce time. The extra time can be utilize do spend more time with the family reviewing the day.

How Is Love Presented in Romeo and Juliet and Two Poems from the Shakespeare Literary Heritage

How is Love presented in Romeo and Juliet and two poems from the Shakespeare Literary Heritage Love is presented in a variety of different ways in Romeo and Juliet and my chosen poems from the Literary Heritage: Stop All the Clocks and Sonnet 130. For instance, in Romeo and Juliet Shakespeare is attempting to challenge the tradition of courtly love that was prominent in the Elizabethan era. He is suggesting that the tradition of courtly love is artificial and essentially false. Courtly love was a hidden love between the nobility in medieval times.In Sonnet 130 Shakespeare has a different goal; he is attempting to challenge the traditional Petrarchan sonnet that was popular at the time. These sonnets were grand declarations of love but also seemed rather overblown and unnecessarily dramatic. W. H. Auden’s poem Stop All the Clocks is dramatic and very emotional, however this is justified in this instance as his lover has died. This would undoubtedly be an exceedingly traumatic e xperience. In Act 1 Scene 1 of Romeo and Juliet love is presented as being like a poison that can infect a person.Shakespeare uses a metaphor in a very interesting manner in this scene to show this. For instance, when Montague is describing how his son Romeo is acting due to Romeo’s unreturned love for Rosaline he states, â€Å"As is the bud bit with an envious worm, Ere he can spread his sweet leaves to the air, Or dedicate his beauty to the same. † He is suggesting that Romeo is like a flower â€Å"bud† that won’t open itself up to the world because it’s been poisoned from within by parasites. Just like the flower has been poisoned by parasites, Romeo has been poisoned by love.Romeo only goes out at night and shuts himself away in a darkened room during the day. This metaphor helps the audience to see that love can be a dangerous force that causes people to act in unusual ways. Shakespeare uses this dramatic metaphor to show the intensity with wh ich Romeo seems to love Rosaline, however he does this to raise questions about how real Romeo’s love is for Juliet when he meets her later in the play. Shakespeare is depicting the lovesickness stage of courtly love and challenging how real it is by his use of this over the top metaphor.Additionally, in Act 1 Scene 1, love is presented as a complicated and contradictory thing. Shakespeare uses oxymorons effectively to show this idea. For example, when Romeo is describing the love he feels for Rosaline to his cousin Benvolio he states, â€Å"O brawling love, O loving hate†, amongst a series of other oxymorons. Shakespeare here uses oxymorons to show that the love Romoe feels for Rosaline is something that gives him great joy but also great pain at the same time. He is in love with Rosaline and that is wonderful but he hates the fact that she will not return his love.This allows the audience an insight into the intensity with which it appears Romeo loves Rosaline. This reinforces Shakespeares goal of setting up a situation in which the audience will doubt Romeo’s love for Juliet later in the play. In Act 1 Scene 5 love is presented in an over the top and overly dramatic way. Shakespeare uses hyperbole extremely well here to show this. In this scene Romeo and his friends have crashed Capulet’s party and he catches his first glimpse of Juliet. When he does so he states that she â€Å"doth teach the torches to burn bright! This is hyperbole because obviously Juliet cannot literally teach the torches to burn bright. The hyperbole is used to show that Romeo thinks that Juliet’s beauty overshadows everyone and everything in the room. The audience is supposed to once again feel the intensity with which Romeo can love, however the audience is left with doubts about how real this love is because just a few scenes earlier he was in the depths of despair over Rosaline. Shakespeare uses Romeo’s hyperbole and Romeo’s quick s witch from Rosaline to Juliet to question how real courtly love is.Furthermore, this over the top dramatic presentation of love continues through Romeo’s description of Juliet’s beauty. Shakespeare switches to using a simile to continue this trend. For example, he continues his description of Juliet by saying â€Å"It seems she hangs upon the cheek of night, Like a rich jewel in an Ethiope’s ear. † Again, this shows that Romeo feels that Juliet beauty stands out from the crowd just like an shiny earring would stand out in an African person’s ear. This encourages the audience to further doubt how real Romeo’s love for Juliet is as his language becomes more and more over the top.If Romeo can so quickly forget Rosaline is his love for Juliet genuine or just another infatuation? Shakespeare is attempting to drive his point home that courtly love is a false and unrealistic version of love through his depiction of Romeo’s descriptions of Ju liet. This over the top overly dramatic depiction of love is continued before Romeo and Juliet kiss for the first time. Shakespeare uses the sonnet form to show their conversation leading to their first kiss as this was the traditional form of exaggerated love poetry at the time. Within the sonnet he uses extended Christian metaphor to great effect.As Romeo is trying to flirt with Juliet he states â€Å"(taking  JULIET’s hand)  If I profane with my unworthiest hand, This holy shrine, the gentle sin is this. † Basically as he takes her hand he states that her hand is like a holy place that his sinful hand is not worthy to touch. He is using a religious metaphor to put Juliet up on a pedestal as a thing of purity. This further adds to the audiences doubt about how real Romeo’s love for Juliet is as they are left wondering has Romeo simply switched his attention to Juliet because she is returning his affection whereas Rosaline didn’t want to.Shakespeare is continuing to show the falseness and fickleness of courtly love through Romeo’s over the top language. The sonnet form is perfect to use here as it was a form often used to depict courtly love. Furthermore, the overly dramatic depiction of love continues through this sonnet. Again this is within the extended Christian metaphor of the sonnet. When Romeo is just about to kiss Juliet he says â€Å"O, then, dear saint, let lips do what hands do. They pray; grant thou, lest faith turn to despair. † Here his â€Å"prayer† is the kiss he is about to give to Juliet.The metaphor is once again intended to show the purity of Romeo’s love for Juliet as his kiss is not sinful but is more like a thing of purity: a prayer. At this stage, the audience should be completely doubtful of how real Romeo’s love for Juliet is as he continues to use overly cliched and over the top language to show his devotion to her in combination with the fact that he has completely forgotten about Rosaline. Shakespeare’s use of Christian metaphor is intended to further mock the courtly love tradition as he is saying that courtly love is false and not in fact pure at all.

