The Criminal Justice System Is Viewed As A Black Problem

The current crime and incarceration trends have declined since early 1990s, which in part is due to the current reforms that takes place within the criminal justice system, such as early release dates for drug charges and non-violent crimes (Mauer, 2011). The incarceration rates in the United States are â€Å"three to four times that of other industrialized nations,† and the punishment scale is viewed as â€Å"out of proportion to that of other industrialized nation† (Mauer, 2011). Mauer (2011) reported â€Å"in many respects the driving force of mass incarceration is the racial dynamic of criminal justice policy.† He points out that due to extreme incarceration rates among the African American community, the criminal justice system is viewed as a â€Å"black problem† (Mauer, 2011). At a national level, 80 percent of the populations incarcerated were of African American decent, which provides evidence that laws can be discriminatory (Mauer, 2011). The current crime and incarceration trend makes sense to me somewhat, and it also makes me uneasy. In my opinion, it makes no sense to keep individuals with drug related charges incarcerated for 24 years, which was the sentence Kemba Smith initially received (Mauer, 2011). I agree with the early release of drug and non-violent offenders, if they have been rehabilitated through education. I believe some crimes are committed based on the social learning theory. If someone has been taught to make a quick hustle versus gaining employment thatShow MoreRelatedRacial Discrimination And The Criminal Justice System1512 Words   |  7 PagesAlthough saying the criminal justice system is racist is a controversial statement, there is evidence and statistics that prove it to be true. Research and evidence validate the issue of racism to be undeniable. Equality and justice are out of reach with the racism that takes place in our criminal justice system and our country. Racial discrimination i s prevalent amongst the African American culture in issues regarding drug use, and incarceration which creates unfair inequality for this race. I willRead MoreRace and Crime1088 Words   |  5 PagesThe Uniform Crime Report statistics state that blacks are more frequently arrested than whites. While this may mean that blacks actually commit more crime, what are some other factors that may be driving the statistics? If black neighborhoods are under more police surveillance than white neighborhoods, what does this mean for crime statistics? Can you give examples of how blacks receive differential treatment in the criminal justice system? What are your thoughts? Remember to back your commentsRead MoreThe Effects Of Race On America Today1429 Words   |  6 Pagescontroversies surrounding the United states Justice System have been making the news headlines. What Americas are seeing is institutional inequalities that are creating racial conflict. Institutional inequalities have lead to racial oppression do to the power structure in the United States. Critical Race Theory provides an explanation showing that race is imbedded in American society today; can the theory explain why racial inequalities between the United States Justice System and citizens of different colorsRead MoreBlack And Minority Ethnic Offenders1373 Words   |  6 PagesClinks and The Black Training and Enterprise Group to discuss how the changing landscape of the Criminal Justice System could improve the outcomes for Black, And Minority Ethnic offenders (BAME). Following the meeting Baroness Young met the Secretary of State for Justice to seek his sup port to establish a task group. The Justice Secretary requested that the review included Muslim Offenders. The investigation and subsequent Young Review led by Baroness Lola Young, examined why young black and MuslimRead MoreThere Are No Children Here By Kotlowitz Essay1236 Words   |  5 PagesThere Are No Children Here, Kotlowitz describes the experiences of Pharoah and Lafayette to highlight the racist and classist undertones existing within the criminal justice system of Chicago in the late 1980s. This essay will utilize the theory of critical criminology to illustrate the structures of inequality within the criminal justice system and the subsequent marginalization of youth that exists within the Henry Horner community, leading to youth deviance and violent crime. Beginning with a briefRead MoreRacial Profiling in Canada1166 Words   |  5 PagesRacial profiling is the act of selecting targets for criminal investigation not on behavioural merit, but exclusively on markers of personal identity such as race, ethnicity, and religious orientation (Perry, 2011, p.9). In other words, rac ial profiling is the by-product of subjecting individuals who are from a particular racial community to a higher degree of scrutiny and surveillance by criminal justice system agents when compared to other racial communities (Wortley and Owusu-Bempah, 2011, p.135)Read MoreHow unfair the justice system is in regards to race and the results of it.1743 Words   |  7 Pageshave higher arrest and conviction rates, face higher bail amounts, and are more often the victims of police use of deadly force than white citizens. When it comes to criminals, many people have a preconception of what a criminal is. Usually when people think of a criminal they picture a Black or Latino face. The thought of an Asian criminal is often related to Asian gangs. Interestingly enough, White people as a group are rarely associated with the thought of crime, even though they account for 70% ofRead MoreAfrican Americans And The Justice System1090 Words   |  5 Pagesor last person of the black minority to b e cheated by the justice system. Today it is perfectly legal to discriminate against criminals in nearly all the ways that it was once legal to discriminate against African Americans(Alexander). The justice system in America was set up to protect citizens while upholding social control and deterring crime. But the poor guidance within the system has caused racial disparities to persist at every level of the U.S. criminal justice system. All across the countryRead MoreEssay about The Criminal Justice System in USA1657 Words   |  7 PagesThe Criminal Justice System in the United States of America was established with noble intentions. The basis of the system can be traced back from the first book of the Bible Genesis, and the story of Cain and Able. The criminal justice system was established to be morally suitable for a growing diverse society. Moral dilemmas within the system arise from concerns related to principles of officials’ right and wrong behavior. These princ iples are often embedded into a culture of the human characterRead MoreRacial Disparity in Sentencing1728 Words   |  7 PagesUniversity of Phoenix Cultural Diversity in Criminal Justice CJA/423 Ron McGee September 06, 2010 Abstract In this paper I will illustrate racial disparity in sentencing in the criminal justice system. The causes of racial disparity and the reasons it is on the rise, the research statistics, and the proposed solutions are discussed. Racial Disparity in Sentencing The intersection of racial dynamics with the criminal justice system is one of longstanding duration. In earlier times

World Peace Free Essays

21st the world is encouraged to recognize that day as a day of peace. I think it is quite easy for people to look at places around the world where there is clearly hostility going on, whether it be the Middle East, Africa, or inner cities in the United States, and think why can’t there simply be peace. To me peace is not about looking at places of hostility around the world and saying there must be peace there. We will write a custom essay sample on World Peace or any similar topic only for you Order Now Real peace around the world begins within you. Check inside and honestly answer the questions â€Å"Am I at peace within myself? â€Å"How do I express and encourage peace in my interactions with others? † Many people if they are honest are not at peace within themselves. They have allowed what is going on their physical world to disturb their peace. With their peace disturbed, they have either consciously or unconsciously disturbed the peace of those around them. I believe we must master peace within ourselves before we can hope to have authentic peace with anyone else. That is not to say that the two cannot be pursued simultaneously. There are wonderful organizations such as The Center For Non-Violent Communication, that can assist you in both recognizing the needs both within yourself and others so that you can have peaceful win/win conversations even in difficult circumstances. You can also make a conscious choice to release the thoughts, feelings, and beliefs that are responsible for disturbing your peace, and reprogram your subconscious mind to create peace in your life. In honor of International Peace Day 2009, I have created ten affirmations for personal peace within you, and ten affirmations for peace around the world. In a country, Peace is a term that most commonly refers to an absence of aggression, violence or hostility. Peace isn’t the absence of violence but rather the presence of justice. In a society, peace happens when different desires are in one agreement. Peace is based on many things, culture, education, family values, experience, history (to name a few) but the basis is the same—-to co-exist without war, killing, overpowering a fellow being. According to me, Peace is the feeling that all’s right with the world. When everyone around me in my family, my friend circle and my neighbourhood is happy, eager to love, accept and relate†¦ I feel at peace. Also, to me it means following what my heart says and sharing mutual trust and respect for people around me. However, in today’s world, peace and harmony face various threats. Terrorism, regional imbalance, economic disparity, and social inequality are some of the factors which threaten peace today. We all are so engrossed in our busy lifestyles and yet want our lives to be peaceful. We expect that peace to be omnipresent but what we need to realize is the fact that if we want peace- we have to live peacefully, love everyone, forgive, forget, etc. . It’s not enough to stand around asking if world peace will ever happen because that won’t do anything. Actions speak louder than any words. If everyone starts living the peaceful, loving way, things will change. But someone has to start and lead by example. Mahatma Gandhi once said â€Å"You must be the change you wish to see in the world. We can’t rely on anyone else to do this. We have to do these ourselves. Acceptance, compassion, and tolerance are the foundation of peace. Mahatma Gandhi showed that peace ends suffering and oppression, not by warring against an enemy but by bearing witness to wrongs and allowing sympathy and common humanity to do their patient work. Nelson Mandela and Mother Teresa lived different aspects of peace, which was proven to be a viable way to achieve great things. A Human Approach to World Peace When we rise in the morning and listen to the radio or read the newspaper, we are confronted with the same sad news: violence, crime, wars, and disasters. I cannot recall a single day without a report of something terrible happening somewhere. Even in these modern times it is clear that one’s precious life is not safe. No former generation has had to experience so much bad news as we face today; this constant awareness of fear and tension should make any sensitive and compassionate person question seriously the progress of our modern world. World peace is an ideal of freedom, peace, and happiness among and within all nations and/or peoples. World peace is a Utopian idea of planetary non-violence by which nations willingly cooperate, either voluntarily or by virtue of a system of governance that prevents warfare. Although the term is sometimes used to refer to a cessation of all hostility among all individuals, world peace more commonly refers to a permanent end to global and regional wars with future conflicts resolved through nonviolent means. How to cite World Peace, Essay examples

Azerbaijan free essay sample

The country was among the birthplaces of mankind and is located at the heart of ancient civilizations. Furthermore the country is known to be among the most progressive and secular Islamic societies. Aside from having been the first Muslim country to have operas, theater plays, and a democratic republic, Azerbaijan today is among the Muslim countries where support for secularism and tolerance is the highest. The Azerbaijan Democratic Republic, the first democratic and secular republic in the Muslim world, was established in 1918, but was incorporated into the Soviet Union in 1920. Azerbaijan regained independence in 1991. The Constitution of Azerbaijan does not declare an official religion but the majority of people adhere to the Shia branch of Islam, although Muslim identity tends to be based more on culture and ethnicity rather than religion and Azerbaijan remains as one of the most liberal majority-Muslim nations. The pre-Turkic Azerbaijani population spoke an Iranian language called the Old Azeri language, which was gradually replaced by a Turkic language, now known as the Azerbaijani language from the 11th century onward until it became completely extinct in the 16th century. To distinguish it from the Turkic Azerbaijani or Azeri language, this Iranian language, is designated as the Azeri language (or Old Azeri language), because the Turkic language and people are also designated as Azeri in the Persian language. Azerbaijan is in the South Caucasus region of Eurasia, straddling Western Asia and Eastern Europe. It lies between latitudes 38Â ° and 42Â ° N, and longitudes 44Â ° and 51Â ° E. The total length of Azerbaijans land borders is 2,648 km (1,645 mi), of which 1007 kilometers are with Armenia, 756 kilometers with Iran, 480 kilometers with Georgia, 390 kilometers with Russia and 15 kilometers with Turkey. The coastline stretches for 800 km (497 mi), and the length of the widest area of the Azerbaijani section of the Caspian Sea is 456 km (283 mi). The territory of Azerbaijan extends 400 km (249 mi) from north to south, and 500 km (311 mi) from west to east. Three physical features dominate Azerbaijan: the Caspian Sea, whose shoreline forms a natural boundary to the east; the Greater Caucasus mountain range to the north; and the extensive flatlands at the countrys center. There are also three mountain ranges, the Greater and Lesser Caucasus, and the Talysh Mountains, together covering approximately 40 percent of the country. The main water sources are the surface waters. However, only 24 of the 8,350 rivers are greater than 100 km (62 mi) in length. All the rivers drain into the Caspian Sea in the east of the country. Since the independence of Azerbaijan in 1991, the Azerbaijani government has taken drastic measures to preserve the environment of Azerbaijan. But national protection of the environment started to truly improve after 2001 when the state budget increased due to new revenues provided by the Baku-Tbilisi-Ceyhan pipeline. Within four years protected areas doubled and now make up eight percent of the countrys territory. Since 2001 the government has set up seven large reserves and almost doubled the sector of the budget earmarked for environmental protection. Azerbaijans diverse landscape affects the ways air masses enter the country. The Greater Caucasus protects the country from direct influences of cold air masses coming from the north. That leads to the formation of subtropical climate on most foothills and plains of the country. Meanwhile, plains and foothills are characterized by high solar radiation rates. Rivers and lakes form the principal part of the water systems of Azerbaijan; they were formed over a long geological timeframe and changed significantly throughout that period. This is particularly evidenced by fragments of ancient rivers found throughout the country. The countrys water systems are continually changing under the influence of natural forces and human introduced industrial activities. Artificial rivers (canals) and ponds are a part of Azerbaijans water systems. From the water supply point, Azerbaijan is below the average in the world with approximately 100,000 m? year of water per km?. The first reports on the richness and diversity of animal life in Azerbaijan can be found in travel notes of Eastern travelers. Animal carvings on architectural monuments, ancient rocks and stones survived up to the present times. The first information on the animal kingdom of Azerbaijan was collected during the visits of naturalists to Azerbaijan in 17th century. Unlike fauna, the conce pt of animal kingdom covers not only the types of animals, but also the number of individual species. There are 106 species of mammals, 97 species of fish, 363 species of birds, 10 species of amphibians and 52 species of reptiles which have been recorded and classified in Azerbaijan. The national animal of Azerbaijan is the Karabakh horse, a mountain-steppe racing and riding horse endemic to Azerbaijan. The Karabakh horse has a reputation for its good temper, speed, elegance and intelligence. It is one of the oldest breeds, with ancestry dating to the ancient world. Azerbaijans vegetation consists of more than 4,500 species of higher plants. Due the unique climate in Azerbaijan, the vegetation is much richer in the number of species than the flora of the other republics of the South Caucasus. Azerbaijan is divided into 10 economic regions; 66 rayons and 77 cities of which 11 are under the direct authority of the republic. Also, Azerbaijan includes the Autonomous Republic of Nakhchivan. The President of Azerbaijan appoints the governors of these units, while the government of Nakhchivan is elected and approved by the parliament of Nakhchivan Self-ruling Republic. Tourism is an important part of the economy of Azerbaijan. The countrys large abundance of natural and cultural attractions make it an attractive destination of visitors. The country was a well-known tourist spot in the 1980s; yet, the Nagorno-Karabakh War during the 1990s crippled the tourist industry and damaged the image of Azerbaijan as a tourist destination. It was not until 2000s that the tourism industry began to recover, and the country has since experienced a high rate of growth in the number of tourist visits and overnight stays. In the recent years, Azerbaijan has also becoming a popular destination for religious, spa, and health care tourism. Around 95 percent of the populations are Muslims. 85% of the Muslims are Shia Muslims and 15% Sunni Muslims, and the Republic of Azerbaijan has the Second highest Shia population percentage after Iran. There are some other faiths practiced among the different ethnic groups within the country. By article 48 of its Constitution, Azerbaijan is a secular state and ensures religious freedom. Of the nations religious minorities, Christians are mostly Russian and Georgian Orthodox and Armenian Apostolic (almost all Armenians live in the break-away region of Nagorno-Karabakh). The culture of Azerbaijan has developed as a result of many influences. Today, Western influences, including globalized consumer culture, are strong. National traditions are well preserved in the country. Some of the main elements of the Azerbaijani culture are: music, literature, folk dances and art, cuisine, architecture, cinematography and Novruz Bayram. The latter is the traditional celebration of the ancient New Year. Novruz is a family holiday. The traditional cuisine is famous for richness of vegetables and greens used seasonally in the dishes. Fresh herbs, including mint, dill, basil, parsley, tarragon, leeks, chives, thyme, marjoram, green onion, and watercress, are very popular and often accompany main dishes on the table. Climatic diversity and fertility of the land are reflected in the national dishes, which are based on fish from the Caspian Sea, local meat (mainly mutton and beef), and an abundance of seasonal vegetables and greens. Saffron-rice ploy is the flagship food in Azerbaijan and black tea is the national beverage. Azerbaijan–Turkey relations have always been strong with the two often being described as one nation with two states by the ex-president of Azerbaijan Abulfaz Elchibey due to a common culture and history, and the mutual intelligibility of Turkish and Azerbaijani. Turkey has been a staunch supporter of Azerbaijan in its efforts to consolidate its independence, preserve its territorial integrity and realize its economic potential arising from the rich natural resources of the Caspian Sea. The countries share a short border, with the Aras River separating Turkey from the Nakhchivan exclave for just a few kilometers. Today, the relationship with Azerbaijan represents the most important bilateral partnership in current Turkish foreign policy while Azerbaijani foreign policy affirms its relationship with Turkey as one of its most enduring bilateral relationships, as evidenced in aligned political affairs, mutual cooperation in the areas of trade, commerce, finance, technology, academics, as well as the arts and sciences; the sharing of government and military intelligence, and joint combat operations and peace keeping missions carried out between Azerbaijani Armed Forces and Turkish Armed Forces.

Poverty Essays (972 words) - Poverty, Socioeconomics,

Poverty? How many people actually know the meaning of this word? However, I think is it possible to understand the meaning of poverty even if you have never suffered from it. Poverty is defined as the state of being poor or having the lack of providing material needs or comforts. Living in the United States, many of us do not think about poverty too much. Most people in the United States are above poverty level. They do not think about the less fortunate of America. On the other hand, ?more U.S. children live in poverty than in any other developed country (Parrillo 155). I think poverty is blamed either on the individual or the system. Several aspects such as intelligence, family life, and the system of capitalism are the author?s examples as to why poverty exists in the U.S. In addition, he explains methods the government is using to eliminate poverty in the United States. First, intelligence is marked as one of the factors of poverty because people tend to blame the actual person for their poor quality. For example, Richard Herrnstein, who ?argued that the poor have a lower intellectual capability than the non-poor, and that they marry other people of low intelligence, thus producing children of low intellectual capacity (Parrillo 157).? The fact is poverty does seem to be an inherited trait and that?s why people tend to think of the poor as lacking the knowledge to qualify and obtain a well paying job. For this reason, people of poor financial conditions receive fewer opportunities in the work force. In addition, families with parents that have a lack of education will impact the children?s education. For example, they are ?given little academic encouragement or assistance at home, and encountering the low expectations from their teachers that intensify their own low achievement (Parrillo 169)?. This results in the youth becoming unqualified for most decent paying jobs and just repeating the cycle of poverty. Next, family life, like intelligence, places blame of poverty on the individual. It has been consistently found that family instability is more common among the poor than in any other economic class. For example, ?marriages and pregnancies occur at an earlier age, divorces and desertions happen at a higher rate; and incidents of family disputes and violence are more frequent (Parrillo 168)?. In addition, family structure is important for developing stability for a child. It is also a factor in the way a child will themselves feel about the institution of marriage. Likewise, children from poor households are more likely to develop bad attitudes towards family life. Because there is a lack of support in poor families, individuals raised in these families are prone to failure. In addition, the system of capitalism is one of the aspects that place the blame on society for the continuation of poverty. For example, ?socialist, Michael Harrington argued the inadequate programs and misdirected priorities hampered efforts to solve this far from intractable problem (Parrillo 182).? Because the poor have no positive influence in society and lack political support, they have no way to break the ongoing cycle of poverty. As a final point, the United States government has many plans to help end poverty. The key program is through welfare. The welfare program is where money is given to applicable recipients whose household resources are below the mandated limits. This is to help them get back on the right path. The Food Stamp program is where stamps are presented to be used on food goods only. This can help ease cash flow troubles and allow people to save their money. The program Temporary Assistance for Needy Families was created in 1996 by the Welfare Reform Law. They provide assistance to needy families and also help with job opportunities. Another program is Supplemental Security Income, affiliated with the Social Security Program. The program is for the elderly, blind, or disabled people with little or no income. They offer money for food, clothes, and shelter to those that qualify. I agree with the functionalist perspective because it views society as a system. First, regarding the technology gap facing the poor and minorities, a functionalist perspective covers this issue based on the society?s agreement due to

Perspectives in Psychology essays

Perspectives in Psychology essays Sigmund Freud developed the psychoanalytical perspective by combining ideas of perception and memory with beliefs of biologically based instincts. His feelings were that unconscious processes such as fears and desires influence behaviour. These processes are forced into the unconscious because they are forbidden or punished by society and parents during childhood. Once in the unconscious they grow to become emotional problems, or on the positive side as ability's that are socially acceptable. Freud believed there is a cause for every action but they are often an unconscious motive. An example based on the psychoanalytical theory is how whenever I go to bed I always snuggle up to my extra blanket and pillows. From a psychoanalytical perspective this would be blamed on an unconscious desire for my mother or father to be in bed with me cuddling me just like they used to when I was a little boy. The biological perspective believes that all psychological events are results of the body affecting ones behaviour. It attributes overt behaviour to electrical and chemical events taking place in the body. Researchers study the brain activity of animals to in turn understand the human brain. It can give them an idea of how inborn biological mechanisms are responsible for human behaviours and thoughts. An example using the biological approach could be the way that I am very attracted to red haired females just like my dad is. From a biological perspective this could be based on the theory that my father's trait for finding red haired women attractive was passed down to me thru genes, that in effect leaves me with the same feelings. Humanistic psychology is the study of how the entire, subjective, experience affects behaviour and cognition. Humanists believe that to totally understand human nature they must push to understand the whole person including, behaviours, beliefs, feelings and anything else that pertain to mental and behavi...

