C2C模式下诚信问题的博弈论分析

探讨C2C运营模式,运用博弈论方法对C2C网络交易中两大主体——卖家和买家的交易行为进行分析,从两大主体的成本收益出发,建立两者之间的静态博弈模型和重复博弈模型,以此来解释我国C2C网购中诚信问题频发的原因。原因包括三个方面:现实中买家发现以次充好的概率不高,在C2C模式下特有的伪装成本较低,发现以次充好后卖家获得的惩处不够大。     

Health Insurance Coverage and Access to Care by Sexual Orientation and Marital/Cohabitation Status: New Evidence from the 2015–2018 National Health Interview Survey

Population Research and Policy Review - Disparities in health insurance coverage and access to care are well documented between sexual minority adults and their heterosexual peers. Much less...     

Investigation of Change in Adolescent Perceptions of Mothers' and Fathers' Contributions to Interparental Discord From 7th to 9th Grades

The purpose of the present study was to examine whether adolescent perceptions of mothers' and fathers' contributions to interparental discord changed from early to middle adolescence and if the changes were related to adolescent negative mood. Data were drawn from the National Longitudinal Survey of Youth 1997. Adolescents who were in 7th grade at the Wave 1 assessment and lived with both biological parents during Waves 1–4 were included in this research (n=812; 55% boys; 69% White). Findings indicated that adolescents' perceptions of their mothers' and their fathers' contributions to interparental discord increased at similar rates from early to middle adolescence. The largest increases in adolescent perceptions of mothers' and fathers' contributions to interparental discord from 7th to 9th grades were associated with the largest increases in adolescent negative mood from 7th to 10th grades. Girls' perceptions of their fathers' contributions to interparental relationship problems increased at a steeper rate compared with boys. Findings are discussed in the context of the sensitization hypothesis.     

Supplier Encroachment as an Enhancement or a Hindrance to Nonlinear Pricing

The objective of this study was to extend existing understanding of supplier encroachment to contexts in which there is information asymmetry and the supplier can use nonlinear pricing. Prior research has shown that supplier encroachment can mitigate double marginalization and thus benefit both the supplier and the reseller. However, under symmetric information, this benefit disappears if the supplier can use nonlinear pricing. In our model, the reseller observes the true market size while the supplier knows only the prior distribution, that is, a seemingly ideal setting for implementing mechanism design through nonlinear pricing. We first show that, because encroachment capability enables the supplier to make an ex post output decision, it fundamentally alters the structure of the optimal nonlinear pricing policy. In addition to the usual downward distortion effect, where the reseller may purchase less than the efficient quantity, we also have the possibility for upward distortion. Thus, under asymmetric information and nonlinear pricing, supplier encroachment has two opposing effects. On one hand, the ability to shift sales to the direct channel allows the supplier to reduce information rents with less sacrifice of efficiency; but on the other hand, by introducing the possibility of her own opportunistic behavior, it can result in upward distortion of the quantities sold through the reselling channel, which is a new source of inefficiency. Depending upon the relative efficiency of the reselling channel and the demand distribution, either of these two effects may dominate and the supplier's ability to encroach may either benefit or hurt both the supplier and the reseller.     

Optimal Per‐Use Rentals and Sales of Durable Products and Their Distinct Roles in Price Discrimination

We consider a setting in which consumers experience distinct instances of need for a durable product at random intervals. Each instance of need is associated with a random utility and the consumers are differentiated according to the frequency with which they experience such instances of need. We use our model of consumer utility to characterize the firm's optimal strategy of whether to sell, rent, or do a combination of both in terms of the transaction costs and consumers' usage characteristics. We find that the two modes of operation serve different roles in allowing the firm to price discriminate. While sales allow the firm to discriminate among consumers of different usage frequencies, rentals allow it to discriminate according to consumers' realized valuations. Consequently, even when transaction costs are negligible, it is often optimal for the firm to simultaneously rent and sell its product. In addition, we find that although sales and rentals are substitutes and that the offering of sales weakly increases rental prices, it is possible that the introduction of rentals to a pure selling operation can either increase or decrease the optimal sales prices.     

以应用为导向的"单片机原理及应用"实验教学过程探索

"单片机原理及应用"是自动化专业的核心课程,是一门面向应用的综合性专业课程,要求学生掌握单片机的原理和结构、C语言程序设计,是一门实践性非常强的课.通过增加实验教学的课时和实验内容,将Proteus完成硬件仿真加入实验中;让学生预习实验,增强学生的主观能动性;上实验课的时候,现场给学生演示使用Pro-teus完成硬件原理图的绘制及仿真、Keil软件的编程.通过以上步骤,可以极大地增强实验效果,让学生真正做到"软硬兼通",从而达到培养应用型人才的目的.     

《紫罗兰》栏目设置的现代性意义

“空间建设”是“现代性”概念中最重要的内容,以栏目为架构的叙事空间建设更是时尚期刊的现代性的表征。《紫罗兰》空间经营最明显的特点,在于运用充满张力的栏目设置将花样迭出的时尚专号、不断演进的新文学作品进行巧妙组合,构成了时尚叙事空间。在这一叙事空间中,多元时代各种不同形式的文化内容自然地融为一体,并借助于读者对叙事空间的日常阅读,一方面,理所当然地发挥了编辑内容在现代性价值观念上的意识形态作用,另一方面,作为一份流行于20世纪二三十年代的都市时尚期刊佼佼者,杂志还通过这一空间,叙述并展示了以现代性为特征的上海主体文化。     

词汇的层次地位和词汇研究散论

词汇是汉语组织结构中的一个层次,处于一个重要的位置.词作为一级重要的语言单位,是一个相对自足的实体.词汇内部的构词词汇层和造句词汇层是对词汇的合理分层,构词研究和用词研究都需要在观照句子的前提下进行.词义研究不能望文生义,也不能望句生义,对于"文化词"要尽可能地在词汇的范围内解决问题.     

创新人才培养模式：高校可持续发展的核心与关键

科学发展观的本质内涵就是以人为本,引领经济社会走可持续发展之路,以实现经济社会与人的全面发展。支撑经济社会可持续发展的决定性因素就是可持续发展能力。而评价高校可持续发展能力大小的最终标准就是能否培养出可持续发展的全面发展人才,即可持续发展的人。创建可持续发展的人才培养模式是实现高校可持续发展的核心与关键。     

循环农业发展中的政府作用

建设发展循环型农业,是我国资源约束和环境压力下的必然选择。但由于政府在经济发展中不适当的角色定位、传统农业生产的外部性和路径依赖问题以及当前缺乏配套的政策法律制度体系,使循环农业单依靠市场经济的力量很难发展壮大。由此,本文提出政府通过准确定位职能、建设激励约束机制、进行财税金融政策扶持,将有效推动循环农业发展。