统计软件SPSS在试卷再测信度计算中的应用

试卷再测信度是进行试题评价的一项重要指标,它是指考试能否稳定反应学生实际水平的程度。本文中笔者介绍了统计软件SPSS在试卷再测信度计算中的应用方法,为教师在考试后的试卷分析工作提供了一定的参考。     

软件设计师应考策略分析

在对2007—2009年6份《软件设计师》考试试卷进行系统分析基础上,将软件设计师考试的考点、热点提出,并提出了在考试中的系列答题技巧。     

基于PHP的在线单选题考试系统的实现

考试是教学中的一个不可或缺的环节,很多教师在期末的时候都会忙着出试卷、打印试卷、组织考试和批改试卷,工作量比较大。鉴于此,基于PHP和MySQL开发了一个在线单选题考试的系统,希望对相关教师能有所帮助。     

遗传算法的组卷策略研究

通过组卷来决定试卷的题量、试卷的知识点分布、试卷类型及考试时间的多少;网络组卷系统是实现考试规范化、公平化、合理化的重要途径。运用遗传算法对考试中的自动化组卷进行了研究。     

遗传算法的组卷策略研究

通过组卷来决定试卷的题量、试卷的知识点分布、试卷类型及考试时间的多少;网络组卷系统是实现考试规范化、公平化、合理化的重要途径。运用遗传算法对考试中的自动化组卷进行了研究。     

计算机软件专业技术资格和水平考试备考指南

一年一度的中国计算机软件专业技术资格与水平考试越来越临近了,如何备考一定是广大考生最为关心的问题.参加软件考试除了必须根据考试大纲和指定用书进行全面复习外,还应详细了解试卷的结构、题型、重点和难度等情况.本文根据笔者对软件考试大纲和指定用书的理解和多年来参与软件考试考前辅导和阅卷工作的体会,参照全国软件考试办公室网上公布的信息,分别对各个考试级别作一简单介绍,以飨读者.     

基于SPSS的大学计算机基础考试试卷分析

试卷分析包括成绩分析和试卷质量分析两部分。该文以西南林学院2007-2008级的消防工程专业的大学计算机基础考试为例,采用SPSS软件对考试进行了各种定量分析,通过难度、区分度和信度等指标,说明大学计算机基础考试的必要性和考试的成绩和质量等问题。该方法能为高校大学计算机基础课程教学质量的评价提供部分依据。     

备战水平考试要诀

程序员证书在求职过程中是绝对有份量的,但要顺利通过软件水平考试不是一个很容易的事。如果你想顺利通过软件水平考试,必须做好考前准备工作。在参加软件考试之前除了根据考试大纲要求的范围进行复习备考以外,还应对你所报考级别的试卷的结构、题型和难度分布等情况有一个初     

基于校园网的试卷生成与网络考试系统的实现

考试试卷生成与网络考试系统是采用先进的程序设计语言和网络技术开发,从而实现试题库的管理、考试试卷出题、考试试卷的审批、考试试卷的考题类型及分值分配,使传统考试试卷生成和考试的过程都集成在了本系统之下,从而考试实现了信息化。     

“高中信息技术”网络考试系统的设计与开发

考试是教学过程中的一个重要评价环节,随着计算机技术和网络通信技术的不断发展,网络化考试逐渐成为一种重要的考试方式。网络考试系统可以充分发挥试题库的作用,方便教师及时、全面、均衡的组织试卷、批阅试卷以及分析考试的具体情况;具有公正性、安全性、准确性、灵活性、及时性以及方便性等特点。笔者以软件工程的思想和原则为指导,结合教学经验,针对高中信息技术这门课程,设计并开发了一套网络考试系统。     

战时血液保障组织资源优化的遗传算法模型

资源优化配置是战时血液保障组织系统系统中的一个重点,也是一个难点问题。本文在对传统算法模型在解决优化配置问题上的缺陷进行分析和研究的基础上,提出一个基于并行遗传算法的资源优化配置算法模型。考虑到血液保障组织系统系统中资源的特殊性,编码方式采用二进制编码,并行模型为粗粒度并行模型。该模型不但可以在血液全生命周期中的每个环节选1个或多个机构参加,而且不会遗漏任何一个可行的优化配置方案。最后通过具体实例以说明该模型的有效性。     

战时血液保障组织资源优化的遗传算法模型

资源优化配置是战时血液保障组织系统系统中的一个重点，也是一个难点问题。本文在对传统算法模型在解决优化配置问题上的缺陷进行分析和研究的基础上，提出一个基于并行遗传算法的资源优化配置算法模型。考虑到血液保障组织系统系统中资源的特殊性．编码方式采用二进制编码，并行模型为粗粒度并行模型。该模型不但可以在血液全生命周期中的每个环节选1个或多个机构参加，而且不会遗漏任何一个可行的优化配置方案。最后通过具体实例以说明该模型的有效性。     

