摘要： INTRODUCTION: Spatial orientation is considered an essential skill for autonomy and participation in a person's society, allowing its location in the environment. The alteration of this ability, called spatial disorientation, may be present at the beginning of the cognitive decline and progress to Alzheimer's disease, which makes its evaluation of great importance. There is no consensus in the literature regarding a reference standard test for the evaluation of spatial orientation, however recent studies suggest that virtual reality could be used for this purpose. However, whatever known to the authors, there are no immersive systems for assessing spatial orientation. Therefore, our research group developed a system called Spatial Orientation in Immersive Virtual Environment Maze Test (SOIVET-Maze) to assess spatial orientation. However, studies are needed to analyze whether the system really evaluates what is proposed, whether it is applicable and tolerable by the elderly population with and without mild cognitive impairment and, finally, whether its measures will be reliable and stable. OBJECTIVES: To analyze the criterion validity, test-retest reliability and stability, and applicability of the SOIVET-Maze system in elderly people with and without mild cognitive impairment. METHODS: Psychometric study of validation of convergent concurrent criterion, of transversal. Forty-three elderly people were included in the study, 24 with normal cognition, considered to have no complaints and no objective evidence, and 19 with mild cognitive impairment, with proven medical diagnosis, living in the city of Sao Paulo. The study was carried out at the Interdisciplinary Center for Interactive Technologies (CITI) of the Polytechnic School of Electrical Engineering at the University of Sao Paulo. For the sociodemographic and clinical characterization of the sample, the following were applied: screening questionnaire for discomfort before virtual reality; medical and demographic s

关键词： Virtual reality   Human-computer interaction   Unity3D   Remote welding  

摘要： Purpose This paper aims to improve the scene sense of a virtual scene, the welding model of a virtual reality system of riser automatic equipment was constructed using Unity3D and UG software, which mainly included a welding car, welding guide rail, welding power supply, virtual camera and other equipment and the model was rendered. Design/methodology/approach The human-computer interaction page and simulation test of the system was produced using the user interface GUI system for creating a human-computer interaction scene. The operator could capture the welding status of the physical equipment accurately and in real-time so the virtual reality technology was very suitable for the remote monitoring operation integrated with the welding system. Findings Human-computer interaction design and collision detection were realized. In addition, the system simulation experiment was accomplished. With the continuous improvement and development of virtual reality technology real-time virtual simulation and monitoring, technology will become the main development trend. Research limitations/implications Based on virtual reality, the monitoring system can capture the operation status of physical welding equipment in real-time and accurately, which is very suitable for remote monitoring operation integrated with the welding system and also conducive to improving the monitoring level of the welding process. Practical implications This technology is time-saving and money-saving, for the operators do not have to be in a real welding environment and therefore they can get away from dangerous places. Consequently, it can avoid unnecessary injuries and problems. Social implications This technology can replace people to enter the dangerous and extreme environment to carry out welding operation, so it becomes the most effective means of nuclear power plant maintenance, space structure construction and marine engineering construction. In addition, it is time-saving and money-saving. Origi

关键词： 数字媒体   虚拟现实技术   影视创作   普及应用  

摘要： 随着数字媒体技术发展的广阔性和多元性,虚拟现实技术在影视创作中的应用越来越受到人们重视.时下,虚拟现实技术已经拥有了相当大规模的产业链,对影视创作的助力有着非常可观的前景.文章着重分析虚拟现实技术在影视创作前期、后期和观影环节的具体应用,同时也对虚拟现实技术应用于影视创作所面临的挑战提出应对策略与改进想法,借此为虚拟现实技术与影视创作更好地融合发展提供参考.

关键词： 数字媒体   虚拟现实技术   影视创作   普及应用  

摘要： 随着数字媒体技术发展的广阔性和多元性,虚拟现实技术在影视创作中的应用越来越受到人们重视。时下,虚拟现实技术已经拥有了相当大规模的产业链,对影视创作的助力有着非常可观的前景。文章着重分析虚拟现实技术在影视创作前期、后期和观影环节的具体应用,同时也对虚拟现实技术应用于影视创作所面临的挑战提出应对策略与改进想法,借此为虚拟现实技术与影视创作更好地融合发展提供参考。

关键词： VR   虚拟现实   数字图书馆  

摘要： 近年来,虚拟现实(VR)技术在各行业获得了迅猛发展,尤其是进入民用行业以来,获得了爆发式的增长,受到广大用户的好评。文章认为在科技发展的浪潮里,公共图书馆需不断研究如何利用新技术新方法来为读者和图书馆本身服务,同时在应用这项技术的同时,亦可考虑制定自己的行业标准,并对该技术在虚拟阅读方面进行重新定义。

关键词： 虚拟现实技术   碰撞检测   CryEngine引擎   OBB树  

摘要： 本文针对CryEngine引擎中采用的碰撞检测进行了研究,改进了引擎结构,并在引擎中实现了在搭载Mesh组件进行OBB包围盒算法碰撞检测。在CryEngine引擎企业开发项目中构建OBB树,对原本使用的OBB算法进行改进提升,通过项目验证,证明了改进后的该算法在CryEngine引擎的有效使用,具有实际较好的可靠性和有效性,为后续项目开发提供了技术支持。

关键词： VR技术   新能源汽车   教学应用  

摘要： 如今,新能源汽车的发展非常迅猛。根据中国汽车工业协会的统计,当前新能源汽车产业的发展正处于中国汽车产业崛起的重要战略机遇期。基于此,本文首先分析了VR技术,随后从三个方面分析了VR技术在新能源汽车教学中的应用,以此来供相关人士交流参考。

关键词： 数字图书馆   虚拟现实技术   应用方案  

摘要： 虚拟现实技术利用计算机软件技术模拟现实环境,联合感知系统、三维技术、传感设备与计算机自动化技能促进多源信息的有机融合,建立交互式三维实景与仿真式实体系统,使用户能够体验环境,进行人机交互。随着时代的发展,虚拟现实技术被广泛应用于各行业,在此背景下,图书馆服务管理工作引入了虚拟现实技术。文章将简单介绍虚拟现实技术的基本定义,系统论述该技术在数字图书馆建设工作的应用价值,综合探讨虚拟现实技术在数字图书馆中的应用方案,为数字图书馆服务管理工作提供参考与借鉴。

关键词： Multisim   等效电阻   计算机仿真   电工电子   复杂电路  

摘要： 通过Multisim电子电路仿真软件可解决等效电阻的仿真求解问题,以田字形电阻电路为例,介绍了Multisim软件的基本操作流程及仿真方法,得到了田字形电路的等效电阻,以及在电路中的某个电阻发生变化时的等效电阻变化,为基于Multisim的等效电阻仿真求解提供参考。