Reading Response Essay Example | Topics and Well Written Essays - 250 words - 16

Reading Response - Essay Example The world stood still on this date, aghast and astounded at the magnitude of terror, questioning the intentions of the terrorists and never finding an answer that fully satisfies one’s understanding because the event itself defies reason. Habermas tries very hard to capture the impact it had on the world by giving a litany of situations around the globe and what people thought about it. At the same time, he attempts to understand the political motivations of the terrorist attack and compare it to the beliefs and responses of the people it affected. There is a world of a gap in such beliefs especially right after the event itself. The people the terrorists belonged to may have been in a celebratory mood for the success they achieved in shattering the hopes and dreams of thousands of Americans while the Americans, on the other hand, fell on their knees in desperation, in fear, in prayer. Derrida was profuse in his expression of how the September 11 event left an indelible mark in history and how powerful its impact was on its witnesses, which pertained to the whole world. He embodied a true philosopher’s stance of saying his piece to force one to think deeply about the issues and get himself philosophizing about it too. Somehow, both interviews, although too profound for most to understand, managed to make readers ponder about how the time of terror affected them and the world and how it would translate to their

Case assignment cultural Identity Essay Example | Topics and Well Written Essays - 500 words

Case assignment cultural Identity - Essay Example 2. To what extent do you think cultural beliefs, values, and traditions may impact health education efforts? Please provide examples of negative and positive impacts that apply to the case studies from the video. Cultural beliefs, values and traditions play a crucial role in the health-care setting. As emphasized in the National Transitions of Care Coalition (NTOCC) (n.d.), â€Å"health care professionals increasingly recognize the crucial role that culture plays in the healthcare of a client or patient and the need to deliver services in a culturally competent manner† (p. 1). Therefore, the ability of health care professionals to educate the patients on the most effective intervention would depend on the ability to communicate messages that accommodate understanding cultural beliefs, values, and traditions. In the case studies from the video, the good cross-cultural patient communication scenario clearly depicts that the following elements assist in effective efforts for health education: (1) eliciting information on the cultural remedies; (2) demonstration of acceptance of patient’s views; (3) accommodating the health beliefs of patients; (4) explores understanding of the cultural impact; and (5) empathizes and supports the patient’s perspectives and cultural views (University of Michigan: Lesson 1, 2010). On the other hand, the bad cross-cultural patient communication scenario exemplified negative impacts on health education and cultural competence: (1) not demonstrating acceptance of patient’s view; (2) not eliciting information on cultural remedies; (3) not accommodating health beliefs; and (4) not empathizing and supporting the patient’s perspectives and cultural views (University of Michican: Lecture 2, 2010). Based on the video, one would suggest to health professionals who want to improve their cross-cultural communications

The Best Way to Increase Work Motivation Essay Example for Free

The Best Way to Increase Work Motivation Essay Introduction The purpose of this essay is to distinctively identify the effects of financial rewards on the work motivation of an organization and also whether or not this system of reward can cause an increase in the levels of work motivation already present in the organization. It furthermore aims to discuss weather Financial Rewards are the best way to increase the work motivation present. Although the essay shall primary be focused on Financial Rewards and Work Motivation, other factors that may have an effect on work motivation shall be discussed. For this purpose the understanding of work motivation shall be taken as such: The factors that are internal and external to employees that determine when he or she works, how hard he or she works and how long he or she works (Colquitt, Lepine and Wesson, 2009, pp.178-179). Furthermore the understanding of Financial Rewards to be undertaken is : The entire Reward System which focuses on Salary, Bonuses, Incentives etc., which aims to increase the amount of effort put in by the employees to achieve their work goals and increase work motivation in the organization as a whole (Hollyforde and Whiddett, 2002, p.166). By the conclusion of this essay the need for Financial Rewards its importance and status as apparently â€Å"the best way† to increase work motivation shall understood. There have been countless efforts over the years to understand the numerous factors and desires that determine and help to fully appreciate the intensity, quality, efficiency and reliability of the work performance of an employee. Since the eventual progress of learning and observation of the environment and factors has led to the conclusion that an employee’s performance is one of the most distinguishing factors that the organization or a business needs to cultivate in order for the organization to succeed. Work has always existed and been around in one form or another throughout our history but it is only in the recent couple of decades that we have come to understand the motivation to work or simply work motivation (Kressler, 2003, p.3). We must also take into consideration that different ways of motivation are influenced or can be influenced by the cultural context that it is applied in. People of different cultures may be motivated in different ways by the same rewards or incentives. The System of Reward must not differ substantially from the culture it is implanted in. However we must also note that most motivational theories are biased in the sense that they are US centric and based on studies conducted on test sample populations that may reflect cultural connotations and behaviors only found in the US.