关键词： virtual reality   wearable sensors   ergonomic analysis   cooperative workplace   human-robot physical interaction  

摘要： This work proposes a novel virtual reality system which makes use of wearable sensors for testing and validation of cooperative workplaces from the ergonomic point of view. The main objective is to show, in real time, the ergonomic evaluation based on a muscular activity analysis within the immersive virtual environment. The system comprises the following key elements: a robotic simulator for modeling the robot and the working environment;virtual reality devices for human immersion and interaction within the simulated environment;five surface electromyographic sensors;and one uniaxial accelerometer for measuring the human ergonomic status. The methodology comprises the following steps: firstly, the virtual environment is constructed with an associated immersive tutorial for the worker;secondly, an ergonomic toolbox is developed for muscular analysis. This analysis involves multiple ergonomic outputs: root mean square for each muscle, a global electromyographic score, and a synthetic index. They are all visualized in the immersive environment during the execution of the task. To test this methodology, experimental trials are conducted on a real use case in a human-robot cooperative workplace typical of the automotive industry. The results showed that the methodology can effectively be applied in the analysis of human-robot interaction, to endow the workers with self-awareness with respect to their physical conditions.

关键词： 计算机仿真  

ISBN: (纸本)9787230005616

摘要： 为了更好地对VR技术进行研究, 本书阐述了VR技术的定义及特征, 论述了其与艺术的关系及引发的视觉传达新观念的发展。VR技术既给各个行业带来了机遇和挑战, 也给各个行业带来了变革。本书着重研究了VR技术在教学、广告设计、建筑设计、环境设计、数字媒体设计、电影及农业领域的应用与发展, 对VR技术在各行业的应用现状进行了分析, 并分析了该技术今后的发展趋势, 希望能使这一技术的价值最大化。

关键词： 3D ultrasound   fetus   first trimester   organ development   reproducibility   virtual reality  

摘要： Introduction To investigate the reproducibility of first-trimester fetal organ volume measurements using three-dimensional (3D) ultrasound and a Virtual Reality system. Methods Within a population-based prospective cohort study, 3D ultrasound datasets of 25 first-trimester fetuses were collected by three sonographers. We used the V-scope application to perform Virtual Reality volume assessments of the fetal heart, lungs, and kidneys. All measurements were performed by two independent researchers. Results Intraobserver analyses for volume measurements of the fetal heart, lungs, and kidneys showed intraclass correlation coefficients >= 0.86, mean differences <= 8.3%, and coefficients of variation <= 22.8%. Interobserver analyses showed sufficient agreement for right lung volume measurements, but consistent measurement differences between observers for left lung, heart, and kidney volume measurements (p-values <0.05). Conclusion We observed sufficient intraobserver reproducibility, but overall suboptimal interobserver reproducibility for first-trimester fetal heart, lung, and kidney volume measurements using an innovative Virtual Reality approach. In the current stage, these measurements might be promising for the use in research settings. The reproducibility of the measurements might be further improved by novel post-processing algorithms.

关键词： 虚拟现实技术   建筑设计   技术应用  

摘要： 很多建筑设计人员都在探索能够提升自身专业技能和工作水平的有效途径,经过应用实践发现,开展建筑设计作业时,将虚拟现实技术合理应用其中,能够发挥提高建筑设计工作效率和提升设计质量的作用,基于此,笔者从多个角度入手,着重分析虚拟现实技术在建筑设计中的具体应用.

关键词： 矿山救护队   虚拟现实技术   训练活动   具体应用  

摘要： 在发生矿井等灾害事故的过程中,需要充分地发挥出矿山救护队的积极效用,使其能够及时应对抢救等工作.为了提高矿山救护队综合素质水平,需要采取定期形式设置真实类的模拟情景,借助应急演练的形式,使救护人员在实践阶段获得丰富实战经验,提高救护人员的专业技能水平.在使用虚拟现实技术的过程中,能够实现对矿山救护队应急训练设计模式的有效创新,基于三维可视化的设计方法,采取人机交互形式的虚拟环境,使救护队员能够在真实情景当中进行实践,保障矿山救护队训练活动的实效性.

关键词： 体验教育   传统村落   水峪村   虚拟现实技术  

摘要： 传统村落是传统中华农耕文化的传承载体和具象符号,是我国悠久的耕读文明溯源与传承的重要途径.但是,长期以来,随着工业化、城镇化和商业化的多重挑战和冲击,传统村落不断遭受"建设性、开发性、旅游性"破坏,传统村落如何进行活态发展的问题亟待解决.文章分析了传统村落"颓废"的发展趋势及体验教育视角下传统村落的市场前景,并以水峪村为例,通过对其价值进行挖掘和评估提出了开发路径.

关键词： 虚拟现实技术   高校   思想政治教育  

摘要： 随着当今世界改革的不断深入和科学技术向纵深领域的发展,以及思想政治教育向各个领域的渗透和深化,思想政治教育工作变得越来越专业化,并且向着更加先进的方向不断前进.基于此,分析传统教育手段在思想政治教育过程中的局限性,阐述虚拟现实技术应用于思想政治教育过程的可能性和重要意义,以促进虚拟现实技术与思想政治教育的融合发展.

关键词： 传统村落保护   虚拟现实技术   应用  

摘要： 我国传统村落具有极高的历史价值,而近些年来许多传统村落的开发度相对较低,受到各方因素的影响导致当地居民的生活条件较差,由于收入相对较低,致使我国许多传统村落逐渐处于荒废的状态,这对保护我国优秀的传统文化产生不利影响.近年来,国家也加大了对传统村落的保护和研究,将现代化虚拟信息技术应用到村落保护中,不仅能够保护我国的传统村落,还能让更多的游客了解到我国传统村落的文化历史,解决当下传统村落无宅可进、无事可听的现状,推动我国传统村落旅游业发展的同时也在保护我国传统文化.