Friday, September 6, 2019
Counter Point Essay Example for Free
Counter Point Essay Starbucks is one of the most successful business serving coffee and drinks beverage. Starbucks is known for serving hot and cold coffee beverage with a high quality products. Starbucks went public in 1992 with a priced at $17 share and the stock jumped to $21 at the opening bell. By 2007 Starbucks had become one of the most widely recognized and admired global brands. In addition, by 2008 Starbucks has 4500 locations in 43 countries out side the United States. Overall Starbucks known as a good business with a good standing. Starbucks has many problems starting with the price. Starbucks coffee is more expensive than other competitors like Dunkinââ¬â¢ Donuts and Caribou. In addition, Dunkinââ¬â¢ Donuts offering drinks at prices 20 percent lower than Starbucks. For example, Kathleen Brown, a 30-year-old Boston lawyer, used to treat herself to a $4 Starbucks Caramel Macchiato but switched to Dunkinââ¬â¢ Donuts. Also, she mention that with Starbucks price for a cup of coffee she can buy a cup of coffee with a sandwich from Dunkinââ¬â¢ Donuts. Moreover, Starbucks did not pay attention to the customer comment cards and they did not respond to their customers needs or their feedback about the product or the service. Starbucks should ask the customers about what type of milk they want. Another problem is that Starbucks used to offer just hot beverage and they thought cold coffee like Frappuccino was not a true coffee drink. After Starbucks knew their competitors were offering a cold beverage they started to serve cold beverages and they tested their concoction with customers and again customers approved. Moreover, Starbucks stores were reconfigured with fewer comfy chairs and less carpeting making Starbucks a less inviting place in which to linger over a cup of coffee. In the beginning Starbucks had a problem and they could not advertise because the cash was tight. Finally, Starbucks machines were so tall that the customers could no longer see the coffee being made. Starbucks need to work to reduce the price of their products since most of the people from the middle and low income cant offer their products. If Starbucks want to increase their sales and earn more profit they should reduce their prices to let the people from all class can offer their products and be satisfied but Starbucks did not do any changes to their prices because there vision was to educate consumers about fine coffees and brought from a good place. Starbucks did lots of thing to increase their profit and to be more successful. For example, Starbucks opened many stores and some times in the same area just to help to serve the customers in a good way. For example, Starbucks opened many store to help the customers get what they want in a short time. Starbucks had learned that nearly stores did not necessarily hurt one anotherââ¬â¢s sales and in fact could actually help. Moreover, more stores meant a better chance for customers to find a short line or empty parking space and for Starbucks to capture the sale. Also, Starbucks open a drive through service to help the parents with young children and the drive through help Starbucks earned more profit and be more successful. Starbucks choose their store location by focusing on the are population and a matrix of regional demographic profiles and an analysis of how best to leverage operational infrastructure. In addition, Starbucks planned at least one big community event to celebrate its arrival and offer two free drink coupons with the note asking the customers to share Starbucks with a friend. In addition, since Starbucks know that there prices was high so they try to offer a seasonal offering such as a strawberry and cream Frappuccino in the summer and gingerbread latte at Christmas. Starbucks did not want to loose their money and workers so they developed a 24-hour training program converting Coffee Knowledge (four hours). Brewing the Perfect Cup (four hours), Customers Service (four hours) and also basic skills. Starbucks wants to have a good working environment and to be loyal to their employees so they provide their employees with a health insurance to all partners even the part-timers. Keeping the same employee with a full benefits would cost Starbucks $1500 rater than loosing $3000 to train a new hire. Starbucks work to develop their product mix by adding music and book to their customers. Starbucks knew their prices are expensive and they did a great thing to solve this problem by opening many stores and provide a nice atmosphere to their customers by serving many kinds of snack, cold and hot beverages, sandwiches. ââ¬Å" Customers say one of the reason they come to Starbucks it because they can discover new things, a new coffee from Rwanda, a new food item. The solutions that I considered is Starbucks need to pay attention to their customers feedback for the price of the product and to try to make their price reasonable to the people over the whole world. Since many people like the atmosphere in Starbucks and its more fancy than Dunkinââ¬â¢ Donuts but the price in Starbucks need to recognized and reduce. There are many solutions I recommend to Starbucks. First, the most important is the price. Starbucks need to find a solution with their product price since their price is much more expensive than other competitors like Dunkin Donuts. Most of the people switch to Dunkin Donuts because their product mix are cheaper. Moreover, they should offer free refills to their customers and make sure to give their customers a chance to give their feed back on the product. According to the case Americans will never pay $1.50 for a cup of coffee. So because of that Starbucks need to reduce their price to be more successful. In conclusion, Starbucks is a powerful business with a good product mix ( non coffee drinks, food items, music, books). Moreover, Starbucks has many stores and sometime in the same area just to help their customers to get their need in a very short of time with offering their customers a drive through service and that cause the profit of around $1.3 million compared to $1 million at stores without a window. But the price of their products is so expensive than Dunkinââ¬â¢ Donuts.
