Saturday, March 14, 2020
A History of Camels in the US Army
A History of Camels in the US Army A plan by the U.S. Army to import camels in the 1850s and use them to travel through vast stretches of the Southwest seems like some comical legend that never could have happened. Yet it did. Camels were imported from the Middle East by a U.S. Navy ship and used in expeditions in Texas and California. And for a time the project was thought to hold enormous promise. The project to acquire camels was masterminded by Jefferson Davis, a powerful political figure in 1850s Washington who would later become the president of the Confederate States of America. Davis, serving as secretary of war in the cabinet of President Franklin Pierce, was not a stranger to scientific experiments, as he also served on the board of the Smithsonian Institution. And the use of camels in America appealed to Davis because the War Department had aà serious problem to solve. Following the end of the Mexican War, the United States acquired vast tracts of unexplored land in the Southwest. And there simply was no practical way to travel in the region. In present day Arizona and New Mexico there were virtually no roads. And going off any existing trails meant venturing into country with forbidding terrain ranging from deserts to mountains. Water and pasturage options for horses, mules, or oxen were non-existent or, at best, hard to locate. The camel, with its reputation for being able to survive in rough conditions, seemed to make scientific sense. And at least one officer in the U.S. Army had advocated for the use of camels during military campaigns against the Seminole tribe in Florida in the 1830s. Perhaps what made camels seem like a serious military option were reports from the Crimean War. Some of the armies engaged used camels as pack animals, and they were reputed to be stronger and more reliable than horses or mules. As leaders of the American military often tried to learn from European counterparts, French and Russian armies deploying camels in a war zone must have given the idea an air of practicality. Moving the Camel Project Through Congress An officer in the U.S. Armys quartermaster corps, George H. Crosman, first proposed the use of camels in the 1830s. He thought the animals would be useful in supplying troops fighting in the rough conditions of Florida. Crosmans proposal went nowhere in the Army bureaucracy, though it apparently was talked about enough that others found it intriguing. Jefferson Davis, a West Point graduate who spent a decade serving in frontier Army outposts, became interested in the use of camels. And when he joined the administration of Franklin Pierce he was able to advance the idea. Secretary of War Davis submitted a lengthy report which took up more than an entire page of the New York Times of December 9, 1853. Buried in his various requests for Congressional funding are several paragraphs in which he made the case for appropriations for study the military use of camels. The passage indicates that Davis had been learning about camels, and was familiar with two types, the one-humped dromedary (often called the Arabian camel) and the two-humped central Asian camel (often called the Bactrian camel): On the older continents, in regions reaching from the torrid to the frozen zones, embracing arid plains and precipitous mountains covered with snow, camels are used with the best results. They are the means of transportation and communication in the immense commercial intercourse with Central Asia. From the mountains of Circassia to the plains of India, they have been used for various military purposes, to transmit dispatches, to transport supplies, to draw ordnance, and as a substitute for dragoon horses.Napoleon, when in Egypt, used with marked success the dromedary, a fleet variety of the same animal, in subduing the Arabs, whose habits and country were very similar to those of the mounted Indians of our Western plain. I learn, from what is believed to be reliable authority, that France is about again to adopt the dromedary in Algeria, for a similar service to that in which they were so successfully used in Egypt.For like military purposes, for express and for reconnaissances, it is believed the dromedary would supply a want now seriously felt in our service; and for transportation with troops rapidly moving across the country, the camel, it is believed, would remove an obstacle which now serves greatly to diminish the value and efficiency of out troops on the western frontier.For these considerations it is respectfully submitted that the necessary provision be made for the introduction of a sufficient number of both varieties of this animal to test its value and adaptation to our country and our service. It took more than a year for the request to become a reality, but on March 3, 1855, Davis got his wish. A military appropriations bill included $30,000 to fund the purchase of camels and a program to test their usefulness in Americas southwestern territories. With any skepticism tossed aside, the camel