English Speaking Proficiency of Ip Student in the University of Mindanao Essay

Research Design This research was designed using qualitative way of gathering information such as opinion, ideas, and knowledge of every respondent. The researchers preferred to use an interview guide for the participant within the campus of the University of Mindanao. The method was design and suited to facilitate the respondents of giving their answer that will be helpful on pushing down the information needed to this study to attain. The goal of their research and answer the question stated in chapter 1. The researchers used this kind of method because it was a fact-finding study with fully sufficient and accurate interpretations of the findings. The researchers also believed that this was the most suitable method to use. Research Subjects In order to accumulate information such as opinion, ideas, and knowledge, the researchers preferred the research subjects of this study are the two (2) respondents coming from the students of the University of Mindanao. There were 2 researchers subjects who were interviewed for this study. Respondents one (1) is a 19 years old coming from the Island City of Samal, singe, and presently pursuing the degree of Education major in English. She is one of the Indigenous Student in the University of Mindanao as one of the privilege scholar in the said institution. She belongs to the Uvo Manuvu tribe. Subject/respondents two (2) is also an Indigenous student in the University of Mindanao, she’s proud to represent her tribe as Ata. She is 20 years-old, taking up Bachelor of Secondary of Education major in English as one of the Government scholar in the said institution. She was crowned as â€Å"Hiyas ng Kadayawan† way back 2010. The two (2) respondents was driven down to the list ing of all courses and year level in the university to prevent biases. For purpose of confidentiality, the names of respondents are kept. Letter for memo CHOCOLATE HEAVEN EMPORIUM MEMORANDUM TO: All Staff FROM: Management T.C. DATE: November 9th, 20– SUBJECT: STAFF CHRISTMAS PARTY It’s that time of year again. As you all know, Christmas is our busiest season of the year. Every year it is a struggle for management and supervisors to find the time and energy to organize a staff Christmas party. This year, we have decided to postpone the Christmas party until after our busy season. Party Details * Date: Second or third Saturday in January (T.B.A) * Theme: Beach * Food: Caribbean * Special events: Karaoke and belly dancing We apologize that the celebration will have to wait until the new year, but we guarantee that it will be worth the wait. Anyone interested in volunteering to help out with the event is encouraged to call Lucy, our events coordinator. Lucy’s cell phone number is 222-3098. Please contact Lucy outside of business hours regarding this matter. Thank you. T.C. Cover Letter for Trainer Peggy Wesson 54 Pinehurst Street, Apt. 4 San Francisco, CA 12345 123-555-1234 pwesson@unknown.com March 30, 20xx Ms. Carol Pilsner Director of Human Resources Do-Right Weavers 250 Bradonton Road South San Francisco, CA 12345 Dear Ms. Pilsner, Thank you for spending time on the phone with me this afternoon. I am definitely enthusiastic about applying for the position of trainer. I’m willing to do the required coursework on my own. In two months I can complete: * The â€Å"Train the Trainer† program at UC Berkeley Extension * John Capers Training Certification Is your schedule free for an interview soon? I’ll call you to see when we can meet. Again, thank you for encouraging me to take advantage of this career opportunity. Sincerely, Peggy Wesson Enclosure: resume

The Watergate Scandal Essay Example | Topics and Well Written Essays - 1500 words

