Tinysex and gender trouble [Internet world]

Most of us, most of the time, neatly fit ourselves and others into one of two mutually exclusive social categories. We are either men or women; we cannot be both at once. This is something we take for granted. In a discussion of ethnography in the Internet world, the author examines how that world has created forms of human interaction that cannot rely on such taken-for-granted knowledge. When a person is online, one's gender identity must be actively constructed and presented within an interaction. The author's discussion of gender-swapping and virtual cross-dressing suggest ways in which computer technologies can provide unique opportunities for exploring how we enact our gender identities and what we require of others as they enact theirs. A word on acronyms. Multi-User Domains (MUDs) are Internet locations, virtual spaces in which participants interact anonymously. Most are text-based, but some use graphical icons. They are computer programs organized around different themes, games and interests but they share the characteristic that MUD players participate through the process of creating themselves within the community activity. Lambda MOO is a specific MUD (MOO is “MUD Object oriented”)     

支撑云-群-端协同调度的多能园区虚拟电厂:研发与应用

虚拟电厂技术挖掘并利用了各类分布式资源的灵活调节能力,是提高电网安全水平、降低用户用能成本、促进新能源消纳的重要措施.在能源互联网环境下,虚拟电厂面临分布式资源主体众多且特性各异、不确定性强、各地电网需求多样化等技术挑战.文中基于云边协同的信息架构,设计了云?群?端递阶协同的多能虚拟电厂调度技术框架,研究并提出了面向特...     

序列偶在盲多用户检测中的应用

与以往扩频通信系统不同,本文用序列偶代替Gold码应用于扩频通信系统。随着CDMA通信系统的应用范围越来越广泛,目前可用的地址码的数量有限并且码长均有限,这样就给实际工程带来很大的不便。本文首先介绍了序列偶的概念和几种重要的盲多用户检测方法。再将满足一定条件的序列偶应用于盲多用户检测中,通过理论分析和实验仿真,证明了序列偶应用于扩频通信系统的可行性。因此序列偶能很好的弥补目前扩频码存在的数量有限的缺陷,作为现有扩频码的有效补充。     

基于增强现实的灌浆协同决策可视化研究北大核心CSCD

灌浆工程具有隐蔽性、专业性等特点,为提升灌浆质量,需要采用会商等手段进行灌浆协同决策。然而当前会商采用二维图纸或三维虚拟场景进行协同分析,缺乏物体纵深距离的真实空间维度,存在沉浸式交互不佳且决策信息共享不及时等问题。针对上述问题,本文提出基于增强现实的灌浆协同决策可视化方法,基于灌浆三维信息模型,以视觉惯性里程计技术为基础,实现虚拟模型与真实场景的融合与沉浸式交互分析;采用基于云端通信的状态同步法、锚点转移法和Vuforia增强图像识别技术,实现灌浆协同决策信息的三维沉浸式可视化共享。工程实例分析结果表明,本文提出的方法能够实现灌浆决策信息的沉浸式交互查询与跨区域协同决策,为灌浆过程控制提供了新思路。     

A multiuser virtual-reality environment for a tele-operated laboratory

In engineering studies, concepts taught through lectures are often complemented by laboratory experimentation. This contribution presents a collaborative virtual environment for a tele-operated laboratory. Students have access to the tele-operated laboratory via the Internet from anywhere at any time. They control the experiments exclusively with their standard Web browser; no additional software is needed. The collaborative environment allows the experimentation in a team. Group members are able to interact and discuss the results of their work. A real collaboration, such as in local experimentation, is possible. The tele-operated laboratory is based on a client/server architecture, which is implemented in the Java programming language.     

3D Product Display Based on Inventor Animation Design

With the rapid development of internet technology, some innovative fashion product are increasingly showed in the way of three-dimensional virtual display. Taking fashion jewelry as an example, the virtual 3D display method of product is studied by Inventor which is parametric 3D design software for efficient modeling and animation developed by the Autodesk Company. By discussing the methods of part feature creation and assembly design, the real simulation of the product is carried out. Three-dimensional animation techniques, such as fade animation, components animation and camera animation are used to depict product features and animation effects.     

国家电网分布式协同仿真联合反事故演习平台

中国特高压互联电网电气联系紧密、整体性增强等新特点迫切需要建设国家电网分布式协同仿真联合反事故演习平台以支撑国家、区域及各省电力调度控制中心（简称国分省调）调控人员协同管理运行特高压电网技能的培训与演习的需求。以实现国分省级电网调度员培训仿真系统的广域互联为目标,在智能电网调度控制系统系列标准基础上,设计了演习平台的整体框架,包括设计原则、系统框架及应用流程,提出了交互分布式协同仿真运行支撑、联合教案分布式协同制作、多级电网分布式协同仿真以及分布式教员支持等一体化协同仿真关键技术,并结合国家电网联合反事故演习平台工程予以整体研制、实施和应用验证。应用效果表明,所研发的成果能够准确地模拟特高压交直流电网正常、异常及故障工况下的运行状态,为国分省调调控人员提供逼真的特高压电网联合反事故演习环境,有效提高受训人员协同运行管理特大电网的能力。     

