Monday, September 30, 2019
Competitor Of Starbucks Essay
There are the known international company that become the competitor for the Starbucks. There are: Coffee Bean & Tea Leaf The endurance and popularity of The Bean, as it is affectionately referred to by devotees, can be attributed to the high standards that were established from the beginning. From trend-setting drinks like the World Famous Ice Blended, to the employees who become a part of the communities they work in, The Coffee Bean & Tea Leaf à ® has discovered the formula for a successful coffee and tea company. San Francisco Coffee The company that serve fresh coffee sourced from the best coffee farms on this green earth and the roast master, uses company to concoct blends and roasts that have the people wringing their hands, anxious for their next hit. Secret recipe Secret Recipe Cakes & Cafà © offers a friendly and personalised full-service dining experience for customers and incorporates a modern contemporary and vibrant interior concept with comfort ambience, and great food. It provides a great respite for customers to enjoy good food and quality time with friends, family or associates, after a long day at work. Old town white coffee To be Asia Pacificââ¬â¢s leading white coffee brand, providing high quality products to customers globally All the competitors try to win the demand of the customer who loves to drink coffee. Each company have their own strategy and uniqueness of their product. THE MACRO AND MICRO ENVIRONMENT THAT AFFECT THE STARBUCKS COMPANY MACRO ENVIRONMENT For the Starbucks micro and macro environment factor, we can use PESTEL element to evaluate and observed about the Starbucks. The (PEST) element included: Political factors The first factor which shall be kept in mind while studying the macro environment of Starbucks is the political aspect. It has been seen that, Starbucks has significant levels of presence in the coffee market. Starbucks consists of various types of products for government offices, corporate offices. The growth of Starbucks has increased and it means there are lots of demands about the Starbucks Coffee. However, in certain country, the political try to avoid the Starbuck because some of the countries try to boycott the Israel product. The cases of the boycott make the Starbucks have problem for their expansion of the business. Indirectly, the political of the country will affect the performance and growth of the Starbucks. Economic factors Economic factors such as recession which hard a big impact to the different organizations also to the consumer ability to purchase their product due to been unemployed and having debts. The way income is distributed among the individuals impact the marketing activities such as higher income earners, middle and low earners. These economic factors influence marketing segmentation and decisions. The exchange rate also will affect the Starbucks Company. When the currency decreases their value, it affects the monetary policies. Most of the supplier of the coffee comes from outsider. When the monetary decrease, it will affect the higher cost and the raw material become expensive. Finally, this situation makes the price of the Starbucks become expensive. Itââ¬â¢s also become risk for Starbuck in making its coffee with the higher cost. Social factors Social factors that influence marketing decisions are such as demographic factors which is relating to the population where when the populationà increases creates good opportunity for the marketing activities but if it decreases results to great impact in the market. Age, marketers tend to target their market according to the number of age available in an area. Behaviour also may influence the marketing decision where by some ethnics may not be able to purchase certain products due religion aspects also due to consumerââ¬â¢s different in taste, style and fashion some may like the products others may find them not attractive. Another than that, the social also included the changing in culture, taste and health consciousness. The culture of Malaysia who loves the coffee made the demand of Starbucks increase. However, Starbucks also need to learn about the culture among the country. Starbucks is International product and well known. Some of the country most prefers tea compare than coffee. That means , that is one of the challenges for Starbucks to come out with variety of product. Health consciousness of people also influences company to come out with healthy product for its customers. They need to plan new product that concern about the good healthy. It will provide opportunity to Starbucks to expand its business. Technological factors The fourth factor which shall be kept in mind while evaluating the macro environment for Starbucks refers to the technological aspect. Starbucks being one of the reputed coffee houses had a robust distribution strategy which helped them to stay ahead of the competition. Starbucks try to variety their distribution strategy within use the internet and mobile application. Starbucks launched a mobile payment system. This technological advancement helped the customers to pay while sitting at the store with the help of their smart phones. Starbucks also launched an I-phone mobile payment application. With thisà application, the customers would be able to have an access of their favourite Starbucks card application. The use of technology will help the enterprise to break through the various distribution channels & be a step ahead of its immediate competitors. MICRO ENVIRONMENT The micro environment factors are about internal aspect of Starbucks. The micro environment are evaluate using Porterââ¬â¢s 5 forces model). There are about bargaining power of buyer, bargaining power of supplier, threat of substitute product, threat of new entrant and rivalry among competitors. Rivalry among existing competitors is high within the industry Starbucks operates in with major competitors like San Francisco coffee, Old Town White Coffee, Coffee Bean & Tea Leaf, Dunkin Donuts and thousands of small local coffee shops and cafes. Starbucks customers possess large amount of bargaining power because there is no and minimal switching cost for customers, and there is an abundance of offers available for them. The threat of substitute products and services for Starbucks is substantial. Specifically, substitutes for Starbucks Coffee include tea, juices, soft drinks, water and energy drinks, whereas pubs and bars can be highlighted as substitute places for customers to meet someone and spend their times outside of home and work environments. Starbucks suppliers have high bargaining power due to the fact that the demand for coffee is high in global level and coffee beans can be produced only in certain geographical areas. Moreover, the issues associated with African coffee producers being treated unfairly by multinational companies are being resolved with the efforts of various non-government organizations, and this is contributing to the increasing bargaining power of suppliers. However, the threat of new entrants to the industry to compete with Starbucksà is low, because the market is highly saturated and substantial amount of financial resources associated with buildings and properties are required in order to enter into the industry.
Sunday, September 29, 2019
Lord of The Flies Human Allegory Essay
In Lord of the Flies William Golding uses allegories to illustrate the human psyche. Different characters are used to represent different parts of an individualââ¬â¢s mental structure: the impulses of the Id, the rationality of the Ego, and the moral understanding of the Superego. Golding carefully describes each characterââ¬â¢s actions to coincide with each part of the psyche. Jack, Piggy, Simon, and Ralph are characters in the story that represent the psyche. According to Sigmun Freud, the Id is the impulsive part of the psyche. Evidence of this is the killing of the sow. To elaborate, the killing of the sow has been deemed a ââ¬Å"symbolic rape,â⬠symbolizing manââ¬â¢s sexual desire. The manner that the boys go about in killing the pigs is based on sexual desire and violence; all parts of the Id. An example of this is the boys chant they recite after the hunt, as well as the lust they receive when chasing the sow. The pigââ¬â¢s head also represents the Id in the boys. The pigââ¬â¢s head becomes evidence of their atrocities brought on by impulsive and animalistic behavior. The boys wanted satisfaction, ultimately achieving it through the brutal murder of the sow. Furthermore, Goldingââ¬â¢s Jack has been interpreted to personify the Id. An exemplar is his thirst for blood which gives him gratification. He takes great pride in hunting and killing pigs, eventually smearing the pigââ¬â¢s blood on his face. This is violent and primal, not very productive for the group and is meant as a source of satisfaction. Hunting should be pointless, the boys are on an island surrounded by fruit. Golding states, ââ¬Å"â⬠¦gorging fruit in the forest.â⬠(pg.25). Jack is too busy wanting to hunt that he forgets about being rescued. One instance being early in the novel when a boat appears on the horizon; Jack allows the fire to burn out while hunting; eliminating aspirations of rescue. Moreover, as Jack embodies the Id; Ralph represents the ego. Ralph epitomizes the reasoning among the group. Sine Ralph is the leader, it becomes his responsibility to keep order. The ego makes rational choices while satisfying the Id. For instance, Ralphââ¬â¢s main task is to keep the order and control Jack and his impulses. Ralph delegates jobs: Jack and the choir become hunters and the rest will build the huts. For example, Ralph comes up with the idea the idea that who ever holds the conch gets to talk. Also, Ralph is the one who comes up with the idea to get the boys names. Golding writes,â⬠â⬠¦If a ship comes near the islandâ⬠¦We must make a fire.â⬠(pg.35). This quote shows Ralphââ¬â¢s rational thinking on how to get rescued. Ralph thinks of the sensible thing to do for instance, Golding states ââ¬Å"What was the sensible thing to do?â⬠(pg.196). Due to Ralphââ¬â¢s rational thinking, he hasà been interpreted to manifest the ego. Furthermore, readers have drawn conclusions that Piggy represents the super ego, Piggy acts like the conscience for the group; for example, Golding inscribes ââ¬Å"Whatââ¬â¢s grown-ups goinââ¬â¢ to think? Young Simon was murdered.â⬠(pg.157). This quote communicates how Piggy attempts to guilt the boys for the terrible crime they committed. Piggy comprehends moral values and tries to guilt Ralph for participating in the murder of Simon. Throughout the story Piggy constantly reminds Jack and Ralph about the priorities. He nags them incessantly about the fire, as well as; the importance of the conch and assemblies, the proper way to do a task, and how to act properly. Golding writes, ââ¬Å"There was no Piggy to talk sense.â⬠(pg.196). This quote justifies how Piggy acts like the boys conscience. In addition to Piggy, Simon has also been interpreted to represent the super ego based on his actions throughout the novel. For example, when the little kids wanted the fruit Simon got it down for them. Another example is when Simon attempts to warn the others that the beast is them. Golding states, ââ¬Å"ââ¬ËYou knew, didnââ¬â¢t you? Iââ¬â¢m part of you?â⬠(pg.136). Moreover, Simonââ¬â¢s moral values become evident when he gives meat to Piggy. Golding exclaims, ââ¬Å"â⬠¦Shoved the piece of meat over the rocks to Piggy.â⬠Simons moral values on how to treat others, based on his actions in the novel clarifies how readers could draw conclusions that he embodies the super ego. Subsequently, interpretations on the novel have revealed Piggyââ¬â¢s death to represent the Idââ¬â¢s complete take over of the island. Golding exclaims, ââ¬Å"The rock struck Piggy a glancing blow â⬠¦the body of Piggy was gone.â⬠(pg.180). Without Piggy, there is no moral reasoning to help make the right choices. After Piggy dies, Jack attempts to kill Ralph to eradicate rational thinking. This is an example of the Idââ¬â¢s superiority and strength over the ego, without the presence of the super ego. Without the super ego deciding the right from the wrong, the Id will take over. In the novel, had the naval officer not intervene, Jack would have completed the Idââ¬â¢s takeover of the egos by killing Ralph. As a final point, Golding uses Freudââ¬â¢s philosophies regarding the psyche to show human nature in Lord of the Flies. Ralph, Jack and Piggy represent the different parts of the psyche and what happens when one falls. Jack represents the Id with his impulses to kill. Piggy represents the super ego through his moral understanding, while Ralph symbolizes the ego, caught between the Id and super ego. Golding illustrates in ââ¬Å"Lord of the Fliesâ⬠that the Id is most powerful and comes out when a man is subjected to a primitive mindset. The further into this mindset, the stronger the Id becomes resulting in a loss of the ego and super ego. Works Cited Golding, William. Lord of the Flies. New York: The Berkley Publishing Group, 1954.
