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21.
针对大气污染呈现出的复合型、流动性和跨区域的特点,将地方政府在大气污染联合防治中的相互影响总结为“同向外部效应”和“部分排他效应”,应用演化博弈分析法,剖析地方政府之间大气污染联合防治的演化过程和演化结果。研究结果表明:地方政府治污成本的降低、对不治理污染地方政府惩罚力度的加大、地方政府治理大气污染效果的提高、地方政府不治理大气污染可见性的提升、大气污染治理外部性的减弱等都有助于演化博弈的稳定策略向地方政府跨区域联合防治的方向演进,从而有助于提升大气污染的治理效果,达到改善生态环境的目的。  相似文献   
22.
解决空气雾化钻井井眼净化问题,试验架是关键装置、基础设备和必要手段。对空气雾化钻井试验架的研制过程进行了深入剖析,介绍了在试验架研制中应遵循的一些基本原则,试验架基本结构,试验架主要参数,试验结果可靠性分析,试验研究进行情况,以及研制过程中的经验教训等内容,体现了空气雾化钻井试验架研制工作的特点与特色。  相似文献   
23.
根据《电力工程基础》的课程特点,从教学目标、教学内容、教学方法和考核方式等方面对课程教学进行了全面的改革和探索,并深入探讨了翻转课堂教学模式,运用讲授、讨论和启发相结合的课堂教学形式,引入工程案例分析,发挥传统教学方式和现代教育技术的优势等问题。通过教学实践,该教学改革已取得很好的教学效果。  相似文献   
24.
In this article, an agent‐based framework to quantify the seismic resilience of an electric power supply system (EPSS) and the community it serves is presented. Within the framework, the loss and restoration of the EPSS power generation and delivery capacity and of the power demand from the served community are used to assess the electric power deficit during the damage absorption and recovery processes. Damage to the components of the EPSS and of the community‐built environment is evaluated using the seismic fragility functions. The restoration of the community electric power demand is evaluated using the seismic recovery functions. However, the postearthquake EPSS recovery process is modeled using an agent‐based model with two agents, the EPSS Operator and the Community Administrator. The resilience of the EPSS–community system is quantified using direct, EPSS‐related, societal, and community‐related indicators. Parametric studies are carried out to quantify the influence of different seismic hazard scenarios, agent characteristics, and power dispatch strategies on the EPSS–community seismic resilience. The use of the agent‐based modeling framework enabled a rational formulation of the postearthquake recovery phase and highlighted the interaction between the EPSS and the community in the recovery process not quantified in resilience models developed to date. Furthermore, it shows that the resilience of different community sectors can be enhanced by different power dispatch strategies. The proposed agent‐based EPSS–community system resilience quantification framework can be used to develop better community and infrastructure system risk governance policies.  相似文献   
25.
在航空货运市场竞争日趋激烈的环境下,基于竞争的收益管理问题已经成为管理科学界的研究热点之一。针对竞争条件下的两个航空货运公司两个舱位的容量控制问题,利用博弈论的方法,建立了代理市场和现货市场并存时两公司两子舱的水平竞争的三方博弈模型,并详细分析了在 Stackelberg博弈中货运代理商的最优订购决策以及两个航空货运公司在 Cournot 博弈中的最优反应函数的性质。结果表明:如果在位者不在代理市场上销售运力,那么进入者也绝对不会提供代理市场的舱位,也就是说,如果在位者没有动力提供代理市场的运力,则代理市场将不会存在。  相似文献   
26.
通过在雾霾严重时期收集的大规模问卷调查数据,建立了雾霾感知风险等因素与应对行为之间关系的结构方程模型.分析显示,对环境信息越敏感、雾霾感知风险越大、对雾霾知识了解越多、雾霾感知可控性越大的公众会采取更多的防护与应对措施,他们对相关防护产品的购买意愿也越强.特别是,感知风险在环境信息与应对行为以及环境满意度之间起着重要的中介变量作用,即当雾霾污染引起人们的感知风险时,会促使他们采取更多的应对行为,并且对环境满意度评价产生负面影响.另外,雾霾感知可控性在雾霾知识熟悉度与应对行为以及环境满意度之间起着部分中介变量的作用.  相似文献   
27.
This work emerged from the need to better plan the daily work of 29 travelling service agents, who provide 1090 services to 412 customers in 283 sites, on daily average. A handy and flexible tool was developed and is presented herein. A major contribution of this study is an explicit consideration of the multi-dimensional nature of the problem by the inclusion of workload balancing, which may stand in conflict to cost minimisation. Further, the geographical distribution of the demand is highly irregular. Therefore, two load measures are required and balanced. This required to fitting a proper planning scheme. The planning tool has been applied successfully by the commercial service provider. Improvements in the order of 20% and more were obtained in key performance measures. Moreover, cost reductions, service improvement and load balance were obtained simultaneously: the standard deviations of the service times and working day’s duration were reduced by 18 and 58%, respectively. This enables to reduce the number of agents with no significant harm in performance. Additional practical advantages of the proposed tool are also discussed and demonstrated, for example, the ability to cope with geographical distributions and the flexibility to respond to daily variations in demand.  相似文献   
28.
絮凝床是中山大学开发的一种新型水处理设备.这种水处理技术在我省已用于包括含动、植物油类的污水处理工程中,1996年我院首次把这种设备用于茂名热电厂合油(矿物油)污水处理,工程建成投产以来取得了令人满意的效果。  相似文献   
29.
The performance of a tandem automated guided vehicle (AGV) system is compared with that of conventional AGV track systems. In the tandem system the track is divided into non-overlapping, single-vehicle closed loops. Using simulation it is shown that, because of trips requiring delivery across loops, the tandem system has a higher expected travel time per load and thus a greater average time in system. When the loads are delivered within the original loop only, the tandem system has a lower average time in system than in conventional systems, although the difference is modest. Track layout appears to influence the average time in system much more than docs the dispatching rule invoked. The success of the tandem system is highly dependent on approximately even AGV utilization, which may be difficult to obtain in practice.  相似文献   
30.
Inequality indexes have long been used to analyze distributions of income. Studies have recently begun to use these tools to evaluate the equity of distributions of environmental harm. In response, issues have been raised regarding the appropriateness of using income-based measures in the context of undesirable outcomes. We begin from first principles, identifying a theoretical preference structure under which income-based tools can be appropriate for ranking distributions of “bads.” While some critiques of existing applications are valid, they are not a justification for rejecting the approach altogether. Instead, we show how standard income-based measures can be adjusted to accommodate bad outcomes. Rather than inequality indexes, we argue that equally distributed equivalents (EDEs) are well-suited for this purpose since they account for levels and dispersion of outcome distributions. The Kolm–Pollak EDE is particularly useful, having the advantage of consistently evaluating both bads and their complementary goods (e.g., mortality risk and survival probability). As an illustration, we show how these tools can inform an environmental justice analysis of a proposed Environmental Protection Agency (EPA) rule addressing indoor air pollution.  相似文献   
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