project was suddenly given considerable priority within the military. A rising young naval officer, Lieutenant David Porter, was assigned to command the ship sent to bring back the camels from the Middle East. Porter would go on to play a critical role in the Union Navy in theà Civil War, and as Admiral Porter he would become a revered figure in late 19th century America. The U.S. Army officer assigned to learn about camels and acquire them, Major Henry C. Wayne, was a West Point graduate who had been decorated for valor in the Mexican War. He later served in the Confederate Army during the Civil War. The Naval Voyage to Acquire Camels Jefferson Davis moved quickly. He issued orders to Major Wayne, directing him to proceed to London and Paris and seek out experts on camels. Davis also secured the use of a U.S. Navy transport ship, USS Supply, which would sail to the Mediterranean under the command of Lt. Porter. The two officers would rendezvous and then sail to various Middle Eastern locations in search of camels to purchase. On May 19, 1855, Major Wayne departed New York for England aboard a passenger ship. The USS Supply, which had been specially outfitted with stalls for camels and a supply of hay, left the Brooklyn Navy Yard the following week. In England, Major Wayne was greeted by the American consul, future president James Buchanan. Wayne visited the London zoo and learned what he could about the care of camels. Moving on to Paris, he met with French military officers who had knowledge of using camels for military purposes. On July 4, 1855, Wayne wrote a lengthy letter to Secretary of War Davis detailing what he had learned during his crash course in camels. By the end of July Wayne and Porter had met up. On July 30, aboard USS Supply, they sailed for Tunisia, where an American diplomat arranged a meeting with the countrys leader, the Bey, Mohammad Pasha. The Tunisian leader, when hearing that Wayne had bought a camel, presented him with a gift of two more camels. On August 10, 1855, Wayne wrote to Jefferson Davis from about the Supply, anchored in the Gulf of Tunis, reporting that three camels were safely aboard the ship. For the following seven months the two officers sailed from port to port in the Mediterranean, endeavoring to obtain camels. Every few weeks they would send highly detailed letters back to Jefferson Davis in Washington, detailing their latest adventures. Making stops in Egypt, present day Syria, and the Crimea, Wayne and Porter became fairly proficient camel traders. At times they were sold camels which exhibited signs of ill-health. In Egypt a government official tried to give them camels which the Americans recognized as poor specimens. Two camels they wanted to dispose of were sold to a butcher in Cairo. By the beginning of 1856 the hold of USS Supply was filling up with camels. Lieutenant Porter had designed a special small boat which contained a box, dubbed the camel car, which was used to ferry camels from land to the ship. The camel car would be hoisted aboard, and lowered down to the deck used to house the camels. By February 1856 the ship, carrying 31 camels and two calves, set sail for America. Also aboard and headed to Texas were three Arabs and two Turks, who had been hired to help tend to the camels. The trip across the Atlantic was plagued by bad weather, but the camels were finally landed in Texas in early May 1856. As only a portion of the Congressional expenditure had been spent, Secretary of War Davis directed Lieutenant Porter to return to the Mediterranean aboard USS Supply and bring back another load of camels. Major Wayne would remain in Texas, testing the initial group. Camels in Texas During the summer of 1856 Major Wayne marched the camels from the port of Indianola to San Antonio. From there they proceeded to an army outpost, Camp Verde, about 60 miles southwest of San Antonio. Major Wayne began using the camels for routine jobs, such as shuttling supplies from San Antonio to the fort. He discovered the camels could carry much more weight than pack mules, and with the proper instruction soldiers had little problem handling them. When Lieutenant Porter returned from his second voyage, bringing an additional 44 animals, the total herd was about 70 camels of various types. (Some calves had been born and were thriving, though some adult camels had died.) The experiments with camels at Camp Verde were considered a success by Jefferson Davis, who prepared a comprehensive report on the project, which was published as a book in 1857. But when Franklin Pierce left office and James Buchanan became president in March 1857, Davis left the War Department. The new secretary of war, John B. Floyd, was convinced the project was practical, and sought Congressional appropriations to purchase an additional 1,000 camels. But his idea received no support on Capitol Hill. The U.S. Army never imported camels beyond the two shiploads brought back by Lieutenant Porter. Legacy of the Camel Corps The late 1850s was not a good time for a military experiment. The Congress was