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Search Results: 1 - 10 of 62125 matches for " 姚强 "
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考虑可控负荷停电成本的微电网经济调度策略
Microgrid Economic Dispatch Considering Outage Costs of Controllable Load
 [PDF]

杨林, 杨磊,
Transmission and Distribution Engineering and Technology (TDET) , 2015, DOI: 10.12677/TDET.2015.44007
Abstract:
微电网中的负荷具有灵活而易于控制管理的特点。将负荷积极参与到微电网调度计划中,可以有效提高微电网运行的经济性。本文根据影响可控负荷停电成本的各要素,建立可控负荷停电成本模型,并将其与常见的微电网调度模型结合,制定了多时间尺度下的考虑可控负荷停电成本的微电网经济调度方案,有效地将可控负荷参与到微电网经济调度中。通过对其进行仿真分析,验证了该方法的合理性和有效性。
The loads in microgrid are flexible and easy to control. The economical operation of microgrid would become more economic by loads actively participating in. A cost model of controllable load was built based on factors affecting the outage costs. Combining it and the traditional microgrid operating model, a multi-time scale microgrid operating model was constructed, engaging controllable loads in the operation effectively. By simulation analysis, the rationality and validity of the model were proved.
电场对火焰形状及碳烟沉积特性的影响
王宇,
工程热物理学报 , 2007,
Abstract: 建立了三种类型的直流电场分别作用于层流扩散火焰,研究了电场类型、电场强度对火焰形态及所产生的碳烟颗粒在电极上的沉积特性的影响.实验表明,针状电极由于离子风的作用会使火焰高度变短;平板状电极由于电场力的作用可使火焰顶部向阴极板倾斜,证明了有一部分碳烟颗粒本身荷正电。同时,由于环形电极同时产生离子风和电场力,影响火焰形态。而荷正电的中心电极对碳烟颗粒的排放起到抑制作用。
拉莫三嗪联合丙戊酸钠治疗脑卒中继发性癫痫的疗效分析
,
药物评价研究 , 2015, DOI: 10.7501/j.issn.1674-6376.2015.04.013
Abstract: 目的 探讨拉莫三嗪联合丙戊酸钠治疗脑卒中继发性癫痫的效果。方法 脑卒中继发性癫痫患者98例按照随机数字表法分为治疗组与对照组各49例,两组都给予脑卒中常规治疗,对照组予口服丙戊酸钠,治疗组在此基础上予拉莫三嗪。记录发作情况、发作次数及每次持续时间,监测药物不良反应。治疗期间每月随访1次,复查血、尿常规,血电解质,血脂,肝肾功能等。结果 治疗后治疗组的总有效率为95.8%,对照组为76.6%,治疗组的总有效率明显高于对照组(P0.05)。结论 拉莫三嗪联合丙戊酸钠治疗脑卒中继发性癫痫能提高治疗效果,促进癫痫症状的消失,不良反应少,值得推广应用。
基于二维正交滤波的虹膜识别算法
, 鹏?
计算机科学 , 2015, DOI: 10.11896/j.issn.1002-137X.2015.05.057
Abstract: 提出一种针对灰度虹膜图像进行虹膜特征提取及匹配的方法,其利用四元数二维正交loggabor小波提取虹膜图像的纹理特征,以滤波后图像的解析信号作为虹膜的特征编码。该方法可以同时表征虹膜纹理多方向上的特征,更加全面地描述了虹膜纹理的特征空间。特征匹配采用类似汉明距的方式,同时以虹膜图像中眼睑、睫毛以及光斑的分布为匹配模版来减少它们的干扰。大量实验的结果表明该方法具有非常优越的识别性能。
人是理性的吗?――来自推理与决策心理学中的争论