The Watergate Scandal - Essay Example The Watergate Complex includes several administrative and hotel building located on the Potomac River in Washington, D.C., but unlike hundreds other complexes of similar caliber the Watergate is known to almost any adult citizen in the US and abroad. In fact, the event was so important that the term 'Watergate' is more commonly associated with a series of political scandals that culminated in constitutional crisis than with the hotel. The Watergate Scandal occurred during the presidency of Richard Nixon and began with arrest of five burglars at the Watergate hotel complex in Washington, D.C. and ultimately resulted in dramatic resignation of President Nixon on the 9th of August, 1974.In the months preceding the Watergate break-in, Nixon and his administration had been extremely preoccupied with their public image, and took every possible step to avoid negative publicity. The preoccupation was reasonable: Nixon's policies regarding the Vietnam War generated much criticism, and the lea king of the documents concerning the US involvement in the Vietnam War submitted to the New York Times by Daniel Ellsberg in 1971 only fueled the criticism (Bernstein and Woodward 165).In order to prevent further leaks, Nixon established a special unit nicknamed the "Plumbers". The unit led by G. Gordon Liddy and E. Howard Hunt (both of them were close to Nixon) took advantage of the situation to get involved in investigation of the private lives Nixon's critics justifying their actions with national security consideration. Evidently, the true motives underlying many actions of the Plumbers had more to do with protecting the President's public image from criticism and preparing the base for the forthcoming elections (Bernstein and Woodward 207). The Committee to Re-Elect the President (CREEP) was established in 1972 and in December the same year G. Gordon Liddy, one of the Plumbers, was appointed as general counsel to the Committee. This appointment made CREEP a powerful weapon in the hands of Nixon with Liddy behind most of CREEP's activities. In 1972, Liddy designed a serious intelligence operation against the Democrats. One of the steps within the framework of that operation was a small-scale burglary of the Democratic National Headquarters in the Watergate office complex (Westerfeld 35). On June 17, 1972, five burglars were arrested by police inside the Democratic National Headquarters in the Watergate office building in Washington DC. Four of the burglars were Cuban anti-Communists and one White House employee: they were caught during an attempt to bug the office. The Washington police convicted James McCord, Virgilo Gonzalez, Bernard Barker, Eugenio Martinez, and Frank Sturgis of 2nd degree burglary (WHT 820). The burglars had an impressive amount of tools and materials, namely a walkie-talkie, two 35-millimeter cameras, lock picks, pen-size teargas guns, advanced bugging devices, and 40 rolls of unexposed film. Besides, they also had $14,000 in hundred dollar bills that could be traced directly to CREEP (Bernstein and Woodward, 15-16). Therefore, it immediately became clear that those people had links to Nixon's Committee to Re-Elect the President. Thus, McCord was a former CIA officer employed by the CREEP as a security director. However, despite charges filed against Liddy and Hunt for their role in organization of the burglary no serious damage was done to CREEP's reputation. There were at least two reasons for that: firstly, the information disclosed at that moment was too incomplete which resulted in huge underestimation of CREEP's role; secondly, Nixon's leading positions during the pre-election period allowed him to successfully avoid any further investigations and accusations at that time (Westerfeld 45). Nixon read about the break-in on the 18 of June and the whole thing seemed so weird to him that he did not believe it and initially dismissed it as a political trick (Nixon 625-626). Charles Colson, a

The International Implications of Competitive Monetary Expansion and Assignment

The International Implications of Competitive Monetary Expansion and Currency Devaluation - Assignment Example It is important for the Indian economy to stabilize its currency in the long run to remain attractive for foreign investments. This can be achieved by direct intervention of Central Bank in the Forex market. Other efforts to stabilize the currency include liberalization of the interest rates and limiting intra-day limit of foreign dealers. Another way to boost the economy is to improve trade balance. This can be done by raising subvention for small and medium term exporters to increase the level of exports. Use of hedging strategies on part of the importers and exporters could minimize losses arising from the exchange rate. Also in respect to the Indian market, it has been observed that the depreciation of rupee has not been passed on to consumers, as majority of the items like, cooking gas, kerosene and fertilizer, are subsidized. Hence, removal of subsidies will help the government to pass the costs to people in order to discourage imports of these items. The fiscal deficit of the government is likely to reduce if higher price of energy is passed onto consumers, thereby bringing down the prices for energy imports. Finally, the government can create favorable environment in the country for the purpose of attracting FDI. FDI has been identified as a credential source of funding for most emerging countries like, India and China. Therefore, proactive liberalization of FDI in the Indian economy will be helpful in attracting investors. Enhancing freer investment in sectors, such as, retail, can help to draw in fresh investments in the economy. 13 Tapering monetary policy adopted by many developed nations is putting pressure on the emerging countries. On December 2013, the Federal Reserve Bank of the U.S.A. announced that it would begin to lower bond purchases by $10 million on a monthly basis. Since announcement of this news, the emerging economies began to feel weight of the probable consequences of this action. Possible

Listeria monocytogenes Research Paper Example | Topics and Well Written Essays - 1000 words

