With respect to the planning problems of electric vehicle charging stations in the urban area,the paper presents a planning model which considers the road network structure,vehicle flow information,distribution system structure and capacity constraints,etc.Under the relative constraints of distribution network,the model selects the station sites and plug-in locations with the objective of minimizing the sum of users' wastage cost on the way to the charging station and the investments of station lines,realizes the auto-partition of station service areas by the weighted Voronoi diagram,and also optimally allocates the station capacities based on the queuing theory.Finally,considering both the benefits of the power company and the electric vehicle users,the planning program optimization is finished by minimizing the costs of the whole society.The case studied shows that the presented methods and models are to some extent practical and reasonable to the optimal planning of electric vehicle charging stations in the urban area.

关键词：电动汽车，充电站规划;路网结构;分销网络

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The evolution and maturity of the wind industry have often been assessed by considering changes in key metrics including capital costs, capacity factor, turbine pricing, and in some cases electricity sales data. However, wind turbines and plants represent a complex system optimization problem and each of these metrics, in isolation, fails to tell the complete story of technological progress and industry advancement. By contrast, the levelized cost of energy (LCOE) provides a more comprehensive and nuanced perspective on industry trends. LCOE can be used to analyze the effect of individual changes (by holding other variables constant) or to understand the complex interactions that might occur for example between turbine costs and productivity. Moreover, LCOE offers a reflection of the total production costs and required revenue for wind plants. This presentation provides examples of how a narrow focus on individual industry metrics can provide inaccurate representations of industry trends while also demonstrating how LCOE captures the array of critical industry variables to provide a greater level of insight.

关键词：风力发电；成本；电力；优化；价格

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Power Line Communication (PLC) systems provide a bi-directional communication platform capable of delivering data for a variety of Smart Grid applications such as home energy management and intelligent meter reading and control. One benefit of applying power line communication on power grid is that it provides an infrastructure that is much more comprehensive and widespread than other wired/wireless alternatives. Power line cables are a shared medium, therefore multiple PLC devices operate on the same frequency over the same power line may interfere with each other, thus reducing the effectiveness of these devices. This publication introduces the coexistence mechanism for the IEEE and ITU-T BB-PLC standards, and provides implementation guidelines for PLC devices to be used for smart grid applications.

关键词：智能电网；宽带；通信网络；数据传输系统；

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Tobacco is a highly addictive substance with well-documented health risks. Although great progress has been made in reducing and preventing tobacco use in the United States, the rates of cigarette use and dependence remain high in certain subpopulations, including those with substance use disorders. For example, 2011 data show that an estimated 22 percent of U.S. adults are current cigarette smokers, whereas smoking prevalence rates for those in substance abuse treatment exceeded 70 percent between 2005 and 2009. The negative health effects of tobacco use among alcohol- and drug dependent individuals can be substantial. Individuals in substance abuse treatment smoke more heavily than the general population, and consequently are more likely to suffer from tobacco-related morbidity, including cardiopulmonary problems, emphysema, and cancer, than are smokers in the general population. One study of substance abuse treatment clients found that tobacco use caused more deaths than the alcohol or drug use that brought them to treatment; specifically, the rate of death among tobacco users was nearly 1.5 times the rate of death from other addiction-related causes.

关键词：吸烟；卫生服务；癌症；心肺疾病

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Within this chapter requirements engineering methods and models in context of Smart Grid development are outlined. First, the activities of requirements engineering and their integration into superordinate process models are introduced. Subsequently, the layered models of the GridWise Architectural Council and the Smart Grid Architectural Model (SGAM) are outlined. These cover viewpoints from business requirements to component specification and therefore may be used to structure Smart-Grid-specific requirements engineering activities. The application of the SGAM is illustrated by using the example of the Advanced Metering Infrastructure (AMI). Since the development of Smart Grids represents a long-term engineering effort, this chapter also introduces the concept of technology roadmaps to manage strategic goals and requirements. The assessment of technological and organizational progress in Smart Grid development complements this approach and is subsequently covered by the discussion of the Smart Grid Maturity Model (SGMM). The chapter concludes with a brief summary and references for further reading regarding inputs to the SGAM Layers.

