The Etruscans – Ancient History

The Etruscans The Etruscan civilisation is distinguished by its unique language and its beautiful art. The Etruscan economy was based on agriculture, trade and mineral resources. We also know the greeks traded with the Etruscans because the Etruscan alphabet is similar to the greek one. The Etruscans are thought to have either been â€Å"native† to Italy or to have migrated from Lydia Lydia ina round 800bc beause of famine. Etruscan cities were very powerful and were though to have been ruled by â€Å"The Etruscan League† which was (according to roman legend) founded by two Lydian noblemen; Tarchun and his brother Tyrrhenus.The league was made up of 12 cities but which twelve exactly is unsure. Each city state met once a year where a leader was chosen to represent the league. The league was both religious and political. Etruscan homes were mud-brick, with timber on stone foundations, some with upper stories. Some etruscns even had underground drains leading to main sewa ge drains located under the streets! Etruscans did a lot of farming, they grew barley, millet, wheat, grapes and other fruits and they raised pigs, goats, sheep, ducks, chickens and cattle. Cattle was used for food and to pull plows and wagons.Etruscan miners dug copper, lead, iron and tin. Metal workers and sculptors turned metals into weapons, utensils, jewellery and sculpture. Etruscans were famous for their art, especially in bronze and clay. Etruscans also enjoyed many forms of entertainment including gambling with ivory dice, music and dancing (for religious reasons and pleasure), playing board games similar to chess and backgammon and watching ant taking part in sports. Etruscans traded goods and metals with the Greeks, Carthage, Syria and many other Mediterranean countries. Merchants traded for luxury items like gold, silver and ivory.Etruscans were also very religious, much like many other tribes of the ancient world. Their religion was deeply influenced by eastern greeks, as was etruscan art. Etruscans had special training institutes to teach their religion and their complex curricula included not only religious laws and theology but also the encyclopaedic knowledge required by the presets, which ranged from astrology to zoology and geology. Etruscans had many gods, whom they worshipped on outdoor platforms made of dirt or stone. Later, they built temples of wood, mud-brick, and clay on stone foundations, which were usually elaborately coloured and adorned.Soothsayers predicted events and the Etruscans believed in omens which were signs of what was to come. They believed that the destiny of man was completely determined by the many gods and deities which etruscans worshipped. They followed complex rituals involving dancing and singing. A lot of etruscan literature comes from burial remains and tombs. The dead were cremated or buried in cemeteries outside each city. Those that were buried were put into individual tombs(if you were rich) called catacom bs and often tombs were filled with works of art and treasures of gold, silver, bronze and ivory.

Marking Time Essay

Marking Time is an Australian mini TV series written by John Doyle and was aired on ABC in 2003. It’s based on a small town called Brakley. The story is told through the eyes of an 18 year old named Hal. Hal falls in love with an Afghani girl, Randa, who recently fled her own country with her father to escape the Taliban. The two face racism and taunts by their community, whose views are influenced greatly by the media and politicians that are expressed during historical events taking place at the time. Soon after 9/11 occured, their home was set on fire by arsonists. Hal’s family let them stay in their home and Randa needed comforting, but Hal and Randa were found in bed together the next morning. Their refugee status got later denied and they were orderd to return to Afghanistan. Hal then went over seas to look for her. This mini-series reflects what’s happening in the world during the years 2000 and 2001 by representing the small town of Brakley as a microcosm. It shows the attitudes Australian’s have towards Asylum seekers. Hal is educated about what’s really going on by his father and his fathers girlfriend and therefore see’s Randa for the person she really is, rather than just a refugee or ‘boatie’ apparently causing trouble. Everyone else in Brackley don’t have the right education and are believing everything the media and politicians are saying about them. The aim of this series is to make us question the information we get fed us, and to hopefully change the assumptions we place on refugees. Marking Time covers the events surrounding the Afghanistan war and Australia’s involvement. This included historical and political events. These events include The 2000 Olympic games and the re-election of the Howard government, The Tampa Crisis, the 9/11 Terrror attack and the Children Overboard affair. These events also include the social aspects in Brakley which led the town to behave in such ways. Australia was the host of the 2000 Olympic games. During this period there was a lot of conflicting opinions regarding the refugee policy as more refugees headed our way. There was also a lot of argument regarding what Australia’s part in the war in Afghanistan was. These two tied together led to suspicion of other cultures, especially refugees. People had little knowledge with what was going on in the war in Afghanistan and about refugees and what they were going through. The social attitude towards what was happening was very mixed. People didn’t have the knowledge for a different view point and they found it hard to understand what was going on, and how they should be responding. Politicians have a large impact on how a society acts towards everything. It’s very easy to believe what they say about anything, especially if all the news were saying the same thing. The Prime Minister of the time, John Howard put the ideas that George W Bush was using in America on Australia. These ideas were that refugees coming to the country were terrorists.

You can chose from the instruction that I attarched Research Paper

You can chose from the instruction that I attarched - Research Paper Example This essay discusses acupuncture and the ways in which its appliances help in the healing process of the body, mind and spirit. Acupuncture relieves the body’s utilities and stimulates the natural self-healing progression by triggering particular anatomic points typically known as acupoints or acupuncture points. The most typical technique employed to stimulate acupuncture points is the injecting of fine, sterilized needles into specific site of the body. Electrical stimulation, heat, or pressure may promote more impact of acupuncture. Additional acupoint stimulation methods comprise of linaments, heat therapy or moxibustion, cupping, manual massage and the use of topical herbal medicines (Bruno, 2012). Customary Chinese Medicine is centered on an early philosophy that refers to the world and the body, in reference of two contrasting energies: yin and yang. If these energies happen to be in balance, then the body is healthy. Force, known as "qi" moves along particular passageways, named meridians, all over the body. This continuous movement of force maintains the yin and yang energies in balance. Nevertheless, if the movement of force gets jammed, the blockage can lead to illness, lack of function, or pain. Acupuncture treatment can cleared â€Å"qi† in the body and arouse function, inducing the physical, natural restoration reaction through numerous physiological systems. Contemporary studies have proved acupuncture’s impact on the cardiovascular system, immune systems and endocrine, nervous system and digestive system. Through stimulating the body’s different systems, acupuncture can assist to heal pain, and enhance sleep and a sense of comfort (Cim.ucsd, 201 5). To start with, the acupuncturist attending will query about the general health history of the client. After that, he or she will scrutinize the tongue’s coating, color, and shape, feel the client’s pulse and maybe perform some extra bodily checkups relying on the person health requirement.

Canadian Blood Services Analysis Research Paper

Canadian Blood Services Analysis - Research Paper Example Introduction It has been the wish of Canadian Blood Services to continue saving lives through supplying adequate blood. Nonetheless, it is quite obvious that the blood supply is barely enough to meet the increasing demand resulting from the ageing population as well as increased number of emergencies and elective surgeries. As a result, this has called for development of efficient and effective strategies aimed at increasing blood supply through increased donors as well as repeat donations. This memo contains SWOT analysis and strategies that can be used to attain increased blood supply are outlined. Discussion Objectives of Canadian Blood Services Canadian Blood Services is an organization that attempts to motivate people to donate blood. The organization’s main objective is to increase the number of donors to approximately 400,000 and donor retention statistics in order to meet the challenges of increasing blood demand. Increasing blood demand is associated with ageing popul ation, increased emergencies and elective surgeries, and the need to reduce waiting time. Attaining this objective however, requires effective motivational strategies. SWOT Analysis In order to identify the best strategies that will lead to increased blood supply from donors, there is need to understand the strengths, weakness, opportunities, and threats surrounding CBS. The SWOT analysis exhibit 1 displays some of the strengths, weakness, opportunities, and threats facing the organization. Market Segmentation Market segmentation is an important aspect in marketing since it provides an overview and vista to identify specific groups of persons or individuals to focus on while using promotional strategies to influence their behaviors. There are two forms or categories of market segment that CBS should focus on in a bid to increasing number of donors and repeated donations. These two categories are non-remunerated and remunerated blood donation market segments. Remunerated Blood Donati on Segment: The remunerated blood donation segment involves individuals who are above 17 years of age. These individuals are reached out to through mails, flyers, or word or mouth. In most cases, the segment obtains financial incentives from CBS hence termed as remunerated blood donation segment. CBS has concentrated so much on this segment given that they are the majority within the country. However, the main challenge the organization faces is to motivate this segment in order to increase blood donations. Non-remunerated Blood Donation Segment: This segment contains three main groups; schools individuals aged between 15 and 24, working individuals between age 25 and 24, and the senior donors aged above 55 years. The first two categories of this segment are often influenced by their friends who have donated before. Other ways through which they are motivated to donate include satisfaction in saving another person’s life, the need for acceptance, friendship, and love, and the conviction that some day they will be in the same situation. Reaching the school and working age is usually through internet, school learning programs, word of mouth, mails, and television programs. Notably, such individuals rarely donate blood since their donations depend on donation program in schools, time, and other obligations. The senior donors (aged above 55 years) on the other hand make donating decisions depending on personal

Violent video games Research Paper Example | Topics and Well Written Essays - 2000 words