Listeria monocytogenes - Research Paper Example The bacteria also infect animals, particularly ruminants (Low & Donachie, 1997). The name Listeria monocytogenes evolved from different names since 1926. Its former names were Erysipelothrix monocytogenes, Cornybacterium parvulum, Cornybacterium infantesipticum, Bacterium monocytogenes and Bacterium monocytogenes hominin (Uniprot Taxonomy, 2009). The genus Listeria was classified under the Cornebacteriaceae family until 1973. Molecular studies classified it as distinct and the Family Listeriaceae was created within the order Bacillales (Todar, 2009). Listeria contamination can be transmitted through animal feed, manure, mastitic cows, plant and animal products, and through bacterial biofilms. Prevalence of the pathogen in food processing plants is caused by the entry of raw meat and poultry from animals that are infected with Listeria (Dharmarha, 2008). The pathogen can cross to surfaces of floors, sinks, water, equipment, and workers. L. monocytogenes persists with time and contaminate the environment where processing wastes are disposed. Moreover, Listeria is able to survive even under low temperatures. Infected food sold to consumers can cause major outbreaks. Eating contaminated food allows the entry of L. monocytogenes into the digestive system. After ingestion, the immune system of the host is activated and targets the invading bacteria which are engulfed by phagocytes. Phagocytosis is a major response of cell-mediated immunity (CMI), which is mechanism against L. monocytogenes. CMI can be enough to prevent infection, but in cases where the immune system is compromised or weak, as in young children and the elderly, L. monocytogenes can evade the host defense system and cross the intestinal barrier (Dharmarha, 2008). L. monocytogenes is also able to cross the blood-brain barrier and the placental barrier resulting in infection of the brain (encephalitis and meningitis) and the unborn fetus

Diffences in the Spirometry Results Essay Example | Topics and Well Written Essays - 4000 words

Diffences in the Spirometry Results - Essay Example This may become difficult to achieve as the test procedures are often undertaken in infrequent settings (Standardizations of spirometry, 1994). For reproducibility in the spirometry results comprehensive training, reliability of the equipment and, well standardized measurement procedures are crucial and without any one of these dynamics, variations in the results of the spirometry are bound to occur (John, Bulton, Walter, Baker, 2006). In this project I will explore and analyze the variations that occur in the results of spirometry under different circumstances of use. In particular, I will focus on how these variations are influenced as well as different factors affecting these discrepancies. Such a study will give insights on the working of spirometry, a testing procedure that is rapidly gaining popularity and acceptance. The study will also test its usefulness and its weaknesses or flaws. It is also unclear that whether physicians are following any kind of guidelines or using othe r patient characteristics to determine when to use this technique for accurate results, which ultimately reflects upon the unreliability of the results obtained from spirometry based on practice differences (JOO, FITZGIBBON, & LEE, 2011.) Misdiagnosis resulting from inadequate spirometry test procedures can lead to inappropriate treatment and suboptimal patient outcomes. To promote optimal patient management and treatment, increase awareness of the differences between testing procedures or factors affecting the results of the procedure are to be determined ( Tinkelman , Price, Nordyre, Halbert, 2006). COPD is a condition which worsens with time and leads to decline in lung function and more than half of the COPD patients are often misdiagnosed as Asthma patients(National heart, lung and, blood institute, 2003), that is why it tends to be underdiagnosed and under treated Top of Form(JOO,FITZGIBBON, & LEE, 2011.) As spirometry depends on cooperation between the subject and the examine r, thus it depends on both technical as well as personal factors. If this variability can be diminished and results accuracy can be improved, then abnormalities can be more easily detected. (Miller, 2005) Top of Form Literature review: Spirometry is used in a variety of venues ranging from small clinical settings to large testing facilities for both screening and clinical evaluations. Physicians or other health care staff conduct the tests, help others in conducting it or just evaluate the results. But results of this testing procedure depend upon multiple factors and if any of these factors are affected the results are flawed or wrongly reduced leading to misdiagnosis (Townsend,2011). In some studies, it was observed that most relevant spiromtric results measured by general practitioners were comparable to those measured in pulmonary function laboratories. (Schemer, Jacobs, Hartman, Folgering, Bottema &,Van).In another study, positive effects of training on the spirometry test resu lts were estimated, this study also stated that spirometry in general practice does not satisfy the full criteria for acceptability and reproducibility. (Eaton, Garette, Mercer, Whitlock & Rea, 1999) But these studies were conducted as a research exercise so the findings may have some of its limitations. (SCHERMER TR, CROCKETT AJ, POELS PJ, VAN DIJKE JJ, AKKERMANS RP, VLEK HF, & PIETERS,2009). One study aimed to identify the

A Responed to Wolf Prix Lecture Essay Example | Topics and Well Written Essays - 250 words