(Chiang and Birtch, 2012, pp.538-541) A Theory that seems to understand the disadvantage of a system solely focused on Financial Rewards is the Cognitive Evaluation Theory by E.L. Deci in which Financial Rewards would be seen as the External locus of Control and as understood by this it lessens the intrinsic motivation of the employee or person. It is assumed that activities are likely to be sustained longer if started by being motivated by intrinsic motivation and not an extrinsic motivation (Hollyford, et al, 2002, pp.37-38). According to the description by Kallberg and Rognes (2000) Non-financial rewards tend to have more broader aspects regarding improving performance and are focused on motivation for the long term of an organizations towards their employees. On the other hand as per Hofstede’s Topology in the category of Individualism-Collectivism explains Financial Rewards as being short-term and transactional in nature hence they are preferable for individuals who emphasize the aspects of individual contribution, individual ability and those that support that personal efforts are ultimately responsible for the job outcome. It is also suitable to people who see an increase in Financial Rewards as an attainment of Higher Status and Authority in the organization.(Chiang, et al, 2012, pp.542). Offering Non-Financial or pay benefits have been seen to have a positive effect as quoted by Francois Podeur, â€Å"The employees prove a high degree of organization commitment, are more loyal, feel more motivated to exceed their limitations and personal growth.†(Ciorbagui-Naon, 2010, pp.44) On the other hand as stated in Victor Vrooms Expectancy Theory in 1964 that when rewards are offered employees effort is increased and Money is almost always used as it is supposedly the most powerful and influential incentive in society and is already in fact largely used. . (Zani, Rahim, Junos, Samanol, Ahmad, Merican, Saad and Ahmad, 2011, pp.328-329) Since money is the basis or foundation of financial rewards and most Reward Systems the value of money against work motivation can be directly quoted as follows: â€Å"Money is not everything, Many would be happy with more time off, or more job security, than more money. People are prepared to trade off things for money once they have enough or grow weary of the game.†(Furnham, 2006, p.26-27) Furthermore several studies that have been carried out regarding the relative importance of pay or money have shown that money or pay ranks below factors such as job satisfaction, recognition, good people to work with etc., But the tendency of people to rate the things and factors which are regarded as more socially acceptable or less socially acceptable higher or lower respectively, the results of such studies could have varied or misleading results (Armstrong, 2010, p.143-144). In Concurrence with the above, according to Deming â€Å"Pay is not a motivator† as it buys the things people want but it does not motivate you to work. There is no research that supports paying people more money will encourage them to better the work performance, especially in the long run. This is also agreed upon by Kohn (1993) and Turner (2006). But the studies also concluded that it has a slightly higher or lower effect in different industries for example as in a study by Turner(2006) conducted on factory workers and service businessmen which found little relation between performance and financial incentives in factory workers but found the opposite when the study was conducted on service businessmen. (Zani, et al, 2011, pp.330). Although Financial Rewards are supposedly provided equally according to the Principle of Distributive Justice, this is not always so as most systems are individualistically designed that they cater towards one person’s performance on the whole and may serve to de-motivate the average and low-performance attaining employees. Furthermore according to studies by Thompson (1992b) and Marsden and Richardson (1994), financial incentives related to pay have little to no effect in increasing motivation and work performance. Also according to these studies the effects of Financial Rewards are hard to determine as there are debatable or skeptical ways of monitoring its effectiveness and to also take into consideration the other factors that at the same time may be in effect that may affect performance and motivation such as innovation, new technology etc. Another factor that must be taken into consideration is the way Financial Reward are introduced into the organization and the principles and practices used implementing it, according to a study conducted for The Department of Employment in the UK by Bowey and Thorpe successful l outcomes are more dependent on the effectiveness of communication and Support systems rather than the pay design or financial reward provided. (Armstrong, et al, 2010, pp.147-150). Conclusion On the basis of the above information reviewed and analyzed we can conclude that while financial rewards are the most commonly used and implemented system of reward used today it is not necessarily the best way to increase work motivation on the whole, for the organization. The use of financial rewards cannot be rejected or discarded as it plays a part in motivating an individual but it must be taken into consideration that Financial Rewards work best when within the Framework of an Integrated system of reward that combines both Non-financial and Financial Rewards together. The system that might work best is a system that takes into consideration also the cultural context in which it is placed as this may have an effect on the performance of an individual due to a reward used. Also the ratio of Financial Rewards to Non-Financial Rewards affectedness is dependent on the industry or sector it is situated in. References Armstrong, M. (2010). Armstrongs Handbook of reward Management Practice Improving Performance through Rewards. 