面向课程组资源的辅助教学网站的研究与设计

笔者在调研当前高校信息化教学现状时发现信息化教学中存在着诸多问题,其中在校大学生的针对性课程资源建设成为发展信息化教学的瓶颈,严重阻碍教学信息化。由此,笔者大胆提出研究和建设面向课程组资源的辅助教学系统,以解决此瓶颈并深化高校信息化教学。     

电子类专业计算机网络课程实践教学体系

针对电子类专业人才对网络技术的新需求,以该专业的网络应用为背景,从培养具有创新精神的电子类应用型人才角度出发,提出一个电子类专业计算机网络课程的实践教学体系,以提高教学效果和学生的综合应用能力。     

基于职业岗位能力的教学案例设计过程研究

案例教学作为一种教学方法,早已广泛应用于医学、工商管理、计算机等各个专业领域中。尤其在计算机领域,案例的选择是否恰当尤为重要,是关系到案例教学是否能取得预期成效的关键因素。本文就审计案例教学中教学案例的设计过程进行了探讨。提出依据变量互补性标准来选择和设计教学案例,引导学生体验实验的过程,完善自身的认知结构,给学生足够的时间,真正实现自主学习。     

Enhancing graph production skills via programmed instruction: An experimental analysis of the effect of guided-practice on data-based graph production

A computer-based graphing simulator used tutorial modules to teach 61 undergraduate college students how to create cumulative graphs from sets of data. One group was required to complete the steps of constructing an appropriate graph within a computer-provided graphical workspace, while the other group did not have graphic construction requirements during the tutorial, but could optionally construct the graph within the workspace. Following the tutorial instruction, each student was given three blank sheets of graph paper, a pencil, two sets of data, and the requirement of physically constructing graphs based on the given data. Students who were required to actively complete graph construction steps during their tutorial subsequently produced graphs from the new data that were significantly better than those students who had the option of practicing in the workspace. Results suggest that the presence of response contingencies within the graphical workspace increases subsequent graph construction performance. The efficiencies possible with electronic instruction are discussed.     

基于可疑行为识别的PE病毒检测方法

针对当前PE病毒难以防范及查杀的现象,对PE病毒关键技术进行分析,提取病毒典型特征的可疑行为,在此基础上提出一种Windows平台下的静态检测方法。该方法在对程序反编译处理的基础上,以指令序列与控制流图的分析为行为识别依据,完成基于可疑行为识别的病毒检测方法的设计。实验结果证明,该检测方法能有效检测混淆变换病毒。     

Avalon总线的音频编解码控制器IP核设计

介绍了基于Avalon总线的WM8731音频编解码控制器IP核的设计,包括音频数据访问接口模块和Avalon-MM接口模块等,并利用SOPC技术将其封装成可重用的IP核.自定义IP核的使用,有效降低了该芯片的开发难度,同时也使系统易于扩展和升级,具有较高的灵活性.在Quartus Ⅱ和ModelSim下使用VHDL语言完成了控制器的设计、仿真以及Nios Ⅱ系统的构建,并通过SignalTap Ⅱ逻辑分析仪进行了硬件测试.仿真和测试结果表明,该控制器满足WM8731各项时序要求.     

一种面向维文网站的动态天气图文信息服务支持系统

维吾尔文地理信息服务的研究与应用的匮乏,使维吾尔用户很难享受基于本民族语言的地理信息服务。该文以新疆动态天气图文信息服务为例,提出了一种面向维文网站的WebGIS服务解决方案。方案首先通过集成免费Google Maps API地图服务和实时免费Yahoo Weather RSS天气信息,制作新疆县域维吾尔文天气信息服务模块;其次,将该模块作为引用对象,根据用户对动态天气图文信息服务框架大小和位置的设定,个性化地嵌入到任意维吾尔文大众网站中,使更广大的维吾尔用户享受WebGIS带来的信息服务。该研究推动了WebGIS在维吾尔语语境的新应用,为新疆各族群众提供了便捷动态天气图文信息服务。     

基于GSM的远程车载防盗报警系统设计

提出了一种基于SIM300的车载无线防盗报警装置。该方案主要由单片机和SIM300模块两部分组成,借助成熟的GSM移动网络,以直观的中文短消息或电话形式进行无线控制,将控制与监测实现了智能化、便捷化及远程化。     

基于SMS远程监控系统

SMS远程监控系统利用GSM网络的SMS(手机短信业务)和低成本的硬件电路构建家居设备的远程监控。在GSM覆盖的地域里,用户可以发送短消息来控制连接到系统的家电设备的开关状态。同样,系统也可以向用户告知其工作状态。用户可以设定特殊短信来监视家中是否发生了特定事件。将GSM/GPRS MODEM主控系统与无线模块相结合,系统构建了一个一主多从的控制网络,从而实现智能化家居监控网络。     

Timing Analysis for Instruction Caches

This paper contributes a comprehensive study of a framework to bound worst-case instruction cache performance for caches with arbitrary levels of associativity. The framework is formally introduced, operationally described and its correctness is shown. Results of incorporating instruction cache predictions within pipeline simulation show that timing predictions for set-associative caches remain just as tight as predictions for direct-mapped caches. The low cache simulation overhead allows interactive use of the analysis tool and scales well with increasing associativity.The approach taken is based on a data-flow specification of the problem and provides another step toward worst-case execution time prediction of contemporary architectures and its use in schedulability analysis for hard real-time systems.