关键词： 土木工程材料   新材料和实验技术   虚拟现实技术  

摘要： 我国土木工程基础设施的大力建设带动了新型土木工程材料及工艺的迅速发展。当前“土木工程材料”课程存在教学内容陈旧,新材料、新技术、新工艺的发展更新缓慢的问题,导致学生对建材试验课程的学习兴趣不高、实际的教学效果不佳等问题。基于新工科发展背景,融合OBE理念,从五个方面提出了若干改革创新举措:将新型土木工程材料和实验技术与教学内容有机结合,延伸和丰富教学内容,真正让学生动起来、忙起来;将专业设计大赛和大学生创新创业项目融入实验课程中,着力提升学生分析和解决工程问题的能力;将虚拟现实等信息化技术应用到实验课程之中,有效解决部分学生参与度不高的现状,最终实现培养新工科背景下实践和创新型人才的目的。

关键词： 运输系统规划与设计   虚拟现实技术   新工科   创新能力培养  

摘要： 当前课程培养模式难以适应新工科人才创新能力培养的新需求,并且存在学生学习积极性不高、实践动手与创新能力,尤其是解决实际问题的能力不强的问题。基于此,本文提出基于新工科创新能力培养的教学目标,对“运输系统规划与设计”课程教学模式和考核模式进行改革研究,搭建基于虚拟现实技术的虚拟设计+漫游平台,实现理论学习与实际应用的衔接。在此基础上,采用项目教学充分利用课内外时间,做好互动和拓展训练,满足新工科创新人才培养的需要。然后结合教师的动态技术跟进和指导尺度的把握,做好科学素质和创造性思维的同步培养。最终实现基于能力的成绩测评,重视创造过程的开展,推动学生主动地学好该课程。

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.