Inference Under Right Censoring in a Discrete Setup

In this article, we consider the right random censoring scheme in a discrete setup when the lifetime and censoring variables are independent and have geometric distributions with means 1/θ₁ and 1/θ₂, respectively. We first obtain the Maximum Likelihood and Method of Moment estimators of the unknown parameters. We also find the Bayes and Posterior Regret Gamma Minimax estimators of the parameters for the two cases when the prior distributions are dependent and independent, assuming a squared error loss function. We then discuss the Proportional Hazard model, and obtain Maximum Likelihood estimators of the unknown parameters and derive the Bayes estimators assuming squared error loss using Markov Chain Monte Carlo methods.     

大学生篮球裁判员执法心理压力之分析

运用文献资料法、问卷调查法对大学生篮球裁判员执法时心理压力进行分析,结果显示出不同年级学生在非暴力和暴力因素压力应激源下之差异。     

论19世纪末年的社会心态

自戊戌变法后期清朝政府守旧派掌控朝政始的19世纪末年,趋新的社会风气转为沉闷;特别是义和团运动时期,守旧派将其仇新、排外的情绪推向极至,直接导引了普通民众的冷漠与无知、新式知识分子的压抑与彷徨心态。     

论秀水派

秀水派受乾嘉文化精神的影响,有着自觉的创变意识。通过辨析秀水诗人的科举仕履、学术水平、人格个性,可以窥测其"期于立言"与"游离仕途"的文化心态,从而摒弃成见,进一步体认形成秀水诗派创作内容与诗艺追求特点的内在原因,把握其独至之处,进而获得对秀水派比较中肯的认识。     

关于贵州农村精神文明建设问题的思考

在社会主义发展的今天，贵州省农村的建设，在大力发展物质文明的同时，更应注意精神文明建设问题。本文从认识农村精神文明建设的意义等方面着手，剖析了精神文明建设对贵州农村地区建设和发展的推动作用，对于提高贵州农民的整体素质，建立行之有效的农民职业技术培训体系提出了意见和建议，同时也阐明了共产党员在贵州农村精神文明建设中所发挥的特殊作用。     

浅析我国社会转型时期仇富心态

我国社会转型以来,由于各种原因一些人产生了仇富心态.这种仇富心态如果得不到及时疏导和排解,发展到一定程度会危害社会安定,不利于我国社会主义和谐社会的构建.要充分认识仇富心态的现实表现及影响,探寻消除仇富心态的方法,为我国全面建设小康社会提供一个安定的社会和心理环境.     

A Parallel between Regret Theory and Outranking Methods for Multicriteria Decision Making Under Imprecise Information

Incorporation of the behavioral issues of the decision maker (DM) is among the aspects that each Multicriteria Decision Making (MCDM) method implicitly or explicitly takes into account. As postulated by regret theory, the feelings of regret and rejoice are among the behavioral issues associated with the entire decision making process. Within the context of MCDM, the DM may feel regret, when the chosen alternative is compared with another one having at least one better criterion value. PROMETHEE II is a widely known MCDM method that makes no explicit incorporation of regret attitude of the DM. In this paper, we elaborate on the applicability of regret theory to MCDM context. In particular, we investigate the findings of regret theory and explore the parallel between regret theory and PROMETHEE II method. Relying on the concepts of regret theory, we demonstrate how a decision that is made using a PROMETHEE II based outranking method conforms to the regret attitude of the DM.     

Dynamic Pricing to Minimize Maximum Regret

We consider a dynamic pricing problem that involves selling a given inventory of a single product over a short, two‐period selling season. There is insufficient time to replenish inventory during this season, hence sales are made entirely from inventory. The demand for the product is a stochastic, nonincreasing function of price. We assume interval uncertainty for demand, that is, knowledge of upper and lower bounds but not a probability distribution, with no correlation between the two periods. We minimize the maximum total regret over the two periods that results from the pricing decisions. We consider a dynamic model where the decision maker chooses the price for each period contingent on the remaining inventory at the beginning of the period, and a static model where the decision maker chooses the prices for both periods at the beginning of the first period. Both models can be solved by a polynomial time algorithm that solves systems of linear inequalities. Our computational study demonstrates that the prices generated by both our models are insensitive to errors in estimating the demand intervals. Our dynamic model outperforms our static model and two classical approaches that do not use demand probability distributions, when evaluated by maximum regret, average relative regret, variability, and risk measures. Further, our dynamic model generates a total expected revenue which closely approximates that of a maximum expected revenue approach which requires demand probability distributions.     

中希神话英雄寻异

英雄神话是各民族早期文学中共有的内容,神话英雄却风采各异。本文简析了中国与希腊神话英雄在某些方面的差异及形成的原因。     

论唐代的《行路难》

唐代是诗歌发展的繁荣期 ,其间众体兼备 ,成就非凡。通过对唐代《行路难》诗题的归纳整理 ,考察其对前代诗歌的继承和发展 ,并试图揭示出唐代知识分子在《行路难》中展现出来的矛盾心绪及其表现方式