Applying Resource Based View to Strategic Human Resource Essay Example for Free
Applying Resource Based View to Strategic Human Resource Essay What is Resource Based View in Strategic Management? Almost all business management courses have a module that includes study ofà strategic management. Our homework helps experts have expertise in the field of strategic management. There are different perspectives and approaches to field of strategic management. This blog post would discuss in detail what resource based view of strategic management is. This perspective stresses and based on the perspective that resources of the company whether tangible or intangible like brand name, assets, cash, customer loyalty, research and development capabilities are an important and main aspect while forming or pursuing a unique strategic position for a company. This concept of strategic management rather than being driven by the environment is internally resource driven and in this perspective of strategic management the organization is viewed as a collection of capabilities and competences. Organizations leverage new actives from its existing core competencies. According to Barney (1991) analysis of the impact of a firmââ¬â¢s environment on its competitive position is based on two assumptions. First, firms within an industry or a strategic group are identical in terms of strategic relevant sources they control and the strategies they pursue and second, these models assume that should resources heterogeneity develop in an industry or group will be very short lived because the resources that firms use to implement their strategies are highly mobile i. e. they can be bought or sold in factor markets (Barney, 1991). Resource based view assumes that companies within an industry or group may be heterogeneous with respect to the strategic resources they control and these are not perfectly mobile, thus heterogeneity can be long lasting (Barney, 1991). Simply, it is suggested that firm resources may be heterogeneous and immobile. According to Daft (1983), firm resources include all assets, capabilities, organisational processes, firm attributes, information, knowledge, etc. controlled by a firm that enable the firm to conceive of and implement strategies that improve its efficiency and effectiveness. According to Barney (1991), firm resources that hold the potential for sustained competitive advantage must have four attributes which are valuable, rare, In-imitable, and non-substitutable. So in resource based view of the firm, strategy of the firm is basically dependent on firmsââ¬â¢ resources. This view again as the market based view is focus on some important aspects but at the same time ignores some other basic aspects of strategy formulation for a company. So resource based view of the firm is also not a balanced view. We hope that this blog post is useful for the students and practitioners of the field ofstrategic management. Please email us [emailprotected] comà if you need anyà strategic managementà helpregarding the module of strategic management. The Resource Based View (RBV), argued by some to be at the foundation of modern HRM,[13]à focusses on the internal resources of the organisation and how they contribute to competitive advantage. The uniqueness of these resources is preferred to homogeneity and HRM has a central role in developing human resources that are valuable, rare, difficult to copy or substitute and that are effectively organized. Overall, the theory of HRM argues that the goal of human resource management is to help an organization to meet strategic goals by attracting, and maintaining employees and also to manage them effectively. The key word here perhaps is fit, i. e. a HRM approach seeks to ensure a fit between the management of an organizations employees, and the overall strategic direction of the company (Miller, 1989). The resource-based view to strategic human resource management (SHRM) focuses on the costly to copy attributes of the firm as the fundamental drivers of performance and competitive advantage (Cooner 1991). Linking to the understanding of the resource based view of the firm; Barney (1991) described competitive advantage as ââ¬Å"when a firm is implementing a value creating strategy not simultaneously being implemented by any current or potential competitorsâ⬠. The task is to maintain this competitive advantage in such a way that competitorsââ¬â¢ efforts to replicate that advantage are frustrated and eventually cease. The resource-based view focuses on the promotion of sustained competitive advantage through the development of the human capital rather than merely aligning human resources to current strategic goals (Torrington et al 2002). This essay will show various ways on how the resource-based view of SHRM in organisations can contribute to enhanced organisational performance. Human resources can provide competitive advantage for the business, as long as they are unique and can not be copied or substituted for by competing organisations, competitive success not coming from simply making choices in the present, but from building up distinctive capabilities over significant periods of time (Boxall 1996).
Thursday, September 5, 2019
Learning a second language
Learning a second language 1 Can learning an L2 cause L1 attrition? Attrition is the non-pathological, not age-related loss of a language. Speakers learning a second language often experience a change in the way they process their native language, a process called L1 attrition. L1 attrition often occurs in migrant individuals, since they immerse themselves fully into another language. It is expected that, as someone learns an L2 in an immersion environment, some crosslinguistic interference might happen. This interference can happen in both directions: just as the L2 is influenced by the L1, the L1 can assimilate to the L2. The present paper discusses the possibility of L1 phonetic attrition caused by the acquiring of an L2. Phonetic attrition is the loss of phonetic segments and/or suprasegmental features and/or the adaptation to other phonetic units. This paper will discuss how phonetic attrition can affect the production of sounds and suprasegmental features, specifically peak alignment. It will also discuss how phonetic attrition can happen in be ginner learners in classroom settings as well as the more expected case of complete language immersion. Mennen (2004) pursued the question of whether Dutch non-native speakers of Greek are able to produce cross-linguistic differences in the timing of peak alignments in both their languages. He conducted two experiments to answer his question. The first experiment tested whether experiences L2 speakers (Dutch non-native speakers of Greek) can produce accurate f0 timing in their L2 (Greek). A further aim of this study was to see whether an influence from the L1 (Dutch) can be observed in the L2. The participants were divided into three groups: five native Dutch speakers (D), five native Greek speakers (G), and five non-native (Dutch) speakers of Greek (DG). All participants in the LG group were late bilinguals with experience in their L2 ranging from 12 to 35 years, used their L2 regularly, and were college educated. The materials used in the first experiment were 20 declaratives in Greek and 40 declaratives in Dutch (further divided into 20 declaratives containing short vowels and 20 declaratives containing long vowels). The participants were asked to read the test sentences twice in a random order. Group D read two sets of sentences in Dutch (declaratives containing short and long vowels), awhile groups G and DG only read the set of sentences in Greek. The readings were recorded and their peak alignment onset measured. The speakers were asked to repeat any mispronounced sentences. When comparing group DGââ¬â¢s alignment data to that of groups G, the results showed clear differences in their peak alignment times. Four out of the five L2 learners aligned their peaks earlier than native Greek speakers. When compared to groupââ¬â¢s D data, the peaks alignments were closer in time but still not native-like. This result showed that L2 speakers could not reach a native-like production of peak alignments in their L2, Greek. At the same time, this shows cross-linguistic influence from the L1 into the L2. The second experiment was conducted to investigate if Dutch non-native speakers of Greek were able to maintain correct peak alignment times in their L1. The materials and procedure were the same as in experiment 1, as for the participants, only groups D and DG were required for this experiment. The results from this second experiment showed a difference in peak alignment times in both sets of sentences in Dutch for both groups; this difference however was smaller in the DG group, and therefore non-native like. From both these experiments, Mennen concluded that Dutch on-native speakers of Greek fail to produce native-like peak alignments in their L1 and L2, which can be interpreted as L1 phonetic attrition. In 2012, Chang conducted an experiment with the goal of examining the extent to which the L1 can change during L2 learning in beginner L2 learners, and also if the L1 would be affected within the first weeks of acquisition. For this experiment, two groups of participants were recruited: an L2 learner group, consisting of 36 adult nave speakers of American English learning Korean and a control group consisting of nine native Korean speakers. The L2ers group lived in a South Korean university campus and were starting an intensive six week course of introductory Korean (the equivalent of a semester of college-level Korean classes) The participants had no significant previous exposure to Korean and although they were living in Korea, their interactions were limited to other L2 learners. The materials in this experiment consisted of 22 Korean and 23 English monosyllabic items. There were 15 critical items beginning with plosives. The participants were asked to read the monosyllables and their VOT for the critical items was recorded. The results from this experiment showed that by week five, phonetic attrition of the learnersââ¬â¢ English in approximation to Korean. That is to say, the VOT of the learnersà ¢â¬â¢ English plosives stopped being native-like and drifted into being more like the Korean stops they had been learning. The learnersââ¬â¢ production of English voiceless stops and Korean aspirated stops lengthened in VOT in a manner that suggests they were coordinated. From this experiment, Chang concluded that phonemic attrition can occur rapidly, in a class-room setting, due to cross-linguistic interference even during the first weeks of instruction. The next study, by Mayr et al. (2013), investigates whether L1 attrition has occurred in the speech of a monozygotic twin who emigrated from the L1 environment 30 years ago. This was tested by comparing her speech productions to those of her identical twin sister, who has been living in the L1-speaking environment all her life. The participants consisted of identical twin sisters MZ and TZ, both of which were consecutive Dutch-English bilinguals. They were 62 years old at the time of the study. Their language background is as follows: MZ and TZ grew up together in the Netherlands, where they acquired their L1. In high school, both were introduced to English as their L2 and later acquired jobs in an international telecommunications company, where they only spoke English. At age 32 MZ left the Netherlands to live in the UK, where she had a daughter (also Dutch-English bilingual). MZ reported to preferring English in her everyday life, but speaks both Dutch and English with her daughter (she also reported frequent code-switching with her daughter). In contrast, TZ stayed in the Netherlands her whole life and stopped using English once she left her telecommunications job. The materials consisted of 20 monosyllabic Dutch target words and 20 monosyllabic English target words. The participants were