对等代码复杰过程中的质量保证:一个基于计算机科学的策略

The software industry is asking universities and colleges to cultivate more software engineers who can write quality programs.A peer code review process is an ideal approach to maximize the learning outcome of students in programming.In this paper,the process in our previous publication was improved.The found problems were analyzed which will take as the basis of the future research on quality assurance.Finally,a set of solutions based on computer science were proposed to further improve the whole review process.     

NEW METHOD FOR PART SYMMETRY AUTOMATED RECOGNITION IN DFA

Design for assembly (DFA) evaluation has preved to be a systematic approach in determining how well a product is designed from the point of view of assembly. Geometric feature, such as symmetry, is an important factor when evaluating the assemblability of a part in it. But the automated detection of symmetry has always been considered to be a difficult problem which requires great effort. Proposed here is a new method for part symmetry automated recognition. The method is based on ray detecting theory and can effectively recognize the symmetry of parts with various shapes. It is of great importance to linking together DFA evaluation procedure with CAD model.     

Static and dynamic finite element analysis of 304 stainless steel rod and wire hot continuous rolling process

Three-dimensional finite element models were developed to analyze 304 stainless steel rod and wire hot continuous rolling process with the help of MSC.Marc software. The entire 30-pass deformation process and the actual parameters of production line were taken into account. Static and dynamic procedures were used to study the continuous rolling process with the aid of the thermo-mechanical coupled FEM of elastic-plasticity. The properties of billets, such as deformation, temperature field and rolling force, were mainly discussed. The simulation results of temperature agree well with the measured values. Comparisons of the analysis results obtained using static implicit method and dynamic implicit method were presented. It is shown that static implicit procedure is more accurate than dynamic implicit procedure and is able to simulate the rolling process with a lower speed, such as a roughing mill. Whereas, dynamic analysis shows a higher efficiency than static analysis and is fit for simulating the rolling process with a higher speed, such as a finishing mill.     

Using Agents in Web-Based Constructivist Collaborative Learning System

Web-based learning systems are one of the most interesting topics in the area of the application of computers to education. Collaborative learning, as an important principle in constructivist learning theory, is an important instruction mode for open and distance learning systems. Through collaborative learning, students can greatly improve their creativity, exploration capability, and social cooperation. This paper used an agent-based coordination mechanism to respond to the requirements of an efficient and motivating learning process. This coordination mechanism is based on a Web-based constructivist collaborative learning system, in which students can learn in groups and interact with each other by several kinds of communication modes to achieve their learning objectives efficiently and actively. In this learning system, artificial agents represent an active part in the collaborative learning process; they can partially replace human instructors during the multi-mode interaction of the students.     

软件工程教育中的能力成熟度模型

Good software engineering education plays a vital role to improve the software development ability.In China,many software engineering education institutions have been established in recent years.Current research on the software engineering education is mostly focused on the certain concrete courses and body of knowledge,which lacks the view as an integrated education process.How to evaluate the institutions' education capability and how to help them to improve their capability is a critical issue.This paper describes a model for measuring the maturity of software engineering education processes,which leverages the CMM(Capability Maturity Model)of software process.We call this model SEEDU-CMM(Capability Maturity Model for Software Engineering Education).SEEDU-CMM is used to evaluate the capability of the software engineering education institutions,as well as to provide guide for them to improve their education quality.     

Congestion control for ATM multiplexers using neural networks：multiple sources／single buffer scenario

A new neural network based method for solving the problem of congestion control arising at the user network interface (UNI) of ATM networks is proposed in this paper. Unlike the previous methods where the coding rate for all traffic sources as controller output signals is tuned in a body, the proposed method adjusts the coding rate for only a part of the traffic sources while the remainder sources send the cells in the previous coding rate in case of occurrence of congestion. The controller output signals include the source coding rate and the percentage of the sources that send cells at the corresponding coding rate. The control methods not only minimize the cell loss rate but also guarantee the quality of information (such as voice sources) fed into the multiplexer buffer. Simulations with 150 ADPCM voice sources fed into the multiplexer buffer showed that the proposed methods have advantage over the previous methods in the aspect of the performance indices such as cell loss rate (CLR) and voice quality.     

