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Search Results: 1 - 10 of 19552 matches for " 顾帅? "
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无失真并行数据压缩的脉动阵列ASIC设计
,典勋,
电子学报 , 2000,
Abstract: 本文提出适用于无失真并行数据压缩的超大规模ASIC的逻辑电路设计.与其他传统的串行或小规模并行无失真数据压缩的硬件或软件方法相比,本文的Systolic阵列结构有更好的并行性、实时性和普适性.对ASIC的时序和功能进行的模拟验证,证明了逻辑和电路设计的正确性和有效性.
高阶细胞自动机新的数据压缩方法
,典勋
华东理工大学学报 , 2000,
Abstract: 构造出高阶置换映射,进而得出更有效的高阶细胞自动机超并行数据压缩方法,与细胞行动机超并行数据压缩方法相比,其处理速度可以成倍地提高。证明了用遗传进化算法得到的高阶细胞自动机元胞级无失真数据压缩规则的正确性和可行性。并推广到任意阶,给出了对应的置换映射,之后讨论了有关的时间复杂性及高阶数据压缩方法的有效性。
数字化矿山资源储量计算方法
王正,和和
煤田地质与勘探 , 2010,
Abstract: 矿产资源储量管理是数字化矿山的有机组成部分,储量计算是储量管理工作的重要内容。以似三棱柱为基本体元,根据控制点信息成功构建了矿体空间模型,并在此基础上提出了基于似三棱柱的储量算法和回归储量算法。结果表明,这两种方法可以准确地计算出矿体空间的资源量,并能够根据不断增加的控制点信息实现储量的动态更新,应用实例也验证了算法的可行性和有效性。
Ni25+离子1s2nd (n≤9)的激发能和精细结构
Excitation Energies and Fine Structure Splittings for 1s2nd (n≤9) States of Ni25+ Ion
 [PDF]

徐宁, 韩雪飞, 莹莹,, 胡木宏
Modern Physics (MP) , 2013, DOI: 10.12677/MP.2013.32012
Abstract: 本文主要计算1s2nd (n≤9)态的激发能和精细结构劈裂。非相对论能量通过求解Hamiltonian算符本征值的极值获得,然后将相对论效应和质量极化效应的贡献作为一级微扰来处理。精细结构劈裂数值由自旋–轨道相互作用算符和自旋–其他轨道相互作用算符的期待值得到。为了获得高精度的计算结果,在类氢近似下估算高阶相对论修正和量子电动力学(QED)修正对能级结构的贡献。本文得到的精细结构的计算结果与实验相差只有几个cm?1,激发能的计算结果与实验相比,相对误差只有0.2‰~0.6‰,由此表明本文获得的理论数据精度较高,采用的理论方法是合理可靠的。
The excitation energies and fine structure splittings of 1s2nd (n≤9) states for Ni25+ ion are calculated in this paper. Non-relativistic energies are obtained with the eigenvalue of non-relativistic Hamiltonian operators; the relativis-tic and mass-polarization effects on the energies are included as the first-order perturbation. The fine structure splittings are determined from the expectation value of spin-orbit and spin-other orbit interaction operators. In order to make the results more precise, quantum-electrodynamics (QED) contribution and higher-order relativistic contribution are con-sidered for highly charged Ni25+ ion. The results of fine structure splittings agree with the experimental data excellently, and the error is no more than several cm?1. Compared the excitation energy calculated with experimental data, the rela-tive error is only 0.2‰ - 0.6‰. It indicates the results obtained in this paper are both reliable and accurate.
