MD5算法在Web数据库中的应用

随着Web数据库的应用越来越广泛,Web数据库的安全问题也日益突出,保障和加强数据库的安全性已成为目前必须要解决的问题。MD5算法作为一种单向加密算法,由于其加密后的数据难以解密,所以在保障Web数据库的安全性问题上采用MD5算法有着重大的作用与意义。     

武术文化中的道德规范

武德是中国武术理论观的核心,表现为以道德规范武术行为与方法,使道德观念成为武技之准则。武德以尊师重道、重义守信、立身正直、谦和仁爱为基本内容。     

利用有限域上典型群几何学构造Cartesian认证码Ⅱ

利用有限域上辛几何、酉几何及正交几何的几种类型的子空间构作了若干个Cartesian认证码,计算了它们的参数.假设编码规则按照一种均匀概率分布选择,那么假冒攻击成功的概率PI和替换攻击成功的概率PS也被计算.     

基于特征码的Imagehide与JPEGX图像隐藏信息检测以及提取

信息隐藏技术利用载体中存在的冗余信息来隐藏秘密对象,以隐藏秘密信息的存在。隐写术是信息隐藏的一个重要分支。隐写分析是通过对隐密对象的分析,对秘密信息进行检测及破解的技术。本文针对Imagehide与JPEGX两种网上常见的隐写工具,从分析特征码出发,揭示了检测和提取秘密信息的方法,并进行了实验,取得了较好的结果,证明了该方法的有效性。     

建立什么样的图书馆职业精神

主要从四个方面论述了图书馆职业精神的核心内容,即以图书馆职业为从业的价值标准,在理解图书馆职业的社会使命的基础上获得对职业的认同感,以崇尚科学的精神来理解图书馆职业的责任意识,用职业道德规范来实践图书馆职业精神。     

试析我国市场经济中的寻租问题

所谓寻租，即租金的寻求，通常是指经济主体寻求非生产性利润的行为，它是我国改革开放以来经济中出现的一种泛滥最广、危害最大的新现象，由此引发的一系列腐败行为也引起了理论界的广泛关注。本文试图分析寻租的形成机制以及对设租、寻租行为的治理与防范。     

试评《美国馆际互借法》(2001年修订本)

文章通过《美国国家馆际互借法》(1993年制订)与《美国馆际互借法》(2001年修订)两个文本的对比与分析,试图探讨美国图书馆馆际互借服务发展的过程与趋势,阐明馆际互借服务立法的重要性,以唤起我国图书馆界对馆际互借立法工作的关注和重视。     

基于二维码构建高校图书馆阅读推广服务体系——以华南师范大学图书馆为例

以二维码为纽带,以本科生经典阅读及书评大赛等常规性阅读活动为基础,营造书香校园的气氛;以纸质外刊和电子外刊阅读推广作为科研服务的抓手,以ESI作为学科服务的代表,构建一个面向本科生、研究生和教师,覆盖教学、科研和学科服务的高校图书馆阅读推广服务体系.该体系在华南师范大学图书馆阅读推广服务实践中具有对象全覆盖、专业性与学术性突出以及虚实结合等特点,起到了良好的实施效果.     

水泥除尘系统的PLC控制

介绍了用高等可靠性PLC强的作为控制器，在水泥厂除尘系统中的成功应用实例。     

Doping control in sport: An investigation of how elite athletes perceive and trust the functioning of the doping testing system in their sport

Doping testing is a key component enforced by anti-doping authorities to detect and deter doping in sport. Policy is developed to protect athletes’ right to participate in doping-free sport; and testing is a key tool to secure this right. Accordingly, athletes’ responses to anti-doping efforts are important. This article explores how the International Standards for Testing, which face different interpretations and challenges when policy is implemented, are perceived by elite athletes. Particularly, this article aims to investigate how elite athletes perceive the functioning of the testing system (i.e., the efforts of stakeholders involved in testing) in their own sport both nationally and worldwide. Moreover, it seeks to identify whether specific factors such as previous experience of testing and perceived proximity of doping have an impact on athletes’ perceptions of the testing system. The study comprises a web-based questionnaire (N = 645; response rate 43%) and uses qualitative findings to elaborate on and explain quantitative results. Results showed that two-thirds of the athletes reported the national testing programme in their sport to be appropriate. A majority of the athletes who had an opinion on the subject regarded testing programmes in some countries as not extensive enough or believed that in certain countries doping control was downgraded to win medals. Past experience of testing seemed to have a positive influence on trust in the concrete measures; however, if athletes experienced flaws during the control procedures, this could increase distrust and cause worry. The proximity of doping in an athlete's sport influenced the athlete's perception of the testing system. Particularly, athletes who need the testing system to be effective and to function well across the world show greater distrust of or dissatisfaction with the current testing system. The athletes’ diverging views indicate that contemporary anti-doping policy is simultaneously met with support, (dis)trust and frustration. By integrating the views and experiences of Danish elite athletes, this study confirms that the current testing system is confronted with obstacles, and it contributes knowledge about some of the challenges WADA faces when policy is implemented. Implications of results and recommendations for anti-doping authorities are outlined in the paper.