Wednesday, August 26, 2020
Diseases among Elderly People Essay Example | Topics and Well Written Essays - 2000 words
Maladies among Elderly People - Essay Example thromboxane A2 that advances a course of occasions driving at last to cluster arrangement. Expanded homocysteine levels influence the inward covering of the blood vessel divider, and consequently have since quite a while ago been embroiled in the causation of apoplexy (Scott, J. what's more, Weir, D., 1996). In actuality, expanded homocysetine levels related with disorder of homocysteinuria are recognized to be a reason for intravascular apoplexy. It has been seen that plasma homocysteine is ordinarily changed over to methionine co-figured by folic corrosive relates in the body. At the point when this response is debilitated because of lack of cobalamine; since cobalamine controls folate digestion, it is unhinged prompting raised homocysteine levels (Mayer, E.L., Jacobsen, D.W., and Robinson, K., 1996). High plasma homocysteine, hence, will incline to expanded apoplexy, despite the fact that it isn't yet known regardless of whether hyperhomocysteinaemia due to folic corrosive inadequacy inclines to apoplexy or on the other hand modifies its reaction to treatment (Welch, G.N. also, Loscalzo, J., 1998). This proposition plans to examine the impact of folic corrosive on the old as far as danger of coronary vein sickness as applicable to avoidance of apoplexy in previous atherosclerotic heart ailment as far as rate of myocardial dead tissue (Bots, M.L. et al., 1999).Increasingly, medicinal services is centering towards anticipation of malady as opposed to rewarding it after the calamity occurs. Coronary vein malady showed by intense myocardial infraction is one of the most widely recognized judgments in created nations all through the world. The death pace of the ailment is 30% with over a large portion of the patients lapsing even before they can arrive at the clinic. Endurance from a heart...Research attendants will screen the clinical records and avoid patients who have a background marked by coronary heart maladies or patients who are consuming medications known to meddle with folic corrosive, or taking nutrient enhancements containing folic corrosive. Patients will be qualified for consideration whenever matured 65 years or more and if their clinical chronicles incorporate at least two of the accompanying conditions: diabetes, hypertension, hyperlipidemia, heftiness or smoking. Every single qualified individual will get a letter from the emergency clinic clarifying the examination, trailed by a call welcoming them to go to the principal visit and teaching them to quick from 12 PM the night prior to the visit. At the primary visit, all gauge estimations will be taken. Examination medical caretakers will take general data, for example, name, age, sex, telephone number, address, smoking history, conjugal status, financial components, and the names and telephone quantities of a few companions or family members who consistently realize how to arrive at the members. Medications history including headache medicine or different anticoagulants, antihypertensive, hostile to angina, and lipid-bringing down medications will be assessed. Study methods will be disclosed to all subjects. Subjects who are probably not going to finish follow-up because of plans to move or because of sickness prone to be deadly inside 4 years, or reluctant to partake will be barred from the investigation. Morals: All subjects will be clarified the examination convention, and a composed educated assent will
Saturday, August 22, 2020
International Aspirations of an Emerging Market Firm
Global Aspirations of an Emerging Market Firm Arcadia, a Turkish machine maker constrained by Turkeys biggest aggregate organization named Crock Group. From the earliest starting point, Recall items the greater part of Turkeys apparatuses, including climate control systems, dishwashers machines, cooking machines, and coolers. Be that as it may, since exchange hindrances declined in backtalk and backtalk, numerous contenders, for example, SSH, Hairier, General Electronic, Whirlpool, and Electrocute were compromising Recalls advertise share.In worldwide family machine industry, buyers will in general view home apparatuses as items, and regularly esteem low costs. A few candidates convey little benefit and have long life expectancy, utilizing computerized producing plants and minimal effort work Is just assistance in short run for the makers. So as to sell in premium cost and increment net revenues, some apparatus creators separate their item by Innovative, esteem included innovation an d highlights. In any case, development is expensive. Which caused most significant apparatus makers started to globalize (Cassavas, Knight, and Rosenberg, 2008, up. 277-278).Arcadia sees its best possibility In rising, quickly developing markets in Eastern Europe, Asia, and Latin America. Maybe Singapore could be one of those business sectors that permit Arcadia to be a lead player in the business as its points. Issues Economic in Singapore. Singapore financial is the principal issue that pulls in Arcadia to go into this developing business sector. Singapore GAP shows Gingersnap's purchasing power, which additionally influences Arsenic's items. Examination Economic in Singapore. As per Political Risk Yearbook: Singapore Country Report expressed; ââ¬Å"real GAP development for the second quarter of 2010 flooded to anIncreasable pace of almost 19%, on enrolling about 1 7% development in the main quarter, and that exhibition has now situated Singapore to be one of the quickest develop ing economies on the planet. â⬠(2010, p. 4). Singapore is one of the world's driving business communities and a significant goal for outside Investment. The primary explanation Is fiscal strength In Singapore Is acceptable. Second, the legitimate and administrative structure for the monetary division is straightforward and productive. The administration impact in the area is step by step being reduced.Third, hostile to defilement laws are solid and all around implemented. Additionally, remote and household Investors are dealt with similarly, and receptiveness to worldwide business cultivates intensity. With judicious and sound financial practices, the monetary part has endured the worldwide budgetary choppiness moderately well (Miller and Holmes, Para. 3). These ought to be adequate motivations to draw in Arcadia entering Singapore showcase. Issues Singapore Consumer Lifestyle. The second Issue that Recall need to know before working together in Singapore Is customer lifestyle .In request to know which items fitting to purchaser way of life in Singapore, Arcadia ought to be promoted accurately; progressing research in Singapore shopper way of life will help Arcadia arriving at their objective. Examination Singapore Consumer Lifestyle. As indicated by Global Marketing Information Database (GIMP), bring up that Singapore have their bustling way of life. They invest more energy in working, and investing less time in other thing else. As Gingersnaps become busier, the interest for accommodation has been on the ascent. Subsequently, the family unit apparatuses should deals something that assist Singapore with sparing time, for example, microwaves and freezers.As Gingersnaps laborers possess less energy for staple bouncing, having a cooler will assist them with purchasing more food. In like manner, microwaves will be extraordinary assistance to spare time in cooking for Singapore occupied specialist. In addition, Singapore is very receptive to high-innovation w ays of life, and innovation based items and administrations are amazingly famous. Then again, over the transient the monetary downturn will drive numerous buyers to be considerably more observing, and they will look hard for the best arrangements (GIMP, 2011, Para. 1-13). Business chances in Singapore.The last issue that Arcadia need to concentrate cautiously is consideration hazards in Singapore, including nation dangers or political dangers, multifaceted dangers, business dangers, and money dangers. In spite of the fact that Singapore has lower pace of debasement than other Asian nations and its Singapore Dollar (SAG) is very solid, there is business chances that should be thought of. Examination Commercial dangers in Singapore. Despite the fact that the Business Monitor International referenced that the Singapore Dollar (SAG) is sheltered, there are business chances in Singapore.From Smog's data, Arcadia may adjust its items, costs, and advancements so as to limit business danger s while working together in Singapore. What's more, there are a few contenders who as of now have specialties in Singapore should apparatuses piece of the pie, for example, LEG Electronics, Panasonic, Samsung, and Careful. So as to contend with those solid contenders, Arcadia could apply its bit of leeway, which is its information on the most proficient method to create items for lower-salary nations. ââ¬Å"It works 11 assembling plants in Turkey, Romania, Russia and China.Arcadia is an individual from the Koch Group of organizations, which holds a larger part stake in the organization. â⬠(Denominator, 2010, p. 50). Every one of those assembling plants permit Arcadia to deliver apparatuses less lavishly than certain contenders. The retailers in Singapore are likewise imperative to Arcadias business. The primary retail chains selling home apparatuses in Singapore are Harvey Norman, Best Dense, Courts and Gain City. Huge retail establishments, for example, Tasmania and Siesta a dditionally convey an assortment of significant brands of home appliances.Conclusion Arcadia ought to hope to be better in developing business sector, for example, Singapore since this area offers great chance to family unit apparatus organizations. Singapore has solid situation in financial and consistently development in family unit tenants. Paradise ought to be pulled in by shopper request by family units. So as to expand organization execution, Arcadia could consider Singapore buyer way of life and adjusts its items to fulfill Gingersnap's needs. Recover has solid circulation coordinate with near 4,500 sellers in Turkey and 366 on board.
