论通风空调施工技术

近年来,通风空调安装工程在各类办公楼及酒店中得到广泛使用,是建筑工程中一个重要的分部工程,通风空调生产机房(楼)通风空调安装工程风管部分在设计上采用无机复合玻纤管,首先我们必须了解无机复合坡纤管的特点及制造过程,然后对其进行安装。通过介绍通风空调的选材以及安装过程、试运转等,为以后的通风空调的施工提供了参考的依据。     

建筑通风空调系统施工安装控制要点探讨

阐述了建筑通风空调系统工程安装过程的孔洞预留、通风空调风管、空调机组、风机盘管系统的安装技术要点。     

浅谈不同材质风管的经济比较

现阶段，伴随大型空调的应用越来越广泛，空调材质也在不断发生着变化，从最初的铁皮风管，发展到现在的多种复合风管，如玻璃钢风管、复合纤维风管等等。现主要对工程中出现的玻纤复合风管和镀锌钢板风管做了比较，进行了归纳总结。     

复合玻纤板风管在工程中的应用

传统的空调风管一般都为镀锌钢板风管,随着科技的进步与发展,越来越多的新型材料用于工程建设当中,如:复合玻纤板风管、硬聚氯乙烯风管、铝板风管、有机风管等等。在这些材料中尤以复合玻纤板风管的应用越来越普遍,近年来在很多工程中的应用比较多,基于此,文章探讨了复合玻纤板风管在工程中的应用。     

通风空调风管系统漏风量测试方法的探讨

风管漏风量的大小是检验通风与空调系统工程质量和降低能耗的一项重要指标,现行国家规范中的漏风测试方法的测试装置复杂,操作过程复杂,在施工现场漏风量检测中较难实现。本文提出的Q89型风管漏风测试仪测试法经过工程实测证明具有整台仪器小巧、灵活、检测迅速、方便、精度高等优点,值得在通风空调风管系统漏风量现场检测中推广应用。     

地铁通风与空调节能控制设计

地铁通风空调系统的能耗占到整个地铁系统总能耗的接近一半,因而对地铁通风空调系统进行节能控制十分必要。本文根据地铁空调负荷的变化特点,对地铁通风系统的设计进行了研究,最后提出了地铁通风节能控制的方案。     

改善集中式空调送风空气质量

集中式空调通风系统的污染问题日益受到人们的重视。在送风系统中的污染段集中在送风管道。其中,风管长时间使用后,充斥着大量的可吸入颗粒物和微生物,它们的存在影响着人体的健康与生产设备的运行。国家质量监督检验检疫总局曾于非典期间发布了《空调通风系统清洗规范》。不久后,卫生部制定的《公共场所集中空调通风系统卫生规范》出台。这一系列规范的出台表明了国家对于空调通风系统安全使用的重视,同时也说明我国在集中式空调通风系统运行管理方面存在一些急需改善的不足。宝钢冷轧彩涂区域对于空气质量有严格要求,空气中的固体颗粒与悬浮物直接影响成品质量,而通过风管系统的清洗可以有效解决这一问题。文章主要结合宝钢厂区内的实际情况,阐述空调风管的清洗流程与效果。     

深圳地铁空调通风系统的设计

地铁列车是现代化城市交通极为重要的运输工具。为乘客提供舒适的内部乘车环境是对地铁列车的基本要求。评价环境舒适度的主要指标包括温度、湿度、风速、有效换气量以及空气品质等几个方面。因此应该安装通风—空调系统,以便对环境状态参数进行有效的调节。本文以深圳地铁一号线续建工程为例进行空调通风系统设计分析。     

改善集中式空调送风空气质量

集中式空调通风系统的污染问题日益受到人们的重视。在送风系统中的污染段集中在送风管道。其中，风管长时间使用后，充斥着大量的可吸入颗粒物和微生物，它们的存在影响着人体的健康与生产设备的运行。国家质量监督检验检疫总局曾于非典期间发布了《空调通风系统清洗规范》。不久后，卫生部制定的《公共场所集中空调通风系统卫生规范》出台。这一系列规范的出台表明了国家对于空调通风系统安全使用的重视，同时也说明我国在集中式空调通风系统运行管理方面存在一些急需改善的不足。宝钢冷轧彩涂区域对于空气质量有严格要求，空气中的固体颗粒与悬浮物直接影响成品质量，而通过风管系统的清洗可以有效解决这一问题。文章主要结合宝钢厂区内的实际情况，阐述空调风管的清洗流程与效果。     

地铁站冷水机组吊装技术探讨

随着我国地铁行业的迅速发展,通风空调系统是地铁的重要组成部分,而冷水机组是通风空调系统的一部分,在地铁项目建设中同样占据核心地位。文章以深圳地铁11号线中福永站和机场站为例,对地铁通风空调机组中两台冷水机组的吊装技术进行了探讨。     

Multinomial distributions applied to random sampling of particulate materials

When sampling a batch consisting of particulate material, the distribution of a sample estimator can be characterized using knowledge about the sample drawing process. With Bernoulli sampling, the number of particles in the sample is binomially distributed. Because this is rarely realized in practice, we propose a sampling design in which the possible samples have a nearly equal mass. Expected values and variances of the sample estimator are calculated. It is shown that the sample estimator becomes identical to the Horvitz–Thompson estimator in the case of a large batch-to-sample mass ratio and a large sample mass. Simulations and experiments were performed to test the theory. Simulations confirm that the round-off error due to the discrete nature of particles is negligible for large sample sizes. Sampling experiments were carried out with a mixture of PolyPropylene (PP) and PolyTetraFluorEthylene (PTFE) spheres suspended in a viscous medium. The measured and theoretical variations are in good agreement.     