asked to produc e each target word four times, randomly, in the following fashion: ââ¬Å"I say Xâ⬠(for English targets) and ââ¬Å"Ik zei Xâ⬠(for Dutch targets). This resulted in 80 Dutch tokens and 96 English tokens per participant. The researchers measured the VOT of plosives in both languages. The data for each language was recorded in different days (appropriately far from each other) to avoid the effects of language suppression and activation during the process. The results of this experiment showed clear phonetic attrition in MZââ¬â¢s production of voiceless plosives, which indicate cross-linguistic assimilation patterns. She produced VOT values that are longer than the Dutch norm, while TZââ¬â¢s VOT values were perfectly within the Dutch norm. MZââ¬â¢s VOT values were much more similar to her English VOT values than to her sisterââ¬â¢s Dutch VOT values. The researchers concluded that this difference was caused by cross-linguistic influences from MZââ¬â¢s L2 into h er L1, which caused L1 attrition. They also mentioned that MZââ¬â¢s code switching interactions with her daughter might have a large part in her L1 attrition, since bilinguals that code switch are more likely to be perceived as foreigners or more heavily accented by native speakers. The last study, by de Leeuw et al. (2010), investigated how the acquisition of an L2 affects the accentedness of the L1 in two different consecutive bilingual groups with different L2s by comparing them to monolingual native speakers of their L1. For this experiment, 34 German immigrants in Anglophone Canada, 23 German immigrants in the Netherlands, and five German monolingual controls in Germany were recruited. The speakers were questioned on different aspects of their language usage, such as the frequency with which they used their L1, or if they code-switched between languages (this question was not asked explicitly). A group of 19 German listeners were also recruited. They had a minimal or non-existent knowledge of English and Dutch and were not bilingual. The materials consisted of speech samples of a film retelling (not a script, but a scene to describe spontaneously). The participants were asked to record the speech samples in their own homes to ensure their comfort. One speech sample from each participant was obtained and then presented to the group of 19 German judges, which then assessed the speech samples in a scale from 1(certain of non-native status) to 6 (certain of native status). The results showed that biling ual speakers (both English and Dutch as L2) are more likely to be perceived as foreigners than the German control group. Also, that the amount of informal use of the L1 does not impact on the degree of perceived foreign accent, and that speakers who use this language for professional purposes are less likely to be perceived as foreigners. From these results phonetic the bilingual speakers can be concluded to experience L1 phonetic attrition, which would explain why their L1 production was perceived as foreign. In the present paper, the possibility of phonetic attrition as a result of acquiring a second language was assessed. The results from the previously discussed experiments all point towards the obvious conclusion that phonetic attrition can be caused by cross linguistic influence from the L2 into the L1. The results also show that phonetic attrition can occur rapidly among beginner L2 learners in classroom settings, but that it is more prominent in immersion settings, such as that of immigrants. Although phonetic L1 attrition, and L1 attrition in general, is a common phenomenon among immigrants and there is no evidence that it affects L1 speech in a way that prevents other speakers of the language from recognizing what has been said, there is a prominent negative opinion about the process. This could be caused by the pride that countries take in their languages and how their languages are representative of their traditions. Even then, L1 attrition should be regarded as a completely normal process, as it does not hinder, in any way, the ability of a person to communicate in their L1. Further studies of L1 attrition could help dispel the negative views that surround the subject, as it is an area not yet developed completely. For example, a better definition of the word ââ¬Ëlossââ¬â¢, used to describe the process, might help dispel the stigma behind attrition. The ââ¬Ëlossââ¬â¢ of the native language does not give any indication as to how permanent or irreversible i t is. It also does not provide any clue as to how deeply it affects the L1 and how it might impact the lives of those who go through this process. References Chang, C. E. (2012). Rapid and multifaceted effects of second language learning on first language speech production. Journal of Phonetics 40, 249-268. de Leeuw, E., I. Mennen J. M. Scobbie. (2013). Dynamic systems, maturational constraints and L1 phonetic attrition. International Journal of Bilingualism 17:6 Mayr, R., S. Price I. Mennen (2012). First language attrition in the speech of Dutchââ¬âEnglish bilinguals: The case of monozygotic twin sisters. Bilingualism: Language and Cognition, 15.4, 687-700. Mennen, I. 2004. Bi-directional interference in the intonation of Dutch speakers of Greek. Journal of Phonetics 32, 543-563.
Wednesday, September 4, 2019
The Yellow Wallpaper -- essays research papers
In "The Yellow Wallpaper", by Charlotte Perkins Gilman, there is a dominant/submissive relationship that exists between an oppressive husband and his submissive wife. This oppressive husband leads his wife from a state of depression to a state of insanity and finally, to a state of isolation. Had the husband not been so oppressive upon his wife, he could have realized her problem and resolved it without tearing himself away from her. The woman does not become insane because of the wallpaper alone; rather, it is the strict guidelines her husband sets for her that prompt her eventual insanity and isolation. As the story begins, the woman -- whose name we never learn -- tells of her depression and how it is dismissed by her husband and brother. "You see, he does not believe I am sick! And what can one do? If a physician of high standing, and one's own husband, assures friends and relatives that there is really nothing the matter with one but temporary nervous depression -- a slight hysterical tendency -- what is one to do?" (Gilman 658). These two men, both doctors, are apparently unable to admit that there might be more to her condition than just stress and a slight nervous condition. Even when a summer in the country and weeks of bed-rest don't help, her husband refuses to accept that she may have a real problem. Throughout the story there are examples of the dominant/submissive relationship. She is virtually imprisoned in her bedroom, supposedly to allo...
