共查询到20条相似文献，搜索用时 250 毫秒
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黄轩 《Journal of Zhangzhou Technical Institute》2007,9(2):1-3
应急管理中都需考虑应急系统优化选址问题。本文结合绝对中心点模型,同时考虑了应急系统的时间紧迫性和应急系统的运行有效性,确立了一种以遗传算法优化选址的模型,并详细说明了遗传操作方法的设计,实例证明了遗传算法在应急系统优化选址处理过程中的有效性与通用性。 相似文献
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课堂教学优化是提高教学质量的根本保证,近年来,我们采用了系统优化的策略,取得了显著效果。所谓系统优化,就是优化目标要求,改善课堂教学的控制性;优化结构安排,提高其科学性;优化逻辑过程,增强其协调性;优化导学关系,加强其“主体”性;优化教学方法,强化其的艺术性。 相似文献
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豆志磊 《漯河职业技术学院学报》2023,(4):89-92
采用线上教育考试形式开展新生入馆教育已经成为一种趋势。针对我校图书馆原有新生入馆教育考试系统存在的无法兼容移动端使用、网络阻塞卡顿、计算能力不足等问题,结合当前主流技术给出了系统优化方案,并分享了系统优化技术路线图和部分关键核心代码,以期能够为兄弟院校开发同类系统、遇到同类问题提供借鉴和参考。 相似文献
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《实验室研究与探索》2017,(6):93-97
针对标准萤火虫算法(Firefly Algorithm,FA)在求解电力系统优化潮流(OPF)问题上出现的早熟收敛和求解精度不高等问题,引入混沌优化和莱维飞行,形成了混沌莱维萤火虫优化算法(Chaotic Lévy Flightfirely Algorithm,CLFA)。对改进的CLFA算法进行了推导与分析,并将FA和CLFA两种算法对IEEE30节点测试系统进行电力系统优化潮流仿真,用实验证实算法的有效性。仿真结果表明:改进后的CLFA算法避免了早熟收敛,增强了局部搜索能力,提高了求解精度。算法的改进方式具有良好的创新性,学生可以自行开发不同的改进方式,改进后的算法更有利于进行后续的电力系统优化潮流问题研究。 相似文献
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张柏然 《烟台师范学院学报(哲学社会科学版)》2010,(2):94-94
在当今科学大系辩证综合发展的语境下,翻译学也呈现出辩证综合化的势头,各种译论纷纷涌现,形成了差异互补、多元综合的态势,为翻译理论的科学发展提供了丰富的理论源泉。然而,受朴素整体论和机械原子论影响,西方译论与传统译论,语言学、交际学、社会学译论与文艺学、美学、文化学译论之间,依然存在很大的隔阂和不必要的纷争,当代译论迫切需要系统扬弃和升华。贾正传的专著《融合与超越：走向翻译辩证系统论》（上海译文出版社,2008年1月版）,顺应时代的需要,对当代译论的系统优化进行了大胆的尝试,开辟了当代译论系统优化之路,并结出了当代译论系统优化之果。 相似文献
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朱英杰 《中学政治教学参考》2012,(15):28-29
马克思主义哲学既是科学的世界观,又是科学的方法论,它是指导我们认识世界、改造世界的伟大认识工具,掌握系统优化的科学方法便是其中之一。在教学工作中,我学习并坚持了"系统优化"的教学方法,科学运用马克思主义的立场、观点和方法于实际教学中,既符合时代要求,加深对科学理论的理解,又体现新的教育教学理念,效果甚佳。在我看来,系 相似文献
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任宝 《江西电力职业技术学院学报》2022,(12):12-14
变桨机构是风电电场持续稳定的重要部分,在实际工作中,会出现因变桨机构长期使用,变桨空心轴与三角法兰螺栓频繁断裂,造成空心轴和三角法兰无法固定牢固的问题。就贺兰山风电场液压机械变桨系统优化改进进行了研究,通过机组变桨空心轴抱箍法兰盘设计,阐述了空心轴加装抱箍法兰盘技术原理,并解析了其技术要点,测试了液压机械变桨系统优化后的效果,以期为相关领域提供借鉴。 相似文献
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为解决220 kV变电工程设计中重复性设计工作量大、建设标准不统一的问题,提出了变电站电气部分模块化设计的理念.对变电工程设计中实行模块化初步设计进行了研究分析,把变电站电气部分分模块分别设计,再根据各个变电站的具体要求选择模块进行组合.结合实例探讨了其对提高电力工程设计质量及效率的重大意义,为设计企业的发展提供了思路. 相似文献
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Jun-hai SHI Zhi-dan ZHONG Xin-jian ZHU Guang-yi CAO 《浙江大学学报(A卷英文版)》2008,9(3):401-409
This study presents a robust design method for autonomous photovoltaic （PV）-wind hybrid power systems to obtain an optimum system configuration insensitive to design variable variations. This issue has been formulated as a constraint multi-objective optimization problem, which is solved by a multi-objective genetic algorithm, NSGA-II. Monte Carlo Simulation （MCS） method, combined with Latin Hypercube Sampling （LHS）, is applied to evaluate the stochastic system performance. The potential of the proposed method has been demonstrated by a conceptual system design. A comparative study between the proposed robust method and the deterministic method presented in literature has been conducted, The results indicate that the proposed method can find a large mount of Pareto optimal system configurations with better compromising performance than the deterministic method. The trade-off information may be derived by a systematical comparison of these configurations, The proposed robust design method should be useful for hybrid power systems that require both optimality and robustness. 相似文献
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This paper presents an efficient method for globally optimizing and automating component sizing for rotary traveling wave oscillator arrays. The lumped equivalent model of transmission lines loaded by inverter pairs is evaluated and posynomial functions for oscillation frequency, power dissipation, phase noise, etc. are formulated using transmission line theory. The re- sulting design problem can be posed as a geometric programJning problem, which can be efficiently solved with a convex opti- mization solver. The proposed method can compute the global optima more efficiently than the traditional iterative scheme and various design problems can be solved with the same circuit model. The globally optimal trade-off curves between competing objectives are also computed to carry out robust designs and quickly explore the design space. 相似文献
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基于Pareto遗传算法的多目标优化 总被引：3，自引：1，他引：2
张林家 《鞍山师范学院学报》2008,10(4)
在工程实际当中存在着大量的多目标优化问题,传统的多目标优化方法存在着明显的缺陷.本文介绍一种基于Pareto最优概念的遗传算法来求解多目标优化问题.这种方法能够给出多目标优化问题的Pareto解集,而不是单纯的一个解,从而可以帮助决策者在Pareto解集中挑选适合设计要求的解作为最终解. 相似文献
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The optimal panel thickness of an automotive door hasto beidentifiedtosatisfysuchrequirements as highrigidity,natural frequency, and side impact safety, coupled withminimumweight .Therefore ,the use of structural optimiza-tionfor vehicle door design hasin… 相似文献
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Nonlinear decoupling controller design based on least squares support vector regression 总被引：1，自引：0，他引：1
INTRODUCTION Most practical systems are multivariate nonlin- ear systems. In general, the MIMO (multiple inputs and multiple outputs) systems are coupled. This cou- pling affects the effectiveness of a specific loop con- troller on the corresponding output, and in some case, may become serious and cause many difficulties to the control system design. How to decouple the mul- tivariate systems and design practical controllers is one of the major issues in nonlinear control area. In recen… 相似文献
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Giuseppe Carlo Marano 《浙江大学学报(A卷英文版)》2008,9(1):15-25
Based on a multiobjective approach whose objective function （OF） vector collects stochastic reliability performance and structural cost indices, a structural optimization criterion for mechanical systems subject to random vibrations is presented for supporting engineer＇s design. This criterion differs from the most commonly used conventional optimum design criterion for random vibrating structure, which is based on minimizing displacement or acceleration variance of main structure responses, without considering explicitly required performances against failure. The proposed criterion can properly take into account the design-reliability required performances, and it becomes a more efficient support for structural engineering decision making. The multiobjective optimum （MOO） design of a tuned mass damper （TMD） has been developed in a typical seismic design problem, to control structural vibration induced on a multi-storey building structure excited by nonstationary base acceleration random process A numerical example for a three-storey building is developed and a sensitivity analysis is carried out. The results are shown in a useful manner for TMD design decision support. 相似文献
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文章基于线性矩阵不等式（LMI）方法和Lyapunov稳定性理论,研究参数不确6定算子时滞系统的非脆弱保性能控制问题,提出非脆弱状态反馈保性能控制器的存在条件和设计方法,在此基础上,通过建立和求解一个凸优化问题,给出最优保性能控制律的设计。最后用数值算例说明方法的有效性。 相似文献
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Jian LIU Quan-bao WANG Hai-tao ZHAO Ji-an CHEN Ye QIU Deng-ping DUAN 《浙江大学学报(A卷英文版)》2013,14(1):38-46
The optimization design of the power system is essential for stratospheric airships with paradoxical requirements of high reliability and low weight. The methodology of orthogonal experiment is presented to deal with the problem of the optimization design of the airship’s power system. Mathematical models of the solar array, regenerative fuel cell, and power management subsystem (PMS) are presented. The basic theory of the method of orthogonal experiment is discussed, and the selection of factors and levels of the experiment and the choice of the evaluation function are also revealed. The proposed methodology is validated in the optimization design of the power system of the ZhiYuan-2 stratospheric airship. Results show that the optimal configuration is easily obtained through this methodology. Furthermore, the optimal configuration and three sub-optimal configurations are in the Pareto frontier of the design space. Sensitivity analyses for the weight and reliability of the airship’s power system are presented. 相似文献