becoming increasingly fixated on the nations impending split over slavery. The great patron of the camel experiment, Jefferson Davis, returned to the U.S. Senate, representing Mississippi. As the nation moved closer to Civil War, its likely the last thing on his mind was the importation of camels. In Texas, the Camel Corps remained, but the once promising project encountered problems. Some of the camels were sent to remote outposts, to be used as pack animals, but some soldiers disliked using them. And there were problems stabling the camels near horses, who became agitated by their presence. In late 1857 an Army Lieutenant named Edward Beale was assigned to make a wagon road from a fort in New Mexico to California. Beale used about 20 camels, along with other pack animals, and reported that the camels performed very well. For the next few years Lieutenant Beale used camels during exploratory expeditions in the Southwest. And as the Civil War began his contingent of camels was stationed in California. Though the Civil War was known for some innovative experiments, such as the Balloon Corps, Lincolns use of the telegraph, and inventions such as ironclads, no one revived the idea of using camels in the military. The camels in Texas mostly fell into Confederate hands, and seemed to serve no military purpose during the Civil War. It is believed most of them were sold to traders and wound up in the hands of circuses in Mexico. In 1864 the federal herd of camels in California was sold to a businessman who then sold them to zoos and traveling shows. Some camels were apparently released into the wild in the Southwest, and for years cavalry troops would occasionally report seeing small groups of wild camels.
Thursday, February 27, 2020
Power Quality in Electrical Power System Assignment
Power Quality in Electrical Power System - Assignment Example Hence the load that develops is one of the most prominent reasons as well as the most important victim of power quality related issues. Since they are non-linear in nature this causes great load which results in turbulence in the waveform of the voltage. à ââ¬Å"Componentà can be established. It is possible in the same way to correlate certain disturbances with consumption patterns of electricity, such as the early evening television peak in the harmonic distortion and signal Processing ofà Power Quality etc.â⬠(Bollen, 2006) Thus in order to overcome this disturbance there are numerous components used. These components prove to be quite efficient as they manage the load. Basically these devices are capacitors which are responsible to store electrical charges within them. This is designed according to the task that they need to cater. These capacitors aid in effective functioning of the machine ensuring standard power quality. The ranges may vary depending on the purpose they are meant to serve, today it has been observed that they also posses self healing capabilities which increase the life of the capacitor and moreover the product. This not only helps to increase voltage quality but also is economical. â⬠¢ Why is it important to maintain high power quality? It is extremely important to maintain high power quality. It is noted that the best power quality is when the frequency of the electric supply results in a steady magnitude which coincides with the frequency of the sinusoidal waveform of the voltage. Since there is always some error and non-zero impedance occur in the supply system which is because of the great amount of load that might be faced by the system. This gives birth to another phenomenon of transients and outrages which fluctuates the reality. Hence when one considers the power quality they consider to what extent the power supply system is in correspondence with the ideal power supply system. ââ¬Å"The targetedà power qualit y disturbances on the utility side include input voltage harmonics, voltage unbalance, and input inductor unbalance.â⬠(Lee, 2008) these are the major causes of power disturbance which make it essential to maintain high power quality. Hence if the power quality of a system is good, reliable and efficient then any load which is associated with it will work effectively and efficiently. Also it will help to cut down the installation cost and minimize the carbon footprints. On the contrary if the power quality of a system is not satisfactory then the life of the product will fade furthermore the effectiveness of the installation will be badly affected. Economy would hamper as well as the cost of installation would eventually maximize and the carbon footprint will also be affected. This can result in no operation what so ever. The following reasons justify so as to why maintaining power quality is essential They will help to avoid unexpected power failures. Failure or malfunction of product is less. Causes no or little damage to sensitive devices. Avoids interference in communication. Saves loses and protects the systems. There is no requirement of increasing the installation in order to deal with failures resulting in economical solutions.
