Vague集相似度量在高校教师工作绩效综合评价中的应用

通过描述Vague集的三维含义、不确定含义、不确定隶属度对肯定和否定隶属程度的影响,运用相似度量的公式,对高校教师的工作绩效进行综合评价.在该评价方法中,Vague集之间的相似度量是高校教师工作绩效的综合评价与期望值(理想值)之间的度量,相似度量越大,综合评价就越高.并且通过实例阐明了Vague集之间的相似度量在高校教师工作绩效的综合评价中的可行性.     

一类基于痕函数的Vague集（值）间的相似度量

提出一类基于痕函数的Vague集（值）间的相似度量。通过与现有公式的比较,阐明该类公式有较强的分辨能力,这些公式是实用的。     

基于Vague软集的投资决策方案优选方法研究

为了快速准确地找到最优的投资决策方案,根据Vague集和Vague软集理论,提出了一种基于Vague软集相似度量的方案优选方法。首先提出了一种Vague软集间的相似度量公式并给出合理化的证明,然后将该方法应用于企业投资设厂的决策方案优选中。实例验证表明该方法是合理有效的。     

偏序集上区间拓扑的Hausdorff性

设L是偏序集。本文首先引入点的极大互异集的概念,然后证明了：若L中的每一个点的极大互异集是有限的,则L上区间拓扑是Hausdorff,从而推广了文[1]中的相关结果。最后,给出了一些关于偏序集上区间拓扑的Hausdorff性的等价刻画。     

关联数据资源集相似度计算方法研究

文章提出的适用于关联数据资源集相似度计算的综合描述信息模型,分为基本描述、内容描述和外部链接3个模块描述资源集,并根据各信息项的特点挑选字符串相似度、集合相似度、向量空间模型和基于统计和语义的相似度等算法计算资源集相似度,在一定程度上解决了当前关联创建中相关资源集手工配置的问题。     

自相似算子性质的一些探究

引入了在有限维复Banach空间上的自相似算子的定义,并讨论了自相似算子的特征和具体性质。     

流的吸引子的一个性质

给出拓扑空间上流的吸引子的子集是吸引子的充要条件，其结论改进了前人的结果。     

基于文本空间表示模型的文本相似度计算研究

在分析现有文本表示法的基础之处,提出一种以段落、语句、词语为层次结构的文本表示方法——文本空间表示模型,并在此模型基础上探讨一种以文本段落为基本单位的相似文本计算算法,以实现相似文本检测目标。最后建立测试集并在测试集上执行检测实验,结果表明此方具有较好的相似文本发现效果。     

φ压缩型集值映射列的公共不动点定理

在度量空间中,研究了φ压缩型集值映射列的公共不动点定理,给出了如下结果:设集值映射序列Ai:X→Pf(x)满足:任意i2j=1,2,…,x,y∈X及μ∈Ax,存在υ∈Aiy,使得d(μ,υ)≤φ(d(x,y),d(x,Ax),d(y,ajy),d(y,a,x)):则{Ai}有公共不动点.     

Ф压缩型集值映射列的公共不动点定理

在度量空间中,研究了Ф压缩型集值映射列的公共不动点定理,给出了如下结果：设集值映射序列Ai：X→Pf（x）满足：任意ij=1,2,…,x,y∈X及u∈Ax,存在v∈Ay,使得d（u,v）≤Ф（d（x,y）,d（x,Ax）,d（y,Aiy）,d（y,Aix））：则{Ai}有公共不动点。     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence     

Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels

<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese     

More than Skin Deep – Understand Skin Biology by Means of Dermatogenomics

<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages.