基于信息熵的群组聚类组合赋权法

在多属性群决策方法的研究中,为了科学地确定专家的权重,提出一种基于信息熵的群组聚类组合赋权法。依据各个专家的判断矩阵归一化得到的排序向量,利用相关系数法构造相关矩阵。通过分析阀值变化率选取最优聚类阀值,对相似程度较高的排序向量给出合理的聚类。运用信息熵为类内专家赋权,综合聚类结果和排序向量的信息熵,确定专家的总权重。算例表明该方法可以对较为相近的专家评价结果进行有效分类,并准确衡量每位专家评价信息量的大小,能够有效提高专家赋权的合理性和群组决策的科学性。     

高校引智工作的问题及对策分析

高校引智工作是强校之道,也是促进高等教育发展的重要途径,而引进外国专家成为实现高校国际化的重要方面。本文针对高校引智工作中存在的具体问题,提出了可操作性的建议。各地高校要根据实际工作需要,因地制宜,以提高外国专家聘请效益,优化引智工作。     

宋代古文家的“尊韩”

宋代初年 ,西体盛行。其文夸奇斗艳 ,渐失本真。仁宗患时文之弊 ,下诏讽勉学者以近古。先是柳开、王禹、姚铉、穆修等古文家提出“尊韩”,及欧阳修知贡院 ,倡导古文运动 ,扬言“韩氏之文之道 ,万世所共尊 ,天下所共传而有也。”由是为文之士 ,率多“尊韩”矣。常见之文学史书、专著、论文 ,多有提及宋代古文运动中之“尊韩”,但皆语焉不详。文章先述宋代古文家“尊韩”之言论 ,次析其成因 ,继论其影响 ,聊作宋代古文运动之钩沉如何     

企业创新发展的群体专家问题发生系统浅谈

信息社会使社会方方面面发生翻天覆地的变化 ,如何抓住机遇 ,开拓新的生态位 ,是企业创新发展战略管理的着眼点。而企业战略管理是一个复杂的决策过程 ,它是建立在决策科学化、民主化的基础上的。本文提出群体专家问题发生系统是通过分析人机相结合系统模拟的群体决策分析 ,发现企业发展中所存在的问题 ,为企业创新发展提供决策支持。     

互联网中基于MPEG-4流媒体播放的研究

在分析RTP/RTCP协议的基础上分析了传输MPEG-4编码视音频数据的RTP分组负载格式。研究并提出了一种MPEG-4视音频流播放方案。介绍了其线程模型、总体实现框架等。并采用视频流同步音频流的方案使得播放器的播放质量有了较高的保证。实用表明,采用该方案实现的客户端具有稳定性好,占用传输带宽低等优点。     

试论社会科学成果的准确评价

社会科学成果评价是一个复杂的系统工程,应从掌握学科特点、熟悉评价规律、知晓学科前沿、了解学科分类、慎选评审专家五个方面着手,对相关成果进行系统考评,以确保评价结果的准确公正。     

BRANDING,CELEBRITIZATION AND THE LIFESTYLE EXPERT

The lifestyle expert – a figure whose knowledge is tied to the ordinary and the everyday – has emerged as a major cultural authority in recent times. This article examines the role and status of ‘ordinary experts’, such as Martha Stewart and Jamie Oliver, in relation to processes of ‘celebritization’ and branding. Linking these processes to broader shifts around the domestication and privatization of public culture and citizenship, I discuss the branding of lifestyle advice in the context of the emergence of informational capitalism and the growing role of the consumer in providing branded lifestyles with value and meaning. Arguing that the privatized modes of lifestyle consumption modelled by figures like Stewart and Oliver have emerged as a pre-eminent site of social relations, communality and lifestyle ‘activism’, the essay concludes with a discussion of what kind of civic politics might emerge out of this context.     

苏联专家与焦作中马村竖井建设

焦作中马村竖井是20世纪50年代苏联援助中国的156项工程之一,是焦作地区苏联专家人数最多、指导建设时间最长的一项工程。1955年到1958年间,苏联专家在援助中马村竖井过程中曾经发挥过重要作用,同时专家也带来了消极影响,导致了竖井1958年两次淹井事故的发生。两国关系恶化后,苏联专家陆续撤走,这给了中国方面独立自主的机会,最终依靠中国人的智慧和力量制服了英国、日本和苏联三国工程技术人员都无法制服的煤矿地下水灾害。焦作中马村竖井于1970年简易投产。     

Limits of Knowledge and the Limited Importance of Trust

Perceived risk and related attitudes have been implicated as major factors in many of the difficult policy problems that face modern society (nuclear power, genetically modified food, etc). Experts often argue that no or very small risks are involved; people are still worried. Why? The standard answer is lack of trust. Data on trust and risk perception, however, point to only a weak relationship between the two (r approximately 0.3). It is suggested here that the reason for the surprisingly minor importance of trust is that people believe that there are clear limits to how much science and experts know. Results are presented from studies of risk perception of the public, experts, and politicians. Politicians and members of the public believe that there are many unknown effects of technology and such beliefs were strongly related to their perceived risk. Experts on nuclear waste, on the other hand, seemed to believe that little is unknown in their field of expertise. Regression analyses of risk perception showed the unknown‐effects factor to be a more important explanatory factor than trust for the public and politicians.     

用于DVD的MPEG2实时解复用器的FPGA设计与实现

设计了一种模块化,内部采用总线形式,用于ＤＶＤ的ＭＰＥＧ２系统层实时解复用器,并对电路的总体结构、起始头检测电路、ＰＥＳ包头解码电路和ＰＬＬ电路作了详细的介绍和讨论,给出了整个实时解复用器的ＦＰＧＡ硬件实现结果。该系统具有基本流多路分配、系统时钟恢复的功能,同时又有结构简单、耗用资源少和易于集成等特点,适于 ＤＶＤ及相关领域的应用。