Monday, February 10, 2020
Logitech International SA Case Study Example | Topics and Well Written Essays - 500 words
Logitech International SA - Case Study Example The ability to innovate is a key success factor which determines the performance of a business organization (Logitech Annual Report 2007). Bringing the products in the market at the right time enables a company to outperform its competitors and survive in a very risky market. Logitech is operating in a global landscape exposing it to the fluctuations of exchange rates (Logitech Annual Report 2007). This exchange rate risk makes the company vulnerable to the changes in value of currencies. For instance, the weakening of the dollar due to the economic recession makes its income in the United States lower when expressed in Swiss franc. This in turn can make investors wary in investing in Logitech noting that exchange rate fluctuations can shrink the company's revenues and profits when expressed in Swiss francs. Economically speaking, the company is also exposed to the recession in the United States and the food crisis happening in Asia. It should be noted that these are Logitech's major markets. As the disposable income of consumers in these regions is squeezed, IT products become unappealing as they turn to allocating budgets for basic necessities like food and medicine. The whole IT industry is poised to benefit from the economic development of countries like China and India.
Thursday, January 30, 2020
Indias Population Essay Example for Free
Indias Population Essay India with its 1.21 billion population occupies second place in the world next to China. India has about 17.5% of the world population with only 2.4% of the world area. The changes in the size and growth of Indiaââ¬â¢s population are considered here in terms of two broad periods, namely Pre-Independence period and the Post-Independence period. The year 1881 is important in the sense that it was the year when the first census on a country wide basis was taken in India. Population of India: Pre Independence Period According to Herodotus (490 B. C.), India was one of the most populous countries in the world. Alexenderââ¬â¢s army which invaded India in 327-326 B.C., found a large population. Indiaââ¬â¢s first real empire under Chandragupta Maurya (321-297 B.C.) left records indicating the existence of a standing army of approximately 7,00,000 men. Only a very substantial population could have supported such a large army. The first national decadal census was conducted in 1881 recording a population of 225 million which declined to 251 million in 1921. The Population of India: Post Independence Period Till 1951, when the first census after independence was conducted, the decadal growth was around 13 to 14 percent, registering a gradual rise. 1961 recorded a growth of 21.5percent, which increased to 24.8 and 24.7 percent in 1971 and 1981 respectively. In 1991 the growth rate slightly declined to 23.6 percent. It is a matter of concern that the decadal population growth rate has declined to 21.2 percent in 2001 which further declined to 17.6 percent in 2011. It is estimated that by 2028 India will double its population and it will become the most populous country in the world by 2035. Population Planning in Five Year Plans : India is the first country of the world to adopt the population planning to control its population as an official policy. After an expansion of clinical services in the first two five year plans, the third plan which started in an environment of shock, changed its strategy to extension approach which continued in the fourth plan too. The fifth Five Year Plan (1974-1979) has been unique in the history of the country as a new Family Planning Programme was opted during this. The National Population Policy Statement of April 1976 was the most articulate renunciation of the official policy. The following were its main features: 1. Increase the legal minimum age at marriage from 15 to 18 years for females and 18 to 21 years for males. 2. Freezing the population at the 1971 level for determining representation in Parliament and the State Legislatures up to 2000 A.D. 3. 1971 population was considered as the base for allocation of Central assistance to the State Plans. 4. Eight percent of Central Assistance to the States was to be linked with family planning programme performance. 