Violent video games - Research Paper Example They had not much opportunities other than playing games to spend their free time. However, teenagers of current era are getting more opportunities to spend their free time. The arrivals of computer, internet, television and mobile phones have brought immense opportunities to them. These channels or media offer many opportunities to play video games. It should be noted that playing some kind of games in the ground require some physical effort. On the other hand, not much physical effort is needed for playing videogames. That is why lazy modern generation is running after videogames. Two features of video games fuel renewed interest by researchers, public policy makers, and the general public. First, the active role required by video games is a double-edged sword. It helps educational video games be excellent teaching tools for motivational and learning process reasons. But, it also may make violent video games even more hazardous than violent television or cinema. Second, the arrival of a new generation of ultraviolent video games beginning in the early 1990s and continuing unabated to the present resulted in large numbers of children and youths actively participating in entertainment violence that went way beyond anything available to them on television or in movies. Recent video games reward players for killing innocent bystanders, police, and prostitutes, using a wide range of weapons including guns, knives, flame throwers, swords, baseball bats, cars, hands, and feet (Anderson) Some people argue that videogames help teenagers to increase their mental abilities and it should be encouraged as much as possible. On the other hand others are of the view that over influence of videogames may affect the physical, mental and emotional developments of teenagers. In do believe that playing excess videogames is not at all good for the teenage community. This paper argues against excessive playing of videogames with the help if arguments in favor and against videogame playing. â€Å"Gentile & Anderson (2003) state that playing video games may increase aggressive behavior because violent acts are continually repeated throughout the video game. This method of repetition has long been considered an effective teaching method in reinforcing learning patterns† (p.4). One of the major negative impacts of playing videogame is the development of aggressive behavior among the children. Anderson & Dill (2000) also pointed out the development of aggressive behavior among the teenagers as a result of excessive videogame playing. In their opinion, â€Å"long term video game players can become more aggressive in outlook, perceptual biases, attitudes, beliefs, and behavior than they were before the repeated exposure or would have become without such exposure† (Anderson & Dill, p.774). Aggressive behaviors are increasing day by day among teenage communities. It should be noted that in schools of western countries, plenty of shooting and violent inci dents are taking place periodically. On the other hand, such violent behaviors among teenage communities in the underdeveloped countries are less. This is because of the fact that teenagers in the developed countries are getting more opportunities to play videogames because of the

Mental Health Campaigns Research Paper Example | Topics and Well Written Essays - 2250 words

Mental Health Campaigns - Research Paper Example W.H.O also emphasizes the fact that mental health "is not just the absence of mental disorder†. Mental health denotes the cognitive or emotional well-being and the behavioral and thinking processes of people. Mental health is pivotal for an individual as it can affect the way a person think, feel and behave in any situation and can also negatively impact the quality of living, relationships and physical well-being of an individual. It is estimated that about 20-25% of the population of every nation in the world suffer from a Mental or a neuropsychiatric disorder during their lifetime (Klin & Lemish, 2008, p. 2). Though a number of psychological health awareness initiatives and educational programs have attempted to improve mental health literacy among the public with the aim of improving recognition and help seeking and reducing stigma, only 20–35% of those people identified with mental disorder seek professional assistance (Klin & Lemish, 2008, p. 2). Mental Health Literacy refers to "the ability to gain or access to, understand, and use information in ways which promote and maintain good mental health" (Chang, 2008, p. 1). Low mental health literacy of the people can accentuate the distorted health beliefs of the public that hinders the willingness of people identified with mental disorders from recognizing their symptoms and seeking professional help. The health beliefs of the public act as one of the main barriers to treatment participation or access to care. The stigma since is a social element that shape up the health beliefs of the public, can, therefore, prevent people from pursuing mental health services as they do not want to get labeled as "mental patient". The health beliefs of the public, formulated by the stigma, therefore, needs to be accurate and public health campaigns become essential to improve the mental health literacy of the public. This paper focuses on the stigmatization of mental health disorders and the an alysis of the efficacy of entertainment-education utilized in public health campaigns. Stigmatization is â€Å"the process wherein one condition or aspect of an individual is attributionally linked to some pervasive dimension of the target person's identity† (Byrne, 2011). Stigma is a 'buzz word' and it is a mark of disgrace or discredit that sets a person aside from others and this negative aspect of an individual give a deviant identity to that person (Byrne, 2011). When marked as 'mentally ill', a psychiatric patient is objected to internal consequences such as secrecy, lower self-esteem and shame as well as the external consequences of social exclusion, prejudice and discrimination. The people identified with psychological disabilities are marginalized not only from the society but also from the development aid and government attention. Moreover, this group of people is vulnerable to the public stigmatization wherein they are imposed with the distorted images of violence, sin and laziness. Though there are modern methods of treatment for mental illness, the public believe that long-term hospital care is the only solution to mental illness. (Mental Health: Advocacy, 2011). In order to examine stigma associated with mental health, a measuring of public opinion about mental disorders becomes necessary as it can identify the levels of awareness, belief systems, fears and stereotypes related to mental disorders. But measuring public opinion, by focus groups or

Colonialism in American Literature of Vietnam War Essay

Colonialism in American Literature of Vietnam War - Essay Example The involvement of the American government in the war judged by critics slash historians as taking the nature of colonialism renders the bulk of American literature on Vietnam War as largely colonial in structure, content and focus. Michael Adas in his article, "A Colonial War: The United States' Occupation of Vietnam" argues and historically proves the colonial inclination and interest of America in Vietnam claiming that America veered away from its earlier anti-colonial position under Roosevelt then proceeded to support the continuance of French colonization in Indochina ( 29). In Adas's own words: In the next decade, three American presidents presided over an escalating political and military involvement in Indochina that had most of the main attributes of colonial interventions in the preceding centuries of European global domination. Defying the decidedly anti-colonial rhetoric of the Roosevelt years, they committed the United States to a massive colonial occupation in a postcolonial era. (29) Since the Vietnam War is the result of America's efforts to participate in the colonization endeavor of Europe in an era of decolonization, the subsequent literary product is essentially and categorically colonial. A colonial literature tackles and examines the issues arising from Imperialism such as the moral dilemma(s) of the colonizer or the imperialist as shown in the essay "Shooting an Elephant" by George Orwell. In the essay Orwell recalled how as a sub-divisional officer of the town he shot an elephant in Burma to earn the approval of the Burmese and to "avoid looking a fool" (Hunt & Perry 295) even though he thought it wrong to deliberately kill the beast. George Orwell's personal essay demonstrates how an imperialist system morally confuses the colonizer or the member of the colonizing nation who believes that imperialism is "an evil thing" (289) but on the one hand because of a sense of nationality is forced to play his or her part as the oppressor. One of the defining characteristics and key quality of a colonial literature is its denunciation of colonialism and its negative impact both on the colonizer and the colonized. It is highly critical of the system of imperialism, noting the impartiality in the relationship between the oppressor and the oppressed with the oppressor receiving most of the gains while the other party suffers and gets traumatized. Colonial literature discusses the social, economic and psychological implications or consequences of colonialist experience. In structure, colonial literature is "characterized by a strong sense of ambiguity: uncertainty about the morality of imperialism about the nature of humanity, and about the continuing viability of European civilization" ("Colonial Literature" 1). Through its form, colonial literature exposes the contradictions, paradoxes and ironies of imperialism. American Literature of Vietnam War is Colonial in theme, content, structure and focus Novels A.) Robert Olen Butler (The Alleys of Eden) 1981 This fictional narrative centers on Clifford Wilkes, an American soldier trapped in Saigon at the closing of the Vietnam War. In part, it is a romantic tale with Lanh, a Vietnamese lass, serving as his love interest and partner for nearly five years. Clifford's love for Lanh is keeping him from seeking refuge in the United

Case Scenario - Mr and Mrs Green Essay Example | Topics and Well Written Essays - 750 words

Case Scenario - Mr and Mrs Green - Essay Example And, the Bailee accepts clothing to return it after they have dry cleaned the same to the Bailor. The Professional Bailee, Spouses Green, has the obligation to return the clothing. If the clothing is lost or damaged there is a rebuttable presumption that the Bailee was negligent. The Spouses must show that they exercised ordinary or reasonable care that a professional dry cleaning shop would do in the same circumstances. If they fail to do so, they will be liable for ordinary negligence and must reimburse the Bailor for the amount of the property. c) Purchase of a business does not mean purchase of the land or building where it is situated. To obtain title to the land and building the Spouses Green may make an offer to purchase it from the Owner thereof. The Spouses Green will encounter two types of real property: the immovable; and, the movable that has been attached to an immovable (Mallor, et al. p584). The first type are real property, by their very nature of being immovables; unlike the 2nd type which are by their nature movables considered by law as real property for being attached as a fixture by virtue of: 1. Attachment – If the personal property is firmly attached to the real property that it cannot be removed without damaging the property. The dry cleaning machines, gas tanks, and generators firmly fixed to the building wall and floor with big screws and metal clamps are fixtures by virtue of attachment. But, in the interest of encouraging the growth of businesses, they are reclassified as Trade Fixtures exempt from this rule. Trade fixtures are those necessary to carry on the business of the entrepreneur. 2. Adaptation – the degree to which the item’s use is necessary or beneficial to the use of the real property. Door knobs changed upon occupancy for security are necessary to the use of the real property

Post Traumatic stress diorder in Soldiers Research Paper

Post Traumatic stress diorder in Soldiers - Research Paper Example ..10 Cognitive Behavioral therapy†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.11 Support groups and Family therapies†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..11 Conclusion†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..12 Abstract Post-traumatic stress disorder is an acute mental disorder that falls under the category of anxiety disorders according to the DSM-IV TR (Diagnostic Statistical Manual of Mental Disorders). The substance of this prose assesses the symptoms, background and the intensity of the problem in soldiers and Veterans. This qualitative analysis of the disorder not only defines the perceptions of the disorder but a lso discusses how the sufferer cope with the symptoms and how the symptoms and behavior exhibited by the sufferer may be transmitted in their children, that significantly hampers the child’s functioning. ... The disorder can be triggered in any individual and the most common incidents that can give rise to this problem are rapes, domestic violence or violent death of a loved one; in other words any incident that threatens the psychological or physical integrity of the individual. There are millions of factors that contribute to exacerbating the symptoms experienced by the sufferer; however, there is a significant amount difference between the vulnerability of each individual and factors such as self-efficacy, self-esteem, personality and the social support that an individual has that plays an important role in how the symptoms are exhibited by the individual. Eminent researchers Davidson and Mellor (2001) noted that children of PTSD victims were likely to exhibit the behavior exhibited b y the client and the impact is extremely pervasive They stated, â€Å"Symptoms in their children, including lower self-esteem, higher disorder rates and symptoms resembling those of the traumatized pare nt† (Hunter, 2001, p. 345). Therefore, it can be argued that there is a genetic diathesis involved that regulates the vulnerability of the individual effectively and also shows that the symptoms can have detrimental repercussions on the people around them. Researchers have also discovered that these effects are more pronounced on people who have witnessed combat that is soldiers and veterans. Military services have offered therapies and various programs to help and screen individual to check the impact of the violence that the client experienced on the battlefield. There is a repertoire of symptom that the individual experiences after serving in the army and this is vastly due to the