Wednesday, August 19, 2020
Using Gender Neutral Language in Your Papers
Using Gender Neutral Language in Your Papers (0) Recently, the use of gender-neutral languageâ"also known as gender-inclusive languageâ"has become a trending topic, and its something to consider when writing your academic papers and essays. Well walk you through the various gender-neutral options, looking at when they might be most appropriate. We will be using MLA style parenthetical citations in this article to help indicate where certain information came from. Hereâs a page in case you need help making your own in text citations. How is This Different From What We Do Now? Many of us are used to binaryâ"gender female or maleâ"use gendered words like he/she, him/her, boy/girl, man/woman, and so forth. However, non-binary gender is viewed as more inclusive and allows for different types of gender identities that are not simply female or male. Complimenting non-binary gender is gender-neutral language, which addresses everyone, no matter their gender. For example: He opened the umbrella. Only talks about males. They opened the umbrella. Could be talking about anyone. Why is it Important? In a 2016 study published in the American Journal of Public Health, it was estimated that nearly 1 million adults in the United States are transgender (Meerwijik). In response to the needs of this population, universities across the country have begun to create gender-inclusive housing, and states like Washington and Oregon have begun offering citizens the option of marking their gender as a neutral âXâ (Cummings). Even Europe has taken notice. School gender advisers are normal in Sweden and are part of the national curriculum (Hebblethwaite). The UKâs leading charity campaigning for gender equality and womenâs rights, The Fawcett Society, calls for gender-neutral language to be used in all statutory, official and legal documentation. The charity has even released guidelines for its implementation, stating, âWe are aiming to reflect the population as a whole in which the numbers of women and men are more or less equalâ (Davis). Gender-neutral language is expected to increase inclusion and promote equality. When it comes to writing academic papers, impartiality is especially important, so bias towards either gender should be avoided. Great! How Do I Do It? Although it might take a little getting used to at first, there are actually lots of ways to make your academic writing as gender-neutral as possible. Lets take a look: Switch to Plural A sentence can often be made gender-neutral by switching the nouns and pronouns from singular to plural. For example: A student should use gender-neutral language in his papers. Students should use gender-neutral language in their papers. Use They, Their, Them and Themselves as a Singular Pronouns While traditionally used as a third-person plural pronouns, they, their, them and themselves are rising in popularity as a singular, ungendered pronoun option. The singular they is an important language tool as there is no other option apart from it, which is not accepted as an appropriate pronoun for a person. The scientist cant show bias. He has to remain impartial. The scientist cant show bias. They have to remain impartial. or Every student is expected to be at his desk on time. Every student is expected to be at their desk on time. Combine Genders Those wanting to play it very safe grammatically might choose to use he or she or s/he, or similar, to ensure both genders are included equally. The issue with this is that it can be jarring to read if repeated too often. For example: The winner of the race will take his or her place on the podium. He or she will then be presented with a medal, and details of his or her fastest time will be displayed on the big screen. Switch Between Genders A similar but less jarring option is to simply alternate between genders through your work. However, you should avoid doing this within a short section of text as the reader might assume that youre now talking about someone different when, in fact, the subject is the same. For example: He decided to conduct an impartial study into explosive chemical reactions. First she needed to research chemicals with explosive tendencies. Use Gender-neutral Nouns Gendered nouns have fallen out of favor in recent years, as theyre often considered to perpetuate stereotypes. As a result, more gender-neutral alternatives have developed (âThe Language of Genderâ). For example: Policeman police officer Mankind humans, humanity Freshman first-year student Chairman chair, chairperson Mailman mail carrier, postal worker Steward/stewardess attendant Congressman congressional representative Of course, some nouns are already gender-neutral (i.e. teacher, scientist, reader, poet, artist, writer etc.). These can be a good option, although you might still find yourself searching for a gender-neutral pronoun down the line. Use Proper Nouns If you know a persons name, you can use variations of that without substituting for a pronoun. This can also be useful if youre unsure of their gender (âGender-Inclusive Languageâ). For example: Dr Sam Watson gave a lecture on physiology. During the presentation, Watson discussed the main organ systems of the human body. Donât Refer to Gender Unless Necessary If the gender of a person goes against the expectation, it might be tempting to mention it. However, this can actually reinforce the stereotype. For example: You might say, I was seen by a male nurse. But youre unlikely to say, I was seen by a female nurse. This is because, often unconsciously, we tend to assume that a nurse will be female. If gender isnât relevant to the sentence, leave it out. Use Spivak pronouns Spivak pronouns are a modern variation designed to be gender-neutral (âThe Need for a Gender-Neutral Pronounâ). For example: She/He E They Ey Him/Her/Them Em His/Her Es Their Eir Theirs Eirs Himself/Herself/Themself Eirself/Emself There are several different variations on gender-neutral pronouns currently vying for popularity, including per, ve, xe and ze/zie (as alternatives to he/she). Check with your teacher before using these in your paper. The Formal One One is a gender-neutral pronoun, however its deemed to be very formal and is rarely used in common speech/language. It can also quickly become repetitive in use. For example: One should go to the library where one can conduct research for ones paper. Ask for Advice As youve read, there are numerous options for using gender-neutral language in your academic essays and papers. If youre feeling confused, your lecturer or student advisor should be able to help. Why not mention it when asking which type of citation you should useâ"MLA, APA format or another style? If you need help creating citations, an APA reference page, or have general questions about formatting, has a useful citing toolkit including formatting guides and a citation generator. Works Cited Below was created using âs citation generator. If you need help with citations, works cited format, or have general citing questions, visit our guides page. Cummings, William. âWhen Asked Their Sex, Some Are Going With Option âX.â USA Today, 21 June 2017, www.usatoday.com/story/news/2017/06/21/third-gender-option-non-binary/359260001/. Davis, A E L. âGender Neutral Language In Statutory, Official and Legal Documents.â Fawcett Society, 3 August 2017, www.fawcettsociety.org.uk/gender-neutral-language-in-statutory-official-and-legal-documents. âGender-Inclusive Language.â The Writing Center, University of North Carolina Chapel Hill, writingcenter.unc.edu/tips-and-tools/gender-inclusive-language/. Hebblethwaite, Cordelia. âSwedenâs âGender-Neutralâ Pre-School.â BBC News, 8 July 2011, www.bbc.com/news/world-europe-14038419. âThe Language of Gender.â English Oxford Living Dictionaries, Oxford University Press, en.oxforddictionaries.com/writing-help/the-language-of-gender. Meerwijk, Esther L., and Jae M. Sevelius. âTransgender Population Size in the United States: A Meta-Regression of Population-Based Probability Samples.â American Journal of Public Health, vol. 107, no. 2, February 2017, pp. e1-e8. NCBI, doi: 10.2105/AJPH.2016.303578. âThe Need For A Gender-Neutral Pronoun.â Gender Neutral Pronoun Blog, 2010, genderneutralpronoun.wordpress.com/. Roberts, Rachel. âHull University Threatens To Mark Down Students Who Dont Use Gender Neutral Pronouns.â Independent, 3 April 2017, www.independent.co.uk/news/uk/home-news/hull-university-gender-neutral-pronouns-students-mark-down-not-use-a7664581.html.
Sunday, May 24, 2020
Wednesday, May 13, 2020
Wednesday, May 6, 2020
Incentive as a Component of Salesman Compensation Structure Free Essays
Incentives as a Component of Salesman Compensation Structure By Mohit Pandey 11DM-187 Sales Management-Section D What are Incentives? It is defined as a type of additional remuneration either in cash or kind given to an employee as a means of increasing output or as a motivational influence. Why do we need to give incentives? Firstly incentives work as psychological stimulant for a person to perform better. Incentives act like the pot of gold at the end of the rainbow. We will write a custom essay sample on Incentive as a Component of Salesman Compensation Structure or any similar topic only for you Order Now Secondly, the turnover rate of a salesperson is very high and also the cost of replacing a salesperson is also quite high, approximately around $40-50k. Thus to retain the best talent in the company we need to provide adequate incentives to the sales force. The salesperson spends most of his time out in the field and this makes it quite difficult to monitor him. Incentives act as an automatic monitor to make sure that the salesperson is working towards achieving his sales targets. What are the types of Incentives given to a Salesman? The salesman compensation structure is divided into two parts: Fixed Salary and Variable Salary. In a totally risk-free situation there would be no fixed salary, the salesman compensation would consist only of 100% Commissions. But since the market is never 100% risk-free and also because of longer order-cycles the compensation plan has some amount as Fixed Salary. The types of Incentives are: * Cash: This is most widely given type of incentive. Everyone knows that the major lure in a salesmanââ¬â¢s job is the opportunity to earn a lot of money and cash incentives are a major component. Cash incentives can be segregated into two sub-types: * Commissions: It is directly to the sales volume. Example: 5% commission on every T. V sold. It can either be calculated on the profit margin or on the price of the product. Commission are short-term incentives and lead to increase in the sales effort put in by the salesman. * Bonus: It is given if the salesman achieves a desired no. of sales known as sales target/quota. It is calculated on the base pay. It is a medium/long term incentive depending on whether it is given quarterly or annually. * Non-Cash: These are generally not counted as a part of the compensation plan. They are given to motivate the salesman and based on performance in the long term. Non-cash incentives include: * Gift Cards * Merchandise Travel What parameters are used to determine incentives? Generally the ratio of incentives as a percentage of the total compensation decreases as you go up the hierarchical structure. At a salesman level it can go up to 100% of his base pay while at the manager level it can vary from 40-60%. The parameters generally used to determine incentives are: * Total revenue * New revenue * Gross profit * Price realization * Units sold * Select product sales * New products * Outdated products * New accounts * Retained accounts * Account expansion Customer satisfaction * First order * Order volume * Contract commitment * Key sales objectives or milestones The parameters used should be aligned with the business strategy of the company. For e. g. If a company is launching a new product into the market through the existing sales force, then it doesnââ¬â¢t make sense for the company to not have the sales nos. of the new product sold as playing a part in deciding the incentive level of the salesman. Normally only few parameters should be selected so as to make the compensation plan clear to the salesman. The compensation plan should be as clear to the salesman as possible so that he can easily calculate how much he can earn in that year. The sales target being set should be realistic and achievable. Ideally sales targets should be set after a discussion between the management and the salesperson both. Ideally incentives should not have an upper-cap, this deters the high performers. Even if a company has to set an upper-cap it should be higher than the maximum realistic possible of a salesperson. A few key points that should be kept in mind while setting the parameters for deciding incentives are: * The current market situation (growth or recession). * The product type (B2C or B2B) * The sales order cycle (long or short) * The business strategy ( Increase market penetration or may increase sales of a high margin product or launch of a new product) How much incentive to offer and to whom? The percentage amount of incentive offered to the sales force should not be equal across the board. The high performers must be rewarded for their performance, while the low performers need to be encouraged to perform better. The better the performance the higher should be the incentive level. Also in case of team selling the incentive has to be distributed proportionately amongst the team. It should not be the case wherein the laggards piggyback on the star performers and get the same level of incentive. Additionally a proper framework has to be devised on a company-to-company basis to decide the distribution of incentive for a product sold amongst the team members so as to control costs and avoid giving multiple incentives for the same product to multiple persons involved in the sale. The incentives offered should be mix of both short and long term incentives i. e. commissions, bonus, non-cash rewards, etc. This is to ensure that the motivation level of the salesperson is up throughout the year and does not peak at certain periods. The level of incentive payout should be adequate neither too little so as to discourage the salesperson nor too much as it will increase costs and lower profits and also lower the morale of the non-sales staff. Conclusion: Hence we can conclude that incentives as a component of a salesman compensation structure is highly important. Following is a generic framework which can be used to decide an incentive plan: * The plan should be clear and well understood by the sales force. * Decide the level of incentive i. e. the percentage to be given and how much and to whom, based on the performance level. * Determine criteria for giving incentives based on a proper analysis of the factors stated above in the report. Keep as less parameters as possible. Keep the sales target level competitive yet achievable. * The level of incentive should be adequate i. e. comparable to the competitor but neither too low nor too high. * Determine the periodicity of incentive payout. * The incentive payout should be based at proper intervals during the year. Sales contests and non-cash rewards are a good way to achieve this. * The plan should be flexible. Ideally make multiple plans and offer it to the sales person so that he ca n choose which one suits him best. Bibliography: Restoring Balance to Sales Compensation Head, Robert G. Sales and Marketing Management144. 9 (Aug 1992): 48. Readersââ¬â¢ report: How we use incentives Donath, Bob. Sales and Marketing Management145. 6 (Jun 1993): 34. Talking money Anonymous. Sales and Marketing Management149. 12 (Nov 1997): 64-70. May the Sales Force Be with You Ladd, Scott. HRMagazine55. 9 (Sep 2010): 105-107. Reframing salesforce compensation systems: An agency theory-based performance management perspective Bartol, Kathryn M. The Journal of Personal Selling ; Sales Management19. 3 (Summer 1999): 1-16. How to cite Incentive as a Component of Salesman Compensation Structure, Essay examples
Tuesday, May 5, 2020
Bruce Daw Consumerism Essay Example For Students
Bruce Daw Consumerism Essay What does Bruce daws poetry say about consumerism and its influence on modern day society? Consumerism is a significant feature of modern society and the poet Bruce Dawe is highly critical of its negative influence.Throughout his work, Dawe sarcastically attacks the way in which people have been manipulated by the lore and appeal of consumerism. Dawe alerts us to the fact that we have sacrificed our ethics and values in search os a more forfilled and enriched life which is tupified by an obssession with consumer products. he warns us : remember man you are dust and to dust you shall return. Dawes warning is clearly presented to us by his dipiction of characters who have been despoiled by money. and the items that it brings pretty soon he was old enouph to be like every other godless, money hungry, backstabbing miserable and so and so.. not only do we lose our innocence and he really was lucky because it didnt mean anything to him then but also we ourselves become consumer products in this consumer world. Dawe exaggerates and distarts the techniques that are used in the production of commercials. .
