Simulated Distribution of the Kullback-Leibler Information Measure

This paper provides the percentiles obtained by simulation of an informational test statistic. It gives evidence that the widely used chi-square approximation to this test statistic is not suitable.     

“Serials at Warp Speed: Navigating Transitions,” the 2007 North Carolina Serials Conference

Abstract

Reports on four major serials conferences, the 2007 North Carolina Serials Conference, the 2007 meeting of the Ohio Valley Group of Technical Services Librarians, the Canadian Library Association’s 2007 Pre-Conference, and the 2007 North American Serials Interest Group Conference.     

Cointegration Detection Using Dynamic Factor Models

A method of information-criterion-based cointegration detection using dynamic factor models is proposed. The results of the data-based and non data-based Monte Carlo simulations suggest that this method is as effective as conventional hypothesis-testing methods. In the proposed method, an observed multivariate time series is described in terms of common stochastic trends plus stationary autoregressive cycles. Then the best model is selected from among alternative models obtained by changing the number of common stochastic trends, on the basis of information criteria. Consequently, the cointegration rank is determined on the basis of the selected model. Two advantages of the proposed method are also discussed.     

Sustainable consumption and third-party certification labels: Consumers’ perceptions and reactions

Compared with conventional products, sustainable products continue to attract relatively lower market shares. To increase customer acceptance, many sustainable products feature third-party certification labels (TPCL), yet it is unclear whether TPCL are effective and what processes and boundary conditions define their role in consumer decision making. Across three experimental studies, this research determines that sustainable products are characterized by credence qualities, associated with increased perceptions of risk, which negatively influence consumers' purchase intentions. Drawing on signaling theory, this study also shows that TPCL on sustainable products provide brand-like information cues that reduce the perceived risk of sustainable products. Finally, a third experimental study demonstrates that consumers must perceive TPCL as credible for them to reduce consumers’ risk perceptions.     

Information search,coherence effects,and their interplay in legal decision making

Legal judgments require one to make sense of a complex set of typically contradicting pieces of information that can easily be interpreted in a biased manner. This systematic judgment bias can be caused by biased information search (i.e., confirmatory search) as well as biased information processing (i.e., coherence effects) in which the interpretation of information is changed to fit the emerging favored option. In four studies, we investigate the complex interplay between both kinds of influences. Participants completed three legal cases in which they could freely search for information. We manipulated between subjects whether systematic search was possible or not and measured the assessment of each selected piece of information. In line with previous studies, we observe strong coherence effects in each study, in that the evidence interpretation strongly depended on the current tendency towards acquittal or conviction. In contrast to our expectation, however, people searched for information that was contrary to their current belief in the given case (i.e., disconfirmatory information search). We also observed a trend towards an interaction between both factors, in that coherence effects were slightly stronger for neutral and pro-guilty evidence when systematic information search was possible. Our results underline an unconscious striving for coherence when making complex judgments that is not easily corrected.     

Consolidation and fragmentation in environmental scanning: A review and research agenda

Environmental scanning is a broadly defined concept, having first received attention from scholars in the late 1960s. Over the years a number of similar and overlapping constructs have emerged in management literature. The aim of this study, via a systematic review and thematic analysis of relevant empirical research, is to consolidate foundation environmental scanning knowledge, demonstrate how scanning research has developed and fragmented over time, and propose an agenda for future research. The first contribution of our review is a new typology of environmental scanning research made up of five discrete research views, which provides a more comprehensive and contemporary overview of the field than previous studies. The second is a proposed agenda for future research that explicitly acknowledges the role of technology, an area that is presently underdeveloped in foundation scanning literature. The third contribution is to signpost future directions for research on scanning and organisational performance using a number of theoretical perspectives. The overall outcome of our review is to move scanning research on from increasingly incremental contributions concerned with context to a place where the changing role of technology and the mechanisms through which environmental scanning contributes to competitive advantage can be more thoroughly understood.     