Tuesday, September 3, 2019
Supporting Ban on Pete Rose from Baseball Hall of Fame Essay examples -
What has the game of baseball meant for Americans? For many baseball is a game of integrity, honesty, and without a doubt skill. When one of these factors is allowed to overtake the other it leaves the game unbalanced with lost priorities. Like everything else in life, baseball has rules and regulations which should be followed and enforced. The Baseball Hall of Fame honors persons who have excelled in playing, managing, and serving the sport. Having ten years of experience in the game and five years of retirement players who pass a screening committee become eligible to be voted into the Hall of Fame. The main discussion now is whether or not to allow Pete Rose into the Baseball Hall of Fame, after betting on baseball while he was a player and manager of the Cincinnati Reds. There are several regulations which ban certain individuals from acceptance into the Hall of Fame such as Rule 21. Pete Rose wouldn't be the first person who has been banned from baseball. Allowing Pete Rose into the hall of fame would deface the integrity of the game. Pete Rose was with out a doubt an outstanding baseball player. Having the highest number of hits ,4,256, in the history of baseball while playing for the Cincinnati Reds making him a great candidate for the Hall of Fame. After retiring in 1986 he became the manager for the Cincinnati Reds during 1987 and 1988 (). While he was managing the Cincinnati Reds he was investigated and was found guilty of gambling on the game. Discovered evidence shows that Rose began betting in the fall of 1984. When Rose was first confronted with this offense he denied all charges and swore under oath that he had never bet on Major League Baseball or had any sort of affiliation with anyone w... ...the responsibility to manage a team of drug-enhanced players and pain-killer abusing pitchers. Until baseball finds its lost priorities it has lost respect and is going to represent a sport of players who would rather sell their souls, and get a way with it, than to be true honest ball players. Pete Rose should not be allowed back in baseball and definitely not in the Hall of Fame. He should at least have the mentality of a ten year old in having the ability distinct what is right from wrong. Not only has he degraded the game but allowing him back into baseball would degrade the sport and the Hall of Fame itself making it degrading as well as unfair for those who are already in the Hall of Fame. How has our nations favorite past time mutated into something that we can't even believe or even have enough trust in our player's integrity for the game to be honest?
Monday, September 2, 2019
Human Variations in High Altitude Populations :: Tibet Himalayans Adaptation Essays
Human Variations in High Altitude Populations Thesis:The purpose of this paper is to describe the high altitude stresses and the general adaptations made by the Tibetan population in the Himalayas and the Quechua in the Andes. à à à à à à à à à à à à à à à I Introduction à à à à à à à à à à II Background à à à à à à à à à à à à à à à à à à à à A Quechua People à à à à à à à à à à à à à à à à à à à à B Tibetan People à à à à à à à à à à III General Adaptations à à à à à à à à à à à à à à à à à à à à A Physical à à à à à à à à à à à à à à à à à à à à 1 Growth à à à à à à à à à à à à à à à à à à à à 2 Development à à à à à à à à à à à à à à à à à à à à 3 Core temperature à à à à à à à à à à à à à à à à à à à à 4 Extremity temperature à à à à à à à à à à à à à à à à à à à à B Non- Physical à à à à à à à à à à à à à à à à à à à à 1 Clothing à à à à à à à à à à à à à à à à à à à à 2 Houses à à à à à à à à à à à à à à à à à à à à 3 Schedule à à à à à à à à à à à à à à à V Conclusion à à à à à ââ¬Å"Some ten to twenty-five million people (that is less than 1% of the earthââ¬â¢s population) currently make it[high altitude zones] their home(Moran,143).â⬠The adjustment high altitude populations must make are firstly physical and secondly cultural. Although most people adapt culturally to their surroundings, in a high altitude environment these cultural changes alone arenââ¬â¢t enough. Many physical adaptations that reflect ââ¬Å"the genetic plasticity common to all of mankind(Molinar,219)â⬠have to be made to survive and even more than that thrive in this type of environment. In this paper I will describe the high altitude stresses. Along with adaptations made by the populations living in them. The two high altitude populations which I will examine in this paper are the Tibetan people of the Asian Himalayas and the Quechua of the South American Andes. The Quechua are an Indian people who inhabit the highlands of Peru and Bolivia. They speak Quechua, which is a branch of the Andean-Equitorial stock. They show many remnants of Inca heritage by their houses, music, and religion which has pagan rites under the Roman-Catholic surface. Their villages consist of kin groups . Their marriage partners are taken from within each village. Agriculture is the dominant subsistence pattern in the central Andean region but the Nunoa region where the Quechua reside can only support a few frost-resistant crops. Which include bitter potato, sweet potato, and a few grain crops of quinoa and canihua. The rest of the fruits and vegetables of the Quechua come from the eastern mountains on itââ¬â¢s way to the markets. The most important subsistence pattern for the Quechua is stock raising. Which is limited to the few animals that do well in the high altitudes. Their stock include alpacas,llamas and sheep. à à à à à In the Himalayas only ââ¬Å"5% of the geographical area(Baker,36)â⬠can be used for agriculture. The main crops are barley, wheat and buckwheat. The crops are grown between 3,500 and 4,300 meters. These few crops are threatened by drought, hail, frost, snow and erosion. The Himalayas also have extensive pasture areas which are used by the nomadic and sedentary peoples. The higher regions have pastures where yak, sheep, and goats are the main animals used.
