契丹世家大族的家庭教育——基于出土的辽代碑刻资料

辽朝契丹世家大族为了保护其政治地位与经济利益,有效地强化国家政权统治培养后备人才,十分重视家庭教育。基于教育研究视角,挖掘有限的文献资料,充分利用出土的碑刻资料,就辽代契丹世家大族重视家庭教育、家庭教育对象、家庭教育内容、家庭教育形式与教材、家庭教育的特点、作用与影响等问题进行深入探讨。契丹世家大族家庭教育的内容与一些方法有启示作用,但也存在调教不得法、偏爱、溺爱等现象,应该引以为戒。     

Prevalence of Problem Gambling Among Adolescents: A Comparison Across Modes of Access,Gambling Activities,and Levels of Severity

The high availability and accessibility of online gambling have recently caused public concern regarding the potential increase of gambling-related problems among young people. Nonetheless, few studies among adults and none among adolescents have explored specific characteristics of gamblers as a function of gambling venues to date. This study sought to analyze the prevalence of gambling among a sample of adolescents in the last year, as well as sociodemographic and gambling-related characteristics as possible predictors of at-risk and problem gambling. The sample comprised 1313 adolescents aged 14–18 years. Participants were asked to respond to several questions regarding their gambling behavior. Chi square and ANOVA tests were performed in order to explore differences between groups, and a set of multinomial regressions established significant severity predictors. The prevalence of at-risk and problem gambling was 4 and 1.2 %, respectively. Regression analyses showed that having a relative with gambling problems predicted at-risk gambling. Both living with only one parent or not living with parents at all, and the prevalence of Electronic Gambling Machines in the last year were associated with problem gambling. Mixed-mode gambling was a predictor of both at-risk and problem gambling. Our findings extend previous research on gambling among adolescents by exploring gambling behavior according to different modes of access. Although the prevalence of exclusive online gambling among the total sample was low, these results support the need to consider specific subgroups of gamblers and their concrete related features when conducting both indicated prevention and treatment protocols for adolescents.     

Robust rank screening for ultrahigh dimensional discriminant analysis

In this paper, we consider sure independence feature screening for ultrahigh dimensional discriminant analysis. We propose a new method named robust rank screening based on the conditional expectation of the rank of predictor’s samples. We also establish the sure screening property for the proposed procedure under simple assumptions. The new procedure has some additional desirable characters. First, it is robust against heavy-tailed distributions, potential outliers and the sample shortage for some categories. Second, it is model-free without any specification of a regression model and directly applicable to the situation with many categories. Third, it is simple in theoretical derivation due to the boundedness of the resulting statistics. Forth, it is relatively inexpensive in computational cost because of the simple structure of the screening index. Monte Carlo simulations and real data examples are used to demonstrate the finite sample performance.     

Diversification and internationalization in the sociological study of science and religion

Classical sociology addressed the relationship between science and religion, but interest in the topic waned during the 20th century. A second wave of research has emerged in the 21st century, focusing on scientists' (ir)religiosity, evolution, and the relationship between knowledge and acceptance of scientific concepts. Most of this research has been conducted in the United States, used quantitative methods, and focused on creationism, although scholars have recently begun to explore different research methods and sites. Their results suggest that the “conflict thesis” is not valid and that publics and scientists' views tend to be fluid and strongly shaped by national context. The literature on nonreligion has also expanded, but its connection to science remains ripe for further development. A more intersectional approach would also benefit the field, as would increased engagement between public understanding of science scholars and sociologists studying science and religion. Research in both areas is showing that attitudes toward science and religion cannot be understood solely in terms of knowledge about either domain. There is scope for more empirical and theoretical work internationally eschewing the assumption that science and religion conflict and focusing more on identity, culture, and power relations.     

Fractional Brownian motion and long term clinical trial recruitment

Prediction of recruitment in clinical trials has been a challenging task. Many methods have been studied, including models based on Poisson process and its large sample approximation by Brownian motion (BM); however, when the independent incremental structure is violated for BM model, we could use fractional Brownian motion to model and approximate the underlying Poisson processes with random rates. In this paper, fractional Brownian motion (FBM) is considered for such conditions and compared to BM model with illustrated examples from different trials and simulations.     

Lights and shadows on sustainability rating scoring

Many organizations currently publish sustainability ratings that quantify the sustainability of firms by aggregating scores. These organizations analyze companies in economic, social, environmental and corporate governance terms. However, some of these scores are associated with problems of how positive and negative assessments are offset. This work proposes a methodology for using fuzzy logic in the design of a comprehensive sustainability rating for firms. This technique for measuring sustainability addresses the complexity of the concept and enables the incorporation of expert knowledge into the system of assessment. This approach is applied to organizational information taken from the 2008 Accountability Rating and corrects one of the weaknesses revealed by methodologies based on the aggregation of scores—the offset effect—enabling decision-maker to manage it. This is considered an important research topic because of the growth of social responsible financial markets, and the fact that investors are demanding more accurate information.     

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.     

Supply Chain Design and Carbon Penalty: Monopoly vs. Monopolistic Competition

This paper studies whether imposing carbon costs changes the supply chain structure and social welfare. We explore the problem from a central policymaker's perspective who wants to maximize social welfare. We consider two stakeholders, retailers, and consumers, who optimize their own objectives (i.e., profits and net utility) and three competitive settings (i.e., monopoly, monopolistic competition with symmetric market share, and monopolistic competition with asymmetric market share). For the monopoly case, we find that when the retailer's profit is high, imposing some carbon emission charges on the retailer and the consumers does not substantially change the supply chain structure or the social welfare. However, when the retailer's profit is low, imposing carbon costs optimally can lead to a significant increase in social welfare. Moreover, the impact of imposing carbon emission charges becomes more significant when the degree of competition increases. Additionally, the quantum of benefit may depend only on factors common across industries, such as fuel and carbon costs.     

女性领导力研究综述

在女性领导者迅速崛起的时代背景下,对女性领导力的研究尚未呈现出相应的勃发之姿。通过全面考察我国与国外女性领导力研究文献,发现国内外研究成果各有所长,其研究核心都指向对女性领导力发展障碍的关注。透析女性领导力的发展障碍,探索女性领导力的成长路径,在理论层面上是对女性研究的拓展和领导力研究领域的丰富,在实践层面上有助于发掘女性人力资源潜质,实现女性领导力效用最大化,营造和谐平等的性别文明。     

构建高校培养大学生创业能力的基本框架

目前我国高校的创业教育取得了初步成效,但在大学生创业能力培养方面还存在着不少问题,使得多数学生想创业却不敢创业,主要原因有：教学目的不明确,教学方法不到位,高校本身对创业教育认识不足。高校要改变这种状况,必须努力做到三个改变：一是改变教学目的,使大学生创业行为向进取行为转变;二是改变教学方法,使＂教＂向＂学＂转变;三是高校背景变化,使高校由象牙塔向创业型大学转变。