3rd ed. London: Kogan Page Limited. pp.143-144. Armstrong, M. (2010). Armstrongs Handbook of reward Management Practice Improving Performance through Rewards. 3rd ed. London: Kogan Page Limited. pp.147-150. Chiang, F.F.T. and Birtch, T.A. (2012). The Performance Implications of Financial and Non-Financial Rewards: An Asian Nordic Comparison. Journal of Management Studies. Vol.49, No.3, pp.538-541 Chiang, F.F.T. and Birtch, T.A. (2012). The Performance Implications of Financial and Non-Financial Rewards: An Asian Nordic Comparison. Journal of Management Studies. Vol.49, No.3, pp.542 Ciorbagui-Naon, R. (2010). Modalities of Non-Financial Motivation of Employees Within Organisations. Annals of the University of Petrosani Economics. Vol.10, No.4, pp.44. Colquitt, J., Lepine, J. and Wesson, M. (2009). Organizational Behavior Improving Performance and Commitment in the Workplace. 2nd ed. New York: McGraw-Hill/ Irwin. pp.178-179. Furnham, A. (2006). Pouring Money Down the Drain?. British Journal of Administrative Management. Vol.53, Issue.2, pp.26-27. Kressler, H. (2003). Motivate and reward Performance Appraisal and Incentive Systems for business Success. Hampshire: Palgrave Macmillan. pp.3 Hollyford, S and Whiddett, S. (2002). The Motivation Hand book. London: CIPD House. pp.37-38. Hollyforde, S. and Whiddett, S. (2002). The Motivation Handbook. London: CIPD House. pp.166. Zani, R. Md., Rahim, N. A., Junos, S., Samanol, S., Ahmad, S. S., Merican, F. M. I., Saad, S. M. and Ahmad, I. N. (2011). Comparing the Impact of Financial and Non-Financial Rewards Towards Organizational Motivation. Interdisciplinary Journal of Contemporary Research in Business. Vol.3, No.4, pp.328-329. Zani, R. Md., Rahim, N. A., Junos, S., Samanol, S., Ahmad, S. S., Merican, F. M. I., Saad, S. M. and Ahmad, I. N. (2011). Comparing the Impact of Financial and Non-Financial Rewards Towards Organizational Motivation. Interdisciplinary Journal of Contemporary Research in Business. Vol.3, No.4, pp.330.

Evolution of Virulence in the Ebola Virus

Evolution of Virulence in the Ebola Virus The Ebola virus is a member of the Filoviridae family of virus and is the pathogen responsible for Ebola Hemorrhagic Fever, an emerging disease that appears in infrequent epidemic outbreaks mainly in sub-Saharan Africa. The Ebola Virus is composed of several distinct subspecies, ranging from the extremely virulent Ebola Sudan and Ebola Zaire Viruses to the asymptomatic (in humans) Ebola Reston. Many outbreaks of Ebola Hemorrhagic Fever display mortality rates approaching 90%. Application of evolutionary concepts of disease and virulence evolution can be used to help explain this high level of virulence. Another important factor is the possible presence of less virulent outbreaks of Ebola Hemorrhagic Fever that go unreported due to small scale and lack of characteristic virulence A further understanding of the selective mechanisms behind virulence may suggest strategies to impose selection for less virulent strains of the virus and to develop possible vaccines, thus helping to curb th e deadly effect of Ebola outbreaks. The Filovirus family contains the Ebola Virus genus and the closely related Marburg Virus. Both of these genera are known to cause extremely dangerous hemorrhagic fever type illnesses. These Viruses are contain a single strand of negative RNA and typically measure 1400 nm in length with a diameter of approximately 80 nm. The various species of Ebola virus sporadically infect both human and non-human primates, causing Ebola Hemorrhagic Fever. Recent evidence suggests that the virus may have a natural reservoir in various bat populations. The virus sporadically jumps from this natural host species (in which it is avirulent) to host species such as chimpanzees, macaques, gorillas and humans where it typically exhibits high virulence. The mechanisms of this transition and the role of reservoir hosts is poorly understood at present (Leroy et al 2005) The Virus is transferred through direct contact with infected bodily fluids, most frequently by means of direct contact with an infected individual. Contaminated medical implements can also spread the infection in medical settings, especially during early stages when an epidemic has not yet been fully realized. In many of the early outbreaks this was a major means of transmission, due to the presence of the virus and nature of its transmission being poorly understood. Local funerary customs also contributed to the spread of the disease. Isolation of infectious patients, proper disposal of contaminated remains and excreta and use of efficient sanitation and barrier nursing techniques can effectively prevent transmission during an outbreak. It is important that these measures be implemented immediately upon suspicion of Ebola Hemorrhagic Fever in order to minimize spread of the virus within the community (Ebola virus disease in southern Sudan 1983). Initial during initial stages of infection the Ebola virus selectively targets dendritic cells, monocytes and macrophages, which spread through the circulatory and lymphatic systems to the liver spleen and lymph nodes. From here the virus can efficiently spread throughout the