基于“互联网+”虚拟技术的实验教学平台研究

以"互联网+"、虚拟技术视角,从技术层面搭建"互联网+"虚拟技术框架,提出虚拟实验室教学设计,然后使用虚拟化技术设计实验教学平台,包括实验虚拟交互、SPOC云、开放共享等。以校企共建实验室的理念和学科专业特点,搭建与企业接轨的仿真实验教学平台,包括3D仿真财务决策平台、财务与会计核心课程平台(含课程实验、综合实训、社会实践)、实验室管理平台等,并以该平台设计"互联网+"实验流程和财务会计相关专业案例分析。通过"互联网+"虚拟实验室构建在线教学共同体,并对该共同体进行优化设计,建立优化模型,以提升MOOC学习效率和实践效果。同时对国内外高校"以职业能力为导向"的教学模式设计进行了应用比较分析。最后总结虚拟实验室利用率的相关影响。     

VB平台下的虚拟实验软件开发研究

论述了基于VB平台实现的一种虚拟实验软件开发技术。从虚拟实验软件的目的和功能要求出发,设计了虚拟实验软件的架构。介绍了利用Visio绘制虚拟实验场景技术,阐述了虚拟实验软件中人机交互功能的实现方法。     

基于OSG的虚拟化学实验平台的构建设计

为了突破虚拟化学实验平台在智能和可扩展方面的限制,基于开源软件OSG(OpenSceneCraph)的技术特点,设计了三维虚拟化学实验平台.给出了利用OSG实现虚拟实验平台的框架、实现过程和功能结构,特别提供了对虚拟实验操作结果的模糊评价功能.研究了化学反应的实验现象和过程,提出了化学建模,建立了化学实验模型库;提出了化学实验的智能识别机制,综合判别仪器组合、实验药品、反应条件和与之匹配的方程式,实现了智能识别实验类型和渲染实验结果.最后通过一个实例结表明了该实验平台的可行性,并将该平台与其它平台进行比较,表明了该平台操作的灵活性和设计的优越性,为化学实验学习提供了及时、有效的支持.     

一个可编程虚拟实验平台的研究

本文分析了构建可编程虚拟实验平台的必要性和迫切性，提出了一个由集成开发环境、虚拟设备驱动程序和可编程虚拟设备组成的可编程虚拟实验平台模型，详细阐述了该模型的工作原理及其关键实现技术，并用此模型实现了接口虚拟实验平台的开发。实践表明，该平台完全可以满足可编程类实验教学的要求，特别适用于远程教学实验。     

基于私有云的虚拟实验平台的设计与实现

为解决当前高校计算机实验教学与科学研究在基础设施投入与满足用户需求等方面存在的缺陷,同时也能为国家863重大项目——"云计算测试与评估系统研制"提供基础试验使用,设计并实现基于私有云的虚拟实验平台。本文着重论述该平台的结构、功能的设计与实现策略,包括平台使用的核心云计算技术、网络和虚拟化策略、存储策略以及客户端的实现。实验结果表明,该平台功能完备、性能良好、实用有效。     

虚拟电子平台(EWB)在工程设计中的应用

简介了虚拟电子实验平台在工程设计中的应用实例,简述了以计算机为平台,用"虚拟仪器、虚拟元器件"实现工程设计中电子电路设计与测试仿真的操作过程,并给出了仿真测试结果.     

网络虚拟仿真实验平台的构建

随着虚拟技术的发展和仿真实验的需求,基于虚拟仿真技术的网络虚拟仿真实验平台构建的研究已经迫在眉睫。该文主要研究将虚拟仿真技术引入网络技术的实践教学之中,研究和设计虚拟仿真实验平台的框架结构、开发与应用、管理和评价,构建一种以体验式学习为指导的虚拟仿真实验平台。     

基于Virtools的虚拟实验室设计与实现

本文介绍了虚拟实验的特点及Virtools虚拟软件开发平台,提出基于Virtools平台开发虚拟实验室的基本思路,并将其应用于油液分析虚拟实验室的设计与实现.利用基于可视化场景的编程思想和丰富的"互动行为模块",有效提高了虚拟实验软件开发效率,增强了虚拟软件的实验仿真功能.     

