Chabros International Group: A World of Wood

The Chabros International Group started with fairly low-key beginnings in the late sixties, but has gradually become a respected name in a wealth of different timber markets. In particular, it has become a well-known wood and veneer supplier due to the relentless and often pioneering efforts of its president Antoine Chami, who has carefully built up a reputation for high quality products and exceptional service. The company employs more than 600 staff with an annual turnover of $100 million USD.Chabros is a leading producer and supplier of wood and veneer and a distributor of a wide range of interior and exterior products that have been specified and used in major high-end projects throughout the Middle East for over 40 years. With an aim to cater to the innovative needs of woodworking professionals, architects & interior designers as well as contractors, Chabros has established overseas production units and distribution points throughout the Middle East Region, targeting businesses that are in search for quality products and exceptional service.In addition to its strong presence of Lebanon, Chabros has always been devoted to expand its range of products to provide original and fresh design solutions to its customers. Chabros has also added a line of services to its current product offerings including veneer stitching & pressing, sanding, veneer finger jointing, parquet and exterior decking installation as well as teak yacht decking. Chabros is positioned as one of the market leading suppliers of Wood & Veneer with a large stock of wide range of products, exceptional service and unique expertise.The company’s success is driven by its loyal customers, their team and their unrelenting focus on delivering results by executing with excellence. In Lebanon, Chabros was one of the first to produce veneer products instead of solid wood because of its ecological and economical benefits. The company’s vision has always been to expand the business further in order to meet the industry’s demands and replenish the shortages that exist. However, due to the wars and political unrest in Lebanon, the company’s desire to expand was stifled somewhat until 1998 when it ventured into the GCC and could establish a branch in Dubai.In the midst of a growing global market, Chabros has established overseas production units and distribution points throughout the Middle East Region, targeting businesses that are in search for quality products and exceptional service. The company’s regional distribution centers are headquartered in Dubai covering a vast geographical area of supply. The Chabros International Group case studies how Chabros confronts a drastic drop in its largest subsidiary's sales after 2008's global economic crisis.Chami, the company’s owner and president, was reviewing his company's 2009 end-of-year financial statements and, in particular, a 30 per cent drop in sales in Dubai. In 2007, a year before the globa l economic crisis, Chami had invested more than $11 million to acquire and expand a sawmill in Serbia to meet Chabros's growing lumber sales demand. With a much higher capacity to produce lumber and a much lower probability to sell it, Chami had to decide what to do to overcome this challenge. Shocked, Chami went into crisis mode and consulted all of his top management to address these issues.Questions that were raised: Should he close parts of his Serbian sawmill? Should he try to boost his company's sales to use all of his sawmill's available capacity? If so, should Chabros try to increase sales within the United Arab Emirates, Saudi Arabia, Qatar, Oman, and Egypt or should it expand into a new country such as Algeria, Bahrain, Iran, Iraq, Jordan, Kuwait, Libya, Syria, Tunisia? Would Morocco, among other countries, be the best country to expand into? Was it the right time to embark on such an expansion?The management also had explored different alternatives such as closing parts o f the Serbian sawmill and different strategies that they could follow if they decided to try grow the company’s sales. The future seemed so uncertain and the team did not know what to expect. It was clear that closing the Serbian sawmill was out of the question, mainly because the company had invested over $11 just less than two years ago. Closing that plant would put the company in a difficult financial situation as it invested for the long run.The company’s best alternative would be to continue operations in the Serbian sawmill and try to expand into other markets where such materials were in high demand. Prior to this, expansion, an extensive research would have to be conducted, particularly due to the crisis affecting many parts of the world. If Chabros was able to find an expanding market, they could continue operations in all of their sawmills. Another option would be to sell off either part of the operations or the entire sawmill.Both of these options would put them at a loss, however, it would be a better option than shutting the entire mill. Some of the strengths and competitive advantages, which Chabros International Group consisted of, were being simultaneously a manufacturer and a wholesaler, which gave them strategic flexibility. They understood and adapted to its Western suppliers and the Middle East and North Africa suppliers. Lebanese people are very adaptable due to their culture, which brought the main sawmill to a much greater advantage.Another strength which Chabros had, was providing its customers with more varied and customized wood products than most other competitors, which built distinctive relationships with its key suppliers. With strengths and advantages come disadvantages, which Chabros had as well. Being a lumber manufacturer put Chabros in the reverse situation and sometimes gave it a disadvantage compared to lumber wholesalers. This happened during the financial crisis, where euro reached an all time high of $1.55 and Chabro’s Russian supplier was able to sell at a lower price. A weak point where Chabros stands, is not working on their brand name. Although Chabros was operating in seven MENA countries, their name was not very well known, not to mention in its parent country, Lebanon. Through its affiliates all over the world, the company has established strategic alliances with mills in Africa, North and South America and Europe, which are responsible for sourcing, cooking, cutting, drying, grading and supplying the various wood products.In recent years, it has broadened its product lines to include new products such as mother-of-pearl laminates and Duroxill UF powder glue. The growth of the company means it has also extended its services, which have developed to include the production of lay-ons, veneered boards and parquetry designs through the use of various splicing, cutting and laser machines in its different locations. Chabros International Group: A World of Wood The Chabros International Group started with fairly low-key beginnings in the late sixties, but has gradually become a respected name in a wealth of different timber markets. In particular, it has become a well-known wood and veneer supplier due to the relentless and often pioneering efforts of its president Antoine Chami, who has carefully built up a reputation for high quality products and exceptional service. The company employs more than 600 staff with an annual turnover of $100 million USD.Chabros is a leading producer and supplier of wood and veneer and a distributor of a wide range of interior and exterior products that have been specified and used in major high-end projects throughout the Middle East for over 40 years. With an aim to cater to the innovative needs of woodworking professionals, architects & interior designers as well as contractors, Chabros has established overseas production units and distribution points throughout the Middle East Region, targeting businesses that are in search for quality products and exceptional service.In addition to its strong presence of Lebanon, Chabros has always been devoted to expand its range of products to provide original and fresh design solutions to its customers. Chabros has also added a line of services to its current product offerings including veneer stitching & pressing, sanding, veneer finger jointing, parquet and exterior decking installation as well as teak yacht decking. Chabros is positioned as one of the market leading suppliers of Wood & Veneer with a large stock of wide range of products, exceptional service and unique expertise.The company’s success is driven by its loyal customers, their team and their unrelenting focus on delivering results by executing with excellence. In Lebanon, Chabros was one of the first to produce veneer products instead of solid wood because of its ecological and economical benefits. The company’s vision has always been to expand the business further in order to meet the industry’s demands and replenish the shortages that exist. However, due to the wars and political unrest in Lebanon, the company’s desire to expand was stifled somewhat until 1998 when it ventured into the GCC and could establish a branch in Dubai.In the midst of a growing global market, Chabros has established overseas production units and distribution points throughout the Middle East Region, targeting businesses that are in search for quality products and exceptional service. The company’s regional distribution centers are headquartered in Dubai covering a vast geographical area of supply. The Chabros International Group case studies how Chabros confronts a drastic drop in its largest subsidiary's sales after 2008's global economic crisis.Chami, the company’s owner and president, was reviewing his company's 2009 end-of-year financial statements and, in particular, a 30 per cent drop in sales in Dubai. In 2007, a year before the globa l economic crisis, Chami had invested more than $11 million to acquire and expand a sawmill in Serbia to meet Chabros's growing lumber sales demand. With a much higher capacity to produce lumber and a much lower probability to sell it, Chami had to decide what to do to overcome this challenge. Shocked, Chami went into crisis mode and consulted all of his top management to address these issues.Questions that were raised: Should he close parts of his Serbian sawmill? Should he try to boost his company's sales to use all of his sawmill's available capacity? If so, should Chabros try to increase sales within the United Arab Emirates, Saudi Arabia, Qatar, Oman, and Egypt or should it expand into a new country such as Algeria, Bahrain, Iran, Iraq, Jordan, Kuwait, Libya, Syria, Tunisia? Would Morocco, among other countries, be the best country to expand into? Was it the right time to embark on such an expansion?The management also had explored different alternatives such as closing parts o f the Serbian sawmill and different strategies that they could follow if they decided to try grow the company’s sales. The future seemed so uncertain and the team did not know what to expect. It was clear that closing the Serbian sawmill was out of the question, mainly because the company had invested over $11 just less than two years ago. Closing that plant would put the company in a difficult financial situation as it invested for the long run.The company’s best alternative would be to continue operations in the Serbian sawmill and try to expand into other markets where such materials were in high demand. Prior to this, expansion, an extensive research would have to be conducted, particularly due to the crisis affecting many parts of the world. If Chabros was able to find an expanding market, they could continue operations in all of their sawmills. Another option would be to sell off either part of the operations or the entire sawmill.Both of these options would put them at a loss, however, it would be a better option than shutting the entire mill. Some of the strengths and competitive advantages, which Chabros International Group consisted of, were being simultaneously a manufacturer and a wholesaler, which gave them strategic flexibility. They understood and adapted to its Western suppliers and the Middle East and North Africa suppliers. Lebanese people are very adaptable due to their culture, which brought the main sawmill to a much greater advantage.Another strength which Chabros had, was providing its customers with more varied and customized wood products than most other competitors, which built distinctive relationships with its key suppliers. With strengths and advantages come disadvantages, which Chabros had as well. Being a lumber manufacturer put Chabros in the reverse situation and sometimes gave it a disadvantage compared to lumber wholesalers.This happened during the financial crisis, where euro reached an all time high of $1.55 a nd Chabro’s Russian supplier was able to sell at a lower price. A weak point where Chabros stands, is not working on their brand name. Although Chabros was operating in seven MENA countries, their name was not very well known, not to mention in its parent country, Lebanon. Through its affiliates all over the world, the company has established strategic alliances with mills in Africa, North and South America and Europe, which are responsible for sourcing, cooking, cutting, drying, grading and supplying the various wood products.In recent years, it has broadened its product lines to include new products such as mother-of-pearl laminates and Duroxill UF powder glue. The growth of the company means it has also extended its services, which have developed to include the production of lay-ons, veneered boards and parquetry designs through the use of various splicing, cutting and laser machines in its different locations.

Why Is Water Pollution An Important Issue Environmental Sciences Essay

A A A A Comprising over 70 % of the Earths surface, H2O is doubtless the most cherished natural resource that exists on our planet.A Without the apparently priceless compound comprised of H and O, life on Earth would be non-existent: it is indispensable for everything on our planet to turn and prosper.A Although we as worlds recognize this fact, we disregard it by fouling our rivers, lakes, and oceans. Subsequently, we are easy but certainly harming our planet to the point where being are deceasing at a really alarming rate.A In add-on to guiltless beings deceasing off, our imbibing H2O has become greatly affected as is our ability to utilize H2O for recreational purposes.A In order to battle H2O pollution, we must understand the jobs and go portion of the solution. POINT AND NONPOINT SOURCESAA A A Harmonizing to the American College Dictionary, pollution is defined as: A to do foul or dirty ; dirty.A Water pollution occurs when a organic structure of H2O is adversely affected due to the add-on of big sums of stuffs to the water.A When it is unfit for its intended usage, H2O is considered polluted.A Two types of H2O pollutants exist ; point beginning and nonpoint source.A Point beginnings of pollution occur when harmful substances are emitted straight into a organic structure of water.A The Exxon Valdez oil spill best illustrates a point beginning H2O pollution.A A nonpoint beginning delivers pollutants indirectly through environmental changes.A An illustration of this type of H2O pollution is when fertiliser from a field is carried into a watercourse by rain, in the signifier of run-off which in bend effects aquatic life.A The engineering exists for point beginnings of pollution to be monitored and regulated, although political factors may perplex affairs. Nonpoint beginnings are much more hard to control.A Pollution originating from nonpoint beginnings histories for a bulk of the contaminations in watercourses and lakes.AACAUSES OF POLLUTIONAAA A A A Many causes of pollution including sewerage and fertilisers contain foods such as nitrates and phosphates.A In extra degrees, foods over stimulate the growing of aquatic workss and algae.A Excessive growing of these types of beings accordingly clogs our waterways, use up dissolved O as they decompose, and block visible radiation to deeper Waterss. This, in bend, proves really harmful to aquatic beings as it affects the respiration ability or fish and other invertebrates that reside in H2O. A A A A Pollution is besides caused when silt and other suspended solids, such as dirt, washoff plowed Fieldss, building and logging sites, urban countries, and eroded river Bankss when it rains.A Under natural conditions, lakes, rivers, and other H2O organic structures undergo Eutrophication, an aging procedure that easy fills in the H2O organic structure with sediment and organic matter.A When these deposits enter assorted organic structures of H2O, fish respirationbecomes impaired, works productiveness and H2O deepness become reduced, and aquatic beings and their environments go suffocated.A Pollution in the signifier of organic stuff enters waterways in many different signifiers as sewerage, as foliages and grass cuttings, or as overflow from farm animal feedlots and pastures.A When natural bacteriums and protozoon in the H2O interrupt down this organic stuff, they begin to utilize up the O dissolved in the water.A Many types of fish and bottom-dwelling animate beings can non last when degrees of dissolved O bead below two to five parts per million.A When this occurs, it kills aquatic beings in big Numberss which leads to breaks in the nutrient concatenation. hypertext transfer protocol: //www.umich.edu/ % 7Egs265/society/image6N8.JPG Polluted River in the United Kingdom The pollution of rivers and watercourses with chemical contaminations has become one of the most crutial environmental jobs within the twentieth century. Waterborne chemical pollution come ining rivers and watercourses cause tramendous sums of devastation.AAAA A A A Pathogens are another type of pollution that turn out really harmful.A They can do many unwellnesss that range from enteric fever and dysentery to minor respiratory and tegument diseases.A Pathogens include such beings as bacteriums, viruses, and protozoan.A These pollutants enter waterways through untreated sewerage, storm drains, infected armored combat vehicles, overflow from farms, and peculiarly boats that shit sewage.A Though microscopic, these pollutants have a enormous consequence evidenced by their ability to do illness. A hypertext transfer protocol: //www.umich.edu/ % 7Egs265/society/pic5.gif ADDITIONAL FORMS OF WATER POLLUTIONAA A A A Three last signifiers of H2O pollution exist in the signifiers of crude oil, radioactive substances, and heat.A Petroleum frequently pollutes waterbodies in the signifier of oil, ensuing from oil spills.A The antecedently mentioned Exxon Valdez is an illustration of this type of H2O pollution.A These large-scale accidental discharges of crude oil are an of import cause of pollution along shore lines.A Besides the supertankers, off-shore boring operations contribute a big portion of pollution.A One estimation is that one ton of oil is spilled for every million dozenss of oil transported.A This is equal to about 0.0001 per centum. Radioactive substances are produced in the signifier of waste from atomic power workss, and from the industrial, medical, and scientific usage of radioactive materials.A Specific signifiers of waste are uranium and Th excavation and refining.A The last signifier of H2O pollution is heat.A Heat is a pollutant because increased temperatures result in the deceases of many aquatic organisms.A These lessenings in temperatures are caused when a discharge of chilling H2O by mills and power workss occurs. hypertext transfer protocol: //www.umich.edu/ % 7Egs265/society/image5BI.JPGDemonstrators Protest Drilling Oil pollution is a turning job, peculiarly devestating to coastal wildlife.A Small measures of oil spread quickly across long distances to organize deathly oil slipperinesss. In this image, demonstrators with â€Å" oil-covered † plastic animate beings protest a possible boring undertaking in Key Largo, Florida. Whether or non inadvertent spills occur during the undertaking, its impact on the delicate Marine ecosystem of the coral reefs could be lay waste toing.Ahypertext transfer protocol: //www.umich.edu/ % 7Egs265/society/imageKUS.JPGOil Spill Clean-up Workers use particular cyberspaces to clean up a California beach after an oil oiler spill. Tanker spills are an increasing environmental job because one time oil has spilled, it is virtually impossible to wholly take or incorporate it. Even little sums spread quickly across big countries of H2O. Because oil and H2O do non blend, the oil floats on the H2O and so washes up on wide sweeps of shoreline. Attempts to chemically handle or drop the oil may farther interrupt Marine and beach ecosystems. Types of H2O pollution Water pollution can come from a figure of different beginnings. If the pollution comes from a individual beginning, such as an oil spill, it is called point-source pollution. If the pollution comes from many beginnings, it is called nonpoint-source pollution. Most types of pollution affect the immediate country environing the beginning. Sometimes the pollution may impact the environment 100s of stat mis off from the beginning, such as atomic waste, this is called transboundary pollution. Surface Waterss are the natural H2O resources of the Earth. They are found on the outside of the Earth ‘s crust and include: Oceans Rivers Lakes These Waterss can go polluted in a figure of ways, and this is called surface H2O pollution. Microbiological H2O pollution is normally a natural signifier of H2O pollution caused by micro-organisms. Many types of micro-organisms live in H2O and cause fish, land animate beings and worlds to go ill. Microorganisms such as: Bacterias Viruss Protozoa Serious diseases such as cholera come from micro-organisms that live in H2O. These diseases normally affect the wellness of people in poorer states, as they do non hold the installations to handle contaminated H2O. Foods are indispensable for works growing and development. Many foods are found in effluent and fertilizers, and these can do extra weed and algae growing if big concentrations end up in H2O. This can pollute imbibing H2O and geta filters. This can be damaging to other aquatic beings as the algae usage up the O in the H2O, go forthing none for the surrounding marine life. Some pollutants do non fade out in H2O as their molecules are excessively large to blend between the H2O molecules. This stuff is called particulate affair and can frequently be a cause of H2O pollution. The suspended atoms finally settle and do a thick silt at the underside. This is harmful to marine life that lives on the floor of rivers or lakes. Biodegradable substances are frequently suspended in H2O and can do jobs by increasing the sum of anaerobiotic microorganisms nowadays. Toxic chemicals suspended in H2O can be harmful to the development and endurance of aquatic life. Causes Domestic families, industrial and agricultural patterns produce effluent that can do pollution of many lakes and rivers. Sewage is the term used for effluent that frequently contains fecal matters, urine and laundry waste. There are one million millions of people on Earth, so treating sewerage is a large precedence. Sewage disposal is a major job in developing states as many people in these countries do n't hold entree to healthful conditions and clean H2O. Untreated sewerage H2O in such countries can pollute the environment and cause diseases such as diarrhea. Sewage in developed states is carried off from the place rapidly and hygienically through sewerage pipes. Sewage is treated in H2O intervention workss and the waste is frequently disposed into the sea. Sewage is chiefly biodegradable and most of it is broken down in the environment. In developed states, sewerage frequently causes jobs when people flush chemical and pharmaceutical substances down the lavatory. When people are sick, sewerage frequently carries harmful viruses and bacteriums into the environment doing wellness jobs Industry is a immense beginning of H2O pollution, it produces pollutants that are highly harmful to people and the environment. Many industrial installations use fresh water to transport away waste from the works and into rivers, lakes and oceans. Pollutants from industrial beginnings include: Asbestos – This pollutant is a serious wellness jeopardy and carcinogenic. Asbestos fibres can be inhaled and do unwellnesss such as asbestosis, mesothelioma, lung malignant neoplastic disease, enteric malignant neoplastic disease and liver malignant neoplastic disease. Lead – This is a metallic component and can do wellness and environmental jobs. It is a non-biodegradable substance so is difficult to clean up one time the environment is contaminated. Lead is harmful to the wellness of many animate beings, including worlds, as it can suppress the action of bodily enzymes. Mercury – This is a metallic component and can do wellness and environmental jobs. It is a non-biodegradable substance so is difficult to clean up one time the environment is contaminated. Mercury is besides harmful to animal wellness as it can do unwellness through quicksilver toxic condition. Nitrates – The increased usage of fertilizers agencies that nitrates are more frequently being washed from the dirt and into rivers and lakes. This can do eutrophication, which can be really debatable to marine environments. Phosphates – The increased usage of fertilizers agencies that phosphates are more frequently being washed from the dirt and into rivers and lakes. This can do eutrophication, which can be really debatable to marine environments. Sulphur – This is a non-metallic substance that is harmful for marine life. Oils – Oil does non fade out in H2O, alternatively it forms a thick bed on the H2O surface. This can halt Marine workss having adequate visible radiation for photosynthesis. It is besides harmful for fish and marine birds. Petrochemicals – This is formed from gas or gasoline and can be toxic to marine life. Oceans are polluted by oil on a day-to-day footing from oil spills, everyday transportation, run-offs and dumping. Oil spills make up approximately 12 % of the oil that enters the ocean. The remainder semen from transporting travel, drains and dumping. An oil spill from a oiler is a terrible job because there is such a immense measure of oil being spilt into one topographic point. Oil spills cause a really localized job but can be ruinous to local marine wildlife such as fish, birds and sea otters. Oil can non fade out in H2O and forms a thick sludge in the H2O. This suffocates fish, gets caught in the plumes of Marine birds halting them from winging and blocks visible radiation from photosynthetic aquatic workss. Nuclear waste is produced from industrial, medical and scientific procedures that use radioactive stuff. Nuclear waste can hold damaging effects on Marine home grounds. Nuclear waste comes from a figure of beginnings: Operationss conducted by atomic power Stationss produce radioactive waste. Nuclear-fuel reprocessing workss in northern Europe are the biggest beginnings of semisynthetic atomic waste in the environing ocean. Radioactive hints from these workss have been found as far off as Greenland. Mining and refinement of U and Th are besides causes of marine atomic waste. Waste is besides produced in the atomic fuel rhythm which is used in many industrial, medical and scientific procedures. Eutrophication is when the environment becomes enriched with foods. This can be a job in marine home grounds such as lakes as it can do algal blooms. Fertilizers are frequently used in agriculture, sometimes these fertilizers run-off into nearby H2O doing an addition in alimentary degrees. This causes phytoplankton to turn and reproduce more quickly, ensuing in algal blooms. This bloom of algae disrupts normal ecosystem operation and causes many jobs. The algae may utilize up all the O in the H2O, go forthing none for other marine life. This consequences in the decease of many aquatic beings such as fish, which need the O in the H2O to populate. The bloom of algae may besides barricade sunshine from photosynthetic Marine workss under the H2O surface. Some algae even produce toxins that are harmful to higher signifiers of life. This can do jobs along the nutrient concatenation and impact any animate being that feeds on them.AAA CLASSIFYING WATER POLLUTIONAAA A A The major beginnings of H2O pollution can be classified as municipal, industrial, and agricultural.A Municipal H2O pollution consists of waste H2O from places and commercial establishments.A For many old ages, the chief end of handling municipal effluent was merely to cut down its content of suspended solids, oxygen-demanding stuffs, dissolved inorganic compounds, and harmful bacteria.A In recent old ages, nevertheless, more emphasis has been placed on bettering agencies of disposal of the solid residues from the municipal intervention processes.A The basic methods of handling municipal effluent autumn into three phases: primary intervention, including grit remotion, showing, grinding, and deposit ; secondary intervention, which entails oxidization of dissolved organic affair by agencies of utilizing biologically active sludge, which is so filtered off ; and third intervention, in which advanced biological methods of N remotion and chemical and physical methods such as farinaceous filtration and activated C soaking up are employed.A The handling and disposal of solid residues can history for 25 to 50 per centum of the capital and operational costs of a intervention plant.A The features of industrial waste Waterss can differ well both within and among industries.A The impact of industrial discharges depends non merely on their corporate features, such as biochemical O demand and the sum of suspended solids, but besides on their content of specific inorganic and organic substances. Three options are available in commanding industrial wastewater.A Control can take topographic point at the point of coevals in the works ; effluent can be pretreated for discharge to municipal intervention beginnings ; or effluent can be treated wholly at the works and either reused or discharged straight into having Waterss. hypertext transfer protocol: //www.umich.edu/ % 7Egs265/society/image90K.JPGWastewater Treatment Natural sewerage includes waste from sinks, lavatories, and industrial procedures. Treatment of the sewerage is required before it can be safely buried, used, or released back into local H2O systems. In a intervention works, the waste is passed through a series of screens, Chamberss, and chemical procedures to cut down its majority and toxicity. The three general stages of intervention are primary, secondary, and third. During primary intervention, a big per centum of the suspended solids and inorganic stuff is removed from the sewerage. The focal point of secondary intervention is cut downing organic stuff by speed uping natural biological procedures. Third intervention is necessary when the H2O will be reused ; 99 per centum of solids are removed and assorted chemical procedures are used to guarantee the H2O is as free from dross as possible.AAAA Agriculture, including commercial farm animal and domestic fowl agriculture, is the beginning of many organic and inorganic pollutants in surface Waterss and groundwater.A These contaminations include both deposit from eroding cropland and compounds of P and N that partially originate in animate being wastes and commercial fertilizers.A Animal wastes are high in O demanding stuff, N and P, and they frequently harbor infective organisms.A Wastes from commercial feeders are contained and disposed of on land ; their chief menace to natural Waterss, hence, is from overflow and leaching.A Control may affect settling basins for liquids, limited biological intervention in aerophilic or anaerobiotic lagunas, and a assortment of other methods.AALand WATERAA A A A Ninety-five per centum of all fresh H2O on Earth is ground water.A Ground H2O is found in natural stone formations.A These formations, called aquifers, are a critical natural resource with many uses.A Nationally, 53 % of the population relies on land H2O as a beginning of imbibing water.A In rural countries this figure is even higher.A Eighty one per centum of community H2O is dependent on land water.A Although the 1992 Section 305 ( B ) State Water Quality Reports indicate that, overall, the Nationis land H2O quality is good to excellent, many local countries have experienced important land H2O taint. Some illustrations are leaking belowground storage armored combat vehicles and municipal landfills.AA

A Significant Symbol in U.S. Contemporary History Essay

The statement above is just one of the several famous and affecting quotes from a former president of the United States of America, Dwight David Eisenhower. In this short and concise statement, his general principles, beliefs, and ideologies may be observed. This man with a huge heart for peace and humanity has been perceived by millions of Americans as a tough yet upright and high-profiled symbol of the government over the decades. However, this man who has been looked up to by the whole of America may be discovered to have humble beginnings—brought up from a simple family, he was an average boy who grew up to fulfill great dreams and great aspirations for the United States of America. On the 14th day of October in 1890, Dwight David Eisenhower, of David Eisenhower, a mechanic, and Ida Elizabeth Stover, a religious pacifist, was born (Kelly). As a child, he had to help his family and work with extra effort in order to suffice their everyday necessities. He was brought up in a simple yet very religious environment where people are exposed to real-life plain-living (The Eisenhower Foundation). He was born in Denison, Texas, but they eventually moved to Abilene in Kansas where he spent his early education in humble community schools. During this stage of his life, he was raised to be a fun loving youth who was fascinated with the Western American history and had always dreamed of getting into college and obtaining a degree which was considered an extravagance for families like his during that time (The Eisenhower Foundation). It was in Abilene where he had his early foundations, and it was also the place where he acquired his early values which eventually molded him to what people know him for—a noble and principled individual. Eisenhower joined the U. S. Military at West Point, New York on the 14th day of June in 1911 (â€Å"Dwight David Eisenhower†). Here, he was made into a principled and trained fighter which helped him to reach the rank of Second Lieutenant on September 1915. This was the start of his career in the military which have been a difficult battle and a rich learning experience as well for the fighter Eisenhower. In his entire military career, he has been blessed with the might of an ultimate warrior and a fair mind of a just leader. He has been part of several historical events such as McArthur’s venture to the Philippine Islands and the First and Second World War (â€Å"Dwight David Eisenhower†). Eventually, he was able to receive several recognitions due to his selfless and self-sacrificing service for the United States. On the 4th day of November in 1952, he was awarded with the greatest authority an American citizen could ever have; he became the 34th president of the Unites States of America (The Eisenhower Foundation). As it appears, the presidents of the world are given this special privilege of being immortalized through their works and principles. However, people may still question why a person such as Dwight Eisenhower should be remembered when all the other presidents seem to have done the same thing: to serve the country. As Eisenhower ventured in the greatest challenge to rule America, he was faced with serious challenges through the problems and obstacles in the political and economic sectors. The American values and the national security have been put in great risk by the powerful Europe and Asia which vexed the newly appointed president (Dwight D. Eisenhower Memorial Commission). Yet, despite these challenges, he maintained his aim on his strategies and game-plans on how he can win every battle that the country was facing at that time, such as the Cold War which he skillfully handled with utmost determination. In addition, as Eisenhower went through the most difficult and complex challenges as a president, he was able to maintain the balance in the national budget, the credibility of the country’s fiscal responsibility, and the public works that were significant in the lives of his people. He became remarkable in his efforts to establish sturdy innovations to the government as a whole and to his presidency in order to improve not just the country’s infrastructures but also the morale and dignity of the government (Dwight D. Eisenhower Memorial Commission). Eisenhower also had that incomparable heart for his people. He recognized the needs and the grievances of the less fortunate Americans which led him to establish agencies like the Department of Health and the Education and Welfare in 1953, while he also made improvements in the Social Security through increased benefits for millions of Americans (Dwight D. Eisenhower Memorial Commission). These were just some of his simple yet very significant efforts that will forever rest in Americans’ memories as he left them after a long heart ailment on the solemn day of March 28, 1969 uttering his last words, â€Å"I want to go; God take me. † (The Eisenhower Foundation). Among the many presidents that the United States has met, Dwight Eisenhower created a difference as inspired by his upbringing. It provided him enough courage and determination to reach greater heights. It may appear that the function and role of the American president is one of the hardest and most complicated in the world. Yet, to think that Eisenhower was able to go through it while maintaining a spiritual and fair heart is also commendable. A leader who does not allow his power and authority to rule his heart has also been attributed to Eisenhower by the people themselves. This is because while he was a man who was very well exposed to violence and wars, he spoke of peace and freedom from strife. Over his years of service, aside from literally fighting for his nation and helping to winning the wars, he was able to win the trust and confidence of his people through keeping his values and morale in his leadership strategy. Truly, it may be hard to find a perfect leader. Nevertheless, finding a leader like Eisenhower who had a sense of humor and integrity at the same time can also be one in a million chances. Considering the accounts of history which tell stories of Eisenhower as a hero of America, it may appear that he indeed played a significant role in the U. S. contemporary history. A man who led a simple life as a child and grew up to become the person with the highest authority in America but never abused his powers for wealth and personal interest is indeed worthy of remembrance. Indeed, no person must be judged according to his or her roots. Certainly, societal status does not in any way make a discerning factor to tell the worth and value of a person, because if there is any symbol and example who best represents a story of humble roots to the height of glory and honor in America, it would be undeniably someone like former President Dwight Eisenhower of the United States. Works Cited Bancroft, David G. â€Å"Dwight D. Eisenhower: 34th President (1953-1961). † USA Patriotism. 2002. 24 November 2008 . Dwight D. Eisenhower Memorial Commission. Why Memoralize Eisenhower?. 27 August 2008. 24 November 2008 . â€Å"Dwight David Eisenhower†. The Eisenhower Library Information Resources. September 2000. Ibiblio. 24 November 2008 . The Eisenhower Foundation. Biography: Dwight David Eisenhower October 14, 1890-March 28, 1969. 05 August 2008. Eisenhower. com. 24 November 2008 . Kelly, Martin. â€Å"Dwight D. Eisenhower- Thirty-Fourth President of the United States. † About. com: American History. 24 November 2008. .

The purpose and usefulness of standard audit report Essay

The purpose and usefulness of standard audit report - Essay Example Normally, audit reports presents the external review of the financial information of a company, conducted by an accounting firm and shareholders use it in assessing the financial health of a company. The Financial Reporting Council (FRC) in UK recommended for the enhancement of the responsibilities in financial reporting for the audit committees through publicizing of expanded reports. The auditor reporting entails coordinated structure that leverages the resources by IAASB (Boeckman et al. 2013, p. 76). A standard report summarizes an audit by the public accounting firm about the liquidity strength of a company. Auditing process entails comparison of the findings to internal audits to identify any discrepancies or errors involved therewith. When the audit is clean, standard audit report results. The standard audit report is the most used audit report, and it ensures that companies do not defraud the investors. Failure of the audit reports to conform to the acceptable standards in ac counting creates apprehension amongst the shareholders of the company (Boeckman et al. 2013, p. 77). The corporate finance statements and other investors express the concerns on the usefulness of standard audit reports (SAR). ... Three types of audit reports issued by auditors include the qualified, unqualified and adverse. Qualified opinions indicate the violation of accounting standards; adverse report shows shortcomings of the company; while unqualified opinion shows not-material misstatements. Audit reports are beneficial to a company. Standard audit report indicates issuance of non-qualified opinion based on the financial information of a company. This allows for extension of business by seeking outside investment to enhance future operations (Carcello 2012, p. 22). Furthermore, standard audit reports entail warnings. Adverse or qualified audit opinions subject the company to further audits resulting in negative goodwill to the outside investors. Companies also experience regulatory fines from the government agencies due to misleading the public on the financial health of the company. Standard audit reports also contain the expert insight. The accounting firms issue information to companies and auditors on acceptable auditing standards (Carcello 2012, p. 24). Standard Audit Report (SAR) SAR changed insignificantly over the last 60 years. Audit reports had not changed prior to 1988 Statements on Auditing Standards (SAS). There were significant changes made on the audit report by the financial statements. Professions tried making changes in 1965, and SAS incorporated introductory, opinion and scope changes in the third paragraph. The changes enhanced the usefulness of the audit report by giving a comprehensive definition of audit, as well as maintaining effective communication of management responsibilities, and the auditor in order to reduce SASs expectation gap. The main objective of SAR is to enhance credibility of the financial statements by the

My favorite type of Music - Instrumental Essay Example | Topics and Well Written Essays - 500 words