Saturday, September 28, 2019
Arab Marriage and Family Formation
Arab Marriage and Family Formation Introduction Arab societies are undergoing major changes as new patterns of marriage and family formation emerge across the region. For long decades, early marriage was the common pattern in the Arab world. However, it is no longer the only pattern. The average age of marriage is rising and more Arab women are staying single for a long time and sometimes they donââ¬â¢t get married at all. These new marriage trends in the Arab World are part of a world global phenomenon. The changes of marriage trends in the Arab world reflect the social and economic changes taking place in the region. Arab economies moved away from agrarian based systems which supported both early marriage and extended family numbers [Hoda R.and Magued O., 2005]. The majority of the Arab populations live in cities working in industrial or service sectors. Today, Arab women are more educated and more likely to work outside their homes for personal and financial independence. These changes create a new image of wom an and change her past traditional role as a mother and household member. The objective of this research is the studying of marriage issue in the Arab world because marriage is one of the key important factors that determine the social and economic present and future in the Arab countries. Both problems of early marriage and increase of average age of marriage of marriage are explained. Finally, a recommended solutions and actions are proposed in order to naturalize the two problems for decreasing the negative impacts and creation of better Arab societies. Importance of Marriage in Arab Society Family is the main concern in Arab societies. Family is considered the main social security system for young and elder people in Arab countries. In Arab culture, parents are responsible for children well into those childrenââ¬â¢s adult lives, and children reciprocate by taking responsibility for the care of their aging parentsââ¬âresponsibilities that Arabs generally take on with great pride. Marriage for Arabs is thus both an individual and a family matter. In Arab societies, marriage is considered the turning point that defines prestige, recognition, and societal approval on both partners, particularly the bride. Marriage in Arab societies is considered the social and economic contract between two families. Marriage is also considered the right form of socially, culturally, and legally acceptable sexual relationship [1]. Early marriage in Arab World Early marriage is any form of marriage that takes place at age of 18 years. Early marriages are often associated with enforcement. Forced marriage is the marriage conducted without full consent of both parties and sometimes with a threat [2].From human rights point of view, early marriage is considered a violation of human rights conventions. In Arab societies- especially developing countries- early marriage, is considered a means of securing young girlsââ¬â¢ future and protecting them. Wars and social problems m ay leads also to early marriage as in Palestine, where the intifada has led to earlier marriage. Many countries in the world have declared 18 as the minimum legal age of marriage. However, more than millions of young girls are expected to marry in the next decade according to the international statistics. [2].
Friday, September 27, 2019
Proposal and Report Assignment Example | Topics and Well Written Essays - 2500 words
Proposal and Report - Assignment Example I have attached presentation details with my proposal which illustrate meaningful experience of education. Students are quite more rational in todayââ¬â¢s world than ever. They are highly concerned with the cost they spent on studies and the expected benefits that they would fetch from it. They would also keep an eye on the possible fields that their education would take them. A research showed that students having bachelorââ¬â¢s degree expected to earn more dollars than with a high school education. has an embarked global fleet of development and research in information technology and computer science, which will increase potentially among students and pursue them to achieve professional goals. The real experiences of professionals who showed their competency in their specific field would help students to understand the essentials of education. would offer students to graduate with major in Information Technology and Computer Science. The student can contribute to his/her nation to a long run after passing higher education. They would also get other benefits like handsome salaries , knowledge and expertise. In presentation, the focal point would be on career pathways in higher education information technology and computer science. I will discuss with your students the professional point of views in education field. Their opinion will help students to make their mind to face the challenges in their field. I will also discuss the demands and salaries scale with your students. My presentation would not be stressful or boring for students, I would like an interactive environment with students. I extremely appreciate and encourage them to ask questions or queries related to topic whenever they like. My requirement composed of technology like Internet access and a data projector so that it would be feasible for students to see the presentation. Later, I will provide leaflets for students to
Thursday, September 26, 2019
Bean and Jerry Ice-cream Company Essay Example | Topics and Well Written Essays - 4000 words
Bean and Jerry Ice-cream Company - Essay Example The company started growing successfully due to some chunky ingredients and some unusual and catchy flavor. It was the scoop style which was adopted by them to sell ice-cream but they had to go for the pint way. By the year 1984 they had already been successful in taking the ice-cream company public in the city of Vermont. They got themselves registered under the Security and Exchange Commission (SEC) allowing them to buy stock nationwide. Ben and Jerry were considered as good and old boys from the sixties who preferred conducting their meetings in a festive manner than in the stereotypical way of carry out any corporate meeting. They actually tried to show the masses that their company is not a place where people can work with greatness but it also tries to portrait that they are somewhere socially related as well responsible to the whole community and the society. ââ¬Å"Caring Capitalismâ⬠is something which these two young people believed in and they eventually donated aroun d 7.5% of the pretax profit for the wellbeing of the society and for those social causes which included Centro for Better Living and Healing Our Mother Earth. Haagen-Dazs is the largest competitor of Benn and Jerry and the former has always been choosy in while distributing ice-creams. It has always aimed the elite class of the society. The funky image which the latter has shown has drawn attention of the younger crowd with catchy eyes. Their commitment to the society is an honest and an obvious approach. The mission statement of Benn and Jerry is the creation as well as demonstration of new concepts of the corporate for linked prosperity. The mission consists mainly of three parts. Underlying this mission is of course the in determination to seek a new as well as creative concepts and styles for addressing all the new parts, while holding this deep respect in case of every individuals outside and inside the company as well as for all the communities of which they consider themselve s to be a part. The company is operated on the basis of a sound and efficient economic system, which helps them to grow in the future and as well as increase the values of their shareholders on the other hand. The economic structure also aims at improving the opportunities of the workers and also is able to give away reward points. The company is also active in such a way that it is recognized everywhere as well as the important role which the company has in shaping the society locally, nationally and internationally. Underlying this particular mission of the company, Benn and Jerry is the creative and new ways of approaching and addressing all these three new parts, while they also try to uphold deep respect and virtue for each and every individuals outside and inside the company and eventually all the communities of which they consider themselves to be a part. 2. Product Benn and Jerry distribute, make and set all the best quality for the natural ice-creams and the dairy products related to a huge variety of unusual flavors which are made from the dairy product of Vermont. Their product which is super premium ice-cream is rich in the butterfat content that is 12%, where as this content is only 6-10 percent in other ice-dream. While ensuring quality of their product and of course to maintain the good old roots in their own community they preferred buying the creams from the
Advertising to Children Coursework Example | Topics and Well Written Essays - 9500 words
Advertising to Children - Coursework Example I would like to thank my interviewees for giving up their valuable time to speak to me during their hectic schedules. I also appreciate all the support and guidance offered by my tutor and lecturers. This help has been invaluable to me. My dissertation aims to explore the current problems pertaining to marketing trends involved with advertising aimed at the young audiences and small children. It is reported that Food companies alone spend a whooping $10 billion annually on advertising aimed at young children and this is alleged to have caused the American children to consume almost a third of their daily calories from junk food. The problem of advertising to children is not just restricted to television advertising but extends to the increased use of Internet games, product placements, character licensing and an increased use of word of mouth campaigns to increase sales of products to the young consumer base.The Food,Toy and gadget industry is adamant to defend itself upon any accusation of irresponsible advertising to little children with the likes of themes like parental responsibility and First Amendment rights. The Paper discusses whether or not it is the sole responsibility of these corporate giants to act agai nst self-interest or that the Government should regulate such advertising more seriously. The Dissertation aims to balance these villainous notions of the modern advertisers which have been assigned to modern marketers and whether it is time parents took responsibility for their own actions rather than laying the blame on advertising. Essentially the aim is to question the models of childhood which the are assumed in this debate by policy makers and marketers alike in order to explore the way forward for regulation and the burden of responsibility to the advertisers or the parents. I would like to clarify at the outset that my methodology in this dissertation is largely based on a literature review of contemporary sociological perspectives on childhood and the debates that have because a part of the controversy of advertising to children. The methodology then analyses a two interviews to reconcile the findings of the literature review. The Dissertation restricts itself to the UK discourse on children and advertising and is aimed at contributing to a greater understanding the debate and policy on advertising and children, and to encourage the further practical research in this area armed with these new perspectives. Thus this paper is an exploration into the empirical and polemical literature yet it neutrally considers both sides of the argument and ontology of advertising to children. Tongue-in-cheek social skeptics have often subscribed to the term "adults-in-waiting" or "pre-adults" when describing the modern technologically aware child (James et al., 1998). At the same time the modern marketer knows that the modern child in "independent" and a potential customer which means that certain strategies will be built by marketers and marketing researchers to capture and compete on capturing this segment of the consumer base.(Kline, 1993).The modern marketer thus knows that small children in particular form their future preferences in their early formative stages but the older they grow the more difficult they are to convince.(Lowden, 1999). There are so many industries depending on their bread and butter for effectively capturing the children's consumer base and therefore whether its Mc Donalds or Toys r' Us ,KFC or Disney Land. These exclusively child-oriented industries have come under recent fire from media, sociologists and the political community alike and a heated debate as to their ethical premise has followed which has raised an outcry
Wednesday, September 25, 2019
Correlation of how many student took the LSATs and how many students Essay