基于Web的数字逻辑虚拟实验平台的设计与实现

详细论述了基于Internet的B／S模式的数字逻辑虚拟实验平台的设计，采用Java技术和面向对象技术实现该平台。利用Java Applet将虚拟平台嵌入网页中，用户通过浏览器就能够做实验。实验平台具有平台无关性、可扩展性、易于维护、交互性强等特点。     

微机接口虚拟实验系统的设计与实现

论述了微机接口虚拟实验系统的设计与实现,针对现在微机接口虚拟实验系统的不足,提出了相应的改进方案.给出了改进后的虚拟实验室结构,虚拟实验系统的模型及其工作原理,并介绍了实现的技术.系统为用户远程学习微机接口课程提供了良好的实验平台.     

Effects of interface and spatial ability on manipulation of virtual models in a STEM domain

Virtual models are increasingly employed in STEM education to foster learning about spatial phenomena. However, the roles of the computer interface and students’ cognitive abilities in moderating learning and performance with virtual models are not yet well understood. In two experiments students solved spatial organic chemistry problems using a virtual model system. Two aspects of the virtual model interface were manipulated: display dimensionality (stereoscopic vs. monoscopic displays) and the location of the hand-held device used to manipulate the virtual molecules (co-located with the visual display vs. displaced). The experimental task required participants to interpret the spatial structure of organic molecules and to manipulate the models to align them with orientations and configurations depicted by diagrams in Experiment 1 and three-dimensional models in Experiment 2. Co-locating the interaction device with the virtual image led to better performance in both experiments and stereoscopic viewing led to better performance in Experiment 2. The effect of co-location on performance was moderated by spatial ability in Experiment 1, and the effect of providing stereo viewing was moderated by spatial ability in Experiment 2. The results are in line with the ability-as-compensator hypothesis: participants with lower ability uniquely benefited from the treatment, while those with higher ability were not affected by stereo or co-location. The findings suggest that increased fidelity in a virtual model system may be one way of alleviating difficulties of low-spatial participants in learning spatially demanding content in STEM domains.     

基于Unity3D的虚拟化学智能课堂系统

针对传统化学教学的局限性及现有虚拟化学课堂的不足, 以Unity3D为基础设计并实现了虚拟化学智能课堂系统. 构建虚拟场景并导入Unity3D引擎, 通过C#脚本和粒子系统开发虚拟仿真实验; 为解决多人虚拟场景下权限分配问题, 实现了采用权限策略的智能辅助模块, 为不同学生分配不同权限并提供文字视频等提示功能; 通过S...     

Learning chemistry with VirtualLabs@Uma: a customizable 3D platform for new experimental protocols

In general, students of laboratory courses such as chemistry or biology are not able to replicate at home an experiment of a previously studied class since they lack infrastructure and material. With the possibility of providing multimedia and virtual reality environments on the Web, different applications and virtual laboratories have been proposed. However, most of the existing tools are not flexible enough or are domain-oriented, not supporting the addition of new tailor-made experiments when needed. This paper introduces a new platform for providing a customizable Virtual Laboratory, VirtualLabs@UMa. This application was proposed at University of Madeira in order to provide students with a flexible 3D virtual laboratory and teachers with a platform that can be customized to new experimental protocols. Therefore, chemistry teachers are able to create their own experimental protocols and propose them to their students. Moreover, students can be followed accordingly having their learning needs and difficulties fulfilled. VirtualLabs@UMa is a solution for motivating students and proposing an added value for complementing laboratory courses.     

Usability of concrete and virtual models in chemistry instruction

Virtual models are increasingly common in the modern science classroom, however little is known about the relative effectiveness of virtual and concrete models. We developed a virtual modeling system and tested the benefit of haptic cue fidelity, controlling for many other perceptual differences between concrete and virtual models. In two studies we directly compared performance of students using this virtual model and using concrete models for tasks in the domain of organic chemistry. Students used either virtual or concrete models to match diagrams of molecules or compare the structures of molecules represented by models and diagrams. The results indicated similar levels of accuracy and similar ratings of usability for virtual and concrete models but no effect of haptic cue fidelity. Greater efficiency with virtual models was observed when students matched diagrams and models, and this efficiency transferred to later use of concrete models. The efficiency benefit is attributed to interactive constraints of the hand-held interface to the virtual model, which helped students identify task-relevant information in the model and limited them to performing the most task-relevant interactions with the models.     

