Cauchy-Schwarz不等式的应用及推广

Cauchy-Schwarz不等式是异于均值不等式的另一个重要不等式,不仅在数学分析、高等代数中应用比较广泛,在竞赛数学和工程实际计算中也有广泛的应用.研究Cauchy-Schwarz不等式的几种特殊形式,并分别给出了它们的证明,最后给出了Cauchy-Schwarz不等式的推广形式.     

以"三个代表"为指导发展校办产业

本文阐述了在知识经济时代,高校校办产业担负着科技创新的历史使命,校办企业要依托高校的人才、科技优势不断地进行科技创新;要进一步理顺关系,更加规范化管理,要与时俱进.     

The impact of learning opportunities and decision authority on occupational health

In an investigation of 418 employees in the Norwegian Postal Service, employees with high learning opportunities and high decision authority were found to be better off on psychological functioning, health and organizational outcome variables than employees with low scores on these variables. Decision authority and learning opportunities had specific and independent impact on subjective health, psychological functioning, coping style and organizational outcome variables. There were, however, also interaction effects between demands, learning opportunities, and decision authority on subjective health. Learning opportunities and decision authority were operationalized with a questionnaire, supplemented with questions on the opportunities to learn skills beyond the present job situation. It is suggested that this is a particularly important dimension for coping with the present day rapid changes in working life, where the objective for many workers will be to broaden their repertoire and competence to increase their flexibility in the labour market.     

Evaluating the Effectiveness of Risk-Reduction Strategies for Consumer Chemical Products

Communication about risks offers a voluntary approach to reducing exposure to pollutants. Its adequacy depends on its impact on behavior. Estimating those impacts first requires characterizing current activities and their associated risk levels, and then predicting the effectiveness of risk-reduction strategies. Characterizing the risks from chemical consumer products requires knowledge of both the physical and the behavioral processes that influence exposures. This article presents an integrated approach that combines consumer interviews, users' beliefs and behaviors, and quantitative exposure modeling. This model was demonstrated in the context of consumer exposure to a methylene chloride-based paint stripper, showing how it could be used to evaluate current levels of risk and predict the effectiveness of proposed voluntary risk-reduction strategies.     

用跳马步系列研究奇素数阶规则完美幻方的个数

本文先介绍跳马步系列的有关概念及性质，然后用跳马步系列研究奇素数阶规则完美幻 方的个数。     

体验与成长：大学学业评价的一种理念——以教育研究方法课程为例

大学作业的评价是大学教学不可缺少的环节,以怎样的理念作为大学作业评价的追求关系到学生的成长与发展.“教育研究方法”课程是师范类专业的必修课,依据此课程的特点,它的评价方式应该充分贯彻“体验与成长”的理念,通过体验促进学生的专业成长.     

精英流动与中国引入近代教育的首次尝试——兼论科举制度对中国近代教育改革的阻碍

在19世纪,中国饱受了外来侵略,国内的行政和社会处于崩溃边缘。知识分子与执政精英之间形成了一个共识:即为了挽救国家,他们必须考虑前所未有的改革。鉴于儒家政治传统的重负和人才是有效性管理的关键,改革所采取的方式是建立能够培养出更好地应付一套新型问题的人才和系统。由于中国已经具有一个漫长而古老的传统的教育和招募官吏的机制,这使得问题变得复杂化。传统系统实际上是学生与资源的一种竞争,它很大程度上满足了服务大部分中国人的需要。改革家很快发现,建设新系统不容易,建设新系统必须在传统系统这一特定背景和领域内发展。所以,中国的第一次实施教育和官吏招募的改革遇到了强大的阻力。中国的传统教育和科举制度成为近代教育改革的巨大阻碍。     

阎若璩与汪琬礼学论争考述

阎若璩、汪琬为清初经学的代表人物。二人在康熙年间的礼学之争始于金石义例之辩,焦点集中在礼服学上,是清代礼学史上的第一次大论争。二人礼学观不同,研经治礼方法互异。汪琬兼采汉、宋之学,重求本义,主于律文以求"用实",不屑专事章句之学;阎若璩倡古礼以兴"古学",取法汉儒,重于考据训诂,排斥宋学,批评自朱子以来学者不事考据以致"私造典礼"之习。这场论争体现了清初礼学复兴时期的特征,对清代礼学发轫有着深远的意义。     

‘Water divide’ in the global risk society

In contemporary society, which is also defined as global risk society, the water crisis plays a controversial but decisive role in comparison with other kinds of risk (health care, environmental, financial, warlike). However, the sociological debate does not confer to the world water crisis the right significance: the essay precisely highlights this lack and focuses on the hypothesis that it could be also connected to the lack of interest that mass media agenda-setting shows to this issue. The result is that, in most cases, industrialized countries show an irresponsible approach towards a resource which is so precious for the simple fact that it is exhaustible. Furthermore, the advantages of both development and globalization are not equally distributed from a geographic point of view, and the gap between the ‘rich’ and the ‘poor’ is getting deeper and deeper also within this phenomenon. According to the author's perspective, it would be reasonable to talk about a water divide and assume a sustainable development capable of dealing with the overall problem of drinking water availability, its quality, its public access, with a view to democratic management and the sharing of this resource.     

支持多关键字的P2P搜索研究

传统的P2P系统是基于单特征词搜索的，且不支持语义，存在一定的局限性。提出了可变长数组模型，解决了P2P系统中多特征词搜索的问题；标识符空间的分割，使相同领域的文档在邻近的节点聚集，提高了搜索速度；本体技术的应用，使P2P系统能够理解搜索请求，有利于查全率的提高。