Sunday, September 1, 2019
Pipeline Hydraulics Design Basis Engineering Essay
It includes the pipe and flow features of the transported fluid under specified operating conditions as established in the design footing.SpeedThe grapevine has to be laid for the distance of 770km between Portland and Montreal, the fluid in the pipe is Light Crude Oil. Speed of flow in a grapevine is the mean speed based on the pipe diameter and liquid flow rate. Its choice is first measure in the scheming process of our undertaking. The flow speed can hold both advantages and drawbacks. High speeds can do turbulency, and the contact of the fluid on the walls of the pipe which will do harm to the pipes and finally gnaw away the pipe, while low speed on the other manus can do the deposition of particulates in the line and cleanliness of the fluid will be compromised. Therefore, to avoid these problemsliquid lines are usually sized to keep a speed sufficient to maintain the solid atoms from lodging and besides to forestall the eroding of the pipe. Under these considerations the recommended speed is in the scope of 3ft/s to 8ft/s. From this selected scope of speed we have to choose a individual speed. The speed we have selected for our line is 5ft/s. This is the intermediate speed from the recommended scope and all the farther computations will be done on this speed.Velocity SelectionThe scope as mentioned above is taken every bit 3ft/s to 5ft/s. The following measure is to choose a individual speed from this scope. We have selected 5ft/s for our line. The ground for this speed choice is the tradeoff between pipe diameter and figure of pump Stationss. Harmonizing to continuity equation if we increase the speed, the corresponding diameter will cut down but the force per unit area loss will increase due to which a higher figure of pump Stationss are required. Similarly if we decrease the speed, the figure of pump Stationss will cut down but the diameter will increase for a given flow rate. Since the grapevine is laid over a long distance, the grapevine cost holds the major portion of the capital investing hence increasing the diameter will adversely impact the economic sciences of grapevine. This tradeoff is seeable in the computations shown in appendix A. The other ground for taking this speed is that if the flow rate fluctuates in the hereafter for any ground the diameter selected from this intermediate speed will be able to suit those fluctuations without impacting our system.Diameter CalculationCalculation of the diameter is the nucleus of the hydraulic designing.The diameter selected should be able to back up the emphasiss on the pipe, the capacity of the fluid and minimise the force per unit area losingss. Under given flow rate and false speeds, we can cipher the pipe diameter utilizing continuity equation:V=Q/AVolt: Flow speed Q: Volume flow rate A: Cross sectional country The flow rate is given as 109,000bbl/day or 7.1ft^3/s. The diameters are calculated at 3, 4, 5ft/s speeds and the several diameters are 20.83 â⬠, 18.04 â⬠and 16.14 â⬠.Choice of DiameterAs mentioned above 5ft/s is selected as the recommended speed and the corresponding internal diameter ( ID ) is 16.14in.Nominal Pipe SizeFor the internal diameter later we have to cipher the nominal pipe size. To cipher the nominal diameter we refer to the ââ¬Å" Pipe Data â⬠provided for the Carbon Steel. From the tabular array shown in appendix B, it is found out that attendant nominal pipe size will be 18in.Features of FlowDifferent flow belongingss are calculated to find the government of flow, losingss in the pipes. The nature of the flow can be laminal or turbulent.There are two types of the losingss. Major losingss include the losingss due to clash in consecutive pipes and minor losingss due to decompression sicknesss, valves, tees. To cipher these we will be covering with Reynolds figure ( for nature of flow ) , Moody diagram ( for clash factor ) and head loss computations.LosingssAs the fluid flows through the pipe there is clash at the pipe wall and unstable interface in the consecutive parts of the pipe due to interference between the fluid and the walls of the pipe. This clash consequences in consequences in the loss of energy in the lineat the disbursal of liquid force per unit area and the losingss are known as the major losingss. Pipe systems consist of constituents in add-on to consecutive pipes. These include decompression sicknesss, valves, tees etc and add farther to the losingss in the line. These losingss are termed as minor losses.Experimental information is used to cipher these losingss as the theoretical anticipation is complex.Major LosingssThe force per unit area bead due to clash in a grapevine depends on the flow rate, pipe diameter, pipe raggedness, liquid specific gravitation, and viscousness. In add-on, the frictional force per unit area bead depends on the Reynolds figure ( and therefore the flow government ) . Therefore, the fluid in the grapevine will undergo force per unit area losingss as it runs in the line and cut down the operating force per unit area. This loss needs to be recovered and to keep the force per unit area pumps are installed at specific locations harmonizing to the demand ( pumps are discussed in Chapter in front ) . These force per unit area losingss are calculated by ut ilizing the Darcy-Weisbach expressiona?