Management Essay Example | Topics and Well Written Essays - 1000 words - 3

Management - Essay Example Internal forces of business environment include: strategy, employees and its own culture. External forces of business environment include government, climate, political and economic conditions. Business environment is of utmost importance to an organization and a manger has to work while monitoring the external and internal sources of business environment and either change or continue its operations in accordance to the changes in the business environment to remain successful and increase profitability of the organization. If managers are able to keep a watch on its business environment, they can benefit from opportunities available in the environment, they can counter the threats and weaknesses that are available in the internal and the external business environment and further enhance the strength of the business. For example: Managers need to continuously monitor the changes in the demographics of the country in which it is operating in so it can adjust its marketing and human res ource activities accordingly and benefit from opportunities. ... People may have a desire to purchase a good or service, but their desire does not create a market. A market is created with a customer can be qualified as able to make a purchasing transaction. Customers are only qualified to make a purchase if they have an existing need that needs to be satisfied, have the ability to make the purchasing transaction, have monetary resources to conduct the transaction and have the power to complete the transaction. Contemporary society consists of connections between human beings; market is a network that creates such connections by connecting buyers and sellers. When humans of the contemporary society interact with each other, they achieve wellbeing and the conditions of their life increases. Markets provide individuals with goods and services to satisfy their needs which help in improving the conditions of individuals and leading to well being of the society. Works Cited Weimer, Arthur M. Business Administration: An Introductory Management Approach. Homewood, Ill: R.D. Irwin, 1966. Print. Paper 2 One of the major elements in the marketing mix is the place of distribution of product. Distribution is regarded as the procedure through which a good or service is made available for the consumers to consume by a manufacturer or business making that product or service (Longenecker 200). The activity of distribution can be conducted through direct and indirect methods. This form of transfer of products from the manufacturer to the consumer is conducted through one of the options of channels available to the producer. Channels are referred to as organizations that are dependant on other organizations and all these organizations combine

Ritual practices Essay Example for Free

Ritual practices Essay John A. Grim of Yale University explained that the term â€Å"indigenous† is a generalized reference to the thousands of small scale societies who have distinct languages, kinship systems, mythologies, ancestral memories and homelands. Much of these indigenous cultures were found in North America long before the European settlers arrived. Some of these cultures had their own way of living and unique ways of worshiping their gods and practicing rituals. Diversity in the belief of the divine, their spirituality and nature would be the most identifiable aspect, wherein some believe in reincarnation, concept of dual divinity and the â€Å"interrelationship of the microcosm of the body with the macrocosm of the larger world† (Grim, 2006), while others believe in kinship in animals and humans. The advent of modern civilization proved to be devastating to these indigenous cultures when natives where forcibly converted to Christianity leading to high suicide rates due to the suppression of their religion and culture. Many were sold into slavery and forced to live in reservations, therefore limiting their freedom to interact with nature leading to the death of some of their rituals and customs. With the passage of time, some of these indigenous beliefs were incorporated into the different contemporary religions were today’s respective native families attend to. Personal convictions consist of the combination of traditional beliefs with Christian elements. Some existing Native American tribes still practice rituals, rain dances, chanting and drum beating within the context of Christianity. No matter how great the difference in religious practices between life then and the contemporary times, indigenous people still believe that the past still lives in the present; as John Grim puts it, that central to indigenous traditions is an awareness of the integral and whole relationship of symbolic and material life. Ritual practices and the cosmological ideas which undergird society cannot be separated out as an institutionalized religion from the daily round of subsistence practices. Sources: 1) Native Religions Development (2006), www. religioustolerance. org [internet] http://www. religioustolerance. org/nataspir. htm Date Accessed: 17 January 2007 2) Grim, John A. (2006), Indigenous Traditions and Ecology (web page) http://environment. harvard. edu/religion/religion/indigenous/index. html Date Accessed: 17 January 2007

