固定资产投资与国内生产总值的误差修正模型研究

运用协整理论和误差修正模型研究固定资产投资和国内生产总值之间的关系，可以发现它们之间存在长期均衡的协整关系，使用误差修正模型比普通的单变量方程更能反映两者长期和短期的关系，还可以避免谬误回归问题。     

Assessment of three-dimensional joint kinematics of the upper limb during simulated swimming using wearable inertial-magnetic measurement units

The analysis of the joint kinematics during swimming plays a fundamental role both in sports conditioning and in clinical contexts. Contrary to the traditional video analysis, wearable inertial-magnetic measurements units (IMMUs) allow to analyse both the underwater and aerial phases of the swimming stroke over the whole length of the swimming pool. Furthermore, the rapid calibration and short data processing required by IMMUs provide coaches and athletes with an immediate feedback on swimming kinematics during training. This study aimed to develop a protocol to assess the three-dimensional kinematics of the upper limbs during swimming using IMMUs. Kinematics were evaluated during simulated dry-land swimming trials performed in the laboratory by eight swimmers. A stereo-photogrammetric system was used as the gold standard. The results showed high coefficient of multiple correlation (CMC) values, with median (first–third quartile) of 0.97 (0.93–0.95) and 0.99 (0.97–0.99) for simulated front-crawl and breaststroke, respectively. Furthermore, the joint angles were estimated with an accuracy increasing from distal to proximal joints, with wrist indices showing median CMC values always higher than 0.90. The present findings represent an important step towards the practical use of technology based on IMMUs for the kinematic analysis of swimming in applied contexts.     

一种自适应蚁群算法及其应用

蚁群算法是一种具有许多优良特性的新型算法,该算法具有较强的发现较好解的能力,但同时也存在容易出现停滞现象,收敛速度慢等缺点。在介绍基本蚁群算法的基础上,针对蚁群算法的不足,提出了一种自适应蚁群算法。该算法对蚁群算法中的信息素在更新过程中进行自适应调整。实验结果表明,该算法比传统的蚁群算法具有更好的搜索全局最优解的能力,并具有更好的收敛性。     

制冷机组的能量调节策略分析

冷冻站设备中制冷机组的电耗是影响制冷效率高低的重要因素，提高制冷机组的制冷效率是节能的关键环节。根据制冷机组的运行特性，可以通过制冷机组的台数控制达到节能的目的。而提高温度传感器和流量传感器的测量精度，对冷冻水温进行再设控制是群控的两种重要策略。     

学科活动·单元主题活动·方案教学

在幼儿园教育改革过程中,许多幼儿园疲于追赶时代潮流,从学科活动到单元主题活动,再到热极一时的方案教学,变到最后却发现教育质量并没有得到多少提高.其中的症结是什么?本文在分析了学科活动、单元主题活动和方案教学的基础上,指出三者之间不再是泾渭分明,而是处于一种边缘状态,正在逐渐走向融合.幼儿园教育改革的核心不是表面的教育活动形式选择,而是教师教育观念的深层变革.     

具有弱单位元的Riesz空间的表示定理之注记

基于前文《Ｒｉｅｓｚ同构于Ｃ（Ｘ）（Ｘ为某一完全正则空间）的Ｒｉｅｓｚ空间的特征》的主要结果，得到一个代数推广，并且研究了在主要结果中使用的一些条件的关系。     

课件制作中插接Flash动画的方法

利用ActiveX控件或包以及启动程序/打开文档等工具,可以在PowerPoint、方正奥思、 Authorware中插接Flash动画.实践证明这些插接Flash动画的方法是切实可行的.     

二次域 （√P）中的完全平方数

运用Pell方程的知识,借助于不定方程的解题方法,对二次域 （√P）的基本单位的范进行研究．给出了Pell方程的解,并证明了对于任意素数p,存在无穷多个形如py^z±1的完全平方数,进一步说明了对于任意无平方因子数d,存在着无穷多个形如dy^2＋1的完全平方数．     

基本建设单位工程预付款业务处理的分析与思考

作为一个基本建设单位，在开展工程建设过程中，经常会发生预付工程款业务。本文通过对该类业务核算常用的两种会计处理方法的分析，指出这两种方法各自存在的不足及其对基建报表数据编报的影响。并在上述方法的基础上提出了一些处理问题的新设想，以期提供较真实、完整的财务资料和财务信息。     

Enhanced teaching and student learning through a simulator-based course in chemical unit operations design

This paper illustrates a teaching technique used in computer applications in chemical engineering employed for designing various unit operation processes, where the students learn about unit operations by designing them. The aim of the course is not to teach design, but rather to teach the fundamentals and the function of unit operation processes through simulators. A case study presenting the teaching method was evaluated using student surveys and faculty assessments, which were designed to measure the quality and effectiveness of the teaching method. The results of the questionnaire conclusively demonstrate that this method is an extremely efficient way of teaching a simulator-based course. In addition to that, this teaching method can easily be generalised and used in other courses. A student's final mark is determined by a combination of in-class assessments conducted based on cooperative and peer learning, progress tests and a final exam. Results revealed that peer learning can improve the overall quality of student learning and enhance student understanding.