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1.
潇琦 《北京房地产》2008,(11):39-40
AG2000(TM)全玻璃紧急疏散平滑自动门新品打破世界全玻璃自动门缺乏安全逃生功能的局限,标志着中国自动门行业迈入安全标准的又一新的台阶。  相似文献   

2.
材料成型技术在自动门控制系统逐渐向大型化、复杂化和智能化的方向发展.现在,国内外的发展状况自动门是不是很均衡,国外产品性能好,但价格比较昂贯,而国内产品虽然价格便宜,但性能差,容易失败.因此,在本文所设计的自动门控制系统,其功能强大,价格适中的高性价比,会有很强的市场竞争力.本设计主要应用单片机8051为控制核心,直流电机,热释电红外传感器等系统的组合.  相似文献   

3.
南京康尼机电股份有限公司(以下简称康尼公司)成立于1992年,是中国轨道交通车辆现代化装备的主要供应商之一,也是国内唯一具有轨道车辆自动门系统全套核心自主知识产权的企业.其主要产品城市轨道车辆自动门系统自2006年以来已连续保持我国城轨市场50%以上份额。  相似文献   

4.
郑勇 《价值工程》2021,(3):220-221
针对传统自动门继电器控制的缺点,设计了一种基于PLC和自动门控制系统。系统以可编程控制器为核心,系统不断采集自动门系统各类传感器数据,通过变频器驱动电动机,实现门的自动开启和关闭,并设计了防夹和安全警报功能,阐述了可编程控制器、变频器、传感器等电路设计以及系统软件设计。  相似文献   

5.
上海伊良自动门有限公司公司是设计制造、销售国内外自动门的专业化工程公司。公司成立以来,已为宾馆、写字楼、办公楼、别墅等工程的自动化设备供应、安装调试及维修制  相似文献   

6.
本文着重对大型室内停车场计算机管理系统中,采用8031单片机组成的出入口车辆自动识别与自动门控制系统的工作原理及软、硬件结构作了介绍。  相似文献   

7.
随着十一五规划能耗和环境指标的提出,节能降耗已然成为经济和社会发展的重要议题。而全社会的能耗指标能否降低,地产行业起着至关重要的作用。房地产企业能否把节能降耗进行到底,是提升企业形象和竞争力,保持企业可持续发展的重要内容,更是决定企业能否在未来的市场竞争中立于不败之地的关键所在。自动门不但关系到人们的安全,其节能与否更是关系到其使用寿命。  相似文献   

8.
孙疃煤矿地面运输环线道口较多,人员、机动车辆过往较为频繁,是事故的多发地点,设计安装电动自动门,实现地面运输环线封闭智能化管理,经实地使用安全效果良好。  相似文献   

9.
随着“十一五”规划能耗和环境指标的提出,节能降耗已然成为经济和社会发展的重要议题。而全社会的能耗指标能否降低,地产行业起着至关重要的作用。房地产企业能否把节能降耗进行到底,是提升企业形象和竞争力,保持企业可持续发展的重要内容,更是决定企业能否在未来的市场竞争中立于不败之地的关键所在。自动门不但关系到人们的安全,其节能与否更是关系到其使用寿命。  相似文献   

10.
王正谦 《物流技术》1996,(5):37-37,44
不要固定设备的无货架自动仓库系统王正谦译通常,自动化仓库由堆垛起重机和货架组合而成。这是指一般的仓库,而本文要介绍的是一种全新概念的自动仓库系统——无货架自动仓库。它是用货架作为其固定装置,直接将物件分层(格)装在托盘上进行保管,用自动门式起.重机或...  相似文献   