Biological Control as a Pest Management Strategy

Biological Control as a Pest Management Strategy Several researches were carried out by different organisations in Mauritius to implement biological control in Mauritius as a component of our local Integrated Pest Management strategies. However, it can still be observed that most of the natural enemies which have been introduced over the past few years are unable to match up with their expected efficacy on the field. Only a portion of the introduced natural enemies are very efficient in pest control and maintaining their level of infestation below the economic threshold level, for example, natural enemies used in sugar cane field are very effective and necessitates no pesticide and herbicide use to control pests thus, reducing the cost of sugar cane production. However, those vegetables planters in Mauritius that are aware of the principles of biological control tend to misjudge the use of biological control as a method of pest management, they are both right and wrong in certain ways. Based on the data collected during this research, it can be clearly seen that the efficacy of natural enemies differ from region to region. Depending on the natural enemy species, some are more effective in certain regions compared to others. Some natural enemies have the potential of being a very good effective biological control, however, it is seen that their performance on field is not sufficiently satisfactory. Before implementing a new biological control programme, several procedures are followed so as to choose the best performing natural enemies. Threats to natural enemies’ efficacy are present in many forms. The biggest threat and most common one is the application and overuse of chemicals such as pesticides and insecticides. Based on the survey data obtained, it is seen that most farmers apply pesticide every week. The use of chemical pesticides has increased significantly during the past 10 years. The application and pesticide residuals are severe threats to natural enemies, most especially parasitic wasps, flies and predators. A good example would be planter N01 where a sample of Plutella xylostella (L) was collected to evaluate the parasitoid Cotesia plutellae. The farmer makes use of selective pesticides and applies a minimum amount on his infected plants and the rate of pesticide application is every 2 weeks. The efficacy of Cotesia plutellae in his field was seen to be as much as 50% that is, half of the larvae evaluated were parasitized by the wasp. On the other hand, another sample of Plutella xylostella (L) was collected on planter’s W02 field and the efficacy of Cotesia plutellae evaluated was found to be much lower than the N01 sample, 16% respectively. From the survey data, it was seen that planter W02 makes use or a larger selection of chemicals and applies them every week, the rate of pesticide application is twice as more for planter W02 than for N01.Another interesting observation made while carrying out the survey. It was the way some of the planters prepare their pesticide solution, some of them clearly use much more pesticide than the amount recommended. Some of them tend to mix several pesticides together and made a pesticide â€Å"cocktail† out of them, making the final solution have a broader spectrum. Though the prepared pesticide cocktail solution might be effective against the pest, but it also has a negative impact on natural enemies present on the field or the surrounding fields. Due to the â€Å"cocktail effect†, it is possible that chemicals in the mixture might interact to produce an increase in its toxicity. This might be a reason for the low efficacy of natural enemies. Farmer A may be taking good measures of IPM and using less chemicals, but the overuse and misuse of pesticides by the other nearby farmer(s) will sure affect biological control on farmer’s A field. Another case encountered with high natural enemy efficacy is with sample W01 which consisted of Aphis gossypi collected a Saint Martin, a village situated in the West of Mauritius. The efficacy of the parasitoid wasp Lysiphlebus testaceipes was of 48%. The sample was collected on a calabash plant. What was most interesting was that calabash was not the planter’s main crop, only a few trees were planted at the corner of the field and let to grow without taking care of and no pesticide and other chemical application. This might be why the efficacy of the parasitoid was relatively high. A very important cause of biological control failure is the planter’s attitude and knowledge about natural enemies and biological control. Most farmers surveyed had very good knowledge about the pest threat they usually face, they also can identify the damage causing pest and use appropriate measures. On the contrary, it was found that most of them (97%) do not have any knowledge on biologi cal control, they did not know the existence of beneficial organism controlling damage causing ones. For this reason, they cannot be expected to recognise and adopt conservative measures to preserve natural enemies, such as formerly mentioned, reduce pesticide use, habitat management and modify biological and ecological aspects to enhance natural enemies such as elimination of secondary enemies. It is believed that sensitisation by the responsible authorities is important to the planters so as to improve the overall IPM in Mauritius. On the other hand, even if proper sensitisation is made to all planters, it might still be quite challenging to increase the natural enemy efficacy. Most planters in Mauritius have a mindset that makes them disbelief in something they do not see with their own eyes. Also, farmers won’t be willing to abandon their traditions which were passed on to them by their parents and grandparents. The use of chemicals in Mauritian agriculture is far from being regulated. Farmers say that their budget are often limited and that they cannot take risks of trying something new due to the fear of it not being a success and of losing everything. This is due to the fact that biological control does not completely eliminate the pest population but in fact it only reduces the pest level to a minimum acceptable level. This is usually unacceptable to the farmer who wants to see his field entirely free of any pest. If no proper conservative measures and natural enemy monitoring are applied, another pest outbreak may occur inflicting losses to planters. These are reasons why planters in Mauritius prefer to use pesticides as a method of pest control. Also, though most planters are not willing to change their traditional way of pest control, some of them are sometimes willing to adopt new IPM strategies in order to control pests, such as the use of bait traps and sticky traps, but those traps also act against natural enemies, mostly tiny parasitic wasps. Some good agricultural practices also can contribute in biological control failure, for example, crop rotation is a good way of reducing pest population, but if the host plant essential for the pest survival is not available, neither will be the pest or their respective natural enemy. The use of pest resistant varieties is also a good way to avoid pest outbreaks but is the crop is too resistant to pests, biological control will be very hard to establish if no other sources of habitat and food are present. Another aspect having an effect on natural enemy efficacy evaluated during this research was the climatic factor in the different regions that is mainly the microclimate present in the different sites selected for sample collection. It was found that climate change has an impact on insect phenology and the distribution of phytophagus insects especially Lepidoptera. This explains the rapid development and vast distribution of the pest Plutella xylostella throughout Mauritius. In the chi square test done and presented in table 3.8 in the previous chapter, it was found that the p-value to be less than 0.05 for the natural enemy Cotesia plutella, meaning that the efficacy of the parasitoid is dependent to the climatic factor in different region. In fact, both the hymenoptera parasitoid evaluated was seen to be dependent on climatic factors compared to the other natural enemies evaluated in the chi square test (Refer to Appendix 1). This describes the difference in efficacy of the parasite around Mauritius. It was found by Nofemela, 2004 that the parasitoid Cotesia plutellae can develop on a wide range of temperatures (8.14oC – 33oC), thus, another deduction that can be made about the efficacy of Cotesia plutellae is that the parasitoid density present in the different regions is not the same. In all cases of planter interviewed, it is found that the planters noticed an increase in temperature and in change in rainfall pattern and intensity. The planters also mentioned that the warmer it is, the more the risk of a pest outbreak, for this reason, they usually apply more pesticides in summer. It is concluded a changing (warming) climate and use of chemicals in agriculture are directly and positively related. Despite the fact that some pests became resistant to pesticides and other chemicals, farmers still apply pesticides knowing that no results will be seen. To some extent, climate change will be responsib le for the increasing overuse of chemicals and agriculture which can in turn lead to a decrease in biological control efficacy. A change in insect phenology might also affect the host and natural enemy synchrony, a fail in synchronisation with the host life cycle might cause drastic decline in biological control for reproductive failure. Other factors which was seen to affect the efficacy of natural enemies was the coexistence of the pest with other organisms which provide protection to the pest against natural enemies. The two species of mealy bug studied, the Paracoccus marginatus and the Icerya seychellarum were seen to coexist with ants in all the pest samples collected. The ants harvest a substance called honeydew from them which is secreted by the mealy bugs, and in return they provide protection against natural enemies, mostly predators. The efficacy of the Paracoccus marginatus predator Exochomus laeviusculus might not be the same on the field than the one evaluated in the lab, on the field, especially on papaya trees where the Paracoccus marginatus samples were collected the mealy bugs were found to be compacted on the trees, stems and fruit, like a large white cottony lump. A waxy texture was present on all the mealy bug colonies, this may explain why the pest is being hard to control. The waxy substance pr events chemicals to penetrate into the colony layer and natural enemies can only feed on the lonely nymphs wondering around with no protection. Also several species of ladybugs and other predators like spiders and sparrows were seen on the same tree. Such cases might generate a competition among predators and the efficacy of a selected predator for example the coccinelid Exochomus laeviusculus may not be the same compared to a scenario where the coccinelid is the only predator preying on the pest. A very low parasitism rate was recorded for the parasitoid Cryptochetum monophlebi biological control of the pest Icerya seychellarum, this might be because of the presence of ants, chemicals present in that particular environment, but also, the Cryptochetum monophlebi being the order Diptera. It is known that Dipterans are the favourite food of lizards and some other insectivorous reptiles. Due to the presence of those reptiles on tree fruits, it can be a reason why the efficacy of the parasitoid is too low. The efficacy of the ladybug Nephaspis bicolor, predator of Aleurodicus dispersus was also evaluated in the lab and its efficacy, just like other natural enemies evaluated was seen to vary from region to region. However the efficacy was seen to be very low, although no ants were present where the Aleurodicus disperses sample were collected, the efficacy of the Nephaspis bicolor was as low as for the Exochomus laeviusculus. Coccinellid are more effective when several of them are present, for an efficient biological control using ladybugs, a high population must be available and maintained in the field throughout the crop cycle on which the pest is present. When no food is present, the ladybug beetle will tend to move away to another area where the pest is present or find another sources of food so as for them not starve to death. If only a few are present, they will only prey on a fewer amount of pests, making no differences to the pest population, also, they might get eaten up by bird s or lizards present on the field. However both the ladybugs evaluated are independent to the climatic factor present in the regions in which they were collected (P > 0.05). It means that the regions from which they were collected does not have an effect on their efficacy. Another aspect of IPM for sustainable pest control would be the use of biopesticides, such as microbial pesticides and botanical pesticides. Only 32% of all the planters interviewed know about the availability of this kind of pesticide. Most of them think they are expensive and ineffective. However, since biopesticides are not manufactured locally, the price of the biopesticides is almost the same as for chemical pesticides. This is a reason why planters prefer to buy chemical pesticide and don’t take the risk of purchasing something they are not sure about. Planters also think it is troublesome to prepare their own botanical pesticides using locally available plants such as neem and citronella and much more. Botanical pesticides do not harm the environment and the efficacy of natural enemies will be sure to be boosted if more planters adopt the use of biopesticides. Another interesting observation made while processing the results obtain. It was that the efficacy of natural enemies evaluated in the different agro ecological zones selected does not differ greatly. The efficacies are in the range of 15.8% to 20.2% respectively. It can be concluded that the natural enemies evaluated have a good adaptability to the local climate, which is a major characteristic for being a good natural enemy as failure to adapt to the climate and environmental factors is among the factors in biological control failure. Nevertheless, it is observed the average efficacy is lower in super humid regions compared to sub humid regions. As mentioned earlier, this might be due to the practices of the planters on their farm and also the difference in temperature, causing changes in both the natural enemy and the host pest’s phenology. In crops producing fields in Mauritius, it was deducted that the use of natural enemies is effective to certain extent, but not as effective to be able to control a pest by themselves. This was the case in every area investigated regardless of the land use diversities. The land use also can prove to be very determining in biological control. An example would be the pest Aleurodicus disperses, the sample (CO5) was collected in Vacoas where the citrus trees were in a field situated in a residential area. The trees were found on the road side and were heavily infected near the stem and underneath the leaves. The beetle Nephaspis bicolor was scarce and very difficult to count. On the other hand, sample CO8 of Aleurodicus disperses was collected at Ripailles, the trees were found in a field surrounded by other vegetable fields and sugarcane. The tree was rich in ladybug population, and the beetle Nephaspis bicolor could be easily collected. This proves that land use and vegetative cover h as an impact on the presence of natural enemies. For example, maize areas have a positive effect on ladybug density present and thus, this explains the low pesticide use in maize crops (Zhou, 2014). Vegetative covered areas provide food and shelter for natural enemies. A region of high vegetative cover will tend to have greater densities of natural enemies compared to a region of low vegetative cover or bare land with no vegetation at all. Other crops or trees have abilities to attract some natural enemies, so planting those trees on the field will tend to enhance biological control. Some farmers, especially large scale farmers often wipe out their field to remove everything left after harvesting, this also is a very bad approach if we want biological control to succeed. With no vegetation to provide shelter, the beneficial organisms will tend to move to another habitat or die out. A good monitoring schedule must be setup in order to ensure the status of natural enemies and their efficacy must be evaluated regularly. This is mainly to make sure that biological control is going on smoothly and whether human intervention is needed to provide a boost to the natural enemies in order to increase their performance. However, none of these seem to be present on the field where the evaluations were carried out. Although a very good method of foreign exploration and introduction of natural enemies were done by local organisations, no further monitoring programs are carried out. In some areas of the country, for example Saint Martin, Surinam and Belle Mare, in all which a pest sample was collected, several small planters are present ad a few large scale planters. Their field are close to each other and can be combined together to form a very large area for crop production. The efficacy of the respective natural enemies was very low compared to other areas. The reason might be because each and every farmer makes use of their own type of pesticides in their own personal ways. And pesticides being applied to such a large area will surely cause toxicity to the land and water resources found nearby. Such a large amount of pesticide application decreases the density of the available natural enemies. A lower natural enemy density and failure to reproduce will lead to a fewer amount of parasitized or preyed pest. Ladybug beetles tend to be very good pest destroyer as both the larvae and adults are voracious eater. However, a very interesting observation was made on a papaya tree infested with mealy bugs. Several species of ladybugs were present on the tree. Some unusual activities were observed. A ladybug larva was seen feeding on another ladybug larva which was of a different species. Cannibalism might also be a factor of low efficacy among coccinelid. This is an issue of host specificity and competition among pest predators. Concerning the parasitoids evaluated no cases of hyperparasitism, multiparasitism or superparasitism was detected.

