考虑V2G模式的电动汽车与可再生能源协同调度

为减小地区电网负荷峰谷差,增强电力系统接纳可再生能源的能力,同时提高电动汽车用户响应积极性,以地区电网等效负荷波动最小和用户充电费用最低为目标函数,建立了考虑电动汽车与电网互动(vehicle-to-grid,V2G)模式并计及风电和光伏出力的多目标协同调度模型,以合理安排电动汽车的充放电行为.定义了各目标的隶属度函数,通过运用最大模糊满意度法,将该多目标优化问题转化为单目标非线性优化问题,并应用自适应权重粒子群寻优算法进行求解,得到最优调度方案.算例结果验证了模型的有效性和求解方法的可行性.     

QUO VADIS FUZZY SYSTEMS: A CRITICAL EVALUATION OF RECENT METHODOLOGICAL TRENDS

The paper critically examines some foundational aspects of Fuzzy Sets and Systems. The systemic character of Zadeh's approach is stressed, as is the neccessity of understanding the interplay of holism and atomism for the proper evaluation of the formalized epistemology of fuzzy sets. This link between holism and atomism is provided by the systemic epistemology of T. G. Masaryk, adumbrated in Sec. 2. The linguistic theories of the Prague School, which are based on the epistemology utilizing the notions purpose, function, communication, meaning, normative structure etc. are also discussed, and their relevance to the methodology of Fuzzy Sets and Systems is stressed. Section 5 is devoted to formal analysis of possibilistic constructions and structures. It is demonstrated that the so called “Theory of possibility” is just one special instance of the general possibilistic construction.

The paper of Zelený, appearing elsewhere in this issue, is critically evaluated, as is the Graham-Johnstone controversy. The latter contained heated discussions about pros and cons of research concerning fuzzy sets. The phenomenon of the epistemological and methodological split within the field of fuzzy systems (which I refer to as “The schism of the third decade”) is observed and its causes briefly analyzed.     

RFID读写技术在户外广告互动中的应用

应用针对户外广告屏的单向传播模式进行改进,运用RFID技术、3G技术及互联网技术的融合创新,设计出一套切实有效的广告互动屏应用模式,变广告单向传播为线上与线下的即时互动.以RFID芯片为用户媒介,将广告内容下载到手机当中,实现广告与用户的交流,并以数据库技术将信息储存,进一步提高广告投放的精准性.主要介绍该应用的业务模式与读写器设计.     

Captured Kriegsmarine Enigma Documents at Bletchley Park

Abstract

The discovery of intercepts in the Japanese “Orange Translations” regarding the sinking of merchant ships (marus) bearing allied POWs led to the conclusion that the Joint Intelligence Center Pacific Ocean Area (JICPOA) gave latitudes and longitudes of these vessels to the Commander, Submarine Force, Pacific (ComSubPac) knowing that POWs would be killed. An examination of the “Orange Translations” reveals that most of the intercepts are from the Japanese Water Transport Code (2468) system, not the “Maru Code” (JN-11). The author concludes that while JICPOA provided ComSubPac with convoy coordinates, they were unaware of the presence of POWs on the marus.     

Boundary‐Aware Extinction Mapping

We introduce Boundary‐Aware Extinction Maps for interactive rendering of massive heterogeneous volumetric datasets. Our approach is based on the projection of the extinction along light rays into a boundary‐aware function space, focusing on the most relevant sections of the light paths. This technique also provides an alternative representation of the set of participating media, allowing scattering simulation methods to be applied on arbitrary volume representations. Combined with a simple out‐of‐core rendering framework, Boundary‐Aware Extinction Maps are valuable tools for interactive applications as well as production previsualization and rendering.     

G2 Continuity for Multiple Surfaces Fitting

Fitting 3D known data into sculptured surfaces has received extensive attention. However, most algorithms available are suitable only for an isolated surface. A part typically contains multiple surface regions that must be blended to a degree of continuity. The conventional approach based on blending, lofting, stitching, etc. cannot guarantee the quality of the surface near the jointed area. The purpose of this work is to present a surface-fitting algorithm for multiple sets of data, concentrating on G 2 continuity across the boundary of the fitted surfaces. The proposed surface-fitting algorithm essentially fits several sets of data simultaneously, and yields a B-spline surface for each set of data. The G 0 ,G 1 , and G 2 continuity conditions between B-spline surface patches were addressed. Based on these results, additional constraints were specified to achieve G 2 continuity across the surface boundary. A successful demonstration of the proposed strategy is provided also.     

采用G标准衡量刀具系统平衡存在的问题及解决方法

在高速切削时,由于刀具或刀柄的不平衡而产生的离心力会使机床产生振动,从而影响工件的加工精度和表面质量以及影响主轴轴承和切削刀具的使用寿命,因此,进行刀具系统的平衡尤为必要.目前,对于旋转体的平衡,其衡量标准通常采用G标准.通过分析G标准衡量刀具系统平衡时存在的种种问题,同时也给出了其解决办法.     

TD—SCDMA商用运营及其战略意义

介绍了TD-SCDMA在我国运营的发展情况、战略意义和运营现状,阐述了TD-SCDMA运营取得的主要成就,分析了TD-SCDMA运营存在的优势、问题和未来发展趋势。     

Energy management in metro-transit systems: An innovative proposal toward an integrated and sustainable urban mobility system including plug-in electric vehicles

The energy consumptions growth, the upward interest for environmental sustainability and the technological evolution carry to the necessity to review the planning criteria of urban mobility systems in large cities and metropolitan areas. With this aim, new studies and projects are in progress, especially dealing with the power systems for metro-transit lines and surface electric vehicles. In this framework, the authors perform a study that, from an overview about the main energy management issues connected to the city transport, provides an innovative proposal for the design of sustainable urban mobility system: the integration of the metro-lines with surface plug-in electric vehicles. The present paper includes the energy analysis results, obtained by an application on a real case study of an home-made simulation software, describes the proposal in terms of power systems architecture and business models, pointing out the potential advantages that its implementation could give in terms of energy saving, environmental sustainability and reduced economic impact, as a result of the maximum exploitation of existing electric power plant.