Results 31 to 40 of about 1,423,689 (155)
Jianzhu Gangjiegou Jinzhan, 2013 研究分析了欧洲第三代核电站（EPR,European Pressurized-water Reactor）核岛安全壳钢衬里的模块化吊装。首先研究了环形桁架在进行钢衬里吊装时最不利竖向荷载下的受力性能;其次对钢衬里吊装环形桁架进行了参数优化分析,研究环形桁架的不同参数变化对桁架性能的影响,确定出环形桁架的优化参数取值;最后对某核岛安全壳钢衬里穹顶吊装时的各项受力性能进行了研究,包括吊装受力分析、风荷载作用分析及吊耳节点有限元分析,并提出了一些参数的取值及吊装方案的合理建议,为工程施工设计提供了参考。
叶垚 +4 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Lung cancer remains a major cause of cancer‐related mortality worldwide, and non‐small cell lung cancer (NSCLC) accounts for the largest proportion of diagnosed lung cancer cases. Exosomal programmed death‐ligand 1 (PD‐L1) has attracted increasing attention as a potential liquid‐biopsy biomarker associated with tumor immune regulation; however,
Chen Su +6 more
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Zhejiang Daxue xuebao. Lixue ban, 2022 详细分析了电场作用下四维Hindmarsh-Rose（HR）神经元模型的分岔模式及放电行为。通过数值仿真得到该神经元模型的多组双参数分岔图、最大Lyapunov指数图、峰峰间期分岔图等，发现该模型在双参数平面上存在倍周期分岔、加周期分岔等模式及“锯齿状”混沌结构。通过构建合适的目标函数，提出了自适应混合粒子群遗传算法，将神经元模型的参数辨识转化为最优化问题。数值仿真结果表明，算法对神经元模型的参数辨识效果较好，能更准确地辨识未知参数，具有一定优越性。
XIAORan(肖冉) +3 more
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Insights for conservation from the Ecological Knowledge Games project
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract Environmental conservation research requires robust methods for collecting large‐scale behavioral data and engaging diverse stakeholders in decision‐making processes. We (Y.P., A.B.D., and N.B.) created EcoKnowGames (Ecological Knowledge Games), a transdisciplinary project that develops knowledge games for conservation science and data ...
Yuan Pan +4 more
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, 2007 从“数据整理和概念分组”、“列表或直方图”、“比较矩阵”、“有结构数据聚类”、“无结构数据聚类”、“文档聚类地图”、“引文分析”以及“SAO”8个方面介绍当前国外主要的专利分析工具的功能及特色,并进行比较研究 ...
刘佳佳, 董旻, 方曙
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Gaoya dianqi, 2017 电网的发展对高压开关产品的可靠性提出更高的要求。SF6气体泄漏是导致高压开关缺陷和故障最重要的因素之一,以某省110 kV断路器SF6气体泄漏运行数据为基础,研究了高压开关产品的可靠性数据分析方法。对运行数据的统计分析结果表明,SF6气体泄漏数据能够用威布尔分布模型进行分析描述。进一步对威布尔分布的参数进行了参数估计,并将参数估计结果与统计直方图进行对比,证明了参数估计结果的有效性。基于此,最后对高压开关产品SF6气体泄漏的寿命情况进行了分析,并给出了针对高压开关产品密封结构的基本运维策略。
刘宇 +6 more
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Integrative Conservation, Volume 5, Issue 3, Page 255-267, September 2026.This study presents a comprehensive review of the 500‐year spatiotemporal evolution of global botanical gardens, identifying three major development stages—initial exploration (1543–1699), steady expansion (1700–1899), and rapid proliferation (1900–2020)—with six distinct sub‐stages. We propose a tripartite driving framework grounded in colonial botany
Shidong Li, Guangzhen Shi, Qingwei Li
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, 1999 本文首先在总体分析国内外机器人误差分析方法的基础上，指明前人对机器人误差的分析多数着重于对关节变量的分析，而很少涉及关节参数误差对机器人轨迹误差的影响；然后从两自由度机器人入手，详细分析了机器人关节参数如杆长、起始角等对机器人轨迹误差的影响程度，并通过求解关节参数建立机器人的精确模型；最后分析了六自由度机器人关节参数对轨迹误差的影响程度，并用单纯形法对机器人的关节参数进行求解，建立机器人的精确模型并获得机器人的正确轨迹。本文提出用单纯形法优化求解机器人关节参数，经过仿真验证 ...
林强强
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Identical Platform, Divergent Publics: Sweden and Finland During the 2022 NATO Crisis
Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Digital platforms are often theorized as universal drivers of political polarization, yet empirical patterns remain inconsistent across countries. Leveraging the natural‐experiment logic of Sweden's and Finland's simultaneous 2022 NATO applications and the NATO–Turkey diplomatic crisis, this study examines how national political cultures ...
Selcen Ozturkcan
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SENSITIVITY ANALYSIS OF SIMILARITY CRITERION NUMBER AND ITS APPLICATIONS
, 2011 利用复杂流动相似准数敏感性分析的方法,从理论公式及数值分析出发,分别将该方法应用于Wigley船模阻力分析、剪切流中对称Joukowsky翼型的升力和力矩系数分析,以及脉冲管制冷机内部交变流动与换热的分析中.仔细比较了Re, Fr, Sr, Ma等无量纲参数对不同目标函数的敏感性,定量地得到了上述无量纲参数的敏感区间,并将数值结果与实验结果进行了比较 ...
李家春, 徐?xuben2005@126.com, 徐犇
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