Correlation of how many student took the LSATs and how many students actually got accepted into law school - Essay Example In essence, Law Schools will try to place higher LSAT requirements for students so that they are protrayed as having higher standards and so that they compete effectively. LSAC implemented the requirement to ensure uniformity in the criteria that member schools used to admit students to their law programs. However, the validity of LSAT has come under controversy considering that there is a possibility that students who might be proficient could be left out by LSAT requirement. A study conducted by Domino & Domino established that 54% of those students who passed the LSAT actually proved that the test was valid. The study was conducted on first year students using their average scores in various Law Schools and involved 726 students (12). However, Domino & Domino also explain that the values were very different across schools. Controversies have also recently arisen over cheating where some students hire other people to take the tests for them. The general realization from these findings is that there are other factors that influence the LSAT other than the standardization requirement by the schools. For instance, Law Schools might make the tests extremely difficult so that they appear as having high quality students and therefore influence the admission of their graduates to the mainstream practising of the Law. The essence of tests is not to lock out candidates but to ensure that only those candidates with the correct qualifications are admitted. The following paper seeks to establish the nature of correlation between the number of students who take LSAT and the ones who actually get admitted in Law schools so as to determine whether most students who take the exams fail or pass. According to Burdette, ââ¬Å"LSAT is usually administered by the Law School Admissions Council a non-profit organizationâ⬠¦Ã¢â¬ (4) and the general realization is that Law Schools realized that they needed
Tuesday, September 24, 2019
E-Commerce Merchant Server Software Functionality And High Cost Of Essay
E-Commerce Merchant Server Software Functionality And High Cost Of Websites Maintenance - Essay Example E-commerce packages are intended to provide the functionality of time and money saving. However, the customization of websites cost a high amount. An E-Commerce suit is only reliable and robust in functionalities when it supports the different business models, reporting system and visual management tools. Additionally, the software packages also handle the direct payment transaction from customers or through the payment gateway. Merchantââ¬â¢s server software handles the sensitive information through a server socket secure layer (SSL) or digital certificates (Srikanth and Dhanapal 2012). Merchant Server Software is the essential component of the system that connects the web server for the order fulfilment, inventory and other systems in the offices. Main functions of the merchant server software include the processing of the payment, and exchange very critical information like payment authorization, tax, shipping, invoicing, and payment authorization. Other functionalities of a me rchant server are the database querying, web page composition in a real time, user profiling, and targeting of the contents based on the userââ¬â¢s interest and history. There are many open source software, which provide the functionality as a Merchant Server. Security is the priority-based requirement for every entrepreneur in the market. Buyers require the confidentiality for transactions via the credit cards. Shoppers are worried about fraudulent means of fake entrepreneurs. Security precautions can save the buyers from a big loss of money and preserve the business for the future. By adoption of fraudulent tactics, one can face the mistrust from customers and wrath of the companies issuing the credit cards. A secure shopping cart system provides the essential integration of payment transactions. Both, open source and licensed propriety software are available in the market (Richmond 2012). A shopping cart is embedded with the credit card verification. However, a third party ser vices like eBay or Etsy may be achieved for security of payment processing. PayPal is another third party, which charges a trivial fee and provides the secure in and out transactions for customers (Lagorio 2010). Why is a website so costly to maintain? Building a website also requires its maintenance. Regular updates and maintenance of a website leads to the extra cost. A company may cut the expenses by removing the intermediaries. Maintenance of a website requires the well skilled staff and trained people. A company launches the business via the website but there are no enough people who visit the website and purchase products. Website development and maintenance are the critical factors in order to attract the market shares and create loyal customers. Website maintenance encompasses all those activities, which are necessary for the operational integrity of a website. The cost of keeping the website operational and current depends on the complexity and size of the website. A well d esigned requires a high cost of maintenance because it requires effective updates (Avila-Weil and Regan 2007). Another factor that determines the maintenance cost of a website includes that how many times features require to be updated. A business owner estimates the length of the time required for updating the features. A static website needs to be updated weekly or monthly that requires less cost than maintenance of the interactive product catalogue. Nature of business also impacts the maintenance cost of a website. For example, an e-commerce website requires
Sunday, September 22, 2019
Live Scan Term Paper Example | Topics and Well Written Essays - 1000 words
Live Scan - Term Paper Example These services are generally required by the police department to keep records and track criminals. This service has also been used in airports throughout to quickly get the details of passengers and immigrants. This service is however also utilized by universities and other departments for checking employee records before employments. This information to these departments is usually available through Department of Justice (DOJ). Live scan uses the advanced digital photography methods to capture the images of fingerprints. For this the person needs to press his or her fingers on a screen or scanner. The image is scanned, captured and stored in electronic form on computer databases. Thus the whole process is somewhat similar to the scanning of documents in a scanner and storing the captured images on the computer in the form of a file. Scanning fingerprints however needs some special type of scanners. As these scans are stored in computers, it becomes easy to analyze the fingerprints without much hassle. These can be then shared with any departments around the world as it is easy to send the files through computer networks. "Live scan instruments must be able to collect fingerprints from a wide cross section of people-including those with very fine, worn, scarred or cracked fingerprint ridges and varying degrees of skin moisture content." (Cross Match Technologies, 2007). Most of the instruments provide scans for well ridged fingerprints giving very low quality scans for people with dry skin and other problems. This makes it very difficult to identify such fingerprints. Younger people are well suited for live scan fingerprints as they generally have healthy skin with no such problems to hinder the fingerprinting process. For people with too dry or too moist skin there is a problem in capturing the scans. For this purpose silicone membranes have been developed which are in the form of transparent sheets. These sheets are kept on the screen of the instrument and fingers are pressed against the sheet. This membrane helps in enhancing ridges of the fingers thereby providing well defined scans for people wi th varied moisture content in their skin. There is another problem faced by these instruments and that is of very high volume scans due to which the fingerprints often get mixed up. This problem is also addressed by these silicone membranes. The membranes last for very long and when they need replacement it is very easy to peel them off and place a new one without taking any time. Other advantages include the protection of the capturing screen of the instrument as the membrane is placed on it. Another it is very easy to clean the membrane once it gets dirty. There is no need of application of any liquid or special cloth to clean it. It is done simply by placing a tape on it so that the dirt or any oils, etc. stick to it and get away making the membrane ready to be used again. Although most of the instruments use optical scanning technique in live scan systems, there have been recent developments in this field prompting the use of ultrasonic technique for the same. The fingerprints using ultrasonic systems have been seen to be of better quality than the optical ones. The ultrasonic technique again addresses the same problems of varied moisture c
Saturday, September 21, 2019
The Pollution Caused by Cruise Ships Essay Example for Free
The Pollution Caused by Cruise Ships Essay Cruise ships and the industry as a whole are vital to the economic stability of the local port cities in which they dock at daily. These ships carry up to 3,000 passengers who spend enormous amounts of money at tourist locations around the world. It is estimated that millions of dollars are generated and placed into the tourism markets annually. This is great news for local communities that depend on the cruise ship industry in order to survive, however it is bad news when it comes to the environment. Cruise ships create a massive amount of waste which ends up polluting our water ways and sending vast levels of pollutants into the air as well. These large ships typically produce around 170,000 gallons of waste water, 21,000 gallons of sewage, 6,400 gallons of bilge water, and 1 ton of solid waste per day ((Brooks Dunn, 2012). Unfortunately, these waste products are dumped into our oceans, seas, rivers, and lakes. There are numerous laws, regulations, and guidelines to prevent such things from happening but most of the cruise ship operations have found a way to work around them. They understand that states such as Alaska and Washington prohibit dumping of waste materials in their waters. The cruise ship corporations have taken advantage of the relaxed laws of places like British Columbia (B.C.) which for the most part allows them to release their waste products into their water areas. This presents a dilemma for the cruise ship industry because they ultimately have to decide between making a profit and being environmentally sound. Corporations such as the cruise ship industry have an ethical responsibility to meet all environmental regulations and laws regardless of where they are sailing. Corporations have an obligation to the general public and that includes making sure they are meeting standards set forth by the government. Environmental groups have a major influence on the general public and can create enough pressure where the reputation of a company is tarnished and sales start to decrease. It would be to a corporationââ¬â¢s advantage to show the general public that it is going above and beyond meeting environmental needs regardless of the rules in a particular country, state, etc. When sailing in international waters cruise ships should go by the strictest of all guidelines. Ethically, a corporation should set the standard for all others to follow. They canââ¬â¢t allow relaxed rules to be an excuse for creating environmental damage. The general public would feel betrayed to learn that a company built on having good, ââ¬Å"cleanâ⬠, vacation fun is in fact dirtying up the water ways. CEOs of such corporations should exercise due care and professional skepticism. They should ask how my actions will affect the water ways in the future. In addition, executives should question the rules of other countries and do everything in their power not to take advantage of weak laws. Port cities depend on tourism to generate revenue within their communities. It is of the most importance to balance the needs of tourism against the needs of maintaining an environmentally safe society. Compromise is essential in the effort to reduce as much waste going into our waters as possible. These tourist destinations should always work with the U.S. Environmental Protection Agency to develop reasonable plans that can be accomplished slowly in order to prevent pollution now and in the future. It is understood that cruise ships will always have waste products to get rid of so decisions should be based on what is good for the environment not solely on tourism. The responsibility to maintain a clean and healthy environment is up to everyone. Corporations have a major responsibility as well because they can influence the thoughts, ideas, and beliefs of the average citizen. If a major corporation promotes the idea of improving air and water quality then it can influence the actions of other corporations. The cruise ship industry is in the position to set the standards for all to follow. They have the ability to show others that no matter the location or circumstances that a standard set of rules should always be followed. They should not let profit get in the way of doing the right thing. In the long run doing what is expected is more important than profit. The general public would accept a rise in ticket prices for a cruise if they were informed that it is because of the environmental rules they are trying to follow. Profit is the main goal of any organization, but it should not come at the expense of peopleââ¬â¢s health and well being. If the proper research is conducted and coordination between countries is established then it should be no reason why environmental needs should not be met. The general public is the first priority of corporations and every effort of compromise should be attempted. References Brooks, L. J., Dunn, P. (2012). Business professional ethics for directors, executives accountants. (6th ed., p. 530). mason, oh: cengage.
