查询词典 virtual reality

The main contents and results of research in this paper are shown as following: It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equation MultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished. Then introduced the theory of Large Area Database Management and realized the Large area database management; In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.

论文的主要研究工作和成果包括以下一些内容：建立虚拟对象的运动模型是构造一个虚拟系统的关键所在，建立的运动模型准确与否直接关系仿真对象模拟的逼真度，由于本仿真系统的虚拟对象是潜艇，所以对潜艇的运动模型进行了研究，给出潜艇空间六自由度运动方程；利用MultiGen-Paradigm公司的Creator建模软件完成虚拟海洋环境中个实体模型建模和三维海底地形模型的建模；然后介绍了大地形数据库管理(LADBM，Large Area Database Management)技术的基本原理，实现大地形数据库管理；在三维场景仿真中，使用Vega驱动软件进行软件开发，完成了三维场景空间的建立，主要包括动态和静态海洋的仿真、海浪、船首波浪和传尾尾迹的实现，灯光和材质的使用，云和雾的模拟等。

Based on the virtual simulation environment of virtual prototype simulation analytical software ADAMS, the reliability based virtual experimental research was developed on the broadly applied crank - slider mechanism.

基于虚拟样机仿真分析软件ADAMS的虚拟仿真环境，对应用广泛的曲柄滑块机构开展基于可靠性的虚拟实验研究。

While based on the companions model and self-capacity model, selecting companions and allying companions can be realized and agent federations which can be nested are built to support the cooperation in the virtual enterprise. The tasks and activities in the virtual enterprise can be implemented through the activity model in the agent. In the virtual enterprises, we discuss the cooperation and negotiation deeply.

其中，虚拟企业的合作是基于虚拟企业过程模型进行的，通过任务、活动间各种约束关系的满足和实现，触发、执行了逻辑情景的演算过程，实现了合作伙伴间的合作，即将适当的信息在适当的时间传送给适当的人。

The paper first presents a linear timeconsuming model of data access through the analysis of the virtual storage principle and then gives a decision-making method for data placement and access path selection problem. In the development of this method, the concept of equivalent of virtual storage cost is defined to evaluate the data placement cost in the FC-SAN virtual storage environment.

首先通过分析虚拟存储原理提出了一个数据访问耗时的线性模型；然后，就数据放置和访问路径选择提出了一个决策方法；并在进一步探讨这一方法的过程中，定义了&虚拟存储代价当量&的概念，用以评价FC-SAN虚拟存储环境中的数据放置的代价，从而为评价以及如何选择数据放置和访问路径提供了一种定量的手段。

With amalgamation of Virtual Reality and CSCW techniques, the concept of Virtual Environment is put forward.

虚拟现实技术与CSCW技术相融合，产生了虚拟环境的概念。

The world is animated cartoon of the virtual world, the lens design of virtual reality is filming machine lens design.

动画片的世界是虚拟的世界，动画片的镜头设计也是虚拟实拍摄机的镜头设计。

The researches in Virtual human technology involve computer graphics, kinematics and dynamics, multi-functional perception, artificial intelligence, virtual reality, etc.

虚拟人技术研究涉及到计算机图形学、运动学与动力学、多功能感知、人工智能、虚拟现实等多个学科，是一个交叉应用学科。

Virtual Endoscopy is an application of virtual reality in modern medicine.

虚拟内窥镜技术是虚拟现实技术在现代医学中的应用。

Moreover, with the rapid development of computer technologies and virtual reality, WebGIS map publish system has been injected new vitality; in the situation of real 3D GIS development immaturely, the study of two-dimensional electronic maps and virtual scene integrated WebGIS system has some practical significance.

此外，计算机图形学及虚拟现实技术的快速发展，给WebGIS地图发布系统注入了新的活力，在目前真三维GIS系统发展不成熟的情况下，研究二维电子地图与虚拟场景集成的WebGIS应用系统具有一定的实际意义。

The Virtual Walk-through technology is an important content of Virtual Reality technology, it was developed in architecture, junketing, game, aviation, spaceflight、medicine fastly.

虚拟漫游技术是虚拟现实技术的重要分支，在建筑、旅游、游戏、航空航天、医学等多种行业发展很快。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。