中国省域战略性新兴产业政策工具体系研究 ——基于政策指数统计分析

基于政策工具视角,运用内容分析法和政策指数法,对我国31个省(区、市)自2009年以来颁布的311个针对战略性新兴产业的规划及专门政策进行统计分析。研究发现,我国省域战略性新兴产业政策总体完善度指数平均为76.3%,强度指数平均为37.3%,创新度指数的平均得分为5.4%;政策子工具的选择具有显著偏好,频率依次为环境类、供给类和需求类;政策总指数呈现东、中、西由高到低的阶梯状差异特征。并提出加强地方政府需求类政策、优化政策子工具使用结构以及提高政策创新度等相应建议。     

基于Web的虚拟设计系统开发与应用

本文以虚拟现实技术、虚拟设计以及网络应用技术等理论为基础,深入研究了基于Web虚拟设计系统的实现方法。以虚拟现实技术为平台,整合多种网络技术,用软件实现虚拟现实的方法,构建了一个以B/S为体系结构的虚拟设计系统实例。     

甘肃省2000年水资源足迹的初步估算

水资源足迹是真实反映人类对水资源消费利用的新概念,能深刻揭示社会经济系统对水资源的真实消费,水资源足迹核算为水资源科学管理提供了一个新视角.文章提出了水资源足迹的概念和计算方法,以甘肃省为例,运用产品虚拟水研究方法核算并分析了2000年的虚拟水消费和水资源足迹.结果表明,2000年甘肃省全社会的水资源足迹为221.231×108m3,人均水足迹为865.24m3/人·年和2 371L/人·天,大大高于统计的水资源利用量;虚拟水计算基础上的水资源足迹衡量不仅深刻刻画了人类对水资源的真实占用情况,同时对我国干旱区水资源管理具有重要的战略启示:提高水资源利用效率、改善人类消费结构及消费模式和虚拟水进口.     

中国存托凭证若干问题探析

近年来存托凭证计划随着金融金球化趋势的演进而获得了长足发展,成为重要的全球性融资和投资工具。本文从中国存托凭证(CDR)概念的提出入笔,探讨发行中国存托凭证的积极意义与面临的问题,建议在条件成熟的情况下适时推出CDR,阐述了CDR计划有关当事人及其职能,提出CDR基本操作流程设想。     

基于VRML和Java的交互式虚拟产品设计

基于虚拟现实建模语言VRML和Java编程技术，将两者结合运用构建一个应用于数字科技馆中的交互式虚拟产品设计系统，使青少年可以通过互联网协同多人进行产品设计。     

Researching Internet Communities: Proposed Ethical Guidelines for the Reporting of Results

Communication researchers and social scientists are quickly discovering the value of data that exists in the postings of members of Internet e-mail, Usenet, and real-time groups. The ability to communicate with one's peers, no matter how esoteric the interests, is causing an explosion in the number of new virtual communities. The interpersonal dynamics of these groups are increasingly coming under the scrutiny of academic research. The publicly available archived records of Internet virtual communities are being analyzed for a wide variety of research interests. The ability to do naturalistic observations of group dynamics, as they are exhibited in these exchanges of text, has captured the attention of many researchers. The institutional review boards of major universities are granting researchers exempt or expedited (exempt from full review) status for this work, due to the public nature of the notes being analyzed. These studies often involve the lack of informed consent, where the group members under study are unaware they are being monitored. There is a potential for psychological harm to the members of these groups, depending on the way results are reported. This article explores the ethical considerations that must be taken into account to protect cyberspace participants. The guidelines proposed are based on the American Psychological Association ethical guidelines for use of human subjects in research. An explanation is offered as to how such guidelines can best be applied to the study of Internet communities. The constructs of Group Accessibility (the public/private nature of the actual cyberspace occupied by a group) and Perceived Privacy (the level of privacy that group members assume they have) are defined and proposed as two dimensions by which individual Internet communities may be evaluated in order to assure the ethical reporting of research findings.     

基于LabVIEW串行通信系统的开发

虚拟仪器是由软件实现的．其软件开发平台是LabVIEW。VISA是在所有LabVIEW工作平台上控制VISA、GPIB、RS-232以及其他种类仪器的单接口程序库，通过LabVIEW平台中的VISA模块编写控制程序，可以进行仪器控制。本文以串行通信为例．用LabVIEW构建仪器控制进行串行设备通信．在虚拟环境中使用VISA功能模块向串行设备读写数据，缩短了项目开发周期，提高了开发效率。     

Physical versus virtual manipulative experimentation in physics learning

The aim of this study was to investigate whether physical or virtual manipulative experimentation can differentiate physics learning. There were four experimental conditions, namely Physical Manipulative Experimentation (PME), Virtual Manipulative Experimentation (VME), and two sequential combinations of PME and VME, as well as a control condition (i.e., traditional instruction with absence of PME or VME). Undergraduate students' understanding of physics concepts in the domain of heat and temperature was tested in a pre- and posttest design that involved 182 participants assigned to the four experimental groups and 52 participants assigned to the control group. Conceptual tests were administered to assess students' understanding before, during and after instruction. The analyses revealed that the four experimental conditions were equally effective in promoting students' understanding of concepts in the domain of heat and temperature and better than the control condition; hence, manipulation, either physical or virtual manipulation, and not physicality, as such, at least in a context like the one of the present study, is important in physics learning.     

民族乐器阮指弹滚奏技术训练中应注意的几个问题

阮是我国重要的民族乐器,要获得阮的理想音质和丰富音色,掌握正确的演奏技术非常重要。在阮指弹滚奏技术的训练中,应注意阮滚奏技术与琵琶滚奏技术的区别、滚奏与快速挑弹的区别以及放松与紧张、音质与音色等几方面的问题。     

斜孔角度专用测量仪设计

文章通过斜孔角度测量仪的设计,开发了一种低成本、实用性强、精度高的专用仪器。该技术可较好解决国内中小企业目前关于斜孔角度难以测量的问题,具有较好的工程应用性。