对象/属性/事件(OPE)机制在分布式虚拟环境中的应用

在分析了ＤＩＳ和ＨＬＡ的优缺点后，介绍了ＯＰＥ的原理及实现；并讨论了ＯＰＥ在自行研制的小型分布式虚拟现实系统开发工具软件包中的应用，及整个系统的结构设计和实现方法。该系统具有扩展性好，通信冗余少和延迟小等特点。最后给出了系统实现的开发平台。     

虚拟现实技术在化学中的应用——虚拟化学实验室

通过对虚拟现实技术的介绍，从理论上和可行性上对虚拟化学实验室进行了大体上地勾勒，介绍了将虚拟现实、神经智能、药物的定量构效关系与化学科学之间所组成的网上化学实验室的结构、特点及其应用方向。     

基于虚拟仪器的信号分析与处理系统开发

传统的信号测试系统体积庞大、功能单一、精度低,本文设计出一套基于虚拟仪器的信号处理和分析系统,通过修改信号的类型和参数,就可生动直观地显示出不同的数据、图像和分析处理的结果。该系统已用于现场测试,教学,效果良好。     

Spatial sound resolution of an interpolated HRIR library

The paper evaluates the human directional resolution of virtual sound sources synthesised with the aid of a generalised head related impulse response (HRIR) library, i.e., an HRIR library measured using a dummy head and torso. The original HRIR set is first expanded using linear interpolation, and then directional resolution measurements are performed for playback through headphones. These results are compared to the results obtained using loudspeakers as sound sources in an anechoic chamber. Directional resolution is the ability of listeners to distinguish two closely-spaced sound sources alternately playing the same signal. Experiments show that two sound sources with insufficient spacing appear as a single source to the listener. Directional resolution for small azimuth changes is relatively high for both virtual and real sound sources. Most test subjects have no problem resolving two sound sources only 5° apart. Compared to real sound sources, detecting changes in elevation of virtual sound sources is much less accurate, which may be the main drawback of using a generalised HRIR library.     

A large scale virtual screen of DprE1

Tuberculosis continues to plague the world with the World Health Organization estimating that about one third of the world's population is infected. Due to the emergence of MDR and XDR strains of TB, the need for novel therapeutics has become increasing urgent. Herein we report the results of a virtual screen of 4.1 million compounds against a promising drug target, DrpE1. The virtual compounds were obtained from the Zinc docking site and screened using the molecular docking program, AutoDock Vina. The computational hits have led to the identification of several promising lead compounds.     

虚拟企业的跨文化管理研究

跨文化管理是虚拟企业面临的一个重要问题.本文主要分析虚拟企业跨文化管理的特点及在管理实践中存在的问题,并从管理理念、管理手段、管理效果三方面提出实现虚拟企业跨文化管理的主要措施。     

H-start for exclusively heteronuclear NMR spectroscopy: The case of intrinsically disordered proteins

Here, we present a series of exclusively heteronuclear multidimensional NMR experiments, based on ¹³C direct detection, which exploit the ¹H polarization as a starting source to increase the signal-to-noise ratio. This contributes to make this spectroscopy more useful and usable. Examples are reported for a suitable system such as securin, an intrinsically disordered protein of 22 kDa.     

一种基于虚拟技术的新型测量材料导热系数的方法

针对稳态平板法测量材料导热系数存在的缺点,介绍了一种新的测量方法——瞬时平面热带法,并用虚拟仪器采集数据、数据处理及数据显示。     

Analysis of luminance distribution uniformity in CAVE-type virtual reality systems

In recent years, many scientific and industrial centres in the world developed a virtual reality systems or laboratories. The effect of user “immersion” into virtual reality in such systems is largely dependent on optical properties of the system. In this paper, problems of luminance distribution uniformity in CAVE-type virtual reality systems are analyzed. For better characterization of CAVE luminance nonuniformity corner and edge CAVE nonuniformity were introduced. Based on described CAVE-type virtual reality laboratory, named Immersive 3D Visualization Lab (I3DVL) just opened at the Gdansk University of Technology, luminance nonuniformity of the system is evaluated and discussed. Data collection of luminance distribution allows for software compensation of intensity distribution of individual images projected onto the screen (luminance non-uniformity minimization) in the further research.     

大数据云中心虚拟机资源高效分配应用研究

为降低大数据云中心的能量消耗和实现资源的优化配置,提出一种虚拟机资源高效分配策略。 提出的策略对选定的特征上具备相似性任务分组的聚类进行定义,将各组任务映射到定制化的高效虚拟机类型。其高效指的是以最低限度的资源损耗成功执行任务。虚拟机的相关参数为核数量、内存量和存储量。虚拟机分配基于日志中提取的历史数据,并以任务的使用模式为基础。提出的资源分配策略以任务的实际资源使用量为基础,实现了能源消耗的降低。实验结果表明：不同聚类任务下,提出的虚拟机资源分配策略可以大幅节约能源消耗,具有较低的平均任务拒绝次数。