教育学习工具灵活和有效的瘦客户部署方式

Given today's dynamic and fast paced world of Information Technology(IT),it has become more challenging for an IT manager to provide students with the most flexible and innovative learning environment.The requirement to provide these facilities must be balanced against constraints such as capital spending within budgets,maintenance costs and staffing issues.This paper discusses how a server-centric IT solution,such as thin clients,is capable of meeting these demands in a more efficient manner particularly in relation to Financial Management,Infrastructure Management and Security Management.The flexibility and efficiency of server-centric technology as an education tool is overviewed as experienced by several departments within the Dublin Institute of Technology.     

Folding patterns of chromatin in chicken erythrocyte studied by using AFM and TEM

Four folding patterns (～15, ～30-40, ～60 and ～90-110 nm) of the higher_order structure of chromatin in chicken erythrocytes have been observed with an atomic force microscope (AFM) under near natural conditions. Results showed that the chromatin in the interphase nucleus of chicken erythrocyte was not in a disorganized form but represented a higher_order conformation. The thin sections of the chromatin in the nucleus of chicken erythrocyte were examined with a transmission electron microscope (TEM). Compared with TEM, AFM had the advantages that the samples did not need the preparation procedures such as fixing, sectioning and staining, and thus were closer to their native condition.     

A three-dimensional spatio-temporal EEG pattern analyzing system

Spatio-temporal pattern analysis of EEG is an important tool in brain research. An EEG pattern analysis system based on a hierarchical multi-method approach is proposed here. The system consists of multiple steps including extraction of target signal, acquisition of intracranial electric activity distribution, adaptive segmentation of EEG and spatio-temporal pattern recognition. Some modern signal processing methods such as common spatial subspace decomposition, hidden Markov model are adopted. This paper also proposes an algorithm named LORETA-FOCUSS to estimate the current density inside the brain with a high spatial resolution. Microstate analysis of EEG is extended to the 3-D situation. The system was applied to the brain computer interface problem and achieved the highest accuracy of 88.89% with an average accuracy of 81.48% when classifying two imaginary movement tasks, while the data were not manually pre-selected. The result has proved spatio-temporal EEG pattern analysis is an efficient way in brain research.     

Analysis on Mood ＆ Modality in English Listening Comprehension

The metafunction propounded by Halliday is one of the most important parts of functional grammar.This paper is to analyzehow the interpersonal function, such as mood and modality,is embodied in the listening materials and illustrate it by corresponding examples,with the intention of using functional grammar to guide the teaching of English listening and improving the students’listening skills.     

浅谈英语写作教学中的问题与对策

英语写作能力是交际能力的重要体现之一。英语写作通过词汇、组句、成篇及逻辑思维等方面考察学生运用语言的能力。在实际写作教学活动中，普遍存在一个“学生下笔难，下笔千言，漏洞百出”的问题。其原因在于语言基础知识薄弱和写作技巧欠缺。不断加强语言基础知识和写作技巧的学习与训练是逐步培养和提高书面语言表达能力的有效途径。     

基于层次分析法的工程兵维修部（分）队野战维修保障能力评估

 野战条件下,工程兵维修部（分）队维修保障能力对恢复工程兵部队战斗力起到至关重要的作用。本文将影响维修保障能力诸多因素分为动态和静态两类,选取静态因素作为重点研究对象,采用层次分析法对影响维修保障能力的因素进行分析和特征量提取,通过分类比较建立起一套影响维修保障能力因素的指标体系。在此基础上,运用Matlab软件计算出层次内指标权重,并对结果进行一致性检验。最后通过加权相乘,对层次内所有影响因素进行排序,用量化形式表现各影响因素之间重要程度,为工程兵维修部（分）队有目的、有重点地完善和提高野战维修保障能力提供标准和依据,同时为同类部队之间的维修保障能力比较提供了一种简单有效的方法。     