Tuesday, March 31, 2020
Khor Fakkan City
Table of Contents Introduction History of Khor Fakkan Tourism of the Khor Fakkan Development of the city List of References Introduction The geographical location of Khor fakkan is in the Emirate of Fujairah. It is situated on the east coast of the Unites Arab Emirates on the Gulf of Oman, but it is actually a remote commune, which is the part of the Emirate of Sharjah. It is particularly a shallow port with oil refineries (Luxury Hotels U.A. Emirates, 2009, Para 1).Advertising We will write a custom report sample on Khor Fakkan City specifically for you for only $16.05 $11/page Learn More Khorfakkan, one of the most prominent harbors of the UAE, has an extensive history of human arrangement. A research team from the Sharjah Archaeological Museum has found 34 graves and a settlement that seems to be from the period of the early-mid second millennium BC. These are collected on rock protrusions ignoring the harbor (A Walk Through Time, Para 1). History of Khor Fakkan During 1950 a Venetian jeweler Gasparo Balbi observed ââ¬ËChorfââ¬â¢ in some places on the east coast of the UAE, which was called Khor fakkan later. A fort was built by Portuguese at Khor Fakkan but during 1666 it was reduced to rubble. The logbook of the Dutch vessel called as Meerkat talks about this fort and another fort. The book also discusses about ââ¬ËGorfacanââ¬â¢, a place situated on a small bay, which consisted of almost two hundred small houses made of date branches in close proximity to the beach. There is the description about a triangular Portuguese fortress on the Northern side, whose bleak ruins can be observed. It also describes about another fortress on the Southern side of the bay, which has no garrison or artillery on it. This fort is also in ruins. This place has an attractive valley with large number of date trees and fig trees. The wines of melon and watermelon can also be seen there. This vegetation has lots of fresh water wells a lso which are used for irrigation (A Walk Through Time, Para 2). An Omani Sheikh Mohammad Sohari who was the commander of the Persian navy invaded Khor Fakkan. This can be considered the main reason for the for the ruin condition of the forts of Khor Fakkan. Sheikh Mohammad Sohari mainly invaded the East Coast in 1623, which is now the Emirates. He faced a Portuguese counter attack and pulled out the Portuguese forts, which includes Khor Fakkan. When the Persians were pushed out, the Portuguese commander Ruy Freire asked for the loyalty of people of Khor Fakkan for the Portuguese crown. He also settled a Portuguese custom office. In 1737 after expelling Portuguese from Arabia, the Persians again attacked Khor Fakkan that happened with the help of the Dutch during their involvement in the Omani Civil War (A Walk Through Time, Para 3). According to a Carsten Niebuhr, a German Traveler during 1765 Khor Fakkan belonged to a Sheikh of the Qawasim (A Walk Through Time, Para 3).Advertising Looking for report on geography? Let's see if we can help you! Get your first paper with 15% OFF Learn More Archaeology of the Khor Fakkan: in the mountains of Khor Fakkan Rifaisa dam is a place of worth watching. It is said that this dam is built over a village and when the water is at a standstill, one can see the tops of the old houses of the village (Luxury Hotels U.A. Emirates, 2009, Para 7). Tourism of the Khor Fakkan Khor Fakkan is a very famous tourism spot. It has big mountain ranges and attractive beaches. It has a very famous hotel named Oceanic. It has coral projections, which is good for diving and snorkeling. Here the tourism is little affected due to the ban on alcohol in Sharjah. There are different kinds of souq like fish, vegetable and fruit, which are situated at the Southern end of the corniche. Al Wurrayah falls is an attractive place to see that is accessible by four-wheel drive that is at the north of the Oceanic hotel and 4.5 km away from it (L uxury Hotels U.A. Emirates, 2009, Para 1). While approaching Khor Fakkan one passes through the first social housing Dhadnah and the Sandy Beach Motel, then a mosque can be seen that is an adjacent cemetery from the period of the Islamization decline, then one reaches Bidyah where a historical mosque is situated. It is thirty-six km away from the South of Diba that is the wide bay of the two pine trees. It is Sharjahââ¬â¢s historic harbor that has been once the hub of traffic Dhau to Africa and Asia during 16th and 17th century. Basically the Oceanic hotel is the entrance of the city. The hotel is the summer palace of the Emir on the hill. An ancient watchtower here reminds the rule of Portuguese over the city. A belt of broad green beach goes from the hotel to the place where one can see new and architecturally beautiful souq. Many local families enjoy its wide and white beaches and spend their weekend over here. The Oceanic hotel has its own diving station and gives a panoramic view from the rooms and restaurants of the hotel (Survival Kit for Khor Fakkan, 2009, Para 1). While visiting Khor Fakkan it comes to our mind what to eat there and what to see there. There are many restaurants in Khor Fakkan. Shabab Al Khor, Tagg Khor Fakkan, Khor Fakkan Cafà ©. One can find varieties of food in Shabab Al Khor like machboos, groos, kabees, chicken biryani, eggs, meat, fish, Harriees, seafood, yogurt, rice, pasta, butter, fruit, vegetable, bread, salad, honey, cheese and sweet. Many kinds of drinks are also available here like tea, coffee, milk, orange juice, fruit juice and grape juice (Khor Fakkan City, Nice places, 2005, Para 2).Advertising We will write a custom report sample on Khor Fakkan City specifically for you for only $16.05 $11/page Learn More While visiting Khor Fakkan, one can see many places there as mountains, parks, beaches, remains of fort and old buildings. Rifaisa dam is like a water reserve for the town, which con trols the flow of floodwater (Khor Fakkan City, Nice places, 2005, Para 3). Development of the city In Khor Fakkan, Sharjah Electricity and Water Authority (SEWA) has finished ninety percent of the work on a gas station. Thais project has been developed in five-kilometer area and has completed its first phase to provide natural gas to the Kalba city people in the Eastern region (Sewa completes 90% gas work in Khor Fakkan City, 2009, Para 1-3). The project has to be inaugurated officially to supply natural gas to the consumers of Kalba city. According to Ibrahim Rashid, SEWAââ¬â¢s Deputy Director General, the natural gas project in Sharjah has been very successful and approximately 132000 consumers at industrial, residential and commercial levels will be benefited with this project. According to him the gas installations network in the city has been expanded in more than 1500 km (Sewa completes 90% gas work in Khor Fakkan City, 2009, Para 4). List of References A Walk Through Time , UAE Interact. Khor Fakkan City, Nice Places, 2005. Sewa completes 90% gas work in Khor Fakkan City, 2009. Survival Kit for Khor Fakkan, 2009. Tripwolf.Advertising Looking for report on geography? Let's see if we can help you! Get your first paper with 15% OFF Learn More This report on Khor Fakkan City was written and submitted by user Jaycee Russell to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.