My favorite type of Music - Instrumental - Essay Example It especially taught that the authentic life is the one in which a person is true to his emotions and not shackled to traditions or the old way of living. It sought to create an aesthetic life rather than a grim and boring one. One of my favourite pieces by Chopin is the Nocturne. This starts off slowly with a melancholic air about it. The melody is quite pretty and delicate. It seems to come from within a deep well inside the composer. The low notes played by the left hard are largely the same, maintaining a certain stability or grounding, while the melody played by the right hand darts around with a much larger range. Sometimes the notes are very high on the keyboard only to fall away like a cascading waterfall down to a lower register. Although the music starts off quite sad, it appears to turn in the middle and to end on a high happy note. The lower notes fade out and the high notes dominate. I especially like this song because it feels like some tension has been resolved. It reminds me a bit of a sunset: at first you are sad to see the day go, but as the sun sinks down and the sky turns pink, you think, â€Å"Ah, the beauty of the sunset is worth the fact that it is now night and a bit cold out.† It is a fine song to relax to. Another favourite piece by Chopin is the Revolutionary Etude. This is a very strong, passionate piece. One of the stories I have heard about it was that Chopin was sick when there was a revolution in France. He was unable to participate because of his health, so was forced to put all of his feeling into this music. What he felt about the revolution went into the composition. It moves along at a tremendous pace, full of gusto and energy. There is a constant shift from soft notes to hard ones, marking it as a very dynamic piece. It requires a great deal of dexterity from its performer, especially to keep the constant swarm of

Basic Rhetorical Analysis Essay Example | Topics and Well Written Essays - 500 words - 2

Basic Rhetorical Analysis - Essay Example The document is also one that makes the instructions that it gives very clear. One of the greatest advantages of this document is the fact that it provides instructions in simple language that can be understood and accessed by a large number of people. This is a testimony to the intent of the California Environmental Protection Agency. Another of the advantages of the document is the fact that it organizes the information that it gives in a cogent and coherent manner. This can be seen in the framework that the booklet follows when making the content clear. Apart from this, the booklet also provides telephone numbers that can help solve the doubts that anybody may have regarding the use and disposal of the substance in question. This framework is used for very substance and is easy to read. It also provides all the information that a person would require for the purpose of dealing with the substance in question. There is however, a glitch in this booklet and the way in which it is written. The most easily accessible version (the one that is found online), is one that does not have any color to it, in the metaphoric sense. This is to say that while the elements are arranged cogently, the rest of the visual elements are not arranged in an exciting manner and is thus not eye-catching. However, in defense of the document, one may say that the process of prevention of accidents due to hazardous materials that are a part of people’s everyday lives may not require the most glamorous packaging that one is able to find. The booklet makes situations clear to the reader and makes it a very handy guide for the disasters that are likely to strike a person in her or his daily life. The document is a very usable one. This owes a lot to the handy introduction and the table of contents. Both these features enable an understanding of the uses that the document can be put

The origins of Industrial revolution Essay Example | Topics and Well Written Essays - 1000 words

The origins of Industrial revolution - Essay Example Perhaps the first pastoral of its kind, if taken negatively, it would mean destruction of Luke and Michael both to some extent, as Luke could not live a positive life away from it and Michael could not live without the landscape and his son. The unprecedented evolving of society was diminishing the pastoral lifestyle in the late 18th century, and while mountains and land remained the same, shepherds and their herd were disappearing from the landscape. It was too early for the land to go through a transition, although industrial revolution was taken root in cities and was spilling over to rural space. The story is of Michael, a highly principles shepherd who lived with his wife and son, and had to send the son away to pay a debt on land. Luke was expected to go to industrial city to earn money and return to his land. But Luke fails to do so, falling prey into pitfalls of industrialization and fails to return home with the result that both his doting parents die heartbroken. A real event made Wordsworth to narrate the story with simple pathos. The effect of nature on man is highly evident, manipulating and overpowering him, to such an extent that when he is planted away from familiar space, he would be out of depth like Luke. The effect is powerful, overbearing and unbroken. With the advent of industrial revolution, Nature was losing its precious part, animals, and the continuation of pastoral human life that tended them. But there were choices in front of present generation represented by Luke, who had to choose between land and faraway options and this choice never existed for earlier generations and here industrial revolution becomes an alternative provider. "Though the industrial and agrarian revolutions may not have changed the appearance of the Lake District, they claimed the peasants' children. And the break-up of the family was a change which Wordsworth felt must be resisted," John Purkis (1970, p.57. When Michael was written, Britain was already going through the initial days of modernity and was losing her local identities and ecological landscapes. Wordsworth was aware that rural communities were losing their tie with land and were drifting towards cities. . REALISM Realism that reproduced visuals as eye sees it, almost photographic came into prominence in mid 19th century and continued beyond it and still remains as one the most favored form of art. Gustave Courbet who is revered as almost the initiator of Realism was unpredictable in his art. His Burial at Omans is perhaps the most impressive piece connected with the ongoing industrial revolution of the time. http://www.artchive.com/artchive/C/courbet/ornans.jpg.html Industrial Revolution had ushered in a sense of irreverence, acute reality, hardship and indifference in the society. It had defied the conventional piety, respect, honour and devotion and more than that, it has negated the class differences and gender equality is more pronounced with women opting to work. This made women more visible in all places, places of trade, mourning, market, and travel. Industrial revolution had introduced a defiant commonality into the European societies and the above painting

Starbucks corporation Essay Example | Topics and Well Written Essays - 1500 words

Starbucks corporation - Essay Example In relation to the study the company which has been selected is Starbucks. Founded in 1971 and operating in more than 50 countries worldwide, Washington based Starbucks is the largest coffee retailer in the world at present. Starbucks has more than 16000 outlets all over the world. Out of these 16000 stores, nearly 12,000 stores are located across North America, South America, Europe, Middle East and the Pacific. In America, they have coffee outlets virtually in every corner. In other words, America is a saturated market for Starbucks now and they are looking for overseas markets as part of their expansion. In addition to coffee, Starbucks has other products such as tea, cake, cake filling leather goods, beverages, food, confections, coffee related machineries such as expresso machine, stainless steel coffee filters etc. Starbucks Corporation is a profitable organization, earning more than $600 million in 2004. The company generated revenue of more than $5000 million in the same year . Starbucks was one of the Fortune Top 100 Companies to Work For in 2005. In 1992, Starbucks listed on the stock exchange. Since then, its growth was phenomenal. Its annual average growth rate is 20% and profit growth is around 30%. Its share price marked a record 3500% increase, since its listing on the stock exchange. In other words, the market value of Starbucks shares from increased from $400 million to $15 billion recently. Starbucks is a reputed company with huge brand value and enormous resources. Its major strength is the ability to forecast market trends correctly and to make changes in business strategies. It should be noted that Starbucks was one among the few American companies which was unaffected by the recent recession. Starbucks top management team is extremely smarter in guiding the company even in unfavorable market conditions. Not even a single management decision went wrong for Starbucks in the last decade. Satisfied employees are another strength of Starbucks. à ¢â‚¬Å"They always treat the employees as their partners as mentioned earlier. Firm strategy, executive compensation and the performance of the firm can be divided into different streams and fit between firm strategy and compensation system is one among them† (Rajagopalan, n.d., p.4). Moreover, Starbucks is a socially committed company which gives something in return to the communities in which it operates. They are eager to recycle all industrial wastes produced by their activities. Smart business strategies, good suppliers, efficient leadership, talented employees are some other major strengths of Starbucks. Through the selling of coffee-related products such as brewing equipment and accessories, many consumers can enjoy high quality coffee at home rather than traveling out of their way. The equipment available includes Expresso machines, stainless steel coffee filters, and Starbucks cleaner and canisters. This is another example of how Starbucks is meeting the needs of curre nt customers as well as increasing its attractiveness to potential customers (Kembell, 2002). Weakness â€Å"Starbucks products are expensive compared to their competitor’s products (Starbucks Swot Analysis, n. d)†. One of the major weaknesses of Starbucks is the heavy pricing of their products. Starbucks never bothered to reduce the prices of their products irrespective of the market conditions. They do believe that for quality products, heavy pricing may not affect the customers very much. Starbucks is trying to implement the same price which they charge in America for coffee products, in international markets also. They are forgetting the fact that America is a wealthy country and the per capita income of Americans is more than that of the people in other countries. In other words, they are thinking that same product needs same pricing everywhere in the

Multiprocessor Systems and Applications Essay Example | Topics and Well Written Essays - 250 words

Multiprocessor Systems and Applications - Essay Example Computer programmer might have a difficult time studying all the instruments for all the computer processors. It might be difficult to correct difficulties that cross numerous CPU categories. Different processors require different resources and boundaries to the resources. The multiprocessing is the main complicated challenge because their CPU structures are in charge of allocating sources to opposing processes in an organized environment (Darlington and Ghanem, 1993). Applications may experience challenges when operating a multiprocessor processor because of practices they create which are acceptable only to one-processor systems. These challenges include the following. Thread Priorities, which can be solved by allowing access to information structures that reduce race situations. Memory ordering is another challenge, and can be reduced by petitioning the CPU clichà © into sections that can be accessed easily. During data processing, every processor processes information from parallel data calculations. The process shares a memory, which requires strategies such as locks and monitors to provide access to data. Finally, they all have concurrently performing procedures. Therefore, they require close monitoring of data (Darlington and Ghanem,

Auditing & Insurance services Essay Example | Topics and Well Written Essays - 4000 words

Auditing & Insurance services - Essay Example (c) As may also be noted from the Annual Reports for the year ended 30 June, 2009, the financial data was available in the form of Standard Statements, which effectively compare the Council’s budget against its actual performance, which provides ample scope for assessing how accounting practices are improving the efficacy of performance of the Council. (d) On the basis of its annual report for 2009, it may also be seen that the Council appears to be in a good financial position, because it is breaking even and shows revenues over and above budgeted amounts, which is noteworthy in a recessionary period where many public sector organizations all over the world have faced a strain on their resources and gone over their budgets. The impact of the recent recession is one of the important aspects to be studied in this report and this ability of the Council to balance the budget offers good scope for study. (e) There are an adequate number of related aspects, such as the incorporation of significant diversity into the council and operates a range of facilities which the citizens rate as satisfactory, all of which are funded through the Council budget, therefore the study of the financial management aspects is likely to be very helpful. An examination of the financial statements of the Council in order to ensure that they are presented fairly in terms of all material aspects and in accordance with generally accepted Australian Accounting Standards. The fees proposed to be charged for this service will be $60,000. The Council would like to have a second review of their internal audit in order to arrive at a comparative estimate. They do not currently employ an external auditor, but carry out a process of internal audit. We are suitably employed in their place to carry out an additional review audit. The client is a public sector enterprise that has

How to Mend a Broken Heart Essay Example for Free

How to Mend a Broken Heart Essay When you get a broken heart, you have to mend your heart. Although you feel sad and don’t like to do anything, you are always cry, always thinking about someone as you love to and almost the time, you would like to be alone. But it’s not really good because something, that make you get better is going outside to open your mind, For example. First, you should go outside to see your friends because the friend will always be helpful to you, for example. They will be consultant to get you feel better and they will invite you to the party, it can help you to forget the sadness. So when you feel sad, one of all to get you better is your friends. Second, you should go outside to play the activities. Such as, exercise and play sports. These can make your body to be strong and your heart too because when you do this, you feel tried and then you don’t think much anymore. Finally, you should go to travel. Traveling can help you much because you will see something that never see and you will see or talk with someone who never know. Maybe it can make you open your mind because traveling makes you to meet new things and then you will forget the sadness. The opening your mind is the best way to help you from sadness. It’s one way to mend you a broken heart. But moreover this is you have to make your heart to be strong by yourself.

