Quality Competition and Social Welfare in Markets with Partial Coverage: New Results*

We use a vertical product differentiation model under partial market coverage to study the social welfare optimum and duopoly equilibrium when convex costs of quality provision are either fixed or variable in terms of production. We show the following new results. First, under fixed costs, the social planner charges a uniform price for the single variant that just covers costs of quality provision. Like the duopoly equilibrium, this socially optimal pricing entails a partially uncovered market, but a smaller share of the market is served compared with the duopoly equilibrium. Second, for the variable cost case, it is socially optimal to provide both high‐ and low‐quality variants, but market shares need not be equal. This differs from the result in fully covered markets. Third, in the duopoly equilibrium, the quality spread is too wide under variable costs relative to the social optimum. Under fixed costs, the duopoly produces two variants, but quality is too low relative to the social optimum, which has only one variant.     

构建农村和谐社会的思考

构建农村和谐社会,应当树立正确的农民增收观,促进农民持续快速增收,缩小城乡差别;加快农地产权制度改革,解决农地矛盾和纠纷;加快农村基层组织制度和县乡行政改革,解决农村干群矛盾;加快农村教育发展,改进农村教育质量,提高农民素质;加大再造秀美山川工程监管力度,消除工作中存在的不实、不公等因素;加快农村社会保障制度建设,消除农民的后顾之忧.     

A new continuous distribution and two new families of distributions based on the exponential

Recent work on social status led to derivation of a new continuous distribution based on the exponential. The new variate, termed the ring(2)-exponential, in turn leads to derivation of two closely related new families of continuous distributions, the mirror-exponential and the ring-exponential. Both the standard exponential and the ring(2)-exponential are special cases of both the new families. In this paper, we first focus on the ring(2)-exponential, describing its derivation and examining its properties, and next introduce the two new families, describing their derivation and initiating exploration of their properties. The mirror-exponential arises naturally in the study of status; the ring-exponential arises from the mathematical structure of the ring(2)-exponential. Both have the potential for broad application in diverse contexts across science and engineering. Within sociobehavioral contexts, the new mirror-exponential may have application to the problem of approximating the form and inequality of the wage distribution.     

质量心理学引论

文章从顾客满意的质量观，心理因素对质量形成、交换和消费全过程的作用，人们对质量的认知心理以及心理学在质量管理中的应用等多个角度，探讨了质量与心理学的关系，提出了建立新的质量心理学的课题。     

SA8000与人本经济

本文深入探讨了SA8000的产生背景、思想本质及其科学性和局限性，通过与我国科学发展观的比较分析，澄清了目前我国对SA8000的误解和偏见。同时进一步指出，科学的发展观要求我国企业不仅应自觉满足SA8000的要求，而且应承担更广泛的社会责任。     

人格测验在人事测评中的应用

文章强调了人格测验在人事测评中的必要性,在此基础上介绍了四种经典人格测验和三种管理情境中的人格测验,分析了人格测验在预测个体未来工作表现、工作风格以及实现人岗匹配方面所发挥的作用。     

住房差异与居民社会公平感——基于社会阶层视角

依据2017年中国综合社会调查数据,运用有序概率模型,考量住房差异对居民社会公平感的影响及作用机理。结果显示：较少住房面积和无住房产权负向影响居民社会公平感;较多住房面积和拥有住房产权正向影响居民社会公平感;一套住房产权比多套住房产权更能促进居民社会公平感的提升。社会阶层认同和社会阶层预期在较少住房面积和无住房产权群体中表现出正向调节作用;在较多住房面积和拥有住房产权群体中表现出中介作用。住房差异在社会阶层上向流动时正向影响居民社会公平感。鉴于此,应保障住房权利,强化社会阶层预期,提高居民社会公平感。     

社会资本理论综述

社会资本概念首先是由布迪厄明确进行界定的,在此之后,科尔曼对社会资本理论进行了系统研究,而把它全面引入经济和政治研究领域并得到广泛关注则是由普特南实现的。本文对社会资本的各种主要概念和主要测量方法进行综述,并专门引述了有关专家对社会资本的中西方差异的阐释。     

新形势下开拓和发展农村市场的思考

当前,内需不足尤其是农村市场启而未动已成为我国经济持续快速增长的主要制约因素.文章在分析了我国市场机制形成过程中农村市场的现状、问题的基础上,提出了开拓和发展农村市场、促进农村经济社会发展的对策建议.     

发展旅游业--新疆社会经济发展的必然选择

旅游是一种具有重大经济与文化意义的活动,它的产生和发展紧随社会前进的步伐。近年来,随着人们收入的增长和消费水平的提高,节假日外出旅游成为时尚。目前,旅游业是我国的重要产业。在我国的很多地区,旅游业已成为增加经济收入、改善产业结构、提高人们的现代意识、推动区域经济和社会进步的重要产业。新疆地区少数民族众多、地域辽阔,加上历史文化悠久,孕育了丰富的自然旅游资源及人文旅游资源,在全国具有旅游资源的比较优势,因此发展旅游业必将带动新疆地区社会经济的全面发展。