â⬠P = degree Fahrenheit ( L/D ) ( V^2/2 ) I?Where, f=Darcy clash factor, dimensionless, normally a figure between 0.008 and 0.10 L=Pipe length, foot D=Pipe internal diameter, foot The force per unit area loss for speed of 5ft/s comes out to be 9625.15psi. All the relevant computations are shown in appendix A.Minor LosingssReal grapevine systems largely consist of more than consecutive pipes. The extra constituents ( valves, tees and decompression sicknesss ) add to the overall loss of the system. These are termed as minor losingss. In instance of really long pipes, these losingss are normally undistinguished incomparison to theA unstable clash in the length considered. But in caseA of short pipes, these minor losingss may really be major losingss such as inA suction pipe of a pumpwith strainer and pes valves.These losingss represent extra energy dissipation in the flow, normally caused by secondary flows induced by curvature or recirculation. Minor loss in diverging flow is much larger than thatA in meeting flow. Minor lossesgenerally increase with an addition in the geometric deformation of the flow. Thoughminor losingss are normally confined to a veryA short length of way, the effects mayA notdisappear for a considerable distance downstream. ItA is undistinguished in instance ofA laminar flow. The force per unit area bead through valves and adjustments is generallyexpressed in footings of the liquid kinetic energy V2/2g multiplied by a head loss coefficient K. Comparing this with the Darcy-Weisbach equation for caput loss in a pipe, we can see the undermentioned analogy. For a consecutive pipe, the caput loss H is V2/2g multiplied by the factor ( fL/D ) . Therefore, the caput loss coefficient for a consecutive pipe is fL/D. Therefore, the force per unit area bead in a valve or adjustment is calculated as follows:h=K ( V^2 ) /2gWhere, h=Head loss due to valve or suiting, foot K=Head loss coefficient for the valve or adjustment, dimensionless V=Velocity of liquid through valve or adjustment, ft/s g=Acceleration due to gravitation, 32.2 ft/s2 in English units The caput loss coefficient K is, for a given flow geometry, considered practically changeless at high Reynolds figure. K increases with pipe raggedness and with lower Reynolds Numberss. In general the value of K is determined chiefly by the flow geometry or by the form of the pressureloss device. Minor loss is by and large expressed in one ofA the two ways In footings of minor loss factor K. In footings length, tantamount to aA certain length of consecutive pipe, usuallyexpressed in footings of figure of pipe diameter. The minor losingss for our system are calculated and consequence in a really low value and can easy be neglected.Reynolds NumberFlow in a liquid grapevine may be smooth, laminar flow, besides known as syrupy or streamline flow. In this type of flow the liquid flows in beds or laminations without doing Eddies or turbulency. But as the speed increases the flow alterations from laminar to turbulent with Eddies and turbulencies. The of import parametric quantity used in sorting the type of flow in the pipe is called Reynolds Number. Reynolds figure gives us the ratio of inertial forces to syrupy forces and is used to find the nature of flow utilizing the recommended speed and the internal diameter. Reynolds figure is given byRe = I?VD/Aà µFlow through pipes is classified into three chief flow governments and depending upon the Reynolds figure, flow through pipes will fall in one of the undermentioned three flow governments. 1. Laminar flow: R & lt ; 2000 2. Critical flow: R & gt ; 2000 and R & lt ; 4000 3. Disruptive flow: R & gt ; 4000Friction FactorFriction Factor is a dimensionless figure required to cipher the force per unit area losingss in the pipe. Trials have shown that degree Fahrenheit is dependent upon Reynolds figure and comparative raggedness of the pipe. Relative raggedness is ratio of absolute pipe wall raggedness Ià µ to the pipe diameter D. For laminar flow, with Reynolds figure R & lt ; 2000, the Darcy clash factor degree Fahrenheit is calculated from the simple relationshipf=64/RFor laminar flow the clash factor depends merely on the Reynolds figure and is independent of the internal status of the pipe. Therefore, irrespective of whether the pipe is smooth or unsmooth, the clash factor for laminar flow is a figure that varies reciprocally with the Reynolds figure. For turbulent flow, when the Reynolds figure R & gt ; 4000, the clash factor degree Fahrenheit depends non merely on R but besides on the internal raggedness of the pipe. As the pipe raggedness additions, so does the clash factor. Therefore, smooth pipes have a smaller clash factor compared with unsmooth pipes. More significantly, clash factor depends on the comparative raggedness ( Ià µ/D ) instead than the absolute pipe raggedness Ià µ . In the disruptive part it can be calculated utilizing either the Colebrook-White equation or the Moody Diagram.Colebrook-White