现代CAD技术在电器中的应用

介绍了先进制造技术对CAD技术发展的影响、现代CAD技术的形成和发展以及在电器中的应用。现代CAD是现代制造技术的核心技术，其主要发展方向是使现代设计实现集成化、网络化和智能化。由此引出并行设计、协同设计和虚拟设计的新思想。     

现代CAD技术在电器中的应用(续)

介绍了先进制造技术对CAD技术发展的影响，现代CAD技术的形成和发展以及在电器中的应用，现代CAD是现代制造技术的核心技术，其主要发展方向是使现代设计实现集成化，网络化和智能化，由此引出并行设计，协同设计和虚拟设计的新思想。     

A web-based remote interactive laboratory for Internetworking education

A Web-based remote interactive laboratory (RIL) developed to deliver Internetworking laboratory experience to geographically remote graduate students is presented in this paper. The onsite Internetworking program employs hands-on laboratories in a group setting that correlates with the constructivist and collaborative pedagogical approach. This paper discusses the pedagogical and technical considerations that influence the design and implementation of the remote laboratory environment given the constraints of the special hardware and learning outcomes of the program. For wide-ranging usability, the remote Internetworking (INWK) laboratory uses de facto networking standards and commercial and broad-band Internet connectivity to ensure real-time secure interaction with equipment. A four-tier role architecture consisting of faculty, local facilitators, remote facilitators, and students has been determined appropriate to maintain academic integrity and ensure good quality of interaction with the remote laboratory. A survey employing a five-point scale has been devised to measure the usability of the remote access INWK laboratory.     

智能变电站二次系统综合仿真培训平台设计和研制

针对智能变电站二次系统各专业培训的新需求,设计并研制了面向变电站二次系统多专业的智能变电站二次系统综合仿真培训平台。采用数字仿真和物理仿真相结合的混合仿真模式,并通过将数字仿真平台上产生的录波文件在物理仿真平台中进行数字化回放,实现了2套不同形式的仿真培训模式的有机结合。提出一种基于通用平台的继电保护数字仿真技术,构建了智能变电站数字化实时仿真培训环境。基于多态技术,在实时态和培训态环境下同时实现了智能变电站变电运行操作和二次检修维护操作的仿真培训。基于SCD智能装置输出数据集的分层次的图形化二次虚回路设计和虚端子连接及比较技术,实现了智能变电站二次虚回路和虚端子连接的可视化的设计培训。满足智能变电站设计专业的培训需求。     

Development of a Web-Based Control Laboratory for Automation Technicians: The Three-Tank System

This paper introduces a Web-based control laboratory for experimentation on a nonlinear multiple-input-multiple-output (MIMO) system: the three-tank plant. Using this application, automation technician students can learn in a practical way many fundamental aspects of control processes. The client-side of the virtual laboratory has been developed using the programming support provided by Easy Java Simulations (EJS), an open-source tool for teachers with limited programming skills who want to create Java applications and applets. The lab has been integrated in the collaborative Web-based experimentation environment eMersion which provides more flexibility for the students performing the laboratory experiments.     

Design of a Modular and Low-Latency Virtual-Environment Platform for Applications in Motor Adaptation Research, Neurological Disorders, and Neurorehabilitation

We have developed a modular virtual environment platform for movement research and rehabilitation. The system uses several networked computers running Linux to share computation. An electromagnetic tracker is the primary position tracker and both a head-mounted display and stereo goggles are used for visual display. System software is written in a combination of C++, JAVA, and Python and makes considerable use of the open-source toolkits VR Juggler and OpenSceneGraph. These are integrated with additional toolkits and custom modules written specifically for the study of motor control and rehabilitation. The system performs well with low latency, accurate calibration, and a consistently high graphics update rate. Preliminary applications have confirmed that the system is a powerful tool for sensory-motor investigation and has considerable potential as a tool for neurorehabilitation. Its primary advantage over other systems is its ability to utilize different display and input devices, and run a range of experiments simply by changing XML configuration files. Additionally, the use of powerful open-source libraries provides a feature-rich foundation for advanced features and low-cost duplication. Further work and experiments are needed to extend, further validate, and fully utilize this platform.     