Friday, September 20, 2019
Single Women And Depression Social Work Essay
Single Women And Depression Social Work Essay Depression in single, married and widowed/divorced employed mothers Mental health is gradually becoming a focus in todays society. Women are diagnosed with mental illness two-to-one compared to men. Some hypothesis to the reason for these unequal statistics include hormone differences, cultural stifling of womens creative expression leading to maladjusted coping mechanisms, or misdiagnoses by sexist doctors (News for Healthy Living, 1999). A womans circumstance highly influences her likelihood of developing an anxiety disorder. This paper will analyze the prevalence of mental illness, especially anxiety disorders and depression, among employed mothers who are either single parents, in a heterosexual marriage, or widowed or divorced. Afifi, Cox and Enns found that married women suffer from the fewest psychiatric conditions, never married women slightly higher, and divorced women have significantly the highest number of psychiatric diagnoses (2006). This is possibly because married women often have far less risky behaviors and lower mortality rates than their unmarried counterparts (St. John Montgomery, 2009). Financial hardships, low wages, working multiple jobs, unemployment, and lack of social support, contribute to depressive symptoms, though they have different effects on women with different relationship situations (Wang, 2004). These situations are merely predictors of depression not deciders and will affect single and married mothers differently. Single, widowed and divorced mothers will have higher stresses, and therefore depressive symptoms, relating to financial issues. While married women will have depressive symptoms more related to their relationship. People in unhappy marriages or those who are not satisfied with their partner may have high levels of depressive symptoms. Even more, being dissatisfied with ones living partner is correlated with depressive symptoms in women (St. John Montgomery, 2009). The coping mechanisms which are often associated with depression in married, single, and divorced or widowed women are generally negative and harmful to both themselves and their social relationships. Depression and alcohol problems are often co-morbid in both single and married women (Kelly, Halford, Young, 2000). In addition, depression and coping mechanisms often negatively affect the relationship between married women and their spouses. Depressed women and their partners report more destructive and inefficient ways of conflict communication and resolution (Heene, Buysse, Van Oost, 2007). More effective interventions should be reviewed to address not only the cause of the depression and depressive symptoms, but to introduce more operative coping mechanisms. Single Women and Depression Single employed mothers have a wide variety of stressors in their lives. These stressors are associated with a higher probability of developing an anxiety disorder, especially depression. Low income, low education, family size, and ethnicity are stressors which are highly associated with depression for single mothers (Afifi, Cox, Enns, 2006). The main stressors of a single mothers life are centered on her children and being able to provide for them. Those who were forced to work more than one job to provide for their family, especially those who were non-white, had an increased risk of developing major depressive disorder than their married counterparts (Wang, 2004). Often, the choice between spending more time at work and more time with their family is not a difficult one and does not add to the distress felt. Ethnicity however is a stressor in every sphere of life and is often linked to lower educations, lower wage, and discrimination. It is possible that non-white single mothers are not distressed about their ethnicity, but about the situations their ethnicity forces them into with regard to the ability to provide for their family. Reducing stressors, and therefore depressive symptom risks, is important to curb the anxiety disorders and depression among employed single mothers. Non-traditional sex-role attitudes, more time at work, higher income, low work-family strain, and high self-esteem are associated with lower levels of depression among single mothers (Keith Schafer, 1982). All of these situations allow for greater opportunities for a woman to provide for her family, thus creating a less stressful lifestyle. However, managing stress and depressive symptoms is also an area to be involved in. Single mothers are more likely to use mental health care services than their married counterparts (Wang, 2004).Whether this is because they have a less stable social support network, or married women feel ashamed for needing these services is unclear. However these statistics are only significant before the age of 50 (Wang, 2004). This is possibly linked to the aging of the children and the support the single mother r eceived from her adult children she no longer must support. Married Women and Depression For married women and mothers, stressors and triggers of depression focus less on providing for their family and more on their interactions and self-sacrifices for that family. Married women spend approximately 40 hours a week doing household chores (to a mans 17), that is a 70/30% split (News for Healthy Living, 1999). These statistics hold true for both employed women and housewives. The increase stresses of having to be both a financial and domestic provider is a key reason married women develop depressive symptoms. Married women cite losing the opportunity to pursue higher education or dream careers due to expectations of maintaining a household and family as one of their major causes of depression (St. John Montgomery, 2009). Even when a woman does hold a job, she feels that her income is less important than her husbands (which is usually higher). In these situations, she is often more distressed by her husbands performance than by her own (Keith Schafer, 1982). Often, increas ed involvement in leisure activities appear to be negatively associated with well-being, suggesting that further structured time commitments beyond those to her family may be more stressful than helpful for a married mother (Janke, Nimrod, Kleiber, 2008). Positive work orientation, high self-esteem, less time spent at work and higher satisfaction with both domestic tasks and their partner and relationship were linked with lower depression rates among married mothers (Keith Schafer, 1982). Partner satisfaction is an important reducer to the stresses, and ultimately depressive symptoms, in a married mothers life. There is significantly less martial adjustment and cooperation in marriages with at least one depressed partner (Heene, Buysse, Van Oost, 2007). Whether this is the cause or the result of the depression however is unclear. Drinking is a common form of stress control among married women; however this often leads to more stressful situations. Reductions in excessive drinking behaviors led to a modest improval in martial satisfaction rates and decreased depression (Kelly, Halford, Young, 2000). One of the highest causes of stress in married mothers lives is their over commitment to their surrounding friends and family. It has b een shown that decreasing the number of unsatisfying social connections, such as clubs and other leisure activities, may increase a married womens mental health (Janke, Nimrod, Kleiber, 2008). Widowed and Divorced Women and Depression While single (never-married) and currently married mothers have similar prevalence rates of mental health disorders, widowed and divorced women have a much greater occurrence (Afifi, Cox, Enns, 2006). Separated and divorced mothers have higher instances of diagnosable anxious-misery disorders including depression, dysthymia, general anxiety disorder (GAD), post-traumatic stress disorder (PTSD), and antisocial personality disorder, while widowed mothers have much higher instances of PTSD and major depressive disorder (Afifi, Cox, Enns, 2006). For widowed women the personal bereavement period and the psychological stresses of losing a spouse are often detrimental enough to trigger depressive symptoms or a depressive episode, especially in older women. Divorced women however are triggered not by losing their spouse, but by the process of divorce itself. A more hostile divorce will lead to greater instances of anxiety disorders as more negative interactions with a spouse is associated with depression (Afifi, Cox, Enns, 2006). Social support after being widowed or divorced is often lacking and needs to be cultivated to provide widows and divorcees with the means to combat their depression. Rates of adult engagement in pleasant activities have been link with subsequent decreases in levels of depressive symptoms (Janke, Nimrod, Kleiber, 2008). Isolation is prevalent after a spouse has died or left a woman, especially if she has children. She must now learn to provide for her family without her partner, and often times, without her main support system. More social contact, especially in the form of leisure activities with women their own age is recommended for widows or divorcees with depressive symptoms or on the edge of developing symptoms of an anxiety disorder (Janke, Nimrod, Kleiber, 2008). Depression Interventions Single, married and widowed or divorced mothers all have different stressors and triggers of depressive symptoms in their everyday lives. Each woman should ideally have an intervention created specifically to her socioeconomic status, relationship level and needs, child situation and other stress-inducing lifestyle characteristics. However, there are a few general guidelines about depression interventions in women which may apply to all categories. Distress, especially in relationships, is common in women with alcohol problems. These women report low confidence about resolving disagreements with their children, bosses, and/or partners (Kelly, Halford, Young, 2000). Alcohol use and abuse is also co-related to high rates of spousal aggressive and instances of excessive drinking in response to conflicts. While alcohol interventions alone improve relationships within the first 12 months of the decrease in drinking behavior, relapse often occurs if the original cause of the depression is not addressed and more viable coping mechanisms are not introduced (Kelly, Halford, Young, 2000). Women need to focus more on themselves, their inner growth, family and friends with whom they have close connections before over extending themselves; this could mean either eliminating unnecessary social connections or creating them depending on ones situation (Janke, Nimrod, Kleiber, 2008). Communication is the largest mechanism for combating stress and depressive disorder is women of all relationships levels. Women are more likely to express demands in relationships, whereas men withdraw themselves, and failure to have these expressed demands met often lead to feelings of hopelessness and depression (Heene, Buysse, Van Oost, 2007). These lower levels of communication, which could include avoidance or varying demand/withdrawal relationships, lead to little conflict resolution, less constructive communication and problem solving skills, more avoidant or ambivalent relationships in couples and often fosters depression or other anxiety disorders (Heene, Buysse, Van Oost, 2007). A common place for miscommunication is relationships, especially marriages, is the performance of household chores. Keith and Schafer found a significant link between satisfaction over housework and the mental health of married women suggesting that homemaking may have a greater important when both spouses were equally present (1982). The traditional sex-roles which often survive in marriages lead to greater depressive symptoms and depression in married women, whereas non-traditional sex-role attitudes have been shown to decrease depression in single women (Keith Schafer, 1982). It is not keeping the home which leads to the depressive symptoms, but the division of the work. The bigger the womans share of home responsibilities when compared to her partner the more likely she is to feel distressed and depressed (News for Healthy Living, 1999). Conclusions Single, employed mothers most often experience distress and depression relating to their financial situations and their ability to care for their children. Married women usually experience this distress relating to their relationship with their partner and the things they were forced to give up for their marriage. Widowed and divorced womens distress is generally focused around changing familial roles and the loss of familiar social support systems. Depression is more prevalent in widows and divorcees and least prevalent in married women, though this many have to do with the stress inducers of each group and the economic depression of the time period (St. John Montgomery, 2009). While the stressors of these women are all different, some common interventions are useful. Self-esteem is a large factor is all depressive symptoms and in the development of depression. Interventions aimed at increasing a womans self-esteem will be useful for all relationship levels (Keith Schafer, 1982). Depressed women have higher levels of attachment insecurity and therefore decreased conflict resolution skills, it is not clear however if the depression causes the decrease in relationship effectiveness, or the dysfunctional relationship is the cause of the depression (Heene, Buysse, Van Oost, 2007). Carefully selecting relationships to cultivate is important, whether growing new social support networks or strengthening existing ones, over or under stimulation socially is a large cause of depressive symptoms in women and mothers. A large conflict between work and home roles is a significant predictor of depression in women, so dividing the housework evenly among partners will si gnificantly reduce the occurrences of depression (News for Health Living, 1999; Wang, 2004). While depression will always occur in relationships, due to work and home stresses, from the burden of caring for children, and as a result of changes in a persons life; knowing the proper way to combat those stressors will significantly reduce a womens likelihood of developing depressive symptoms or anxiety disorders and allow them to pursue healthy and fulfilling relationships.