A note on metric dimension and feedback in discrete time

The notions of a ∈-dimension and ∈-entropy were introduced into feedback theory of G. Zames (1976, 1979), who proposed them as measures of the complexity of identification and the effectiveness of feedback in reducing identification costs. The 1979 paper was concerned mainly with continuous-time systems, but also included a summary of discrete-time results which contained certain errata. The authors elaborate the discrete-time case, supply some omitted proofs, and correct the errata     

The Most Cited IEEE Software Articles

This paper investigates the most cited papers in IEEE Software over its 25 year history. I find that the most cited paper has 135 citations. Further, using the H-Index to determine how many papers to analyze, I find an H-Index of 35 for IEEE Software, without omitting self citations, and an H-Index of 33 if self-citations are omitted. The percentage decrease between the total number of citations to the 35 and 33 papers respectively, was less than the percent decrease in the H-Index when self citations were omitted.     

Preconditioning of the p-version of the finite element method

The p-version finite element method for linear, second-order elliptic equations in an arbitrary, sufficiently smooth (incl. polygonal), bounded domain is studied in the framework of the Domain Decomposition (DD) method. Two types of square reference elements are used with coordinate functions given by the products of the integrated Legendre polynomials. Estimates for the condition numbers and some useful inequalities are given. We consider preconditioning of the problems arising on subdomains and of the Schur complement, as well as the derivation and analysis of the DD preconditioner for the entire system. This is done for a class of curvilinear finite elements. We obtain several DD preconditioners for which the generalized condition numbers vary from ((log p)³) to (1).

This paper is based on [19–21,27]. We have omitted most of the proofs in order to shorten it and have described instead what could be done as well as outlined some additional ideas. The full proofs omitted can in most cases be found in [19,20,27].     

Inertia effect on deformation of viscoelastic capsules in microscale flows

The deformation of capsules (i.e., cells, bacterial) in microscale flows plays an important role in biofluid flows such as blood flow in capillaries and cell manipulation in microfluidics. In previous studies on capsule deformation in microscale flows, the inertia effect was often assumed to be negligible and thus omitted. However, this assumption may not reflect real situations, as indicated by recent studies of inertial microfluidics. As such, we aimed to study the inertia effect on capsule deformation in microscale flows and to determine under which conditions this effect may be omitted. Using a collocated grid projection scheme, we developed a finite difference-front tracking method, and investigated the deformation of viscoelastic capsules in microscale flows for Reynolds number (Re) ranging from 0.01 to 10 as seen in vitro and in vivo. The results showed that the transient and steady-state deformation of capsules was significantly affected by inertia, and the flow structure varied considerably when Re was varied from 0.1 to 10. No significant changes were found for Re ranging from 0.01 to 0.1, and hence the inertia effect on capsule deformation in the microscale flows can be omitted when Re is less than 0.1. These findings improve the current understanding of the mechanism underlying cell movement in capillaries and can be applied to optimize the conditions for cell manipulation and separation in microfluidic devices.     

A criterion of constructive identifiability and complete controllability of linear stationary systems of neutral type

For linear stationary systems of neutral type, parametric criteria of constructive indentifiability and complete controllability are proved and constructive methods for solving these problems are presented. This paper is a continuation of work [1], where constructive solutions to the problem of complete controllability and identifiability were given for the case of a characteristic quasi-polynomial of the delayed type and the corresponding literature was presented; therefore, the historical notes concerning the problems studied are omitted in this paper.     

Inserting injection operations to denotational specifications

In describing denotational semantics of programming languages, injection operations into sum domains are conventionally omitted for the sake of brevity. This in turn leads to difficulties for semantic processing systems which accept denotational specifications as input and mechanically calculate them for debugging the semantics. This paper describes an algorithm for inserting injection operations to denotational specifications as part of the typechecking process.     

Degenerative structures that inhibit the emergence of communities of practice: a case study of knowledge management in the British Council

Abstract.  This paper presents the British Council's knowledge management strategy. It outlines how, as part of this strategy, the organization attempted to engender communities of practice among a strategically significant group spread across the 110 countries in which the organization operates. Using a case study of this group, the paper explores 'degenerative structures' that impact on the ability to engender communities of practice and, through consideration of issues of individualization and risk, highlights a series of paradoxes that inhibited this organization's attempt to move from a 'hub-and-spoke' structure to become a networked organization in which communities of practice flourish.     

Design of cursive characters using arm dynamics as a generation mechanism

This paper considers the problem of reconstructing characters and words. As the basic tool for generating characters, we employ the 'dynamic font' method, where designing characters and words reduces to the design of three-dimensional motions of a virtual writing pen. Assuming that some standard characters and words are already designed, we propose a method for transforming their typefaces to the omitted running styles as seen in Japanese calligraphy. Since this is viewed as the problem of redesigning motions of the pen, we introduce a robotic arm with the pen in its hand and plan the hand motion by employing a minimum torque change model. Using a velocity linearized model of arm dynamics, we solve the associated optimization problem completely. The solution is given in compact form and the computational process is straightforward as well as stable numerically. Design examples show the usefulness of the proposed method.