城市交通拥挤事件的模糊C均值聚类识别方法研究

交通拥挤事件是城市公共交通系统中造成交通延误的最主要原因之一,快速有效的识别拥挤事件是城市交通控制策略的重要环节。针对交通流相态及其交通因素类属方面存在的模糊性,本文在分析交通流特征时对其进行了聚类软化分。根据交通流特性,运用模糊C均值聚类算法对交通流各要素进行模糊分析处理。通过对交通量隶属度的判别和聚类分析结果,找出不同交通流间的亲疏程度和相似性,将具有相近特性的交通流归纳在一类,从而判别出交通流相态属性,确定交通拥挤事件的发生,达到对交通拥挤事件识别的目的。     

突发公共事件:绕不开的话题

人类文明在不断进步的同时,人类社会的复杂性和不可预见性也在与日俱增。现代社会在一定意义上可以说是风险社会。在人类的历史长河中,任何一个国家或地区都会面临这样那样的突发公共事件。特别是处于转型期的中国,面临着应对突发公共事件的严峻挑战。一、突发公共事件的界定和特征突发公共事件是从公共行政管理角度研究危机的专用术语,主要是指突然发生,造成或者可能造成重大伤亡、重大财产损失和重大社会影响,是对公共安全、社会稳定、国家政权有较大影响的突发公共事件或状态。突发公共事件大都具有危机的特质,或者说具有向危机事件转化…     

浅谈灰土挤密桩施工方案

灰土挤密桩在林地、山地等,填土高度超过4m的Ⅱ级自重湿陷性黄土场地,以及Ⅲ级自重湿陷性黄土场地施工中得到广泛应用,本文通过分析灰土挤密桩施工方案,阐述施工注意事项和质量控制及检验标准,进而对灰土挤密桩施工提供参考依据。     

民族地区工商部门应对突发公共事件之浅见

突发公共事件,是指突然发生,造成或者可能造成严重社会危害,需要采取应急处置措施予以应对的自然灾害、事故灾难、公共卫生事件和社会安全事件。近年来,随着我国民族地区突发公共事件发生频率的增加,对当地社会稳定和安全构成了严重威胁。因此,建立和完善适应民族地区突发公共事件的预警和防范机制,已成为民族地区各级政府部门应对和处理突发公共事件的一项重要任务。     

保险业在国家公共安全事件应急机制中的作用探讨

一、中国当前国家公共安全事件概况 国家公共安全事件是指突然发生,造成或者可能造成重大人员伤亡、财产损失、生态环境破坏和严重社会危害,危及公共安全的紧急事件.根据突发公共事件的发生过程、性质和机理,突发公共事件主要分为自然灾害、事故灾难、公共卫生事件和社会安全事件等.主要包括恐怖袭击事件,经济安全事件和涉外突发事件等.中国的公共安全问题十分严峻,每年因公共安全问题造成GDP损失高达6%,每年因公共安全事件使20万人口失去生命.这中间首要的问题就是安全事故率居高不下,屡屡发生的重特大事故更具突发性、灾难性和社会危害性.1990年至2002年,中国安全事故总量年均增长6.28%,最高时增长达22%.     

房企

正住房最挤香港人反对开发新区香港荣膺全球最拥挤的大都市,这里私人住宅价格之高据全球"最难负担"首位,政府公共"廉租房"的轮候册上也有近25万人在排队。但为房所苦的香港人,却反对新区开发。一方面,环保与经济发展的矛盾,填海造成海洋生态严重毁灭,新界东北的开发区域有许多是耕作菜田,开发将     

浅谈领导干部应对突发公共事件的能力

突发公共事件造成的直接影响不仅是人员伤亡和经济损失,其造成的间接影响同样不可忽视。我国每年因突发公共事件造成的损失惊人。领导干部必须具备应对突发事件的能力,才能担负着组织、指挥应对突发事件、确保公共安全的重要职责,只有掌握相应的应急管理知识,才能有效履行职责,保证党和国家的利益及其人民生命财产的安全。     

广州城市地铁突发公共事件应急能力评价指标体系研究

城市地铁应急管理是公共应急管理体系的重要组成部分。本文以广州市为实例进行研究,通过结合广州城市地铁突发公共事件应急管理的现实情况和应急管理相关理论,提出构建广州城市地铁突发公共事件应急能力评价的基本方法及步骤,提出应以地铁公司为主体、政府为主导的方针,结合地铁突发事件特点和地铁应急管理工作的实际情况,设计科学系统和实操性强的城市地铁突发事件应急能力评价体系框架。     

应对突发公共事件的领导艺术

领导者只有讲究领导艺术，艺术领导，才能有效地应对突发公共事件，提高政府保障公共安全和处置突发公共事件的能力，最大程度地预防和减少突发公共事件发生及其造成的损害，保障公众的生命财产安全，维护国家安全和社会稳定，促进经济社会全面、协调、可持续发展。     

突发性公共事件的报道视角分析

随着媒体业的发达和日益现代化,发生在世界上的每一个重大突发性公共事件均成为各类媒体追逐的焦点.媒体担负着关注突发性事件、及时和客观地公开突发性事件信息的重要职责,在政府和群众之间起着沟通的"桥梁"作用.所以,媒体报道突发性公共事件需要特别注意正确的舆论导向,把握好报道的"度".只有这样,才能协助政府稳妥有效地处置突发性公共事件.     

