高校篮球选项课教学过程诸问题辨析——兼论几种最优化组合方法     

吴建平 《福建体育科技》2011,30(2):44-46

本文认为篮球选项课必须将组成教学过程的一切成分、师生活动的所有内外部因素,看成是一个相互联系的整体,在相互联系中考察所有教学任务和完成这些任务所可能采用的形式和方法,以保证教学过程在规定的时间内发挥从一定标准看来是最优的作用,获得可能的最大效果.  相似文献   

高校图书馆岗位评价的优化设计研究     

张艳芳 《图书馆建设》2011,(2):90-94

层次分析法具有实用性、系统性、简洁性等显著优点,比较适合高校图书馆的岗位评价,但也存在参与人数有限和构建结构不严谨等局限。综合利用半结构式深度访谈法、问卷调查法及因子分析法对基于层次分析法设计的高校图书馆岗位评价方案进行优化,可以有效地弥补层次分析法的缺陷,较好地反映高校图书馆各岗位的相对价值,可操作性强,得到了馆员的普遍认可。  相似文献   

基于VC#的图像处理算法集成软件设计     

袁亮 《人天科学研究》2011,(9):140-141

数字图像处理技术是目前研究的一个热门领域,而算法的管理仍然是一个较为困难的问题。将常用的处理算法改写为统一的规范格式,通过软件进行集成管理,是解决这个问题的较好途径。对算法集成软件功能进行了设计,主要包括算法演示、多算法合成与代码添加引导,并阐述了软件的基本结构和处理流程,对该类软件的开发有很好的参考价值。  相似文献   

基于小波域的视频关键帧选择算法     

苗永梅  朱俊平 《人天科学研究》2011,(9):53-55

视频关键帧的选择算法基于小波变换（discrete wavelet transform,DWT）特征、多分辨率处理及统计技术。算法在不同分辨率下结合视觉掩蔽特性、视频帧相关性分析小波系数并统计,根据统计结果选择合适的阈值,最后通过比较选择出视频关键帧。结果表明,该算法能选择视频关健帧,选择效果优于以像素估计、块估计等与图像内容无关的算法,且简单易行。  相似文献   

政策过程与政策质量     

刘海波  靳宗振 《科学对社会的影响》2011,1(3):84-95

近年来,科技政策质量越来越受到关注。本文依据科技政策的特殊性,提出政治与知识结合的ICD3PA模型描述政策过程,探讨政策过程与政策内容的互动关系,讨论了政策质量的五条标准,提出从完善政策过程入手改善政策内容、提高政策质量。  相似文献   

Control vector optimization and genetic algorithms for mixed-integer dynamic optimization in the synthesis of rice drying processes     

Wongphaka Wongrat  Ali Elkamel  Peter L. Douglas  Ali Lohi 《Journal of The Franklin Institute》2011,348(7):1318-1338

Rice drying synthesis is an essential operation that has to be done carefully and cost-effectively. Rice is harvested at high moisture content and hence must be dried within 24 h for safe storage. However, improper drying can cause fissuring in the rice grain, and thus greatly reduce its market value. Multi-pass drying systems are therefore used to gradually bring moisture content to desired level.The problem of rice synthesis, considered in this study, seeks the configuration of units and their corresponding operating conditions that maximize rice quality. This problem is formulated as a mixed-integer dynamic optimization problem. The integer part of the problem reflects process alternatives while the dynamic part originates from nonlinear differential-algebraic equations describing the drying behavior of a rice grain.Clearly such a formidable problem is not easy to solve. Hence, we propose an approach that makes use of two algorithms: a genetic algorithm to search for the best configuration of units and a control vector parameterization approach that optimizes the operating conditions for each configuration. We demonstrate the effectiveness of the approach on a case study.  相似文献   

Multilingual document mining and navigation using self-organizing maps     

Hsin-Chang Yang  Han-Wei Hsiao  Chung-Hong Lee 《Information processing & management》2011

One major approach for information finding in the WWW is to navigate through some Web directories and browse them until the goal pages were found. However, such directories are generally constructed manually and may have disadvantages of narrow coverage and inconsistency. Besides, most of existing directories provide only monolingual hierarchies that organized Web pages in terms that a user may not be familiar with. In this work, we will propose an approach that could automatically arrange multilingual Web pages into a multilingual Web directory to break the language barriers in Web navigation. In this approach, a self-organizing map is constructed to train each set of monolingual Web pages and obtain two feature maps, which reveal the relationships among Web pages and thematic keywords, respectively, for such language. We then apply a hierarchy generation process on these maps to obtain the monolingual hierarchy for these Web pages. A hierarchy alignment method is then applied on these monolingual hierarchies to discover the associations between nodes in different hierarchies. Finally, a multilingual Web directory is constructed according to such associations. We applied the proposed approach on a set of Web pages and obtained interesting result that demonstrates the feasibility of our method in multilingual Web navigation.  相似文献   

基于PLC的污水处理控制系统     

辛亭  白东坡  宋晓兰 《中国科技信息》2011,(8):37-38

本文以福清核电厂一期工程污水处理站为例,根据污水处理的工艺条件及运行特点,从仪表选型,硬件设计等方面全面地介绍了基于PLC的污水处理站仪控系统的设计思想和实现方法,满足了工艺控制要求,提高了厂区生活污水处理的效率。  相似文献   

浅议马斯洛需要层次理论视角下提高中职教师胜任力     

金剑波 《科教文汇》2011,(22):12-12,61

本文从马斯洛需要层次理论的视角对如何提高中职教师胜任力进行探讨,并从学校管理层面提出了一些相应的措施。  相似文献   

低碳钢生产连铸工艺的研究     

李俊峰  王忠新 《辽宁科技学院学报》2011,13(3):8-10

文章介绍了本钢炼钢厂在开发生产低碳钢的过程中,为防止连铸过程增碳、增氮及减少钢中非金属夹杂物,生产合格铸坯,对连铸工艺进行的改进及其在生产实践中取得的效果。  相似文献