Advantages of Binary System

Advantages of Binary System The binary number system, base two, uses only two symbols, 0 and 1. Two is the smallest whole number that can be used as the base of a number system. For many years, mathematicians saw base two as a primitive system and overlooked the potential of the binary system as a tool for developing computer science and many electrical devices. Base two has several other names, including the binary positional numeration system and the dyadic system. Many civilizations have used the binary system in some form, including inhabitants of Australia, Polynesia, South America, and Africa. Ancient Egyptian arithmetic depended on the binary system. Records of Chinese mathematics trace the binary system back to the fifth century and possibly earlier. The Chinese were probably the first to appreciate the simplicity of noting integers as sums of powers of 2, with each coefficient being 0 or 1. For example, the number 10 would be written as 1010: 10= 1 x 23 + 0 x 22 + 1 x 21 + 0 x 20 Users of the binary system face something of a trade-off. The two-digit system has a basic purity that makes it suitable for solving problems of modern technology. However, the process of writing out binary numbers and using them in mathematical computation is long and cumbersome, making it impractical to use binary numbers for everyday calculations. There are no shortcuts for converting a number from the commonly used denary scale (base ten) to the binary scale. Over the years, several prominent mathematicians have recognized the potential of the binary system. Francis Bacon (1561-1626) invented a bilateral alphabet code, a binary system that used the symbols A and B rather than 0 and 1. In his philosophical work, The Advancement of Learning, Bacon used his binary system to develop ciphers and codes. These studies laid the foundation for what was to become word processing in the late twentieth century. The American Standard Code for Information Interchange (ASCII), adopted in 1966, accomplishes the same purpose as Bacons alphabet code. Bacons discoveries were all the more remarkable because at the time Bacon was writing, Europeans had no information about the Chinese work on binary systems. A German mathematician, Gottfried Wilhelm von Leibniz (1646-1716), learned of the binary system from Jesuit missionaries who had lived in China. Leibniz was quick to recognize the advantages of the binary system over the denary system, but he is also well known for his attempts to transfer binary thinking to theology. He speculated that the creation of the universe may have been based on a binary scale, where God, represented by the number 1, created the Universe out of nothing, represented by 0. This widely quoted analogy rests on an error, in that it is not strictly correct to equate nothing with zero. The English mathematician and logician George Boole (1815-1864) developed a system of Boolean logic that could be used to analyze any statement that could be broken down into binary form (for example, true/false, yes/no, male/female). Booles work was ignored by mathematicians for 50 years, until a graduate student at the Massachusetts Institute of Technology realized that Boolean algebra could be applied to problems of electronic circuits. Boolean logic is one of the building blocks of computer science, and computer users apply binary principles every time they conduct an electronic search. The binary system works well for computers because the mechanical and electronic relays recognize only two states of operation, such as on/off or closed/open. Operational characters 1 and 0 stand for 1 = on = closed circuit = true 0 = off = open circuit = false. The telegraph system, which relies on binary code, demonstrates the ease with which binary numbers can be translated into electrical impulses. The binary system works well with electronic machines and can also aid in encrypting messages. Calculating machines using base two convert decimal numbers to binary form, then take the process back again, from binary to decimal. The binary system, once dismissed as primitive, is thus central to the development of computer science and many forms of electronics. Many important tools of communication, including the typewriter, cathode ray tube, telegraph, and transistor, could not have been developed without the work of Bacon and Boole. Contemporary applications of binary numerals include statistical investigations and probability studies. Mathematicians and everyday citizens use the binary system to explain strategy, prove mathematical theorems, and solve puzzles. Basic Concepts behind the Binary System To understand binary numbers, begin by remembering basic school math. When we were first taught about numbers, we learnt that, in the decimal system, things are categorised into columns: H | T | O 1 | 9 | 3 such that H is the hundreds column, T is the tens column, and O is the ones column. So the number 193 is 1-hundreds plus 9-tens plus 3-ones. Afterwards we learnt that the ones column meant 10^0, the tens column meant 10^1, the hundreds column 10^2 and so on, such that 10^2|10^1|10^0 1 | 9 | 3 The number 193 is really {(1*10^2) + (9*10^1) + (3*10^0)}. We know that the decimal system uses the digits 0-9 to represent numbers. If we wished to put a larger number in column 10^n (e.g., 10), we would have to multiply 10*10^n, which would give 10 ^ (n+1), and be carried a column to the left. For example, if we put ten in the 10^0 column, it is impossible, so we put a 1 in the 10^1 column, and a 0 in the 10^0 column, therefore using two columns. Twelve would be 12*10^0, or 10^0(10+2), or 10^1+2*10^0, which also uses an additional column to the left (12). The binary system works under the exact same principles as the decimal system, only it operates in base 2 rather than base 10. In other words, instead of columns being 10^2|10^1|10^0 They are, 2^2|2^1|2^0 Instead of using the digits 0-9, we only use 0-1 (again, if we used anything larger it would be like multiplying 2*2^n and getting 2^n+1, which would not fit in the 2^n column. Therefore, it would shift you one column to the left. For example, 3 in binary cannot be put into one column. The first column we fill is the right-most column, which is 2^0, or 1. Since 3>1, we need to use an extra column to the left, and indicate it as 11 in binary (1*2^1) + (1*2^0). Binary Addition Consider the addition of decimal numbers: 23 +48 ___ We begin by adding 3+8=11. Since 11 is greater than 10, a one is put into the 10s column (carried), and a 1 is recorded in the ones column of the sum. Next, add {(2+4) +1} (the one is from the carry) = 7, which is put in the 10s column of the sum. Thus, the answer is 71. Binary addition works on the same principle, but the numerals are different. Begin with one-bit binary addition: 0 0 1 +0 +1 +0 ___ ___ ___ 0 1 1 1+1 carries us into the next column. In decimal form, 1+1=2. In binary, any digit higher than 1 puts us a column to the left (as would 10 in decimal notation). The decimal number 2 is written in binary notation as 10 (1*2^1)+(0*2^0). Record the 0 in the ones column, and carry the 1 to the twos column to get an answer of 10. In our vertical notation, 1 +1 ___ 10 The process is the same for multiple-bit binary numbers: 1010 +1111 ______ Step one: Column 2^0: 0+1=1. Record the 1.   Temporary Result: 1; Carry: 0 Step two: Column 2^1: 1+1=10.   Record the 0 carry the 1. Temporary Result: 01; Carry: 1 Step three: Column 2^2: 1+0=1 Add 1 from carry: 1+1=10.   Record the 0, carry the 1. Temporary Result: 001; Carry: 1 Step four: Column 2^3: 1+1=10. Add 1 from carry: 10+1=11. Record the 11.   Final result: 11001 Alternately: 11 (carry) 1010 +1111 ______ 11001 Always remember 0+0=0 1+0=1 1+1=10 Try a few examples of binary addition: 111 101 111 +110 +111 +111 ______ _____ _____ 1101 1100 1110 Binary Multiplication Multiplication in the binary system works the same way as in the decimal system: 1*1=1 1*0=0 0*1=0 101 * 11 ____ 101 1010 _____ 1111 Note that multiplying by two is extremely easy. To multiply by two, just add a 0 on the end. Binary Division Follow the same rules as in decimal division. For the sake of simplicity, throw away the remainder. For Example: 111011/11 10011 r 10 _______ 11)111011 -11 ______ 101 -11 ______ 101 11 ______ 10 Decimal to Binary Converting from decimal to binary notation is slightly more difficult conceptually, but can easily be done once you know how through the use of algorithms. Begin by thinking of a few examples. We can easily see that the number 3= 2+1. and that this is equivalent to (1*2^1)+(1*2^0). This translates into putting a 1 in the 2^1 column and a 1 in the 2^0 column, to get 11. Almost as intuitive is the number 5: it is obviously 4+1, which is the same as saying [(2*2) +1], or 2^2+1. This can also be written as [(1*2^2)+(1*2^0)]. Looking at this in columns, 2^2 | 2^1 | 2^0 1 0 1 or 101. What were doing here is finding the largest power of two within the number (2^2=4 is the largest power of 2 in 5), subtracting that from the number (5-4=1), and finding the largest power of 2 in the remainder (2^0=1 is the largest power of 2 in 1). Then we just put this into columns. This process continues until we have a remainder of 0. Lets take a look at how it works. We know that: 2^0=1 2^1=2 2^2=4 2^3=8 2^4=16 2^5=32 2^6=64 2^7=128 and so on. To convert the decimal number 75 to binary, we would find the largest power of 2 less than 75, which is 64. Thus, we would put a 1 in the 2^6 column, and subtract 64 from 75, giving us 11. The largest power of 2 in 11 is 8, or 2^3. Put 1 in the 2^3 column, and 0 in 2^4 and 2^5. Subtract 8 from 11 to get 3. Put 1 in the 2^1 column, 0 in 2^2, and subtract 2 from 3. Were left with 1, which goes in 2^0, and we subtract one to get zero. Thus, our number is 1001011. Making this algorithm a bit more formal gives us: Let D=number we wish to convert from decimal to binary Repeat until D=0 a. Find the largest power of two in D. Let this equal P. b. Put a 1 in binary column P. c. Subtract P from D. Put zeros in all columns which dont have ones. This algorithm is a bit awkward. Particularly step 3, filling in the zeros. Therefore, we should rewrite it such that we ascertain the value of each column individually, putting in 0s and 1s as we go: Let D= the number we wish to convert from decimal to binary Find P, such that 2^P is the largest power of two smaller than D. Repeat until P If 2^P put 1 into column P subtract 2^P from D Else put 0 into column P End if Subtract 1 from P Now that we have an algorithm, we can use it to convert numbers from decimal to binary relatively painlessly. Lets try the number D=55. Our first step is to find P. We know that 2^4=16, 2^5=32, and 2^6=64. Therefore, P=5. 2^5 Subtracting 55-32 leaves us with 23. Subtracting 1 from P gives us 4. Following step 3 again, 2^4 Next, subtract 16 from 23, to get 7. Subtract 1 from P gives us 3. 2^3>7, so we put a 0 in the 2^3 column:  110 Next, subtract 1 from P, which gives us 2. 2^2 Subtract 4 from 7 to get 3. Subtract 1 from P to get 1. 2^1 Subtract 2 from 3 to get 1. Subtract 1 from P to get 0. 2^0 Subtract 1 from 1 to get 0. Subtract 1 from P to get -1. P is now less than zero, so we stop. Another algorithm for converting decimal to binary However, this is not the only approach possible. We can start at the right, rather than the left. All binary numbers are in the form a[n]*2^n + a[n-1]*2^(n-1)++a[1]*2^1 + a[0]*2^0 where each a[i] is either a 1 or a 0 (the only possible digits for the binary system). The only way a number can be odd is if it has a 1 in the 2^0 column, because all powers of two greater than 0 are even numbers (2, 4, 8, 16). This gives us the rightmost digit as a starting point. Now we need to do the remaining digits. One idea is to shift them. It is also easy to see that multiplying and dividing by 2 shifts everything by one column: two in binary is 10, or (1*2^1). Dividing (1*2^1) by 2 gives us (1*2^0), or just a 1 in binary. Similarly, multiplying by 2 shifts in the other direction: (1*2^1)*2=(1*2^2) or 10 in binary. Therefore {a[n]*2^n + a[n-1]*2^(n-1) + + a[1]*2^1 + a[0]*2^0}/2 is equal to a[n]*2^(n-1) + a[n-1]*2^(n-2) + + a[1]2^0 Lets look at how this can help us convert from decimal to binary. Take the number 163. We know that since it is odd, there must be a 1 in the 2^0 column (a[0]=1). We also know that it equals 162+1. If we put the 1 in the 2^0 column, we have 162 left, and have to decide how to translate the remaining digits. Twos column: Dividing 162 by 2 gives 81. The number 81 in binary would also have a 1 in the 2^0 column. Since we divided the number by two, we took out one power of two. Similarly, the statement a[n-1]*2^(n-1) + a[n-2]*2^(n-2) + + a[1]*2^0 has a power of two removed. Our new 2^0 column now contains a1. We learned earlier that there is a 1 in the 2^0 column if the number is odd. Since 81 is odd, a[1]=1. Practically, we can simply keep a running total, which now stands at 11 (a[1]=1 and a[0]=1). Also note that a1 is essentially multiplied again by two just by putting it in front of a[0], so it is automatically fit into the correct column. Fours column: Now we can subtract 1 from 81 to see what remainder we still must place (80). Dividing 80 by 2 gives 40. Therefore, there must be a 0 in the 4s column, (because what we are actually placing is a 2^0 column, and the number is not odd). Eights column: We can divide by two again to get 20. This is even, so we put a 0 in the 8s column. Our running total now stands at a[3]=0, a[2]=0, a[1]=1, and a[0]=1. Negation in the Binary System Signed Magnitude Ones Complement Twos Complement Excess 2^(m-1) These techniques work well for non-negative integers, but how do we indicate negative numbers in the binary system? Before we investigate negative numbers, we note that the computer uses a fixed number of bits or binary digits. An 8-bit number is 8 digits long. For this section, we will work with 8 bits. Signed Magnitude: The simplest way to indicate negation is signed magnitude. In signed magnitude, the left-most bit is not actually part of the number, but is just the equivalent of a +/- sign. 0 indicates that the number is positive, 1 indicates negative. In 8 bits, 00001100 would be 12 (break this down into (1*2^3) + (1*2^2) ). To indicate -12, we would simply put a 1 rather than a 0 as the first bit: 10001100. Ones Complement: In ones complement, positive numbers are represented as usual in regular binary. However, negative numbers are represented differently. To negate a number, replace all zeros with ones, and ones with zeros flip the bits. Thus, 12 would be 00001100, and -12 would be 11110011. As in signed magnitude, the leftmost bit indicates the sign (1 is negative, 0 is positive). To compute the value of a negative number, flip the bits and translate as before. Twos Complement: Begin with the number in ones complement. Add 1 if the number is negative. Twelve would be represented as 00001100, and -12 as 11110100. To verify this, lets subtract 1 from 11110100, to get 11110011. If we flip the bits, we get 00001100, or 12 in decimal. In this notation, m indicates the total number of bits. For us (working with 8 bits), it would be excess 2^7. To represent a number (positive or negative) in excess 2^7, begin by taking the number in regular binary representation. Then add 2^7 (=128) to that number. For example, 7 would be 128 + 7=135, or 2^7+2^2+2^1+2^0, and, in binary, 10000111. We would represent -7 as 128-7=121, and, in binary, 01111001. Note: Unless you know which representation has been used, you cannot figure out the value of a number. A number in excess 2 ^ (m-1) is the same as that number in twos complement with the leftmost bit flipped. To see the advantages and disadvantages of each method, lets try working with them. Using the regular algorithm for binary addition, add (5+12), (-5+12), (-12+-5), and (12+-12) in each system. Then convert back to decimal numbers. APPLICATIONS OF BINARY NUMBER SYSTEM The binary number system, also called the  base-2  number system, is a method of representing numbers that counts by using combinations of only two numerals: zero (0) and one (1). Computers use the binary number system to manipulate and store all of their data including numbers, words, videos, graphics, and music. The term bit, the smallest unit of digital technology, stands for Binary digit. A byte is a group of eight bits. A kilobyte is 1,024 bytes or 8,192 bits. Using binary numbers, 1 + 1 = 10 because 2 does not exist in this system. A different number system, the commonly used decimal or  base-10  number system, counts by using 10 digits (0,1,2,3,4,5,6,7,8,9) so 1 + 1 = 2 and 7 + 7 = 14. Another number system used by computer programmers is hexadecimal system,  base-16  , which uses 16 symbols (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F), so 1 + 1 = 2 and 7 + 7 = E. Base-10 and base-16 number systems are more compact than the binary system. Programmers use the hexadecimal number system as a convenient, more compact way to represent binary numbers because it is very easy to convert from binary to hexadecimal and vice versa. It is more difficult to convert from binary to decimal and from decimal to binary. The advantage of the binary system is its simplicity. A computing device can be created out of anything that has a series of switches, each of which can alternate between an on position and an off position. These switches can be electronic, biological, or mechanical, as long as they can be moved on command from one position to the other. Most computers have electronic switches. When a switch is on it represents the value of one, and when the switch is off it represents the value of zero. Digital devices perform mathematical operations by turning binary switches on and off. The faster the computer can turn the switches on and off, the faster it can perform its calculations. Binary Decimal Hexadecimal Number Number Number System System System 0 0 0 1 1 1 10 2 2 11 3 3 100 4 4 101 5 5 110 6 6 111 7 7 1000 8 8 1001 9 9 1010 10 A 1011 11 B 1100 12 C 1101 13 D 1110 14 E 1111 15 F 10000 16 10 Positional Notation Each numeral in a binary number takes a value that depends on its position in the number. This is called positional notation. It is a concept that also applies to decimal numbers. For example, the decimal number 123 represents the decimal value 100 + 20 + 3. The number one represents hundreds, the number two represents tens, and the number three represents units. A mathematical formula for generating the number 123 can be created by multiplying the number in the hundreds column (1) by 100, or 102; multiplying the number in the tens column (2) by 10, or 101; multiplying the number in the units column (3) by 1, or 100; and then adding the products together. The formula is: 1  ÃƒÆ'-  102  + 2  ÃƒÆ'-  101  + 3  ÃƒÆ'-  100  = 123. This shows that each value is multiplied by the base (10) raised to increasing powers. The value of the power starts at zero and is incremented by one at each new position in the formula. This concept of positional notation also applies to binary numbers with the difference being that the base is 2. For example, to find the decimal value of the binary number 1101, the formula is 1  ÃƒÆ'-  23  + 1  ÃƒÆ'-  22  + 0  ÃƒÆ'-  21  + 1  ÃƒÆ'-  20  = 13. Binary Operations Binary numbers can be manipulated with the same familiar operations used to calculate decimal numbers, but using only zeros and ones. To add two numbers, there are only four rules to remember: Therefore, to solve the following addition problem, start in the rightmost column and add 1 + 1 = 10; write down the 0 and carry the 1. Working with each column to the left, continue adding until the problem is solved. To convert a binary number to a decimal number, each digit is multiplied by a power of two. The products are then added together. For example, to translate the binary number 11010 to decimal, the formula would be as follows: To convert a binary number to a hexadecimal number, separate the binary number into groups of four starting from the right and then translate each group into its hexadecimal equivalent. Zeros may be added to the left of the binary number to complete a group of four. For example, to translate the number 11010 to hexadecimal, the formula would be as follows: Binary Number System A Binary Number is made up of only 0s and 1s. http://www.mathsisfun.com/images/binary-number.gif This is 1ÃÆ'-8 + 1ÃÆ'-4 + 0ÃÆ'-2 + 1 + 1ÃÆ'-(1/2) + 0ÃÆ'-(1/4) + 1ÃÆ'-(1/8) (= 13.625 in Decimal) Similar to the  Decimal System, numbers can be placed to the left or right of the point, to indicate values greater than one or less than one. For Binary Numbers: 2 Different Values Because you can only have 0s or 1s, this is how you count using Binary: Decimal: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Binary: 0 1 10 11 100 101 110 111 1000 1001 1010 1011 1100 1101 1110 1111 Binary is as easy as 1, 10, 11. Here are some more equivalent values: Decimal: 20 25 30 40 50 100 200 500 Binary: 10100 11001 11110 101000 110010 1100100 11001000 111110100    How to Show that a Number is Binary To show that a number is a  binary  number, follow it with a little 2 like this:  1012 This way people wont think it is the decimal number 101 (one hundred and one). Examples: Example 1: What is 11112  in Decimal? The 1 on the left is in the 2ÃÆ'-2ÃÆ'-2 position, so that means 1ÃÆ'-2ÃÆ'-2ÃÆ'-2 (=8) The next 1 is in the 2ÃÆ'-2 position, so that means 1ÃÆ'-2ÃÆ'-2 (=4) The next 1 is in the 2 position, so that means 1ÃÆ'-2 (=2) The last 1 is in the units position, so that means 1 Answer: 1111 = 8+4+2+1 = 15 in Decimal Example 2: What is 10012  in Decimal? The 1 on the left is in the 2ÃÆ'-2ÃÆ'-2 position, so that means 1ÃÆ'-2ÃÆ'-2ÃÆ'-2 (=8) The 0 is in the 2ÃÆ'-2 position, so that means 0ÃÆ'-2ÃÆ'-2 (=0) The next 0 is in the 2 position, so that means 0ÃÆ'-2 (=0) The last 1 is in the units position, so that means 1 Answer: 1001 = 8+0+0+1 = 9 in Decimal Example 3: What is 1.12  in Decimal? The 1 on the left side is in the units position, so that means 1. The 1 on the right side is in the halves position, so that means 1ÃÆ'-(1/2) So, 1.1 is 1 and 1 half = 1.5 in Decimal Example 4: What is 10.112  in Decimal? The 1 is in the 2 position, so that means 1ÃÆ'-2 (=2) The 0 is in the units position, so that means 0 The 1 on the right of the point is in the halves position, so that means 1ÃÆ'-(1/2) The last 1 on the right side is in the quarters position, so that means 1ÃÆ'-(1/4) So, 10.11 is 2+0+1/2+1/4 = 2.75 in Decimal

