How Online Product Reviews Affect Retail Sales: A Meta-analysis

A growing body of research has emerged on online product reviews and their ability to elicit performance outcomes desired by retailers; yet, a common understanding of the performance implications of online product reviews has eluded us. Scholars continue to navigate an array of studies assessing different design elements of online product reviews, and various research settings and data sources. We undertake a meta-analysis of 26 empirical studies yielding 443 sales elasticities to examine how these variables relate to retail sales. Building on well-established meta-analytical methods, we address the following questions: How does review valence influence the elasticity of retailer sales? What about review volume? For which product types and usage situations do online product reviews have a greater impact on retailer sales elasticity? Which types of online reviewers and websites exert the greatest influence on retailer sales elasticity? Our study answers these important questions and provides a much needed quantitative synthesis of this burgeoning stream of research.     

一种多信道的分簇式短波令牌协议

传统的短波令牌协议（HFTP）调度方式单一,在没有数据传送时,信道资源会被各节点间的令牌传递所占用,且令牌在通信质量较差时易丢失。基于此,提出一种多信道的分簇式短波令牌协议（CHFTP）,通过以通信质量评估为标准的分簇算法和基于预约的动态令牌调度,减小了令牌丢失的概率和令牌传递、处理的开销,并给出了仿真分析。仿真结果表明,该协议的端到端平均时延和网络吞吐量明显优于短波令牌协议,CHFTP的平均时延最多可减少75%,网络吞吐量最多可增加66.7%,适合在短波通信网络中使用。     

农村学校布局调整政策中地方政府行为动机分析

城镇化加速带来的人口聚集程度以及城乡教育事业发展水平的明显差异,对以往依据行政区划对农村教育资源进行布局的方式提出了新的挑战。2001年起实施的以 “适当合并”、“整合资源”为主要施政意图的农村小学 “布局调整”政策,却在实际执行中引发了优质教育资源在城镇 “过度集中”的新问题,由此引起了农村地区所面临的种种农村内部和城乡之间,因资源配置不均衡而导致的 “不公平”现象的讨论。该文以上述基础教育资源布局调整政策为背景,首先运用统计数据和实地调研相关案例,描述了自 2001年政策实施以来,城乡学校以及校均学生数量的变化、农村地区的 “点校”运转状况以及地方财政资金在城乡学校之间基础建设上的分配情况;并通过建立全国30个省1998~2010年农村小学学校数量变化影响因素的面板模型,对地方政府撤并农村小学的行为动机进行了验证,结果证实了 “效率优先”的行为动机。文章在最后分析了这种以通过 “学校进城”迫使学生进城,推动城镇化的效率导向,是源自利益相关者的缺位,另一方面也提出了从根本上解决城乡基础教育资源配置问题的思路与进一步研究的方向。     

Last dance or second chance? Firm performance,CEO career horizon,and the separation of board leadership roles

In recent years, many firms have chosen to separate their CEO and board chair positions. Prior research has demonstrated that there are three forms that a CEO–board chair separation can take: apprentice, departure, and demotion. In this paper, we examine the antecedents of these three types. Our results show that the three types of separation each have different profiles in terms of the prior performance of the firm, the independence of the board, and the career horizon of the incumbent CEO. The findings in this paper provide unique insights into the factors that drive boards' structural choices. As questions about board leadership structure become more nuanced and more relevant in both scholarship and practice, a full understanding of these factors will only become more important. Copyright © 2013 John Wiley & Sons, Ltd.     

The Role of Nonattenuated Rights in Positive Economics: A Critical Appraisal

This article assesses the institutionalist elements of Friedrich Hayek's neoliberal political economy by presenting his views on the entangled relations between the state and markets in capitalism. Through the analysis of Hayek's work, the article contributes to further consolidating the view that neoliberalism is an ideological project of institutional transformation which, despite some enduring myths, has an irreplaceable role for a state with many important functions in a more limited democracy. Markets, for their part, are politically contested social constructions that depend on previous non-market institutions for their existence and legitimation. This paper argues that Hayek's work corroborates this institutionalist claim.     

A Framework for Reconsidering the Lake Wobegon Effect

The Lake Wobegon Effect (LWE) describes the potential measurement-error bias introduced into survey-based analyses of education issues. Although this effect potentially applies to any student-report variable, the systematic overreporting of academic achievements such as grade point average is often of preeminent concern. This concern can be easily circumvented if official records data are available; however, many researchers can only access student-reported data. In this article, the authors examine whether using student-survey data in place of official records data meaningfully biases regression estimates. They motivate their contribution by noting a useful statistical feature of overreporting on bounded variables such as grade point average. Specifically, the misreports will be negatively correlated with the true grade point average, yielding a form of nonclassical measurement error that actually counteracts the bias. The authors connect this observation to reliability ratios used in labor economics, which are simple ways to adjust for attenuation bias, when needed. In two applications, we find that it is unnecessary to correct for the LWE bias because it is so small.     

What Influences Trader Choice of Electronic versus Intermediated Execution?

We examine the determinants of US equity trader choice of electronic versus intermediated execution. While traders exhibit a strong overall preference for automation, when the market is less liquid at order submission time, traders seek market maker automated and human order‐matching services more often. Traders' overall tendency to choose intermediaries is highly correlated with their demand for liquidity. Market maker participation rates are higher for more active and larger size traders. Traders who choose intermediaries more often trade more stocks, execute orders quicker, price orders more aggressively, and disperse their trading over longer periods of time. Although US stock intermediaries continue to lose market share, our results highlight the important role these firms can play in an increasingly automated, electronically driven marketplace.     

The Taiwanese love motel - An escape from leisure constraints?

The paper reports research derived from over 800 respondents who self-completed questionnaires while patronising love motels in the Taipei greater metropolitan region, Taiwan. The paper provides a brief history of Taiwanese love motels and distinguishes them from western massage parlours. Five clusters are found that are based on two primary canonical discriminate functions that explain 83 percent of the variance - the dimensions being sexual conventionality-adventurousness and comfort seeking. These dimensions are wholly consistent with the basic premise of the love motels, although additionally privacy for intimate relationships is also important. The survey questionnaire was based on a concept of physical and relationship constraints on leisure, and generally it was found that the ‘push’ factors based on a need to escape these constraints was weaker than the ‘pull’ factors of comfort and privacy.     

巴黎碰碰车

巴黎不喜欢我我也不喜欢巴黎。可能一般女生会不太了解这样一个浪漫的城市，基本上没多少人拥有抵抗力就连我自己也没想过自己如此热爱旅行竟然对巴黎下这样的一个定论。我寻遍以往的旧照发现原来我不曾为这个城市留下任何令我心动的照片，当然更别有巴黎汽车的照片先在此跟读者们道个歉。我搜索桔肠费杀思量，想着想着巴黎也不曾暖给我一个美好印象；