ZigBee技术在火灾自动报警系统中的应用

随着我国经济的快速发展,国家越来越重视现有的专业性的有线火灾报警系统的管理和控制,为了进一步的提升火灾报警系统中的信息传输管理效率,及时有效地发现和分析火灾的实际情况,必须要提高建筑物的防火能力。因此,论文主要针对现阶段的ZigBee技术在火灾自动报警系统中的应用进行简要分析,并提出合理化建议。     

各类火灾探测器原理分析及应用探讨

火灾探测器能在火灾发生初期,将燃烧物产生的烟雾、热量、火焰等物理量变成电信号传输到火灾报警控制器,是现代消防系统的核心部件。文章通过对各类火灾探测器的工作原理进行分析,并对其应用场合进行探讨,为火灾自动报警系统的设计、施工与运行维护提供参考依据。     

FIRE SALES FORENSICS: MEASURING ENDOGENOUS RISK

We propose a tractable framework for quantifying the impact of loss‐triggered fire sales on portfolio risk, in a multi‐asset setting. We derive analytical expressions for the impact of fire sales on the realized volatility and correlations of asset returns in a fire sales scenario and show that our results provide a quantitative explanation for the spikes in volatility and correlations observed during such deleveraging episodes. These results are then used to develop an econometric framework for the forensic analysis of fire sales episodes, using observations of market prices. We give conditions for the identifiability of model parameters from time series of asset prices, propose a statistical test for the presence of fire sales, and an estimator for the magnitude of fire sales in each asset class. Pathwise consistency and large sample properties of the estimator are studied in the high‐frequency asymptotic regime. We illustrate our methodology by applying it to the forensic analysis of two recent deleveraging episodes: the Quant Crash of August 2007 and the Great Deleveraging following the default of Lehman Brothers in Fall 2008.     

论森林火灾的预防与扑救措施

根据森林火灾发生的特点,分析火灾发生前后预防与扑救的主要矛盾,在森林火灾预防和扑救阶段,应采取不同的应对措施。按照预防为主、积极消灭的方针,在预防中重宣传教育,发动群众,抓责任落实;在消灭中注重科技手段和措施到位。     

综采面火区治理与回撤的经验探讨

煤层自燃发火已严重影响和制约了煤矿的安全生产,造成不可估计的经济损失,如何有效的治理和控制火区是煤矿安全生产的重要课题,本文主要谈了在治理火区的同时进行工作面回撤的一些经验和做法。     

试论消防“网格化”巡防工作体系的建立

本文通过介绍如何建立消防网格化巡防工作体系,并对开展网格化巡防的现实意义进行了阐述,希望对以后的消防工作起到积极的指导作用。     

浅析火灾自动报警系统使用中存在的问题

本文通过对城市现有的一些现代化建筑内的火灾自动报警系统的现状以及将来发展的趋势进行分析,找出对火灾自动报警系统使用、管理、维修以及重视程度等方面的弊端,提出一点相关的解决办法。     

烟熏痕迹形成过程及其证明作用

本文以火灾从起火点蔓延至整个建筑的不同阶段为时间线索,着重叙述烟熏痕迹形成过程。其中详细阐述了烟熏痕迹的形状、分布、浓重程度等特征。在火灾调查中充分考虑这些特征,有助于准确利用烟熏痕迹证明火灾事实。     

谈火灾自动报警及联动控制系统的设计

以某公司极薄涂镀板深加工工程为例,根据不同保护对象选用不同的火灾探测器,从而进行火灾自动报警及联动控制系统的设计,使整个系统具有组成灵活性、性能优越性、工作可靠性。     

The Effectiveness of Delhi's Fire Safety Regulation Amidst Poverty,Ignorance, Corruption and Non‐Compliance

This paper considers the effectiveness of fire safety regulation in Delhi, India. Ten theories are summarised that are used to explain why regulation does or does not work, or why fires might increase. Can imperfect markets generate institutions outside of the political process that produce reasonable results despite challenges of poverty, rising population density, social chaos, widespread corruption and non‐compliance with rules? In Delhi, city fire departments, albeit hampered by dysfunctional or non‐existent regulation, along with social and individual incentives provided by markets, have produced a relatively high level of safety.