11.
The aim of this paper is to explore the relationship between entrepreneurship and the structure of the periphery. The objective is to reach an understanding of the entrepreneurial process within the context of the periphery, which is traditionally seen as a poor environment. The paper considers the concept of peripherality and identifies a process of gravitation that drains higher order services towards the core. However, this deterministic model does not correspond with the realities of the Scottish Highlands. The paradox is that new businesses are being created that appear to use old redundant peripheral values such as tradition. It is argued that it is the social construction of the periphery that produces this post-modern change. The qualitative methodology indicates the emergence of a new spatial paradigm of aesthetic consumption. Two indicative case studies are presented which show that entrepreneurship is the creation and extraction of value from the environment. Their businesses are the commodification of non-material and aesthetic values. Further analysis of these data demonstrates that entrepreneurs interpret their own version of the environment, rather than merely reacting to it. In turn, they enact this interpretation which forms the basis of their businesses.  相似文献   

12.
陈长彬 《企业活力》2011,(10):21-26
互联网是全球化的虚拟化,虚拟体验直接影响顾客的认知与行为,从而影响网站的品牌。基于受众体验的国内门户网站品牌塑造模型的构建,是国内门户网站在参考国外先进的网站建设的成功经验的基础上,塑造适合国内门户网站的品牌策略和一项重要的竞争策略。  相似文献   

13.
建筑工程计价简易方法   总被引:1,自引:0,他引:1  
冯钟宁 《价值工程》2010,29(2):209-211
本文是根据经过几年来的探讨,提出了建筑工程简易方法的最基本方法,即工期分析法。它的产生是由于市场经济体制改革的不断深化,由繁杂的计量过程转化到简易的工期计价方法,由微观思维到宏观实践的结果。它是建筑工程计量方法的革新,是建筑工程计价与国际清单计价惯例的接轨。因此,本文在今后研讨建筑工程计量的方法中是有一定价值和深远意义的。  相似文献   

14.
Understandings of informality commonly derive from research undertaken in states perceived as lacking the capacity to regulate the practices of their populations. This Interventions forum aims to expand the geographical parameters of empirical research on urban informality. A more global approach, we argue, also necessitates questioning assumptions that undergird this concept—in particular the underlying conception of the state. In this vein, this collection of papers aims to rethink theories of the state through the lens of informality, and vice versa, to inform and refine the concept of informality through a more thorough understanding of states. In so doing, the contributions engage with concepts that have been central both to theories of the state and to the study of informality, namely governance, agency, legitimacy, sovereignty and legality. Following this introduction setting out our theoretical approach, the Interventions forum unites five empirical studies that discuss the nexus of informality and states in contexts that have been researched less extensively from this perspective, each tackling one of the above‐mentioned concepts. Based on these different entry points, the papers provide novel angles on a state‐theoretical understanding of informality. A concluding essay brings these approaches together, reflecting on the possibilities of translating concepts to different sites.  相似文献   

15.
This article explores cultural cityism at a time when a more expansive, ‘planetary’ urbanization is argued to have superseded ‘the city’ as the dominant urban form. It takes an essentially Lefebvrian problematic and works this through an examination of one aspect of contemporary metropolitan culture, the L.S. Lowry exhibition at Tate Britain, held in the summer of 2013. The article scrutinizes the juxtaposition of Lowry's images of the industrial city with the image of ‘global’, corporate London provided by Tate Britain itself. The exhibition is presented as evidence of Lefebvre's argument that although the urban core has imploded and exploded, through images the city ‘can perpetuate itself, survive its conditions’. Taking stock also of the preponderance of city images in culture more widely, it is argued such images make a fetish of the city, producing also an ‘urban pastoral’ that obscures the defining characteristics of urban life today. Finally, Benjamin's concept of the ‘dialectical image’ and Rancière's notion of the ‘sentence image’ are invoked to capture the flashing together of past and present city images and the opportunities for critical reflection this constellation presents.  相似文献   