上海崇明东滩鸟类自然保护区生态环境及有效管理评价

选取多样性、自然性、代表性等7指标对上海崇明东滩鸟类自然保护区进行了生态环境状况评价，通过指标等级化处理，利用德尔菲法（Delphi）进行专家咨询，结合实际调查算出崇明东滩鸟类自然保护区生态环境综合指数为70.93，依据保护区评价标准可知崇明东滩自然保护区生态环境质量一般；同时选取管理条件、管理措施、科研基础、管理成效等13项指标对自然保护区进行有效管理评价，通过专家咨询和实际调查，计算出自然保护区有效管理综合指数为51.25，依据保护区评价标准可知崇明东滩自然保护区有效管理水平一般，最后，针对评价结果，分析了影响保护区生态环境质量和有效管理成效的关键因子及保护区目前所面临的主要问题，并提出了相应的对策和建议。     

基于网络层次分析法的乙炔生产厂应急救援能力评价

乙炔生产厂应急救援能力评价指标之间关系复杂,各指标相互影响,使得常规的评价方法难以准确地体现这种错综复杂的关系,无法对乙炔生产厂应急救援能力进行准确的评估。为了提高乙炔生产厂应急救援能力并提供一种更加合理的评价方法,按照事故发生的时间顺序,结合乙炔生产厂应急救援的特点,基于网络层次分析法从事故预防、应急准备、应急响应、灾后恢复4个方面建立了评价指标体系,将复杂问题系统化,解决了各指标下一层内部指标间以及相邻层指标间相互影响的问题,保证了评价的客观性。以某乙炔有限责任公司为例进行计算分析,基于网络层次分析法（ANP）建立了乙炔生产厂应急救援能力评估指标体系模型,运用超级决策（SD）软件和专家打分法实现了对各评价指标的赋权和评分,最终得到该公司的应急救援能力为"良"。依据评价结果,提出通过提高预防事故能力、完善灾后恢复相关工作和增强灾后重建能力来提高该企业应急救援能力的对策。     

基于项目驱动的工程教育本科教学实践研究简

针对当前我国工业的深入发展,大学对于人才的培养应从国内外企业对工程师的需求出发,应能促进企业技术升级及转型,增强企业的技术革新和产品创新能力.以国际一流制造业对工程师的标准为导向、工程教育认证为目标,从技术能力、沟通协调能力、文档编写能力、个人职业素养方面进行全方面的培养及考核.立足于天津工业大学的实际情况,根据学生的不同基础及特点,以国家、省部级等纵向项目培养学生的理论纵深及分析能力;以企业及公司等横向项目来培养学生的成本分析、严谨严格、产品创新能力;以各类竞赛项目来培养学生的专业应用能力;以学校及学院级的导向性项目来培养学生的参与性和专业热情,从而构建出目前本科学生的工程教育实践发展之路.     

对建立课堂教学评价系统的探讨

针对目前课堂评价系统存在的问题,制定不同的评教标准分类评教,设置科学合理的评分比例,同行评教注重专业性、严肃性、及时性、可操作性,学生评教注重全面性和可比性,更好地为教学服务。     

机械原理多媒体课件的制作及应用

机械原理研究的对象为机构和机器 ,具有理论与工程实际相结合 ,抽象思维与形象思维相结合的特点。为了培养学生的形象思维能力 ,增加学生的感性认识 ,激发学生的学习兴趣 ,研制了一套多媒体课件 ,其特点是人机界面友好 ,安装、使用简便 ,且教师根据需要可在教师工作台上添加教学内容 ,这是多媒体课件制作上的一个创新 ,在教学中取得了很好的使用效果     

文山学院学生网上评教存在的问题及原因调查分析

通过问卷调查发现,影响学生网上有效评教的主要原因有：学生的评教态度、师生间的亲疏关系、课程类型和教师自身的因素等,提出从加大评教活动的宣传力度,科学构建评价指标体系,科学组织评教活动,营造评教过程中和谐平等的师生关系,理性看待学生评教结果等方面完善学生网上评教制度,提高评教工作效率,保证教学质量监控工作科学有效地进行。