A Responed to Wolf Prix Lecture - Essay Example c space versus private space; enumeration of seven lines applicable to architecture; operating in an open society as contrasted to a closed society; and generally on thinking outside the box; of breaking conventional rules to create architectural structures that are innovative and remarkable. One is therefore inspired with the speaker’s words and the lessons that were emphasized in the lecture. Apart from signifying that architectural students should not simply have theoretical knowledge, skills and abilities to design and build; contemporary students of architecture should manifest the desire to be innovative, creative and to think outside the box and soar to great heights. The presentation shown was appropriate for the lecture and enhanced the emotional appeal and interest of the audience. By showing magnificent and unconventional architectural structures, the audience was made to realize that it takes more than just the ability to absorb the minimal framework to be an effective and successful architect – it takes the burning desire to be radical: in thinking, in designing and in building. Prix, Wolf. Sci-Arc Video on the Lecture of Wolf Prix . 2011. Web. 6 December 2011

The British Royal Marine Corps' Influence on The United States Marine Research Paper - 1

The British Royal Marine Corps' Influence on The United States Marine Corps - Research Paper Example However, in recent times there have outliers to this assumption. Cases of colonialism are still evident in this modern period. Logic dictates that this practice should have been abandoned alongside other practises like slavery. It is expected that the natives should not be all too willing to undergo colonization. As such, in this respect this paper is dedicated to the study of Indian attitudes and reactions to the presence of the British Empire in their land. When the British gained control of India, they resulted to treating the Indians akin to slaves. Stating that the British treated Indians cruelly would be an understatement. This was bound to evoke feelings of reprisal in the Indian community. In order to understand the complexities of the reactions of the Indians towards the British, it is imperative to first analyse the manner in which the British authority treated the Indians. The facts that have been publicized concerning the British rule in India give a glimpse of the sad realties that faced the Indian population at that time. With respect to the British population in India at the time, the Indians did not have any rights. An example of the treatment they faced is best exemplified by the fact that they were not allowed to walk on the sidewalks next to the British. Failure to adhere to this and any other baseless law resulted in the incarceration of the Indian outlaw. It is right to refer to wrong doers as such, since they basically received treatment akin to outlaws. While inside the jails and prisons, the Indians were severely beaten and abused by the commanding British police officers. The treatment of the Indians at that time is akin to the treatment of the black population by the Americans in the nineteenth century. It is however imperative to note that this had not always been the status quo. In fact, at the beginning of the British presence in India, the relationship between the British and Indians was quite