Analysis of Ethical Issues in the Film The Rain Man

?The central ethical dilemma of the 1988 film The Rain Man concerns the proper treatment to be afforded to Raymond, an autistic man who is capable of performing immense feats of mathematical calculation but is psychologically attached to predetermined habits and routines, thus being unable to adapt to changing situations around him. Should Raymond be given a chance to live in an open setting, where he can freely interact with the world around him, or should he be confined to an institution?Raymonds brother, Charlie, discovers Raymonds existence only after the death of their father, who had willed the vast majority of his inheritance to Raymond. Charlie is at first immensely spiteful at his fathers decision and removes Raymond from the mental institution, attempting to blackmail the doctor in charge to transfer $1. 5 million to Charlie. Charlie is easily frustrated by Raymonds habits and oddities, as well as his need to always receive precisely the treatment to which he had become accustomed.However, Charlie later discovers Raymonds intelligent side during a trip to Las Vegas, where Raymond employs his astoundingly swift processing skills to win $86,000 while gambling. The two brothers subsequently forge an emotional bond, and Charlie is reluctant to return Raymond to the institution. He demonstrates the wish to take care of his brother and points out that Raymond has learned numerous new skills and information during the trip. However, the doctors in charge of Raymond show Charlie that Raymonds autonomy is greatly impaired; they ask Raymond a series of mutually exclusive questions, to which Raymond merely answers, Yes. Suzanne, Charlies girlfriend, thinks that Charlies initial treatment of Raymond is too harsh and intolerant. She would like to see Raymond afforded a more flexible and less dominating treatment by Charlie, and is upset that Charlie is using Raymond in order to blackmail the doctor into giving Charlie money. Eventually, however, she becomes pleased by Charlies increasing proximity to and genuine care for his brother. . Charlies initial kidnapping of Raymond was based on Charlies perception that Raymond was an easily manipulated disabled person who would comply with Charlies scheme to extort money from the doctor.Nevertheless, Raymond proves to have a personality of his own, which at first greatly irritates Charlie, but which Charlie eventually comes to love and refuses to relinquish. The doctor remains firm in his stance not to give the money of Charlies father in exchange for Raymond, and Charlie rejects a $250,000 offer in exchange for which he was to have severed all involvement with Raymond. After the doctors demonstrate Raymonds incapacity to make significant decisions, Charlie relucta ntly agrees to allow him to return to the mental institution. Despite the fact that Charlie and Raymond must separate at the end, Charlie promises to visit frequently, and his influence on Raymond has not been in vain. Raymond and Charlie now share jokes, and Raymonds range of comfort with respect to the products, services, and activities of daily life has been greatly amplified. Raymond, moreover, had assisted in rendering Charlies financial state more secure than it had been in the beginning of the film by winning $86,000 in Las Vegas.Charlie also learns to be more patient and tolerant in his relations with other human beings. He learns to discover the merits and values offered by others rather than merely lashing out at them in frustration. The decision to return Raymond to the mental institution demonstrated first and foremost the principle of nonmaleficence. The doctors wished to ascertain that Raymond would not pose a danger to his own life by certain irrational and perhaps involuntary reactions, such as banging his head against a window as a result of hearing a smoke alarm. However, this action denied some of Charlies attempts at beneficence toward Raymond, as Charlie attempted to provide Raymond shelter, entertainment, and opportunity beyond what Raymond was used to or what was offered at the hospital. Though some of Charlies influence remained with Raymond, the doctors decision prevented additional improvements to Raymonds state due to the concern that attempts at these would undermine Raymonds already delicate condition.The principle of autonomy was also denied, as Raymond was deemed incapable of making his own choices; the doctors demonstrated that he would give contradictory answers to the questions asked of him, and thus argued that their paternalistic supervision over his decision-making would benefit him most. An alternative decision with respect to Raymonds fate would have been to allow Raymond to remain with Charlie, but under the supervision of various doctors and psychological counselors.In this way, the doctors could have continued to exerc ise precautionary measures against Raymonds self-destructive activities, while Charlie could have continued to broaden Raymonds comfort zone and eventually render him fit for rudimentary social interaction. This would both benefit Raymond and protect him from harm, fulfilling the principles of beneficence and nonmaleficence. Moreover, Raymond would, with an expanded worldview, gain greater autonomy in making his own decisions. A freer environment (where constraints are flexible rather than rigid) would enable Raymond to have the greatest possible degree of personal autonomy that he is capable of carrying out. Moreover, the principle of justice requires that Raymond be given the same right to the pursuit of happiness as is afforded to non-autistic persons. This means that absolute paternalism over Raymond should be off-limits to his guardians, who need not regulate every detail of Raymonds life in order to ensure his security. This decision would be more consistent with the ethics of principlism than the one actually carried out in the film.

Geomorphology Lab Report Example | Topics and Well Written Essays - 1500 words

Geomorphology - Lab Report Example This paper explores the process of geomorphology. The processes of the surface are made up of wind, water, fire, ice, and living things on the earth surface. The chemical reactions forming soils and altering the stability, material, and topographical rate of change under gravitational force are some of the surface processes. These factors are strongly affected by climate. The geological processes are the mountain range uplift, volcanic growth, isostatic changes in the elevation of land surfaces, sedimentary basins formation are also surface processes. The surface of the earth together with the topography form an intersection of climatic, biologic, and hydrologic action with the processes of geology. The huge topographies found on Earth display the surface intersection and the action of the subsurface. The belts of the mountains are always uplifted because of the geological processes. In the regions that are uplifted high, denudation produces the sediment that is deposited and transported elsewhere within the coastal landscape. In this case, The similar ideas may apply in cases where the individual landforms are evolving as a result of the subtractive and additive balance of processes. These processes may directly influence each other. The water, ice sheets together with sediments are the loads that may alter the topography via flexural isostasy. In many cases, the local climate of a certain place may be modified, which would in turn modify the topography by altering the hydraulic regimes of the evolution. Different geomorphologists are specifically interested in the feedback potential of tectonically and climate mediated through the geomorphic processes. The geomorphologists addresses the issues considered being more specific. They investigate the glacial deposits like eskers, moraines, and the proglacial lakes together with the glacial erosion traits that establishes the chronologies of all the

Please read the instructions carefully Article Example | Topics and Well Written Essays - 250 words

Please read the instructions carefully - Article Example It should be an increase of $0.5 billion from a decade ago. Most of the adhesives used in cars include: crestomer advantage 30, UV-curing, and crestabond M1-05. They are proven to be reliable with long term bond strength, durability, and toughness. The clean motion AB has used them for designing the Zbee electricity vehicle. The adhesives have made Zbee vehicle very light to be powered by an electric motor that use 4KW (â€Å"Adhesives Increase†). This has reduced fuel consumption for urban transportation. Adhesives are more efficient in joining aluminum materials with other metals such as steel where weld cannot be used. In addition, they are one-component and solvent-free materials. This makes them easy and safe to be integrated with other manufacturing materials. In the automotive industry, adhesives assemble critical devices such as seat belt monitoring switches and air bag deactivation switches (Uske and