body. The infected monocytes and macrophages also release massive amounts of cytokines, helping to trigger virus-induced shock by causing damage to the endothelial structures. Infected dendritic cells are prevented from releasing costimulatory cytokines necessary for the production of T-cells, preventing sufficient immune response to the infection (Aleksandrowicz et al 2008). Symptoms of Ebola Hemorrhagic Fever usually manifest 2-21 days after infection. Initial symptoms include fever, weakness, aches in the muscles and joints, sore throat. These progress to rash, impaired liver and kidney function and in some cases both external and internal bleeding due to deterioration of the vascular lining (World Health Org anization). The massive release of cytokines and virus particles from monocytes and macrophages impairs the function of endothelial tissue, allowing it to become permeable to water and macromolecules (Aleksandrowicz et al 2008). Gastro-intestinal bleeding is a common symptom, and is frequently associated with lethal cases. (Ebola Haemorrhagic Fever in Zaire 1978) The First known outbreaks of the Ebola virus occurred nearly simultaneously in Zaire (modern Democratic Republic of the Congo) and Sudan in 1976. These outbreaks, although close both geographically and chronologically were caused by two distinct subspecies of the virus (Ebola Zaire and Ebola Sudan respectively). The Zaire outbreak was centered in the village of Yambuku and its environs. 318 cases were reported in this epidemic, of which 280 were fatal (mortality 88%). All cases in this epidemic were tied to either close contact with a confirmed case or receiving a parenteral injection at the local hospital (Ebola Haemorrhagic Fever in Zaire 1978). Early cases in the Sudan outbreak were textile workers from the town of Nzara. 151 of the 284 reported cases were fatal (mortality 53%) (Known Cases and Outbreaks of Ebola Hemorrhagic Fever). Three years later, in August of 1979 another, smaller scale outbreak occurred in Nzara and the nearby town of Yambio, resulting in 34 cases, with 22 f atalities (65% mortality) (Center for Disease Control, 2006). Communities affected by these outbreaks share several characteristics. One of the most significant of these is the nature of available medical care. All were served by small, undersupplied and understaffed hospitals. Unsanitary conditions within these hospitals and the prevalence of family members carrying out day to day care for afflicted individuals being allowed the virus to spread quickly through the local population. The Yambuku hospital utilized five needles and syringes for prenatal, inpatient and outpatient wards, with little sterilization between uses. This fact alone almost ensured transition of the virus between patients in the hospital. Lack of barrier nursing practices also allowed high transmission to the staff (11 of the 17 medical staff died as a result of Ebola Hemorrhagic Fever) and caregivers as well A high prevalence of infection was found amongst individuals present at funerals of deceased patients in all outbreaks. The reproductive success of a pathogen is dependent upon its ability to replicate itself and to infect new hosts by transfer of its propagules. Rapid replication can increase a pathogens chance of transference, but this requires a greater toll on the hosts system and is likely to lead to an increased chance of host mortality. Due to this, there is believed to be a natural correspondence between a pathogens growth rate and virulence. The relationship between these two factors is explained by the trade-off hypothesis of virulence evolution. This theory largely replaced the commonly accepted idea that a parasite or pathogen should evolve towards avirulence, but it not fully accepted. The avirulence theory assumed that a parasite low virulence would maximize a pathogens overall lifetime reproductive success by increasing the time of infection to nearly infinite limits. The reasoning behind this theory has been explained thusly: The parasite makes a profession out of living at its neighbours expenses and all its industry consists of exploiting it with economy, without putting its life in danger. It is like a poor person who needs help to survive, but who nevertheless does not kill its chicken in order to have the eggs (Van Beneden 1875). The frequent down trend in virulence from the time a pathogen is introduced to a novel population was offered as evidence for this theory. The trade-off theory developed when evolutionary ecologists began to question the avirulence theory. It proposes that there is a link between ease of transmission and virulence. According to this theory, virulence is an outgrowth of a rapid replication rate in the pathogen, which strains host resources and reduces host fitness (resulting in host mortality). The Trade-off theory links the variables of virulence, transmission and host recovery in a relationship summarized by the following mathematical model: (Alizon, Hurford, Mideo Van Baalen 2009) In the above equation R0 represents the pathogens baseline reproduction ratio, in this case a measure of relative fitness. The S value is the number of susceptible hosts within a population. ÃŽÂ ² represents rate of transmission, ÃŽÂ ± is the death rate in the host due to infection (virulence), ÃŽÂ ¼ stands for the natural death rate in the host population, and ÃŽÂ ³ is a factor representing the recovery rate from the infection. According to this model, any change in virulence, transmission rate or recovery rate will have an effect on the other two variables. A high transmission rate will typically go along with a high virulence and low recovery rate. The reproductive success of a pathogen comes from successfully balancing these variables to maximize R0 (Alizon et al). High Virulence will