16.
Although entrepreneurship seems to offer a universal economic solution, there are some doubts about whether it is universally attractive. We argue that entrepreneurship is a socially constructed concept and consequently the meanings, and hence the appeal, of the enterprise will vary internationally. We argue that how entrepreneurship is understood affects how attractive it seems. Accordingly, we investigated the meanings of entrepreneurship by analysing a range of metaphors of entrepreneurship gathered from schools across Europe. We found that both the meaning and understandings of the practices vary considerably. For most, the concept of entrepreneurship as an engine of the economy is attractive, but for some, the practices of entrepreneurs were considerably less appealing. We find links between national socio-economic contexts and attractiveness. We argue that culture and context seem to influence the social constructions of entrepreneurship and hence the attractiveness of entrepreneurial options. We also find that the pedagogical national narratives of the entrepreneur stand in dynamic tension with the performative national processes of entrepreneurship.  相似文献   

17.
This essay on Shenzhen, China, presents three vignettes addressing the question of home in a city of migrants. The first section explores the ubiquitous narratives of success forming the city's foundational myth. The second follows this myth into the world of a Shenzhen filmmaker and his characters, as they navigate the tension between the idea of home and the urge to start anew, resulting in the suspended possibility of the title. The last section looks at young architects who hope to preserve the city's heterotopic sites of migrants and original villagers through architectural innovations. The cases show how an economy of desire supplements the political economy of this export-driven city. The city appears as an urban desiring machine that produces itself as an object of desire for the migrants of all classes who flock to its factories, "urban villages", white-collar jobs, luxury villas and underground economy. The essay is an encounter with the mythology of success and failure, the intertwining of home as an end and home as the beginning, and with the manipulation of space that allows residents to control their own subjectivity.  相似文献   

18.
This article addresses the enactment of public procurement and its influence on adoption and diffusion of innovation, using a case study of public procurement of a low-tech medical device innovation in Swedish healthcare. Based on interviews and documentation, the article illustrates the various perspectives of the different professions involved in the complex task of setting the requirement specification for the tender. The technology identities of the medical device (innovation) are constructed and negotiated by the actors: procurement administrators, health-care professionals and suppliers within the adoption space. Examining the enactment of the procurement process as part of the adoption space is a way to deepen our understanding of the social component within public procurement.  相似文献   

19.
This paper is concerned with the Bayesian estimation and comparison of flexible, high dimensional multivariate time series models with time varying correlations. The model proposed and considered here combines features of the classical factor model with that of the heavy tailed univariate stochastic volatility model. A unified analysis of the model, and its special cases, is developed that encompasses estimation, filtering and model choice. The centerpieces of the estimation algorithm (which relies on MCMC methods) are: (1) a reduced blocking scheme for sampling the free elements of the loading matrix and the factors and (2) a special method for sampling the parameters of the univariate SV process. The resulting algorithm is scalable in terms of series and factors and simulation-efficient. Methods for estimating the log-likelihood function and the filtered values of the time-varying volatilities and correlations are also provided. The performance and effectiveness of the inferential methods are extensively tested using simulated data where models up to 50 dimensions and 688 parameters are fit and studied. The performance of our model, in relation to various multivariate GARCH models, is also evaluated using a real data set of weekly returns on a set of 10 international stock indices. We consider the performance along two dimensions: the ability to correctly estimate the conditional covariance matrix of future returns and the unconditional and conditional coverage of the 5% and 1% value-at-risk (VaR) measures of four pre-defined portfolios.  相似文献   

20.
Abstract. This article presents a survey of theories of monopoly capitalism. The defining characteristic of monopoly capitalism is that developed capitalist economies are seen as essentially dominated by firms which operate in oligopolistic industries. It discusses in chronological order the contributions of Hilferding, Lenin, Kalecki, Steindl, Baran and Sweezy, and Cowling to the monopoly capitalism approach. By drawing out some common features of the authors discussed we arrive at an implicit view of the nature of theories of monopoly capitalism. The macroeconomic aspects of monopoly capitalism are discussed with emphasis on the implications for the level of economic activity. A further section discusses the international aspects of the monopoly capital approach. The final section of the paper reviews criticisms of the theories of monopoly capitalism with concentration on those advanced from a Marxist perspective.  相似文献   

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