Performance appraisal and culture: practice and attitudes in Hong Kong and Great Britain

This article compares the practice of and attitudes towards performance appraisal for managerial and professional staff in Hong Kong and Britain, and considers the extent to which actual practice and employee preferences are in alignment. Findings suggest that appraisal may be more widespread in Hong Kong than in Britain. However, British appraisal tends to be more participative and to place greater emphasis on discussing objectives, development and career plans. Hong Kong appraisals appear to be more directive and Hong Kong respondents perceive a higher level of 'negative' appraiser behaviour. In spite of this, Hong Kong respondents show if anything slightly more confidence in the utility of appraisal than do British respondents. They show stronger support for appraisal's use for reward and punishment and less support for the objectives-setting and training and development uses than do the British sample. Hong Kong respondents are more likely than their British counterparts to favour involving a more senior manager in appraisal, and they are less likely to prefer more frequent appraisals. There was little evidence that Hong Kong respondents had a stronger preference for group-based appraisal criteria, although they did show more support than the British sample for the use of personality as a basis for appraisal. Overall, the suggestion is that appraisal has been adopted in Hong Kong organizations but that the practice of appraisal has been adapted to suit the cultural characteristics of the society.     

Narrative construction of expatriate experience and career cycle: discursive patterns in Finnish stories of international

Expatriate experience is not only a disconnected occasion for cross-cultural anxiety and adjustment but also an important event in the process of self-development and learning. Following this view and arguing for a discursive approach, the paper focuses on ways in which expatriates themselves tell and interpret their development and movement across expatriate career cycle. Meaning systems connecting expatriate job with previous and following work experiences in career stories of Finnish engineers and managers were identified using a combination of narrative and discourse analysis. No evidence was found of an autonomous expatriate discourse but, in contrast, expatriate career cycle was narrated using available organizational repertoires of development and career. Describing and discussing the meaning-making properties of three identified discourses - bureaucratic, occupational and enterprising - the paper emphasizes the organizational environment of expatriate experience while acknowledging the limits of these contemporary career vocabularies in addressing individual learning and change in cross-cultural settings.     

Internet professionals: job skills for an on-line age

The paper explores the increasing popularity of the Internet technology Singapore. It argues that the diffusion of Internet technology to South-East Asia would create new duties and responsibilities for human resource (HR) managers. One such duty is the identification of the skills which professional Internet staff would need to perform their work effectively in organizations. Using a triangulation research method, empirical study has identified the new professional Internet jobs which have emerged the IT industry in Singapore and the skills that professional Internet personnel require do their jobs effectively. Analysis of the findings indicates that professional Internet skills involve both technical and creative abilities and that, in explaining or defining professional Internet skills, it is necessary to use both the technical and the social conceptions of skill. This argument is based on the view that the creative skills include tacit skills so that a definition based solely on the technical conception of skill cannot capture the various dimensions of Internet skills. The implications of the research findings for human resource managers are raised.     

关于高校教学秘书工作的认识与思考

教学秘书在教学管理中起着举足轻重的作用,本文结合自己近6年从事教学秘书的工作实践和体会,阐述了高校教学秘书的工作职能和工作内容,提出了教学秘书应具备的素质,分析了日前教学秘书工作中存在的问题,探讨了教学秘书工作改进的方法与途径。     

Sister Communities: Rejecting Labels of Informality and Peripherality in Vanuatu

Some labels have dire consequences. This article takes issue with the labels commonly used to describe the physical and social location of communities living on the edge of Port Vila, Vanuatu—labels that position communities for eviction by entrenching tropes of informality and peripherality into how they are seen and represented. Such terms include informal, settlement, informal settlement, squatter and peri-urban. Based on interviews with around 100 people and two years of ethnographic engagement with urban communities in Port Vila, Vanuatu, I critique the language of policy against the lived experience of those at the urban edge. I use Bourdieu's articulation of power as an accumulation of symbolic capital that enables one to speak the world into being. I conclude that the language of policies and plans is reflective of a dominant discourse in urban studies and international aid, and non-reflective of the experience and identities of people living at the urban edge. My interviewees and interlocutors maintain their identities as sister communities—as places grounded in the formality of customary tenure, and as part of the city rather than outside it.     

BLOCOS URBANISM: Capitalism and Modularity in the Making of Contemporary Luanda

In this article we portray and unpack the fabric of urban expansion in contemporary Luanda. In doing so, we examine interdependencies and complementarities between the organization of oil extraction off the coast of Angola, the emergence of particular modalities of modernist city planning for the expansion of its capital city, and the proliferation of cement blocks in the making of new urban forms throughout its burgeoning peripheries. By showing how urban development has unfolded through the interconnected realization of multiple kinds of systematizing blocks—namely oil blocks, city blocks and cement blocks—we analyse key material components in the production of new markets and urban spaces in the Angolan capital. By tracing forms of capitalism and modularity in the making of contemporary Luanda, we develop the concept of blocos urbanism to draw attention to modes of standardization and the production of legibility in contemporary processes of urbanization. Through this study, we aim to contribute to the conceptual apparatus for deciphering our global urban condition.     

Different Manifestations of the Concept of Empowerment: The Politics of Urban Renewal in the United States and the United Kingdom

Over the course of the 1990s the concept of empowerment became firmly established within the vocabulary of urban politics in several different national contexts. This article analyzes the spread of this concept by looking at the politics of urban renewal in the United States and the United Kingdom. It shows that even if (and possibly because) the definition of empowerment remained vague, the turn to empowerment came out of and contributed to a shift in the nature of urban politics and to a reconfiguration of governmental methods, the role of the state and, consequently, to changes in civil society, all of which were associated with a rise to prominence of a neoliberal perspective.     

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.