Thursday, September 19, 2019
IndyCar Racing - We Need Speed :: Argumentative Persuasive Topics
Every year on Memorial Day auto racing fans around the world wake up in anticipation to see the most famous race in the world. The Indianapolis 500 is an annual IndyCar race that has been run since 1916 at the Indianapolis Motor Speedway. It is a race of great tradition that is supposed to represent the fastest racers in the sport at the fastest raceway in the sport. However, Tony George, President of the Indianapolis Motor Speedway and the IRL, is changing everything about the race and the sport. This year at Indy, Tony George and his Indy Car Racing League (IRL)) broke a long standing tradition at Indy and forced another race to occur on the same day. In Michigan the US 500 was raced on the same day by members of CART (Championship Auto Racing Teams) in protest to the IRL. It was the first time another race was held opposite of the Indy 500. There were a record 17 rookies starting at Indy because many of the more experienced drivers were racing at Michigan. There was only one driver in the race who had won at Indy before. The IRL had dramatically changed the Indy 500. The IRL and CART are two racing leagues with opposing views on where the sport of auto racing is going. CART is supporting the way the sport has been progressing in recent years. That includes trying to increase the speed of the cars at whatever means possible. The IRL was formed a few years ago under the direction of Tony George. He is trying to make the sport less expensive and safer by using different motors /chassis and slowing down speeds. Racing has always been about going faster than the next driver. It was about trying to beat course records and lap speeds. But if Tony George has his way, all course speeds will be reduced due to switching from turbo Indy V6 engines to normally aspirated V8's. The result is less horsepower, thus slower speeds. Records would never be broken, and the sport would lose some of its appeal. Racing has always been a strive to go faster; there is no real reason to change it now. One of Tony George's justification is that the sport would become safer. That is not true. The difference would not be much . The fatality rate for a 230 mph crash, and a 210 mph crash, is not that much different.
Wednesday, September 18, 2019
Essay --
There are many different programs, which offer scholarships for studying in different parts of the world. In order to pick the right one for you, one needs to clearly understand what he/she expects from the program. I find UGRAD to be one of most promising programs for studying in the US for me, because it offers everything Iââ¬â¢m looking for. Studying in the US has many great advantages like having an opportunity to get higher quality education, learning about the American people, exploring their lifestyle, culture and holidays, improving your English as well as becoming more responsible and mature person than you are currently. Armenian education system is descendent of the former Soviet Union one, so as a consequence it is more concentrating on theory rather than on the practical usage of the information. The problem is that without knowing how to apply the knowledge, one won't be able to become a good specialist. It is like having a tool but not knowing how to use it. Imagine having the latest, most powerful computer without having a power supply. You canââ¬â¢t make any use of it. This is the situation I found myself in - universities here give profound knowledge however, they are far from providing you with skills of using it. Whereas American education system pays more attention to practical skills, which include ability of doing research, actively interacting with problems of real life as well as developing critical thinking skills. Not to mention that due to having much more progressive equipment and better facilities studying is an easier, more attractive and more joyful process for students. Studying in the US is a perfect solution, as I will get best from both of the worlds. Besides academic challenges, ther... ... As soon as we get to know it better, we find it interesting and even like it. This is the kind of experience Iââ¬â¢m looking for. Speaking of motivation I must admit that it came from my English teacher, who kindly showed me the right path to a better future. Thanks to her I had a chance to meet teachers from the US, communicate with them, ask many questions. That was the moment when I realized what I was missing. And the reason beyond my desire to get the best possible education is actually the fact I want to make my country a better place to live in. Armenian economic system is having a hard time nowadays, and the reason is the lack of proper specialist, who would lead the country to the right direction. I hope all the skills and knowledge Iââ¬â¢ll bring with me from the US in case of being chosen will help me to become one of the leaders my country needs so much.
rave culture Essay -- essays research papers
Rave Culture What is a rave? Raving is a highly subjective experience. One person's best rave is another person's worst. Any attempt to analyze rave culture must recognize the highly personal factor of the experience. Author Daniel Martin defines a rave as ââ¬Å"a long period of constant energetic and stylistic dancing exhibited by a large group of people in a hot, crowded facility providing continuous loud House music and an accompanying strobe lit psychedelic light showâ⬠. Since the beginning of this culture there has been much controversy on the legality of what goes on in the scene. Through the history, music, people, spirituality we are introduced to one of the newest things affecting pop culture today. Rave culture can be traced back to Native American religious ceremonies. It can be traced back to anarchist revolutions in Italy and France. It pulls energy from many different directions. It had its origins in Chicago and Detroit disco clubs and gay dance clubs. England and America traded musical influences back and forth during the late seventies-early eighties until techno finally started to be formed. The actual rave movement, however, combining this new music with dancing, occurred in England. At almost the exact same time, raves started popping up in Manchester and Ibiza, a noted English vacation spot, in late 1987 and early 1988. At this same time, the rave phenomenon was taking hold in Germany, most notably in Berlin. The popularity of raves grew in both countries, and soon the intimate all-night dance parties were drawing thousands of kids. The first U.S. raves were held in San Francisco, long noted for its liberal and psychedelic culture. From here, they moved to Los Angele s and the rave scene was born in California. The rave scene that was born in America was one of complete illegality. It began when Frankie Bones, a New York native and one of the U.S. DJââ¬â¢s that was spinning in England, saw that the scene was moving into America, and wanted to bring it to his hometown of Brooklyn. He started a series of parties called Stormrave in early 1992. The parties started out small, 50-100 kids, and Frankie resorted to projecting videos of the massive raves in England to show kids what it was all about. It was during this period of Stormraves that many DJââ¬â¢s made their debuts. The music at a rave is techno, primarily electronically created music that gener... ...rable and strangers become people to be loved. It was a perfect fit with the happy family that the rave scene was trying to create. There is a tangible energy that goes along with dancing to extremely loud beats with hundreds of other people. Raves are a shared experience. A sense of unity often develops among ravers, in which, personal creeds, race, gender, age, sexual preference and everything else that our society places so much emphasis on simply fades into the background. At a rave when everyone is dancing you experience a feeling of collective organism and I think people that have had this experience view the world differently afterwards. Another phrase commonly thrown around in circles of ravers is that of PLUR, which stands for Peace, Love, Unity and Respect. In many senses, PLUR is the dogma that ravers believe in. References: Jordan, Joel. Searching for the Perfect Beat. New York: Watson-Giptil Publications, 2000. Martin, Daniel. ââ¬Å"Power Play and Party Politics: The Significance of Raving.â⬠Journal of Pesch, Martin. ââ¬Å"Techno Style.â⬠Zurich: Edition Olms, 1998. Redhead, Steve, ed. Rave Off: Politics and Deviance in Contemporary Youth Culture. Aldershot: Avebury, 1993.
Tuesday, September 17, 2019
Evaluate the View That the Separation of Ownership
Evaluate the view that the separation of ownership from control in large firms inevitably leads to diseconomies of scale. The separation of ownership from control can be defined as the situation in which the shareholders of a firm do not manage or control it. The shareholders of large publicly owned have no controlling interest and hence the managers and directors run the organisation. Diseconomies of scale can be described as the increase in the long term average cost of production as the scale of operation increases.It can be argued that the separation of ownership from control can lead to diseconomies of scale due to the lack of communication between managers and shareholders, hence inefficiency and averages costs increase. But it could also be argued that large firms can also benefit from economies of scale whilst being operated through the separation of ownership from control the diseconomies of scale are not always ââ¬Ëinevitableââ¬â¢ as described above. Firstly, the sepa ration of ownership from control can lead to managerial diseconomies of scale.The power the shareholders have over the disciplining and monitoring of its executive management is reduced and as a result of this, managers may cause inefficiency by pursuing certain objectives for their own self-interest and at the expense of the shareholders. If the managers of the firm are measured and rewarded on achievement of growth targets rather than profit and return to shareholders then they may lose focus on cost control e. g. supplier costs and as a result this could drive up the average costs of production.This would have a bigger impact on large firms due to the scale of production. The costs will be felt on a much larger scale, particularly if this culture affects the way the whole of the business operates not just one business area. The extent on the managerial diseconomies of scale will depend on the objectives of the managers. If their personal targets are to ensure high business perfor mance, then this increase in average cost may not be felt as they may aim to increase productive efficiency to maximise profit and dividends to shareholders.Conversely, although diseconomies of scale may persist in a large firm, the separation of ownership of control may not necessarily be the cause of it. There are other factors that may have contributed to the firm experiencing diseconomies of scale. The rapid growth of a firm may cause the employees to feel alienated if they feel that they arenââ¬â¢t valued as an individual. As a result of this, the productivity of demotivated employees may fall and the roductive efficiency of the firm will decrease, therefore increasing the average cost for each unit of output. The diseconomies of scale may also be caused by the inability for a firm to monitor the productivity of every one of its employees. The lack of supervision resulting from the size of the company and scale of production may mean that employees are not working to their o ptimum level of output or utilizing resources efficiently and this could result in wasted resources e. . From employee errors. Therefore the average cost of producing one unit of output increases. Although, there is not really an easy way to determine the exact cause of the diseconomies of scale. In the short term, it may cost more for the business to alter the way it operates to reduce the average costs. The rate of growth and output may mean that the business is not prepared to change its operations whilst it is generating such a large amount of revenue.In conclusion, I donââ¬â¢t think that separation of ownership from control will inevitably lead to diseconomies of scale for a large firm. Rapid growth is more likely to cause a business to experience them rather than the lack of control for shareholders of the firm. The most costly resources for a firm are employees and premises. The diseconomies of scale that a firm may experience may be due to the increase of overheads from t he rapid expansion before the increased volume profit and volume can be realised in the long term.Although the lack of control for shareholders may initially contribute to a rise in average costs as a firm expands (assuming that the managers want to operate the firm in a way that will meet their personal targets increase their salaries rather than maximise the return for the firm), the increase in average costs should be a short term phenomenon due to rapid increases in volume it should be outweighed by economies of scale generated from buying in large quantities.