Evaluating An Enthalpy Change That Cannot Be Measured Directly. Essay

Evaluating An Enthalpy Change That Cannot Be Measured Directly. Dr. Watson. Introduction. We were told that sodium hydrogencarbonate decomposes on heating to give sodium carbonate, water and carbon dioxide as shown in the equation below:-   Ã‚  Ã‚  Ã‚  Ã‚  2NaHCO3(s)--------> Na2CO3 (s) + H2O (l) + CO2 (g) = DeltaH1 This was given as deltaH1 and we had to calculate as part of the experiment. This however cannot be measured directly, but can be found using the enthalpy changes from two other reactions. These being that of sodium hydrogencarbonate and hydrochloric acid and also sodium carbonate and hydrochloric acid. We were given a list of instructions in how to carry out the experiment, which are given later. List of Apparatus Used. 1 x 500ml Beaker. 1 x Thermometer(-10 to 50oC). 1 x Polystyrene Cup. 1 x Weighing Balance. 1 x Weighing Bottle. 10 grams of Sodium Hydrogencarbonate. 10 grams of Sodium Carbonate. A bottle of 2 molar HCL. Diagram. Method. Three grams of sodium hydrogen carbonate was weighted out accurately using a weighting bottle and a balance. Then thirty centimetres cubed of 2 molar HCL was measured using a measuring cylinder. The acid was then placed into the polystyrene cup and its temperature was taken and recorded using the thermometer. The pre-weighted sodium hydrogencarbonate was then added to the solution, and the final temperature was recorded. The contents of the cup were then emptied out and the cup was washed out with wate...

