共查询到20条相似文献，搜索用时 140 毫秒
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分布式虚拟现实(Distributed Vir-tual Reality,简称DVR),又称分布式虚拟环境、网络化虚拟现实、多用户虚拟环境等,它将分散在不同地域的虚拟现实系统通过网络联结起来,多个用户在共享的分布式虚拟环境中进行交互和协作,共同完成特定任务。随着各种高新科技的不断发展,应用于多个领域的分布式虚拟现实技术有了新的进展,本文从分布交互仿真的标准化与兼容性、合成自然环境的综合性、增强型的虚拟现实技术、分布式虚拟环境的实用化几个方面,讨论分布式虚拟环境的进展情况。分布交互仿真的标准化与兼容性军事应用是许多高新技术诞生和发展的… 相似文献
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分布式认知视角下的智能授导系统的设计与开发 总被引：3，自引：0，他引：3
分布式认知理论为认知交互和知识共享提供了一个综合模型。将分布式认知理论和分布式虚拟现实技术引入智能授导系统中,对创设逼真的认知情境、实现资源共享、促进个性化学习、提高教育效率等具有重要作用。本文探讨了分布式认知学习理论及其对系统设计的指导作用,提出了一种基于Agent技术和分布式虚拟环境的智能授导系统建构方法,重点研究了系统的体系结构、学习服务功能以及用户化身在虚拟环境中的交互模式,给出了利用Virtools技术实现系统的环境设计、网络通信和多用户交互行为的开发方法。 相似文献
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碰撞检测在机器人运动规划、虚拟环境、分布交互仿真中都起着重要作用．随着虚拟环境的几何复杂性及现代CPU并行处理能力的增加。为实现快速精确的碰撞检测,并行技术开始广泛地应用于碰撞检测算法中．本文介绍基于并行技术的碰撞检测算法,并着重对已使用的各种并行技术进行了分析比较． 相似文献
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新兴的多用户交互式触摸桌面技术,正逐渐成为CSCL研究关注的热点问题。多点触摸桌面技术与现有课堂的融合,引发了CSCL研究的视角转变:从关注虚拟环境中的交互,转向计算机支持的面对面人际交互。多点触摸桌面的技术特性表现出支持社会性交互、促进多用户协作、丰富学习者动手体验等教育适应性。对已有研究梳理发现,桌面技术在技术架构、课堂交互分析的理论框架两方面已取得可直接指导实践应用的成果。桌面技术教学实证研究的结论表明,该技术能有效支持真实课堂环境中的协作学习。未来此领域的研究焦点将集中在技术与教学两个方面:桌面技术与现有课堂信息技术系统协同工作机制;桌面技术支持下的教师教学组织能力与技术准备。 相似文献
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虚拟现实(VR)指的是借助多媒体技术和仿真技术,生成逼真和具有深度沉浸感的视、听、触觉一体化的虚拟环境,让用户在自然状态下和虚拟环境内的客体进行体验与交互,继而产生身临其境感受与体验的技术。近年来,该技术及其相关产品不断“落地”,在军事、工业、地理规划和房地产、文化以及医学领域都得到应用。 相似文献
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《实验室研究与探索》2015,(9)
将多通道人机交互、基于Web的虚拟现实和CAD技术相结合,构建了实时交互的虚拟环境,在网络环境下接入5DT Data Glove 5型数据手套。研究了虚拟手建模,对常用手势进行了分析和定义,采用手势识别技术,在有限的网络带宽条件下实现了虚拟环境中S195型柴油机的装配仿真,获得了更加自然直观的人机交互效果,提高了装配设计效率。 相似文献
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虚拟现实技术借助三维拟真场景和实时交互设备,通过数据收集与分析、动态内容生成等手段,可以为学生提供沉浸式、高度互动的考试体验。虚拟现实技术在教育考试中的应用价值主要在于促进考试公平、实现全面评估和改进教育教学;应用场域主要包括观察性考试、操作性考试、社会性考试和创新性考试;系统设计涵盖终端硬件、虚拟环境、交互、数据收集与处理、评估与反馈、网络与云端服务、安全与隐私、可扩展等8个子系统。为充分发挥虚拟现实技术在考试评价中的应用潜力,需要解决好经济与技术成本、技术成熟度与实用性、认证机制与评价标准、师生适应性、数据安全与隐私保护5个方面的重点问题。 相似文献
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实时重建增强虚境随着计算机虚拟现实和网络技术的不断发展和普及,传统的文字、图片、音频以及视频等交流媒介已经不能够满足人们的需求。远程沉浸(tele-immersion)系统通过网络向用户提供三维的虚拟现实应用环境,支持参与者在虚拟空间中自由漫游、沟通以及与虚拟环境进行虚实交互,它通过实时三维重建技术来增强虚拟环境(Augmented Virtual Environment),是一种新型的虚拟现实技术。远程沉浸系统通过实时的人体动作采集和远程再现技术将真实人的动作、表情、姿态、声音等在网络虚拟环境中同步再现出 相似文献
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虚拟现实是由计算机系统创建的一种虚拟环境,可以使人产生身临其境的感受,获得与环境交互的体验。将虚拟技术应用于职业教育领域,为专业的教学和实训带来了新的发展契机。 相似文献
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尚晓军 《实验室研究与探索》2008,27(5):56-58
定向运动(Orienteering)是指利用地图和指南针到达地图上所指示的各个点标,以最短时间到达所有点标者为胜的一项体育运动。设计基于网格技术的CAVE定向运动训练系统的目的是在室内构建虚拟训练场景,解决必须在山林、郊外训练的限制。介绍了CAVE的结构,设计出训练的硬件环境和软件系统。指出随着信息技术的不断发展,网格技术的应用,虚拟环境的资源共享和协同的实现,CAVE系统将普及和得到广泛应用。 相似文献
