CAD/CAM技术在数铣中的应用

文章根据数控加工技术和CAD/CAM一体化技术的基本功能原理,结合数控铣床编程与加工的实践,对CAD/CAM技术在数控铣床加工零件的过程中进行实例分析,阐述了其在数铣加工中的具体实施过程,此技术大大提高了产品生产的预见性和准确性,并在一定程度上提高了加工精度和速度,节省了生产成本,提高了数控铣床的使用效率和生产效益,说明了CAD/CAM技术在产品设计制造中的作用和优势。     

CAD/CAM技术在现代工业中的应用与发展

CAD/CAM技术的发展,大大加速了产品的设计制造进程,减轻技术人员的劳动强度。CAD/CAM技术正向着集成化、网络化、智能化、绿色化发展。文章介绍了CAD/CAM技术在机械设计、数控加工中的应用,从CAD/CAM软件使用情况分析了目前我国制造业的现状。     

高速加工中基于CAD/CAM的影响因素

高速加工是随着数控加工设备与高性能加工刀具技术的发展而日益成熟的一项新型加工技术.它基于数控设备和CAD/CAM软件,因此CAD/CAM软件的使用对高速加工零件精度有很大的影响.文章对相关的影响因素进行了简单的分析,以便相关企业在进行高速加工时参考.     

基于NX8.0的模具型腔数控加工工艺分析与编程设计

CAD/CAM技术是先进设计与制造技术的主旋律,模具CAD/CAM技术是现代模具企业研发与生产的关键技术。基于NX8.0,进行了某型腔零件的数控加工编程,根据零件特点与加工要求进行工艺分析,合理安排了加工工序;实现了型腔上下表面、四个侧面、内腔和各孔系的加工编程,通过创建刀具、几何体、工序、程序等节点,生成刀轨并进行刀轨的动态验证,最后通过后置处理生成程序单等步骤,实现该模具型腔数控加工的自动编程。     

CAD/CAM技术在橡胶机械设计制造中的应用

CAD/CAM技术自1970年开始在我国引进，并被制造行业广泛地推广和使用。文章通过介绍CAD/CAM技术的特点及优势，同时结合自身实际的经验介绍几种技术在橡胶设计制造中的应用，以此做经验的分享。     

快速原型与铸造技术的集成成形制造

RP技术与铸造工艺集成产生的快速零件/模具制造技术是铸造技术、CAD技术、RP技术、CAE技术、CAM技术的集成,能够为快速制造小批量、单件模具/零件提供广阔的发展前景。文章阐述了典型的快速原型技术,并从CAD模型直接驱动铸型成形的金属零件/模具制造和CAD模型间接驱动铸型成形的金属零件/模具制造两方面探讨了RP与铸造工艺集成。     

CAD/CAM在高精密复杂模具设计与制造中的应用研究

在国民经济快速稳定持续发展的大背景下,现代化的工业产品在性能和种类方面有着极大的提升和拓展。出于有效适应现代工业快速发展需求的考虑,高精密模具的设计和制造工作在速度和效率方面也需要得到进一步的拓展。就目前的情况来看,在设计和制造高精密复杂模具过程中,CAD和CAM技术的应用,使得模具的设计和制造周期得到一定压缩的同时,提升了整体的加工质量以及高精密复杂模具加工的可能性。文章以高精密复杂模具设计中CAD/CAM的技术系统特征分析作为切入点,在全面分析CAD/CAM技术系统常用软件的前提下,对高精密复杂模具设计制造中CAD/CAM技术的具体应用展开了相应的分析。     

浅谈机械设计和加工中CAD/CAM技术的应用

本文,将首先为大家介绍一下CAD/CAM技术技术的概念,然后讲述CAD/CAM技术在机械和加工技术的广泛应用,最后将会把CAD/CAM技术技术应用上的一些优势为大家呈现出来,使机械生产企业增加使用CAD/CAM技术的信心。     

高速加工和CAM对加工的影响

现从现代数控高速加工技术的发展方向，分析高速加工应用在现代制造加工中的优点和地位，以高速低负荷状态下的切削比低速高负荷状态下切削更快地切除材料。使用合适的高速切削工艺，在高速状态下可切削高硬质的材料和高精度的零件。以及使用CAD／CAM软件编程对高速加工零件的精度影响。     

CAD/CAM在高精密模具设计与制造中的应用

现今,传统模具设计制造技术已经非常落后,难以满足市场对模具的要求,所以新模具设计、制造技术的开发和研制迫在眉睫。基于这种形势,模具CAD/CAM技术得以迅速发展,并在现代模具生产中占据重要地位。目前在模具的设计制造过程中已较广泛应用CAD/CAM技术,CAD/CAM技术能够使生产周期和生产成本显著缩减,使经济效益和生产效率明显提高。文章对CAD/CAM的技术特点进行了总结,阐述了CAD/CAM在高精密模具设计制造中的应用。     

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.     

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.     

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.     

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.     

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.