Effects of Industrialization and the Conditions of the Working Class in

Effects of Industrialization and the Conditions of the Working Class in England In the middle of the 19th century the industrial revolution was flourishing in England. With all of the advancements in machinery there would be new opportunities and drawbacks for citizens. Many would leave their lives on the farms and work in factories with unsafe settings. Karl Marx felt that the new advancements in society were able to support the fourth stage of human development, Communism. Along with these new advancements the people would have to learn how to self-govern themselves in the workplace and understand their new responsibilities. England possessed the right settings for the autonomous operation of the economic forces that generated industrialization. Before the industrial revolution England was mainly an agrarian society. Then there was a radical change that moved the citizens from farms and into cities. With the large rise in England’s population there was also a larger demand for goods. There was a necessity for quicker and more efficient methods of producing those goods. During the beginning of the 19th century there was a large push of inventions to help create a more mechanical society. By 1848, when the "Communist Manifesto" was written, machinery had already been assimilated into society.1 The industrial revolution made transportation, commerce, and communication more accessible to the masses. Britain already had many navigable rivers and also utilized the inventions from the revolution to improve even more.2 One of the biggest contributions to those was that of the steam engine. Thi s invention was the first automatic machine that allowed people to work uninterrupted for longer periods of time, ... ...k : Longman, 1985),3,32. 2. Kevin Kitano and Anthony Morejon, "Essay on the Industrial Revolution," 2 November 1997, <http://members.aol.com/mhirotsu/essay.htm> (23 October 2001). 3. Sidney Pollard, Peaceful conquest : the industrialization of Europe, 1760-1970 (New York : Oxford University Press, 1981),22. 4. Donald L. Donham, Studies in Marxism and Social Theology: History, Power, Ideology (Cambridge: Cambridge University Press, 1990), 60-61. 5. Kevin Kitano and Anthony Morejon. 6. Karl Marx, Manifesto of the Communist Party. 7. Pollard,27. 8. Kemp,5. 9. Kevin Kitano and Anthony Morejon. Links: http://www.neo-tech.com/businessmen/part6.html http://www.yale.edu/ynhti/curriculum/units/1981/2/81.02.06.x.html http://www.wsu.edu:8080/~dee/ENLIGHT/INDUSTRY.HTM http://members.aol.com/mhirotsu/kevin/trip2.html

Sexual Enlightenment :: Essays Papers

Sexual Enlightenment Introduction Throughout human history, there has always been a wide range of conflicts with nature. The earliest humans had to learn survival techniques in the wilderness, we have always felt the threat of the devastating forces of the earth like volcanoes, earthquakes, and hurricanes, and in recent decades have even ventured into the vast wonders of outer space. The issue we are focusing on here deals with various advances in the nature of human sexuality. Sexual enlightenment produced profound changes in human society. The aspects of sexual enlightenment covered in our web site are homosexuality, pre-marital sex, sexual disease, marriage and birth control. Homosexuality has been around for a long time. We know it has been around in some form or another for most of history. It reared its head in ancient societies like the Roman Empire and has survived to make its way into our present day world. Homosexuality has experienced many changes and different levels of acceptance depending on time and place. In the past few decades, this alternative form of sexuality has seen a huge growth in popularity. Though it is not fully accepted in today's societies, advocates are always fighting for homosexual rights. It remains a topic of varying acceptance. Our second aspect of sexual enlightenment is pre-marital sex. Of the cultures, past and present, who treasure the bond of marriage (for whatever reasons), pre-marital sex has been generally looked down upon within the society. Nonetheless, we know that it has still been a frequent occurrence in many societies. People just didn't want to wait until marriage, and they sure don't want to now. Pre-marital sex remains a popular occurrence in today's societies. Thirdly, we have the enlightenment in sexually transmitted diseases. Because of relatively recent advances in science, we have been able to study diseases much more thoroughly. We can understand how they work and even find treatments for them. These diseases have been around since people have been having sexual intercourse with multiple partners (probably all of human history) since that's how they are spread. We have records of prostitution dating back to ancient times, so sexual disease must be very old.

Reaction Paper: Children of Heaven

The movie â€Å"Children of Heaven† is about the life of All and Sahara, two children who come from an impoverished, Muslim family. All loses his sister's only pair of school shoes, and this story is of how the two keep it a secret from their parent's, and all the things they do to keep it hidden. To me, this shows how something that's insignificant to one person, can be a big deal to someone else. Take this situation, if I were to lose my shoes, or if they got worn out, I would simply buy another pair.For others though, if their one pair of shoes got destroyed, they would repair it until it was held together entirely by glue and thread. Throwing it away would be out of the question to them. This movie made me reevaluate my life, it made me wonder about the things I was ungrateful for, for all the things I take for granted: sleeping on a mattress instead of a floor, having more shoes than I need, and having money to spare on trivial things like ice cream and whatever else caug ht my fancy.The movie showed me to appreciate the life I was even, and to show sympathy to the less fortunate, to never turn a poor man away, because he may have faced the same problems those children faced. It also taught me the value of hard work. Right now, I don't have to lift a finger, my parent's pay for everything I have. One day though, I'm going to have to earn a living, and this movie showed me how some people do so much for so little. It taught me that I'm going to have to work hard to get what I need to survive alone in this world, much like how the father of All and Sahara had to garden to feed his family.

