The utilization of information and intelligent technology promotes the development and innovation of the safety industry, which is also a research hotspot in recent years. This study analyzes the characteristics of information flow in the safety management process and proposes an intelligent safety management mode with edge intelligence from the perspective of safety informatics (SI). The principles of lagging and deviations in safety decisionmaking caused by undesirable functional realization and blocked information flow in the safety management process are analyzed, together with concrete ways to empower traditional safety management mode. Furthermore, a multi-level edge-intelligent management (MLEIM) mode is established, which is characterized by intelligence, agility, flexibility, and unity. Elaborate solutions for implementing MLEIM at three key technical levels are described, and a performance evaluation system is built. An empirical study on the application of MLEIM in the continuous-casting process of Daye Special Steel Co., Ltd. is provided, and the performances of responding to safety events are calculated and compared between different management modes in emergency, short-period, and long-period control scenarios. The results indicate that the proposed MLEIM mode can significantly reduce time delay, promote human-machine interaction, and improve the efficiency of safety management.
In order to understand the law of temperature change inside the tent, the personnel required clothing insulation（IREQ） and the risk of hypothermia in a cold environment, the national standard disaster relief tent and epidemic prevention tent were used to carry out experimental research in the environment from-10 to 10 ℃ using the thermal manikin to explore the thermal insulation performance of different types of tents. The empirical formula was used to evaluate the thermal comfort of personnel inside the tent. The improvement effect of the heated clothing on the body area was analyzed according to the thermal resistance of clothing on the heat exchange process between people and the environment influence, the temperature change of various parts of the thermal manikin. Research shows that: the national standard disaster relief tent has better insulation performance than the epidemic prevention tent, and the difference was greater when the temperature was lower. The thermal comfort of people inside the tent decreases with the temperature, and the floor temperature has a great impact on the local dissatisfaction rate of the human body. When the clothing thermal resistance was lower than the demand thermal resistance, the temperatures of the left forearm and right calf of the thermal manikin decrease the most, by 4.7 ℃ and 5.3 ℃, respectively. When the heating suit was turned on, the clothing temperature of the covered area rose significantly. When the ambient temperature dropped to-10 ℃, the temperature of the thermal manikin still dropped significantly in all areas, even when the 45 ℃ heating gear was turned on, with dropped by 5.3 ℃ in the left forearm and around 6.5 ℃ in the right forearm.
为提高我国灾害事故应急救援能力,借鉴军事作战理念,构建应急救援数字化战场体系,结合应急救援战术互联网、现场数字化全息感知、态势推演与智能辅助决策、可视化指挥与协同作战等数字化救援技术的实战应用能力,建立天空地一体化应急通信保障体系和情指行一体化应急指挥作战体系,并在应急使命演习中验证实战效能,破解复杂灾害现场应急救援工作中存在的通信保障难、情报决策难、态势研判难、指挥调度难、作战协同难等实战难题,实现科学、高效、精准救援.研究结果表明:应急救援数字化战场体系建设打造单兵数字化、战场网络化、指挥可视化、救援智慧化的新型应急救援模式,系列化技术装备和系统平台投入实战应用,有助于提升我国灾害事故救援通信保障、现场感知、辅助决策和指挥调度能力.
数字化已经成为当今社会信息资源管理的主流趋势.数字图书馆的出现和发展是数字化在图书馆领域的具体应用.数字图书馆具有方便快捷、不受时空限制等特点,能够满足用户多样化的阅读需求,因此,越来越受到用户的青睐.然而,随着数字图书馆规模的不断扩大,信息安全问题也日益凸显.为了保障数字图书馆的信息资源安全,提高信息服务质量,各国纷纷制定了相关的信息安全管理标准规范.制定数字图书馆信息安全管理标准规范是我国对数字图书馆发展及其信息安全管理领域的一种积极探索.
为探究裂隙倾角对三山岛金矿多裂隙围岩流热耦合的影响,基于三山岛海底矿体测量数据建立多裂隙围岩流热耦合模型,应用COMSOL Multiphysics将三维裂隙降维简化,分析裂隙倾角在流热耦合过程中对渗流场中裂隙出口流量、渗流速度以及对温度场中的传热时间、温度分布、裂隙出口温度的影响.结果表明:离散裂隙的倾角对渗流场和温度场有明显的控制作用.地热水的渗流速度随着与入口处距离的增加总体呈现先减小后平稳流动最后增大的趋势,随着时间的推移裂隙出口流量皆呈现出不断减小的趋势;裂隙围岩距离巷道越远温度越高,不同裂隙倾角附近围岩的等温线分布明显不规则.
