血管收缩效能测定和评价虚拟仿真实验项目的建设

针对传统医学机能实验教学模式手段单一、教学资源不足、大型综合实验成功率低、教学效果欠佳等问题,将虚拟仿真技术应用于医学机能实验教学,设计开发了血管收缩效能测定和评价虚拟仿真实验.通过该中英文双语版虚拟仿真实验,学生可突破时空限制,利用碎片化时间学习实体实验无法大规模开展的医学机能实验内容,验证所学理论知识,掌握实验操作...     

基于虚拟仪器的FPGA实验平台设计

将虚拟仪器技术与FPGA(现场可编门阵列)学生实验结合,设计了远程FPGA实验平台。通过该平台,学生可以在远程客户端计算机上完成编程并将程序烧录在位于实验室的FPGA实验箱上,并且通过网页访问LabVIEW,观察及控制虚拟FPGA面板,对实验进行验证。     

Reconstruction of a Collaborative Mathematical Learning Process

The study focused on the interaction between two secondary school students while they were working on computerized mathematical investigation tasks related to probability theory. The aim was to establish how such interaction helped the students to learn from one another, and how it may have hindered their learning process. The assumption was that interaction is beneficial for students if they can perform certain key activities, namely showing, explaining, justifying, and reconstructing their work. Both students attained mathematical level raising. However, the student who explained frequently and criticized himself attained more mathematical level raising than the student who did not explain her work frequently or criticize herself.     

圆柱壳体非线性分析关键技术研究

ANSYS是通用的、大型的有限元分析CAE软件,使用ANSYS软件可以求解静态和瞬态非线性问题.本文在分析了圆柱薄壳结构的特点、分类和应用的基础上,对圆柱壳体的稳定性进行了研究,建立了圆柱壳体非线性力学方程.在ANSYS平台下,对典型的圆柱壳体进行了仿真,为进一步深入研究圆柱壳体非线性问题提供了借鉴.     

任务驱动式电子商务教学模拟系统的设计

"任务驱动"教学法强调学生在真实场景中的任务驱动下,在探究完成任务或解决问题的过程中,在自主和协作的环境中,在讨论和会话的氛围中进行学习活动,最终达到使学生有效地实现对当前所学知识的意义建构的目的;电子商务教学模拟系统正是基于这一思想的探索与尝试,建立电子商务的网上学习、交流、测试的环境,学生通过具体操作来理解、掌握商务实践的方法、手段、技术要点,熟悉电子商务的运作流程;同时通过在线交流、自测、考试等形式检验学生对知识的掌握情况,力求使学生最终掌握这门新兴学科,能够运用所学的理论和方法构建一个符合需求的电子商务系统。     

Teaching bovine abdominal anatomy: Use of a haptic simulator

Traditional methods of teaching anatomy to undergraduate medical and veterinary students are being challenged and need to adapt to modern concerns and requirements. There is a move away from the use of cadavers to new technologies as a way of complementing the traditional approaches and addressing resource and ethical problems. Haptic (touch) technology, which allows the student to feel a 3D computer‐generated virtual environment, provides a novel way to address some of these challenges. To evaluate the practicalities and usefulness of a haptic simulator, first year veterinary students at the Royal Veterinary College, University of London, were taught basic bovine abdominal anatomy using a rectal palpation simulator: “The Haptic Cow.” Over two days, 186 students were taught in small groups and 184 provided feedback via a questionnaire. The results were positive; the majority of students considered that the simulator had been useful for appreciating both the feel and location of key internal anatomical structures, had helped with their understanding of bovine abdominal anatomy and 3D visualization, and the tutorial had been enjoyable. The students were mostly in favor of the small group tutorial format, but some requested more time on the simulator. The findings indicate that the haptic simulator is an engaging way of teaching bovine abdominal anatomy to a large number of students in an efficient manner without using cadavers, thereby addressing some of the current challenges in anatomy teaching. Anat Sci Educ 2: 280–285, 2009. © 2009 American Association of Anatomists     

基于蒙特卡罗模拟的不同聚合温度下的丙烯聚合动力学研究

在不考虑其他杂质参与聚合反应的情况下,并基于已有对丙烯聚合反应过程的普适化认识,提出了一个普适的丙烯聚合反应机理(基元反应).在已有的丙烯聚合反应机理基础上,为了证实该聚合反应过程总活性基是否满足“稳态假定”以及考察聚合反应温度对聚合过程的影响,采用蒙特卡罗模拟方法研究了传统Ziegler-Natta催化剂催化下的丙烯聚合动力学.模拟得到的总活性基数目在丙烯聚合初期快速增加到峰值,然后随聚合反应的进行保持恒定,证实了丙烯聚合过程中总活性基符合稳态假定.同时,模拟得到了聚合温度对丙烯聚合过程的转化率、分子量的影响.模拟结果表明:在聚合过程中,丙烯单体的消耗速率随聚合温度升高而增加;不同聚合温度下的数均聚合度峰值相同,但随温度增加,数均聚合度峰值来得早;随聚合温度增加,数均分子量减少,分子量分布变宽.     

EWB在《模拟电子技术》课件制作中的研究与应用

对于《模拟电子技术》传统教学存在的问题进行了讨论，指出计算机辅助教学的必要性，对EWB的功能进行了介绍，阐述只用POWERPOINT，AUTHORWARE，FLASH来制作课件的不足，并用研究和实践说明EWB在模拟电子课件中将发挥重要的作用。     

数字内容传输渠道对消费者行为的影响研究

根据个人理性约束和激励相容约束,基于期望效用理论构造了数字内容消费者行为模型,运用计算机仿真技术分析了消费者的数字内容消费数量及其效用变化情况,研究了数字内容传输分发渠道对消费者行为的影响。研究结果表明：（1）在传统传输分发渠道下,数字内容价格对消费者数字内容消费数量及其效用影响显著,是影响消费者行为的重要因素;（2）在数字化网络传输分发渠道下,会员制收费模式的会员费直接影响消费者效用,按交易量收费模式通过数字内容消费数量间接影响消费者效用;（3）在双重传输分发渠道下,消费者效用和数字内容消费数量均高于上述传输分发渠道。综上可得,双重传输渠道更加符合消费者利益,为了体现消费者日益增强的影响力和主导权,数字内容供应商应该实施双重传输分发渠道策略。     

高耸结构的风荷载试验研究

南京奥体中心的观光塔为一高耸结构,其风荷载是必须考虑的问题之一.由于观光平台及观光塔本身形状的复杂性,建筑规范无法准确给出其风荷载,因此需要在风洞中进行测压测力试验,以测定观光塔整体及局部风载,获得风场数据.文章介绍了整个试验过程,并对试验结果进行分析,根据各风向角下的风压分布特征给出了结构抗风设计和考虑载人时的最不利风向角与最大风压值,可为观光塔结构强度设计、电梯间及观光平台的玻璃幕墙设计提供风荷载依据.