基于ANSYSWorkbench的滚动丝杠模态分析

运用ANSYS分析软件对数控机床纵、横向进给滚动丝杠进行模态分析，得出了比较精确直观的结论，验证了数控机床关键传动装置结构设计的合理性。     

NACA634型风力机叶片三维建模及模态分析

叶片作为风力机的重要部件,对其进行合理的设计至关重要。本文使用UG三维软件,完成叶片的三维实体建模;运用有限元方法,选定叶片材料的特征参数,进行叶片的模态分析,确定了叶片的振型模态,并对比分析叶片各阶的振型模态结果。结果显示叶片的主要振动形式为挥舞和摆振,这为大型风力机叶片的设计和优化提供了参考。     

预应力混凝土方桩的离心机管模的振动模态分析

本文主要应用CATIA软件对预应力混凝土离心方桩管模进行三维建模,将建立的数字模型导入到ANSYS软件中进行振动模态分析,得到了管模的各阶固有振动频率及相应的振动模态。最后,对离心机的结构设计提供了宝贵建议。     

行星齿轮传动装置的有限元分析

本文以行星齿轮传动装置为研究对象,以ANSYS软件为操作平台,对其进行了建模,装配,有限元分析,并以太阳轮为例,得到齿轮啮合任意位置的载荷、应力、应变等关键性能参数,对齿轮进行优化设计提供了参考。     

坚持八字方针再创东传公司新辉煌

东风汽车传动轴有限公司(简称东传公司)是一个拥有30多年历史的国有企业,拥有3个分公司(厂)、4个参股子公司,主要生产经营汽车传动轴、转向器、转向传动装置、离合器四大总成及零件的大型汽车零部件骨干企业。2002年是东风汽车传动轴有限公司新的党政领导班子成立的第一年,大家团结一心,抓住机遇,     

基于CATIA发动机曲轴的模态分析

本文主要应用CATIA软件对汽车发动机曲轴进行三维建模,并利用CATIA中的分析模块对曲轴进行了模态分析,得到了发动机曲轴的各阶固有振动频率及相应的振型。将分析结果与发动机的工作频率进行比较分析,结果表明:该曲轴结构设计避开共振区。     

乘用车驱动桥壳有限元分析

本文以某汽车的驱动桥桥壳为模型,在Pro/E三维建模软件中对驱动桥桥壳基于实际尺寸进行建模,并将其导入到ANSYS Workbench有限元法分析软件中。在ANSYS Workbench中对桥壳进行四种工况的静力学分析和自由状态下的模态分析,得到对应的变形、应力云图和前六阶振型及频率。根据各工况的应力分布位置、变形量和各阶振动频率的分析结果,对驱动桥桥壳提出相应的优化改进建议。     

往复式泥浆泵动力端连杆模态特性分析

为改善往复式泥浆泵的工作性能,减少泥浆泵动力端连杆在工作过程中出现由振动引起的各种失效,运用有限元分析软件ANSYS对连杆进行模态特性分析,通过计算得出了前6阶模态及各模态下的振型,分析计算结果并指出连杆的薄弱环节,为泥浆泵动力端的后续动力学分析和结构优化提供了依据。     

基于Adams运动仿真的新型清洁车三维设计与分析

运用Autodesk Inventor Professional软件,根据所需清洁车的设计要求进行三维建模,在软件中完成了零件的设计与整车装配。利用Adams软件与三维软件直接的接口将三维模型导入到Adams软件中进行关键部件的运动分析,验证了设计方案的正确性。清洁车利用齿轮完成传动机构功能需求。为了提高工作的效率,清洁车设计了水箱洒水机构和扫刷机构部分。使用软件进行三维建模与仿真分析软件完成整体设计,节省设计工作时间,节约设计经费。     

地铁轻量化车体结构及其模态分析

简述了地铁车体轻量化对于高效率运输和经济效益方面的积极意义,介绍了地铁铝合金车体的特点及其结构,运用ANSYS软件和模态分析方法建立了地铁铝合金车体的有限元模型,分两种工况进行了模态计算分析,得出了车体的前6阶模态及振型,结果表明该车体满足动态设计要求,并对车体轻量化工作提出了建议。     

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。