浅谈固体火箭发动机试验中的质量控制细化方法

对固体火箭发动机试验过程中的质量控制方法进行了分析和研究。提出了通过质量控制方法细化来有效提高固体火箭发动机试验质量水平的想法,并通过开发和应用质量管理系统实现细化质量过程控制方法的目的。该系统的应用提高了工作效率和发动机试验质量。     

为国争光奉献国防事业——记全国劳动模范,航天四院院长叶定友

岁月无痕，事业永恒。勤奋挚着的人生是丰富多彩的。 今年６０岁的叶定友，自１９６３年于西北工业大学固体火箭发动机专业毕业后，即分配到国防部五院固体发动机研究所工作，至今为固体事业拼搏了３７个年头。他是我国固体火箭发动机专家，是这一领域的技术带头人和型号工程指挥员之一。他几十年如一日，努力工作，成绩显著：１９９２年７月担任第四研究院院长（研究员、博士生导师）；１９８０年被授予部级劳动模范称号；１９８６年被授予“国家级有突出贡献”的中青年专家称号；１９９１年１１月被批准享受政府特殊津贴；１９９５年被授…     

推进剂粉尘点火特性及预防措施

高压水射流清理固体火箭发动机中的推进剂时存在危险性,从粉尘点火诱发推进剂爆炸的角度出发,探讨了推进剂粉尘点火的特性和影响因素。通过对作业环境的分析,提出了静电防护和粉尘浓度监测两种主要措施,由此提高了水射流清理推进剂的安全性。     

文化传承使命 文化助推发展——中国航天四院的文化体系建设

中国航天科技集团公司第四研究院(下简称航天四院)——成立于1962年,主要承担我国战略、战术导弹和宇航工程固体火箭发动机的研制、生产、试验以及在该领域内的重大预先研究任务。经半个多世纪的发展,已成为我国历史最久、水平最高、种类最全、实力最强、规模最大的固体火箭发动机专业研究院。50余年来,在党中央、地方各级领导和上级单位领导下,航天四院人始终以富国强军为己任,秉承"国家至上、争创一流"的价值追求,闯出了一条自力更生、自主创新发展之路,使     

飞机发动机吊装实训平台安全性论证

以理论力学,材料力学,机械设计基础为理论依据,通过对发动机在安装状态和在吊装状态时的受力分析,计算论证了飞机发动机吊装实训平台的安全性。并且经过实践检验和无损检测的鉴定,进一步证明了飞机发动机吊装实训平台的安全可靠性。     

财务建功 志在航天——记航天动力技术研究院总会计师王林

中国航天科技集团公司第四研究院（航天动力技术研究院．简称“四院”）组建于1962年．是我国规模最大、技术实力雄厚、配套完整的固体火箭发动机专业研究院,主要承担着国家战略、战术导弹和宇航工程型号固体发动机的研制、生产、试验及该领域内的国家重大预先研究任务,是“十五“和“十一五”期间原国防科工委确定的重点统筹建设单位之一,     

飞机发动机分解与装配教学平台安全性论证

以理论力学,材料力学,机械设计基础为理论依据,通过对发动机的水平状态、垂直状态、以及翻转状态时的受力分析,计算论证了飞机发动机分解与装配教学平台的安全性。并且经过实践检验和无损检测的鉴定,进一步证明了飞机发动机分解与装配教学平台的安全可靠性。     

今日雕弓满月——记航天四院高新发动机总设计师侯晓

崭露头角,施展才华 1990年,27岁的侯晓,中国第一位固体火箭发动机专业毕业的博士,从西北工业大学毕业.他毅然舍弃了繁华的都市,舍弃了令人称羡的高薪,来到了地处西部的中国航天科技集团公司第四研究院,选择了科技兴国、以武安邦的航天事业.     

固体火箭发动机金属件焊接过程质量控制

在固体火箭发动机金属件焊接施工过程中,对焊接材料、焊接设备、焊接工艺规程、焊接生产现场等环节进行有效的质量控制,以保证产品的焊接质量。在本文的研究中,分析了焊接过程质量控制要点,在此基础上,通过长安福特焊接车间的质量控制的实际案例,说明了在实际焊接过程中,通过采取合适的过程质量控制措施,可以在很大程度上提高金属件焊接效果。     

简析无损检测技术在特种设备检验中的运用

对无损检测技术的特点和现状进行分析,并对磁粉无损检测技术、射线无损检测技术和超声波无损检测技术等应用做出了具体的分析。     

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。