防止航空发动机油泵转子端面异常磨损

一、企业介绍 中国人民解放军第五七一九工厂是空军装备部直属新型航空发动机修理基地,主要承担空、海军及海外用户的歼、强击机的动力装置维修业务,是周内唯一具备某新型航空发动机主体及全部配套件和全部工序修理保障能力的企业.30多年来,修理四大系列军用航空发动机上万台.     

发动机维修市场探究

各种新材料、新技术以及航空公司的各种外包项目不断涌现,使民用飞机发动机维修市场正处于转变期,且这种转变预计会持续很长时间。因此,独立第三方维修企业必须制定灵活的、客户化的解决方案,开发自主知识产权的修理技术,才能提高自身的市场竞争力。一、城市发动机维修市场现状随着我国发动机数量的持续增长,发动机维修市场出现了空前的繁荣景象。目前,城市发动机维修厂家的规模和数量也     

影响着汽车的性能和它使用寿命的维修

根据从事汽车维修行业近20年的工作经验,对汽车的发动机及电器设备的维护与修理技术有着相当强的掌握。主要介绍影响着汽车的性能和它使用寿命的维修,分析产生故障的原因及检测方法。     

低压涡轮导向器叶片更换工艺研究

针对某型飞机发动机低压涡轮导向器叶片出现的严重裂纹、烧蚀现象,本文提出修理方案:采用电火花切割法,切除故障叶片,再使用氩弧焊接法将完好的叶片焊接到低压涡轮导向器组件上,此修理工艺避免了更换整台低导组件,大大节省了发动机修理成本。     

装备维修项目绩效审计的基础理论分析

一、装备维修项目绩效审计的相关概念（一）装备维修项目绩效管理装备维修工作的基本任务是建立和完善适应军事斗争和装备发展需要的维修管理体系与保障力量,采用科学的方法和先进的技术,对装备实施有效的监控、维护、修理和技术管理,保持装备良好的技术状态,保障军队作战、训练和其他各项任务的顺利完成。装备修理应当按照规定的装备修理级别,采取军队修理与地方修理、部队修理与军队工厂修理、划区修理与建制修理相结合的方法,由相应的装备修理机构组织实施。装备修理必须严格执行技术标准,遵守操作规程,加强质量监控,保证修理的质量和安全。     

基于通信装备的系统维修观念

在通信装备维修工作中,只有掌握了科学的方法和理念,才能提高修理的效率,有时甚至能够决定修理的成败。树立科学有效的维修观对于培养修理作风和提高修理能力具有一定的作用,文章基于通信装备总结出一套维修工作中的系统理念。     

HEATCON HCS9200型热补仪常见故障分析及排除方法

随着复合材料技术发展,复合材料在军用、民用飞机结构中占比越来越高,复合材料修理在民航飞机维修工作中日趋增多,热补仪在复合材料修理中使用的频率也在增加。热补仪为树脂材料真空固化提供必要条件,是复合材料修理的关键设备之一,在有效保证维修质量的同时,大大提高了修理速度。本文阐述了HEATCON HCS9200型热补仪使用过程中出现的常见故障及排除方法。     

航空发动机燃油附件修理清洁度控制研究

航空发动机燃油附件是发动机控制系统的重要组成部分,它直接影响发动机的安全和性能。燃油附件在修理过程中,清洁度的控制是保证产品质量的重要条件和有效手段。本文以某型发动机燃油附件为例,分析了污染产生的原因,研究了污染对燃油附件的影响,选择了修理过程中的清洁度标准,并探讨了修理过程中应采取的措施,将对提高燃油附件修理质量、减少故障起到重要的积极作用。     

《航空发动机修理技术》一体化课程开发与研究

《航空发动机修理技术》是西安航空职业技术学院航空机电设备维修专业的一门专业核心课程,该课程的教学目的是让学生在熟悉了航空发动机原理与构造之后,掌握航空发动机大修必备的理论知识和基础技能。文章通过该一体化课程的开发与研究,将课程开发中的经验与成果与大家分享,以期提高整个航空类高职教学水平。     

设备维修的马尔可夫决策

设备的生产能力是与如何使用设备及如何维修设备密切相关的,设备的维修费用又与设备的状态及维修策略有关。一般讲来,设备维修可有快修、中修及慢修等不同策略:采用慢修,需要较多的修理时间,较少的修理费用,修理的质量较高,返修的可能性较少;采用快修,所需的时间较少,所需的费用较多,修理的质量较差,返修的可能性较大;采用中修,情况介于二者之间。如何从整体的角度出发,既考虑到在一定长时     

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。