虚拟现实技术训练应用研究综述

虚拟现实技术训练应用是科技发展的必须趋势,是和平时期提高部队实战能力的主要手段。通过对当前虚拟现实在部队军事训练应用方面进行研究,并采取"分析归纳、分类合并、中外对比、问题剖析、多措并举"的方式,发现虚拟现实技术训练应用存在技术引进应用不够,训练模拟器应用处于低层次徘徊阶段,且实战针对性不强等问题,提出研判外军作战行动、吸收借鉴经验做法、引领创新技术应用等做法,从而实现从"跟跑-并跑-领跑"的过渡。     

基于城市形象传播的吉祥物创新设计研究

目的 针对目前国内城市吉祥物形象直线的传播方式以及造型设计雷同，缺乏个性化表达等问题,创新城市吉祥物设计，推动城市经济文化产业向前发展。方法 深入发掘城市内涵，并且将城市地域特征与历史文化相结合，让吉祥物成为一个城市的代表。在造型设计上注重赋予吉祥物灵魂，注重五官的传神与内心状态的传达，利用三维表现方法，借助VR技术，在吉祥物与观众之间搭建网上交流平台，多角度多层次地将直线的吉祥物形象传播形式转变成互动循环传播模式。通过这一创新理念设计出的吉祥物既具备鲜明的个性特征，又能传达城市文化精神内涵。结论 只有创新吉祥物造型设计与设计传播方式，才能使吉祥物具备独特的吸引力，更好地被大众接受，从侧面有效地传播城市文化理念，推动城市经济发展，提升城市在国际上的知名度。     

全景视频技术及其在医疗教学方面的应用

介绍了全景视频以及全景视频的技术流程,包括采集、处理、传输、播放等过程。设计了一套基于全景视频技术的医疗教学系统,并结合医疗教学特点设计了普通课堂场景视频展示、实验室环境场景全景视频展示和手机客户端场景展示3种实际场景下的医疗教学应用。将全景视频应用于医疗教学,实现了一种各角度全方位身临其境的视频展示方式,用户可以通过操纵软件全方位观看实验过程,也可以佩戴虚拟现实设备全方位观看实验过程,形成身临其境的效果,提高了教学质量,节约了教学时间。     

基于VR沉浸式认知的设计基础教学改革构思与实践

首先回顾西安建筑科技大学风景园林设计基础课程的教学改革历程、建设目标与教学特点,在反思中提出当前教学中仍存在的问题和虚拟现实（VR）技术介入教学改革的基本构思,即在大一上下两学期基础设计课中,将VR技术与“原理认知—空间设计—表达呈现”全过程进行融合,结合以四季为时间线索串联的“城市与景观”“风景与自然”两学期课程内容,建立对应的“感知与认知”“空间与设计”两大VR资源模块,针对相应的教学环节提出具体的介入途径。其次,针对设计基础课,提出应更突出VR技术在可视化、直观化、沉浸式教学方面的辅助功能,将抽象原理、不可见的过程、多尺度、时间性与动态性等通过VR转化为可以促进学生自我主导式学习的教学形式,在此基础上适当发挥VR在三维空间塑造与沉浸式体验方面的优势,通过“空间探索—空间解析—空间设计”的渐进式训练,辅助空间设计教学。最后总结西安建筑科技大学VR技术介入多年级设计系列课教学的三大支撑平台和发展思路,对VR和AR技术介入专业教学提出未来可以延伸的方向。     

VR-Electricians: Immersive storytelling for attracting students to the electrical construction industry

Although it is projected to have significant employment growth in the electrical construction industry, there are not enough young people to join the workforce. It is indispensable for the future of work in construction to explore emerging technologies and effectively attract the younger generation to the construction industry. This paper explores the innovative use of 360-degree immersive environments powered by virtual electricians to tell success stories of the electrical construction trades on the field (VR-Electricians) and understand how such an immersive storytelling approach can attract young people to join the industry. A pretest-posttest design was used for the VR-Electricians assessment. VR-Electricians was found to significantly enhance several aspects of students’ attitude towards the electrical construction industry. VR-Electricians was also rated as a highly usable and easy-to-use system. The outcomes of this study provide construction researchers and practitioners an understanding of how immersive storytelling can be used as a powerful technology-mediated method for attracting students to their field.     

Live delivery of neurosurgical operating theater experience in virtual reality

A system for assisting in microneurosurgical training and for delivering interactive mixed reality surgical experience live was developed and experimented in hospital premises. An interactive experience from the neurosurgical operating theater was presented together with associated medical content on virtual reality eyewear of remote users. Details of the stereoscopic 360‐degree capture, surgery imaging equipment, signal delivery, and display systems are presented, and the presence experience and the visual quality questionnaire results are discussed. The users reported positive scores on the questionnaire on topics related to the user experience achieved in the trial.     

艺术体操训练中虚拟现实技术的应用探讨

本课题构建了一种基于虚拟现实技术的艺术体操仿真系统，该仿真系统包括艺术体操人体运动跟踪模块、模型变形模块、虚拟现实场景仿真模块几部分构成。     

论《天佑孩童》中美国黑人中产阶级女性的“傀化”情感

美国诺贝尔文学奖得主托妮·莫里森在其绝笔小说《天佑孩童》中首次立足当代,聚焦美国黑人中产阶级女性的“傀化”情感,折射出黑人、女性和白人工人阶级等多个群体的现实境遇,从多角度反映美国社会问题。美国黑人中产阶级女性的“傀化”情感是其在种族主义、性别主义和消费主义多重压迫下沦为“她者”后的情感反应。“傀化”情感既反映了美国权力运作与意识形态控制之下黑人的集体生存状态,也激发受压迫群体另辟蹊径,走出困境。莫里森深刻揭示了美国走向社会大分裂的种种迹象,并对消弭社会裂痕、建立情感共同体发出前瞻性思考。     

基于OSG的三维地籍信息系统设计与实现

随着虚拟现实技术的不断完善发展,其应用的行业也越来越多。本文通过阐述三维地籍的发展和VR系统构建的关键技术,介绍了基于OSG技术构建实用三维地籍信息系统的技术路线、系统功能,并设计开发了相应的系统,展示系统实现的效果。     

Till which pressures the fluid phase EOS models might stay reliable?

This paper examines the performance of three fluid phase equations of state in predicting the available very high-pressure data of n-pentane, n-hexane, cyclohexane, toluene, dichloromethane, chloroform and methanol. It is assumed that the key for success at such pressures is establishing the appropriate interrelation between the densities of saturated liquids and the imaginary infinity pressure states. The recently proposed EOS that combines SAFT with the cohesive term of cubic EOS (SAFT + Cubic) most likely satisfies this criterion. According to this model, the saturated liquid densities at T_r = 0.4 are approximately 2.1 ± 0.1 times smaller than the densities predicted at the infinity pressure. With this ratio SAFT + Cubic yields reliable density estimations as far as the substances remain liquid (stable or metastable) in all the considered cases. Its pressure limit for accurate predictions of the auxiliary properties such as sound velocities and bulk moduli appear to be lower, typically around 1 GPa.