Saturday, March 7, 2020
Tropic of Cancer - Overview and Geography
Tropic of Cancer - Overview and Geography The Tropic of Cancer is a line of latitude circling the Earth at approximately 23.5Ã ° north of the equator. It is the northernmost point on Earth where the suns rays can appear directly overhead at local noon. It is also one of the five major degree measures or circles of latitude dividing the Earth (the others are the Tropic of Capricorn, the equator, the Arctic Circle and the Antarctic Circle). The Tropic of Cancer is significant to Earths geography because, in addition to being the northernmost point where the suns rays are directly overhead, it also marks the northern boundary of tropics, which is the region that extends from the equator north to the Tropic of Cancer and south to the Tropic of Capricorn. Some of the Earths largest countries and/or cities are at or near the Tropic of Cancer. For example, the line passes through United States state of Hawaii, portions of Central America, northern Africa, and the Sahara Desert and is near Kolkata, India. It should also be noted that because of the greater amount of land in the Northern Hemisphere, the Tropic of Cancer passes through more cities than the equivalent Tropic of Capricorn in the Southern Hemisphere. Naming of the Tropic of Cancer At the June or summer solstice (around June 21) when the Tropic of Cancer was named, the sun was pointed in the direction of the constellation Cancer, thus giving the new line of latitude the name the Tropic of Cancer. However, because this name was assigned over 2,000 years ago, the sun is no longer in the constellation Cancer. It is instead located in the constellation Taurus today. For most references though, it is easiest to understand the Tropic of Cancer with its latitudinal location of 23.5Ã °N. Significance of the Tropic of Cancer In addition to being used to divide the Earth into different parts for navigation and marking the northern boundary of the tropics, the Tropic of Cancer is also significant to the Earths amount of solar insolation and the creation of seasons. Solar insolation is the amount of incoming solar radiation on the Earth. It varies over the Earths surface based on the amount of direct sunlight hitting the equator and tropics and spreads north or south from there. Solar insolation is most at the subsolar point (the point on Earth that is directly beneath the Sun and where the rays hit at 90 degrees to the surface) which migrates annually between the Tropics of Cancer and Capricorn because of the Earths axial tilt. When the subsolar point is at the Tropic of Cancer, it is during the June solstice and this is when the northern hemisphere receives the most solar insolation. During the June solstice, because the amount of solar insolation is greatest at the Tropic of Cancer, the areas north of the tropic in the northern hemisphere also receive the most solar energy which keeps it warmest and creates summer. In addition, this is also when the areas at latitudes higher than the Arctic Circle receive 24 hours of daylight and no darkness. By contrast, the Antarctic Circle receives 24 hours of darkness and lower latitudes have their winter season because of low solar insolation, less solar energy and lower temperatures. Click here to see a simple map showing the location of the Tropic of Cancer. Reference Wikipedia. (13 June 2010). Tropic of Cancer - Wikipedia, the Free Encyclopedia. Retrieved from: http://en.wikipedia.org/wiki/Tropic_of_Cancer
Thursday, February 20, 2020
Management And Organization In The Retail Industry Assignment
Management And Organization In The Retail Industry - Assignment Example Wal-Mart is one of the largest retail companies in the country has recorded the highest profits in the past year. Its founder, Sam Walton opened his first Wal-Mart store in the year 1962 (Archtmeyer, 2003). Walton was a major influence in the retail industry when it comes to using technology, for example, Wal-Mart was one of the first retail stores to introduce bar codes, which automated inventory control. Wal-Mart was also one of the first companies to introduce satellite inventory tracking systems.Companies in this industry use different organizational structures, but the divisional structure is the most common (Galbraith, 2002). The divisional structure is made up of different divisions spread out over a geographical area but under one corporation. The divisional organizational structure is also seen in some of the other retail companies like Nordstrom and Amazon. Nordstrom and Amazon are two of the major competitors in the retail marketing industry, rated as some of the top compa nies in the industry. Small-scale retailing companies use the simple structure as their organizational structure. The simple structure is a design that is less formal, lowly departmentalized and has a centralized authority. In the retail marketing industry, sales and marketing personnel make up the majority of the workforce in the retail industry. This is because the main purpose of a retail company is to sell goods and services to consumers, and the only way to increase revenue is to have more sales.
Tuesday, February 4, 2020
How has social media influenced Apple market Dissertation
How has social media influenced Apple market - Dissertation Example The emergence of the social media platforms has led to a dynamic shift in how people interact and build a communicative space for communication and information. The Internet is the basic infrastructure on which the social media platforms are based. In the initial stages, the internet guaranteed equal distribution and access and over time it has been further developed that enables data to be transported through ââ¬Ëtethered applicationsââ¬â¢, or ââ¬Ëapplied servicesââ¬â¢ such as Appleââ¬â¢s iTunes to download songs or Facebook to channel social contacts (Dijck, 2012). While this may have been possible due to technological advancements, it has now expanded into the realm of the social and cultural spheres to the extent that these social platforms affect interactions and reciprocal relationships. Social media has been described as an online platform that facilitates content sharing, collaboration and interactions (Coyle, Smith and Platt, 2012). It is a platform where participants can freely send, receive and process content for use by others (Aula, 2010). Social networking applications also enable creating and managing digital expression of peopleââ¬â¢s relationship or links. As the social media has enhanced social interactions and relationships, it is also extensively been used by marketers as one of the platforms for marketing and promotion. As such it is used by companies to engage the customers. Companies such as Starbucks and CNN use it to build brand awareness and brand equity (Palmer & Koenig-Lewis, 2009). The number of Facebook users and Tweets has reached such a state that consumers and their virtual networks drive conversation, thereby posing challenge for businesses. Companies have become engaged and try to keep their customers engaged through the social media because they believe that if they do not do so, ââ¬Å"they will be out of touchâ⬠(Baird & Parasnis, 2011). While many companies have started using the social media platform it is not known how many actually engage and how many have derived benefits from this platform. It is not possible for this study to evaluate the performance of several companies through the social media. Apple Inc is in the field of computer hardware, software and consumer electronics. Their electronic consumer products such as the iPhone, iPad and iPod have particularly changed the way people use the social media. Apple is one of the most valuable brands in the world and has been generating billion dollar revenue figures for over a decade (Statista, 2013). This study would focus
Monday, January 27, 2020
The history of robotics
The history of robotics Abstract: The project gives a brief introduction to the history of robotics while going on to explain the various types of robots that are built and their classification. A detailed description of the various mechanical platforms and driving mechanisms has been provided. The commonly used robotic designs have also been looked into and their characteristics have been explained. Finally, the fabrication process of the robotic gripper has been studied and explained. Grippers are key components in robotized assembly system. 1. Introduction The design and construction of highly dexterous robot hands has been a major research and development objective for at least the past two decades. Many of the above robot hands have the general objective of achieving a high degree of dexterity in a wide variety of situations, and this generality in their objective may sometimes lessen their effectiveness in specific classes of applications. This project focuses on the development of a universal robot gripper. The gripper utilizes a2minimal amount of hardware, and can be employed in a wide variety of pick-and-place applications with minimal changes to the mechanical and control program configurations. The gripper is the mechanical interface between the robot and its environment. The robot performs the pick-and-place functions needed for assembly tasks. As with other peripheral equipment, grippers should have sufficient versatility to deal with the variety of parts an assembly robot has to handle. This project focuses on strategies for fabrication of an effective gripping device. The main section of the project covers the introduction for fabrication of grippers. 2. History Machines and mechanization are the ancestors of todays robots. The ancients started with things like water clocks and irrigation equipment. Later, windmills and water wheels turned gears and equipment to help produce a product. These ancient machines did tasks with or without human help. Industrialization made use of heavy mechanization to mass produce merchandise. In the 20th century, machines took some form of intelligence. They were able to work independently, solve problems and execute solutions. Cybernetics involved improving robot intelligence. Today, robots explore sea floors, wander inside caves, explore and study other planets and build cars. Leonardo da Vinci created many robot-like sketches and designs in the 1500s. The word robot first appeared in print in the 1920 play R.U.R. (Rossums Universal Robots) by Karl Kapek, a Czechoslovakian playwright. Robota is Czechoslovakian for worker or serf (peasant). Typical of early science fiction, the robots take over and exterminate the human race. 1954: The first programmable robot is designed by George Devol, who coins the term Universal Automation. He later shortens this to Unimation, which becomes the name of the first robot company (1962). Isaac Asimov popularized the term robotics through many science-fiction novels and short stories. Asimov is a visionary who envisioned in the 1930s the positronic brain for controlling robots; this pre-dated digital computers by a couple of decades. Unlike earlier robots in science fiction, robots do not threaten humans since Asimov invented the three laws of robotics: A robot may not harm a human or, through inaction, allow a human to come to harm. A robot must obey the orders given by human beings, except when such orders conflict with the First Law. A robot must protect its own existence as long as it does not conflict with the First or Second Laws. Joseph Engleberger and George Devoe were the fathers of industrial robots. Their company, Unimation, built the first industrial robot, the PUMA (Programmable Universal Manipulator Arm, a later version shown below), in 1961. 1980s: The robot industry enters a phase of rapid growth. Many institutions introduce programs and courses in robotics. Robotics courses are spread across mechanical engineering, electrical engineering, and computer science departments. 3. Types and classification of robots. Industrial robots are available commercially in a wide range of sizes, shapes, and configurations. They are designed and fabricated with different design configurations and a different number of axes or degrees of freedom. These factors of a robots design influence its working envelope 4. Common Robot Designs 4.1. Cartesian Robots which have three linear (prismatic joints P, as opposed to rotational R joints) axes of movement (X, Y, Z). Used for pick and place tasks and to move heavy loads. They can trace out rectangular volumes in 3D space. 4.2. Cylindrical The positions of these robots are controlled by a height, an angle, and a radius (that is, two P joints and one R joint). These robots are commonly used in assembly tasks and can trace out concentric cylinders in 3D space. 4.3. Spherical Spherical robots have two rotational R axes and one translational P (radius) axis. The robots end-effectors can trace out concentric spheres in 3D space. 4.4. Articulated The positions of articulated robots are controlled by three angles, via R joints. These robots resemble the human arm (they are anthropomorphic). They are the most versatile robots, but also the most difficult to program. 4.5 SCARA (Selective Compliance Articulated Robot Arm) SCARA robots are a blend of the articulated and cylindrical robots, providing the benefits of each. The robot arm unit can move up and down, and at an angle around the axis of the cylinder just as in a cylindrical robot, but the arm itself is jointed like a revolute coordinate robot to allow precise and rapid positioning. The robot consists of three R and one P joints; an example is shown below. We will mostly deal with robotic arms; some other interesting types of robots are mobile robots, humanoid robots, and parallel robots. 