Positive and negative impacts of social networking sites Essay Example for Free

Positive and negative impacts of social networking sites Essay THE POSITIVE PART Social networking Web sites are helping businesses advertise, thus social networking Web sites are benefiting businesses economically. Social networking Web sites are helping education by allowing teachers and coaches to post club meeting times, school projects, and even homework on these sites. Social networking Web sites are enabling advancements in science and medicine. Job hunting Stay in touch with friends Positive causes/awareness THE NEGATIVE PART The very nature of such sites encourages users to provide a certain amount of personal information. But when deciding how much information to reveal, people may not exercise the same amount of caution on a Website as they would when meeting someone in person. This happens because: the Internet provides a sense of anonymity; the lack of physical interaction provides a false sense of security they tailor the information for their friends to read, forgetting that others may see it. Sharing too much information on social networking sites can be problematic in two ways: firstly, it can reveal something about you that you’d rather your current or future employer or school administrator not know, and second, it can put your personal safety at risk. Another potential downside of social networking sites is that they allow others to know a person’s contact information, interests, habits, and whereabouts. Consequences of sharing this information can range from the relatively harmless but annoying—such as an increase in spam—to the potentially deadly—such as stalking. Another great issue of concern with social networking web sites is that of child safety. Read more:  Positive and Negative Effects of Social Media Essay Research has shown that almost three out of every four teenagers who use social networking web sites are at risk due to their lack of using online safety. (Joly, Karine, 2007) A lot of the web sites do have an age requirement but it is easily bypassed by the  lying about of one’s age. Even if they don’t lie about their age the average age requirement is around fifteen years old. Predators may target children, teens, and other unsuspecting persons online—sometimes posing to be someone else—and then slowlyâ€Å"groom† them, forming relationships with them and then eventually convincing them to meet in person In Touch with The World Family living abroad can be kept abreast of the latest happenings in your world as quickly as those living next door. Friends who you haven’t seen since school, and who have since moved away, are able to keep in touch. Social networking sites have made the world a smaller place. Conclusions As with most things in life there are positive and negative sides to social networking, both of which we have now explored. Ultimate belief is that when done in moderation, with checks and balances on how younger people in particular are using them, and with a firm grasp being kept on reality at all time, social networking sites are neither evil or a Godsend. They’re somewhere in between. Social networking isn’t for everyone, but it’s now such a massive part of all our lives, whether we embrace or reject the notion, that it can no longer be ignored. Privacy  Social networking sites encourage people to be more public about their personal lives. Because intimate details of our lives can be posted so easily, users are prone to bypass the filters they might normally employ when talking about their private lives. Whats more, the things they post remain available indefinitely. While at one moment a photo of friends doing shots at a party may seem harmless, the image may appear less attractive in the context of an employer doing a background check. While most sites allow their users to control who sees the things theyve posted, such limitations are often forgotten, can be difficult to control or dont work as well as advertised. Decreased Productivity While many businesses use social networking sites to find and communicate with clients, the sites can also prove a great distraction to employees who  may show more interest in what their friends are posting than in their work tasks. Wired.com posted two studies which demonstrated damage to productivity caused by social networking: Nucleus Research reported that Face book shaves 1.5% off office productivity while Morse claimed that British companies lost 2.2 billion a year to the social phenomenon. New technology products have become available that allow social networks to be blocked, but their effectiveness remains spotty. A False Sense of Connection According to Cornell Universitys Steven Strogatz, social media sites can make it more difficult for us to distinguish between the meaningful relationships we foster in the real world, and the numerous casual relationships formed through social media. By focusing so much of our time and psychic energy on these less meaningful relationships, our most important connections, he fears, will weaken. social networking has become a major part of society. Even big businesses and celebrities are jumping on the social networking bandwagon. Many people wake up each day and check social websites first thing in the morning instead of reaching for a newspaper. According to Mashable.com, as of June 2010, American Internet users spend more than 22 percent of their online time using a social networking site. Since people are spending such a large amount of time surfing social networks, it is important to point out some of the positive and negative effects that social networking can have on a society. Helping Small Businesses Social networking can help small businesses in a big way. Traditional mediums such as print magazine ads and radio commercials can cost thousands of dollars that some small businesses just dont have in a down economy. Social networking allows small business owners to connect with prospects and clients for free, costing nothing but time and energy. Marketers at small companies can post coupons to Facebook groups or run promotions on Twitter. In addition to generating revenue this way, companies also can get positive and negative feedback directly from consumers. Addictive A negative aspect of social networking is that it can be addictive. Spending  too much time on social networking sites can cause people to lose focus on tasks at work or around the house. Social networking needs to be used in moderation. If someone is spending so much time on social networks that they are not sleeping enough hours per night or are ignoring friends and family that want to spend time with them in person, social networking can be a serious problem. Sharing Too Much Another drawback to social networking is that some users are simply sharing too much information. People can lose their jobs or a friendship over leaking information on social networks. Even if a user of a social site has her privacy settings on the highest level, their information can still be passed on by someone on their friends list. It doesnt take much for an angry follower to copy and paste a status or download a picture if they are looking for revenge.