Monday, September 16, 2019
Etiology and Pathogenesis of Alzheimerââ¬â¢s disease
Alzheimerââ¬â¢s disease is a degenerative brain disorder and is the main cause of dementia. The major clinical manifestations of Alzheimerââ¬â¢s disease include gradual loss of memory and language. Other major symptoms and signs of this disease are psychiatric and behavioral abnormalities and disabilities in the routine or daily living activities.The etiology and Pathogenesis of Alzheimerââ¬â¢s disease include various factors. Biological Factors Even though the etiology and pathogenesis of Alzheimerââ¬â¢s disease is still not known fully, it is discovered to involve a complex mix of genetic as well as environmental factors.Among genetic and environmental factors, genetic factor is proved to be playing a major role in the etiology and pathogenesis of Alzheimerââ¬â¢s disease. The most important cause of Alzheimerââ¬â¢s disease is found to be the mutations in chromosomes 21, 14 and 1 which are spread or moved in a typical autosomal dominant mode. These mutations make p rotein overproduction in neuritic plaques, B amyloid. Even though the beginning of the familial form is often early, the nature and route of the disorder is found to be influenced by few environmental factors.But it is found out that familial form is responsible for only a negligible proportion of cases of Alzheimerââ¬â¢s disease (even less than five percent) (Cummings et al. , 1998b). Nearly fifty percent of the people who are having ancestors with Alzheimerââ¬â¢s disease are found to be getting this disorder once they enter their 80s and 90s (Mohs et al. , 1987). Few genotypes (the model of genetic inheritance in a personââ¬â¢s body) are found to give risk for the late-onset Alzheimerââ¬â¢s disease (which is very common).Taking an example, the ApoE-e4 allele on chromosome 19, that encourages the deposition of B amyloid, is proved to increase the risk for developing Alzheimerââ¬â¢s disease (Corder et al. , 1993). All other genes that are doubted to be responsible for the development of Alzheimerââ¬â¢s disorder are being studied (Kang et al. , 1997). Apart from this particular reason, there are various other biological risk factors that contribute to the development of Alzheimerââ¬â¢s disorder Cummings et al. , 1998b).Cognitive capabilities and aging are among the biological factors. The manner in which these traits contribute to the increased risk is not still proved, however, it is proved in the medical field that the numerous neurobiologic changes that are associated with the normal aging of the brain of a person also contribute to the major risk factors of Alzheimerââ¬â¢s disorder. As people get into the later part of their life, this age related neurobiologic changes make then more liable for Alzheimerââ¬â¢s disorder.These neurobiologic changes include neuron and synaptic loss, lessened dendritic span, reduced size and density of neurons present in the nucleus basalis of Meynert, and poor cortical acetylcholine levels (Cummings et al. , 1998b). Based on these factors and the frequency and occurrence curve of this disorder, medical researchers have come to the conclusion that people are very much liable to Alzheimerââ¬â¢s disorder if their life span is extended (beyond the normal age) beyond eighties and nineties (up to 100 and 150). People above 90 years are highly susceptible to Alzheimerââ¬â¢s disorder.Among this, those who have Alzheimerââ¬â¢s history in their family are 90 % prone to this disorder. Protective Factors Apart from the biological factors there are various other factors that influence the onset of Alzheimerââ¬â¢s disease. Various protective factors that are powerful enough to delay the commencement of Alzheimerââ¬â¢s disorder have been discovered. For example, Genetic endowment with the ApoE-e2 allele is capable of reducing the risk of Alzheimerââ¬â¢s disorder (Duara et al. , 1996). The exact role and the original mechanism of action of ApoE-e2 allele, however, are not com pletely understood.Deep thinking, higher educational level and wisdom are also proved to be associated with the delay in the commencement of Alzheimerââ¬â¢s disease (Stern et al. , 1994; Callahan et al. , 1996a). Few medication and drugs are also found to be good for delaying the onset of Alzheimerââ¬â¢s disorder. For example, medications, like nonsteroidal anti-inflammatory drugs (Andersen et al. , 1995; McGeer et al. , 1996) and estrogen replacement therapy (Paganini-Hill & Henderson, 1994), are found to be effectively delaying the commencement of Alzheimerââ¬â¢s disease.Apart from this, Vitamin E and the drug selegiline (otherwise known as deprenyl) are also proved to holdup the crucial stages of the course of Alzheimerââ¬â¢s disorder, for example the nursing home placement, serious functional impairments or disorders as the disease progresses and lead to death (Sano et al. , 1997). According to Behl et al. , 1995, the course of action of the protective agents in a pe rson is not completely known; however, these agents are proved to check the toxic action of oxidative stress (through antioxidants like vitamin E or estrogen).These agents also counter the work of inflammatory mediators related to plaque formation (through anti-inflammatories) (Mark et al. , 1995). Histopathology The pathophysiology of Alzheimerââ¬â¢s disorder is also proved to be associated with the histopathologic variations in Alzheimerââ¬â¢s disease. These histopathologic changes include neuritic plaques, synaptic loss, neurofibrillary tangles, hippocampal granulovacuolar degeneration, and B amyloid angiopathy (Cummings et al. , 1998b).Majority of the genetic and epigenetic risk factors are some or the other way linked with B amyloid. This has helped the medical researchers to conclude that the formation of B amyloid peptide is the most crucial pathological event or step in the course of spread of Alzheimerââ¬â¢s disorder in a person (Cummings et al. , 1998b; Hardy & Hi ggins, 1992). A successful intervention in the course of Alzheimerââ¬â¢s disease spreading may include get in the way of any of the numerous steps included in the slow progress of Alzheimerââ¬â¢s disease pathogenetic cascade.Few of the intervention modes include intervening to reduce B amyloid generation from the amyloid precursor protein, intervening to decrease the B amyloid aggregation as well as the generation of beta-pleated sheets, and intervening in the amyloid-related neurotoxicity process. Successful interference in these steps may help interrupt Alzheimerââ¬â¢s spread. Apart from this, few therapies can successfully block the neuronal cell death and can slow down the inflammatory response occurring in neurotic plaques.Therapies are also proved to inhibit the work of certain growth factors and hormones and also delay the replenishment of deficient neurotransmitters. As the complete obstruction of the processes within the B amyloid cascade may affect the usual cereb ral metabolic processes, successful interruptions may bring about partial interruptions (Cummings & Jeste, 1999). Studies about the molecular neuroscience of Alzheimerââ¬â¢s disease have researched several crucial aspects of pathophysiology and etiology.Researchers are working to thoroughly understand the entire processes and reasons behind cell death, neuronal degeneration and subsequent memory degradation. Medical world is expecting new revelations from these studies and are on the way to lay a new therapeutic path for eliminating Alzheimerââ¬â¢s disease from the world (National Institute on Aging, 1996). Medical world is expecting researchers to come out with the real physiological factor that makes a human body prone to Alzheimerââ¬â¢s syndrome. Role of AcetylcholineAcetylcholine is also suspected to play a part in encouraging Alzheimerââ¬â¢s disorder in a person. Loss or decrease of the neurotransmitter acetylcholine also is proved to be responsible for the pathogen esis of Alzheimerââ¬â¢s disease. Postmortem researches in Alzheimerââ¬â¢s disease infected people have explained the loss or reduction of basal forebrain and cortical cholinergic neurons and the exhaustion of choline acetyltransferase, which is the enzyme that carry out acetylcholine synthesis (Mesulam, 1996). Several post mortem reports have come out with the same reason.The scale of this central cholinergic deficit is associated with the severity of dementia that results in the ââ¬Ëcholinergicââ¬â¢ hypotheses of cognitive deficits in Alzheimerââ¬â¢s disorder (Mesulam, 1996). This hypothesis and the clinical researches have proved that Acetylcholine play a major role in Alzheimerââ¬â¢s disease. However, acetylcholine is not the only neurotransmitter that encourages the growth of Alzheimerââ¬â¢s disorder in a patient. Researchers are still working to find out the role of other substances in the pathogenesis of the Alzheimerââ¬â¢s disorder.The researches relat ed to the pharmacological treatment of this syndrome are coming out with new results. It has been proved that a delay or break in the spread of Alzheimerââ¬â¢s disease is proved to reduce its prevalence in the body of a patient even by half (Breitner, 1991). In order to inhibit the spread of this syndrome in a person it is necessary to delay the onset of the disease to such an extent where mortality from other resources surpasses the frequency of the steps of the disease.So the most crucial step in inhibiting Alzheimerââ¬â¢s disease is the identification of the factors that stop the onset or slow down the progress of the disease in the patient. Working on these agents would help reduce the spread of the disease. References Aarts, P. , & Op den Velde W. (1996). Prior traumatization and the process of aging. In B. A. van der Kolk, A. C. McFarlane, & L. Weisath (Eds. ), Traumatic stress: The effects of overwhelming experience on mind, body and society (pp. 359ââ¬â377). New Yo rk: Guilford Press. Abrams, R. C. , Rosendahl, E. , Card, C. , & Alexopoulos, G. S. (1994).Personality disorder correlates of late and early onset depression. Journal of the American Geriatrics Society, 42, 727ââ¬â731. Adams, W. L. , Garry, P. J. , Rhyne, R. , Hunt, W. C. , & Goodwin, J. S. (1990). Alcohol intake in the healthy elderly. Changes with age in a cross-sectional and longitudinal study. Journal of the American Geriatrics Society, 38, 211ââ¬â216. Aevarsson, O. , & Skoog, I. (1996). A population-based study on the incidence of dementia disorders between 85 and 88 years of age. Journal of the American Geriatrics Society, 44, 1455ââ¬â1460. Aiken, L. (1990). Chronic mental illness. In B. S. Fogel, A. Furino, & G.Gottlieb (Eds. ), Mental health policy for older Americans: Protecting minds at risk. Washington, DC: American Psychiatric Press. Albert, M. S. , Jones, K. , Savage, C. R. , Berkman, L. , Seeman, T. , Blazer, D. , & Rowe, J. W. (1995). Predictors of cogniti ve change in older persons: MacArthur studies of successful aging. Psychology and Aging, 10, 578ââ¬â589. Alexopoulos, G. S. (1997, November 6). Epidemiology, nosology and treatment of geriatric depression. Paper presented at Exploring Opportunities to Advance Mental Health Care for an Aging Population, meeting sponsored by the John A. Hartford Foundation, Rockville, MD.