4.6. Mobile robots Mobile robots have wheels, legs, or other means to navigate around the workspace under control. Mobile robots are applied as hospital helpmates and lawn mowers, among other possibilities. These robots require good sensors to see the workspace, avoid collisions, and get the job done. 4.7. Parallel robots Most of the robots discussed so far are serial robots, where joints and links are constructed in a serial fashion from the base, with one path leading out to the end-effector. In contrast, parallel robots have many legs with active and passive joints and links, supporting the load in parallel. Parallel robots can handle higher loads with greater accuracy, higher speeds, and lighter robot weight; however, a major drawback is that the workspace of parallel robots is severely restricted compared to equivalent serial robots. Parallel robots are used in expensive flight simulators, as machining tools, and can be used for high-accuracy, high-repeatability, high-precision robotic surgery. 5. Mechanical platforms the hardware base A robot consists of two main parts: the robot body and some form of artificial intelligence (AI) system. Many different body parts can be called a robot. Articulated arms are used in welding and painting; gantry and conveyor systems move parts in factories; and giant robotic machines move earth deep inside mines. One of the most interesting aspects of robots in general is their behavior, which requires a form of intelligence. The simplest behavior of a robot is locomotion. Typically, wheels are used as the underlying mechanism to make a robot move from one point to the next. And some force such as electricity is required to make the wheels turn under command. 5.1. Motors A variety of electric motors provide power to robots, allowing them to move material, parts, tools, or specialized devices with various programmed motions. The efficiency rating of a motor describes how much of the electricity consumed is converted to mechanical energy. Lets take a look at some of the mechanical devices that are currently being used in modern robotics technology. DC motor: Permanent-magnet, direct-current (PMDC) motors require only two leads, and use an arrangement of fixed- and electro-magnets (stator and rotor) and switches. These form a commutator to create motion through a spinning magnetic field. AC motor: AC motors cycle the power at the input-leads, to continuously move the field. Given a signal, AC and DC motors perform their action to the best of their ability. Stepper motor: Stepper motors are like a brushless DC or AC motor. They move the rotor by applying power to different magnets in the motor in sequence (stepped). Steppers are designed for fine control and will not only spin on command, but can spin at any number of steps-per-second (up to their maximum speed). Servomotors: Servomotors are closed-loop devices. Given a signal, they adjust themselves until they match the signal. Servos are used in radio control airplanes and cars. They are simple DC motors with gearing and a feedback control system. 5.2 Driving mechanisms Gears and chains: Gears and chains are mechanical platforms that provide a strong and accurate way to transmit rotary motion from one place to another, possibly changing it along the way. The speed change between two gears depends upon the number of teeth on each gear. When a powered gear goes through a full rotation, it pulls the chain by the number of teeth on that gear. Gears are most often used in transmissions to convert an electric motors or in this case the drive shafts high speed and low torque to a shafts requirements for low speed high torque. Gears essentially allow positive engagement between teeth so high forces can be transmitted while still undergoing essentially rolling contact. The basic law of gearing says that a common normal (the line of action) to the tooth profiles at their point of contact must in all positions of the contacting teeth; pass through a fixed point on the line-of-centers called the pitch point. As such any two curves or profiles engaging each other and satisfying the law of gearing are conjugate curves, and the relative rotation speed of the gears will be constant. A gear train is a set or system of gears arranged to transfer rotational torque from one part of a mechanical system to another. Gear trains consists Driving gears it is attached to the input shaft Driven gears or Motor gears it is attached to the output shaft Idler gears it is interposed between the driving and driven gear in order to maintain the direction of the output shaft the same as the input shaft or to increase the distance between the drive and driven gears. A compound gear train refers to two or more gears that are used to transmit motion. Alternatively pinion is the smaller of the two gears (typically on the motor) drives a gear on the output shaft. A gear or wheel is the larger of the two gears. Gears are generally used for one of four different reasons: To reverse the direction of rotation To increase or decrease the speed of rotation To move rotational motion to a different axis To keep the rotation of two axis synchronized Pulleys and belts: Pulleys and belts, two other types of mechanical platforms used in robots, work the same way as gears and chains. Pulleys are wheels with a groove around the edge, and belts are the rubber loops that fit in that groove. Gearboxes: A gearbox operates on the same principles as the gear and chain, without the chain. Gearboxes require closer tolerances, since instead of using a large loose chain to transfer force and adjust for misalignments, the gears mesh directly with each other. Examples of gearboxes can be found on the transmission in a car, the timing mechanism in a grandfather clock, and the paper-feed of your printer. Power supplies Power supplies are generally provided by two types of battery. Primary batteries are used once and then discarded; secondary batteries operate from a (mostly) reversible chemical reaction and can be recharged several times. Primary batteries have higher density and a lower self-discharge rate. Secondary (rechargeable) batteries have less energy than primary batteries, but can be recharged up to a thousand times depending on their chemistry and environment. Typically the first use of a rechargeable battery gives 4 hours of continuous operation in an application or robot. There are literally hundreds of types and styles of batteries available for use in robots. Batteries are categorized by their chemistry and size, and rated by their voltage and capacity. The voltage of a battery is determined by the chemistry of the cell, and the capacity by both the chemistry and size. 6. Degrees of freedom The term degree of freedom relates to locating or positioning of a body in space. A body in space has six degree of freedom since it can translate linearly along three mutually perpendicular axis and rotational movements about the same three axes. Three linear movements allow the body on the end effectors of the robot to move a desired position in space and three rotational movements allow the body to be oriented about that position. The term degree of movements relates to the number of axis in which the robot may move in one particular robot configuration. Regardless of the configuration of a robot, movement along each axis will result in either a rotational or a translational movement. The number of axes of movement (degrees of freedom) and their arrangement, along with their sequence of operation and structure, will permit movement of the robot to any point within its envelope. Robots have three arm movements (up-down, in-out, side-to-side). In addition, they can have as many as three additional wrist movements on the end of the robots arm: yaw (side to side), pitch (up and down), and rotational (clockwise and counterclockwise). 7. Mechanical design of the Gripper 7.1. General Design Description The mechanical design of the robotic gripper needed to address the required interaction between the robot and the environment in order to grasp and hold the object securely and to execute the operation. When objects to be grasped are of different shape and size the friction method is normally used whereby the part is restricted from moving by the friction present between the fingers and the object. In this way the fingers exert sufficient force to hold the part against gravity, acceleration and any other force that might arise during the holding portion of the work cycle. This is achieved through a mechanical design that incorporates multiple fingers and multiple joints per finger, through the installation of proximity and force sensors on the gripper, and through the employment of innovative and practical control system architecture for the gripper components. The gripper is installed on a standard six degree-of-freedom industrial robot, and the gripper and robot control programs are integrated in a manner that allows easy application of the gripper in an industrial pick-and-place operation. The gripper or the end effector constitutes the end of the kinematic chain of an industrial robot and makes possible the interactions with the work environment. Although universal grippers with wide clamping ranges can be used for varied object shapes, in many cases they must be adapted to specific work-pieces shapes. A robotic end effector is the hand of the robots arm. By attaching a tool to the robot flange (wrist), the robotic arm can then perform designated tasks. Examples of robotic end-effector include robotic grippers, robotic tool changers, robotic collision sensors etc. In many case, the robotic end effector requires additional power supplies to operate. It depends on the type of functions the end-effector perform, the popular one is the pneumatic, because it is easier to supply air to the end of a robot arm and. The only disadvantages of pneumatics are that it has a slightly lower power to weight ratio than hydraulics and it is not as controllable or easy to feed as electricity. For certain applications some degree of sensory feedback from the gripper is necessary. For examples, the insertion or gripping forces measurement, proximity sensor to detect the presence of objects between the jaws of the gripper, collision detection unit which attaches between the robot flange and the end effector so that if excessive force is applied to the tool the robot arm will stop. 7.2 Robot -End Effectors: End Effectors is the part that is connected to the last joint of a manipulator which generally handles objects, makes connection to other machines or performs the required tasks. Robot manufacturer generally do not design or sell end effectors. The hand of the robot has provision for connecting special end effectors that are specifically designed for a purpose. The robot end-effector or end-of-arm tooling is the bridge between the robot arm and the environment around it. Depending on the task, the actions of the gripper vary. A robotic end-effector which is attached to the wrist of the robot arm is a device that enables the general-purpose robot to grip materials, parts and tools to perform a specific task. The end-effectors are also called the grippers. There are various types of end-effectors to perform the different work functions. The various types of grippers can be divided into the following major categories. Mechanical grippers Hooking or lifting grippers Grippers for scooping or ladling powders or molten metal or plastics Vacuum cups Magnetic grippers Others: Adhesive or Electrostatic Grippers The grippers can be classified into, Part handling grippers Tools handling grippers Special grippers The part handling grippers are used to grasp and hold objects that are required to be transported from one point to another placed for some assembly operations. The part handling applications include machine loading and unloading, picking parts from a conveyor and moving parts, etc. There are grippers to hold tools like welding gun or spray painting gun to perform a specific task. The robot hand may hold a deburring tool. The grippers of the robot may be specialized device like remote center compliance (RCC) to insert an external mating component into an internal member, viz. inserting a plug into a hole. The other type of end-effectors employs some physical principal like magnetism or vacuum technology to hold the object securely. 7.2.1 Classification of End-effectors: An end effector of a robot can be designated to have several fingers, joints and degrees of freedom. Any combination of these factors gives different grasping modalities to the end-effector. The general end-effectors can be grouped according to the type of grasping modality as follows, Mechanical fingers Special tools Universal fingers 7.2.1.1 Mechanical Fingers: They are used to perform some special tasks. Gripping by mechanical type fingers is less versatile and less dexterous than holding by universal fingers as the grippers with mechanical fingers have fewer numbers of joints and lesser flexibility. The grippers can be sub grouped according to finger classifications like two, three and five-finger types. The two-finger gripper is the most popular. Robot end-effectors can be classified on the basis of the mode of gripping as external and internal gripping. The internal gripping system grips the internal surface of objects with open fingers whereas the external gripper grips the exterior surface of the object with closed fingers. Robot end-effectors are also classified according to the number of degrees of freedom (DOF) incorporated in the gripper structures. Typical mechanical grippers belong to the class of 1 DOF. A few grippers can be found with more than 2 DOF. Using some special tooling action, robot grippers can be designed to retain objects by electromagnetic action or under the action of vacuum. Electromagnets and vacuum cups are typical devices in this class. Usually, if the objects to be handled are too large and ferromagnetic in nature, electromagnetic grippers may be employed. In some applications where the objects are too thin to be handled, they can be held by vacuum grippers. 