5. The allotment of houses and loans were to be linked to family size. The eighth Five Year Plan (1992-1997) set the population goal for achieving a net reproductive rate of one by turn of the century and zero population growth by the year 2050 A.D. The immediate objective of the National Population Policy 2000 was to address the unmet needs for contraception, health care infrastructure. In the eleventh Plan which started in 2007, it was emphasised that only through a multi- pronged strategy of combining fertility control measure and welfare measures with population education for people at large and youths in particular along with making school education up to age 14 free and compulsory and reducing drop outs at primary and secondary school levels below 20 percent for both boys and girls, the population goal of India can be achieved. For the twelfth Five Year Plan (2012-2017), it has been emphasised to improve healthcare infrastructure and implementation of making education compulsory for all the children till the age of 14. Adverse Consequences of Population Explosion: The population explosion, which is undermining all our efforts towards development of the country, is perhaps the single most pressing problems faced by it. The recent census has revealed that while there has been a decline in the rate of growth of population, still the growth rate of 1.7 percent per annum is quite high. If the population growth continues as at present, the country will have such a large population which would be virtually unmanageable. Despite best efforts, it would not be possible to provide even the basic necessities of life to the people at large. Such relentless population growth would also create havoc to our environment and will lead to ecological crises. It has considerable impact on natural resource uses and socio economic development. Rapid population growth will also mean increased urbanization, which may lead to more diseases and further deterioration of water and sewer systems and various pollutions. Future Directions: There cannot be only one miracle formula which will cover the entire country. The main barriers of population control such as poverty, illiteracy, son ââ¬â preference etc. need to be removed. Since these barriers operate simultaneously at different levels, it is difficult and rather impractical to assign priorities to them. It is obvious that increase in literacy and educational status of women will have positive effects on population control, infant mortality, health care, nutrition, sanitation and hygiene. Further, it will result in raising the age of marriage, improved knowledge of contraception and adoption of small family norm. Population control and Family Welfare Programme need to have a national consensus, cutting across political, religious and cultural differences. It should be based on active community participation and has to be transformed from a Government Programme into Peopleââ¬â¢s Movement. Population education should be part of school and college education. It should also form an important ingredient of adult education and non-formal education. Communication strategies should be so devised as to be effective enough to bring about attitudinal changes and dispel apathy, ignorance and misgivings about family planning and small family norm. In conclusion, it is important that people not only have proper health services which are both accessible and available, but they should also have access to employment which will provide them with financial security. People must be made educated and have awareness, as education itself is the best contraceptive. People should realize that having a girl child does not mean carrying a heavy burden.
Wednesday, January 22, 2020
Coal Chemistry and Technology Essay example -- Coal Research Paper
1. Coal formation Coal was formed from remains of plants from several hundred millions years ago partially decomposed. These remains were settled in regions where waterlogged or swampy regions prevailed. These conditions avoid complete decomposition making possible the gradual peat formation. Peat is not considered coal actually, but is an essential step to coal formation. This formation process is called "coalification" and it is essentially a progressive change from peat to anthracite passing through different types of coals. This process not only depends on the time, but also on temperature and burial pressure (Speight 1983). Schematic representation of the coalification process (Speight 1983) 2. Coal Classification Coals can be classified by its "rank". The rank of the coal can be defined as the degree of alteration that coal experiments during the coalification. On the one hand there are Lignite and sub-bituminous coals which are Low rank coals. These have a lower content in Carbon, are lighter and have higher moisture levels. On the other hand there is Bituminous coals and Anthracite which are high rank coals. They have a higher content in carbon which means they have more energy content. They have lower moisture levels and a more vitreous appearance (University of Kentucky, 2012). Ã¢â¬Æ' 3. Coal Composition Coal is an organic sediment which can be described in several ways. The most common way is in terms of the elemental composition. J. G. Speight, (1991) suggested that coal can classified on the basis of the general formula: Cn Hm Nx Oy Sz (where n, m, x, y and z are number of atoms of each element) Coal is not a homogeneous material. It is heterogeneous and is contaminated by different types of impurities w... ...rcel