- , 2017,
Abstract: 当代认知心理学研究发现,人们的推理、判断和决策行为常常偏离形式逻辑、概率和决策理论等规范原理,表现出系统的认知偏差。研究者对认知偏差及其实验研究的不同理解引发了一场持续至今的关于人类理性的争论。悲观论者认为系统认知偏差意味着人们的思维能力存在规范性缺陷,认知偏差研究为人类理性提供了否证性证据。乐观论者从理解问题、规范理论问题和外部效度问题等方面为人类理性进行辩护。两种理性观则把人类理性区分为个人取向与非个人取向两种,试图消解悲观论和乐观论之间的矛盾。
Much psychological research in the last two decades has demonstrated that human responsesdeviate from the performance deemed normative according to various standard models of reasoning,judgmentand decision making( e.g.,the basic axioms of logic,probability and utility theory) and show systematicalcognitive biases. There are different interpretations of the gap between the normative and the descriptivebehaviors,and conflicting viewpoints on whether these cognitive biases indicate systematic irrationalitiesin human cognition. The pessimists believe that the systematical cognitive biases mean normative defects inhuman thinking. The optimists,however,try to defend the assumption that human behavior and cognitionis largely rational by appealing to the arguments of divergent task construal made by the experimenter andparticipants,the wrong norm being applied by the experimenter and the weak external validity of experimentalstudies. The dual rationality theory distinguishes personal rationality and impersonal rationality,and attempts toresolve the contradiction between the views of the pessimists and the optimists
组织形貌对热轧双相钢力学行为影响 Effects of Microstructures on Mechanical Behavior of Dual-Phases Steel  [PDF]
郭佳,,杜宇,刘杰
Material Sciences (MS) , 2013, DOI: 10.12677/ms.2013.34033
Abstract: 采用550小轧机进行了实验室轧制实验,通过改变冷却工艺改变双相钢显微组织中铁素体和马氏体形貌和分布,研究了铁素体和马氏体形貌和分布对钢力学行为的影响。实验结果表明,当组织中的铁素体由多边形铁素体部分转变为针状铁素体时,马氏体的尺寸变小且分布更为均匀。此时,钢的屈服强度和抗拉强度明显提高,延伸率略有下降,冲击性能明显提高。 The ingots were rolled by 550 mills in laboratory and the different shapes and distributions of ferrite and martensite were obtained by changing the cooling process. The influence of the shape and distribution of ferrite and martensite on mechanical properties of dual phase steel was investigated. The results indicated that, the size of martensite is finer, and the distribution of martensite is more homogeneous in steel with the microstructure was mixed by polygonal ferrite, acicular ferrite and martensite than that of steel with the microstructure mixed by polygonal ferrite and martensite. Moreover, the values of yield strength, tensile strength and impact toughness increase apparently, the value of elongation decreases.
A Proof of the Complete Convergence Theorem for Contact Processes on Some Product Graphs
某些乘积图上接触过程的完全收敛定理的证明

YAO Qiang,

数学物理学报(A辑) , 2010,
Abstract: In this article a proof of the complete convergence theorem for the basic contact process on the product graph G1×G2×Z is given, provided that the infection parameter is large enough, where G1and G2 are arbitrary infinite locally finite transitive graphs. It extends the result of Schonmann 1] in some content.
用于成像光谱数据特征矿物识别的人工神经网络结构研究
何勇,国清
国土资源遥感 , 2004, DOI: 10.6046/gtzyyg.2004.03.06
Abstract: 当某一问题很难甚至无法用数学方法建立精确模型时,人工神经网络的方法则显示了优势。对于一个具体问题,采用何种网络结构是至关重要的。本文以美国内华达州Cuprite矿区成像光谱数据特征矿物识别为例,采用6种不同结构的多层前馈网络模型,从其训练难度、运算效率及识别效果等方面进行了综合对比分析。
吸附剂与铅反应的热力学平衡分析
张小锋,
工程热物理学报 , 2006,
Abstract: 本文采用热力学平衡分析的方法,对两种吸附剂CaO和SiO2控制燃煤中铅的排放进行了计算.计算使用软件CHEMKIN.结果表明CaO对铅的化学吸附效果很差,而SiO2对铅的化学吸附效果较好.对煤中含有的硫、氯对吸附剂性能的影响也进行了评价,硫和氯会抑制SiO2对铅的吸附效果,但在1200-1300K对铅的化学吸附效率仍在75%以上.讨论了不同硅铅比对于化学吸附效率的影响,对于实际中选择恰当的硅铅比有指导意义。
再燃脱硝的动力学模拟和组分影响分析
沈伯雄,
环境科学学报 , 2002,
Abstract: 采用Gear算法模拟了再燃脱硝再燃区中化学反应过程,反应的热力学和动力学参数采用GRI30,模拟结果和实验结果作比较,说明该模拟可以用于预测再燃脱硝的基本过程.在模拟的基础上讨论了不同再燃燃料及其中的不同组分如HCN、NH3、H2和CO等对脱硝效果的影响.
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