7.2.1.2 Universal Fingers: Usually comprise multipurpose grippers of more than three fingers and or more than one joint on each finger which provide the capacity to perform a wide variety of grasping and manipulating assignments. 7.2.1.3 Mechanical Gripper: A mechanical gripper is an end-effector that uses mechanical fingers actuated by a mechanism to grip an object. The fingers are the appendages of the gripper that actually makes contact with the object. The fingers are either attached to the mechanism or an integral part of mechanism. 7.3. Types Of Grippers 7.3.1. The Clapper The Clapper can be built using metal, plastic or wood. It consists of a wrist joint. Connected to the wrists are 2 plastic plates. The bottom plate is secured to the wrist and the top plate is hinged. A small spring-loaded solenoid is positioned between the two plates. When solenoid is active, the gripper is closed and when solenoid is not active, the gripper is open. The choice of solenoid is important. It must fit between the 2 flaps and should have a flat bottom to facilitate mounting. It must operate within the voltage used in your robot (usually 6V or 12 V). If solenoid doesnt have mounting flanges opposite the plunger, mount it in the center of the bottom flap using household cement 7.3.2. The Two Pincher Gripper The two-pincher gripper consists of two movable fingers, somewhat like the claw of a lobster. In todays industry the two-finger mechanical grippers with a single degree of freedom are the most usual used device. The fingers have symmetrical motions with respect to the gripper axis. A particular category of grippers for industrial robots has two degrees of freedom and a single driving motor. The relative positions of the component elements depend on the frictional coefficients between work piece and fingers and on the initial position of the work piece with respect to the grippers frame. 7.4 Development and Fabrication of the Two Pincher Gripper 8.Scope For Further Work 9. Conclusion: The Robotic Gripper is essentially a vital part of robot design. In its history it was simple and sometimes ineffective but day by day modern advances have been inputted to such robotic systems which have proved to be highly efficient, effective and versatile. A flurry of innovations and developments is on the agenda in context of robotics designs of the future. Major manufacturers are constantly striving to improve existing technology as RD divisions focus on figuring out ways and means to conjure up better and simpler forms of robots. Other such technologies that have been significantly improved in robotic designs are in: Agriculture Automobile Construction Entertainment Health care: hospitals, patient-care, surgery, research, etc. Laboratories: science, engineering, etc. Law enforcement: surveillance, patrol, etc. Manufacturing Military: demining, surveillance, attack, etc.1` Mining, excavation, and exploration Transportation: air, ground, rail, space, etc. Utilities: gas, water, and electricity With such advances in technology the future of robotics design seems promising. 10. References: Books: Stan Gibilisco, Concise encyclopedia of Robotics Klafter D Richard; Robotic Engineering An Integrated Approach, 1st Edition, 1989. Craig J John, Introduction to Robotics Mechanics and Control, 3rd Edition, Pearson Education, Inc, 2005. Schilling J Robert, Fundamentals of Robotics Analysis and Control, 1st Edition, Prentice Hall, 1990.
Sunday, January 19, 2020
The Evolution of Engineering
Itââ¬â¢s no secret that technology has not only changed life as we know it, but has also changed the face of most every career field known to man.à Nowhere is this evolution more evident than in the field of engineering.à In order to better review the impact that advancements in technology have had on the field of engineering, exploration of past versus present comparison is necessary.à Upon reviewing the variations between engineering of the past and engineering of present, the dramatic involvement of technology in the field becomes inherently evident.Over the course of the last two decades, the field of engineering has come into its own.à One major component of the ââ¬Ënew and improvedââ¬â¢ field of engineering is the utilization of modern technology.à In fact, engineering itself is considered a frontier of development in modern technology itself.à ââ¬Å"Scientific discovery and advancement affect our lives in two different waysââ¬âthrough new polici es and regulations that provide broad national direction and through new products and processes that enhance our lives and communities. Technology and engineering translate scientific knowledge into action.â⬠(USDA 2007)Engineering, in the 1980s, was a field wherein the predominant research and development process surrounded countless instances of trial and error.à Due in part to the fact that all experimentation and designed was based solely on human ability and human ideas, engineering was primarily considered a ââ¬Ëthinking manââ¬â¢sââ¬â¢ career choice.à For example, in the early 1980s, when mechanical engineers designed motor vehicles, much of their design was dependant on tangible models and hand drawn blueprints.à Today, on the other hand, computer technology allows for the use of computerized 3D models and AutoCAD architecture.à This same fact holds true for not only the vehicle industry, but the building industry, property development, and many more .Upon close examination of the implications of technology on engineering, it is revealed that this phenomenon began far earlier than many believe.à In fact, students at Virginia Tech have been required to own a personal computer since the year 1984.à However, improvements in computer technology have dramatically improved engineering accuracy and performance, have increased efficiency, and have made it possible for a wider variant of individuals to enter the engineering field.à ââ¬Å"In terms of the difficulty level of problems, the computer has helped tremendously. In the pre-computer era, we'd spend a couple of weeks on a serious problem. Now it can be done overnight. In terms of the actual mode of teaching, we present less hand-calculation procedures than in previous times. It's just not needed.â⬠(EE/CPE VanLandingham 97)A variety of modern technologies have added to the dynamics of the engineering field.à However, it is arguable that computer advancements have affected the field more than any other.à Because much of engineering is design, the use of computers as a design tool is prevalent.à Thanks to the precision and speed offered by the use of certain computer programs during the engineering design process, problems that once seemed impossible are now considered trivial.à ââ¬Å"Students can do design and some calculations that were real tough to do before.à ââ¬Å"We use computers a lot in the lab to take data and analyze data off the equipment. Most research projects take data using computers, and our folks have to know how to write programs and microprocessor code.â⬠(EE/CPE Claus 97)Experts also agree that the integration of computers into the field of engineering have made the job more ââ¬Ëfunââ¬â¢.à Computers allow engineers to heighten levels of creativity in their work while allowing for less stress in problem solving.à In short, engineers can now focus more heartily on the creative aspects of their project because they spend less time in problem solving.Interestingly though, the speculation surrounding technological and computer advancements in the field of engineering is not all positive.à There are many people who believe that the overt use of computers in the field of engineering provides engineers with a crutch that allows for less thorough problem examination.à It is also argued that engineers become ââ¬Ëlaxââ¬â¢ in analysis because they trust computers to be accurate.à The problem with this fact is that computers are not infallible.à If one data set is entered incorrectly, the entire analysis will be incorrect.à Basically, computers should moreover be used to verify analysis as opposed to actually perform the analysis itself.Many engineering professors and argue that the overuse of computers will promote carelessness in the field. à ââ¬Å"I see students relying too much on computers, computation programs and symbolic manipulators ââ¬â which is leading them away from self-discipline.à ââ¬Å"They are using tools and have no way to check them. They come up with an answer on the computer and don't know enough to challenge their answer. They are using tools and have no way to check them. They come up with an answer on the computer and don't know enough to challenge their answer. They figure if the computer came up with the answer, it's got to be right.â⬠(EE/CPE Brown 97)There is also evidence the integration of computer technology in engineering will ââ¬Ëkillââ¬â¢ programming in the field.à Because of the incredible technology and dynamic computer programs available to engineers as a whole, there is a decreased need for new programming.à Certain computer programs offer engineers ââ¬Ëready to useââ¬â¢ packages for problem solving, which eliminates the need for writing code in problem solving.à The question as to whether or not this is a ââ¬Ëgood thingââ¬â¢ is perhaps most prominent in engin eering education.à ââ¬Ëâ⬠Technology as the magic bullet for education is being vastly oversold,â⬠cautioned Professor Jim Armstrong. ââ¬Å"We can use the computers for computation and communication, but we must maintain the interpersonal aspect of teaching,â⬠ââ¬â¢ (EE/CPE 97)The integration of modern technology and the integration of computers in particular, into the field of engineering has changed the face of all engineering disciplines as we know it. It is largely agreed that these advancements have improved the field of engineering in ways never before thought possible.à However, it is pertinent to note that not every implementation or change is considered beneficial. While, for the most part, computers and technology have only improved engineer problem solving and efficiency, it is also argued that these integrations have given birth to the ââ¬Ëlazyââ¬â¢ engineer.à In fact, there are those who believe that todayââ¬â¢s engineer is already considered lax because they now have the computer to do the work for them.à ââ¬Å"Engineers are lazy. Engineers don't like to work hard and like to come up with ways to make their lives easierâ⬠(iPaw 2009) This view creates a paradox for many, because the very definition of innovation is the search for ways to make life more simple.In summation, modern technology and computer advancement has made the field of engineering more exciting for those engaged.à It has also allowed for more a more variant professional base within the field.à However, perhaps the most notable change in the field that comes as a direct reflection of computer advancement is the increase in the speed and efficiency with which engineers solve an assortment of problems.à This increased efficiency allows for a more rapid development of a product or and outcome and also allows for a heightened opportunity to concentrate on creativity and design.à Basically, computers and modern technology make the field of engineering more fun.While it must be acknowledged that not all views surrounding computer advancement and engineering are possible, it is widely accepted that computers have drastically improved every discipline of engineering while also acting as a catalyst behind creative engineering and innovation.From a personal perspective, we have entered the dawn of a new engineering age.à The field of engineering is rapidly becoming as much an art as it is an analytical career field.à This advancement and innovation is solely credited to the integration of modern technology into the engineering disciplines.à In the last five years, computer technology has taken not only engineering, but every career to new and exciting levels.à From the farmer to the fighter pilot, computer technology has changed the dynamic of ââ¬Ëworkââ¬â¢ as we know it, and nowhere is this truth more evident than in the field of engineering.Works Citedââ¬Å"Catspaw's Guide to the Inevitab ly Insane.â⬠Catspaw's Guide to the Inevitably Insane. 29 Apr. 2009 .ââ¬Å"Computers and Engineering: Instructional Boon or Crutch?.â⬠Virginia Tech | Electrical and Computer Engineering. 29 Apr. 2009 .Govil, Rekha. Recent Advancements in Computer Science and Technology. new york: Allied Publishers Pvt. Ltd., 1999.ââ¬Å"Technology & Engineering.â⬠Cooperative State Research, Education, and Extension Service (CSREES). 29 Apr. 2009 .Fundamental Concepts in Computer Science (Advances in Computer Science and Engineering: Texts). London: Imperial College Press, 2009.
