Design and Experimental Characterization of Low‐Volume PM10/2.5/1.0 Trichotomous Sampler Inlet

This paper presents the development and laboratory evaluation of a PM10/2.5/1.0 trichotomous sampling inlet that consists of two main parts: a previously designed PM10 size‐selective inlet part and a PM2.5/1.0 two‐stage virtual impactor, which was newly fabricated and attached serially to the PM10 size selective inlet part. Particles are collected in three locations through the trichotomous sampling inlet to provide for not only particle concentration measurements of PM10, PM2.5 and PM1.0, but also those of PM2.5–10 and PM1.0–2.5.     

Construction of Realistic Scene in Virtual Turning Based on Global Illumination Model and Chip Simulation

With the rapid development of manufacturing technology, the traditional simulation of machining can not meet the people‘s need. Research on virtual machining environment is one of the key parts of virtual manufacturing technology. According to the features of virtual turning, this paper proposes a simplified Whitted lighting model based on analysis of Phong and other local illumination model. This model takes the material and roughness of workpiece into account to calculate the roughness coefficient D, geom...     

3-Dimensional Body Measurement Technology

3 - dimensional body measurement technology, the basis of developing high technology in industry, accelerates digital development of aplparel industry. This paper briefly introduces the history of 3 - dimensional body measurement technology, and recounts the principle and primary structure of some types of 3 - dimensional automatic body measurement system. With this understanding, it discusses prospect of 3 - dimensional CAD and virtual technology used in apparel industry.     

激光二极管自混合干涉和微振动的实验观测

介绍了利用LabView软件虚拟示波器和信号源,对激光二极管自混合干涉和微振动进行的实验观测.该实验可以作为本科低年级学生的综合设计实验.     

虚拟世界与艺术呈现的困境

虚拟世界是由人工智能、计算机图形学、人机接口技术、传感器技术和高度并行的实时计算技术等集成起来所生成的模拟世界。在当代社会,虚拟世界形成一个人类交流信息、知识、思想和情感的新型模式已深刻地影响并主导了人类生活。在这一境遇中,传统艺术观念受到前所未有的挑战,尤其是艺术精神的引申意义受到质疑和艺术的“乌托邦”色彩被淡化,导致艺术呈现走入困境。     

虚拟组织的技术创新分析

简述了虚拟组织创新机制的涵义，指出虚拟组织的技术创新是合作式创新模式，继而分析了这种创新模式的特点并介绍了几种常见的技术创新项目的选择方法，包括费用／效益比分析法和谛尔法。     

虚拟现实与电子商务的结合探讨

提出了一种虚拟现实应用于电子商务的新方法,这种方法能对目前电子商务普遍性问题进行解决,但虚拟技术正处在发展阶段,本方法还有很大的改进空间.     

MAX Script在建造大型虚拟现实场景中的应用

本文针对在建造大型虚拟现实场景中经常遇到的一些问题,如对大量对象进行选择、制作多个对象并确定它们在场景中的位置、对象的动画设置、在操作中定义用户自己的工作面板,阐述如何合理地使用3DS MAX Script脚本语言来提高工作效率。     

虚拟技术在实验教学中的应用

介绍了虚拟技术在实验教学改革中的作用与意义，探讨了电子信息系统实验教学改革的新思路与实现措施，并总结了实验教学改革的初步成果．     

Minkowski-type and Alexandrov-Type Theorems for Polyhedral Herissons

Classical H. Minkowski theorems on existence and uniqueness of convex polyhedra with prescribed directions and areas of faces as well as the well-known generalization of H. Minkowski uniqueness theorem due to A.D. Alexandrov are extended to a class of nonconvex polyhedra which are called polyhedral herissons and may be described as polyhedra with injective spherical image.