Sunday, September 15, 2019
Critical State Soil Mechanics
The preparation of the Cam Clay theoretical account in 1958 is possibly the most of import development in modern dirt mechanics. Mechanical belongingss of dirt have been unified elegantly and systematically into the theoretical model of the theoretical account: the critical province dirt mechanics. Since so, many theoretical accounts were developed within the theoretical model of Cam Clay theoretical account and they form theoretical accounts of the Cam Clay household. Two most distinguished characteristics of theoretical accounts of the Cam Clay household are: ( 1 ) the hardening of dirts based on plastic volumetric distortion, and ( 2 ) the being of a critical province of distortion as the concluding failure province. A brief debut of the two characteristics is given in this session, and descriptions of the strengths of dirts based on critical province dirt mechanics is given in the undermentioned subdivision.7.1.1: Hardening of dirt based on plastic volumetric distortionAs seen in the compaction theoretical account illustrated in Fig. 10, whenever the current emphasis goes beyond the historical upper limit emphasis, plastic volumetric distortion occurs and the elastic zone enlarges. The expansion of the elastic zone is seen as the hardening of dirt and is straight linked to the plastic volumetric distortion of the dirt. Consequently, the undermentioned decisions are drawn from indurating mechanism of dirt. The magnitude of plastic volumetric distortion is dependent on the alteration in size of the output surface, but independent of the stress way. All emphasis provinces which have the same accretion of plastic volumetric strain constitute a individual output surface.7.1.2: Prediction of the being of a critical province of distortionSoil is a frictional stuff. When the emphasis ratio applied on a dirt component additions, dirt will finally make a point, where it has no opposition to further shear distortion. The dirt fails. This is a critical province of distortion. A Critical State of distortion is defined as At a Critical State of distortion, a dirt has no opposition to shear distortion and the dirt can be distorted continuously with its emphasis province and nothingnesss ratio remain unchanged. A critical province of distortion is a concluding failure province. The theoretical model, uniting systematically the mechanical belongingss of dirt into one simple and elegant system under the Cam Clay theoretical account, is referred to as the Critical State Soil Mechanics ( CSSM ) .7.2: Strength of dirt described in the critical province dirt mechanicsThe behavior of Fuji sand in triaxial trials is shown in Fig. 12 ( Tatsuoka, 1972 ) . The trials are drained trials. The axial emphasis additions with the restricting emphasis kept changeless. The denseness of the dirt for the three trials varies from really loose to really dense. It is seen that Fuji sand in a really heavy Fuji province has two strengths: a peak strength and a strength as really big shear strain. For the loose sand, the dirt has merely one strength, besides at really big shear strain. It besides appears that the strength as really big shear 0 5 10 15 20 25 Distortional strain ad ( % ) Volumetric strain Cv ( % ) -12 4 0 5 10 15 20 25 Dense =0.52 Loose eaÃâ z =0.78 Very loose =0.85 Distortional strain ad ( % ) Fig. 12 The shearing behavior of Fuji sand under triaxial compaction trials ( Test informations after Tatsuoka, 1972 ) Shear emphasis ratio two 3.2 2.4 0.8 1.6 0 Dense =0.52 Loose eaÃâ z =0.78 Very loose =0.85 -4 -8 strain for the three samples are really near and appears to near a alone value as the distortional strain additions. The peak strength and the critical province strength of dirt interpreted by the critical province dirt mechanics are introduced in the followers.7.2.1 Critical province strengthUnder shearing ( increasing distortional strain ) , dirt reaches a concluding failure province, the critical province of distortion. At a critical province of distortion: Therefore, a dirt can be distorted with no alteration in its emphasis, and no volumetric plastic distortion. At critical provinces of distortion, dirt has the undermentioned characteristics ( Fig. 13 ) . The shear emphasis ratio c is changeless, denoted by I . There is a alone relationship between the average effectual emphasis paÃâ ? and nothingnesss ratio vitamin E, irrespective of the initial state of affairs of the dirt or the stress way of the trial. 27 This relationship is additive in the vitamin E ââ¬â lnpaÃâ ? infinite, and its gradient is the same as that of ICL in the compaction theoretical account, being e . The features of critical provinces can be represented by the critical province line ( CSL ) in the paÃâ ? ââ¬â q infinite and the vitamin E ââ¬â lnpaÃâ ? infinite. They are described mathematically as. Ià · Q = I? ( 46 ) PaÃâ ?e=eCS a?ââ¬â¢Ià »lnpaÃâ ? ( 47 ) Critical province shear emphasis ratio M Shear emphasis Q I? CSL Mean effectual emphasis P ââ¬Ë ( kPa ) ( a ) CSL in the p'-q infinite The critical province shear emphasis ratio is linked to the concluding failure clash angle ocs of dirt measured from conventional triaxial compress trial by the undermentioned equation I? = 6 wickedness Iâ⬠cs ( 48 ) 3 a?ââ¬â¢sin Iâ⬠cs The critical province clash angle for most san vitamin D is 32Aà ° Aà ± 1Aà ° , which gives about M = 1.28. Determination of the concluding failure strength of dirts Nothingnesss ratio vitamin E vitamin E CS eIC ( 1 ) Undrained concluding strength of dirt ICL Ià » CSL Ià » p'=1 kPa Mean effectual emphasis P ââ¬Ë ( kPa ) ( B ) CSL in the e-lnp ââ¬Ë infinite Fig. 13 Characteristics of critical province of distortion P aÃâ ? = exp aZ? aZ? aZY Cesium I a?ââ¬â¢ Cs aZ? Ià » aZ Three parametric quantities define a dirt province. They are the emphasis province on the dirt and its nothingnesss ratio, i.e. , ( paÃâ ? , Q, vitamin E ) . Because any dirt province at a critical province of distortion must fulfill conditions expressed by equation ( 46 ) and ( 47 ) , the concluding failure province ofa dirt, the critical province of distortion, can be determined if there is one more extra status. Some of common instances are discussed here. During an undrained trial, volumetric distortion is non allowed. Therefore, the nothingnesss ratio ofthe dirt is kept the same and is equal to its initial value, ei. Based on equations ( 46 ) and ( 47 ) , the undrained concluding shear strength qcs, the mean effectual emphasis paÃâ ?cs, an d the nothingnesss ratio European Union are given by ( 49 ) 28 aZà § aZâ⬠ºe vitamin E aZz Cesium I aZâ⬠º a?ââ¬â¢ aZz aZ? aZY aZ? Ià » aZ aZ?aZ? vitamin E vitamin E Cs aZ? Q = I? exp vitamin E vitamin E Cs I=aZà © aZ? aZ? aZ? ( 2 ) Drained concluding strength for changeless paÃâ ? trials The average effectual emphasis at the concluding critical failure province is known, paÃâ ?i, so aZà § aZ?aZ? aZ?aZà © personal computers = pi qcs IpaÃâ ?i ( 50 ) ei = eCS a?ââ¬â¢ Ià » ln pi The stress way for this type of trials is a perpendicular line in the paÃâ ? ââ¬â Q infinite, as shown in Fig. 4. ( 3 ) Drained concluding strength for changeless Q trials The shear strength at the concluding failure province is known, chi, soIà » ln chi aÃâ ? = Cs P I? qcs = chi=ei European Union a?ââ¬â¢ aZâ⬠º Q aZz ( 51 ) I aZ?aZ? I? aZ aZY The stress way for this type of trials is a horizontal line in the paÃâ ? ââ¬â Q infinite, as shown in Fig. 4. ( 4 ) Drained concluding strength for trials with additive emphasis waies Suppose the gradient for the additive emphasis way is k, and the initial emphasis province of the dirt is ( paÃâ ?i, chi ) . Then the dirt province at the concluding failure province can be obtained from work outing the undermentioned equations qcs a?ââ¬â¢ chi = k personal computers a?ââ¬â¢ pi I?aÃâ ? P Cs =eCSa?ââ¬â¢Ià »lnp qcs European Union ( 52 ) aZà § aZ? aZ? aZà © aÃâ ? Cs 29 Two common additive emphasis waies, discussed in subdivision 3.3, are ( 1 ) conventional triaxial compaction trials with the restricting emphasis kept changeless and in this instance k = 3, and ( 2 ) conventional triaxial extension trials with the axial emphasis kept changeless and in this instance k = ââ¬â 1.5.Example 5The critical province clash angle for a sand is 32Aà ° . For its CSL in the vitamin E ââ¬â lnpaÃâ ? infinite, the gradient is 0.12 and European Union is 1.42. ( 1 ) Determine the values of M ; ( 2 ) Pull a study of the CSL in the paÃâ ? ââ¬â q infinite and the vitamin E ââ¬â lnpaÃâ ? infinite ; ( 3 ) Determine the concluding failure strength of a specimen of the sand with initial province as ( paÃâ ? = 75 kPa, q = 0, vitamin E = 0.85 ) . ( a ) under undrained state of affairs ; ( B ) under a changeless mean effectual emphasis trial ; and ( degree Celsius ) following a stress way with = 2.dq dpaÃâ ? A: Determine the values of M 400 800 600 200 0 CSL q=1.29p ââ¬Ë Shear emphasis Q kPa 30 100 200 300 400 500 600 Mean effectual emphasis P ââ¬Ë kPa Nothingnesss ratioe 0.9 0.7 0.5 1.5 1.3 1.1 CSL e=1.42-0.12lnp ââ¬Ë 1 10 100 1000 Mean effectual emphasis P ââ¬Ë kPa Oxygen Nothingnesss ratio e n Shear emphasis Q CSL C I? Bacillus A P ââ¬Ë ( kPa ) CSL e=eCS -elnpaÃâ ? Bacillus C Mean effectual emphasis P ââ¬Ë ( kPa ) Fig. 14 Variation of dirt strength ( 53 ) 7.2.2 Peak strength As seen in Fig. 12, under shearing dirt at heavy province may make a peak strength ( higher than the critical province strength ) . However, this strength of dirt lessenings with the addition of distortional strain, and becomes indistinguishable to the critical province strength finally. Two characteristics of the peak strength should be noticed. The happening of a strength for dirt greater than the concluding critical province strength ( the extremum strength ) is possible merely if the dirt is under the CSL in the vitamin E ââ¬â lnpaÃâ ? infinite ( Fig 14 ) . This is in the ââ¬Å" Dry â⬠side. As named by Schofield and Wroth ( 1968 ) , soil behavior with both peak and critical province strength is ââ¬Å" Dry â⬠behavior. The peak strength is non stable. The minute a peak strength is reached, the strength of dirt will diminish with the farther distortional distortion. An empirical equation proposed by Liu and Carter ( 2002 ) may be used to gauge the peak strength ratio cp of dirt based on its place in the vitamin E ââ¬â lnpaÃâ ? infinite=Q P = aÃâ ? Ià · P P P 31 ( 1 a?