Dekker Inc. Classification and Rank of Coal. University of Kentucky. (2012). [ONLINE] Available at: http://www.uky.edu/KGS/coal/coalkinds.htm. [Accessed 12 November 13]. Couch G. R, (1991). Advanced coal cleaning technology: IEA Coal Research. (IEACR/44) Vernon J.L, Jones T, (1993) Sulphur and Coal. London: IEA Coal Research (IEACR/57) Ryan, B, Ledda L, (1997). A review of sulphur in coal: with specific reference to the telkwa deposit, North-western british Columbia. Geological Fieldwork, Paper 1998, Pages 1-10 Morrison G. F, (1981). Chemical desulphurisation of coal: IEA Coal Research. (ICTIS/TR15) Blà ¡zquez B.L, Ballester A, Gonzà ¡lez F, Mier J.L, (1991). Desulfuracià ³n de Carbones, la biodesulfuracià ³n como alternativa. Minerà a del Carbà ³n. Pages 40-49 Morrison G. F, (1982). Control of sulphur oxides from coal combustion: IEA Coal Research. (ICTIS/TR15)
Tuesday, January 14, 2020
Movie Review: The White Balloon Essay
Jafar Panahiââ¬â¢s movie entitled ââ¬Å"The White Balloonâ⬠is a depiction of social reality in these present times within the eyes of a young girl protagonist. The conflict of the story is simple as well as the resolution and its setting. The main problem of the protagonist is her likeness to buy a fish but she does not have any amount of money in her pocket. What she did was she took her motherââ¬â¢s last money and went to the store but while walking to the store, the girl lose her motherââ¬â¢s money that brought fear and anger within her. At the end of the story, there is no concrete solution to the conflict but the protagonist made her own way of obtaining the money to buy the fish. à à à à à à à à à à à Like what other critics and analysts said towards this film, there is no need to impose complex conflicts to make each story a good one. As long as there are complete scenarios and interpretations of things, everything would be better than the others. This is what Panahi did in this movie. He only took the courage to discuss and illustrate the life of Iranians in a typical country of Iran. Though it is more on the simple aspects of Iranian tradition, there is a combination of twist and turns that will bring its audience to the mood of waiting for the next situation. à à à à à à à à à à à In my own perception and point of view regarding the issues and topics that were tackled in the movie is that the director has no direct attack towards the resolution of the conflict. He is already satisfied with the illustrations and discussions of Iranian life but there is no form of resolution to the conflict. The protagonistââ¬â¢s problem was not a personal problem but a social problem that should not be taken for granted. It means that the director itself should not take this for granted if he wanted to analyze the situation of Iranian people especially in the cases like this where the main character is a child who always seeks for answers in every question. Reference Panahi, J. The White Balloon.
Monday, January 6, 2020
Evolution Drives The Diversity And Unity Of Life - 1674 Words
Big Idea 1- The process of evolution drives the diversity and unity of life Natural selection is evolutions driving mechanism. Evolution is ââ¬Å"the process by which different kinds of living organisms are thought to have developed and diversified from early forms during the history of the earth.â⬠Darwin s theory states that inheritable variations exist within individuals in a population. This big idea has impacted human life and evolution in many ways. With natural selection as its major mechanism, according to Darwinââ¬â¢s theory, competition for limited resources results in differential survival. People with more favorable phenotypes are more likely to survive and reproduce, which passes their traits onto future generations. This big idea relates to the other big ideas because you need to transmit the important information, as in genes and traits that an organism will pass on to future generations so that they can eventually evolve. This is the process of natural selection. Alteration in the gene pools of populations can be caused by naturally occurring catastrophic or human induced events. It can also be caused by random environmental changes. In order for species to survive, they need a diverse gene pool because environmental changes can readily change. Species may not be able to survive in new environmental changes without a diverse gene pool and phenotype diversity. Sources of genetic variation can provide new genes and combinations of alleles that grant new phenotypes.Show MoreRelatedEvolution Of A Common Single Celled Origin1278 Words à |à 6 Pages In the course of AP Biology, there are four ââ¬Å"Big Ideasâ⬠. The first one is ââ¬Å"The process of evolution drives the diversity and unity of lifeâ⬠. The second is ââ¬Å"Biological systems utilize free energy and molecular building blocks to grow, to reproduce and to maintain dynamic homeostasisâ⬠. 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