Study On The Applications Of Numerical Analysis Computer Science Essay

Study On The Applications Of Numerical Analysis Computer Science Essay It finds applications in all fields of engineering and the physical sciences, but in the 21st  century, the life sciences and even the arts have adopted elements of scientific computations.  Ordinary differential equations  appear in the  movement of heavenly bodies (planets, stars and galaxies);  optimization  occurs in portfolio management;  numerical linear algebra  is important for data analysis;  stochastic differential equations  and  Markov chains  are essential in simulating living cells for medicine and biology. Before the advent of modern computers numerical methods often depended on hand  interpolation  in large printed tables. Since the mid 20th century, computers calculate the required functions instead. The interpolation  algorithms  nevertheless may be used as part of the software for solving  differential equations. INTRODUCTION TO NUMERICAL ANALYSIS AND METHODS The overall goal of the field of numerical analysis is the design and analysis of techniques to give approximate but accurate solutions to hard problems, the variety of which is suggested by the following. Advanced numerical methods are essential in making  numerical weather prediction  feasible. Computing the trajectory of a spacecraft requires the accurate numerical solution of a system of  ordinary differential equations. Car companies can improve the crash safety of their vehicles by using computer simulations of car crashes. Such simulations essentially consist of solving  partial differential equations  numerically. Hedge funds  (private investment funds) use tools from all fields of numerical analysis to calculate the value of stocks and derivatives more precisely than other market participants. Airlines use sophisticated optimization algorithms to decide ticket prices, airplane and crew assignments and fuel needs. This field is also called  operations research. Insurance companies use numerical programs for  actuarial  analysis. The rest of this section outlines several important themes of numerical analysis. History of Numerical Analysis The field of numerical analysis predates the invention of modern computers by many centuries.  Linear interpolation  was already in use more than 2000 years ago. Many great mathematicians of the past were preoccupied by numerical analysis, as is obvious from the names of important algorithms like  Newtons method,  Lagrange interpolation polynomial,Gaussian elimination, or  Eulers method. To facilitate computations by hand, large books were produced with formulas and tables of data such as interpolation points and function coefficients. Using these tables, often calculated out to 16 decimal places or more for some functions, one could look up values to plug into the formulas given and achieve very good numerical estimates of some functions. The canonical work in the field is the  NIST  publication edited by  Abramowitz and Stegun, a 1000-plus page book of a very large number of commonly used formulas and functions and their values at many points. The function values are no longer very useful when a computer is available, but the large listing of formulas can still be very handy. The  mechanical calculator  was also developed as a tool for hand computation. These calculators evolved into electronic computers in the 1940s, and it was then found that these computers were also useful for administrative purposes. But the invention of the computer also influenced the field of numerical analysis, since now longer and more complicated calculations could be done. Direct and iterative methods Direct methods compute the solution to a problem in a finite number of steps. These methods would give the precise answer if they were performed in  infinite precision arithmetic. Examples include  Gaussian elimination, the  QR  factorization method for solving  systems of linear equations, and the  simplex method  of  linear programming. In practice,  finite precision  is used and the result is an approximation of the true solution (assuming  stability). In contrast to direct methods,  iterative methods  are not expected to terminate in a number of steps. Starting from an initial guess, iterative methods form successive approximations that  converge  to the exact solution only in the limit. A  convergence test  is specified in order to decide when a sufficiently accurate solution has (hopefully) been found. Even using infinite precision arithmetic these methods would not reach the solution within a finite number of steps (in general). Examples include  Newtons method, the  bisection method, and  Jacobi iteration. In computational matrix algebra, iterative methods are generally needed for large problems. Iterative methods are more common than direct methods in numerical analysis. Some methods are direct in principle but are usually used as though they were not, e.g.  GMRES  and the  conjugate gradient method. For these methods the number of steps needed to obtain the exact solution is so large that an approximation is accepted in the same manner as for an iterative method. Discretization Furthermore, continuous problems must sometimes be replaced by a discrete problem whose solution is known to approximate that of the continuous problem; this process is called  discretization. For example, the solution of a  differential equation  is a function. This function must be represented by a finite amount of data, for instance by its value at a finite number of points at its domain, even though this domain is a continuum. Different Areas And Methods under Numerical Analysis The field of numerical analysis is divided into different disciplines according to the problem that is to be solved. One of the simplest problems is the evaluation of a function at a given point. The most straightforward approach, of just plugging in the number in the formula is sometimes not very efficient. For polynomials, a better approach is using the  Horner scheme, since it reduces the necessary number of multiplications and additions. Generally, it is important to estimate and control  round-off errors  arising from the use of  floating point  arithmetic. Interpolation, extrapolation, and regression Interpolation  solves the following problem: given the value of some unknown function at a number of points, what value does that function have at some other point between the given points? Extrapolation  is very similar to interpolation, except that now we want to find the value of the unknown function at a point which is outside the given points. Regression  is also similar, but it takes into account that the data is imprecise. Given some points, and a measurement of the value of some function at these points (with an error), we want to determine the unknown function. The  least squares-method is one popular way to achieve this. Solving equations and systems of equations Another fundamental problem is computing the solution of some given equation. Two cases are commonly distinguished, depending on whether the equation is linear or not. For instance, the equation  2x  + 5 = 3  is linear while  22  + 5 = 3  is not. Much effort has been put in the development of methods for solving  systems of linear equations. Standard direct methods, i.e., methods that use some  matrix decomposition  are  Gaussian elimination,  LU decomposition,  Cholesky decomposition  for  symmetric  (or  hermitian) and  positive-definite matrix, and  QR decomposition  for non-square matrices.  