Chemistry Design Prac Essay Example for Free

Chemistry Design Prac Essay Investigate one chemistry related factor on the deflection of the liquid flow in the presence of a charged rod Research question How will the amount of time spent rubbing a glass rod affect the angle of deflection of flowing water in the presence of the charged glass rod? Background Research Static electricity is formed in contact with two objects, where one object gains electrons from another, resulting in one object having a positive charge while the other having a negative charge. Some materials tend to lose or gain electrons during contact with other objects. Materials with electrons bonded to it weakly, tend to lose electrons while materials with fewer electrons on the outer shell tend to gain electrons. Therefore, when an object is imbalanced of a positive or negative charge, it has static electricity. Polarity is the separation of electric charges, caused when electrons are not equally shared in a molecule. This is caused when some atoms in the molecule have a higher electronegativity than others, causing more electrons to be attracted to it, leaving one side of the molecule more negative than the other. An element or molecule with an electro negativity value of 0.5+ is considered to be polar. When a polar liquid such as water is flowing in a presence of a charged rod, the liquid tend to bend towards the rod. This is because the rod will either be positively or negatively charged, and the dipoles of the polar molecule will be attracted to the charged rod. The charge on the rod is determined by the material which is used to rub against it, however, it does not matter whether the rod is positively or negatively charged because either way, the opposite dipoles of the polar molecule will be attracted towards it, causing the flow of the liquid to bend towards the charged rod. Defining Independent and Dependent Variables Independent The amount of time rubbing the glass rod with a piece of silk. 10 seconds 20 seconds 30 seconds 40 seconds 50 seconds 60 seconds Dependent The angle of deflection of the flowing water will be measured with grid paper with a smallest increment of 1mm. A line will be drawn on the grid paper from the point where the glass rod was places to the point where the water was deflected. A protractor with a smallest increment of 0.5 degrees will be used to calculate the angle of deflection of the water. Controlling Variables Table 1 Variables and Method of control Type Variable Method of Control Controlled The rate of the flow of water Adjust the burette to deliver the smallest stream of water possible but without being discontinuous. The water will be kept flowing at the same rate, throughout the experiment. The glass rod The same glass rod with a diameter of 1cm will be used throughout the experiment. Pressure when rubbing the glass rod Use the same person to rub the glass rod against the silk, applying the same pressure every time. Placement of the glass rod A line will be marked on the grid paper so the glass rod will be placed at the exact point and the exact angle to the flowing water every time. Placement of the grid paper The grid paper will be sticky taped to the burette and placed as close as possible to the flowing water. The same grid paper will be used and left at the same position throughout the experiment. Weather conditions The experiment will be conducted in a room with all windows closed and air conditioning switched off to reduce effects atmospheric effects on the angle of deflection of the water. Stopwatch The one person will be using the same stopwatch every time to reduce systematic errors. Material The same piece of silk cloth (20 cm in length, 15cm in width) will be used throughout the experiment The experimenters The same two people, (person with stopwatch and person controlling the glass rod) will conduct the experiment to keep random errors in measurements and readings consistent. Materials and Equipments List: 50 mL Burette 20cm x 15cm silk cloth 1cm diameter glass rod Distilled water 200 mL Beaker A4 Grid paper with increments of 1mm Protractor with increments of 0.5 degrees Retort Stand clamp Pen Ruler Sticky tape Stop watch Method 1. Attach the clamp to the retort stand. 2. Fill the burette with distilled water to approx 1cm from the top and attach it to the clamp 3. Draw a straight line on the grid paper with a ruler and sticky tape it to the bottom of the burette, lining up the line on the paper exactly with the flow of the water coming out of the burette. 4. Also Draw a line 90 degrees towards the line if the flowing water but stopping at 0.5 cm from the line. This line will be where the charged glass rod will be placed 5. Also mark the origin (the tip of the burette, where the water comes out) on the grid paper 6. Place the 200 mL beaker under the burette and let the water run down 7. Start the timer on the stopwatch and simultaneously, begin rubbing the glass rod against the piece of silk 8. Stop the stop watch at 10 seconds and immediately place the charged rod as close as possible to the line drawn on the grid paper 9. Mark the angle of deflection of the water on the grid paper 10. Wait 1 minute until the rod is completely uncharged 11. Repeat steps 6 9 12. Repeat the experiment from steps 6 10, changing the time rubbing the glass rod against the silk cloth by 20, 30, 40, 50 and 60 seconds. 13. Remove the grid paper and line up all the points of the deflected water to the origin 14. Measure the angles with a protractor and record the results into the table below 15. Pack up the experiment Table 2 Raw data table Time charging the glass rod Angle of deflection of water Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 Average 10 seconds 20 seconds 30 seconds 40 seconds 50 seconds 60 seconds Table 3 Risks involved in the experiment and safety precautions to reduce the risks Risk Safety Precaution Action to take The burette is very long and is made of glass and can be broken easily Hold the burette with two hands and always watch for obstacles when carrying around the lab. Wear closed in shoes, lab coat and safety glasses in case the burette breaks. Carefully pick up the large pieces of broken glass one by one and throw in the glass bin. Use a brush to sweep all the small bits into the bin. Make sure there is no remaining broken glass in the lab. Bibliography 1. Columbia University Press (1978-1979). New Illustrated Columbia Encyclopaedia 2. Neuss, Geoffrey (2007). Chemistry Course Companion. Oxford: Oxford University Press. 3. http://books.google.com.au/books?id=nkwM28diKF4Cpg=PT109lpg=PT109dq=deflection+charged+rodsource=blots=dk2TPy7IOfsig=g-MDZP6Q5kDsur57EIejpgJ54bghl=enei=48FrSp2bFIzusQOsy72WBQsa=Xoi=book_resultct=resultresnum=2 4. Department of Physics and Physical Science, University of Nebrasky, Kearney Falling Water http://rip.physics.unk.edu/CyberTextBook/fallingwater/ 5. http://books.google.com.au/books?id=nkwM28diKF4Cpg=PT109lpg=PT109dq=charged+rod+deflect+watersource=blots=dk2TQr4PPgsig=iwM-1qHxsAtaF9XoGZ1Mw9UCn6ghl=enei=OStsSqjFIo6qtgOT16WWBQsa=Xoi=book_resultct=resultresnum=3