关键词：智能电网；需求工程；流程模型；成熟度模型

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The Smart Grid is expected to increase the efficiency of the current power grid, to cope with volatile power production based on renewable resources, to reduce the need for fossil-based energy resources, and to guarantee the stability of power supply. To achieve these objectives, today's power grid is enhanced by information and communication technology to increase the information flow and to enable a sophisticated power production and power demand management. However, as the power grid is extended to a network of networks, it does not only become smarter, but also more vulnerable to security threats. This chapter discusses the current status and future developments of the Smart Grid and its challenges. Enhancements in terms of energy efficiency and new energy management approaches are covered as well as novel security challenges in different parts of the Smart Grid architecture. In short, this chapter analyzes some of the most striking risks and threats concerning the new Smart Grid infrastructure and discusses interdependencies between energy efficiency and security in the Smart Grid.

关键词：智能电网；可再生资源；信息流；电力需求管理

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Robots in extraterrestrial exploration traditionally faced difficulties in surface landings and flexible locomotion. Our project explored the viability of building robots around the tensegrity structural concept, which allows greater shock absorbance and flexibility by using isolated components held together through continuous tension. The study was separated into two parts: a physical prototype of a Super Ball tensegrity robot to test manufacturing viability and impact resilience in combination with a software simulation model to test control strategies and design concepts, such as position and number of actuators. This paper focused on the robustness of using software simulation models to predict the behavior of complex physical structures, such as the Super Ball tensegrity robot. Results included controlled locomotion simulations from a custom framework built on top of Bullet, a real-time physics simulation software, and initial rolling movement with a physical prototype. Software simulation models provided useful results for preliminary viability assessments, but should not replace physical prototyping, especially for complex structures. In conclusion, tensegrity robots could become promising alternatives to traditional rigid robots, which are more fragile and less flexible.

关键词：机器人;仿真模型;张拉整体结构;实时物理模拟

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Systems descriptions, costs, technical and market readiness assessments are reported for ten solar technologies: solar heating and cooling of buildings (SHACOB), passive, agricultural and industrial process heat (A/IPH), biomass, ocean thermal (OTEC), wind (WECS), solar thermal electric, photovoltaics, satellite power station (SPS), and solar total energy systems (STES). Study objectives, scope, and methods are presented. The cost and market analyses portion of Joint Task 5213/6103 will be used to make commercialization assessments in the conclusions of the final report.

关键词：太阳能；光伏电源；太阳能制冷系统；太阳能采暖系统

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By the third quarter of 2012, the United States had deployed more than 2.1 gigawatts (GWac1) of utility-scale solar generation capacity, with 4.6 GWac under construction as of August 2012 (SEIA 2012). Continued growth is anticipated owing to state renewable portfolio standards and decreasing system costs (DOE 2012a). One concern regarding large-scale deployment of solar energy is its potentially significant land use. Efforts have been made to understand solar land use estimates from the literature (Horner and Clark 2013); however, we were unable to find a comprehensive evaluation of solar land use requirements from the research literature. This report provides data and analysis of the land use associated with U.S. utility-scale ground-mounted photovoltaic (PV) and concentrating solar power (CSP) facilities. After discussing solar land-use metrics and our data-collection and analysis methods, we present total and direct land-use results for various solar technologies and system configurations, on both a capacity and an electricity-generation basis. The total area corresponds to all land enclosed by the site boundary. The direct area comprises land directly occupied by solar arrays, access roads, substations, service buildings, and other infrastructure. We quantify and summarize the area impacted, recognizing that the quality and duration of the impact must be evaluated on a case-by-case basis. As of the third quarter of 2012, the solar projects we analyze represent 72of installed and under-construction utility-scale PV and CSP capacity in the United States.

关键词：太阳能发电厂;土地使用;配置;光伏电源

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Fats is the general name given to a category of lipids usually referred to as acylglyc-erides, which are esters in which two or three fatty acids are bonded to a glycerol molecule forming monoglycerides, diglycerides, or triglycerides, respectively. The most common fats are triglycerides; these are triesters of glycerol and fatty acids, and can be solid or liquid at room temperature depending on their particular structure and composition. Although the names "oils," "fats," and "lipids" are widely used to refer to fats, the words oils and fats usually apply to lipids that are liquid and solid, respectively, at ambient temperature.

关键词：脂肪；脂肪酸键；甘油单酯；甘油三酯；甘油二酯

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