Exploring 3‐D virtual reality technology for spatial ability and chemistry achievement

We investigated the potential of Second Life^® (SL), a three‐dimensional (3‐D) virtual world, to enhance undergraduate students’ learning of a vital chemistry concept. A quasi‐experimental pre‐posttest control group design was used to conduct the study. A total of 387 participants completed three assignment activities either in SL or using two‐dimensional (2‐D) images. Students were administered an 11‐question chemistry achievement test and two measures of spatial ability (Purdue Visualization of Rotations Test, Card Rotations Test). Although analyses of covariance revealed no statistically significant differences between the two groups as a whole for any of the outcome measures, a subgroup analyses was conducted to decompose the relative impact of 3‐D virtual reality instruction within SL. We found that students classified as having poor spatial ability showed significantly greater improvement in understanding the 3‐D nature of molecules if they did relevant activities in a 3‐D virtual world than those students who only worked with 2‐D images.     

化学虚拟实验中序列化技术的应用与研究

虚拟实验室是教育领域的一个研究热点,其中实验的存储是系统一个十分重要的功能模块。文中以采用VC 和OpenGL技术开发的中学化学实验仿真系统(CVExperiment)为例,详细介绍比较复杂的对象的序列化,并根据对象之间的不同关系,提出不同的序列化方法。     

网络版有机化学演示实验CAI的设计与研制

采用3DS MAX、Adobe Premiere 7．0、Photoshop 6．01、Dreamweaver MX2004、Easy RealMedia Tools等软件,制作有代表性的有机化学演示实验的三维动画,并把相关素材编辑成多媒体教学软件。通过动画演示,生动形象地表达化学反应机理及演示实验的过程。用Dreamweave制作网络多媒体平台,将有机化学演示实验以网页的形式展现出来,使其能够自动播放。激发学生学习有机化学的兴趣,并提高教师的教学质量和效率。使老师避免授课时携带药品和实验仪器到课堂,也避免了由于实验在课堂上造成的环境污染。本软件包括30个课堂演示实验,分别对每个演示实验的操作过程,实验现象进行了形象逼真的模拟,便于同学学习和思考。该软件放置在Web服务器中即可进行网络教学,不受时间、地点等的限制。     

基于Internet的数字化样板房定制系统研究*

针对房地产业传统商务模式存在的问题以及人们对生活空间个性化的需求,提出了基于Internet的数字化样板房定制原型系统.以整合房地产相关产业,形成快捷有效、运作成本更低的产业流程和产业模式为目的,尝试利用电子商务、计算机网络、虚拟现实等技术改造传统房地产业.就新型房地产电子商务模式进行了探讨,搭建了原型系统的基本构架,并重点研究了可编程实时渲染等关键技术.对利用可编程实时渲染技术改进虚拟展示系统材质真实感表现方面取得了初步的研究成果.     

XML-based ISO9000 electronic document management system

Maintaining, customizing, sharing and reusing ISO9000 quality documents are essential for many organizations, especially those who work as virtual enterprises (VE). In a VE, the documents must be shared among organizations to take the full advantages of the recent Internet advances. XML is a new browser-based language standard. The purpose of this research is to explore the capabilities of XML and Internet technologies in electronic document management environments to comply with the ISO9000 requirements. This research has demonstrated several XML-enabled examples beneficial for the main functions of ISO9000 document management such as document creation, document change, document control and document access. The implemented examples demonstrate the effectiveness and efficiencies of document customizing, querying, hierarchical linking, tracking and reusing. The research results solve the ISO9000 document-related problems among working partners and facilitate document flow and information integration of value chain.     

个性化三维人体模型快速建模方法

采用模型重用的思想,通过输入21个人体测量学参数对标准人体模型进行编辑,实时获得相应体型的个性化三维人体模型．该方法使得编辑过程能够实时完成;生成的人体模型可以方便地驱动;精选的21个人体测量学参数覆盖了人体各处的细节,能够比较完整地描述人体的外形特征,满足对人体模型个性化的需求．