Marketing Plan Essay Example for Free

Marketing Plan Essay World Wide Wonderland is a theme and amusement park business offering world-class experience to families, students and foreign tourists around Negros Occidental. Being a theme park, we offer a variety of products. And since it is called â€Å"World Wide Wonderland†, the company will take you to the different parts of the globe. The organization’s major products would include the World Adventure Coaster, the European Castle Hotel and The Barangay Filipino Museum that can satisfy the customers’ recreational needs as they step into a whole new world of fun, information and adventure and that will serve as a fresh new way to enjoy the day with your families, friends and co-workers. World Wide Wonderland is renowned for their convenient and strategic location in Talisay City, Negros Occidental of which is a growing city in terms of economy in the tourism industry. Also synonymous are the services that provide high prices to go along with premium quality and the wide range of other offerings including restaurants, pools, zoos, information buildings, camping sites and many more that are available in the park’s enjoyable, stress-relieving and safeguarded settings. And through the company’s best efforts in promoting the products in print, radio, television, public relations and personal selling, this will increase the customers in large scales. Having those products, the company aims to provide a globally-renowned entertainment and bring delight to its valued customers especially families, students, and foreign tourists here in the Philippines. Other than that, the organization also wants satisfaction from its employees and, at the same time; focus on its environmental responsibilities. World Wide Wonderland has a World Adventure coaster targeting the youth (specifically students) to enjoy a tour like the customers are travelling to different countries around the globe. For its European Castle Hotel, the company targets families and unwinding professionals that wish to have an overnight stay in the said place. And lastly, the Barangay Filipino Museum that would mainly target foreign tourists so that these people can be informed about all of the facts of Negros and the rest of the Philippines. Differentiating the type of business service offered, from that of the competition, will assist not only in building the theme park as a whole, but will attract more customers, who require a higher level of quality service and recognition than they can receive from other tourist spots. This will provide World Wide Wonderland with an opportunity to step up as regards servicing families, students and tourists with a world-class experience. Satisfied guests are critical to the success of themed visitor attractions. The backbone to having satisfied guests is good management and this is what the company in doing. Unlike most companies, we introduce our customers with utmost care and support services. CURRENT MARKETING SITUATION (TRENDS) The theme and amusement park industry has been around for more than 50 years and, like any other industry, it has evolved through the years to help guests escape from real life, if not for a few hours, at least for a few moments on its attractions. The theme park market has reached maturity and as time passed by. There have been many trends over the years and as the decades went by, theme park operators began to realize that it was not just thrills that would keep bringing back their customers. Applying themes to their attractions would help as well. Sure, a person could build the fastest roller coaster, but if another person added a theme or story to it then you added a dimension to the attraction that made it unique. Putting a personality to a roller coaster ride thus became a trend that still holds today (Scopa, 2005). One of the trends that caught on was the acknowledgement that guests could easily become bored with an attraction or a theme park. To many people boredom is related to predictability. Many guests loved the anticipation of experiencing a favorite moment in an attraction, but there was always that need for adventure that would creep in as well. Nothing is more constant than change in attractions industry. The company is witnessing the transformation from theme parks into integrated resorts to cater to staycation trends wherein people would want to stay overnight in a certain place. Parks operators and manufacturers are also employing new strategies to focus on innovation and reinvestment in guest experience to serve increasingly discerning market. Moreover, theme parks take into consideration several parts of the society when making future plans like the socio-cultural aspects. The children, teenage subcultures and their families are increasingly powerful consumers so it is important that the company gives them world-class entertainment. On the contrary, people will grow older that is why we need attractions to encourage and entertain elderly people. Theme parks are an important part of the whole tourism and recreation industry. So they are connected to air, bus and car travel. These types of businesses must react environmentally friendly as far as possible. At least they will have to be involved in environmental organizations and conservation themes. All these parts which are decisive for the future of the business belong to the Macro environment of the company. Technology is getting more and more sophisticated. This is going to influence theme parks and their attractions in a crucial way. With the growing use of high technology products, theme parks will be constructed around virtual reality, simulations and spectacles creating conditions of hyper reality. Amusement park owners can have cost effective methods, reach hundreds more people, places photos of the park on their website and offer the ability to communicate with prospective customers in real-time, which consumers really like. Below is the summary of the main micro and macro environmental trends in Theme and Amusement parks. 1. Everything will be based on a scripted theme. The attractions reflect the theme and intensify it. 2. A diverse array of components assembled to produce a wide range of experiences. All the senses of the visitors should be attracted. With the help of lots of different attractions, they will make hundreds of various world-class experiences. 3. Theme parks will be converted into hotels, resorts, etc. 4. As the world changes, theme parks must act in an environmentally friendly way. 5. With the growing use of high technology products and online advertising, theme parks will be more exciting, sophisticated, vivid, and real. An amusement park usually has a wide variety of fun entertainment for the general public. Also called an amusement park, there are many thrilling rides and other activities for the whole family to enjoy. Most of these parks have rides available, small shops, animal attractions, arcades and lots of places for people to dine and drink. Generally, an amusement park will be at least 200 acres in size. Some of them offer hotel rooms and amenities so that people can stay indefinitely. There are usually fees for parking and admission. A theme park might be available all year long or it might open only during certain seasons. The main point of this business is to generate profits and the business will gain profits through its services offered. Fees from the entrance, food, establishments and sponsors who will be more than willing enough will make excellent profit so it can have good ROI. About 55% of the income brought in at an amusement park comes from the fees charged for admission. The rest of the profits are a result of the sale of food and products that people buy in the little shops. The profits for these parks depend primarily on how the economy is doing. Most of the rides at an amusement park are operated by computers now, so they are easier to take care of and do not need constant maintenance. This saves an amusement park owner a lot of money each year. Marketing for theme park owners, on the other hand, can cost a lot of money each year. A lot of these business owners use television marketing, direct mail marketing and radio ads for most of the marketing methods because these are the most effective advertising tools in promoting the business. Channel. The business involves both retail and wholesale but focuses more on wholesaling due to the fact that many other businesses revolve inside the theme park. The business focuses on wholesale to the fact that it sells goods or services to those buying for resale or business use. This would involve selling and promoting, buying and assortment building. Another is that many owners of amusement parks have switched channels on theme park marketing and have moved to Internet marketing. This kind marketing involves consumers that are now online; shopping, paying bills, buying products and looking for entertainment and vacation ideas. Profit The average profit margin for amusement and theme parks is at 5. 4 percent. The reason for such a low margin is the high cost of staffing, maintenance, and heavy capital outlay of operating such an attraction (Orlando Sentinel, 2010). The profit margin for these parks would be even lower if it werent for their seasonal hiring. With so many employees needed for administration, merchandise selling, ride operation, food and beverage and mechanical positions, the cost would be even higher if a full staff were kept year-round. That is why most of the theme parks offer prices that are expensive. Cost It is general knowledge that this would take a lot of effort, manpower, and most importantly money. From constructing the establishments and rides, to the food that the park will serve, and finally the people who will help the company bring joy to customers, they are all going to cost a lot of money. So, ultimately this theme park will need large amount of cash to use. SURVEY QUESTIONNAIRE AND RESULTS (Interviewed 50 respondents including students and adults inside and outside the university. This is a basis of market segmentation).

Wolves Essay -- essays research papers

Wolves The wolf was once a much slandered animal. In the western world, people feared and hated wolves, and this legacy is reflected in stories such as Little Red Riding Hood and The Boy Who Cried Wolf. In these popular children's tales the wolf is made out to be a prowler and a killer of livestock and people. There is some basis for The Boy Who Cried Wolf, for wolves have killed cattle and sheep. But what of Little Red Riding Hood? There are no records of wolves killing humans in Canada or the United States. Yet, when wolves were spotted near rural communities, fear used to grip the populace, but over time this has become less prevalent. Today, many people know that scientists studying wolves have lived very close to dens where there were pups without being attacked. They have even taken pups from a den without being injured. The parents have usually run away, returning later to take their young to a more private den or to a rendezvous site (a place where the pack meets). In areas where wolves are hunted or trapped they fear people and are very wary. However, in remote places, such as in the Canadian Arctic, they show little fear and will often allow people to live near them. Two hundred years ago, Canis lupus, also known as gray wolves, were more widely distributed than any other mammal of historic times. They lived in large areas of North America, Europe, and Asia; the only places they could not occupy were deserts, tropical rain forests, and peaks of the highest mountain ranges. Wolves still live in large areas of the northern hemisphere; however, their primitive range has been greatly reduced due to changes in the landscape and people's efforts to exterminate them. In North America, wolves have been exterminated in the Atlantic provinces, Mexico, the United States (except Minnesota, Alaska, and some of the western states), and the heavily populated areas of southern Canada. They are still common in lightly settled portions of Canada from Labrador to British Columbia and in the Yukon and Northwest Territories. The red wolf was once common in the southeastern United States. It has been eliminated in the wild. However, through a captive breeding program, the species is being reintroduced into its former range. It is virtually impossible to describe the typical appearance of wolves. Wolves of many large arctic islands and Greenland usually appear sn... ...ibou numbers decline. Wolves have already been exterminated in many places. However, there may be less danger of such excesses in the future, as wolf control is increasingly based on biology rather than emotion. There is now a greater awareness among people that the killing by wolves of deer and other prey species, which we may want for ourselves, is not a sufficient reason for the extermination of wolves. Sometimes populations of game animals are critically low, so on biological grounds wolf control could be justified; however, control programs are always opposed by ever-increasing urban populations. Proposed wolf culls have become major political issues in many areas in North America. When controls are carried out, they need to be done to meet certain criteria, which are based on sound scientific information and stewardship of wildlife populations. In the wilderness scheme of things wolves play an important role. And from a human point of view, the great interest and value of having this intelligent animal as part of our wilderness heritage should be sufficient justification for allowing it to survive in a wide variety of wilderness and semi-wilderness areas all over the world.