Revisiting Nested Group Testing Procedures: New Results,Comparisons, and Robustness

Group testing has its origin in the identification of syphilis in the U.S. army during World War II. Much of the theoretical framework of group testing was developed starting in the late 1950s, with continued work into the 1990s. Recently, with the advent of new laboratory and genetic technologies, there has been an increasing interest in group testing designs for cost saving purposes. In this article, we compare different nested designs, including Dorfman, Sterrett and an optimal nested procedure obtained through dynamic programming. To elucidate these comparisons, we develop closed-form expressions for the optimal Sterrett procedure and provide a concise review of the prior literature for other commonly used procedures. We consider designs where the prevalence of disease is known as well as investigate the robustness of these procedures, when it is incorrectly assumed. This article provides a technical presentation that will be of interest to researchers as well as from a pedagogical perspective. Supplementary material for this article is available online.     

社会化电子商务中卖家与非卖家信息分享行为差异

  目前社会化电子商务对用户分享行为的激励措施单一，缺乏吸引力，急需个性化的、有针对性的激励方式。社会化电子商务网站上，除了普通用户分享产品和购物信息外，一些电子商务卖家也分享产品相关信息以吸引消费者，拥有不同身份属性的用户被不同因素所激励。因此，为了设计个性化的激励方式，社会化电子商务平台需要进一步了解激励用户信息分享行为的关键因素的影响强度是否随着卖家与非卖家身份属性的不同而有所差异。         基于社会认知理论提出影响用户分享行为的关键因素，包括预期个人结果、预期社区结果和自我效能。采用目标理论，认为卖家为自我卷入型用户，非卖家为任务卷入型用户，并对卖家和非卖家不同身份用户的信息分享行为影响因素的差异建立理论研究模型。采用问卷调查法收集1 177位社会化电子商务用户的信息分享意愿及其影响因素的相关数据，运用Spss 19.0进行测量模型和t检验分析，以验证假设。         研究结果表明，结果期望和自我效能对信息分享意愿的影响强度在卖家与非卖家之间有显著的差异，卖家的分享意愿更多地受到预期个人结果和自我效能的影响，非卖家的分享意愿受到预期社区结果的影响。         研究结果拓展了社会化电子商务领域关于信息分享行为的相关研究，为后续研究提供了可能性。建议电子商务网站运营者在制定和实施激励计划时，应充分考虑用户的不同身份属性，有针对性地提供激励，以最大化地鼓励用户参与，保障网站健康发展。     

浅谈现代汉语与英语中双宾语结构构成的异同

双宾语在现代汉语中占据着一个非常重要的地位,比较现代汉语和英语中双宾语结构构成的异同,有助于我们更好地学习并利用现代汉语中的双宾语结构,也有助于理解和学习英语中的双宾语结构。本文先后探讨了现代汉语和英语中双宾语在结构上、动词、直接宾语、间接宾语方面的异同,对我们更好地学习和运用现代汉语中的双宾语有一定的帮助。     

四川省甘孜州、阿坝州城镇女性从业者的就业结构与驱动因素探究——基于全国第四次经济普查四川省数据的分析

就业是民生之基,是社会稳定之本,也是女性劳动者的基本权利、提高女性自身经济地位的重要手段,更是性别平等的测试器。在四川省甘孜州、阿坝州,城镇女性从业者在教育、卫生等行业有较高从业优势,就业集中分布于公共管理、教育、卫生、文化等领域,在零售、餐饮、住宿等市场化行业的集中度不明显;产业结构、城镇化与乡城劳动力转移、民营经济发展水平、城镇女性人力资本以及择业观念等影响城镇女性的行业就业行为;传统服务业与线上业态、旅游相关产业、生态红利产业、农业产业链延伸产业等是未来城镇女性劳动力的就业拓展领域;提升女性人力资本有助于女性从业者的就业结构优化。