EquationThe Colebrook equation is an inexplicit equation that combines experimental consequences of surveies of turbulent flow in smooth and unsmooth pipe The Colebrook equation is given as:1/a?sf = -2log ( ( Ià µ/3.7D ) + ( 2.51/Rea?sf ) )But the turbulent flow part ( R & gt ; 4000 ) consists of three separate parts: Turbulent flow in smooth pipes Turbulent flow in to the full unsmooth pipes Passage flow between smooth and unsmooth pipes For disruptive flow in smooth pipes, pipe raggedness has a negligible consequence on the clash factor. Therefore, the clash factor in this part depends merely on the Reynolds figure as follows:1/a?sf = -2log ( 2.51/Rea?sf )For disruptive flow in to the full unsmooth pipes, the clash factor degree Fahrenheit appears to be less dependent on the Reynolds figure as the latter additions in magnitude. It depends merely on the pipe raggedness and diameter. It can be calculated from the undermentioned equation:1/a?sf = -2log ( ( Ià µ/3.7D )For the passage part between turbulent flow in smooth pipes and turbulent flow in to the full unsmooth pipes, the clash factor degree Fahrenheit is calculated utilizing the Colebrook-White equation given above:1/a?sf = -2log ( ( Ià µ/3.7D ) + ( 2.51/Rea?sf ) )Moody DiagramThe Colebrook equation is an inexplicit equation and requires test and mistake method to cipher f.To provide the easiness for ciphering f scientists and research workers developed a gra phical method known as Moody diagram.The Moody chart or Moody diagramis a graph that relates the clash factor, Reynolds figure and comparative raggedness for to the full developed flow in a round pipe.In the diagram clash factor is plotted poetries Reynolds figure. The curves are plotted utilizing the experimental information. The Moody diagram represents the complete clash factor map for laminar and all disruptive parts of pipe flows. To utilize the Moody diagram for finding the clash factor degree Fahrenheit we foremost calculate the Reynolds figure R for the flow. Following, we find the location on the horizontal axis of Reynolds figure for the value of R and pull a perpendicular line that intersects with the appropriate comparative raggedness ( e/D ) curve. From this point of intersection on the ( e/D ) curve, we read the value of the clash factor degree Fahrenheit on the perpendicular axis on the left.Other Pressure Drop RelationsHazen-Williams EquationThe Hazen-Williams equation is normally used in the design of waterdistribution lines and in the computation of frictional force per unit area bead inrefined crude oil merchandises such as gasolene and Diesel. This methodinvolves the usage of the Hazen-Williams C-factor alternatively of pipe roughnessor liquid viscousness. The force per unit area bead computation utilizing the Hazen-Williams equation takes into history flow rate, pipe diameter, and specificgravi ty as follows:h=4.73L ( Q/C ) 1.852/D4.87Where, h=Head loss due to clash, foot L=Pipe length, foot D=Pipe internal diameter, foot Q=Flow rate, ft3/s C=Hazen-Williams coefficient or C-factor, dimensionless In customary grapevine units, the Hazen-Williams equation can berewritten as follows in English units:Q=0.1482 ( C ) ( D ) 2.63 ( Pm/Sg ) 0.54Where, Q=Flow rate, bbl/day D=Pipe internal diameter, in. Pm=Frictional force per unit area bead, psi/mile Sg=Liquid specific gravitation Another signifier of Hazen-Williams equation, when the flow rate is in gal/ min and caput loss is measured in pess of liquid per thousand pess of pipe is as follows:GPM=6.7547A-10-3 ( C ) ( D ) 2.63 ( HL ) 0.54Where, GPM=Flow rate, gal/min HL=Friction loss, foot of liquid per 1000 foot of pipe In SI units, the Hazen-Williams equation is as follows:Q=9.0379A-10-8 ( C ) ( D ) 2.63 ( Pkm/Sg ) 0.54Where, Q=Flow rate, m3/hr D=Pipe internal diameter, millimeter Pkm=Frictional force per unit area bead, kPa/km Sg=Liquid specific gravitationShell-MIT EquationThe Shell-MIT equation, sometimes called the MIT equation, is used in the computation of force per unit area bead in heavy petroleum oil and heated liquid grapevines. Using this method, a modified Reynolds figure Rm iscalculated foremost from the Reynolds figure as follows:R=92.24 ( Q ) / ( DI? )Rm=R/ ( 7742 )Where, R=Reynolds figure, dimensionless Rm=Modified Reynolds figure, dimensionless Q=Flow rate, bbl/day D=Pipe internal diameter, in. I?=Kinematic viscousness, Central Time Than depending on the flow ( laminal or turbulent ) , the clash factor is calculated from one of the undermentioned equations:f=0.00207/Rm ( laminal flow )f=0.0018+0.00662 ( 1/Rm ) 0.355 ( disruptive flow )Finally, the force per unit area bead due to clash is calculated utilizing theequationPm=0.241 ( f SgQ2 ) /D5Where, Pm=Frictional force per unit area bead, psi/mile f=Friction factor, dimensionless Sg=Liquid specific gravitation Q=Flow rate, bbl/day D=Pipe internal diameter, in. In SI units the MIT equation is expressed as follows:Pm=6.2191A-1010 ( f SgQ2 ) /D5Where, Pm=Frictional force per unit area bead, kPa/km f=Friction factor, dimensionless Sg=Liquid specific gravitation Q=Flow rate, m3/hr D=Pipe internal diameter, millimeter
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