Saturday, January 11, 2020
Driving License Essay
The childhood is the stage when all our fantasies start to grow. That was the stage when a fantasy about motor bike grew up into my mind and I got interested in driving bike. As my fantasy supported me I started to fulfill my interest and started to learn driving. At that time my uncle who was experienced in this line; he started to teach me driving. After a few months my fantasies boosted up because I was learning a bit how to drive. After learning driving for about two years, my parents came to know the matter and thought that I was in a stage to have a driving license, since they heard that I was harassed in the roads many times by the police for not having a driving license while driving. As a result, my parents gave me the permission to have a driving license. So, I found out that there is an association responsible to delivering the driverââ¬â¢s license in Bangladesh, which is the Bangladesh Roads and Transport Association (BRTA). I went there to get the license, but later o n I came to know that there are many problems which I have to face while getting the driving license. I took it as a challenge to overcome those problems and get the license in a legal way; since I was able to become a good driver within that time. The other point that made me interest to take this topic was the sudden death of two of my closest friend in the road accident, which was as a shock in my life. Why only the accident of my two friends, there were 3,917 highway accidents in the year 2012 (ââ¬Å"Ensure safetyâ⬠). Many people argued that the road accidents occur because of the bad condition of the road, but most of the highways in Bangladesh are now treated as of standard quality highways. There are also some other people arguing that the road accidents occurs because of the unfit vehicles running on the road; but still a majority portion of the people agrees with me that most of the road accidents occur because of the inexperienced driverââ¬â¢s. Then a question came up in my mind that ââ¬Å"Why are the drivers inexperienced?â⬠I was able to solveà this question and came up with the answer that since the driverââ¬â¢s are getting the license in an illegal way, so they are becoming inexperienced and be coming the cause of the accidents. Later on another question came up in my mind, ââ¬Å"Why the driverââ¬â¢s are getting the license in an illegal way, since there is a way to get the license in a legal way?â⬠It was tough for me to solve this question, but when I went to BRTA to get my own driving license I found out that every person who goes there are harassed a lot, only if they wants to get the license in a legal way. Still, if someone wants to get the driving license in a legal way then he is forced to give bribes during the procedure. Then, my interest grew to find out the hazardous experience of the people while getting the driving license. We all know that bribe plays a vital role in the Bangladesh society. So, it makes two ways to get the license; legal way and illegal way. In the legal way one has to pass the test required to get the license. There are mainly one written test and three practical tests. If someone even passes the test successfully, the officials over there will not make them pass until they get the money. During the process, if someone denies giving bribe, he will have to wait for at least 6 months to get the license. But, in the illegal way, just give the bribe and sit back in your home, the brokers will process the license and will give it after 3 months. The rate that they have fixed to get the license in an illegal way is Tk. 5,000/= per license. Sometimes we will find many people around us, who are not ready to pay any illegal fees. So, first they prepare themselves to get the license in the legal way. But, after passing the written test when they go to give the practical test and sees that every thing is on the examiners hand, they gets scarred. Most of the time if someone passes the exam but refuses to give the minimum amount of money, then the examiner harasses the person and in a sense force him to fail. Then, those people who went there in an intention to get the license in a legal way loose their faith on them and agree to get the license in an illegal way. Background ââ¬Å"Bangladesh Road Transport Authority (BRTA) is the only association in Bangladesh who is responsible for the promotion of road safety and traffic regulations, by delivering the license of the drivers and also by registering the vehicles in Bangladesh. BRTA was first institutionalized in 1987 and started its function from January 1988. BRTA is the regulatory body for the control and management of the road transport system and road safety related activities of the Republic of Bangladesh. BRTA maintains its function with total manpower of 291 through the head office in Dhaka, 19 circle and 20 zonal Offices spread all over the countryâ⬠(Brta). All the zonal offices can deliver driving license, but to get the license one have to pass one written test, one oral test and three practical tests. First of all one have to fill a form, requesting for getting a driving license, giving the adequate information about him, regarding his name, fatherââ¬â¢s name, age, sex, address, blood group, etc. After submitting the form one would get the ââ¬Å"Learnerââ¬â¢s Licenseâ⬠. It will cost one Tk. 750. Actually getting the learnerââ¬â¢s license means that one has got the permission to learn the driving. After getting the learnerââ¬â¢s license one would get 3 months of duration to prepare himself. According to that date and time mentioned in the Learnerââ¬â¢s License, one has to go and attend the written and oral test. The written and oral tests donââ¬â¢t take place except Thursday. The result will be published on that day and after that they will give a seal in the learnerââ¬â¢s license and also provide the date and time of the practical exams. The entire practical exam will be held on one single day. The first practical exam is known as the ââ¬Å"Zig-Zagâ⬠test. The model is given below: In this test one have to go with his car from A side to B side and again come back with his car in the reverse gear from side B to side A, without moving or touching the flags that will be there at each points of the line. The width on the two lines will be 1.5 times the wide of the car. If someone touches the flags, he will fail the exam. In that case, he have to resubmit the fees and appear the test again after getting the date and time approved by the BRTA. The second test in known as the ââ¬Å"Rampâ⬠test. The model is given below: In this test, one has to go driving the car on the slope. The examiner will be sitting beside him. While going up the slope the examiner will tell him to stop the car and the person have to stop the car at the slope. The examiner will again tell the person go to up the slope without letting the car go back. This is the hardest part of getting the license. Most of the people fail in this stage because while moving the car front, the carââ¬â¢s weight forces the car to go down the slope. Since, many people fail in this test, so the examiner tries to take the advantage of the bribe over here. The examiner tells that if he gets money, then he will make the person pass, or else he will fail him. The third test is called the ââ¬Å"Road Testâ⬠. During this test the examiner will be sitting beside the person and will be told to drive the car in the busy roads. This test is mainly taken to check whether the person knows the rules and regulation of the traffic system and also to drive safely. The examiner might say suddenly to park the car in the no parking zone. If one stops the car there that means that he doesnââ¬â¢t knows the rules and regulation and thus, he is going to fail in the exam. If one passes the entire exam then only he is capable of getting the driving license in a legal way. But, the present situation of the BRTA supports that; one must have to give bribe to pass the exams. Many people think that just passing those exams doesnââ¬â¢t makes one an experienced driver. In that case, they concluded that knowing the driving is the main thing, it doesnââ¬â¢t matter that whether you got the license in a legal or illegal way. But, a majority of the people says that, if someone knows how to drive well then he will also be able to pass the exams of BRTA without giving the bribe and thus can get a license in a legal way. Hypothesis Since, the driving license is being delivered by a Government institution people are to follow a lot of procedures in getting the driving license.à From my research, I expect to find that the corruption in delivering license illegally and problems are faced by the driving license owners. I will try to find out the reasons why car ownerââ¬â¢s doesnââ¬â¢t want to hire a driver who has an illegal license. I think that a person who is well-educated knows that there are many problems that the other drivers have to face if he hires that drivers, this is the most important reason why they donââ¬â¢t want to hire illegal license owner. From my opinion our license delivering system should be stricter. Limitations of the Study: There are some limitations of my research paper. They are pointed out below: In my survey, I was unable to target those students who donââ¬â¢t have a driving license, because if they donââ¬â¢t have a driving license, how they are going to have an experience in getting the driving license. I had to stay between the age boundaries of 19-22. As my research topic states, my target group is the NSU students and most of them are from the age of 19-22. The major limitation of my research is that I was able to target especially those who had the driving license to drive the private cars only. The driving license is delivered actually for three categories of vehicles- light, medium and heavy. One who has got the license for the first (light) category will be able to apply for the second category (medium) after three years. To get the license of the heavy category one has to get another three years experience of driving the medium vehicles (Hossain). Since, my age boundary is from 19-22. So, most of them have the license of the light category, which gives them the permission to drive only the private cars. I am not able to get any information from the officials of the BRTA, because they arenââ¬â¢t ready to talk with me about their situation, which is also another major limitation of my research paper. I think that they could have unveiled a lot of information, which could be of great use in my research paper. The last and also the most important limitations of my research paper is the time factor and the present situation of our country. I am not getting enough time to do my research thoroughly on this topic. Research I have used the BRTAââ¬â¢s website; some posted articles in the Internet and the newspaper as my secondary sources, which were being used throughout the paper.