The Vision Mission Values Management Essay

The Vision Mission Values Management Essay From the very beginning Sam Walton used the strategy still used by the corporation he founded; a wide variety of low priced goods, more availability by later store hours, buying goods in large quantities from the lowest priced wholesaler and passing on the savings to his customers. With low prices came large sales volume and that allowed him to purchase even cheaper goods from his suppliers. Sam Walton had great distribution methods as well. He built his stores near distribution centers so that items could be delivered quickly, usually within 24 hours. Sam Walton was more than Everyday Low Prices and distribution that catapulted the company to the top. Show More Show Less Walmarts mission today is still, save money, live better this sums up their primary goal, and gives a clue as to who the target market could be. Walmarts intention is to provide the lowest prices. Their customer base is the low income, and lower middle class that seek low prices. Walmart is found in almost every city in the United States, and more specifically in rural and suburban areas. Walmart uses alot of research to locate areas to open new stores, and even more to know what to stock them with. Its difficult to discuss, Vision, Mission and Values without understanding with clarity what the 3 stand for. Vision: The difference that the business wants to make. What will make it better than the rest of the other companies. Mission: How do we plan on carrying this work out; this is the way we plan to do things. Values: This is the nitty gritty; the walk to the talk. The Wal-Mart Vision statement states that The vision of the Global Ethics Office is to support ownership of Wal-Marts ethical culture to all stakeholders globally. Since the first store opened 50 years ago, the store has worked toward making a difference in people lives. The Founder of the company, Sam Walton believed that the service his customers received was very important. Sam Walton shared his vision with his employees and made them accountable for the way his first stores were operated; and later his other stores as well. Mr. Walton assigned greeters at the store entrances, and had them learn customers names. He lowered prices, and was committed to his customers even when his competitors thought that was a sure way to fail. Walmarts Mission is to improve the life of the community they serve through opportunities in employment, volunteer opportunities of its employees, cash or grants, its mission is to improve and help the people of the communities they are in. Globally, Walmart and the Walmart Foundation gave more than $958 million in cash and in-kind contributions during fiscal year ending Jan. 31, 2012.( Walmart Foundation). Three basic Values guide Wal-Mart employees: Respect for the Individual, is about valuing workplace diversity, everyone is a valued employee, and co-worker. Customers are greeted, and treated with respect. Sam Walton believed in creating an environment that is open and inclusive of all personnel and customers; and treating all people respectfully. In 2012 WalMart operates stores in 27 countries and under 69 different names. Service to Customers. Customer service comes before and after a sale; that includes prices that are affordable, and lower than competitors, and finally, Strive for Excellence; excellence doesnt mean being perfect. Striving for Excellence does mean doing the best job in all that you do, and to do it over and over again, as many times as it takes to get it right. Organization Business: Products and Services Traded on the New York Stock Exchange, Walmart is a corporation. The official name of the company is Wal-Mart Stores, Inc. (http://www.walmart.com/catalog/catalog.) Wal-Mart sells everything! Walmart Supercenters are warehouse size buildings, with sizes varying from 98,000 to 261,000 square feet, with an average of about 197,000 square feet (Walmart Annual Report, 2012) These stores stock everything: its a full-service supermarket with a meat dept., bakery, delicatessen, frozen foods, dairy products, produce, seafood and pharmacy; electronics, automotive, houseware, cosmetics, toys, garden centers, one hour photo processing lab; additionally some have fuel pumps in the parking lot. Some Walmarts are equipped with automotive service departments, garden centers, optical center, portrait studio, and numerous alcove shops, such as cellular phone stores, hair and nail salons, local bank branches, and fast food outlets, in the El Paso stores it is Mc Donalds (Longo, 2007) Products, Services and Initiatives requiring HR support. When Sam Walton opened the door in 1962 to the first Walmart, it was operated under a 3 basic belief code: respect for the individual, service to the customer and striving for excellence. Things havent changed much, the Walmart corporation still uses these vvalues; and continues to improve on them; always looking to improve the service to their customers and each other on a daily basis (http://careers.walmart.com/company-beliefs-and-values/). Walmarts open door policy, and open communication is what is credited with the success that Walmart has experienced when dealing with its 2.2 million associates and customer needs (http://careers.walmart.com/hr-benefits ) Walmart employees know they can openly discuss concerns with the management team. Wal-Mart Stores, with 2.2 million employees, tops the first published list of the worlds 500 largest corporate employers (http://www.myglobalcareer.com/). The Human Resource department at Walmart uses the strategy of fitting the employee to the best suitable job to fit the associates cognitive ability, and interests. (Chuck Russell, 2003). Its very important that they hire the best suited person for the job as mistakes can cost large sums of money! According to Dr. Pierre Mornell, if you make a mistake in hiring, and recognize and fix the mistake within six months, the cost of replacing that employee is two and one-half times the persons annual salary. ( Mornell, 2003). Training and development doesnt stop when the associate is hired, it isnt a one time thing, it continues on during the career of the associate, its meant to improve and empower the employee during his service at Walmart. Employees are told the history about the making of Walmart, and shows the roles and responsibilities of the employee, and those of support staff. After the initial orientation every department has its own training to strengthen the individual strengths, and chart career paths. All these initiatives are aimed at making employees stay within the organization more favorable. This empowers the employees and gives them the incentive to remain within the company. (Sullivan and Zaino, 2005). Walmart offers many training and development opportunities.It isnt unusual for a company to train an employee upon hiring, and nevr retrain, or continue to train an employee; but that isnt the case at Walmart. Walmart considers training as part of their regular work environment, this company invests a lot of time in maintaing a ongoing training program for employees. The purpose of the continuous training is to assist associates in maintaining, and or obtaining the needed skills to prepare for climbing the corporate ladder. Walmart likes to hire from within the company, as they like people already educated in their corporate culture. Leaders Out in Front is what Walmart calls the program that places the associate in charge of their own portfolio. This program also places the training in the first line of contact with the associates, the Assistant managers, Market manager, Store managers, and Co-managers, it is believed in the Walmart culture that associates having training with the first line of contact they are continuously training, and strengthening their skills. In 2007, Walmart started a program called Stores of Learning. In this program they use virtual classrooms to show chosen employees about the most effective methods of service delivery. Training and development isnt a only new employee training, its an ongoing event at Walmart. Its a very important part of an associates life (Career Development, 2010). Walmart uses skill assessments to determine, and improve their employee labor, and knowledge of their job skills. The company has instituted a program known as the Associate Investment model where supervisors evaluate employee competencies. This methods of employee assessment is particularly accurate owing to the fact that it allows the assessment of the evaluation process. This means that in case evaluation was done poorly, the company can detect it and makes their employees more prepared for future eventualities. (King, 2006) The company vigorously trains the employees, this helps Walmart to know that the employee is well trained in his job function and knows all the components of his job. Part one of the process is called on boarding. Since the employee must know his job, and all job functions, this can also be called the information phase. The next step is called the fundamental track phase. During this phase the employee is expected to know and understand the responsibilities associated within the scope of his job. Walmart hopes that this information helps the employee to better understand the function of his job and well as build a foundation from which to grow. The third phase of the program is called advanced track phase. In this area employees are taught how to plan their careers. For Walmart this is the portion of the training that guarantees that employees are aware, and knowledgeable in all the steps needed to prepare them for them to get to become promotable, and, or transferable to different positions within the company. Associates are urged to assess their own skills, and opportunities within Walmart,and to guage if they are tracking with the needed job criteria. The above program instructs employees on resume writing, interviewing skills, career planning, and being pro-active in seeking job opportunities within the company. Sam Walton liked to promote people within the Walmart family before seeking outside candidate, and today the same idea still functions within the Walmart culture, promote from within! The training, available through the Human Resource Department is meant to have a readily available pool of talent from the employees. Walmarts executives believe that while other retailers outsource a large part of their production process, Walmart wants to keep talent from within their company to fill vacancies as they arise. The fact that the company has leadership programs for their managers, supervisors, and line staff is proof that they are commited to assisting the employee develop, grow, and remain productive within the Walmart family. The companys Vice presidents feel that the people who have paid their dues, done the job, and prepared should be the ones getting the promotions within the company (Marquez, 2005). It is estimated that the human resource department at Walmart spends a large amount of time in the training, and maintaining, as well as preparing employees to embrace the best opportunity that comes their way. Since Walmart is worldwide they also believe that they are successful because of the consistent manner in which the associates are trained worldwide. Walmarts Human Resource Department has been working on preparing employees to work worldwide, in any environment by preparing them with the correct language, customs, and corporate requirements need to be a success in that area. Because Walmart wants to keep its competitive edge always sharp they also spend thousands of dollars in training their Human Resource Department in the latest hiring, and training practices in any country where they operate. The Walmart corporation does not consider training for any employee to be just an internal issue. They educate themselves in what other companies are doing to make them successful.(Walmart, 2008) Organization Markets Save Money. Live Better. This is the core of what Walmarts Marketing department uses to communicate to its customers every day. The yellow, happy smiling face is what Walmart uses to tell people about its lower prices. Marketing communication is a very important function of marketing. The product and services offered at Walmart would mean nothing if it werent communicating it through various media: collateral, advertisements, internet, packaging, printed media, displays, and logos to name a few. The ultimate goal of marketing communications is to make sure that the shopping population thinks of Walmart as the best place to shop, the place where they will save money, and have a better life because of it. ( more here)..> Organizational Core Competancies A core competency simply stated is what a company does best. For Wal-Mart that means lowering its operating costs, selling at a low price and still making a profit. Wal-Mart is a company that has taken what it does best, which is to deliver products at the lowest possible price, and incorporates it into their vision Low prices. Live better, and made it its competitive edge. Walmarts culture of hiring hardworking, and diligent, customer service oriented employees has paid off for the company. The founder, Sam Walton called his employees associates, and treated them like partners; thus making them feel like they were valued and wanted. Walton belied in his associates input, and valued what they had to say about improvements, and how to make the store better: additionally, he wanted his customers to know that no matter where his store was the customer would always receive the lowest prices and top notch customer service. . Low Cost Operations. Wal-Mart focus has always been on small rural towns. In 1962, the first store was in Rogers, Arkansas, and even then it cut prices so low, and drew customers away from its competitors; the trend to do the same has continued throughout the last 50 years; and in fact this is their mission statement in practice. As the US economy goes into slumps people look for lower, better prices, and Walmart has always been there to rescue the bargain shopper. Â   Distribution. Walmart has a total of 42 regional distribution centers, and 1 transportation office in every one. Each distribution center is over one million square feet. The distribution centers handle a total of about 6,500 tractors with 55,000 trailers. These vehicles moved more than 5.5 billion cases of merchandise last year. There are also specific distribution centers for Sams clubs as well for groceries, jewelry, pharmaceuticals. The Walmart online also have their own distribution centers. They are all located within a 250 mile radius of the stores they service, and most are open 24/7. The trucks deliver their loads, and most return within the same day, to start the process again the next day.( http://careers.walmart.com/distribution-and-transportation-opportunities) Strategic Planning for Organization and H.R. involvement. Charles Holley, Wal-Mart Stores, Inc. executive vice president and CFO stated at the shareholders meeting in November, 2011. Our business model is built on our promise that Walmart customers can count on us to deliver low prices every day across a broad assortment, Holley explained. This in turn leads to customer loyalty and higher sales. These growth and leverage initiatives will contribute to our strong earnings growth. (Edgell Communications, 2011) In May, 2011, Wal-Mart President and CEO Mike Duke told its share holders that the next step for Walmart was to expand globally and market to the next generation customer. He also outlined a five-point program at the shareholders annual meeting that would help sell more products online and abroad, but keep cost down. Hoping to tap into those that carry smart phones and spend time on social media , his 5 point priority plan includes: Growth by adding customers, opening new stores and acquiring other retailers. Keeping costs low and passing the savings to customers. Building a global Internet business. Developing talent, including a greater focus on women and minorities. Expanding the company sustainability effort Organizational Development and Change Initiatives Organizational Assesment Processes Human Capital Assesment Processes Training, Development and education Management and Leadership Supervisory Team Building Sales and Marketing Customer Service Safety, Quality and Technical Career Management and Development Programs Succession Planning Performance Management Restructuring of the Organization Job Enlargement, Job Enrichment Personnel Services Payroll HRIS/ HRIM Compensation and Benefits and Pay for Performance Evidence Legal Services : How Provided Other Services by Function: Financial Budgets and Contro;, Bonus systems, etc.

Men and Women Playing a non-traditional Sport for their Gender :: Sociology Essays Research Papers

The Social and Cultural Costs and Benefits of Men and Women Playing a non-traditional Sport for their Gender The lines that separate the sexes in sport have been historically rooted in society's way of thinking. Though these lines have lately begun to fade, they are still embedded in the attitudes of the majority of the public. Women and men alike have been and still seated in their respective sports without much room or access to cross that gender line. These limitations take various forms, such as the availability of opportunities that are given to those that wish to enter certain sports to the media portrayals of athletes crossing these gender boundaries. The costs and sacrifices for an aspiring athlete entering a non-traditional sport for their gender are sometimes overwhelming and detrimental to their sport career. These athletes often experience the frustration of finding training facilities catering to their gender. More so, the lack of financial support from family or even endorsements hinder athletes from pursuing the best training available. Aside from financial considerations, finding willing mentors and coaches willing to blind themselves from the sex of the athlete doesn't come as easy as for instance, Diana in Girlfight. Most importantly, the emotional support that is greatly important in the mental preparedness of an athlete is often not existent. Young children are often discouraged and not offered opportunities to pursue desired sports if they are considered gender bending. In Billy Elliot, though Billy has a real passion and talent for ballet, it is after much time that his family accepts it. Billy's father and brother, employed in mining, a traditionally masculine field, are initially disapproving of his aspirations mostly because of the stigmas on sexuality placed on male ballet dancers. These stigmas appear throughout numerous sports; women who body build or play rough sports like rugby or hockey are often looked at as butch and thus characterized as lesbians. In Pumping Iron II, Bev appears to have been in the best shape, but she is deemed too masculine to win a body building competition. Similarly, men who ice skate or are cheerleaders are considered feminine or gay. On the same note, the strengths of men in these non-traditionally male sports are often doubted; it is speculated that the male might be weak and cannot handle "manlier" sports. Even women who enter male dominated sports are considered to be too tender to play.

Out of Your Car, Off Your Horse :: Wendell Berry Out of Your Car, Off Your Horse Ess

Out of Your Car, Off Your Horse Wendell Berry in his essay Out of Your Car, Off Your Horse, lends favor to thinking globally is a bad idea. He endorses the idea of thinking locally. This encompasses beginning small at a local level and expanding out. The key element to his idea is a sustainable city; in this city individuals would buy from local farmers thus increasing the economy of farming. As farming expands there would be a need for more workers to do farming. In his explanation he sees this as spilling over to the city people and encouraging them to become more aware and become more agriculturally responsible. Berry states, â€Å"If you want to keep your local acts from destroying the globe you must think locally.† In Berry’s perspective you can’t have global thinking, or protect globally, if you are not acting on a local level. At first glimpse I am ready to dispute with Berry about not thinking globally. In all of my management course both at the collegiate level and on the job they all continually say to look at the big picture. All aspects of the problem should be considered and what the impact is on the overall system. I do disagree that global thinking will destroy our communities. I also find some of his sustainability ideas to be far reaching. When Berry refers to basically the city folk being forced to become agriculturally responsible, it is just hard to see someone working on Wall Street coming home in the evening to plow his fields. Even though I find those type of ideas far fetched I do agree that for â€Å"conservation† to become global it should start at the local level. If each individual would contribute within their own community the community would reap economic and environmental rewards. The best idea I can think of is recycling. At this point in time there is no feasible way to completely eradicate the need for landfills; the area used could be reduced. If every household and business would recycle the reduction of what goes to the landfill would be greatly reduced. I worked for about six months at a recycling cooperative. The job of the cooperative was to educate the public on recycling, market the recyclables, and look for ways to bring recycling firms into the communities. This was a very successful project. Several abandoned business buildings were utilized to collect the recyclables.

