磁耦合谐振式无线电能传输的研究

磁耦合谐振式无线电能传输主要由发射模块、传输模块、接收模块三部分组成。当高频电源将具有谐振频率的交流电输入发射线圈后,发射线圈产生高频电磁场耦合到接收线圈并在接收线圈感应出电能,然后将其传输到负载。通过实验表明,论文所描述方案可行,传输距离能达到近1m,传输效率接近50%。     

自制电视伴音接收机

普通半导体收音机一般只能接收电台广播。若想接收电视伴音,只要自制一台电视伴音接收机就行了。使用时,将它靠近普通半导体收音机的磁性天线,让磁棒线圈感应到它的信号。这样,清晰的电视节目伴音就会从收音机喇叭中飘出了。     

基于电能谐振磁耦合无线供电的无线鼠标的设计与实施

本文利用电能的谐振磁耦合传输原理,设计了一种电能无线传输的电路,给无线鼠标提供工作电源。装置包括发射部分和接收部分,从计算机USB取电,通过高频逆变电路,将直流电转换为高频交流电,通过发射线圈发射出去。接收线圈接收电能,整流滤波后为鼠标供电。     

高速列车运行状态监测与故障诊断

本文采用光纤分布式振动测试方法对感应光缆获取的钢轨振动和列车运行状态信号进行采集和特征分析,从而检测出通过该区段列车的运行状态和安全性能,做到实时监测并预警,为列车的安全运行和维护提供技术保障。     

水泵检测中二种转速测量方法的探讨

本文从测试原理、传感器研制和测试中注意事项三方面探讨了在水泵检测中霍尔传感器测速法和感应线圈测速法的应用,阐明了这二种方法的优点。     

3D眼镜与智能抽屉的联合应用新技术

详细介绍了一种将具有处理器、感应模块、传感器、无线信号发射模块的3D眼镜与安装有无线信号接收模块、压力感应器、控制器、测距仪和弹射装置等的智能抽屉联合应用的全新智能家居技术,该技术利用头部和眼球运动发出指令,通过3D眼镜控制抽屉活动,让抽屉更智能化,可以在不碰触抽屉的情况下,将抽屉中的物品拿到使用者身边。同时也详细介绍了该技术的应用步骤,以期为智能家居技术的发展提供一个参考。     

电子产品通用生产测试系统实现原理

电子产品在制造系统常用的检验方法主要有ICT,信号回环测试,功能测试。上述各种的测试方法各有优缺点,适合不同的制造规模的生产企业采用。文章介绍了将ICT、信号回环测试、功能测试三者测试方法结合起来的一种通用的生产测试系统的实现原理。     

电子产品通用生产测试系统实现原理

电子产品在制造系统常用的检验方法主要有ICT，信号回环测试，功能测试。上述各种的测试方法各有优缺点．适合不同的制造规模的生产企业采用。文章介绍了将ICT、信号回环测试、功能测试三者测试方法结合起来的一种通用的生产测试系统的实现原理。     

基于单片机的病床呼叫系统设计与实现

医疗水平的不断提高,大部分医院都采用了病床呼叫设备,可这些设备基本都是有线设备无法移动,因而病人在离开病床后突发紧急情况时无法发出呼叫信号,而本文实现了基于单片机的无线病床呼叫系统的设计。该系统以STC89C51单片机为控制核心,无线发射模块首先发射呼叫信号,然后无线接收模块接收呼叫信号,经过STC89C51处理呼叫信号后显示呼叫病床号,实现病人与医护人员的无线沟通。     

电磁层析成像系统在激励条件下的响应

电磁层析成像在工业和生物药学检测领域具有潜在的实用性价值。敏感元件系统的灵敏度,稳定性和准确性在EMT检测中很重要,EMT系统激励条件是通过COMSOL多物理场有限元分析软件[1]进行分析的。我们从激励条件的变化对接收线圈直接的影响来讨论由8个等距离排列的传感线圈组成的传感器阵列的影响。在仿真和实验中讨论激励频率和接收信号之间的关系。结果显示,激励频率越高,接收信号越强。文章通过仿真结果提出图像重建优化的理论基础。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

Ansätze und Ergebnisse anglo-amerikanischer M&A-Forschung

Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。