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The constructivist smart classroom learning environment is quickly emerging as an alternative classroom model that integrates active learning with advanced technology to improve learners’ socialization and achievement. This research examines pre-service teachers’ (n?=?462) preferences toward this learning environment, as well as the predictive association between connectedness and other critical learning environment features. All pre-service teachers had at least one semester of actual experience as participants learning in this environment. The data was collected through a questionnaire, and a series of linear regressions were conducted to examine the hypothesized relationships. Connectedness was positive and significantly associated with all smart classroom features examined: inquiry learning, student negotiation, reflective thinking, functional design, multiple sources, usefulness, and ease of use. Pre-service teachers who preferred constructivist smart classroom learning environments tended to be those in their first year of post-secondary education, as well as those with higher levels of technology self-efficacy. Gender was not observed to significantly influence preferences. The findings show connectedness to be a central and critical feature that can be used to cultivate more appropriate environments from the participants’ perspective. 相似文献
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This explanatory sequential mixed methods study examined how belonging perceptions, academic motivation, and engagement might mediate the relationship between academic contextual characteristics and achievement using structural equation modeling and qualitative follow-up interviews with college students from a large, Midwestern university. In the first, quantitative phase, two hypothesized models of student belonging and motivation were tested. In line with the Self-System Model of Classroom Support for Motivation (Connell and Wellborn, in: Gunnar and Sroufe (eds.) Minnesota Symposium on Child Psychology: Self-processes and Development, 1991), Model 1 hypothesized student belonging and motivation to be directly predicted by supportive classroom environment perceptions, and to directly predict engagement, which was hypothesized to predict achievement. Model 2 elaborated on the traditional self-system model and hypothesized student belonging to mediate the relationship between supportive classroom environment perceptions and student motivation. Quantitative findings revealed support for Model 2. Supportive classroom environment perceptions predicted students’ belonging beliefs, which in turn predicted students’ motivation, engagement, and achievement in the course. The second, follow-up qualitative phase suggested ways in which contextual characteristics might influence student belonging beliefs in the classroom. Taken together, the quantitative and qualitative data illustrate the influential role of classroom contextual characteristics on student outcomes, as well as the role student belonging plays in college student motivation and success. 相似文献