Osteoarthritis Sufferers In The Uk Health And Social Care Essay

A multi-centre, experimental randomised clinical test is the survey design chosen as it is the recommended attack to obtain a valid comparing of viing intercession schemes ( Green, 1997 ) . The independent variable is the instructional method which will be manipulated to see whether it has any affect on the dependent variables, which are attachment and exercising public presentation. The group having the Digital Versatile Disc ( DVD ) will stand for the survey group. The group having illustrations will move as the control group as illustrations are supported by literature and presently used in standard physical therapy pattern. It is necessary to include a control group to forestall overestimate of intervention consequence. A true control group ( having no instructional assistance and doing the test a randomised controlled test ) has non been used as it would be unethical to keep back intervention clearly shown to be effectual ( Schneiders et al. , 1998 ) .RecruitmentThe test aims to be as representative of the UK population as possible to increase population/external cogency. The test will include 84 females and 56 males to stand for the 3:2 female/male ratio of degenerative arthritis sick persons in the United Kingdom ( ARC ) . Under-representation of cultural groups would impact the external cogency of comparative consequence estimations. The National Statistics Office provinces that the 2001 Census found that 8.3 % of the UK population belonged to other cultural groups and this figure appears to hold risen to 10.1 % harmonizing to the Labour Force study, 2006. Thirty per centum of participants will be recruited from other cultural groups so that 1 ) the strata is big plenty and 2 ) cultural minorities are reasonably represented. This figure will nevertheless be checked with the statistician prior to test beginning. Research suggests that people with a lower educational attainment are less likely to adhere to exert, it is hence of import to see where participants will be recruited from. A survey by the Organization for Economic Cooperation and Development ( 2005 ) showed a close correlativity between educational underachievement and countries of societal want in London. Cooper ( 2003 ) found those populating in interior London by and large achieved lower classs than those in Outer London ( appendix1 ) .Therefore to increase external cogency, 2 Inner London and 2 Outer London locations have been chosen.Inclusion StandardsInclusion/exclusion standards are used in this survey to place appropriate participants and guarantee their safety. Strict standards will guarantee 1 ) research workers can non act upon choice to favor or except certain predictive factors, therefore biasing the consequences 2 ) participants are representative of populations to whom the test ‘s findings will use, therefore k eeping external cogency. It is besides of import to see that if the standards are excessively restrictive it could restrict the size of test and the findings will miss generalization. Participants will be eligible if they are aged 50+ as 1 in 5 grownups have knee degenerative arthritis by this age and it is uncommon in people younger. By the age of 80, it increases to 1 in 2 grownups ( ARC ) . The test will hold no upper age bound so that the findings are relevant to all age groups susceptible to knee degenerative arthritis. Inclusion of older participants is peculiarly pertinent to this survey as Henry et Al ( 2000 ) found grownups aged 65+ had greater troubles retrieving exercisings which may impact attachment and exercising public presentation. Participants must hold equal hearing, vision and apprehension of written and spoken English to let equal comprehension of the exercising instructions. In pattern this may non be necessary ; nevertheless, for the interest of this test it must be controlled to forestall confusing consequences. To forestall allotment prejudice, participants will be required to hold entree to a DVD participant, irrespective of their allotment. The Office of National Statistics ( 2008 ) found that 86 % of the population owns a DVD participant. This will merely except a little figure of the population so it is considered acceptable. Radiographic grounds of degenerative arthritis, grade 2-3 on the Kellgren and Lawrence graduated table is an inclusion standard as Deyle ( 2000 ) found increased disease badness is associated with lower attachment. Guaranting all participants are mild-moderate makes the consequences comparable. Additionally, it would be unethical to supply unneeded intervention. The Nice guidelines ( 2008 ) recommend beef uping exercisings for degenerative arthritis patients ; therefore participants would be prescribed beef uping exercisings irrespective of the test. Radiographic grounds ensures patients are non given an inappropriate intervention by clinicians who may desire to increase enlisting rate.Exclusion StandardsParticipants with inflammatory arthritis will be excluded as beef uping exercisings can worsen redness in the articulatio genus articulation during a flare-up ( Luqmani et al.,2006 ) . Similarly, Sharma et Al ( 2003 ) found that in certain joint environments, such as malalignment or laxness, higher quadriceps strength was associated with a greater hazard of disease patterned advance hence such participants will besides be excluded. Participants who have antecedently been prescribed lower-limb exercisings or partaken in regular exercising categories will be excluded as they may demo increased exercising public presentation and attachment. Participants with cognitive damages may non be able to give informed consent, therefore inclusion would be unethical. They may besides hold impaired ability to retain information which could confuse the consequences. Finally, participants will be excluded if they have cardiac jobs or any serious pathology as they may hold an increased hazard of an inauspicious reaction or necessitate onward specializer referral which may detain beginning of physical therapy.ProcedureRandom allotment and allotment privacyThis test will utilize consecutive numbered, otherwise indistinguishable, opaque, certain envelopes ( SNOSE ) to randomize par ticipants and guarantee allotment privacy. Participants will be randomised as it is considered the most dependable method of making homogenous intervention groups in footings of known or unknown predictive factors ( Altman 1999 ) . It controls for unsuspected effects and increases the likeliness that any ascertained differences are caused by the experimental status, therefore increasing the internal cogency of the test. An extra protection against prejudice during randomisation is concealment of allotment. This will forestall the research worker from act uponing which intercession group each participant is assigned to, hence forestalling a choice prejudice. A choice prejudice could ensue in an overestimate of the effects of the intercession by about 40 % ( Schulz, 2002a ) . SNOSE is an economical and straightforward agencies of guaranting allotment privacy. The extra safeguards ( e.g. aluminum foil, carbon paper ) increase the trouble of uncloaking the allotment strategy. By puting the group assignment card inside a folded sheet of aluminum foil ensures the envelope is impermeable to light and run alonging the interior of the envelope with C paper allows the envelope to reassign information onto the assignment card, making an audit trail. Stratified randomization is still possible utilizing randomization envelopes by holding a set of envelopes for each combination of stratification factors.Stratific ationBaseline features such as age, gender, ethnicity and instruction will be recorded at the beginning of the test. As this is a comparatively little test, there is a greater hazard of unequal distribution of patient features between groups ( Kernan 1999 ) . Age, ethnicity and educational attainment are known to be strongly related to attachment and public presentation ( predictive ) therefore stratification is needed ( Schluz, 2002b ) . A big survey by Sluijs et Al. ( 1993 ) found attachment to place exercisings increases with age and is reciprocally relative to educational degree. Rastall et Al. ( 1999 ) and Henry et Al ( 2000 ) found grownups aged 65+ had greater trouble memory exercisings which may impact public presentation. Evidence besides suggests cultural minorities are less likely to adhere to exert ( e.g. Muse, 2005 ) . To let for 3 strata the sample size had been increased. However, as the test is to include merely 30 % of participants from other cultural groups this ma y impact stratification. Therefore, this figure will be checked with the statistician prior to the beginning of test and if found to be excessively low to adequately stratify cultural minorities, either sample size or the figure of cultural minorities included will increase further. Stratified randomisation besides helps forestall type I error ( Feinstein and Landis, 1976 ) and better power ( Lachin and Bautista, 1995 ) and is most good to tests ( such as this ) with less than 200 participants ( Schluz, 2002b ) . As the writer is unsure as to what the existent figure of participants in each stratum will be before the test commences, permuted blocks within each strata will guarantee balance between the chief intervention weaponries. Schluz ( 2002b ) suggests that it may be possible to expect the randomisation sequence in some tests that are block-randomized utilizing unvarying block sizes, hence this test will utilize two different block sizes ( 2 and 4 ) .BlindingIdeally, both participant and research worker should be blinded to avoid the comparing of interventions from being distorted ( Schluz, 2002c ) and to forestall ascertainment prejudice. This test is a single-blind survey as active capable engagement is required. The physical therapist ( who besides acts as the result assessor ) will be blinded as cognition of group assignment could make a prejudice when measuring result steps due to preconceived impressions of â€Å" expected † results. Furthermore, as the Exercise Assessment Scale has a grade of subjectiveness, blinding the result assessor will beef up their objectiveness.Strengthening exercisingsStrengthening exercisings were chosen as they have been shown to better hurting and map in degenerative arthritis patients and are portion of the NICE ( 2008 ) guidelines. Previous surveies suggest a HEP can keep betterments ( Huang et al, 2003 ; Huang et Al, 2005 ) , nevertheless long term attachment was low. This suggests a demand to set up ways to better attachment to interventions clearly shown to be effectual. The exercising strength, frequence and repeats will be tailored to the person and based on findings of recent grounds ( e.g. Richards,2004 ; Jan et al. , 2008 ) . Strengthening exercisings are besides more likely to nece ssitate specific direction than, for illustration, aerophilic exercisings and older persons in peculiar may happen exercising technique hard to retrieve.DVD directionAssorted surveies ( e.g. Grove, 1999 ) find participants utilizing exercising pictures have increased motive to exercising and are less likely to develop bad habits/techniques. It is hence hypothesised DVD ‘s will increase attachment and exercising public presentation. Additionally, if public presentation improves physiotherapist clip rectifying exercising should diminish.Result MEASURESThe Exercise Assessment Scale ( Smith et al.,2005, adapted from Rastall et al.,1999 ) was chosen as it enables elaborate appraisal of public presentation and has the highest reported dependability out of the graduated tables found. Validity of graduated table has non been officially reported, nevertheless, inter-rater dependability has been assessed ( Smith et al.,2005 ) utilizing the intra-class correlativity coefficient ( ICC ) . The ICC was 0.99 indicating first-class inter-rater dependability ( Shrout and Fleiss, 1979 ) . Prior to the test, preparation will be given to guarantee truth and consistence of measuring is increased therefore increasing statistical power. As the measuring has a grade of subjectiveness, appraisals will be recorded so that public presentation can be analyzed post-intervention to guarantee participant scaling is tantamount. Participants will utilize a self-report log to mensurate attachment to their HEP. It is a normally used step which has been found to be dependable when compared to spouse studies ( Follick et al. , 1984 ) and nonsubjective pedometer values ( Speck,2006 ) back uping the cogency of the step. The recognized benefits include the ability to roll up informations from a big figure of people at low cost and that it does non change the behavior of the person ( increasing ecological cogency ) . However, as the step is subjective, Vitolins et Al ( 2000 ) recommends more than one method should be used to measure attachment. A widely used nonsubjective step of per centum attending to physiotherapy Sessionss will besides be used. Direction clip will be assessed as rectification of exercisings utilizations valuable physiotherapy clip that could be spent on accessory interventions. It is hence of import to mensurate the effectivity of any intercession in cut downing clip allocated to exert rectification.AnalysisMeanss and standard divergences will be calculated for all variables. For parametric informations ( e.g. figure of repeats, exercising frequence ) the agency of the two groups will be compared utilizing the independent-sample t-test as the survey is experimental in design, comparing 2 groups of topics ( Hicks, 2004 ) . The Exercise Assessment Scale provides ordinal informations ( Smith et Al, 2005 ) , hence a Mann Whitney U trial ( a non-parametric trial ) will be used. P-values are used to find whether a void hypothesis formulated before the survey commenced is to be accepted or rejected. To cut down the hazard of type II mistake, the degree of significance will be set at P & lt ; 0.05. In explorative s urveies such as this, p-values enable the acknowledgment of any statistically notable findings. Assurance intervals will besides be used as they provide a scope of values for the variable of involvement ( the step of intervention consequence ) . This scope has a specified chance of including the true value of the variable, every bit good supplying information about the way and strength of the demonstrated consequence. Decisions can so be made about the clinical relevancy and the statistical plausibleness of the survey ‘s findings. Both statistical steps will be reported because they provide complementary types of information ( Prel,2009 ) . Purpose to handle analysis will be used as it retains balance in predictive factors originating from the original random intervention allotment and gives an indifferent estimation of intervention consequence. Additionally it gives a more valid representation of intervention efficaciousness as it relates to clinical pattern ( Pocock, 1983 ) .Time REQUIREDThe test is 18-months to let for a sufficient accrual period and for a long-run intercession. The writer contacted a similar sized Outpatient section, which reported about 30-40 patients present with degenerative arthritis over a 6-month period. In add-on participants will be recruited from physician ‘s surgeries and orthopedic waiting lists. It is estimated that 12-14 participants at each infirmary will come in the test during each enlisting stage. The minimal figure required is 12 so that 140 participants are recruited by the terminal of recruitment stage-3. If merely 2 participants at each infirmary are recruited each hebdoma d, it will necessitate a 6-week accrual period for each stage of the test. The clip to enroll the mark population is frequently under-estimated ( Carter,2005 ) therefore the accrual period has been increased to 8-weeks to guarantee equal Numberss are reached. The intercession period will be for 1-year as a recent reappraisal ( Jordan,2010 ) identified a demand for tests with long-run follow ups which explicitly address attachment.Forces REQUIREDFour physical therapists, one from each infirmary will be required to work 153 hours over the 18-month test. Participants will be seen 9 times by their physical therapist. The initial session will be 45minutes and the staying Sessionss will be 30minutes ( as criterion in physical therapy pattern ) . The 3 enlisting and intercession stages are staggered, hence, if the physical therapist sees 3 participants per hebdomad ( the required 12 per month ) and assignments are made for the same clip each month, the physical therapist will be required to work 0-4.5 hours per hebdomad ( see physical therapist timetable, appendix2 ) . The physical therapists will be employed on an hourly footing. The research helper will be employed on a parttime footing to randomize participants and publish the instructional A IDSs.ETHICAL ISSUESThis survey addresses ethical considerations highlighted the by the Chartered Society of Physiotherapists ( 2001 ) publication on research moralss ( Appendix3 ) . The survey aims to be of â€Å" value † and to better the wellness of patients with degenerative arthritis of the articulatio genus. It is of import that the test is published so that the participants have non been unnecessarily inconvenienced and subjected to possible hazards. Therefore this test will merely take topographic point after blessing and understanding to print by a well-thought-of diary.