Proposal of literature review of proportional hazards model Research Paper

Proposal of literature review of proportional hazards model - Research Paper Example Most survival modeling examines the relationship between survival and one or several predictors. The survival library in R and S-PLUS also holds all of the other commonly used tools of survival analysis. Below is a brief description of the proportional hazards (Schoenfeld 499). Let z = {x, y †¦} be a vector of 1 or several explanatory variables supposed to affect lifetime. These variables may be incessant, for example, temperature in engineering studies, or dosage level of a given drug in medical tests or better still, they may be indicator variables with the value 1 when a given factor or condition is present (Schoenfeld 500). Let the hazard rate for a nominal set z 0 = (x 0, y0†¦) of the variables be set by h 0 (t), with h0 (t) indicating legitimate hazard function for unspecified life distribution model. In this regard, the proportional hazards model supposes that we can note the modified hazard function for a new value of z as: Given a log-linear model assumption for g (z), and with no additional suppositions concerning the life distribution model, it will be possible to analyze investigational data and figure out utmost likelihood estimates. Additionally, it would be possible to use likelihood ratio tests to decide which explanatory variables will are extremely significant. In this study, a series of trials on treatment of cancer will be conducted. The study will seek to assess the importance of chemotherapy and radiation therapy over radiation therapy alone. The following data from the study group will be used for the purpose of elucidating the effect of chemotherapy and radiation therapy. A total of 80 patients will be treated with radiation therapy alone in the first round, while the same patients will be treated with chemotherapy and radiation therapy. Prognostic factors will be age and whether patients will have necrosis in their surgical

Ethical Issues in Outsourcing and Off-shoring of Jobs in the Essay

Ethical Issues in Outsourcing and Off-shoring of Jobs in the Telecommunication Industry - Essay Example cation industry, a majority of global firms tend to target economically backward or developing countries which enable them to reduce the overall operational cost by availing requisite resources at a much cheaper cost. In this regard, the process of offshoring business operations also facilitates the organizations to obtain resources, especially the manpower, in a lower cost as compared to the economically developed countries. Due to the fiercely growing competition in the global telecommunication industry, organizations often tend to practice outsourcing and off-shoring of their business operations from and to the other under developed or developing countries. In the present day context, it has been apparently observed that the global marketers seek to relocate their business operations in order to attain greater convenience in terms of paying lower wage which can also facilitate the organization to fulfill the expectations of its potential stakeholders in a cost effective and resour ceful way. With regard to the present business strategy in the telecommunication industry, it can be observed that a trend of expansion is highly practiced by the organizations with the aim of accomplishing considerable economic growth and strengthening their global presence in the competitive market scenario (Jaruzelski, Katz & Ribeiro, 2004). While discussing about the current trend of outsourcing and off-shoring in the telecommunication industry, it can be observed as emerging and widely accepted strategies by the modern organizations. This continuous emergence of outsourcing and off-shoring strategies within the global telecommunication industry has been witnessed to be influenced by. For instance, the lower penetration rate of the services in the telecommunication industry is one of... This report makes a conclusion that in accordance with the modern business competitiveness, it has been witnessed that the practice of outsourcing and off-shoring of jobs considerably provides adequate facilities to the telecommunication firms. For instance, it rewards the benefit of reducing operational costs to the organizations by acquiring resources, especially in terms of the potential labor of the firm. Moreover, the trend can also facilitate the telecommunication firms to reduce possible constraints relating to the legal aspects, working regulations as well as social responsibility related guidelines by taking the virtues of globalization. In addition, the outsourcing and off-shoring of jobs in the telecommunication industry can also enable the firms to improve the standard and quality of its services through integrating skilled employees at a lower cost. However, the trend of outsourcing and off-shoring can also create significant ethical issues which may affect the image as well as reputation of the firm. This paper stresses that the nature of outsourcing and off-shoring significantly focuses on replacing workforce of the organization with newly appointing workers from another culture and regional background which can be stated as the major concerning factor which might be termed as a major causing factor for the diminishing financial benefits of the existing employees. Moreover, overlooking prior communication process regarding outsourcing and off-shoring might also be treated as unethical in nature that hinders the career prospects the employees. It is worth mentioning in this context that hindrances in terms of employee dissatisfaction, management complexities and cultural conflicts are few of the most apparent ethical issues witnessed by telecommunication organizations when implementing off-shoring and outsourcing initiatives.