allow for high reproduction and transmission, but only up to a point. Natural selection should favor strains that are able to maximize this trade-off. Eventually, virulence can reach a l evel where the increased transmission is no longer balanced out by the risk of dying along with a host before being able to jump to a new one. This is especially true in isolated host populations or other conditions that limit horizontal transmission, which could possibly explain the low virulence and chronic nature of some infections. Virulence is typically defined as morbidity and mortality of the host organism as a result of parasite or pathogen activity. Measurements of a pathogens virulence are traditionally given in terms of parasite induced death rate (PIHD). This definition is suitable for a general discussion of a disease as it includes all deleterious effects on the host. A more specific and narrow definition is required in order to examine selective pressures on the evolution of virulence in a disease, however. The generalized definition, according to Ebert and Bull in their work on virulence evolution, fails to differentiate between virulences effects on host and pathogen fitness, and therefore fail to give an accurate assessment of selective pressure on the pathogens evolution. For this reason it is important to consider specific aspects of the host/pathogen system (such as means of transference, rate of pathogen growth, etc) before drawing conclusions about the selective pressures for increased or red uced virulence in the pathogen (Ebert Bull 2008). In the case of the Ebola virus and Ebola Hemorrhagic Fever virulence can be discussed in terms of host death. Unlike with some pathogens, death of the host does not immediately end transmission of the virus. Some studies indicate that the corpse can remain infectious for several days after death. Several epidemics have been traced to contact between the index case and the contaminated remains of a chimpanzee (Ivory Coast 1994, Gabon 1996, Gabon 1996-97) (Chart) and contaminated monkey meat may have played a role in the index case of the initial 1976 Zaire outbreak (Ebola Haemorrhagic Fever in Zaire 1978). Ebert and Bull define three general stages of evolution in a pathogen transferring to a novel host and the selective pressures involved in each. The first phase includes the initial interactions between a pathogen and the novel host. In some cases this infection is not capable of horizontal transfer between hosts in the novel population. Other situations involve short chains of secondary infection from the index infection. Infections in this phase are likely exposed to great selective pressures, as they are in an entirely new environment, one for which their genes may or may not be particularly suitable. Genes that may not have had a measureable fitness effect in the pathogens normal host environment can suddenly exert great selective pressure. Because of this there is frequently a great range of virulence expressed by different pathogens during this phase. The second phase occurs during the period when a pathogen has established a foothold within the novel population. It follows the epidemic infection model and increases rapidly within the population, because of this rapid growth it is possible for a pathogen to evolve rapidly in this phase. Selective pressure on the host can also be extreme in this phase. The second phase also applies when a mutation in a parasite that has already obtained equilibrium within a host population is significant enough that it gains a selective advantage over other strains and spreads rapidly. Ebert and Bulls third phase is reached when a pathogen has become firmly established within a host population. Pathogens in this phase are well adapted to the host, but will still experiences selective pressures due to host demographic and environmental changes. The Ebola virus, in human hosts, remains largely within the first phase, although it could be argued that it briefly enters the second phase on a local level during some outbreaks. It causes short lived epidemics when it does infect a human population, but fails to survive long term and become an endemic pathogen. During this initial stage the virus can be exposed to great selective pressure as it is in an unusual host. Evolutionary dynamics within an epidemic scenario, as proposed by Bolker et al, favor pathogens with a high growth and transference rates, and the high virulence that is associated with them, due to the large number of susceptible hosts in the novel population. This differs from a pathogen in later stages, which has reached dynamic equilibrium with the host. These situations tend to select for moderate virulence and longer duration of infection. (Bolker et al). A possible explanation for the extreme virulence in Ebola outbreaks may simply be reporting bias. Many of the early and milder symptoms of Ebola Hemorrhagic Fever are quite similar to those of other diseases endemic to the region, such as malaria, and measles. Some outbreaks are actually mistaken for cases of other diseases until post-infection laboratory tests detect particles of an Ebola strain. A 1994 outbreak in gold mining camps in Gabon (52 cases, 60% mortality) was believed to be a yellow fever epidemic until almost a year after the last case. It is possible that less virulent strains of the virus are simply mistaken for other common infections, treated as such, and never reported (CHART). Ebola virus antibodies were detected in sera from 18% of adults in the 1979 Nzara outbreak who were not infected. This is evidence that It is likely that sporadic infection is more common than can be appreciated from these dramatic outbreaks, which probably represent the extreme of the inter action between man and the virus. (Baron et al). This fits