à For my primary research I have prepared a questionnaire and also have interviewed two people how have got bad experience in getting the driving license. The first person whom I interviewed is a regular student of NSU and the other person is a professional driver. Their interview helped me a lot in my research paper. The questionnaire that I have prepared consists of 13 questions. I have given 40 people to fill up my questionnaire. From Figure 1, we can see that 8 of them, which make 32% of my sample size, claimed that they have owned the license in a legal way. From the rest of the students, 13 (52%) of them said that they got the driving license in an illegal way and the rest 4 (16%) claimed that they have got the driving license through a driving school. But still, one student who have got the license through a driving school, said that he have passed all the exams of the BRTA to get the license, but for the rest three people, who are all female, said that they have got the driving license without appearing the tests. They made an agreement with the driving school, which states that after they have learned how to drive, the driving school will be responsible to deliver them the driving license and in exchange they will be giving a certain amount of money. So, after that I can see that only one person from the driving school have got the license in a legal way. From the rest of my sample, only 8 (32%) of them ; who got the driving license in a legal way, have said that they have appeared and passed all the exams, without considering the case that they have failed in the exam and passed it again by giving bribe. Actually the people; especially the brokers, wonââ¬â¢t let one pass the exam without giving the bribe. So, in a way those people who have been learning to drive for last 6 months and want to get the license in a legal way are forced to give bribe. From Figure 2, we can see that 6 (67%) of the NSU students; who have got the license in a legal way, agreed with this statement, and told that they have been forced during the exams to give bribe, since everything is on the examiners hand, if he likes to pass one, he will make him pass, but if he wants to fail one, then that person will be harassed a lot until he fails. But, still 3 of the students were luck enough to contradict with me and claimed themselves to pass all the exams without giving the bribes. They also stated that they werenââ¬â¢t even forced during the exams to give bribes. The students who have got the license in an illegal way is not considered in this case because at the beginning when they decided to get the license, they took the illegal way to get the license, so they have given the bribe in the beginning and they donââ¬â¢t need to or forced to give the bribe again during the exams. Since, the students have faced a bit of the hazardous experience, so I asked them again whether that was the ending of the harassment process or not. But, many of them answered no and said that getting the license was the starting of a new harassment process. They were then caught by the police and harassed without any reason. In most of the times police claimed that the licenses are illegal. Then the students have to come out from there by giving bribe, it doesnââ¬â¢t matter that whether you really got the license in a legal or illegal way. In some exceptional case I have found out that the police also said that the picture that they have in the driving license doesnââ¬â¢t matches with the students. I was really shocked to hear that how the police can claim those type of fake reasons to harass a people. I also came to know that a student was saying that he was in a hurry, because his mother was admitted in the hospital, but still the police didnââ¬â¢t tried to hear that and filed a case against him, fining him for driving faster. After all the claims that the police stated, I asked them ââ¬Å"What do you think about BRTA?â⬠One canââ¬â¢t imagine about the response that I have got from this answer. I gave them five options. Within those the first option that I gave them was ââ¬Å"They are all corruptedâ⬠. After, reading this option, most of them didnââ¬â¢t go to read the other options. From the figure 3, it is clearly stated that 20 of the students; which means 80%, thinks that BRTA is corrupted andà we canââ¬â¢t do anything about it except going with the system. Within those 13 students, 7 of the students have faced the problems face to face by getting the license in a legal way and 13 of them knew earlier that BRTA is corrupted, so they have got the license in an illegal way. The other 2 of the students told that the existing system should be developed, which means that BRTA should not be privatized, since the corruption level hasnââ¬â¢t gone beyond the limit. But, the rest 3 of the studentââ¬â¢s answer was quiet interesting; they all have got the license in an illegal, and think that BRTAââ¬â¢s corruption level has gone beyond our limit and that is the reason it should be privatized. None of the students told that the system is all right and they are operating in the way they should operate, which is quiet interesting. Summary of Findings From my primary research I was able to find out that the harassment process of getting the driving license doesnââ¬â¢t ends also after getting the driving license. The exam pattern is set in a way that will make the people harass. Most of them who have seen the exam pattern with their own eyes think that the existing exam pattern should be updated a bit, because it is designed in a way that will force the people to give bribe. One by knowing the BRTAââ¬â¢s license delivering system doesnââ¬â¢t likes to get the license in a legal way, because they know that they have to give the bribe by hook or by crook. So, most of them are targeting to get the license in an illegal way. It was found out that 80% of the driving license delivered by the BRTA is forged. (Hossain). So, it is clear that because of the harassment that the BRTA does to the people, many people try to get the license in an illegal way. That is also the reason why most of the people think that BRTA is corrupted. In a recent newspaper article is was being posted that because of the corruption level in BRTA, every year Bangladesh Government is loosing 100 crore taka, which also can be the reason why people and I personally think that BRTA should be privatized (Mehedi). Suggestions Regarding all the problems that BRTA has, I think that there is a scope for the government to play role. Government should implement new rules and establish a new driving license delivering exams, which will be able to solve the harassment problem of the normal people a bit. Those policies obviously should not be designed in such a way that there will be scope to get or give bribe. It should be designed in a way that will examine those people who are getting the license are eligible and also quiet well qualified to get the license. Thus, it will obviously help to decrease the road accidents in Bangladesh. Every time we can see that the Government is coming up with new laws and policies, but they are not implemented in a nice way. If that happens, it is better to privatize the BRTA, without updating the existing system. Now days, we are also able to find out that many female are driving their own cars. It becomes more hazardous for them to get the license in a legal way. So, they are going to the driving schools to learn driving. In my survey, I have find out that almost all the female have got their driving license through the driving school and also in an illegal way. The driving learning school should also be developed, because they are the ones responsible for teaching the people to drive well. If they gets corrupted and gives the driving license to those peoples who doesnââ¬â¢t deserves it then the problem will be huge. Conclusion For us, those who have the adequate amount of money, getting the driving license is not a matter of fact for them and thus they may also disagree that getting the driving license is a harassment process. But, consider about those people who think thousand times before spending Tk. 100. For a professional driver, it really becomes hard for the first time to get the driving license. After doing this research I was really satisfied a bit that I was able to fulfill a bit of my childhood interest and also able to find out a validà reason for my friends death. But still, I personally think that there should be another research done on the unfit vehicles running on the road, which can also be held responsible for the increase in the road accidents in our country. Works Cited Brta. Home page. 01 Jan. 2004. 30 July 2005 . ââ¬Å"Ensure Safety basic rights of the People.â⬠Nation. Ittefaq.com 11 June 2005. 01 July 2005 . Hossain, Moazzem. ââ¬Å"Roads, Highways turn into Virtual Death Trap.â⬠Newagebd.com 21 May 2005. 01 July 2005 < http://www.newagebd.com/2005/may/21/front.html>. Islam, Nurul. Telephone interview. 20 July 2005. Karim, Raihan Bin. Telephone interview. 20 July 2005. Mehedi, Rashed. ââ¬Å"Corruption in BRTA, Government loosing 100 crore taka every year.â⬠Daily Janokhantho 24 July 2005: 1.
Friday, January 3, 2020
Third Ventricle Function and Anatomy
The third ventricle is a narrow cavity located between the two hemispheres of the diencephalon of the forebrain. The third ventricle is part of a network of linked cavities (cerebral ventricles) in the brain that extend to form the central canal of the spinal cord. The cerebral ventricles consist of the lateral ventricles, third ventricle, and fourth ventricle. Key Takeaways The third ventricle is one of four brain ventricles. It is a cavity filled with cerebrospinal fluid located between the two hemispheres of the diencephalon of the forebrain.The third ventricle helps to protect the brain from trauma and injury.The third ventricle is also involved in the transport of both nutrients and waste from the bodys central nervous system.It is also involved in the circulation of the cerebrospinal fluid. The ventricles contain cerebrospinal fluid, which is produced by specialized epithelium located within the ventricles called the choroid plexus. The third ventricle is connected to the fourth ventricle via the cerebral aqueduct, which extends through the midbrain. Third Ventricle Function The third ventricle is involved in several functions of the body including: Protection of the Brain From TraumaPathway for the Circulation of Cerebrospinal FluidTransportation ofà Nutrients to and Waste from the Central Nervous System Third Ventricle Location Directionally, the third ventricle is situated in the middle of the cerebral hemispheres, between the right and left lateral ventricles. The third ventricle is inferior to the fornix and corpus callosum. Third Ventricle Structure The third ventricle is surrounded by a number of structures of the diencephalon. The diencephalon is a division of the forebrain that relays sensory information between brain regions and controls many autonomic functions. It links endocrine system, nervous system, and limbic system structures. The third ventricleà can be described as having six components: a roof, a floor, and four walls. The roof of the third ventricle is formed by a part of theà choroid plexus known as the tela chorioidea. The tela chorioidea is a dense network of capillaries that is surrounded by ependymal cells. These cells produce cerebrospinal fluid. The floor of the third ventricle is formed by a number of structures including the hypothalamus, subthalamus,à mammilary bodies,à infundibulum (pituitary stalk), and the tectum of the midbrain. The lateral walls of the third ventricle are formed by the walls of the left and right thalamus. The anterior wall is formed by the anterior commissure (white matter nerve fibers), lamina terminalis, and optic chiasma. The posterior wall is formed by the pineal gland and habenular commissures. Attached to the external walls of the third ventricle areà interthalamic adhesions (bands of gray matter) that cross the third ventricle cavity and connect the two thalami. The third ventricle is connected to the lateral ventricles by channels called interventricular foramina or foramina of Monro. These channels allow cerebrospinal fluid to flow from the lateral ventricles to the third ventricle. The cerebral aqueduct connects the third ventricle to the fourth ventricle. The third ventricle also has small indentations known as recesses. Recesses of the third ventricle include the preoptic recess (near the optic chiasma), infundibular recess (funnel shaped recess that extends downward into the pituitary stalk), mammillary recess (formed by protrusions of the mammilary bodies into the third ventricle), and pineal recess (extends into the pineal gland). Third Ventricle Abnormalities CT scan of a brain of a patient with intracerebral hemorrhage from stroke with bleeding into the third ventricle. Sopone Nawoot/iStock/Getty Images Plus Third ventricle issues and abnormalities can occur in a variety of conditions like stroke, meningitis and hydrocephalus. A relatively common cause of an abnormality of the third ventricle occurs with congenital hydrocephalus (abnormal contour with a dilated third ventricle). Ventricular System of the Brain The ventricular system consists of two lateral ventricles, the third ventricle, and the fourth ventricle. More Information For additional information on the third ventricle, see: The Third Ventricle Anatomy of the Brain The brain is the bodys control center. It receives, interprets, and directs sensory information in the body. Find out more about the brains anatomy. Divisions of the Brain Forebrain - encompasses the cerebral cortex and brain lobes.Midbrain - connects the forebrain to the hindbrain.Hindbrain - regulates autonomic functions and coordinates movement. Sources Glastonbury, Christine M., et al. ââ¬Å"Masses and Malformations of the Third Ventricle: Normal Anatomic Relationships and Differential Diagnoses.â⬠RadioGraphics, pubs.rsna.org/doi/full/10.1148/rg.317115083.
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