El Duche De Corum Est :: Papers

El Duche De Corum Est The poem Dulche et Decorum Est is about Wilfred Owen (a war poet) who describes in his own experiences, what the war was like. Verse one describes how the soldiers are returning to base camp. Owen uses a slow halting rhythm to suggest how much pain and misery the soldiers are encountering and to imitate how slow are walking. He does this by using punctuation. Verse one tells us a lot about the condition, both physically and mentally, of the men and it gives us an idea of the appalling conditions!. He uses similes such as, "Bent double, like hags"; this illustrates how many of the men fall ill. The poet's choice of vocabulary in verse one is very effective in portraying the state of the soldiers. He uses words such as sludge, trudge, and haunting to describe the harsh conditions of the battlefield. The rhythm in verse two suddenly increases, this displays the soldiers panic during the gas attack! Punctuation is used to create this faster rhythm, exclamation marks and short sentences suddenly speed up the pace. This gives the reader an image of the weary soldiers suddenly changing into panic-stricken men. It means that the reader feels that they are involved in what is happening! "Gas! Gas! Quick boys!" direct speech is used to create panic. Owen also uses words such as stumbling, floundering, and fumbling to describe the desperate actions of the dying man. The verbs such as yelling and drowning give the reader a feeling of chaos. "As under a green sea, I saw him drowning", this describes how the gas causes a thick green misty haze around the men. This is a useful phrase as it enables us to imagine what is happening and use our imagination. It also gives us a sense of how real it all is in his vivid descriptions. Owens guilt is suggested in the line, "In all my dreams before my helpless sight, He plunges at me, guttering, choking, drowning". The fact that he dreams about this

