发电机组励磁参数测试及仿真

文章介绍了发电机组励磁参数测试原理,确定了测试步骤,并依托某电厂实体工程,对发电机组励磁参数进行了现场测试,根据AVR和PSS模型进行了仿真计算,将现场测试结果与仿真计算结果进行比较,表明模型具有较高的精度和稳定性。     

基于SIMULINK的某型反坦克导弹攻顶弹道方案设计研究

在反坦克导弹的研制中,弹道方案的设计具有重要地位。本文基于SIMULINK仿真平台,在导弹外弹道运动方程的基础上,对某型反坦克导弹攻顶弹道方案进行了初步设计,提出了一种能够实现有效攻顶打击的弹道方案,并通过仿真结果分析了各运动方程中各参数变化对攻顶弹道效果的影响。     

基于SIMULINK的某型反坦克导弹平射弹道特性研究

本文基于SIMULINK仿真平台,在导弹外弹道运动方程的基础上,对某型反坦克导弹平射弹道方案进行了初步设计,提出了一种能够实现有效达成侧面打击的平射弹道方案,并通过仿真结果分析了各运动方程中各参数变化对攻顶弹道效果的影响。     

生命周期曲线预测模型在高科技产品中的应用

项目售卖型高科技产品的需求为项目拉动式离散型需求,需求波动大,高科技产品升级换代快,企业的需求管理难度大,企业经营风险高。针对此类型产品如何运用生命周期预测模型进行需求管理,进行了分析研究。应用某企业实际销量为分析样本,运用生命周期曲线预测模型来计算参数,通过计算的参数运用模型测算预测销量,最后通过预测销量与实际需求的对比分析指出了生命周期曲线预测模型的应用局限性,并通过分析偏离原因,得出该模型在高科技产品中的适用范围与修正措施,为后续项目售卖型高科技产品的需求管理提供了研究方向。     

特种设备维修器材中心逼近式灰色预测建模研究

为提高特种设备维修器材消耗预测精度,构建中心逼近式灰色GM(1,1)预测模型,改善传统灰色GM(1,1)模型对特种设备维修器材中呈指数型消耗数据预测精度低甚至不适用的情况。通过计算对比,对某特种设备2016年维修器材消耗量的初步预测值进行了修正调整,并最终确定消耗预计值。     

基于S型曲线运动的堆垛机效率分析模型的建立

利用VB语言,结合速度-位移的S型曲线模型,以某自动化立体仓库的实际巷道参数为分析依据,计算和分析单台堆垛机的效率。结合参考标准和理论计算结论,提出了等效距离的概念,并通过数据仿真分析得出堆垛机的效率与等效距离和运行速度之间的关系。     

基于Arena的汽车涂装物流过程仿真研究

对汽车生产线中的涂装物流过程进行了设计与仿真。先设定仿真目标,对仿真案例进行假设,然后利用Arena仿真软件进行具体模型的设计与建立。在建模过程中,对不同方案及相应的参数进行调试,对比了不同建模方案的相同参数以及同种建模方案内不同参数之间的关联性。     

某SUV动力学性能设计

本文介绍了某SUV动力学开发流程,并用理论计算的方法将悬架K&C参数对整车不足转向度的影响定量化;采用Adams软件对某SUV进行操纵稳定性仿真分析,并与试验结果进行对比,验证模型的准确性,为后续车型悬架正向设计提供思路和方法。     

基于PSO优化LSSVM在基坑开挖过程中周围建筑物沉降预测研究

本文提出一种用粒子群优化算法来确定LSSVM参数的方法。该方法是在对LSSVM进行分析的基础上,融合PSO的群搜索特征来提高LSSVM预测精度。文章最后采用昆明市某基坑周围建筑物沉降数据对此模型进行了验证,并与其他算法进行了对比分析,计算结果表明用该模型进行沉降预测相比其他算法具有较快的收敛速度和更高的预测精度。     

航空管路补偿器的疲劳寿命设计与试验研究

飞机高压管路系统中需要管路补偿器进行柔性连接,管路补偿器承受温度、压力、振动及补偿位移等载荷。文章对飞机高压管路系统用某型管路补偿器(DN100)进行工程设计和有限元仿真分析,研究补偿位移的疲劳寿命能力,并将结果同试验数据对比,以验证其设计方法的计算精度。结果表明,有限元法的计算精度优于工程设计法。     

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。