健美操训练中虚拟现实技术的应用探讨

文章分析了虚拟现实技术在健美操训练中的应用。首先对虚拟现实技术进行了分析,其具有沉浸性、交互性、构想性;然后阐述了基于虚拟现实的体育仿真系统的三维建模过程,由输入系统、输出系统、虚拟环境产生器三部分组成,最后阐述了虚拟体操训练系统在健美操训练中的应用。     

虚拟现实技术在非战争军事行动中的应用前景初探

虚拟现实技术蓬勃发展,为推动军事领域的发展提供了强劲动力。本文从非战争军事行动的训练环境构建、训练组织实施、训练成本开销三个方面阐述了目前存在的不足。从虚拟现实的沉浸性、交互性、想象性的技术特点和分布式配置的发展趋势,阐述了其对武装力量提高遂行非战争军事行动能力的突出优势。最后从六个方面探讨了虚拟现实技术在非战争军事行动训练中的应用前景。     

基于Vega和GL Studio的装备虚拟训练系统

虚拟现实技术综合了计算机仿真技术、多媒体技术、计算机视觉、图形学、传感器技术等技术,是在多种学科基础上发展起来的一门多学科交叉技术.分析了传统装备训练方法的优缺点,提出了采用虚拟现实技术提高装备训练的水平与效率.给出了虚拟训练系统的主要功能和组成,剖析了Vega平台和GL Studio的不足,选择了虚拟训练系统的开发平台,并对虚拟训练系统开发中的关键技术进行了阐述.     

基于VR的排球运动仿真辅助教材的研发

本文阐述了虚拟现实与体育系统仿真技术在排球教学．训练中的应用意义,以及排球技、战术的仿真方法和虚拟现实的设计与实现。     

基于交互式虚拟现实技术的定向越野训练系统研究

虚拟现实技术能够实现客观现实与虚拟空间的交互,文章基于交互式虚拟现实技术和定向越野流程,探讨了基于虚拟现实技术的定向越野训练系统的设计,基于Unity引擎,探索了该训练系统的构架和关键技术,并模拟了一个应用实例。基于理论和实例分析,对比了基于交互式虚拟现实技术的定向越野训练系统与传统训练系统的优势,并展望开发应用前景。     

虚拟现实技术及模拟训练在飞行教学中的应用探究

虚拟现实技术和模拟训练具有高度仿真的效果,将其应用于民航飞行训练教学当中,有利于帮助学生加快从理论过渡到实践的过渡.本文阐述了虚拟现实技术和模拟训练的类型及特征,分析了将其应用于飞行教学的优势,最后就虚拟现实技术及模拟训练在飞行教学中的具体应用进行了说明.     

虚拟现实技术在上肢康复机器人系统中的应用

虚拟现实技术是为康复训练提供重复的练习和成绩的反馈以及维持动机的重要技术手段。在对虚拟现实技术及机器人康复系统进行概述的基础上介绍了上肢康复机器人系统的原理及虚拟现实技术在上肢康复中的应用现状,最后设计了一种上肢康复机器人虚拟现实训练场景。     

虚拟现实技术在美军模拟训练中的应用现状及发展

通过对虚拟现实技术概念、特征及相关技术的介绍,引出了虚拟现实技术在各个领城尤其是军事领城的应用;然后从构建虚拟战场、单兵训练、异地同环境作战训练、军事指挥人员训练、提高指挥决策能力、武器装备研制及信息网络虚拟战等7个方面,重点介绍了虚拟现实技术在美军模拟训练中的应用现状;最后探讨了未来美军应用虚拟现实技术在模拟训练方面...     

虚拟现实技术在建筑景观设计中的应用研究

计算机技术是虚拟现实技术的发展基础,而虚拟现实技术在很大程度上促进了计算机技术的发展。本文阐述了虚拟现实技术的特点,分析和探讨了虚拟现实技术在建筑景观设计中的相关应用。     

虚拟现实技术在智能变电站运维培训系统中的应用

阐述智能变电站运维培训系统中的虚拟现实技术特点,关键技术,虚拟现实系统的应用,包括功能模块、三维场景模拟、交互工具。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.