Bayesian approach to epsilon-skew-normal family

The estimation problem of epsilon-skew-normal (ESN) distribution parameters is considered within Bayesian approaches. This family of distributions contains the normal distribution, can be used for analyzing the asymmetric and near-normal data. Bayesian estimates under informative and non informative Jeffreys prior distributions are obtained and performances of ESN family and these estimates are shown via a simulation study. A real data set is also used to illustrate the ideas.     

认知问题和群知识浅析

研究群知识的形式模型有助于澄清抽象的哲学概念以及概念之间的关系。然而，目前群知识的形式化的处理方法和哲学所讨论的群知识是相脱离的。对群知识的形式化的定义可称为集体知识，是关于公共问题的分布知识以及公共知识和全分布知识之间的桥梁。所有的知识都是基于对主体的不同概念的区分而获得的。为了对认知群和集体知识进行模型，需要引入新的克里普模型，即认知群模型。定义一个好的群知识有助于对基于群知识的更高层次的哲学讨论。     

元前文献图籍所载黄河河源

有关黄河河源的概念，古代各种史学、地理、以及宗教文献都有相关记载。早期文献中提出的重源潜流的概念，也为塑造河源空间概念留下了发挥余地。及至唐朝，各种类书、笔记、野史关于位于境外的河源的著述沿用了上述文献中已有的地理知识，并融入了佛教世界观的空间概念以及唐代实地考察的纪录，逐渐构成了河源这一多元化的空间想象。本文探讨了不同知识框架对唐代河源记载的影响，以及在几幅现存宋代地图上所反映出的相关影响。这类文献资料有助于我们理解中古地理知识的深化与演变，以及后代地图上展示河源的更丰富的地图表现形式。     

基于协同效应的知识创新团队伙伴选择方法

在知识创新团队的伙伴选择问题中着重考虑了伙伴间的协同效应信息。首先,分析了伙伴之间的协同关系与协同效应,描述了考虑多个协同效应评价指标的知识创新团队伙伴选择问题;然后,建立了团队伙伴选择的数学模型,该模型是一个0-1二次整数规划问题,为了求解该问题,开发了一种GRASP启发式算法;最后,通过一个实例分析说明了所提出方法的可行性和实际应用价值。     

Producing information: communication and collaboration in the South African scientific community

Prior research has investigated the relationships between communication, collaboration and production of information/knowledge. Most of this research has been conducted either in developed countries where the internet facility is highly advanced or in developing countries with little internet access. Investigations in countries that fall in between these two extremes are rare. This study of respondents from higher education institutions and research institutes examines the relationship between collaboration and internet use, as well as productivity and internet use in the South African scientific system which has become a strong contributor to science in Africa.     

Knowledge and Skills of Sexual Abuse Prevention: A Study on School-Aged Children in Beijing,China

To examine the level of child sexual abuse prevention knowledge and skills in a sample of school-aged children, a total of 559 children from first to fifth grade were recruited from one primary school in Beijing, China. Participants were asked to finish a questionnaire surveying their knowledge and skills of child sexual abuse prevention. Results showed that accurate rate of knowledge on child sexual abuse prevention were between 44.0% and 80.0%. Percentage of participants having applied the self-protection skills of “saying ‘no,’” “going away,” and “telling adults” properly in hypothetical situations was 57.4%, 28.3%, and 48.3%, respectively. Third-to-fifth graders had a better performance than first-to-second graders, and girls performed better than boys. Findings suggest that Chinese school-aged children are in need of knowledge and skills related to child sexual abuse prevention, and education programs should be developed as soon as possible.     

Tilting at windmills: a cynical assemblage of the crises of knowledge

The essay offers one piece of a larger conjunctural analysis, in an effort to contribute to a better story of the contemporary organic crisis. It considers three elements of the complexity of the ‘crises’ of knowledge: First, it explores the increasingly felt social perception that knowledge (and the forms of authority that accompany it) has become less determined and determining, less identifiable, less effective, more troubled. It argues that one must think about these developments historically and contextually, rather than going along with the panic that has surrounded their increasing visibility in recent political events. Second, it considers some of the attacks on the university as well as some of the recent changes in the political economy and institutional forms of the academy. Finally, it argues that academics have failed to examine their own contributions to the crises of knowledge, failed to consider the ways their own cultures and practices can be located within rather than against the crises of knowledge.     

读书明志与德性教育路径的探讨--大学教学督导助力学生成才的第二职能

大学教学督导古之就有。这一制度不仅给教育教学质量的提高，学生综合素质的培养起到了弥足珍贵的助力和推力，同时也已经织入整个教育教学管理体系之中，成为密不可分的重要组成部分。教学督导，作为高校智能高、学问深、经验丰的一支优秀团队，除具有督导课堂内外教学工作职能外，还应具有督促、指导学生读书成才的第二职能，以此发挥教学督导的更大潜能和作用。     

“期刊承认”VS“共同体承认”:我国学术知识生产动力机制的“悖论”

"共同体的承认"是知识生产的根本动力,在西方"期刊承认"乃"共同体承认"的有机组成部分,学术人努力生产、发表创新性的知识以赢得"共同体的承认".然而在我国,量化考评下的"期刊承认"并未得到大部分学术人的真正认同,已非"共同体承认"的一部分,学术人生产知识主要是为了取得形式化的"期刊承认"以满足各种实用性的目的,而非生产出创新性的知识以赢得实质性的"共同体承认","期刊承认"与"共同体承认"之间的冲突导致了我国学术知识生产动力机制的失灵.为了化解两者之间矛盾,我们一方面应使"同行评议"机制在各种学术评价活动中占据主导地位,另一方面要进一步完善学术期刊的"匿名评审"制度,以弥合"期刊承认"与"共同体承认"之间的断裂,从而真正激励学术知识的生产.     

Bayesian analysis of a multiple-recapture model

In the Bayesian analysis of a multiple-recapture census, different diffuse prior distributions can lead to markedly different inferences about the population size N. Through consideration of the Fisher information matrix it is shown that the number of captures in each sample typically provides little information about N. This suggests that if there is no prior information about capture probabilities, then knowledge of just the sample sizes and not the number of recaptures should leave the distribution of Nunchanged. A prior model that has this property is identified and the posterior distribution is examined. In particular, asymptotic estimates of the posterior mean and variance are derived. Differences between Bayesian and classical point and interval estimators are illustrated through examples.