in with the inherent virulence variance in phase one pathogens suggested by Ebert and Bull above. Other factors that can affect the evolution of virulence in a pathogen are host population density and ease of transmission. These factors are frequently interrelated, as both directly influence the number of susceptible hosts a pathogen is able to infect during its lifespan. A high density of susceptible hosts (such as when a pathogen is emerging in a novel host population) is likely to greatly increase greatly increase a pathogens reproductive success, and select for pathogens that can replicate quickly and take advantage of the abundant hosts. Likewise, easy transition from one host to the next also selects for pathogens that are able to rapidly replicate and seize the day, as it were. Both of these conditions, which favor pathogens with high growth rates, also favor high virulence in accordance with the Trade-off hypothesis (Ebert Bull 2008). The abovementioned concepts and principles fit in with epidemiological data from outbreaks of Ebola Hemorrhagic Fever. Initial outbreaks of Ebola Hemorrhagic Fever took place within areas with a relatively high concentration of susceptible hosts. The 1976 outbreak centered on the Yambuku Mission Hospital is a good example. This hospital served as the primary medical facility for a local population of around 60,000 as well as travelers. This facility was relatively small, having 17 staff members and holding 120 beds in its crowded wards. It also processed some 6000-12000 outpatients on a monthly basis. Combine this with the five improperly sterilized syringes used to administer injections (the primary dosage method at this facility) and a severe lack of barrier nursing procedures. This would appear to be an optimal situation for the transmission of pathogens that spread through contaminated body fluids. According to the Trade-off Hypothesis and the selective conditions outlined above, pathogen strains that have high reproduction rates (and hence high virulence) would be at a distinct selective advantage. Cases cared for out of the hospital setting would also tend to favor quickly reproducing and more virulent pathogens. Horizontal transfer by physical contact is directly affected by the concentration of virus particles in a contaminated fluid; hence a virus with a higher reproduction rate would be able to successfully exploit a given number of transfer opportunities. This setting lacks the direct viral inoculation by contaminated needle present in the hospital setting, which would perhaps result in less effective transmission. This would also favor more strongly virulent pathogens, which reproduce quickly and successfully exploit transmission opportunities (Ebola Haemorrhagic Fever in Zaire 1978). The conditions present during the 1976 Sudan outbreak were largely similar. Transmission occurred mainly to family members providing nursing care (without barrier nurs ing techniques) and through contaminated medical equipment and direct contact in a hospital setting. These conditions would also seem to favor more virulent pathogens. Other examples of particularly high virulence outbreaks (in terms of host mortality) also occur under conditions with large amounts of close contact between potential hosts, likely resulting in high transmission. Examples of these situations are found in the 1994 and 1996-97 Gabon outbreaks, which took place at a mining camp and (initially) a remote forest camp respectively. Both of these outbreaks featured transmission of numerous secondary infections through close contact with infected individuals. According to the Trade-off hypothesis, high transmission rates are linked to high levels of virulence. By reducing rate of transmission it may be possible to artificially select for less virulent strains. In the hospital and home care setting, hosts suffering from highly virulent strains with high symptom manifestation (high virulence) are likely to transmit the virus to other hosts, favoring virulent strains. Application of sanitation and barrier nursing practices can reduce transmission of the virulent strains present under these conditions. This could potential favor any less virulent strains, i.e. ones that do not manifest severe symptoms that require hospitalization and are unlikely to be fatal, present in the environment. This could gradually reduce overall virulence over the course of the outbreak. Even if less virulent strains are not present, prevention of transmission is likely to slow and eventually stop the outbreak as the number of remaining susceptible hosts is reduced through various means (Ewald 2004). The Ebola Virus and Ebola Hemorrhagic Fever present an interesting case for evolution of virulence in a pathogen. The periodic outbreaks of the disease offer examples of how selective pressures imposed on a pathogen follow the predictions of the Trade-off hypothesis linking virulence (and attendant host mortality) with rate of transmission. This hypothesis and the conclusions it suggests fit with data observed in outbreaks of virulent Ebola Hemorrhagic Fever. Conditions of dense susceptible host population and rapid and effective transmission seem to demonstrate high incidences of virulence indicating that there may be selective pressure for virulent strains under these conditions. Evidence of strains showing low virulence is suggested by the Ebola virus presence in a natural reservoir species and by the formation of antibodies by healthy individuals not linked to current epidemics. Due to this (presumed) variation amongst strains and the relationship between transmission and virulen ce proposed by the Trade-off hypothesis, reduction of transmission of the virus in hospital and homecare settings may lead to a reduction in strain virulence in prolonged outbreaks.