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文化取向的技术哲学为当代学习环境研究取得突破性进展提供了一条方法论上的新路向。它是以人与技术、人与文化的关系为本体,揭示人、技术与文化的本质联系。以此审视学习环境研究,可以看到其存在着突出学习环境的技术性、较少关注学习环境与学习者的内在关联,以及学习环境的"教育内容知识"缺失等问题。形成文化研究视角,进而形成"人—技术—文化"的整体性研究意识,并使用"贯一设计"方法,是当代学习环境研究的发展方向。 相似文献
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封闭环境与封闭环境控制技术（如建筑空间、飞机空间、工业低温空间）是指人工创造的,为人类生产生活服务的技术,其在现代社会中有不可替代的地位。舒适、节能、环保、健康的封闭环控技术只有在正确的哲学观念引领下才有可能实现人、外部环境、环控系统、封闭环境的和谐统一。天人和谐,以人为本,承认大自然的内在价值,认识自然美等哲学观念可以有效指导封闭环控技术的概念设计。在分析封闭空间环控,基本自然哲学观基础上,总结了同封闭空间环控有关的哲学思想,思想核心是天人统一。 相似文献
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The purpose of this study was to explore the influence of the four traditionally hypothesized sources of self-efficacy on learners' self-efficacy beliefs regarding learning mathematics in an asynchronous environment. The context of the study was a college algebra and trigonometry course offered in an asynchronous, technology-intensive emporium model at a large, public university in the southeastern United States. Participants (N = 99) completed surveys assessing their self-efficacy to learn mathematics in this environment as well as to assess their mastery experiences, vicarious experiences, social persuasion, and physiological state. Regression analysis indicated that in this environment, the most important factors are vicarious experiences, followed by affective/physiological influences. 相似文献
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学习环境承载着学习和学习者需求的表达。学习环境的设计需要在终端用户(学生)和社会利益之间、在传统和创新之间不断平衡。当前以传统学校为代表的学习环境设计忽视终端用户和个体用户的主观需求,过于重视社会效益等客观需求。未来教育的实现和发展需要依托创新型学习环境设计的理论与实践进步。基于智能技术支持,以学习环境重构为引领的学校变革是未来学校发展的必然方向。通过在学习环境中融入适切性智能技术能够平衡学习环境中的人类需求冲突。智能学习环境的需求平衡模型是智能学习环境设计的重要组成部分,包含两个部分:(1)智能学习环境需求平衡解析模型——解析智能技术与学习环境内需求冲突之间的主体关系;(2)需求平衡关注度计算模型——计算学习环境的需求平衡程度,以及智能技术干预之后的学习环境的平衡结果。虽然该模型尚属于“概念型公式”,还需要进一步完善,但其提出为智能时代的学习环境设计,以及学习环境中需求冲突的测量和解决提供了理论指导。 相似文献
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《Learning and individual differences》1999,11(2):187-212
This study investigates the relations among students' perceptions of the goal structure in the classroom, the self-report of coping strategies, and affect in school. We hypothesized that perceptions of a task goal structure would be associated with positive coping strategies, and in turn with positive affect; and that perceptions of an ability goal structure would be associated with projective coping, denial coping, and noncoping, and in turn with negative affect. In addition, the study takes note of hypothesized reciprocal relations among all these variables. Using a longitudinal design, surveys were administered to 880 students from 4 ethnically and economically diverse school districts in the fall and spring of the 5th grade in elementary school, and in the fall and spring of the 6th grade in middle school. The findings support the hypothesized relations as well as some reciprocal relations among these variables. The findings also indicate that perceptions of the classroom goal structure were more stable within an environment than across environments, thus supporting the role of environmental characteristics in these perceptions. 相似文献