Iterative methods  such as the  Jacobi method,  Gauss-Seidel method,  successive over-relaxation  and  conjugate gradient method  are usually preferred for large systems. Root-finding algorithms  are used to solve nonlinear equations (they are so named since a root of a function is an argument for which the function yields zero). If the function is  differentiable  and the derivative is known, then  Newtons method  is a popular choice.  Linearization  is another technique for solving nonlinear equations. Solving eigenvalue or singular value problems Several important problems can be phrased in terms of  eigenvalue decompositions  or  singular value decompositions. For instance, thespectral image compression  algorithm  is based on the singular value decomposition. The corresponding tool in statistics is calledprincipal component analysis. Optimization Optimization problems ask for the point at which a given function is maximized (or minimized). Often, the point also has to satisfy someconstraints. The field of optimization is further split in several subfields, depending on the form of the objective function and the constraint. For instance,  linear programming  deals with the case that both the objective function and the constraints are linear. A famous method in linear programming is the  simplex method. The method of  Lagrange multipliers  can be used to reduce optimization problems with constraints to unconstrained optimization problems. Evaluating integrals Numerical integration, in some instances also known as numerical  quadrature, asks for the value of a definite  integral. Popular methods use one of the  Newton-Cotes formulas  (like the midpoint rule or  Simpsons rule) or  Gaussian quadrature. These methods rely on a divide and conquer strategy, whereby an integral on a relatively large set is broken down into integrals on smaller sets. In higher dimensions, where these methods become prohibitively expensive in terms of computational effort, one may use  Monte Carlo  or  quasi-Monte Carlo methods  (see  Monte Carlo integration), or, in modestly large dimensions, the method of  sparse grids. Differential equations Numerical analysis is also concerned with computing (in an approximate way) the solution of  differential equations, both ordinary differential equations and  partial differential equations. Partial differential equations are solved by first discretizing the equation, bringing it into a finite-dimensional subspace. This can be done by a  finite element method, a  finite differencemethod, or (particularly in engineering) a  finite volume method. The theoretical justification of these methods often involves theorems from  functional analysis. This reduces the problem to the solution of an algebraic equation. Applications Of Numerical Analysis Methods and Its Real Life Implementations, Advantages Etc. NEWTON RAPHSON METHOD: ORDER OF CONVERGENCE: 2 ADVANTAGES: 1. The advantage of the method is its order of convergence is quadratic. 2. Convergence rate is one of the fastest when it does converges 3. Linear convergence near multiple roots. REGULA FALSI METHOD: ORDER OF CONVERGENCE: 1.618 ADVANTAGES: 1. Better-than-linear convergence near simple root 2. Linear convergence near multiple root 3. No derivative needed DISADVANTAGES 1. Iterates may diverge 2. No practical rigorous error bound GAUSS ELIMINATION METHOD: ADVANTAGES: It is the direct method of solving linear simultaneous equations. 2. It uses back substitution. 3. It is reduced to equivalent upper triangular matrix.: 1. It requires right vectors to be known. GAUSS JORDAN: ADVANTAGES: 1. It is direct method. 2. The roots of the equation are found immediately without using back substitution. . It is reduced to equivalent identity matrix. The additional steps increase round off errors. 2. It requires right vectors to be known. GAUSS JACOBI METHOD: 1. It is iterative method. 2. The system of equations must be diagonally dominant. 3. It suits better for large numbers of unknowns 4. It is self correcting method. GAUSS SEIDEL METHOD: 1. It is iterative method. 2. The system of equations must be diagonally dominant. 3. It suits better for large numbers of unknowns 4. It is self correcting method. 5. The number of iterations is less than Jacobi method. Real life Applications Area of mathematics and computer science. Applications of algebra Geometry Calculus Variables which vary continuously. Problems(application areas) 1. Natural sciences 2. Social sciences 3. Engineering 4. Medicine 5. Business.(in financial industry) Tools of numerical analysis Most powerful tools of numerical analysis à  Computer graphics à  Symbolic mathematical computations à  Graphical user interfaces Numerical analysis is needed to solve engineering problems that lead to equations that cannot be solved analytically with simple formulas. Examples are solutions of large  systems  of algebraic equations, evaluation of integrals, and solution of differential equations. The finite element method is a numerical method that is in widespread use to solve partial differential equations in a variety of engineering fields including stress analysis, fluid dynamics, heat transfer, and electro-magnetic fields. In hydro static pressure processing In high hydrostatic pressure (HHP) processing, food and biotechnological substances are compressed up to 1000 M Pa to achieve various pressure-induced conversions such as microbial and enzyme inactivations, phase transitions of proteins, and solid-liquid state transitions. From the point of view of thermodynamics, Heat transfer leads to space-time-dependent temperature fields that affect many pressure-induced conversions and produce undesired process non uniformities Effects related to HHP processing can be studied appropriately by use of numerical analysis because in situ measurement techniques are barely available, optical accessibility is hardly possible, and technical equipment is expensive. This reports on two examples, where numerical analysis is applied successfully and delivers substantial insights into the phenomenon of high-pressure processing. Calculation E.g TSP problem (traveling salesman problem) to travel no. of cities in such a way that the expenses on traveling are minimized. à   NP-complete problem. à   optimal solution we have to go through all possible routes à   numbers of routes increases exponential with the numbers of cities. Modern Applications and Computer Software Sophisticated numerical analysis software is being embedded in popular software packages e.g. spreadsheet programs. Buisness Applications:- Modern business makes much use of optimization methods in deciding how to allocate resources most efficiently. These include problems such as inventory control,scheduling, how best to locate manufacturing storage facilities, investment strategies,and others. In Financial Industry Quantitative analysts developing financial applications have specialized expertise in their area of analysis. Algorithms used for numerical analysis range from basic numerical functions to calculate interest income to advanced functions that offer specialized optimization and forecasting techniques. Sample Finance Applications Three common examples from the financial services industry that require numerical algorithms are: à ¢Ã¢â€š ¬Ã‚ ¢ Portfolio selection à ¢Ã¢â€š ¬Ã‚ ¢ Option pricing à ¢Ã¢â€š ¬Ã‚ ¢ Risk management   In market Given the broad range of numerical tools available a financial services provider can develop targeted applications that address specific market needs. For example, quantitative analysts developing financial applications have specialized expertise in their area of analysis.