Internet Privacy :: Essays Papers

Internet Privacy The e-commerce merchant (Tanaka, 1999). Table 1 illustrates some types of information collected by websites. Table 1 Personal Information Collected Type of Information Number of Sites1 Percent1 Personal Identifying 335 92.8% Demographic 205 56.8% Personal Identifying Only 132 36.6% Demographic Only 2 .6% Both Personal Identifying & Demographic 203 56.2% None 24 6.6% 1 Number and Percentage from base of 361 surveyed websites. Source: Georgetown Internet Privacy Policy Survey: Report to Federal Trade Commission June 1999 The consumer may feel a name or address is a small price for the item or piece of information they will receive. Usually, the consumer does not understand or take the time to find out the use of the information after placement in the websites’ database. This electronic data gathering on consumers using the Internet by e-businesses creates the demand.

Socioeconomic Class and the History of South Africa :: African Africa History

Socioeconomic Class and the History of South Africa In any historical account gender, race, socioeconomic class and many more issues are closely interwoven. In fact, to try and separate them would be not only onerous but also a specious task because the resulting account, although perhaps straightforward, would be at best only partial. However, when considering the history of Southern Africa, the most encompassing account would be that of socioeconomic class. The motives behind the historical events of Southern Africa have been strongly socioeconomic, even if the motives then evoked racial or gender based issues. Thus, if one had to choose a way to understand South African history, it should be socioeconomically. The motivation for colonization was economic. It eventually became more economically efficient for the Dutch East India Company (VOC) to build its own port than to continue trading with Africans on its way to Eastern Asia (Ross, 21). Dealings between settlers and Africans were based on socioeconomics, whether the interaction was buying and selling cattle and sheep or a conflict over the amount of land that settlers were taking from the Xhosa. For Africans, using a large amount of land for grazing one’s cattle was a symbol of high status because it meant that you had many cattle to graze and that you could protect a large amount of land (Ross, 22). The settler’s invasion was an economic blow. Also, the Great Trek was caused because Afrikaaners felt that they did not have the socioeconomic status they desired. Their land was being divided into small pieces, so they decided it would be better to go out and find other land than to continue to live as they were in the lower class. This was no mass movement of the â€Å"Afrikaaner People,† but only a number of small groups setting out to claim â€Å"free† land for themselves (Ross, 39). The wars between the Africans and Trekkers at these times were fought as the Africans realized that these people were coming to stay on their territory, and as the Trekkers realized that they would have to kill to keep the land they needed to secure wealth (Ross, 40).

Jewish Sexual Ethics Essay

Sexual Ethics are integral to Judaism because they provided direct guidance on how to behave morally and in accordance with the Torah and God. Although, over many years Jews were suffering from persecution, they are currently showing stability which can be attributed to the framework that is outlined through the strong ethics that they uphold. Sexual ethics provide guidance on how to behave morally, righteously and in accordance to the Torah as well as preventing promiscuity, infidelity, immorality and sexual acts which hinder the constancy of Judaism. The teachings on Adultery, homosexuality, contraception and pre-marital sex provide a framework for Jewish conduct through re-iterating the principle beliefs of monogamy, procreation, fidelity and the covenant made between Moses, Abraham and God in a practical manner. Sexually ethical conduct is essential as it promotes behaviour that is respectful, consensual, faithful, morally correct and righteous. Sexually ethical conduct provides Judaism with moral framework for procreation, fidelity and the ability to maintain faith. Adultery is the most valued sexual ethical teaching in Judaism because it breaks the covenant made between Abraham and Moses and defies the principle beliefs of love and fidelity. Adultery directly defies the Jewish belief of love, commitment and the sacred institution of marriage and is immoral because it put in jeopardy the family unit which disintegrates love between partners and inturn breaks honest and trust. In addition to this, as monotheists, Jews believe in fidelity and procreation and adultery damages and destabilises the social framework for Jewish conduct thus providing behaviour that is evil and unethical. The universal condemnation of adultery by Orthodox, Conservative, Reform and Liberal Jews indicates that adultery is immoral as it breaks the word of God. The united stance on adultery reflects the value of marriage and this is evident in the Torah where it states, â€Å"Do not commit adultery† in the Ten Commandments. This is further emphasised in the commandment, â€Å"You shall not covet your neighbours wife. † Furthermore, the universal condemnation of adultery by all Jewish variants reflects Jewish beliefs as t protects society from promiscuity, disease and deformed birth which have the potential to jeopardise the framework for Jewish conduct and hence continue the tradition in