基于孤立波的多Agent系统超分布超并行自组织动态任务规?…
慧平,黄勋
华东理工大学学报 , 2000,
Abstract: 提出一种孤立波的模型和方法,在一群理性的独立自治的Agent间建立超分布超并行的自组织动态任务分配机制,克服现有的多Agent联盟方式存在的诸多不足,通过关于分布式运输调度系统的仿真实验验证了本分配机制的有效性、动态性、开放性和自适应性。
The Faster Higher-Order Cellular Automaton for Hyper-Parallel Undistorted Data Compression
GU Jing,SHUAI Dianxun,
,典勋

计算机科学技术学报 , 2000,
Abstract: This paper defines second-order and third-order permutation global functions and presents the corresponding higher-order cellular automaton approach to the hyper-parallel undistorted data compression. The genetic algorithm is successfully devoted to finding out all the correct local compression rules for the higher-order cellular automaton. The correctness of the higher-order compression rules, the time complexity, and the systolic hardware implementation issue are discussed. In comparison with the first-order automaton method reported, the proposed higher-order approach has much faster compression speed with almost the same degree of cellular structure complexity for hardware implementation. Supported by the National Natural Science Foundation of China under Grant No.69773037, Foundational R&D Plan of China under Grant No.G1999D32707, and the State Key Laboratory Foundation of Intelligence Technology and System, Tsinghua University. GU Jing received her B.S. degree in 1998 from East China University of Science and Technology. She is currently an M.S. candidate in computer science and technology. Her research interests are distributed artificial intelligence, artificial life and embryo. SHUAI Dianxun was born in 1941. He graduated from Center China University of Science and Technology in 1962 and received his Ph.D. degree in computer science and technology from Tsinghua University in 1986. He presently is a Professor and Ph.D. tutor in the Department of Computer Science and Engineering, East China University of Science and Technology. As a senior visiting scholar, he did research work in Tohoku University, Japan during 1980–1982, in Minnesota University and CDIC, USA in 1986–1987, and in Doshisha University and Kyoto Sangyo University, Japan in 1993–1997. His research interests are artificial intelligence, distributed parallel processing, computer architecture, genetic algorithm and multi-agent systems.
超级电容器老化特征与寿命测试研究展望
, 韦莉, 张逸成, 姚勇涛
中国电机工程学报 , 2013,
Abstract: 超级电容器在大规模储能领域有广泛的应用前景。因其单体电压较低,在大规模储能中需要大量串并联组合工作,若其中某节单体失效,将迅速导致模块甚至全储能系统无法正常工作,因此超级电容器的寿命老化研究具有极其重要的意义。综述了超级电容器的老化特征,阐释了影响其寿命衰减的因素,比较了超级电容器寿命测试的特点和适用范围,试验验证了老化因素中工作温度因素对超级电容器特征参数的作用,并基于超级电容器现有寿命老化研究的不足进一步探究原因,通过对老化特征与寿命测试的研究现状分析,展望了超级电容器寿命老化研究的未来发展趋势。
超级电容器不一致性研究现状及展望
, 韦莉, 张逸成, 姚勇涛
中国电机工程学报 , 2015, DOI: 10.13334/j.0258-8013.pcsee.2015.11.026
Abstract: 理想超级电容器模块原本应遵循其单体性能,但由于超级电容器不一致性的客观存在,使模块特性受限于最差单体,并将引起全储能系统加速老化,严重妨碍大规模储能领域的开发和应用,因此超级电容器的不一致性研究对大规模储能系统的安全可信、高效可用非常关键。该文阐述了现有超级电容器单体特性差异的成因及不一致性与老化的内在联系,分析了特征参数对储能模块使用的影响,给出了可用于评价超级电容器单体离散程度的参数,试验验证了标准充电与自放电工况下的单体特性差异,反映了离散程度随正常使用而不断劣化,根据不一致性研究现状展望了未来超级电容器值得深入探索的方向。
CFRP-钢管混凝土轴压短柱的强度计算
,赵颖华,孙国
工业建筑 , 2007, DOI: 10.13204/j.gyjz200704012
Abstract: 将CFRP(碳纤维复合增强塑料)应用于钢管混凝土结构,对CFRP-钢管混凝土轴压短柱的受力性能进行了简要的理论分析;应用塑性全量理论的Hencky应力应变关系来确定钢管进入塑性后CFRP-钢管混凝土构件的极限承载力,推导出碳纤维拉断时构件极限承载力的解析计算式;并将解析分析结果与试验数据比较。
因子混合模型:潜在类别分析与因子分析的整合
陈宇,温忠麟,红磊
心理科学进展 , 2015,
Abstract: ?因子混合模型(fmm)是考虑了群体潜在异质性后的因子分析模型,它将潜在类别分析(lca)与传统的因子分析(fa)整合在同一框架内,既保留了两种分析技术的优点,同时又展现出独特优势。fmm的应用主要包括描述变量的潜在结构、对被试进行分组以及探测社会称许偏差等。我们建议分别采用fa、lca与fmm三种模型拟合数据,参考拟合指数和模型可解释性选择最优模型。总结了fmm的分析步骤以及软件使用,并用于探讨大学生社会面子意识的测量模型。未来研究应关注fmm分析过程的简化,继续深化对拟合指数等方面的探讨。
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