Results 61 to 70 of about 14,115 (167)
Gaoya dianqi, 1987 本文提出了求解多维无约束非线性最优化问题的有效方法——拟共轭梯度法,推导了拟共轭梯度法的计算公式、迭代方法和收敛判据。拟共轭梯度法不仅适用于目标函数有解析表达式的优化问题,而且也适用于难以求取目标函数的梯度和目标函数只有数值解的那些优化问题,因而具有广泛的使用领域。
杨学昌
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Multi-objective optimal design of airfoil based on multi-island genetic algorithm [PDF]
ObjectivesA multi-objective optimization algorithm is proposed to address the problem of the complex operating conditions of large horizontal axis hydraulic turbine blades.
Lin CUI +5 more
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Integrative Conservation, Volume 4, Issue 4, Page 534-545, December 2025.Implementing ecosystem restoration remains challenging for policymakers and practitioners. Focusing on Rwanda, we used a participatory world‐café approach involving scientists, practitioners, and decision‐makers working on ecosystem restoration to identify emerging challenges and future research priority areas. We identified five critical frontiers for
Dula W. Duguma +33 more
wiley +1 more source
Integrative Conservation, Volume 4, Issue 4, Page 665-674, December 2025.Using a diagnostic mitochondrial marker gene, we document the presence of furry‐eared dwarf lemurs, a species known from Madagascar's eastern montane rainforests, in several forest fragments across the island's central highlands. These findings raise new questions about when this species colonized these sites, how they tolerate these changing and ...
Marina B. Blanco +27 more
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全球能源互联网源荷预测是虚拟电厂（virtual power plant，VPP）制定未来调度计划的重要依据。提出一种基于多频组合短期源荷预测的VPP发电侧和用户侧协同优化调度方法。首先对时间序列的负荷数据进行集合经验模态分解（ensemble empirical mode decomposition，EEMD），并将其重构为高低2种频率，使用图卷积神经网络（graph convolution network，GCN）和长短期记忆网络（long short-term memory，LSTM）相结合的GCN ...
吕小红*, 刘维, 刘克恒, 蒋婧
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Applicability and Structure Optimization of Cyclone Separator Based on Numerical Simulation [PDF]
, 2015 旋风分离器是一种利用气-固两相流体的涡旋运动使固体颗粒在离心力的作用下从气流中分离出来的设备，它具有结构简单、操作维护简便、制造安装价格低等优点，被广泛应用于石油、化工、冶金等领域。由于其内部流场具有强旋流湍流特征，气流和颗粒的运动十分复杂，传统的实验方法很难深入研究其内部流场规律和分离机理，随着计算流体动力学的发展，数值仿真分析成为研究旋风分离器的主要手段。 旋风分离器的工况和结构参数会对其性能产生决定性影响。对于一个给定的旋风分离器，其工况参数包括颗粒半径、颗粒密度和入口速度 ...
吕智
core
Optimal Design of Heat Pipe Based on the Multi-object Genetic Algorithm [PDF]
, 2011 Heat pipes have been used widely in many engineering fields due to their higher rate of heat transfer.However,the design of heat pipes often involves selection of multiple parameters and the conventional design algorithms are not efficient in optimizing ...
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Integrative Conservation, Volume 4, Issue 4, Page 527-533, December 2025.The recommendations cover four key aspects namely the definition of the taxa require high priority in the biodiversity conservation management, enhanced flexibility and adaptivity of the implementation processes, enforced integration of research advancement to enable the sustainable usage of plant resources, and finally actions to propose transboundary
Shi‐Cheng Shao +4 more
wiley +1 more source
Gaoya dianqi, 2015 随着清洁可再生的随机性和间歇性风电大规模接入,其对电力系统发电调度的影响不容忽视。考虑风电机组的环境效益和并网对系统安全造成的影响,建立基于多目标机会约束规划模型,将燃煤机组发电成本最小、污染气体排放量最小作为目标,并计及系统的正、负旋转备用容量约束。使用风电出力的分布函数将随机模型转化为确定模型,采用模糊化处理技术将多目标优化转化为单目标优化,利用免疫记忆粒子群优化算法求解模型。最后,以修改后IEEE-30节点系统模型测试算例MATLAB仿真为例,通过算例仿真结果比较分析 ...
胡殿刚 +4 more
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, 2019 采用分布式综合能源系统取代数据中心的传统供能系统,是降低数据中心运行费用的有效措施。考虑A级数据中心的供能可用度,设计了一种分布式综合能源系统,并基于混合整数非线性规划方法,建立了综合经济和环境效益的多目标优化设计和调度模型,选取ε-约束法对相互制约的多目标问题进行处理,在通用代数建模系统(GAMS)中建模并调用LINDOGLOBAL求解器进行优化求解。采用多维偏好分析线性规划决策法从非劣解集中选出最终解,并通过逼近于理想解的排序方法进行验证。算例结果表明 ...
刘成运 +4 more
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