无线数据传输技术在列车安全监控系统中的应用

笔者将GSM网的无线数据传输技术成功应用到列车安全监控系统中 ,系统监测数据经转储发送系统中转 ,由移动台系统实时、无线传输到基站微机系统 ,通过VC ++语言编制的软件系统实时统计分析数据 ,来监控列车运行状况 ,达到列车安全运行的目标。在列车安全监控系统中 ,不仅实现了数据无线实时传输 ,而且提高了工作效率和减轻了工作强度。在济南铁路局装车试验并广泛使用 ,表明了无线数据传输技术应用到列车安全监控系统中具有较高的可靠性和实用性     

Environmental Comedy: No Impact Man and the Performance of Green Identity

“No Impact Man” (NIM) Colin Beavan attracted international media attention and a good deal of criticism for his year-long experiment attempting to live making zero net impact on the environment. Whereas Beavan's critics dismissed the project as a mere publicity stunt, this essay reads the NIM blog, book, and documentary film as a compelling performance of green identity in the comic frame. This performance—which links private consumption to ecology and community, and emphasizes flaws, foibles, humor and humility—offers an appealing invitation to engage in both individual and collective action. I argue that comedy is a useful rhetorical tool for addressing global warming, as it enables us to see ourselves not as helpless victims in a tragic doomsday scenario, but as imperfect actors who are both guilty contributors to the problem and agents responsible for its amelioration.     

Environmental Health Policy: Analytic “Framing” of the Great Lakes Picture

/ The International Joint Commission (IJC) has overseen the implementation of the Great Lakes Water Quality Agreement between Canada and the United States for 25 years. Part of its mandate has been to facilitate international cooperation among a diversity of stakeholders focusing on the "waters" and the "ecosystem." In the 1970s policy focused on phosphorus reduction and individual contaminants, with some efforts (after 1978) to take an ecosystem (ecological perspectives) approach. In the last 15 years human health effects from (real and perceived) environmental causes have received considerable recognition. By contrast, less concern has been expressed for what is traditionally considered "environment" issues (such as protecting fish species). This shift at the policy level is well illustrated in the manner in which human health is increasingly used as a way for mobilizing environmental agendas. This paper analyzes nine IJC biennial reports to track how the framing of Great Lakes issues has shifted from concern for its waters to concern for human neurobehavior and reproductive systems. Frame analysis is used to conceptualize the controversies that are expressed through the Great Lakes policy documents. The analysis of the reports also reveals a shift in operational frames, used by the IJC to mobilize decision-makers into action.     

生态企业的构架与考核指标的探讨

从论述生态企业的构架———经营思想、理念、生产方式、环境管理、环境建设入手 ,对生态企业创建的考核指标进行了探讨 ,提出了五个方面共 2 5项指标的考核体系 ,为生态企业的创建及验收提供了依据。     

Greenwashing Consumption: The Didactic Framing of ExxonMobil's Energy Solutions

Corporate advertising campaigns increasingly use environmental frames to promote their products and processes, many of which are neither sustainable nor environmentally friendly. This study examines ExxonMobil's recent efforts at green advertising, focusing specifically on their widely aired “Energy Solutions” television advertisements. We argue that ExxonMobil's use of a didactic, greenwashed frame stifles criticism and discourages examination of ideologies of consumption by exploiting the ethos of the scientist and highlighting technological solutions to problems that are deeply tied to a culture of consumerism. The definition of green energy is controlled by those with the power to generate persuasive public messages about the sources and production of energy. Counterframes, however, can be employed to turn a questioning eye upon the solutions advanced by ExxonMobil. We issue a call for green frames that help citizens and consumers critically examine the ecological integrity of all means of energy production, and that call attention to the ways in which the greenwashing of research and development initiatives can dissuade necessary action, including reduction of US energy consumption.     

Beyond Frames: Recovering the Strategic in Climate Communication

Recent calls for communication scholars and practitioners to identify effective communication means for mobilizing constituencies to address climate change often fall to distinguish between communicative acts that “mobilize” and mobilization that enables a particular end. The latter presupposes an account of the intentional or strategic alignment of mobilization, that is, the predicted or assumed relationships among a mobilized public, the mode(s) of influence or leverage this creates, and the expected consequences of such influence, i.e., how specific communicative efforts are related to outcomes or “effects” within a system. This essay argues that the neglect of strategic alignments in some recent climate communication campaigns have caused these campaigns to be non-adaptive at the scale and/or urgency required. Drawing on case studies of the 2007 Step It Up initiative and the Sierra Club's “Beyond Coal” campaign, the essay proposes viewing the strategic as an heuristic for identifying openings within networks of contingent relationships and the potential of certain communicative efforts to interrupt or leverage change within systems of power.     

铁路道口安全与框构桥设计软件实现

铁路平交道口是铁路运输中常发生列车和汽车事故的地方 ,在列车经过平交道口时 ,汽车和行人等都必须停在道口两侧 ,严重地影响了交通安全 ,甚至有火车与熄灭在道口的汽车相撞 ,造成火车脱轨的重大事故。因此 ,平交道口改为立体交叉已势在必行。笔者提出了将平交道口改建为框构桥的设计方法 ,并用面向对象的程序设计方法实现了框构桥的自动设计、分析、计算及绘图等过程 ,将极大提高框构桥设计的工作效率 ,加快平改立的速度 ,尽快消除安全隐患     

斜撑框架结构弹塑性地震反应计算分析

运用结构弹塑性时程分析的基本原理 ,针对钢筋混凝土斜撑框架结构的特点 ,编制了斜撑框架结构弹塑性时程分析程序。然后以工程中常用的 3种类型的斜撑框架结构为研究对象 ,对该种结构体系在地震波作用下的反应进行了计算 ,并对该种结构体系在地震波作用下的反应性能进行了分析。计算结果表明 :斜撑形式对斜撑框架结构的动力特性有较大影响 ,不同斜撑形式的斜撑框架结构在地震波作用下的反应特性有较大的不同。     

建立在GIS平台上的环境应急监测管理系统模型设计——以廊坊市为例

以廊坊市为例研究了以GIS技术系统为支持平台的环境应急监测管理系统(EEMMS),结合实际给出了该系统的框架模型。EEMMS系统模型的应用可为突发性环境污染事故应急监测提供快速、可行的工作方法和模式,为环境事故应急指挥系统决策提供及时、有效、科学的技术支持。     

Perceptions, attitudes and interest of Swedish architects towards the use of wood frames in multi-storey buildings

Use of wood frames from sustainable forestry instead of non-wood frames in multi-storey buildings can reduce primary energy use and carbon dioxide emissions in construction. However, construction actors might have different perceptions towards wood frames than towards steel and concrete frames. Such perceptions may influence the actors’ decision to adopt wood frames. In this study we use a web-based questionnaire to assess Swedish architects’ perceptions, attitudes and interest towards steel, concrete and wood frames in multi-storey buildings (n = 412). Results indicate that the responding architects find concrete the most suitable frame material in buildings of 3-8 storeys, mainly because of the performance of concrete with regards to the engineering aspects (e.g. stability and fire safety) that were considered important in the choice of frame material. Although wood is considered the least suitable frame material, the overall attitude towards, and interest in, using wood is positive and related to the perceived environmental benefits of wood. This may derive from an increased discussion of and information about the environmental impact of buildings. Wood may be perceived as new and innovative while not considered as adequately proven as steel and concrete with regards to engineering aspects.