stability and morality. This results in society being spiritually and ritually clean, also promote the belief of fidelity and honesty, which will inturn encourage Judaism to be moral and stable. Sexually ethical conduct is crucial promotes the beliefs in God’s true intentions; that love was between a man and a woman. In addition to this, the morality and stability of Judaism is affected by the restriction of procreation which comes with the act of homosexuality. The importance of life and procreation is clearly evident in the Jewish stance on homosexuality as Jewish religion and community is against homosexuality, regarding it as sinful, whether gay or lesbian, as it destabilises the framework for Jewish conduct. Homosexuality is not the ideal state in Judaism and is a challenge to the ideal of marriage and family as it inhibits longevity and continuity of the tradition thus destabilising the religion through immoral acts. It is important to note that it is homosexual acts, not homosexual orientations that are forbidden as Judaism focuses on a person’s actions rather than a person’s desires. In addition to this, it defies sodomy, hence promoting the principle beliefs of fidelity and ritual cleanliness. Homosexuality defies the direct word of God to ‘Go forth and multiply’ (Genesis 1:28), because it promotes infidelity, ritual uncleanliness and consequently jeopardising the framework for Jewish conduct. This can be reinforced as stated it Leviticus, â€Å"No man is to have sexual relations with another man, God hates that†. (18:22). Such an act is condemned in the strongest possible terms as it is abhorrent and is punishable by death by the Orthodox Jews. The Orthodox stance on homosexuality can be reinforced as Leviticus states, â€Å"If a man lies with a man as one lies with a woman, both of them have done what is detestable. They must be put to death† (20:13). Furthermore, progressive and conservative jews are more likely to accept homosexuality, but those who are homosexual are discouraged from practising and expressing their inclination. The act of homosexuality may not be an ideal state in Judaism but due to modern advancements, is slowly making its way into becoming accepted. Sexually ethical conduct is essential as it allows Jews to follow a framework that has established the belief in the need for procreation. The act of spilling seed directly defies and destabilises the belief in procreation and the right to bear children with your partner. In addition to this, the act of contraception defies the mitzvah to marry, procreate and have children. The methods of contraception allowed under Jewish law are those that don’t damage the sperm or prevent it from getting to the intended destination, such as contraceptive pill. This is because the Tenakh states that God wanted humans to populate the earth. The religious view on birth control is based on the principle that it is a commandment to marry and have children and it is forbidden to â€Å"waste seed†. This law is based on the story of Onan (Gen 38:8-10) who was killed by God for practicing coitus interruptus as a means of birth control. Contraception also interferes with procreation, taught in the first commandment of the Torah; â€Å"Be fruitful and multiply†. Furthermore, reformed and liberal Jews allow birth control for a large number of reasons, such a reason may be when the pregnancy may in anyway harm the carrier of the baby. However, Orthodox Jews are more restrictive and believe that contraception shouldn’t be used for selfish reasons or to completely avoid having children. Through this sexual ethical teaching, Judaism has been able to maintain a framework by which it can remain in a righteous and unwavering state. Sexually ethical conduct is fundamental to the stability and morality of Judaism as it provides guidelines to the correct way to treat marriage and the fact that it is disrespectful to defy the belief in love and marriage. In additions to this, acts that defy love are considered insolent and go against the moral framework that guides Judaism. Judaism believes in the importance of marriage in the development and completeness of the human being and that a person must take responsibility for the partner and relationships must continue. Thus, Judaism doesn’t permit sexual relations between partners prior to marriage, as a sexual act itself is such a powerful force in defining a relationship. A sexual failure can destroy a relationship despite prior declarations of love. The only way to ensure that there will be some degree of responsibility after sex through the act of marriage. In the Torah, the word used for sex means â€Å"to know†, which indicates that Jews believed sex involved the heart and mind as well as the body. The divine idea that a man and woman are to become â€Å"one flesh† (Gen 2:24), indicated sacred elements presents, the sexual act symbolising the union of those created in God’s image. Thus, all strains of Judaism view sex as permissible only within the sanctity of marriage. This view enables Judaism to remain honest and secure because of the framework that they follow. To conclude, Sexual Ethics are vital to Judaism because they provided direct guidance on how to behave morally and in accordance with the Torah and God. Sexual ethics as demonstrated and described in the Torah include Adultery, Homosexuality, Contraception and Pre-marital sex. Each of these plays a pivotal role in providing a framework for the conduct that Jews must follow to ensure that the tradition may continue in stability and morality.