Virtual reality-enhanced stroke rehabilitation

A personal computer (PC)-based desktop virtual reality (VR) system was developed for rehabilitating hand function in stroke patients. The system uses two input devices, a CyberGlove and a Rutgers Master II-ND (RMII) force feedback glove, allowing user interaction with a virtual environment. This consists of four rehabilitation routines, each designed to exercise one specific parameter of hand movement: range, speed, fractionation or strength. The use of performance-based target levels is designed to increase patient motivation and individualize exercise difficulty to a patient's current state. Pilot clinical trials have been performed using the above system combined with noncomputer tasks, such as pegboard insertion or tracing of 2D patterns. Three chronic stroke patients used this rehabilitation protocol daily for two weeks. Objective measurements showed that each patient showed improvement on most of the hand parameters over the course of the training. Subjective evaluation by the patients was also positive. This technical report focuses on this newly developed technology for VR rehabilitation     

A virtual environment for protective relaying evaluation and testing

Protective relaying is a fundamental discipline of power system engineering. At Georgia Tech, we offer three courses that cover protective relaying: an undergraduate course that devotes one-third of the semester on relaying, a graduate course entitled "Power System Protection," and a three-and-a-half-day short course for practicing engineers. To maximize student understanding and training on the concepts, theory, and technology associated with protective relaying, we have developed a number of educational tools, all wrapped in a virtual environment. The virtual environment includes a) a power system simulator, b) a simulator of instrumentation for protective relaying with visualization and animation modules, c) specific protective relay models with visualization and animation modules, and d) interfaces to hardware so that testing of actual relaying equipment can be performed. We refer to this set of software as the "virtual power system." The virtual power system permits the in-depth coverage of the protective relaying concepts in minimum time and maximizes student understanding. The tool is not used in a passive way. Indeed, the students actively participate with well-designed projects such as a) design and implementation of multifunctional relays, b) relay testing for specific disturbances, etc. The paper describes the virtual power system organization and "engines," such as solver, visualization, and animation of protective relays, etc. It also discusses the utilization of this tool in the courses via specific application examples and student assignments.     

超高压架空输电铁塔组立虚拟施工技术研究

虚拟施工是对实际施工过程的计算机模拟和预演, 是现实施工系统在虚拟环境下的映射。在对三维建模与显示、施工方案布局、动画仿真与控制、方案优化与设备监控等关键技术进行深入研究的基础上, 自主开发了基于三维图形引擎的铁塔组立虚拟施工系统。借助该系统用户可以在可视化的虚拟施工系统平台上, 组织设计、评价确定铁塔吊装方案, 并对方案进行交底或预演。     

电网协同设计信息系统的建设与应用简

为解决电网设计工作中有关基础数据收资与共享、协同设计、设计流程的标准化、多场景精细化设计等问题,研发了一套涵盖设计工程管理、勘测及基础数据管理、设计标准管理及多场景输电线路设计功能的电网协同设计信息系统。以数据资源管理为主线,服务于设计院的可行性研究、初步设计阶段的快速选线、路径优化、杆塔定位、站址规划的日常工作,通过工程管理、版本管理实现各专业协同办公。在北京、山西、内蒙古等多个设计院具体工程的实施应用表明,该系统能够有效提高电网设计工作的协同水平、管理水平和工作效率,具有较好的实用性。     

基于资源特性的虚拟电厂“双层-三阶段”运行策略设计

为了实现虚拟电厂内外层协调运行,提出了考虑资源特性的虚拟电厂“双层-三阶段”运行策略设计方法。首先,设计了虚拟电厂的运行框架,分析了虚拟电厂各类资源特性,构建了合作博弈定价模型;其次,将虚拟电厂划分为电厂型虚拟电厂与负荷型虚拟电厂,分别设计了内层和外层运行策略;最后,结合算例分析表明了通过虚拟电厂内外层协同优化能够降低虚拟电厂运行成本。     

基于MapX的电力系统GIS人机交互设计

应用基于地理信息系统（GIS）的电力系统可视化界面开发方法,使用MapInfo软件,设计绘制包括基础地理层、发电厂层、变电站层、220 kV输电线路层、500 kV输电线路层的GIS图。在此基础上,实现基于MapX的电力系统GIS人机交互基本功能及高级功能,基本功能包括空间功能、查询功能、详细数据展示功能、专题图功能、鹰眼图功能、等高线图功能、3D可视化功能,高级功能包括关联多屏显示功能、自适应调节功能。在整个系统中,基本功能可以较为简单地进行实现;高级功能突破了简单的二次开发限制,针对性更强,且具备了更专业的人机交互功能。依据电力系统中不同的使用特点和需求,还可以在此基础上开发出更多的其他高级功能。在对电网数据进行管理、分析和维护时具有显著的效果。     

LED室内照明仿真平台的研究与实现

针对LED室内照明的发展现状,提出了使用Web3D技术开发一种三维交互式的LED室内照明虚拟仿真平台。该平台依托于LED协同商务平台网站,打破了当前网上仅使用平面图的方式展示LED灯具以及灯光效果的模式,将三维场景漫游和三维产品展示技术应用到LED照明中。通过3DSMAX来构建室内场景以及灯具的模型,利用VIRTOOLS来实现用户与平台之间的交互。该系统可以最大限度地使用户了解所需购买灯具的三维模型以及灯具的真实效果,提高客户购买产品的满意度。