研究生导师队伍建设的重要环节——学术论文量化评估

本文从研究生导师队伍科研成果的结构入手 ,认为对导师科研工作评估重点应是对学术论文的量化 ,并提出学术论文量化评估的指标设置、权重系数及其数学模型。     

Summary of the Workshop on Issues in Risk Assessment: Quantitative Methods for Developmental Toxicology

This report summarizes the proceedings of a conference on quantitative methods for assessing the risks of developmental toxicants. The conference was planned by a subcommittee of the National Research Council's Committee on Risk Assessment Methodology ⁴ in conjunction with staff from several federal agencies, including the U.S. Environmental Protection Agency, U.S. Food and Drug Administration, U.S. Consumer Products Safety Commission, and Health and Welfare Canada. Issues discussed at the workshop included computerized techniques for hazard identification, use of human and animal data for defining risks in a clinical setting, relationships between end points in developmental toxicity testing, reference dose calculations for developmental toxicology, analysis of quantitative dose-response data, mechanisms of developmental toxicity, physiologically based pharmacokinetic models, and structure-activity relationships. Although a formal consensus was not sought, many participants favored the evolution of quantitative techniques for developmental toxicology risk assessment, including the replacement of lowest observed adverse effect levels (LOAELs) and no observed adverse effect levels (NOAELs) with the benchmark dose methodology.     

胸腺素含量的ELISA测定法

用胸腺素免疫新西兰免,获得抗胸腺素抗体,建立了胸腺素ELISA定量测定法．该法检测灵敏度为3．2ng/ml,测定范围3．2～50000ng/ml,批内和批间变异系数分别为4．4％和8．9％,方法特异性鉴定显示与另外七种激素无明显交叉反应．     

The efficacy of using judgmental versus quantitative forecasting methods in practice

In an era where forecasts drive entire supply chains forecasting is seen as an increasingly critical organizational capability. However, business forecasting continues to rely on judgmental methods despite large advancements in information technology and quantitative method capability, prompting calls for research to help understand the reasons behind this practice. Our study is designed to contribute to this knowledge by profiling differences between firms identified as primary users of either judgmental or quantitative forecasting methods. Relying on survey data from 240 firms we statistically analyzed differences between these categories of users based on a range of organizational and forecasting issues. Our study finds large differences in forecast error rates between the two groups, with users of quantitative methods significantly outperforming users of judgmental methods. The former are found to be equally prevalent regardless of industry, firm size, and product positioning strategy, documenting the benefits of quantitative method use in a variety of settings. By contrast, the latter are found to have significantly lower access to quantifiable data and to use information and technology to a lesser degree.     

Quality and Reliability in Top-event Estimation: Quantitative Fault Tree Analysis in Case of Dependent Events

This article deals with the quantitative Fault Tree Analysis (FTA) and the estimation method of the top-event in case of dependent events. It aims at addressing two main issues: (1) the decomposition of variability for the top-event according to several error components linked to the estimation of the top-event and sources of internal and external variations for a complex system; and (2) the definition of a Performance Measure Independent of Adjustment in order to set the quality of the top-event as a complex measure of the system failure. A simulated study applied to the health system is also carried out.     

Sexual Beliefs and Sexual Functioning: The Mediating Role of Cognitive Distraction

Dysfunctional sexual beliefs are vulnerability factors for sexual dysfunction. This cross-sectional study aimed to test the mediating role of cognitive distraction on the relationship between dysfunctional sexual beliefs about sexual functioning shared by men and women and sexual function. The authors used a sample of 421 cisgender heterosexual participants involved in a monogamous relationship. The hypothesized mediation model was tested using a bootstrapped cross product of coefficients approach. Results showed a significant negative, indirect effect between dysfunctional sexual beliefs and women's sexual function through cognitive distraction. The discussion of this study highlights the importance of cognitive factors in sexual functioning.     

近三十年藏戏研究的发展脉络与趋势——基于计量可视化分析

藏戏被誉为藏文化“活化石”,分别于2006年和2009年被列入国家和世界非物质文化遗产目录。近年来,随着国家大力提倡非物质文化遗产保护和优秀中华文化“走出去”,藏戏研究也日益成为学界关注热点。为了厘清藏戏研究现状,研究热点与趋势,本研究通过CiteSpace与VOSviewer两个主流计量可视化分析软件对国内近三十年藏戏研究成果进行较为详尽的分析,以期为进一步推动藏戏创新研究提供基础数据支撑。直观的可视化分析结果表明：目前藏戏研究处于缓慢发展阶段,但研究内容逐渐向多元化、跨学科方向发展。藏戏研究的核心作者和机构较少,且合作关系不明显。如何服务公共文化体系和非物质文化遗产的传承是目前藏戏研究最新主题。藏戏内涵的丰富性,未来势必会吸引更多学科专家从不同视角对藏戏的传承和保护进行研究。     

A robust QTL mapping procedure

In quantitative trait linkage studies using experimental crosses, the conventional normal location-shift model or other parameterizations may be unnecessarily restrictive. We generalize the mapping problem to a genuine nonparametric setup and provide a robust estimation procedure for the situation where the underlying phenotype distributions are completely unspecified. Classical Wilcoxon–Mann–Whitney statistics are employed for point and interval estimation of QTL positions and effects.     

作为科学思考的社会学

早在社会学诞生之初,其创始人孔德就将社会学确定为一门关于"社会的科学",称社会学为"实证的哲学".由于科学自身以及科学研究方法存在的局限性,这也意味着作为科学的社会学一系列问题的开始.正因如此,对于社会学的科学性含义,社会学实证方法的重要性,定量研究对于社会学理论发展的基础性意义等,有必要作进一步探讨.     

MA and doctoral public relations research in Turkey (1984–2007): A quantitative study of dissertations contribution to public relations field

In this article, MA and doctoral dissertations (673) on public relations written at Turkish universities (1984–2007) are examined in order to gain an understanding of the level of the theses within the discipline and that subjects are studied, too. The conclusion is that their contribution to public relations’ improvement and especially theory building has been negligible. Written theses are standing out the practical or operational, and no existence any dissertations related to public relations theory.