Concept Analysis of Pain

Concept Analysis of Pain Kwanei Holloway Austin Peay State University Abstract Pain has always been a major factor in healthcare. This paper will describe pain as it relates to nursing, medicine, and physical therapy. All of the information gathered is analyzed in reference to how pain relates to hospital stay, rehabilitation, and prevention. I will ultimately give an overall picture of the importance of pain and how it relates to nursing as well as other disciplines. Introduction This paper is a concept analysis of what is known as the fifth vital sign PAIN.As stated by Hsiao, Wu, & Chen (2013), Nursing staff are the major group of healthcare professionals who perform crucial functions in delivering nursing care to inpatients. I will attempt to describe pain as it relates to nursing, medicine, and physical therapy. When selecting a concept, I began by thinking what is an important factor in the nursing field and could be analyzed in more detail. Pain is a factor that is thought of d ifferently by many. It is a very subjective factor and that applies to the patients, physicians, and nurses.Yes, it is the patient that feels the pain but it is the physician who writes the orders and the nurse who transcribes it. I then figured that this area of nursing practice would be a great concept to analyze. Pain is a feeling triggered in the nervous system. Pain may be sharp or dull. It may come and go, or it may be constant. You may feel pain in one area of your body, such as your back, abdomen or chest or you may feel pain all over, such as when your muscles ache from the flu. Pain can be helpful in diagnosing a problem.Without pain, you might seriously hurt yourself without knowing it, or you might not realize you have a medical problem that needs treatment. Once you take care of the problem, pain usually goes away. However, sometimes pain goes on for weeks, months or even years. This is called chronic pain. Sometimes chronic pain is due to an ongoing cause, such as canc er or arthritis (â€Å"Pain†). In the nursing field as well as any other areas of healthcare, pain is a vital factor when dealing with the delivery of care. It is the responsibility of he physician to ensure relief from pain by writing the orders, it is the responsibility of the nurse to carry out the orders and give the pain medication, and in the area of physical therapy it is their responsibility to ensure that the patient is medicated to retrieve the best results while in therapy. Purpose and Method The purposes are to define what pain is considered to be in relationship to the patient, nurse, physician, and physical therapist. It is also, to find out the subjectiveness of the fifth vital sign and to explore pain as it relates to hospitalization.Walker & Avant (2005) guided this concept analysis study. Pain in Nursing Almost 35 million patients were discharged from U. S. hospitals in 2004; of these patients, 46 percent had a surgical procedure and 16 percent had one or mo re diagnostic procedures. Pain is common, and expected, after surgery. Recent data suggest 80 percent of patients experience pain postoperatively with between 11 and 20 percent experiencing severe pain, (Wells, Pasero, & Mcraffery, 2008).There are many contributing factors as pain relates to nursing. Pain is the main factor that contributes to a person deciding to seek medical attention. It is very important to include this as a part of an assessment because it can affect so many other things. It can cause a blood pressure to be elevated, it can increase a blood glucose, and can cause an overall disturbance in the patients’ hospital stay or ADL’s. In nursing our aim is to provide comfort and surrccome to the patients’ needs as a part of their overall care plan.As stated by Wells, Pasero, & Mcraffery, 2008, inadequately managed pain can lead to adverse physical and psychological patient outcomes for individual patients and their families. Continuous, unrelieved p ain activates the pituitary-adrenal axis, which can suppress the immune system and result in postsurgical infection and poor wound healing. Pain in Medicine Medical professionals have a big impact on pain as it relates to healthcare. Physicians have to generate a care plan that will ultimately be in the favor of the patient as far as relieving the pain in the most appropriate way.This is achieved by not altering consciousness, normal ADL’s, and in the correct combination with other medications. The board strongly urges physicians and surgeons to view effective pain management as a high priority in all patients, including children, the elderly, and patients who are terminally ill. Pain should be assessed and treated promptly, effectively and for as long as pain persists. The medical management of pain should be based on up-to-date knowledge about pain, pain assessment and pain treatment (â€Å"Guidelines for prescribing,† 2007).Nociception is the term used to describe t he neural processes by which a noxious substance or a tissue damaging event such as surgical incision is perceived as pain (Fig 1). This is described in four stages, transduction, transmission, perception and modulation. Nociception involves a complex interaction between the peripheral nervous system (PNS) and central nervous system (CNS) as well as an evaluation of patients’ pre and post-operative psychological and environmental influences (Wood, 2010). Pain in Physical TherapyDue to factors such as surgery, stroke, or basic deconditioning there is a need for rehabilitation. Physical Therapist play an essential role in the patients’ road to recovery. A patient-centered rehabilitative approach that emphasizes restoration of normal movement and function incorporates physical therapy as a vital component of the collaborative approach required for effective pain management (â€Å"Physical therapy for,† 1998). Overall therapy is lessened with pain. Patients move slo wer and are less involved with therapy if pain is present.Therapy is put into place to get those muscles moving and to later decrease pain as it relates to contributing factors. These factors may include surgeries (hip or knee replacements), amputations (AKA, BKA, Metatarsal, and digital), and weakness (from CVA, CABG, and decrease movements). Patients with pain perceive an equivalent level of exertion at a significantly lower level of performance, a finding accounted for by both central (cardiorespiratory) and peripheral (muscle strength and recruitment) factors.Inactivity also deprives bones, joint cartilage, and connective tissue of the mechanical stress necessary to maintain tensile and compressive strength and elasticity. Evidence is building that motor control and proprioceptive efficiency are altered, balance is compromised, and reaction times are slower in persons who are unfit or have pain (â€Å"Physical therapy for†, 1998). Essential/Critical AttributesAccording to Cheng, Foster & Huang, (2003) the critical attributes of pain include: (a) unpleasant and distressful experiences originating from physical sensation and having both positive and negative meanings for an individual; (b) an individual human experience; (c) a state of feeling in both sensation and emotion (verbal), and behavioral components; (d) physical and psychological responses to the stimulus; (e) function of pain, including protective and warning signs; (f) pain responses are learned and influenced by personality, environment, emotions, social and culture. Model Case Mrs.K is a 37 year old female with recent diagnosis of breast cancer. She has recently undergone a mastectomy and is now in the hospital for recovery. Upon the nurses’ hourly rounds she discovered Mrs. K crying, when asked what the nurse could do to help she stated that â€Å"I am in pain and can’t believe that I only have one breast now, I’m ugly and would have never thought it would hurt thi s bad†. The nurse consoled her and brought pain meds. When returning the patient thanked the nurse for the talk and she stated that the pain had eased and she always thought she would have breast cancer due to both her mom and grandmother having it.Related Case Mrs. T is a 35 year old female with breast soreness and discharge. She was found to only have fibroid tissue and nothing metastatic in her breast, but due to family history she elected to have bilateral mastectomies. She was ordered a PCA pump due to hourly pain calls and when the nurse entered the room she was crying c/o continuous pain. She states â€Å"I can’t take this pain and I hate I did this†. The nurse took time to talk with the patient and informed the physician of her crying and got new orders.During the nurses hourly rounds she found her sitting up on the phone and she explained to the nurse that she feels better and glad that she had the surgery because she did not want to go through what her mother and grandmother went through with breast cancer. Contrary Case Mr. M is a 45 year old that had a motor vehicle accident when he was 20 and is now going from hospital to hospital to try to get IV pain medication. He complains of back pain but x-ray results does not show any back issues but due to out of control behavior he is admitted and given pain medication. He refuses all by mouth pain meds and demands IV meds.He does not show any signs of pain when assessed and all staff believes him to be addicted to pain medication. A psych consult is ordered. This patient is not in true pain but has psychiatric issues. Antecedents and Consequences For this particular concept the antecedents and consequences would be all interrelated due to the fact that in nursing, medicine, and physical therapy the same factors apply for pain. Environmental, personal and cultural values act as antecedents related to the concept of pain. The consequences of pain are related to pain reaction and the ind ividual's own interpretation of the meaning of pain.Pain reaction has a more physical and biological focus; coping with pain refers to the perception of pain and is psychologically focused (Cheng, Foster ; Huang, 2003). When thinking of environmental, personal, and cultural values you begin to think of things such as the patients comorbidities, what the patient perceives as pain, and in their culture how is pain thought of. In many cultures it may be thought of that you must tolerate pain as long as you can while in other cultures their pain threshold is low so any uncomfortable feeling renders a pain medication.Consequences ultimately come from the patient themselves, what is perceived as pain and their history of pain. For example, a patient that has had a laminectomy may think because the pain was horrific the first time that it will be the same the next time, expecting the same relief factors even if the pain is not the same. Empirical Referents Empirical Referents are stated as what it used to measure the concept. Pain is very subjective and they have yet to invent an objective test that will give you the accuracy of some ones pain. They are measured by a scaling system.Most scales make pain measurable, and can tell providers whether your pain is mild, moderate or severe. They can also set baselines and trends for your pain, making it easier to find appropriate treatments. This includes the Numerical Rating scale asking for a pain rating on a scale of 1-10, the Wong-Baker scale which will include facial expressions to emphasize pain, or the Verbal-rating scale and in this scale the patient must complete a questionnaire to describe their pain in more detail (Jacques, 2010). Implications in Nursing In nursing pain is a major factor in treating the patient as it relates to the overall hospitalization.How are we able to get the blood pressure down if the patient is in constant pain? or how can I discharge a patient when they are in a lot of pain? Implications in nursing goes for all aspects of nursing from skin integrity to normal ADL’s. A patient may not turn as they should because they are in the fetal position due to pain which could cause skin issues or pain will cause them not to take a bath as usual. Pain can even cause depression as it decreases normal functioning. This concept is very important in the nursing field and should be treated and assessed appropriately.Conclusion In conclusion I chose to analyze pain as it relates to nursing, medicine, and physical therapy. It is a major factor in that it is related to all aspects of care that is received by these disciplines. Pain is the main contributing factor that causes someone to seek medical attention. Without pain we could have serious issues being that we would not know when were sick, burned, or injured. Pain is very important in healthcare and applies to nursing, medicine, and physical therapy. References Desai, G. , ; Chaturvedi, S. (2012). Pain with no cause! urses ' perception. Indian Journal of Palliative Care, 18(3), 162. Retrieved from http://www. medknow. com Hsiao, J. L. , Wu, W. C. , & Chen , R. F. (2013). Factors of accepting pain management decision support systems by nurse anesthetists. BMC Medical Informatics and Decision Making, 13, 16. Retrieved from http://www. biomedcentral. com/bmcmedinformdecismak/ (n. d. ). Pain. Med Plus Trusted Information for You, Retrieved from http://www. nlm. nih. gov/medlineplus/pain. html Walker, L. & Avant, K. (2005). Strategies for theory construction in nursing (4th ed. ).Upper Saddle River, NJ: Prentice Wells, N. , Pasero, C. , & McCaffery, M. (2008). Improving the quality of care through pain assessment and management. Patient Safety and Quality: An evidence based handbook for nursing, Retrieved from http://www. ncbi. nlm. nih. gov/books/NBK2658/ (2007). Guidelines for prescribing controlled substances for pain. Medical Board of California, Retrieved from http://www. mbc. ca. gov/pain_guidelines. html Wood, S. (2010). Post operative pain 1: Understanding the factors affecting patients’ experiences of pain. Retrieved from http://www. nursingtimes. et/nursing-practice/clinical-zones/pain-management/post-operative-pain-1-understanding-the-factors-affecting-patients-experiences-of-pain/5021696. article (1998). Physical therapy for chronic pain. 6(3), Retrieved from www. iasp-pain. org/AM/TemplateRedirect. cfm? template=/CM/†¦ Cheng, S. , Foster, R. , & Huang, C. (2003). Concept analysis of pain. Retrieved from www. tzuchi. com. tw/file/DivIntro/nursing/content/92-3/3. Jacques, E. (2010). Using pain scales to effectively communicate pain intensity. Can you rate your pain? , Retrieved from http://pain. about. com/od/testingdiagnosis/a/pain_scales. htm

