基于信息科技下青少年水上运动项目体能训练理念与方法

水上运动不仅能够让人畅游水面,与大自然亲密接触,而且它有很强的观赏性和趣味性,能够吸引很多的人们参与到其中。现今,不管是基于父母的培养要求,还是出自于儿童自身的兴趣爱好,我们在各种水上运动馆可以看到越来越多青少年的身影。但是,我们必须认识到水上运动又是一项非常消耗体力的运动,尤其是那些正处于生长发育过程中的青少年运动员,我们必须明确对其进行体能训练的重要性。本文就青少年在水上运动项目进行体能训练的理念与方法等进行了详细分析。     

基于最大匹配原则的变电运行培训仿真评估新方法

对于变电运行培训工作而言,仿真评估方法的作用主要是判断培训效果.影响判断准确性的因素主要是所使用仿真评估方法的实效性.本文从评价机制应具备的作用入手,对基于最大匹配原则的变电运行培训仿真评估新方法进行分析和研究.     

基于Web网页语料构建动态语言模型

为语音识别系统构建语言模型，首先要进行语料准备，语料来源决定语言模型的性能。Web网页中涵盖了各种最新的语言现象，为语料准备提供了最多样化的资源。但Web网页中语义完整字串通常夹杂在格式、标记、广告等无用字串中。首先介绍语言模型的训练算法和更新方法，继而提出一种从HTML文档提取用于训练语言模型的语义完整汉字字串的算法，最后给出语料提取实验结果、语言模型训练结果和语言模型的动态更新结果。为基于Web网页语料动态更新语言模型提供了一个完整的解决方案。     

关于现代科技中石榴皮总黄酮设计研发的新型应用

本文结合现代电子信息技术,为探讨石榴皮总黄酮对大强度耐力训练大鼠能量代谢方面的影响,对24只2月龄健康雄性清洁级SD大鼠采用改进的Bedford训练模型进行为期6周的大强度耐力训练,结果表明：与运动对照组相比,运动+PR组血糖水平、肝糖原含量、肌糖原含量均有极显著性升高（P<0.01）;运动+PR组血清Hb、血清BUN、血清GSH含量均有显著性升高（P<0.05）,血清CK含量显著性降低（P<0.05）,血清VE含量极显著性升高（P<0.01）。说明服用石榴皮总黄酮能提高Hb含量,有效改善大鼠运输氧的能力,保护肝脏,节省肝糖原,降低BUN水平,促进VE的生成作用,保持运动时机体代谢活动的正常进行。     

现代科技时代视角下的国外高层次水利人才培养政策探究

进入科技时代,人才资源成为最重要的资源,获取人才的根本途径在于教育和培养,面对严峻的人才短缺形势,世界各国纷纷采取行动,出台有关政策,争夺和培养复合型高层次人才。虽然发达国家与我国水利高等教育的培养模式不同,但是依然有很多值得借鉴和参考的有效经验,以较为代表的英国、美国及荷兰等国家为例。     

Optimum and near optimum feature selection for multivariate data

In designing pattern classification systems for a small number of training samples, investigators have quoted that there exists an optimal number of features one can use. This number is a function of the number of training samples and the probability structure of the data. A recursive algorithm is given for selecting a near optimal feature set for classifying a data set consisting of two classes described by two equiprobable multivariate normal densities with a common covariance matrix. We compare this near optimal feature selection algorithm with the optimal exhaustive search algorithm and discuss examples for both algorithms.     

数学建模活动对培养人才的作用

文章论述建模活动对培养人才的作用 ,对专科院校高等数学教学改革具有启发性 .     

Protein Secondary Structure Prediction with Partially Recurrent Neural Networks

Abstract

Partially recurrent neural networks with different topologies are applied for secondary structure prediction of proteins. The state of some activations in the network is available after a pattern presentation via feedback connections as additional input during the processing of the next pattern in a sequence. A reference data set containing 91 proteins in the training set and 15 non-homologous proteins in the test set is used for training and testing a network with a modified, hierarchical Elman architecture. The network predicts the secondary structures α-helix, β-sheet, and “coil” for each amino acid. The percentage of correctly classified amino acids is 67.83% on the training set and 63.98% on the test set. The best performance of a three-layer feedforward network is 62.7% on the same test set. A cascaded network, where the outputs of the recurrent network are processed by a second net with 13 × 3 inputs, four hidden and three output units has a predictive performance of 64.49%. The best corresponding feedforward net has a performance of 64.3%.     

认可机制下实验室人员培训工作的组织与开展

针对部分实验室在人员培训工作中存在的培训模式不清、培训机制不健全、培训质量较低的问题,系统地分析了计量实验室人员培训所涉及的主要类别、内容及要求等。对培训工作的流程逐个进行详尽地描述,分内部培训和外部培训两个方面对培训中应注意的问题进行重点说明,为广大计量实验室管理人员开展人员培训工作提供借鉴。     

Recent developments in Dual Resource Constrained (DRC) system research

Real world manufacturing systems are usually constrained by both machine and human resources. Human operators are often the constraining resource and transfer between workstations to process jobs when required. This kind of system is known as a Dual Resource Constrained (DRC) system and presents additional technical challenges which must be considered during planning and scheduling. These technical challenges can be categorised into the five main dimensions of job release mechanisms, job dispatching, worker flexibility, worker assignment and transfer costs. This paper aims to provide an overview of recent developments in DRC research concerned with each of these areas and also discusses some possible approaches to solving the resource scheduling problem in a DRC system. The focus is on materials published after 1995 and up to 2009. Previous reviews on DRC systems are commented on and followed by a review of recent works associated with each of the five dimensions of DRC system research. Advancements made and new methodologies proposed are discussed and future research directions are identified.