绕线机压紧装置横梁有限元分析及优化设计

压紧装置的横梁是大型变压器绕线机中的重要部件,为了使压紧装置横梁在满足强度及刚度的条件下结构更为合理,建立了它的有限元模型并利用ANSYS Workbench对其进行静力学分析,分析结果表明其强度和刚度均有较大的裕量。基于分析结果以"减少材料浪费,提高产品性能"为优化目标对横梁模型进行结构优化设计。优化结果显示:在保证满足设计要求的前提下,对横梁型钢、加强筋及局部进行优化,改进后横梁质量减轻28.9%,且应力分布更为均匀,此研究方法为绕线机压紧装置横梁的设计及优化提供了依据,具有实用价值。     

基于Excel的飞机舱门结构强度自动化计算技术

文章通过Excel软件内置的计算函数和强大的VBA语言编程功能，编制了舱门框梁结构强度自动化计算程序，具有完成多工况、多截面的批量处理能力，实现了该类构件强度的自动计算，在设定目标的前提下还可以对设计参数进行优化，有效减轻结构重量。     

共享单车智能锁插销轴的静力学分析与结构优化

针对紧凑型智能锁在锁车状态下由于用户强行推车过程中插销轴的变形,利用三维建模软件Solidworks对智能锁的插销轴进行参数化建模,利用ANSYS Workbench有限元分析软件获得插销轴的等效应力与总变形大小。在满足强度和刚度的使用要求前提下,为了尽可能的节约成本和减轻质量,将插销轴的结构尺寸作为设计变量进行响应曲面优化,建立优化目标与设计变量之间的响应曲面进而得到最优的设计方案。该分析优化方法对插销轴的轻量化设计提供了指导性作用,同时为后续的设计奠定了基础。     

汽车发动机内部连杆的优化设计

本文通过对汽车发动机连杆的静力学、运动学以及动力学分析,以减轻连杆质量、优化连杆结构为目的,对连杆进行了优化设计,为汽车发动机的改良设计提供了思路。     

浅析当代车轮轮辐结构强度

车轮是汽车的重要部件，作为汽车对汽车的行驶安全性、经济性和整车的外观都有重要的意义。随着汽车工业的不断发展，汽车制造商对车轮的要求越来越高，这就要求技术含量越来越高，怎样更好地分析车轮的轮辐结构强度，为实际应用中增强车轮轮辐结构强度服务，是本文研究的重点和意义所在，是本文理论研究的出发点和落脚点。     

基于IE方法的家用电器生产线平衡改善研究

文章以重庆A公司某家用电器生产线为研究对象,运用工业工程的方法和作业测定的基本理论,对该生产线的平衡问题进行分析研究,同时对影响生产线平衡的工装夹具、产品结构改良、物流方面进行了改善优化,最终使得该家用电器生产线的平衡率从51.24%提高到83.77%,实现了"一件流"的生产方式。     

万家口子水电站混凝土生产系统工艺布置

混凝土生产系统是水电站建设过程中必不可少的主要临建项目,它以工程施工进度和混凝土施工强度为基础,以满足混凝土质量和浇筑高峰期生产能力要求为目标。文章结合万家口子水电站工程的地形地貌及工程施工实际情况,优化混凝土生产系统工艺及设备选型,实现系统运行良好、管理方便、建设运行成本低、生产能力及生产质量满足要求的目标,为类似工程建设施工提供参考。     

起重机械主梁受力分析

文章通过对起重机主梁的受力分析,以优化理论为基础建立了适当的优化模型。以主梁重量最轻为优化的设计目标,以主梁的截面尺寸为设计变量,在满足强度、刚度、稳定性以及工艺要求的前提下,列出约束方程,应用结构优化设计方法求解出主梁截面尺寸的最优解。     

电网企业中长期发展战略下的成本管理研究

文章以战略成本管理理论思想为指导,从战略定位、价值链和成本动因分析三个部分构建了电网企业战略成本管理系统。研究表明,电网企业应该以平衡计分卡为基础,构建战略导向型的成本管控模式。优化价值链,实现"客户维度"和"内部业务维度"的预算目标;降低结构性和文化性的成本动因,实现"学习和成长维度"的预算目标;以战略为导向进行成本管理,最后实现"财务维度"的终极EVA预算目标,推动战略的实现。     

关于电能表远程抄表系统通信方式的设计探讨

本文从电能表远程抄表系统的特点、结构、工作流程出发,对其做出较为详尽的概述,并以通信方式设计原则、目标与内容为切入点,深入探讨了电能表远程抄表系统的通信方式设计思路,希望以此减轻城市电网负荷、简化电网结构,为达到智能化、系统化、自动化管理目标创造条件,为实现电力资源及人力资源优化合理配置奠定基础。     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

The Early History of the Cumulants and the Gram-Charlier Series

The early history of the Gram-Charlier series is discussed from three points of view: (1) a generalization of Laplace's central limit theorem, (2) a least squares approximation to a continuous function by means of Chebyshev-Hermite polynomials, (3) a generalization of Gauss's normal distribution to a system of skew distributions. Thiele defined the cumulants in terms of the moments, first by a recursion formula and later by an expansion of the logarithm of the moment generating function. He devised a differential operator which adjusts any cumulant to a desired value. His little known 1899 paper in Danish on the properties of the cumulants is translated into English in the Appendix.     

Capturing the Implications of Services Trade Liberalization

This paper evaluates the impact of service sector trade liberalization on the world economy by a ten-region, eleven-sector CGE model with import embodied technology transfer from developed countries to developing countries. Simulation results show that service sector trade liberalization not only directly affects world service production and trade, but also has significant implications for other sectors in the economy. The major channel of the impact is through inter-industry input-output relations and TFP growth induced from services imported by developing countries from developed countries, which may be embodied with new information and advanced technology.     

City Children and Genderfied Neighbourhoods: The New Generation as Urban Regeneration Strategy

Former industrial cities in the West are employing gentrification as urban policy. In these policies, women and families currently play an important role as gentrification pioneers. In my analysis of Rotterdam in the Netherlands, I propose the term genderfication to understand the gender dimensions of this process. Genderfication refers to the production of space for different gender relations. I analyse Rotterdam's urban planning program for becoming a ‘child‐friendly city’, which entails replacing existing urban dwellings with new, larger and more expensive ‘family‐friendly homes’ as a strategy for urban re‐generation. Urban re‐generation supplements regeneration in the form of material and economic restructuring, and refers to the replacement of part of the current population by a new and better suited generation. The ‘child‐friendly city program’ is considered in tandem with punitive ‘youth policies’.     

Hierarchical Models in Environmental Science

Environmental systems are complicated. They include very intricate spatio-temporal processes, interacting on a wide variety of scales. There is increasingly vast amounts of data for such processes from geographical information systems, remote sensing platforms, monitoring networks, and computer models. In addition, often there is a great variety of scientific knowledge available for such systems, from partial differential equations based on first principles to panel surveys. It is argued that it is not generally adequate to consider such processes from a joint perspective. Instead, the processes often must be considered as a coherently linked system of conditional models. This paper provides a brief overview of hierarchical approaches applied to environmental processes. The key elements of such models can be considered in three general stages, the data stage, process stage, and parameter stage. In each stage, complicated dependence structure is mitigated by conditioning. For example, the data stage can incorporate measurement errors as well as multiple datasets with varying supports. The process and parameter stages can allow spatial and spatio-temporal processes as well as the direct inclusion of scientific knowledge. The paper concludes with a discussion of some outstanding problems in hierarchical modelling of environmental systems, including the need for new collaboration approaches.