以培养复合型人才为目标的计算机专业英语教学体系的研究

本文探讨如何建立以培养具有较高计算机专业知识和较强的英语听、说、读、写等应用能力的复合型人才为目标的计算机专业英语教学体系,尝试改进教学方法,修正课程内容与结构。实践表明,新的教学体系不仅明确了计算机专业英语的教学目的和人才培养目标,更能够使学生在英语中学习信息技术、从计算机专业知识的应用中体会和使用英语。     

传统织物的一次性设计

通过对纤维艺术的学习与研究,我对纤维构成织物的设计有了进一步的思考。在传统编织基础上不断发展起来的现代纤维艺术,一方面在艺术领域得到了有目共睹的长足发展,另一方面在市场经济下也不断地回归实用与设计。在纤维构成织物的设计中包括直接完成半成品或成品的一次性设计和在此基础上进行的二次性设计。尤其,对"传统织物的一次性设计"进行研究是很有必要的。     

基于J2EE的地税网上申报系统的设计与实现

文章阐述了地税网上申报系统开发的背景和意义;介绍了基于J2EE的网上报税系统的结构、软件的主要功能及具体的实现方法和所用的关键技术;总结了所用技术的优势以及系统中难点的处理。     

寻找电气故障行之有效的方法—“两分法”和“多分法”

本文介绍了“两分法”和“多分法”寻找电气故障的全部过程,掌握规律,集中目标,安全、排除故障,提出了设备的运转率。     

Unpowered Knee Exoskeleton Reduces Quadriceps Activity during Cycling

Cycling is an eco-friendly method of transport and recreation. With the intent of reducing the energy cost of cycling without providing an additional energy source, we have proposed the use of a torsion spring for knee-extension support. We developed an exoskeleton prototype using a crossing four-bar mechanism as a knee joint with an embedded torsion spring. This study evaluates the passive knee exoskeleton using constant-power cycling tests performed by eight healthy male participants. We recorded the surface electromyography over the rectus femoris muscles of both legs, while the participants cycled at 200 and 225 W on a trainer with the developed wheel-accelerating system. We then analyzed these data in time–frequency via a continuous wavelet transform. At the same cycling speed and leg cadence, the median power spectral frequency of the electromyography increases with cycling load. At the same cycling load, the median power spectral frequency decreases when cycling with the exoskeleton. Quadriceps activity can be relieved despite the exoskeleton consuming no electrical energy and not delivering net-positive mechanical work. This fundamental can be applied to the further development of wearable devices for cycling assistance.     

强化财务成本控制 促进经济效益提高

在海南气体处理厂工程项目中,中海石油平台制造公司在总结以往单项工程财务管理经验的基础上,认真分析了该项目的特点,在财务管理上进行了大胆的探索与改革,即对整个工程实行了“施工全过程的成本控制管理”,采取了按部门控制费用的措施;充分发挥了计算机在财务管理上的作用;财务人员深入各部门和施工现场,掌握工程施工情况,更好地控制成本,跟踪并及时反馈核算情况;准确掌握税收政策,避免重复纳税,使承包工程取得很好的经济效益。     

Errors in Seligman's "The effectiveness of psychotherapy: The Consumer Reports study."

Contends that there are 3 methodological errors and an inconsistency in M. E. P. Seligman's (see record 1996-13324-001) reanalysis of the 1995 Consumer Reports survey of the effectiveness of psychotherapy. These errors are directly relevant to the cost-effectiveness of psychotherapy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

CHV190系列变频器在永磁同步电机驱动矿井提升机中的应用

本文分析了矿井提升机的运行特点,详细阐述了英威腾CHV190系列起重提升专用变频器用于永磁同步电动机驱动的节能型矿井提升机的选型配置原则,最后介绍了应用现场的调试步骤及注意事项。     

A quantitative multimodal discourse analysis of teaching and learning in a web-conferencing environment – The efficacy of student-centred learning designs

This paper presents a quantitative approach to multimodal discourse analysis for analyzing online collaborative learning. The coding framework draws together the fields of systemic functional linguistics and Activity Theory to analyze interactions between collaborative-, content- and technology-related discourse. The approach is used to examine how the task subject matter, the activity design, and the choice of interface affected interaction and collaboration for a computing course conducted in a web-conferencing environment. The analysis revealed the critical impact of activity design on the amount and type of discourse that transpired. Student-centred designs resulted in over six times more student discourse as compared to teacher-centred designs and created a learning environment where students took greater ownership over the tasks and contributed more to the content-based discussion. The paper also incorporates a rationale for the approach to coding and a reflection on its efficacy for discourse analysis in technology-based learning environments.     

EPA功能安全协议的研究与实现

现场总线在通信传输过程中,会受到各种通信故障的影响,而现场总线与功能安全的结合可降低这种影响。该文描述EPA功能安全通信模型,针对通信传输过程中可能出现的通信错误,采用时间戳、序列号、CRC校验等功能安全通信技术。给出EPA功能安全协议层的报文结构,阐述功能安全协议层的具体实现过程。