Bacteria & History and ecology

The word ‘bacteria’ is normally associated with disease-causing organisms, like the Streptococcus bacteria. While there are a considerable number of pathogenic bacteria that are notorious for such diseases as cholera, tuberculosis, and gonorrhea, such disease-causing species are a comparatively tiny fraction of the bacteria as a whole. There are approximately five nonillion (5? 1030) bacteria in the world. Bacteria are so widespread that it is possible only to make the most general statements about their life history and ecology (Berkeley Free Clinic, 1).There are bacteria that plays important role in the global ecosystem. They may be found on the tops of mountains, the bottom of the deepest oceans, in the guts of animals, and even in the frozen rocks and ice of Antarctica. One feature that has enabled them to spread so far, and last so long is their ability to go dormant for an extended period. There are specific methods in order to study and observe bacteria because th ey are not visible to the naked eye. Even with the use of microscope they are very difficult to spot without adding some stains that would render them visible.DETAILS Properties Bacteria are prokaryotic (no membrane-enclosed nucleus) that do not contain mitochondria or chloroplasts. They have single chromosome that are composed of close circle of double-stranded DNA with no associated histones. If flagella are present, they are made of a single filament of the protein flagellin; there are none of the â€Å"9+2† tubulin-containing microtubules of the eukaryotes (Users. rcn. com, 1). Their ribosomes differ from those of the eukaryotes. Bacteria have a rigid cell wall made of peptidoglycan that allows them to survive at long periods of time.They do not perform mitosis and mostly reproduce through asexual reproduction. Any form of sexual reproduction varies differently from the eukaryotes because they do not perform meiosis. The plasma membrane is a phospholipid bilayer but conta ins no cholesterol or other steroids (Users. rcn. com, 1). Most of bacteria form a single spore when their food supply runs low. This is the reason why pathogenic bacteria become infectious at the later part of the attack. Most of the water is removed from the spore and metabolism ceases.Spores are so resistant to adverse conditions of dryness and temperature that they may remain viable even after 50 years of dormancy (Users. rcn. com, 1). Environmental and Nutritive Requirements Most bacteria can be classified according to their response to oxygen. These are consist of three distinct group, Aerobic bacteria which thrives in the presence of oxygen, Anaerobic which cannot tolerate gaseous oxygen, and facultative anaerobes which prefer growing in the presence of oxygen but are able to survive without it. Aerobic bacteria require oxygen for their continued growth and existence.On the other hand anaerobic cannot survive in the presence of gaseous oxygen. These bacteria live in deep unde rwater sediments, or in oxygen deprived environment such as those that cause bacterial food poisoning. Bacteria also differ in the mode and source of their energy. There are Heterotrophs that derive energy from breaking down complex organic compounds that they must take in from the environment. This includes saprobic bacteria found in decaying material, as well as those that rely on fermentation or respiration.The other group, the autotrophs, fix carbon dioxide to make their own food source; this may be fueled by light energy (photoautotrophic), or by oxidation of nitrogen, sulfur, or other elements (chemoautotrophic) (Berkeley Free Clinic, 2). Chemoautotrophs are uncommon while photoautotrophs are more common and quite diverse. One particular bacteria offers a very interesting behavior because they use hydrogen sulfide as hydrogen donor, instead of water like most other photosynthetic organisms, including cyanobacteria.There are green sulfur bacteria and purple sulfur bacteria, Oth er Bacteria include the cyanobacteria, and purple nonsulfur bacteria. Role in the Global Ecosystem Bacteria play a very important role in maintaining the balance of our ecosystem. Through their ceaseless labor, they cycle nutrients such as carbon, nitrogen, and sulfur. For example without bacteria to decompose rotten objects, our CO2 would have been depleted and all our plants would have ceased to exist. The process of decomposition releases nutrients back into the environment for plants and other living organisms.Bacteria also cycle nitrogen in the soil. Nitrogen is important for plants health and growth. Without these cycling processes all our plants would die and then humanity would have ran out of food. Gram Stain Bacteria happens to have a refractive index similar to water, therefore they are very difficult to spot from an aqueous sample. To solve this problem, biological stains are added so that microorganisms can be visualized. Stains are classified as either simple or differ ential.Simple stains impart the same color to all structures whereas differential stains contain more than one dye and impart different colors to various structures(Delost, 39). One very important method is the Gram Stain, which was first introduced by Hans Christian Gram in the late 1800s. It has been modified and adjusted numerous times. The Gram stain will differentiate gram-positive bacteria from gram-negative bacteria (Delost, 39). Gram stain is one form of a differential stain that is widely even in the methods.It consists of several reagents such as crystal violet, Gram’s iodine, ethyl alcohol or acetone, and safranin O or carbulfuchsin. Bibliography Unknown. (2000). Bacteria: Life History and Ecology. Retrieved on February 18, 2007 from the Berkeley Free Clinic website: http://www. ucmp. berkeley. edu/bacteria/bacterialh. html Unkown. (2006). Bacteria. Retrieved on February 18, 2007 from the Users. rcn. com website: http://users. rcn. com/jkimball. ma. ultranet/Biolog yPages/E/Eubacteria. Delost, M. Introduction to Diagnostic Microbiology. (1997). Harcourt Brace & Company Asia Pte Ltd. .

Harry Potter Discussion Board Example

Harry Potter Discussion Board Example Harry Potter Discussion Board – Coursework Example The Magic of Harry Potter and the Sorcerers Stone I believe that Harry Potter and the Sorcerers Stone is incredibly successful because of multiple factors: lovable characters that the audience can identify with and root for; imaginative settings that children and adults can delight in exploring; an exciting plot that promises new happenings and outcomes; and the universal themes of friendship and finding one’s identity. First, this book has characters that many readers can fall in love with. They will love Harry and root for him because of his traumatic childhood experience. They will want him to be prepared in defeating Voldemort. They can relate with him, Ron, and Hermione too because these kids want to find out who they are and to prove themselves worthy of being in Hogwarts. The audience can also love to hate Snape for being the archetype of the detestable teacher. These are characters that arouse emotions and motivate people to read more about them. Second, the settings a re creative and new. Hogwarts and its nearby environments are treasures of new sights, sounds, tastes, and scents that can pique and hold the interest of various people. Third, the plot is engaging and exhilarating. It has numerous action-filled sub-plots and enough drama to keep the story â€Å"real.† Finally, the themes of friendship and finding one’s identity are important themes to numerous people. Human beings want to find real friends and to uncover and develop their real identities. Harry Potter and the Sorcerers Stone is successful because it has magic without being unrealistic. It can cast a spell on people who like characters who have goals and challenges in life and who want to live in fantastic worlds where good can trump evil.

Strategy for Introducing a New Product Research Paper

Strategy for Introducing a New Product - Research Paper Example The company has loyal customers in the market because of its persistence. Today, it is still a dominant player in the tea industry in most of its countries. Tetley is just about to introduce a new product into the market. However, before the launch, the company needs to establish whether the market will accept the new product. In addition, the company needs to identify the specific target in the market. This paper will examine the market trends in order to provide the answers to these issues. Tetley has had immense impact in the market. It is through their marketing strategies that they have managed to win a large market share. Through this therefore, the company owns the credit for innovating tea bags in the early 1900s although the venture came after accidental realization that tea bags were a possibility in packaging. The company has its roots in the United Kingdom where its founders started out venture. The company has posted growth in several other countries. Despite the competi tion that has grown over time as new entries in the tea industry, Tetley tea still dominates the United Kingdom market. Tetley group has several sister companies operating separately. The entire sister companies offer unique brands to the region in which they operate. In 2011, Tetley dominated the market achieving 24% retail value in Canada. Tea products had a retail growth value of 4%. The volume growth in the same year was 1 %. The Canadian market posted C$ 547 million. The Canadians prove to be a good market for tea. They easily try out new tea products with the right persuasion (Masterson and Pickton, 2010:85). Tetley’s products did well in the Canadian market with black tea special brand scooping a 44% share followed by green tea with 31% while standard black tea got 18 %, which was a one percent rise from 2010. In addition, the herbal tea and fruit ranges of products as well as the color therapy proved a real success in the Canadian market. Future prospects indicated a growth in tea sales by 2016. In the United Kingdom, tea prices recorded an increase in 2010. Black tea made more sales in the market though it portrayed minimal growth. Herbal and green tea exhibited more growth in the market because of the health benefits. 12% of total sales of tea were the herbal and green tea. Most of the sales of tea were to people above 65 years accounting for 88% of consumption. Tea consumption was relatively lower for the younger generation. Tea is receiving competition from other products among the younger generation and the 90% breakfast tea sales were going down. The trends in 2011 changed because of the campaigns on the benefits of tea. This year saw Unilever take a lead in the percentage of sales. In the United States of America, tea exhibited an increase in popularity in 2011 because of the increased awareness of tea benefits on health. Tea posted a growth of 2% reaching 72278 tonnes. In this market, Unilever was leading in the percentage of sales. The tea industry in America is likely to show a 10% growth by 2016. The healthier products such as herbal tea, iced tea, and fruit-varieties stand a chance to indicate growth because of the health benefits (Masterson and Pickton, 2010: 86). The Indian market trends portrays that black tea, the standard variety still dominates because of the Indian cultural and traditional set up (Pride et al, 2011:131).

Critical appraisal of a nursing research study article Essay

Critical appraisal of a nursing research study article - Essay Example ties are being carried, it is important that there be an effective system by which these researches can be appraised to determine their validity and reliability. Wood (2010) explain that reliable research studies provide quality information that can be used in making changes that can cause better and effective systems and human environment. One of the ways of making such a process is conducting a critical appraisal process; critical appraisal can be defined as the process involving careful and systematic examination of research for judging its trustworthiness, relevance and value for their particular contexts. According to White (2008) critical appraisal is very important especially for health professionals, considering the fact that they handle critical matters of human life. Many of the research studies that are carried out on human and animal health are often treated with great esteem considering the changing health problems and challenges in the human environment (Pignone 2005, p. 67). According to Armstrong (2012) an effective healthcare process can only be managed by an application of effective and reliable strategies derived from research studies, which underpins the need for their critical appraisal. This paper examines a critical appraisal for a research that was conducted on the participation of patients in the NHS Bowel Cancer screening programs. The critical appraisal of this research process will undertake the qualitative approach, examining the methodology that was used and its effectiveness (Wake 2013, p. 31). In this case, it will be possible to assess the effectiveness of the research process. According to McCabe (2009) qualitative research processes are known to use approaches that deliver quality information from resource persons, most of whom are carefully selected for the research process. The process of critical appraisal aims at assisting people to develop necessary skills that can help to make sense of various scientific evidences. This

Intermediate Microeconomic Theory analysis paper Research

Intermediate Microeconomic Theory analysis - Research Paper Example As noted in the recent market trends the competitive pressure arising from initiative entry in airlines routes have increased drastically. Consequently, Airline carriers are forced to improve on operational efficiency that results to lower fares and heightened competition. This volume intends to analyze the Airline market prior the entry of Frontline airlines and the implications after its entry. The intermediate microeconomics theory analyses business situations where a market or industry depends on a pricing system. This is in cases where the pricing system provides guidance in making decisions that dictate the rates of consumption, production, and distribution of services and goods. The theory further analyses the economic behavioral patterns and the decisions made by economic agents at their individual capacities. Additionally, the theory uncovers the consequent implications felt in market economies when trends alter relative market prices that play the role of economic signals policy makers use to make decisions (Williams, 2014). Prior the entry of Frontier Airlines, there were limited aircrafts, most of the operational airlines had their consumers only being very wealthy and prominent people. Therefore, the demand for airlines was not only low but also expensive. In this era, the airline companies had a complete monopoly over the business arena. Against this background, the market price for the services offered was very expensive. Additionally, the consumers of the services never got of high-quality services because there lacked any competitors to threaten the service providers with the loss of their customers. Therefore, at this period with no perfect competition, the industry was very exploitative to consumers. Furthermore, there were high average market prices on services in the absence of substituent service providers. As revealed by data examination from the transport department, there was an increase in the number of airline

Recommendation paper about google Essay Example | Topics and Well Written Essays - 3500 words

