Computational intelligence approach for uncertainty quantification using evidence theory

As an alternative or complementary approach to the classical probability theory,the ability of the evidence theory in uncertainty quantification(UQ) analyses is subject of intense research in recent years.Two state-of-the-art numerical methods,the vertex method and the sampling method,are commonly used to calculate the resulting uncertainty based on the evidence theory.The vertex method is very effective for the monotonous system,but not for the non-monotonous one due to its high computational errors.The sampling method is applicable for both systems.But it always requires a high computational cost in UQ analyses,which makes it inefficient in most complex engineering systems.In this work,a computational intelligence approach is developed to reduce the computational cost and improve the practical utility of the evidence theory in UQ analyses.The method is demonstrated on two challenging problems proposed by Sandia National Laboratory.Simulation results show that the computational efficiency of the proposed method outperforms both the vertex method and the sampling method without decreasing the degree of accuracy.Especially,when the numbers of uncertain parameters and focal elements are large,and the system model is non-monotonic,the computational cost is five times less than that of the sampling method.     

Design and implementation of ethernet passive electronic network over coax

To increase the limit of ethernet over coax （EoC） technology in the bidirectional reform of the hybrid fiber coaxial （HFC） network, an ethernet passive electronic network （EPEN） system based on Coax is proposed and experimentally demonstrated in this paper. The proposed EPEN exploits the existing capabilities of the MAC layer in the ethernet passive optical network （EPON） for reduction of cost of the HFC network. As the MPCP （multi-point control protocol） is introduced in the EPEN, bandwidth control and higher efficiency can be achieved. The experimental results exhibit the throughput of system up to 100Mbps, which meet the requirements of HFC network. To improve the performance of EPEN, frequency division multiplexing （FDM） can be used for further increase of the throughput and more hardware processing modules in the future. can be implemented to enhance the capacity     

“仁且智”与“由仁义行”:孔孟理想人格考论

传统文化往往笼统地以孔孟为一体,然而细究一下可知,孔子的理想人格是"仁且智",其理想人物应是周公;孟子的理想人格是"由仁义行",其最理想的人物应是舜。在理想人物从周孔到孔孟的转承中,孔孟理想人格呈现出推陈出新、互有交融的面貌。     

群的（λ，μ）-模糊同态

模糊同态作为模糊代数学的重要概念，是相应经典概念的推广，它可以由不同的模糊映射产生．本文提出了（λ，μ）-模糊映射的概念，并且利用该（λ，μ）-模糊映射给出了群的（λ，μ）-模糊同态的定义，从而研究了（λ，μ）-模糊同态下（λ，μ）-模糊子群间的对应关系及若干性质，最后建立了λ，μ）-模糊同态基本定理．     

变压器绕组光纤光栅温度传感器的优化设计

基于光纤光栅原理,研制了直接测量变压器绕组内部温度的光纤传感器,对传感器的封装工艺、材料进行了优化设计,解决了热力场和应力影响问题。经过温度标定实验,对光纤温度传感器进行了温度校准。现场实验表明,光纤温度传感器与电子传感器的测量温度能够保持较好的一致性和重复性,测量灵敏度小于0.1℃,测量精度可达到±0.5℃,满足变压器绕组内部温度的实时在线检测要求。     

中国获得世界田径大赛奖牌特征分析

运用文献资料、数理统计、逻辑分析等研究方法,对中国获得奥运会、世界杯、世锦赛的田径奖牌的数量变化特征、区域分布特征、获奖项目特征、运动员性别及年龄特征等进行分析.结果表明:中国获得国际田径大赛的奖牌数量呈"N"型分布;奖牌主要分布在辽宁、上海、浙江、黑龙江、江西、云南等区域;获奖运动员"阴盛阳衰"现象较为严重;获奖年龄整体偏小,24岁最为集中;获奖项目主要有竞走、中长跑、投掷和短跨等.     

谶纬与汉代神仙术的演变简

现存纬书文献中保存了不少神仙资料，这些资料生动地展现了当时神仙思想发展演变情形。纬书文献表明，西汉后期求仙人、仙药的成仙术逐渐为服食术所取代，服食对象极广，并且形成一定体系。方士杜撰司过之神，将善恶报应说改造为积善长生说；受到谶纬符应思想影响，符一变为天命符应，再变为道法、道术的象征。因此，谶纬神仙术可视为早期方仙术向道教神仙术演进的过渡桥梁，并对道教神仙术体系的形成产生很大的影响。     

中型氮肥厂甲醇系统DCS改造

随着我国生产力水平的提高以及科学技术的发展,工业的智能化水平也日益提高。原先由国外品牌垄断的工厂集散控制系统（DCS）,也面临着民族工业品牌的挑战,如浙大中控,和利时等。这些逐渐崛起的民族品牌,以其良好的性价比,优秀的产品质量,简单的应用维护等特点迅速占领国内市场。我厂于09年系统改造项目中便是使用了中控集团的ECS-100系统,在开车后系统稳定,为长周期运行奠定了基础。     

中小企业增值税纳税筹划技巧研究

为提高企业的经济效益,合理降低企业的税收负担,中小企业应适当进行增值税纳税筹划.树立正确的纳税筹划观念,明确划分纳税筹划和偷税漏税的区别,引进高素质的会计人才.在中小企业领导的支持下,与税务机关建立协调关系,采用合理的增值税纳税筹划方法,以减少或延缓销项税额的确认,以及进项税额转出的时间.