药物化学试题库在独立学院的实践与思考

试题库是实现教考分离提高教学质量的重要手段,独立学院建立试题库具有重要意义。文章通过教学实践,分析了《药物化学》试题库的建设方法以及应用。     

《微生物技术》课程教学改革的研究

文章通过对微生物技术课程的项目化教学改革研究,提高了课程的实践应用性,通过考核方式的改革提高了学生的积极性,以及解决问题分析问题的能力和团队协作的能力。     

《应用电化学》教学方法的探索与实践

文章从充分调动学生主动学习的积极性、高度重视培养学生的科研素质、努力构建和实施自主研究型教学模式等三个方面,阐述了作者在《应用电化学》教学过程中对教学方法的一些探索与体会。     

功能化注塑机的科学发展研究及自主创新(下)

功能化注塑机是特种具有注塑功能的复合型成型加工设备,驱动注塑技术的科学发展。提出了功能化注塑机的内涵,分析了功能化注塑机科学发展十个方面存在的理念问题,简述了功能化注塑机的科学发展的八个特点,研究了十类功能化注塑机的技术发展现状及科学发展要点,介绍了功能化塑料件引领创新创造功能化注塑机的实例及一种自主创新的功能化的工具箱包注吹机。     

基于设计性试验提升本科生自主创新能力——以土木工程材料实验课程教学改革为视角

实验教学是土木工程材料课程的重要环节,对学生掌握课程的理论知识、深刻理解材料性能具有极其重要的作用。根据课程特点,基于设计性试验,以设计性、综合性及创新性试验为主,验证性实验为辅,建立试验与实际工程相结合、试验与专业设计大赛相结合的多元化人才培养体系。通过实施开放与弹性的实验室管理制度,逐步提高学生的自主创新能力,以及分析和解决实际工程问题的能力。     

高校自主招生实施效果的实证研究——基于CQ大学自主招生学生与普通高考学生的跟踪与比较

从后期质量跟踪的角度,对自主招生学生进校后的情况进行了跟踪调研,通过学生问卷调查结合大量的客观数据统计,从能力素质方面及学习成绩、奖学金获得、参加科研情况等多角度分析、比较自主招生和普通高考两类学生入校后的差异,并在此基础上分析结论背后的原因,以此检验CQ大学自主招生效果,回答社会对自主招生的质疑,丰富相关研究领域成果。研究表明,自主招生学生能力素质均分及各项能力素质均显著高于普通高考学生;自主招生学生成绩略高于普通高考学生;自主招生学生综合素质表现(综合奖学金、五四评优、争先创优)显著高于普通高考学生;自2015年开始自主招生学生科创能力(科创项目立项)显著高于普通高考学生。     

隧道控制线性转换法代替交切投点法研究

在研究线性转换法理论的基础上,分析了线性转换法相比交切投点的优势,并结合近年来多条铁路工程建设应用实例,进一步验证了线性转换法的优越性,对长大隧道控制网测量优化设计具有重要意义。     

Equations to predict female manual arm strength based on hand location relative to the shoulder

The purpose of this study was to develop regression equations to predict manual arm strength for a wide variety of hand locations within the reach envelope. Maximum voluntary manual arm strength was determined from 71 female participants in six exertion directions (superior, inferior, anterior, posterior, medial and lateral), in a total of 28 hand locations. Forces ranged from 51.3 to 164.4 N, and had a pooled coefficient of variation of 29.9%. Across all 168 combinations of hand locations and exertion directions, the multivariate regression equations explained 92.5% of the variance and had a root mean square error (RMSE) of only 6.4 N, using only the anterior, lateral and vertical location of the hand relative to the active shoulder joint as inputs. These equations provide a proof-of-principle for our novel regression approach, and represent a first step towards a more comprehensive equation to estimate maximum acceptable forces for occupational tasks.     

含独立源T-Π形电路等效变换的几个结论

本文讨论了含独立电源T形电路和Π形电路的等效变换,总结了几个相关的结论并给出了证明。这些结论扩展了T形电路和Π形电路等效变换的内容。通过实例说明了这些结论的正确性。本文的分析对电路课程教学具有一定的价值,可供教学参考。     

Analytical modeling of Transmission Control Protocol NewReno using Generalized Stochastic Petri Nets

This paper presents a novel analytical model of Transmission Control Protocol (TCP) using a generalized stochastic Petri net (GSPN). Extensive simulation work has been done for the performance evaluation of TCP NewReno protocol. In view of the limitations of the simulation technique, we present an analytical approach using GSPN. A GSPN is a useful mathematical tool that solves continuous time Markov chains for complex systems and evaluates the stationary behavior. In this paper, we analyze the slow‐but‐steady variant of TCP NewReno. The model captures the behavioral aspects of the slow start and the congestion avoidance phase together with the fast retransmit and recovery capabilities of TCP NewReno. Performance metrics such as throughput, goodput, and task completion time of the system are obtained. The effect of variation in the model parameters on the performance is studied. The results are validated using the network simulator, and their accuracy is verified by evaluating the confidence interval. The performance of the proposed model is compared with that of TCP Reno. The performance of the proposed model is also compared with one of the previous models. The numerical illustrations and comparison of the proposed technique with simulation validates the accuracy, efficiency, and competence of the GSPN technique. While GSPN modeling for TCP is investigated in depth for the TCP NewReno and TCP Reno variant in this paper, other protocols could be also analyzed similarly. Copyright © 2013 John Wiley & Sons, Ltd.