ââ¬â¢ Ià ¦ ) I? for A- & lt ; 0 Ià ¦ , the province parametric quantity, defined by Been and Jefferies ( 1985 ) as Ià ¦ = vitamin E a?ââ¬â¢ vitamin E CS + Ià » ln p aÃâ ? ( 54 ) Uniting the above two equations, we obtain q P Ià · = = + a?ââ¬â¢ a?ââ¬â¢ aÃâ ? I? & lt ; a?ââ¬â¢ Ià » aÃâ ? ( vitamin E e P ) vitamin E vitamin E P 1 ln for ln P CS CS ( 55 ) P P aÃâ ? For A- & gt ; 0, there is merely one strength. The peak strength and the critical province strength may be considered as coincident.7.2.3 Variation of dirt strength in the paÃâ ? ââ¬â Q infiniteMohr-Coulomb ââ¬Ës strength standard, written in the paÃâ ? ââ¬â Q infinite, is given as 32 Q degree Fahrenheit = c + I? MC P aÃâ ? degree Fahrenheit ( 56 ) This standard is possibly the widely used standard to find the strength of dirts in geotechnical technology pattern. However, it is applicable for dirt conditionally. As shown in Fig. 14, Mohr-Coulomb ââ¬Ës strength standard is applicable to dirty in the scope of AB, where the dirt in the ââ¬Å" Dry â⬠side, i.e. , below the CSL. The general strength standard for dirt may be divided into three scopes to analyze. Strength of dirts on the ââ¬Å" Wet â⬠side If a dirt province in the vitamin E ââ¬â lnpaÃâ ? infinite is above the CSL, i.e. , A- & gt ; 0, the dirt is on the ââ¬Å" Wet â⬠side. Dirts on the ââ¬Å" Wet â⬠side have merely one strength, the concluding critical province strength. The critical province strength of dirts is represented by line BC, and their belongingss are introduced in subdivision 7.2.1. No tensile emphasis line Farinaceous stuffs such as littorals or clays in reconstituted provinces have no echt coherence, and can non prolong a tensile emphasis. The boundary oaÃâ ?min & gt ; 0 in the paÃâ ? ââ¬â q infinite is = 3 Q,paÃâ ? represented by line OA. On the left side of line OA, tensile emphasis occurs. Strength of dirts on the ââ¬Å" Dry â⬠side Merely when dirt on the ââ¬Å" Dry â⬠side, the dirt has a coherence c. The strength of the dirt can depict by equation ( 56 ) , the Mohr-Coulomb ââ¬Ës strength standard. Cohesion degree Celsius may be treated as changeless. Clash angle oMC and parametric quantity MMC is related by the undermentioned equation = 6sinoMC ( 57 ) Megahertz I?MC 3 a?ââ¬â¢ sino The whole strength envelope OABC is shown in Fig. 14. Two errors are normally made in using the Mohr-Coulomb ââ¬Ës strength standard for finding the strength of dirts. The extension of the Mohr-Coulomb ââ¬Ës strength standard to the left side of AB and therefore implies dirt has a tensile strength. The extension of the Mohr-Coulomb ââ¬Ës strength standard to the right side of AB ( beyond the critical province strength ) . This implies the ultimate clash angle of dirt will go on lessening after the critical province clash angle unlimited with the average effectual emphasis. Terzaghi, the laminitis of modern dirt mechanics, made both errors in widening the pertinence of Don Taylor ââ¬Ës experimental information. And I hope you will non do the same error in your technology designs or safety cheque. 33Example 6The critical province clash angle for a Leighton Buzzard sand in situ is 31Aà ° measured from conventional triaxial compaction trials. The strength envelope detected for the sand can be described by Mohr-Coulomb ââ¬Ës strength standard with c= 40 kPa and oMC = 23Aà ° . ( 1 ) Determine the values of dirt parametric quantities M for critical province stength and MMC for Mohr-Coulomb ââ¬Ës strength ; ( 2 ) Pull the strength envelope of this Leighton Buzzard sand and depict the features of the strength of the sand ; ( 3 ) Discourse the strength of the sand under a drained conventional triaxial compaction trial with the initial emphasis province of the dirt being ( paÃâ ? = 30 kPa, q = 0, ) . A: Determine dirt parametric quantities M and MMC ; Shear emphasis Q kPa 250 200 150 100 50 0 A 3 ( 30, 0 ) vitamin D 3 0.9 Bacillus 1.24 C 0 50 100 150 200 Mean effectual emphasis P ââ¬Ë kPa 347.2.4 Residual province strength of clayey dirtsAfter probes on landslides in the late fiftiess, it was found that the shearing opposition of dirt in a figure of instances was much smaller than the ââ¬Å" concluding â⬠critical province strength measured in the research lab. The construct of residuary strength is formed ( Skempton, 1964 ) Residual strength is defined as the shear strength of a dirt that can be mobilised on a polished sliding surface, after it has been formed through the dirt due to the alliance of its Platypoecilus maculatus atoms. For any given dirt it is the minimal strength come-at-able. There are four major facets of the residuary strength, viz. Dirt must hold adequate plate-like atoms so that a smooth slickensided surface can be formed. The skiding surface of well-aligned dirt atoms must be for the residuary strength to be mobilised. The skiding surface of well-aligned Platypoecilus maculatus atoms can ease residuary failure merely along that surface. 4. The residuary sliding surface one time formed is normally non modified by subsequent distortions of comparatively little magnitude. The residuary strength of a dirt is chiefly dependent on the mineralogy of the dirt: the clay fraction. Clay fraction uc defined as the weight of the clay particles less than 0.002 millimeter in size over the entire weight of the dirt sample. uc is defined as Iâ⬠° = G0.002 ( 58 ) cG Some experimental informations on the fluctuation of the critical province strength and residuary strength with clay fraction is shown In Fig. 15 ( From Skempton, 1984 ) . The undermentioned information can be obtained this information. ( 1 ) For a dirt with a clay fraction less than 25 % the concluding strength is the critical province strength. The strength is independent on clay fraction. Otherwise, the concluding strength of the dirt is its residuary strength. 0 20 40 60 80 10 0 Clash angle ( Aà ° ) 34 28 22 16 10 4 residuary province critical province Clay fraction ( % ) Fig. 15 Variation of the critical province and residuary province strengths with clay fraction 35 With 50 % & gt ; uc & gt ; 25 % , both critical province and residuary province strengths vary with clay fraction. With uc & gt ; 50 % , critical province and residuary province strengths are different, but remains with any alteration of clay fraction in the scope. The concluding strength of a dirt, expressed as a clash angle, may change from 32Aà ° to every bit low as 6Aà ° with the fluctuation of the clay fraction.
Saturday, September 14, 2019
George says several times ââ¬ËIf I was alone I could live so easyââ¬â¢ Do you think he is right? Essay
It was obvious that George and Lennie were great friends as they always stood by each other and were rarely seen apart. However it was not the perfect friendship, as the book clearly establishes. George is often agitated by Lennieââ¬â¢s childish ways and he states that without Lennieââ¬â¢s company he could have a much better life, ââ¬ËI could get along so easy and so nice if I didnââ¬â¢t have you on my tailââ¬â¢. George constantly has to look out for Lennie and itââ¬â¢s as if he is responsible for two people. We see this early in the book when George says ââ¬Ëyou gonna be sick like you was last nightââ¬â¢. George knows deep down that he doesnââ¬â¢t have to do this for Lennie but he continues to care for him as if he was his child. If George lived alone then he would only have to look out for himself and he would not have to be constantly checking Lennie and sorting his problems out. Lennie has the mind of a kid, therefore forcing George to treat him like one. He has to give in to him lots of times and he finds him self comforting him continuously. For example when Lennie cried about the mouse, George had to promise him a new one to get him to stop. This is probably very tiring for George, but he has to do it otherwise Lennie could do something stupid like harming himself. Lennie continually annoys George by being immature and dumb. George often says ââ¬ËJesus Christ, youââ¬â¢re a crazy bastardââ¬â¢. We can see that Lennie frequently drives him to using the lordââ¬â¢s name in vain. George can not always be a happy and cheery man, as he has to be bossy and constantly worrying about Lennie. It canââ¬â¢t be much fun for George to have to watch his every move 24/7. He scarcely has enough time to look after himself. We see this when he has to warn Lennie to stay away from Curleyââ¬â¢s wife ââ¬ËDonââ¬â¢t you even take a look at that bitchââ¬â¢. I get the impression that George has not had much experience with women, how could he? What with Lennie always being there behind him. This has resulted in him not having a very good attitude towards women and it is a bad fault in his personality. If George was on his own, he could get to know the opposite sex better and maybe find a girlfriend. He definitely would like one as he says ââ¬ËI could live so easy, and maybe have a girlââ¬â¢. The worst thing about George always being with Lennie is the amount of trouble he has to get in because of Lennieââ¬â¢s senseless actions. This was first shown when we hear about the girl from Weed, if it werenââ¬â¢t for Lennie the pair would never have had to leave. The interview with the boss was also very risky and George had to use his quick thinking and cleverness to think up things to cover for Lennie. If he were on his own, he would have had no bother and could basically have just strolled on to that ranch. Although Lennie is good company for George and they are close friends, I think that George would be better off without Lennie. It would be a huge weight off his shoulders and he could get on with his own life. Lennie is not his responsibility, and Iââ¬â¢m sure if Lennie had sense he would want his best friend to concentrate on their own dreams and goals instead of waiting on him all the time. Lennie is not the type of company that George needs; he is still lonely deep down.
Subscribe to:
Posts (Atom)