Recommendation paper about google - Essay Example Based upon the SWOT analysis, the summary of the important recommendations that are provided for the direction of Google’s strategy are as follows (a) tailoring its product to suit local markets rather than adopting a one-size-fits-all strategy (b) integrating its products to allow customers to shift seamlessly from one product to the other (c) moving into the social networking domain and (d) addressing privacy issues in order to promote widespread use of its products. The company is named â€Å"Google†, a play on the word â€Å"Googol† that is a mathematical term for the number 1 followed by a hundred zeros.(www.google.com). This represents the spirit of the company, to be constantly innovating and branching out into new areas, so that the company has now evolved into a global enterprise employing 16,800 people and reporting revenues of $16,594 million for the fiscal year ended December 2007.(Datamonitor, 2008). But as this report will demonstrate, staying at the forefront of innovation is important, but so is consolidation of the gains that Google has achieved so far, as well as effective integration and streamlining of its products and operations. Google has been at the forefront of innovation over the years, continuously adding improved features. Some of these include AdWords, Google Scholar, Google Earth and Froogle. Over a short period of twelve years, the company has evolved into a global technology leader that is focused upon improving the ways in which people connect with information. It occupies a strong market position through the use of its proprietary technology and infrastructure (DataMonitor, 2008). It’s AdWords and AdSense programs have been significant generators of revenue from advertising. But the weaknesses in the company are the failure to effectively integrate products, and a weak presence in the social networking domain. The company also faces competitive threats from companies

