高速切削雷达铝合金簿壁件的刀具路径确定研究

高速切削是先进制造技术曩重要的加工工艺之一.本文从高速切削刀具路径应尽量满足等体积切削,即切削过程中切削力恒定的角度出发,阐述了高速切削铝合金薄壁件应采用的刀具路径,提出了在现有条件下高速切削铝合金薄壁件应选用的切削速度.     

基于高速切削的模具加工研究

高速切削技术已经成为现代模具制造业发展的方向,对模具的加工工艺带来了重大的改变.本文重点研究了高速切削对模具粗糙度的影响,并探讨了适合模具加工的高速切削加工工艺及优化.     

浅谈高速切削技术在机械制造中的应用

高速切削加工技术作为先进实用的制造技术,正成为机械制造中切削加工的主流,具有强大的生命力和广阔的应用前景。文章介绍了高速切削加工技术的优越性及其高速切削加工的应用领域。     

高速切削加工技术在数控机床中论述

随着科技与技术的不断进步与发展,先进的工程技术与数控机床技术越来越受到人们的重视,并不断的被应用.而高速切削加工技术又是机械加工技术的重要组成部分,是新时期数控机床技术发展的一个重要方向.高速切削加工技术在数控机床中的应用还在一定程度上减轻了对环境的污染,提高了数控机床的工作水平和工作效率.本文就针对高速切削加工技术在数控机床中的应用进行分析与讨论.     

高速切削技术及其应用分析

高速切削技术是一项先进的制造工艺,已成为切削加工的重要发展方向。文章明确阐述了高速切削加工技术的含义,在高速切削机床、高速切削刀具材料及其应用领域进行论述,提出改善刀具寿命、缩短加工周期、提高生产效率的基本方法。     

硬质金属材料高速切削加工探讨

在金属加工行业,硬质金属材料的高速切削加工一直摆在从业者面前的一道难题。本文阐述利用高速切削工艺加工硬质金属材料的相关特点,详细解析高速切削的基础技术,分析高速切削的具体加工工艺以及切削过程中存在的问题,以便于高速切削技术在生产实践中具备更好的实用性。     

试述高速切削刀具材料的研究与选择

近年来,随着CNC加工技术的迅猛发展以及数控机床的普遍使用,刀具材料也不断更新和发展,高速切削加工已成为现代切削加工中不可缺少的重要手段。高速切削加工的切削速度是常规切削的5～10倍,对刀具材料以及刀具结构、几何参数等都提出了新的要求,尤其是对刀具的材料有更高的要求,高速切削刀具的材料要具有高的强度、韧性和硬度,良好的热稳定性和热硬性、良好的高温力学性能、较小的化学亲合力和耐磨性。这里就针对高速切削的刀具材料和性能及其合理选择措施进行探讨。     

浅谈高速切削加工技术及应用

近年来,HighSpeedCutting即高速切削发展迅速,其领先的技术不断的被运用到制造业当中。本文首先对高速切削加工的发展及优势进行了概述,然后详细介绍了高速切削加工的关键技术,最后就高速切削加工技术的应用作了简要的阐述。     

高速切削刀具材料的合理选择措施探析

近年来，随着CNC加工技术的迅猛发展以及数控机床的普遍使用，刀具材料也不断更新和发展，高速切削加工已成为现代切削加工中不可缺少的重要手段。高速切削加工的切削速度是常规切削的5～10倍，对刀具材料以及刀具结构、几何参数等都提出了新的要求，尤其是对刀具的材料有更高的要求，高速切削刀具的材料要具有高的强度、韧性和硬度，良好的热稳定性和热硬性、良好的高温力学性能、较小的化学亲合力和耐磨性。这里就针对高速切削的刀具材料和性能及其合理选择措施进行探讨。     

高速数控切削加工中的刀具研究

高速数控切削加工已成为机械制造的主流发展方向。高速切削时,随着切削速度的提高,切削力逐渐减小,切削温升逐渐趋缓,加工表面质量提高,加工成本降低。为实现切削加工的高速化,必须研究及开发与高速切削相适应的刀具材料、刀具结构及刀具监控技术。     

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。