Graduate Business Students Performance with Synchronous and Asynchronous Interaction e-Learning Methods

The effects of synchronous and asynchronous lectures and interaction formats were examined with graduate business students in on‐campus and off‐campus MBA programs. The dependent variables were scores on exams questions and learning styles and cognitive styles were used as covariates. The results indicated significant differences for discussion and lecture format and for on‐campus and off‐campus students. The results were discussed relative to learning in electronic environments.     

硫化过程的计算机控制与管理系统

本文利用可编程程序控制器PLC和IPC—610286工控微机组成一个二级集散控制系统,它成功地完成了橡胶厂内胎硫化机的生产和管理.下位机可以对 96台硫化机每一个时间进程进行严格的自动控制,以保证生产质量.上位机可方便显示和打印出班、日、月、年报表,为工厂实际生产,质量管理,计划调度,提供了有效工具,本系统已在工厂搬运,效果良好,并通过茂名市技术鉴定,获得了93年度的科技进步奖,值得推广应用.     

工科“计算方法”教学改革探索

“计算方法”是一门介绍科学计算的基础理论与基本方法的课程,对培养学生的科学计算能力、创新能力和解决实际问题的能力具有不可替代的作用。当前该课程设置和教学上存在学时偏少、重理论轻实践等问题。在教学中应根据学生的实际情况选择教学内容,适当地淡化数学理论的证明,重点要求学生掌握各种数值计算方法的逻辑结构与使用原理,培养和训练他们的数值近似计算能力,达到学以致用的目的。     

网格技术研究综述

本文简要介绍了网格的定义和特征，详细讨论了网格的体系结构、关键技术，并分析了当前的研究状况和应用前景。     

可信计算技术在网络安全中的应用

先介绍可信计算的相关组织及其发展,再介绍可信计算的概念,然后结合网络安全的需求,提出基于可信计算机的解决方案。     

基于组件的分布式管理信息系统

从信息系统设计的角度描述了多层分布系统结构与优势 ,提供了基于组件分布式管理信息系统原理和技术实施方案及其和其他技术方案的比较 ,展示了基于组件分布式管理信息系统良好的应用前景     

分布式实时操作系统中的综合化系统资源管理机制与策略

本文研究了构成分布式实时控制系统的关键———分布式实时操作系统的结构及内在机制, 介绍在分布式实时操作系统中采用综合化的系统资源管理机制管理系统资源, 满足分布式实时控制应用的特殊要求.     

Factors Affecting the Ability to Detect Spreadsheet Errors

The extensive computational and formatting capabilities of today's spreadsheets enable users to create sophisticated analytical models with professionally formatted outputs. But good‐looking reports can mask a host of input errors, formula mistakes, and computational problems. This article examines the subject of spreadsheet error detection in detail and describes an experiment designed to identify those factors influencing the error‐detection capabilities of a sample of spreadsheet users.     

Changing aims of computing education: a historical survey

Computing education has been an important and sometimes contentious issue ever since the advent of modern computing. Debates about computing education have closely followed job markets, technological development, academic interests, societal concerns, and changes in the perception of computing. The themes in computing education debates can be characterized by emergence and formation, standardization and organization, accommodation to change, and divergence. The focus of computing education has expanded outward from the computer to programming, algorithms, and information, as well as to the organizational, social, and cultural environment of computer systems.

This survey gives computing education researchers an overview of some of the central issues and disputes in computing education over the brief history of modern computing. The survey highlights the emergence of educational initiatives, concepts, joint efforts, and institutions of computing education, and outlines the relatively short history of computing education research. The survey is structured around four overlapping themes: computing education as technological training, as training for software development, as a central element for the field’s academic recognition, and as training for computational problem-solving in any domain of knowledge. Each theme has played a role throughout the history of modern computing, but their relative emphases have changed over the years.     

Systematic lossy error protection based on H.264/AVC redundant slices and flexible macroblock ordering

INTRODUCTION In typical video transmission systems, a video signal is compressed, and the resulting bit stream is transmitted over an error-prone channel. The errors may consist of symbol errors caused by fading, as observed for wireless channels, or packet erasures caused by congestion, as observed in the Internet. If a received video packet contains errors, then the portion of the video signal contained in the packet is lost and must be concealed. Error concealment schemes alone cannot …