Speed Acceleration And Velocity

Speed Acceleration And Velocity In this chapter we will look at the concepts of speed, acceleration, and velocity. As we all know gravity is a large factor in the acceleration of an object. For the purposes of this chapter we will differentiate between linear and vertical acceleration as being objects that move linearly or horizontally i.e. linear acceleration, versus objects that fall, fly, or are thrown etc. i.e. vertical acceleration. Vertical acceleration is much more governed by the force of gravity and is covered in greater detail in chapter 12 Newtons Laws. A short section at the end of the chapter addressing vertical acceleration is however included to put the area into context. You may have heard the old adage Speed kills. And you know whether you are driving your car or playing sport its a dangerous variable. Fast athletes are very difficult to handle, as are fast cars. However, having speed is of vital importance in sports. In this chapter well look at speed, velocity and acceleration and the factors that influence them. Speed, acceleration and velocity are all different. If you have ever watched a 100 meter race, you will notice that some athletes start faster than others, so their acceleration is different. Athletes finish the race at different times so their speed is different and athletes reach top speed at different stages so their velocity is different. The key terms to be covered in this chapter are speed, acceleration, velocity, distance, displacement, vertical and horizontal acceleration and velocity. The variables of speed, acceleration, displacement, etc. are about linear kinematics. Kinematics is a general term related to describing motion. Kinematics is also a branch of mechanics (specifically dynamics) that evaluates moving objects. In order to accurately describe kinematics there are certain terms that we must fully understand. They include the terms mentioned above (speed, acceleration, and displacement) and distance, velocity and position. Accurate understanding of these terms will allow us to accurately describe the movement of any object. There is often a lot of confusion about the terms acceleration, speed, and velocity. We often use the term speed in everyday language to imply all three terms and the word fast is an even more general term. Consider the following: A person can be moving fast and not be accelerating. A person can accelerate fast and not have a high velocity or high speed. A nice sporting example was the great Boston Celtics player Larry Bird. Larry Bird was very quick to accelerate over three or four steps, was not very fast at his top speed. So while Larry was very quick and dangerous over 3-4 steps, he would not make a good sprinter because his top end speed was not high. So if an object is accelerating, it is changing its velocity. Acceleration has to do with the change in how fast an object is moving. Therefore, if an object is not changing its velocity, it is not accelerating. We know that distance and displacement have different meanings. The same is true for speed and velocity. Speed can be considered as the rate at which an object covers a certain distance. Objects that move slowly cover distances in long periods of time, i.e., low speed. An object moving quickly covers distance in shorter amounts of time, i.e., high speed. If an object is not moving at all it has zero speed, zero velocity and zero acceleration. Let us consider some of these simple terms in more detail. Position: Position is simply the location of an object in space. You could consider it using coordinates on a map for example, or on a field, or gymnasium. Displacement: Displacement is simply the straight line distance an object has travelled. Distance: Distance is how far an object has travelled in any direction. It is also viewed as the total amount of displacement (regardless of ending position). Look at this simple example. Lets say a basketball court from baseline to baseline is 25m. If a player runs baseline to baseline and back what is his displacement and distance? Distance. This is the easy one since he ran up and down the court so that is 25m + 25m = 50m. Displacement. Since the player ran down the court and back again he ended up in the same place he started. So even though he covered a distance of 50m his displacement is actually zero, since he is back where he started. Lets say the player now runs up and down the court twice. His distance covered would be 25m + 25m + 25m +25m = 100m. Since he ended up back where he started his displacement is still zero. Finally, lets say the player runs from one baseline to the other and stops. In this case both his displacement and distance are the same at 25m. For the most part we use distance rather than displacement to describe movements as it is difficult to correctly measure displacement as we make a lot of turns when we travel. You say displacement is really like the old saying as the crow flies which means straight line. For example, the distance you travel in a car from New York City to Boston might be 250 miles (but your displacement is only 175 miles). When you drive in a car you get on the highway and follow the roads around the coast, over bridges, around hills, around towns etc. However, when you fly the plane flies right over everything in a straight line and you end up only travelling 175 miles (your displacement). Speed Speed is a very general term. Speed is a scalar quantity and is described as Distance divided by time (D/T, where D=distance and T=time). Scalar implies that speed has magnitude but not necessarily any direction, for example temperature or volume. People often use speed and velocity interchangeably but they are different. Speed relates to the distance an object has traveled, while velocity refers to the displacement that has taken place. So, the speed of an object tells us how far an object has traveled in a given amount of time but doesnt tell us anything about the direction in which it traveled. It all sounds a little heavy on the definitions but these are important. Therefore: Average speed = Distance traveled (m) Time (s) Now there are also different types of speed. We refer to them as average speed versus instantaneous speed. When an object is moving it often changes its speed (or direction) during its motion. When there is a change in speed we can alter our definitions. Instantaneous speed is the speed at any given instant, while average speed is the average of all the instantaneous speeds. For example, lets say a runner runs 400m in 60 seconds and crosses the line at 18 kmh or 5 m/s. This means his average speed over the 400m was 6.66 m/s even though he crossed the line at 5 m/s which is his instantaneous speed at the finish line. In other words, he was slowing down as he was getting to the end. If you have ever ran a 400m race then you will now how tired you are at the end and are definitely slowing down. How did we do these calculations? Average speed = Distance/time 400m/60 seconds 6.66 m/s The instantaneous speed recording of 5 m/s would have been measured with a radar or timing device. You could also look at various split times for different portions of the race. Many coaches do in fact do this, so a 400m coach might look at each 100m split and look at both the acceleration and deceleration patterns and average speeds during each of the four separate 100 meters. Here is another problem for you to try. Can you calculate the average speed of a swimmer that completes the 200m butterfly in 2.15 seconds? Answer: 2.15 seconds = 135 seconds. So 200m/135 seconds = 1.48 m/s A 400m freestyler swims the race in 4.10 seconds. The 200m split was 2.02 seconds. Can you calculate the following? a. What was the swimmers average speed for the race? b. What was the difference in speed for the first 200m versus the second 200m? Answer: a. 400m/250 seconds = 1.6 m/s b. First 200m split = 1.64 m/s Second 200m split 1.56 m/s As you can see, the swimmer slowed down over the second 200m. Velocity Velocity is somewhat similar to speed but velocity involves both direction and speed. So, whereas speed is a scalar quantity, velocity is a vector quantity, that is, it has both magnitude and direction. Velocity also uses displacement as opposed to distance. Remember displacement is measured as the straight line distance an object travels from starting to ending position. Velocity is direction sensitive since it is dependent upon displacement. Therefore, when you calculate velocity, you must also keep track of direction. Therefore, if you say an airplane has a velocity of 600 kmh, you would actually be a little vague. You should really say the airplane has a velocity of 600 kmh North. So, speed doesnt worry about direction, velocity does. Velocity is a positive number as we dont have negative velocity. So to summarize, a airplane traveling at 600 kmh as a speed of 600 kmh. The same airplane has a velocity of 600 kmh, North. Finally, the same airplane probably had little acceleration in the middle of its trip as it would only need positive acceleration and negative acceleration during take off and landing. Here is an interesting and challenging little problem for you to solve. Can you fill in the following table with acceleration, speed, and velocity data? We know the following, the direction of travel is south and acceleration doubles every second. If youre feeling confident you can also try and calculate the total distance that was covered over the 6 seconds. Hint! You can use the velocity for each second to help you. Average velocity = Displacement Time Let try some additional calculation examples: For example, if an athlete runs around a 400 meter track in 50 seconds we can calculate numerous factors. What was the distance traveled? What was the displacement? What was the average speed? What was the average velocity? 1. What was the distance traveled? Answer: Easy enough = 400 meters 2. What was the displacement? Answer: Since the athlete ended up in the same place as they started, displacement is equal to zero. 3. What was the average speed? Answer: Speed = Distance/Time = 400 m/60 seconds = 6.66 m/sec 4. What was the average velocity? Answer: Velocity = Displacement/Time = 0/60 seconds. In this case we end up with a value of zero and in this scenario average speed is a better indicator of overall performance. In many situations we actually calculate average velocity as speed because we cant gather the correct information to calculate speed. For example, if a punt returner catches the ball on the 20 yard line and then avoids a few tackles to ultimately score a touchdown twelve seconds later, we assume the punt returner ran 80 yards. In fact, they may have run 100 yards with all the turning and weaving but we cant accurately calculate the true distance traveled and instead use displacement. For our purposes in sports, thats okay. You try the following problem. Review Problems Can you accurately calculate average speed, velocity, distance and displacement for each of the following situations? Hint: You may not be able to calculate them all accurately. Problem: 1. A punt returner catches the ball on his own 40 yard line and scores a touchdown nine seconds later. 2. A 100 meter sprinter runs the 100 meter in 10.0 seconds flat. Acceleration The law of acceleration is Newtons second law and basically states The change of motion of an object is proportional to the force impressed and occurs in the direction in which the force is impressed. So far we have talked about speed and velocity and performed some calculations. However, while speed and velocity are valuable components, they tend to provide us with summary information and very little about specific detail. For example, if we consider the data for a 200 meter race run in 20 seconds we know that average speed was 10 m/sec. However, we would not know any information about who accelerated the fastest or who was leading after 100 meters. This information is also important as it helps with identifying strength and weaknesses in athletes and in developing training programs for particular athletes. The measurement of acceleration is important. Acceleration is the rate of change in velocity. Therefore, when acceleration is zero, velocity is constant. So when an object changes speed either by slowing up or down, or changes direction, it is accelerating (or decelerating). We can calculate acceleration by measuring the difference in velocity over the time it took for that ch ange in velocity to occur. Consider this: If you were to watch a 100M race the person leading at the 50M mark doesnt always win the race. The reason for this is that runners have different acceleration and deceleration rates, in other words their speed changes. Athletes vary dramatically in their acceleration. Some athletes are very fast over 40M but not over 100M and vice versa. So: Acceleration (a) = Velocity2 Velocity1 Where V2 is velocity at T2 Tim Where V1 is velocity at T1 Sometimes you will see this presented as the change in velocity (Delta sign à ¢Ã‹â€ Ã¢â‚¬  ) or the change in time (à ¢Ã‹â€ Ã¢â‚¬  T) A = à ¢Ã‹â€ Ã¢â‚¬  V à ¢Ã‹â€ Ã¢â‚¬  T Look at the following acceleration example. Question: A sprinter leaves the starting block at 2.5 m/s. One second later they are traveling at 5.5 m/s. What is the acceleration rate? Answer: V2 V1 = 5.5 m/s 2.5 m/s = 3 m/s squared T 1 You will note that we end up with meters per second squared as our answer would really be presented as 3 m/s/s. Heres another problem to try. Question: A punt returner catches the ball standing still and begins to return. Two seconds later his velocity was 5 m/s. What was his average acceleration over the first two seconds? Answer: V2 V1 = 5 m/s 0 m/s = 3.5 m/s squared T 2 So far we have looked at relatively straightforward examples of speed, acceleration and velocity in that they have all been examples of horizontal movement. Now let us discuss the vertical components of projectile acceleration, speed and velocity. Factors Affecting Acceleration Linear acceleration is affected by many factors and you will recall from chapter ? that the mass of an object is a very important one. Heavier objects accelerate more slowly with a given force. This has to do with both inertia and mass. Heavier objects are harder to both accelerate and decelerate. Think about how easy it is to throw a basketball versus a medicine ball. There are some other points to consider when looking at acceleration, speed, and velocity. First, we now know the units for velocity are meters per second (m/s) and meters per second squared for acceleration (m/s/s). For speed they are also m/s. Since acceleration (like velocity) is a vector quantity, it also has direction associated with it. The direction of acceleration depends on two factors: a. Whether the object is speeding up or slowing down b. Whether the object is moving in a negative (upwards) or positive (downward) direction We can simplify this by saying that if an object is slowing down then its acceleration is in opposite direction of its motion. If it is speeding up then its acceleration is in the same direction as its motion. Therefore: Acceleration (m/s2) = mass (kg)/force (newtons) Vertical speed, acceleration and velocity If you were to throw a ball up in the air and then catch it again at the same height as you released it, how would the ending velocity be? Would it be greater, less, or the same as the release speed? If you guessed the same you would be correct. You see, all objects, whether traveling vertically or horizontally, are subjected to the constant force of gravity (9.81 m/s2). This means that as soon as the ball left your hands it started to negatively (de)accelerate at 9.81 m/s2 until it had no more velocity. Then, it started to positively re-accelerate over the same distance (and time) at a rate of 9.81 m/s2 until you caught it again. This is a very neat relationship as it allows us to make many calculations based on this constant acceleration force. Projectiles are subjected to both vertical and horizontal components in their motion. The horizontal components are affected by the mass of the object and the acceleration force as previously mentioned. The vertical components are also affected by these two factors plus gravity. Consider this statement: A ball shot horizontally (at zero degrees) has the same vertical component as a ball that is simply dropped with no horizontal velocity. What this means is that if you were to throw a pass from your chest and it hit the ground 15 meters away 1.5 seconds later, and at the same time drop a second ball straight down from the same height, they would both hit the ground at the exact same time. What this is showing us is that the force of gravity component is acting consistently regardless of whether the ball has a horizontal component or not. In other words adding a horizon tal acceleration component does not affect in any way the force of gravity. Remember also that gravitational acceleration is a vector quantity comprising both magnitude and direction and acceleration is a squared variable to the magnitude of the force of gravity. This means that for every second an object is in free fall it will accelerate by ad additional 9.81m/s2. Thus the total distance travelled is directly proportional to the square of the time. Or we could say that if an object travels twice the time it will travel four times the distance. If an object travels for three seconds it will cover nine times the distance, for four seconds it is sixteen times the distance travelled in the first second. Look at the following. A coin is dropped from a cliff. The table shows how fast it is travelling at different time points. Question: A boy drops a ball from a balcony and records a time of 3 seconds for the ball to hit the ground. At what velocity did the ball hit the ground? Answer: 29.43 m/s How do we get this answer? Well, remember that gravity acts as a constant 9.81 m/s2. What this means is that for each second the ball is in flight it accelerates an additional 9.81 m/s. So: Insert schematic to demonstrate after 1 second = 9.81 m/s after 2 seconds = 9.81 m/s + 9.81 m/s = 19.62 m/s after 3 seconds + 19.62 m/s + 9.81 m/s = 29.43 m/s This is a simple illustration of the concept. Next question, what velocity would the ball have to be released at ground height for the boy to catch it on the balcony? Answer: A minimum of 29.43 m/s. The answer is the same because gravity and acceleration (or deceleration) is working to the same effect when the ball is moving upwards. This is sometimes referred to a negative acceleration. Question. A boy is standing on a balcony and is curious about how high the balcony is from the ground. The boy drops a ball and records the time it takes to hit the ground. It took 3.2 seconds for the ball to hit the ground. The boy concludes that the balcony is 66.7m high. How did he work it out? Well at the end of the first second the ball was travelling 9.81m/s, at the end of the second the ball was travelling 19.62m/s, at the end of the third second the ball was travelling 29.43m/s. If you add these three distances together you get 58.86 meters travelled after three seconds. If the ball travelled another full second it would travel another 39.24m, but it only travelled in this zone for 0.2 sec. So, 39.24m x 0.2sec =7.84m. Now we add the 58.86m + 7.84m = 66.7m, and thats our answer. There are some other factors to consider with vertical projectiles. The pattern of change in vertical velocity is symmetrical about the apex of the trajectory. So not only does the object land at the same speed it was released, it also follows the reverse flight path on the way down. Using these constant parameters we can now extend our calculations into more complex situations. For example, lets say you are watching a volleyball game in a high school gym with a 10 meter high ceiling. An opponent spikes the ball over the net and a player digs the ball at ground level at which time the ball has a velocity of 15 m/s. The question is will the ball hit the ceiling? To solve for this we can use an equation that combines several variables we talked about already. Where: V2 = velocity at time 2 V1 = velocity at time 1 a = acceleration t = time In order to answer this question we need to look at what we know and what we want to know. Well, we want to know the distance (d) the ball travels. We already know a = 9.81 m/s2 and we know V1 = 15 m/s. We also know that at the apex the velocity is zero, so V2 can be set to zero. So now our formula looks like this: 1. 0 = V1 squared + 2ad 2. 0 = (15 m/s) squared + 2 (-9.81 m/s squared) x d Now if we rearrange to solve for d our formula looks like: = (19.62 m/s squared) x d = 225 m/s squared = d = 11.47 m The answer is yes! The ball will hit the ceiling as it will travel 11.47 m. Heres another similar problem: A ball is deflected vertically at 18 m/s and the ceiling height is 11 meters. Will the ball hit the ceiling? Factors affecting projectile motion We have discussed several factors that affect the movement (or acceleration) of an object. The factors that affect vertical acceleration are the mass of the object, the force (speed) of release and gravity. Horizontal acceleration is affected only by mass and force of release (application). Gravity is of course a factor but not in determining its horizontal component. But sometimes we want to throw objects e.g. discus, hammer, etc. and while these projectiles are influenced by force and mass, there are other factors that influence how far the projectile will travel. We generally recognize three other factors that influence how far a projectile will travel when a constant force is applied. They are: 1. Angle at which projectile is released. 2. The speed of release. 3. The height of release. The optimum angle of release to increase horizontal displacement is 45 °. Projectiles released at over or below this angle will not reach their greatest distance. Look at Table 1 to see how distance traveled varies with changing angles of release. You will see from table 1 that the optimum angle of release is 45 ° and after that the decrease in distance traveled is symmetrical as height compromises distance (I.e. follows the same pattern as increasing angle of release up to 45 °). The greater the speed of release the greater the distance a projectile will travel. This holds true simply because there is a greater acceleration force applied in the first place. Simply put, if you want to throw a ball further you need also to throw it harder. The greater the height of release the greater the distance a projectile will travel. If you consider field sports in athletics you will notice that most successful hammer, discus and javelin throwers are taller, giving the mecha nical advantage over shorter competitors in that event. If you were to throw a ball from the top of a building it would strike the ground much further away than it would if you were to throw it from standing on the ground. If you have watched a discuss competition or a hammer throw you might notice that these athletes are quite tall (often over 1.9m). The reason for this is that these athletes have an advantage over their shorter counterparts as their angle of release is already several centimeters higher. Summary This chapter has provided a basic introduction to the concepts of speed, acceleration and velocity. We have also looked at how differentiating between these variables is important and sometimes difficult. Using some known constants, such as the accelerating force of gravity (9.81 m/s2) allows us to calculate and even predict the speeds, velocities and flight paths of selected projectiles. We have also discussed other factors that affect projectile motion such as height and speed of release. While this information is very important, it is a basic introduction as there are many other more complex factors affecting speed, acceleration and velocity. We did not talk about shape or design or, indeed materials which also play a role in the way particular objects react to forces. The factors are extremely important but for now are beyond the scope of this text. Following this section are additional problems for you to solve and practice. Review Problems Can you provide a one sentence definition for each of the follow terms? Distance Displacement Acceleration Velocity Speed Position Scalar Vector A ball rolls with an acceleration of -.5 m/s 2. If it stops after 7 seconds, what was its initial speed? A wheelchair marathoner has a speed of 5m/s after rolling down a small hill in 1.5sec. If the wheelchair underwent a constant acceleration of 3 m/s 2 during the descent, what was the marathoners speed at the top of the hill? A runner completes 6.5 laps of a 400m track in 12 mins (720 secs). He starts half way around the bend. Can you calculate the following? a. Distance covered: b. Displacement after 12 minutes: c. Runners average speed: d. Runners average pace: min/mile = A soccer ball is rolling across a field. At T = 0, the ball has an instantaneous velocity of 4 m/s. If acceleration occurs at a constant -0.3 m/s2 how long will it take to stop? A batter strikes a ground ball with an instantaneous velocity of 18m/s. If acceleration occurs at -0.7m/s2 how long will it take to stop?