“慕课”和“微课”对独立学院师生教学行为影响探析

近年来,"慕课"、"微课"是教育领域最为热门的话题,独立学院是高等教育中的重要而特殊的组成部分,教学是独立学院的核心工作,那么,"慕课"、"微课"将怎么影响独立学院师生的教学行为呢?本文先对"慕课"的概念、特点、制作过程模型和优势,"微课"的概念、特征和开发过程模型,独立学院教学特点进行阐述,进而结合三者分析出"慕课"和"微课"将从教师的"教"和学生的"学"两个角度影响教学行为。     

Sense,nonsense and the S&P500

The theory of financial markets is well developed, but before any of it can be applied there are statistical questions to be answered: Are the hypotheses of proposed models reasonably consistent with what data show? If so, how should we infer parameter values from data? How do we quantify the error in our conclusions? This paper examines these questions in the context of the two main areas of quantitative finance, portfolio selection and derivative pricing. By looking at these two contexts, we get a very clear understanding of the viability of the two main statistical paradigms, classical (frequentist) statistics and Bayesian statistics.     

“协同教学”及“教考分离”在传热学教学过程中的可行性分析

传热学课程来源于生活,是一门应用性的专业基础课。以往的教学模式与考核方式单一而枯燥,一些学习基础相对较差的学生上课的积极性相对较弱,学习效果较差。本文对"协同教学"及"教考分离"相结合的课程教育体系在传热学教学过程中的可行性进行了分析,最后指出该模式和制度存在一定的风险,然而它是一种先进的教学理念和主流的教学模式。只要不断地尝试、创新、磨练,一定能发挥其应有的效果。     

Cities and the ‘War on Terror’

Programmes of organized, political violence have always been legitimized and sustained through complex imaginative geographies. These tend to be characterized by stark binaries of place attachment. This article argues that the discursive construction of the Bush administration’s ‘war on terror’ since September 11th 2001 has been deeply marked by attempts to rework imaginative geographies separating the urban places of the US ‘homeland’ and those Arab cities purported to be the sources of ‘terrorist’ threats against US national interests. On the one hand, imaginative geographies of US cities have been reworked to construct them as ‘homeland’ spaces which must be re‐engineered to address supposed imperatives of ‘national security’. On the other, Arab cities have been imaginatively constructed as little more than ‘terrorist nest’ targets to soak up US military firepower. Meanwhile, the article shows how both ‘homeland’ and ‘target’ cities are increasingly being treated together as a single, integrated ‘battlespace’ within post 9/11 US military doctrine and techno‐science. The article concludes with a discussion of the central roles of urban imaginative geographies, overlaid by transnational architectures of US military technology, in sustaining the colonial territorial configurations of a hyper‐militarized US Empire.     

Acquisition performance and the “Quest for the Holy Grail”

Olimpia Meglio and Annette Risberg investigate how researchers measure acquisition performance. I develop some complementary ideas that reinforce their conclusion: this issue is not another Quest for the Holy Grail; it simply highlights our research practices.     

Beyond the Global City Concept and the Myth of ‘Command and Control’

The article argues that the lack of convincing empirical evidence for the global economy as being subject to ‘command and control’ results from that contention being a neo‐Marxist myth. First, imagining the global economy as being subject to ‘highly concentrated command’ through the function of some major cities as ‘strategic sites’ for the production of ‘command and control’ is traced back through several neo‐Marxist authors to narrate its genesis, and to argue that the lack of evidence for that proposition is a consequence of those antecedents envisioning capitalism as a totalizing structure, thus making the assumption that it is subject to control and coordination from a distance. Second, Taylor's interlocking world city network model is forensically examined to explain that it is fallacious because it is a structuralism that, bedevilled by a sorites paradox, contains the further problem of containing no credible evidence for the existence of ‘command centres’. Finally, the article moves beyond neo‐Marxism's key concepts by juxtaposing their assumptions with ethnographic results from social studies of finance, a manoeuvre which forges an understanding of cities as socio‐technical assemblages and eventful multiplicities, beyond, inter alia, the baseless assumption that the global economy is subject to ‘command and control’.