Race Car Aerodynamics

Race Car Aerodynamics Gregor Seljak April 8, 2008 1 Introduction First racing cars were primarily designed to achieve high top speeds and the main goal was to minimize the air drag. But at high speeds, cars developed lift forces, which a? ected their stability. In order to improve their stability and handling, engineers mounted inverted wings pro? les1 generating negative lift. First such cars were Opel’s rocket powered RAK1 and RAK2 in 1928. However, in Formula, wings were not used for another 30 years. Racing in this era 1930’s to 1960’s occured on tracks where the maximum speed could be attained over signi? ant distance, so development aimed on reducing drag and potencial of downforce had not been discovered until the late 1960’s. But since then, Formula 1 has led the way in innovative methods of generating downforce within ever more restrictive regulations. Figure 1: Opel’s rocket powered RAK2, with large side wings 2 Airfoils Airfoil can be de? nead as a shape of wing, as seen in cross-section. In order to describe an airfoil, we must de? ne the following terms(Figure 2) †¢ The mean camber line is a line drawn midway between the upper and lower surfaces. †¢ The leading and trailing edge are the most forward an rearward of the mean camber line. Compared to an aircraft 1 †¢ The chord line is a line connecing leading an trailing edge. †¢ The chord length is the distance from the leading to the trailing edge, measured along the chord line. †¢ The camber is the maximum distance between mean camber line and chord line. †¢ The thickness is the distance between the upper and lower surfaces. Figure 2: Airfoil nomenclature The amount of lift L produced by the airfoil, can be expressed in term of lift coe? cient CL 1 2 (1) L = V? SCL 2 where V? denotes the freestrem velocity, ?uid density and S the airfoil area. 2. 1 Flow over an airfoilProperties of an airfoil can be measured in a wind tunnel, where constantchord wing spannes the entire test section, from one sidewall to the other. In this conditions, the ? ow sees a wing without wing tips. Such wing is called in? nite wing and streches to in? nity along the span. Because the airfoil section is identical along the wing, the properties of the airfoil and the in? nite wing are identical. Therefore the ? ow over an airfoil can be described as a 2D incompressible inviscid ? ow over an in? nite wing. Lift per unit span L? generated by an arbitrary airfoil(or any other body) moving at speed V? through the ? ud with density and circulation ? is 2 given by Kutta-Joukowsky theorem L? = V? ? . (2) Circulation around an airfoil, can be calculated with the concept of a vortex sheet, which was ? rst introduced by Prandtl an his colleagues. Consider an airfoil of arbitrary shape and thickness as shown in Figure 3. Circulation can be distributed over the whole airfoil area with surface density(vortex sheet strength) d? /ds = ? (s), where ? (s) must satisfy Kutta condition ? (trailing edge) = 0 (3) Entire circulation is then given by ?= ? (s)ds , (4) where the integral is taken around the complete surface of the airfoil.However, there is no general solution for ? (s) for an airfoil of arbitrary shape and it must be found numericaly, but analytical solutions can be found with some aproximations. Figure 3: Simulation of an arbitrary airfoil by distributing a vortex sheet over the airfoil surface. 2. 2 Thin airfoil theory Here we discuss thin airfoil in freestream of velocity V? under small angle of attack ?. Camber and thickness are small in relation with chord length c. In such case, airfoil can be described with a single vortex sheet distributed over the camber line(Figure 4). Our goal is to calculate the variation of ? s), such that the chamber line becomes streamline and Kutta condition at trailing edge, ? (c) = 0, is satis? ed. 3 Figure 4: Thin airfoil approximation. Vortex sheet is distributed over the chamber line The velocity at any point in the ? ow is the sum of the uniform freestream velocity and velocity induced by the vortex sheet . In order the camber line to be a streamline, the component of velocity normal to the camber line must be zero at any point along the camber line. w ? (s) + V? ,n = 0 , (5) where w ? (s) is the component of velocity normal to the chamber line induced by the vortex sheet and V? n the component of the freestrem velocity normal to the camber line. Considering small angle of atack and de? ning ? (x) = dz/dx as the slope of the chamber line, V? ,n can be written as (Figure 5) V? ,n = V? ? ? dz dx (6) Because airfoil is very thin, we can make the approximation w ? (s) ? w (x) , (7) where w (x) denotes the component of velocity normal to the chord line and can be, using the Biot-Savart law, expressed as c w (x) = ? 0 ? (? )d? 2 ? (x ? ? ) (8) Substituting equations (6), (7) and (8) into (5) and considering Kutta condition, we obtain 1 2? c 0 ? (? )d? dz = V? ? ? x dx ? (c) = 0 undamental equations of thin airfoil theory. 4 (9) Figure 5: Determination of the component of freestrem velocity normal to the chamber line In order to satisfy this conditions , we ? rst transform our variables x and ? into c c x = (1 ? cos ? 0 ) (10) ? = (1 ? cos ? ) 2 2 and equation (9) becomes 1 2? ? 0 ? (? ) sin ? d? dz = V? ? ? cos ? ? cos ? 0 dx (11) with a solution that satis? es Kutta condition ? (? ) = 0 ? (? ) = 2V? A0 ? 1 + cos ? An sin(n? ) + sin ? n=1 (12) In order to ? nd coe? cients A0 and An , we substitute equation (12) into equation (11) and use the following trigonometric relations ? 0 sin(n? ) sin ? ? = cos(n? 0 ) cos ? ? cos ? 0 (13) ? sin(n? 0 ) cos(n? )d? = cos ? ? cos ? 0 sin ? 0 (14) ? 0 and ? nnaly obtain ? dz An cos(n? 0 ) = (? ? A0 ) + dx n=1 5 (15) This equation is in form of a Fourier cosine series expansion for the function dz/dx. Comparing it to the general form for the Fourier cosine expansion we obtain 1 ? dz A0 = ? ? d? 0 (16) ? 0 dx 2 ? dz cos(n? 0 )d? 0 (17) An = ? 0 dx The total circulation due to entire vortex sheet from leading to the trailing edge is c cc ? (? ) sin ? d? (18) ? (? )d? = ?= 20 0 Substituting equation (12) for ? (? ) into equation (18) and carrying out the integration, we obtain ? = cV? ? A0 + A1 (19) 2 hence the lift per unit span, given by Kutta-Joukowski is 2 L? = V? ? = c V? ? A0 + ? A1 2 (20) This equation leads to to the lift coe? cient in form cl = ? (2A0 + A1 ) = 2? ? + 1 ? ? 0 dz (cos(n? 0 ) ? 1)d? 0 dx (21) and lift slope dcL = 2? (22) d? Last two results are important. We can see, that lift coe? cient is function of the shape of the pro? le dz/dx and angle of attack ? , and that even symmetrical wing produces lift, when set under an angle of attack. Lift slope is constant, independently of the shape of the pro? le, while the zero lift angle lS ? ?L=0 = ? 1 ? 0 dz (cos(n? 0 ) ? 1)d? 0 dx (23) depends on the shape. The more highly chambered the airfoil, the larger is ? L=0 2. 3 Vi scid ? ow By now, we have studied the inviscid incompressible ? ow. But in real case, ? ow is viscous. It is time to compare our theoretical results with real one. In Figure 6, we can see variation of lift coe? cient with the angle of attack. 6 At low angles of attack cl varies linearly with ? , as predicted by the theory. However, at certain angle of attack, cl reaches it’s maximum value cl,max and starts to decrease. This is due to viscous e? ect of the ? uid (air). First, the ? w moves smoothly over the airfoil and is attached over most of the surface, but at certain value of ? seperates from the top surface, creating a wake of turbulent ? ow behind the airfoil, which results in drop in lift and increase in drag. Figure 6: Variation of lift coe? cient with the angle of atack. To increase lift of the airfoil, we must increase cl,max . As we have seen, the cl,max of the airfoil primarily depends on it’s shape. Airfoil’s shape can be changed with use of multiele ment ? aps at the trailing edge and slats at leading edge. They increase chamber of the airfoil and therefore its cl,max .The streamline pattern for the ? ow over such airfoil can be seen in Figure 7. 3 Finite wings Properies of airfoils are the same as the properties of a wing of in? nite span. However, all real wing are of ? nite span and the ? ow over ? nite wing is 3 dimensional. Because of higher pressure on the bottom surface of the wing, the ? ow tends to leak around the wing tips. This ? ow establishes a circulary motion that trails downstream of the wing. A trailing vortex is created at each wing tip. These wing-tip vortices induce a small downward component of air velocity, called downwash . It produces a local relative wind which is Figure 7: Flow over multielement airfoil. directed downward in the vicinity of the wing, which reduces the angle of attack that each section of the wing e? ectively sees ?ef f = ? ? ? i (24) and it creates a component of drag, de? ned as induc ed drag. 3. 1 Prandtl’s classical lifting-line theory The idea of lifting line theory, is to use two dimensional results, and correct them for the in? uence of the trailing vortex wake and its downwash. Let’s replace a ? nite wing of span b, with a bound vortex 2 extending from y = ? b/2 to y = b/2. But due to the Helmholtz’s theorem, a vortex ? ament can’t end in a ? uid. Therefore assume the vortex ? lament continues as two free vortices trailing downstream from the wing tips to in? nity(Figure 8). This vortex is due to it’s shape called horseshoe vortex. Downwash induced by such vortex, does not realistically simulate that of a ? nite wing, as it aproaches at wing tips. Instead of representing the wing by a single horseshoe vortex, Prandtl superimposed an in? nite number of horseshoe vortices, each with an in? nitesimally small strength d? , and with all the bound vortices coincident along a single line, called the lifting line.In this model, w e have a continious distribution of circulation ? (y ) along the lifting line with the value ? 0 at the origin. The two trailing vortices in single horseshoe vortex model, have now 2 A vortex bound to a ? xed location in ? ow 8 Figure 8: Replacement of the ? nite wing with single horseshoe vortex. Figure 9: Superposition of an in? nite number of horseshoe vortices along the lifting line. became a continious vortex sheet trailing downstream of the lifting line,and the total downstream velocity w , induced at the coordinate y0 by the entire trailing vortex sheet can be expressed as w (y 0 ) = ? 4? b/2 ?b/2 (d? /dy )dy y0 ? y (25) The induced angle of attack at the arbitrary spanwise location y0 is given by ? i (y0 ) = arctan ?w (y0 ) ?w (y0 ) = , V? V? (26) where we considered V? ? w (y0) and arctan(? ) ? ? for small values of ?. Now we can obtain an expression for the induced angle of attack in term of the circulation distribution along the wing ?i (y0) = ? 1 4? V? 9 b/2 ?b/2 (d? /dy )dy y0 ? y (27) Combining results cl = 2? (y0) V? (28) and cl = 2? [? ef f (y0 ) ? ?L=0 ] (29) for coe? cient of lift per unit span from thin airfoil theory, we obtain ? ef f = ?(y0 ) + ? L=0 ?V? c(y0 ) (30)Substituting equations (27) and (30) into (24), we ? nally obtain the fundamental equation of Prandtl’s lifting line theory. ? (y 0 ) = 1 ?(y0 ) + ? L=0 (y0 ) + ?V? c(y0 ) 4? V? b/2 ?b/2 (d? /dy )dy y0 ? y (31) Just as in thin airfoil theory, this integral equation can be solved by assuming a Fourier series representation for the distribution of vorticity N An sin n? ?(? ) = 2bV? (32) n=1 where we considered transormation y = (? b/2) cos ? , with 0 ? ? ? ? and coe? cients An must satisfy Equation (31). With such vorticity distribution, Equation (31) becomes ?(? 0 ) = N N 2b sin n? 0 nAn An sin n? 0 + ?L=0 (? 0 ) + ?c(? 0 ) n=1 sin ? 0 n=1 (33) The total lift distribution is obtained by integrating equation for lift distribution over the span L= b/2 ?b/2 V? ?(y )dy (34) C oe? cients of lift and induced drag3 , can be calculated via equations CL = and CD = 2 L = q? S V? S D 2 = q? S V? S 3 b/2 ?(y )dy (35) ?i (y )? (y )dy (36) ?b/2 b/2 ?b/2 Note the di? erence in nomenclature. For 2D bodies, coe? cients have been denoted with lowercase letters. In 3D case, we use capital letters 10 respecteviliy. Considering expressions (32) and (33), they can be written as CL = A1 ? AR (37) and 2 CL (1 + ? ) (38) ?AR here AR is aspect ratio of ? nite ? ng, de? ned as AR = b2 /S , and ? = N 2 2 (An /A ? 1) . Note that CL depends only on the leading coe? cient in Fourier series expansion and that ? ? 0. Therefore, the lowest induced drag will be produced by a wing where ? = 0, that is, n = 1. Such circulation distribution is given by ? (? ) = 2bV? A1 sin ? and is known as elliptical circulation distribution CD,i = 4 Ground e? ect The main di? erece between wing application in aviation and car racing is, that cars are in contact with the ground. Therefore, wing experien ces some additional e? ects due to ground proximity.Remember the wing tip vortices we mentioned at the beginning of the previous section. They do nothing but harm, as they increase drag and decrease lift at given angle of attack. When ?ying near to the ground, the ground partially blocks(Figure 10) the trailing vortices and decreases the amount of downwash generated by the wing. This reduction in downwash increases the e? ective angle of attack of the wing so that it creates more lift and less drag than it would otherwise. This e? ect is greater, the closer to the ground the wing operates. Figure 10: E? ect of the ground proximity on creation of the trailing vortices.Another way to create downforce is to create low pressure area underneath the car, so that the higher pressure above the car will apply a downward force. The area between car’s underbody and the ground, can be thougth as an example of Venturi nozzle. The Venturi e? ect may be derived from 11 a combination of Bern oulli’s principle and the equation of continuity. The ? uid velocity increases through the constriction to satisfy the equation of continuity, while it’s pressure decreases due to conservation of energy. The gain in kinetic energy is supplied by a drop in pressure.The main advantage of ground e? ect is, that it produces almost no drag. 5 Applications in car racing Now summarize what we have learned so far. The coe? cient of lift increases with increasing angle of attack. At some angle, ? ow seperates from the wing, which causes drop of lift coe? cient. With use of multidimensional ? aps, we increase chamber of the airfoil and thus maximum coe? cent of lift. In 3 dimensional case, vortices appear at wing tips. They reduce wing’s e? ciency and increase drag. The lowest drag can be achieved with elliptically shaped wing. Dimensions of the wing are also important.Wing with greater surface, produces more lift and wing with higher aspect ratio induces less air resista nce. In the next sections, we will see, how engineers used this principles at developing the main aerodynamical parts of racing cars. 5. 1 Rear wing First rear wing appeared in 1966, when Jim Hall equiped his Chaparral 2E with a rear wing. From then on, use of wings grew quickly. First wings were mounted high over the rear end of the car to operate in indisturbed ? ow. They were also mounted on pivots, so the driver was able to change the angle of attack during the ride. High mounted wings often broke o? uring the race and were therefore prohibited by FIA. In Formula 1, wings were ? rst introduced in 1968 at the Belgium grand prix, when Ferrari used full inverted rear wings, and Brabham did likewise, just one day after the Ferrari’s wings ? rst appeared. Modern rear wings produce approximately 30-35 % of the total downforce of the car. A typical con? guration(Figure) consists of two sets of airfoils connected to each other by the wing endplates. The most downforce is provided by the upper airfoil. To achieve the greatest possible lift coe? cient, it consists of multiple high aspect ratio elements, which prevent ? w separation. Angle of attack depends on circuit con? guration. On tracks with many turns, more downforce is needed, therefore the wing is set at higher angle of attack. Conversely, on tracks with long straights, wing has small angle attack, thus reducing air drag and allowing higher top speeds. Lower airfoil section ac12 Figure 11: Chapparal 2E (left) and Ferrari 312 (right). tually reduces the downforce produced by total rear wing, but it creates a low-pressure region just below the wing to help the di? user4 to create more downforce below the car. Ususally it consists of two elements.Another important part of rear wing are endplates . They provide a convenient way of mounting wings, but also have aerodynamic function. They reduce the 3D e? ect of the wing by preventing air leakage around the wing tips and thus formation of trailing vortices. An additional goal of the rear endplates is to help reduce the in? uence of up? ow from the rear wheels. The U-shaped cutout from the endplate further alleviates the development of trailing vortices. 5. 2 Front wing The front wing on the car produces about 1/3 of the car’s downforce and it has experienced more modi? ations than rear wing. It is the ? rst part of the car to meet the air mass, therefore, besides creating downforce, it’s main task is to e? ciently guide the air towards the body and rear of the car, as the turbulent ? ow impacts the e? ciency of the rear wing. Front wings appeared in Formula 1 just two weaks after the ? rst rear wings, on Lotus 49B. First front wings were quite simple with single rectangular airfoil with ? at vertical endplates to reduce wing tip vortices. First improvement appeared in 1971, with so-called Gurney ? ap. This is a ? at trailing edge ? p perpendicular to the chord and projects about 2% of the chord. It can improve the perfor mance of a simple airfoil to nearly the same level as a complex design. The same year, the concept of elliptical wing was applied. March equiped it’s 711 with elliptical front wing. Two years later Ferrari avoided wing-body interaction with wing mounted quite far ahead 4 See section 5. 3 13 Figure 12: Modern rear wing consists of upper(2) an lower(3) airfoil section mounted on endplates (1) with U-shaped cutout (4). from the body. Multi element wings were introduced in 1984 by McLaren.The angle of attack of the second element was allowed to be modi? ed so that the load applied on the front wing could be changed to balance the car according to the driver’s wishes. In 1990 Tyrell raised the nose of it’s 019 to increase the ? ow under the nose cone and improve ? ow conditions under the car. This concept avoids wing-body interaction and allows the front wing to operate in undisturbed ? ow. It also enlarges e? ective area of the wing. After Imola 1994, the FIA regula tions do not allow any chassis parts under a minimum ground height. This clearance is di? erent between the centre and the side of the car.Teams used this to curve front wing in the centre of the span and regain some of the lost ground e? ect. In 1998, regulations decreased the width of Formula 1 car, so the front wings overlapped the front wheels. This created unnecessary turbulence in front of the wheels and reducing aerodynamic e? ciency of the wing. With reducing wing’s span this could be avoided, but it would also decrease wing’s aspect ratio. Insted this, teams use wing tips to direct the air around the wheels. 14 Figure 13: Con? guration of modern front wing. Two element airfoil (1 & 2) is mounted under the nose of the car (5).Endplates (4) direct air around the wheels and curved area (4) under the nose increases wing’s e? ciency. 5. 3 Ground e? ect The second revolution in Formula 1 aerodynamics occurred about a decade after the ? rst, with the introucti on of the Lotus T78 in 1977. Lotus T78 and it’s further development, Lotus T79, were ? rst cars to use ground e? ect. The underbody took shape of inverted wing pro? le(Figure). The decreasing crosssectional area accelerated the air? ow and created low pressure underneath the car. The gap between the bottom of the sidepods and the ground was sealed with so-called sidepods. They helped to maintain 2D ? w characteristics that provide increased downforce and reduced drag, compared to a typical 3D wing. Skirts enabled very high cornering speeds and were prohibited by the rules, due to safety reasons and from 1983 onwards, the tehnical regulations in Formula 1 require the underbody panel between the wheels to be completely level. The ? ow wolume between the vehicle and the ground is strongly dependent on the car’s attitude relative to the ground. This correlation is illusrtated in Figure. Very small ground clearence results in positive lift, since there is almost no air? ow between the underbody and the ground. With in- 15Figure 14: Some historical milestones in front wing develpment. Lotus 49B, March 711, Ferrari 312 T2 and Tyrrell 019. Figure 15: Lotus T79 and sketch of it’s underbody creasing ground clearence the air? ow produces low pressures causing overall lift to be lowered to negative values and then to rise again as ground clearence continues to increase. This is due to the fact that the ? ow velocity under the car decreases as ground clearence increases. More downforce can be generated using a di? usor between the wheels at the rear of the car. The air enters the di? user in a low-pressure, high-velocity state after accelerating under the 16 ar. By gradually increasing the cross-sectional area of the di? user, the air gradually slows down and returns to its original free-stream speed and pressure. The di? user’s aim is to decelerate the air without it separating from the tunnel walls, which would cause a stall, reducing the down force and inducing a large drag force. By installing an inverted wing close to the di? user exit 5 it is possible to create a low-pressure area, which essentially sucks the air from the di? user. The di? user and wing combination permits a higher air mass ? ow rate through the di? user, thus resulting in higher downforce.Sharp edges on the vertical tunnel walls generate vortices from entrained air and help con? ne the air through the di? user and reduce the chance it will separate. Figure 16: Correlation between lift coe? cient and ground clearence(left) and di? user on Ferrari F430(right) Again Chaparral, showed completely new way to create downforce. The Chaparral 2J in 1969 used two rear fans to suck in air from under the car, thus creating low pressure under the car. Big advantage of this concept is, that downforce can be generated independently of the speed. Fans were also used in Formula 1. Brabham BT46 used a rear mounted fan driven o? he gearbox. It won it’s debut rac e in 1978, but was promptly banned by the governing body. Barge boards were ? rst seen in 1993 and their purpose is to smooth the air? ow around the car and into the radiator intakes. They are most commonly mounted between the front wheels and the sidepods (See Figure) . Their main purpose is to direct relatively clean air into the sidepods. Clean air is from the low section of the front wing where air? ow is fairly una? ected 5 See rear wing section 17 Figure 17: Two cars which used fans to create downforce. The Chaparral 2J â€Å"sucker car† (left) and Brabham BT46 â€Å"fan car† y the wing and far away from tires, which may throw stones and debris in to the radiator. Bargeboards also produce vortices, to seal the area between the sidepots and the surface. They work as a substitude for skirts. Figure 18: Bargeboards on McLaren MP4/8 6 Conclusion References [1] J. D. Anderson; Fundamentals of Aerodynamics 18 [2] Applied Aerodynamics: A Digital Textbook, http://www. de sktopaero. com/appliedaero/preface/welcome. html [3] W-H Hucho: Aerodynamics of Road Vehicles [4] Peter Wright: Formula 1 Technology [5] Milliken,Milliken: Race Car Vehicle Dynamics [6] F. Mortel: Cran? eld Team F1: The Front Wing 19