Results 41 to 50 of about 1,485,481 (151)
World Water Policy, Volume 12, Issue 4, November 2026.ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci +5 more
wiley +1 more source
, 2012 本文简要介绍进气道入口区隔道干扰热流实验数据的相关分析。如采用合适的气动热特征参数和几何特征参数来无量纲化湍流干扰热流数据，不同缩比模型、不同来流条件、不同攻角的干扰热流分布都可相关成一条无量纲热流分布曲线。也就是说，这条湍流干扰热流相关曲线与模型缩比、来流参数、模型攻角无关 ...
唐贵明
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Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT Public consultations are a cornerstone of democratic policymaking, yet the sheer volume and heterogeneity of submissions often overwhelm traditional analysis. Emerging large language models (LLMs) offer new opportunities for making sense of such data, but their performance in contexts with high linguistic and technical diversity remains ...
Edgar Mathevet, Lauriane Cailleux
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT To improve the strength–toughness balance of IN718, and alleviate the brittleness commonly associated with refractory high‐entropy alloys, this study proposes a novel strategy to fabricate defect‐free IN718/WMoTaNb heterogeneous multiprincipal element alloy coatings via laser‐directed energy deposition.
Zhao Wang +7 more
wiley +1 more source
, 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
core
, 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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, 2008 该文基于薄膜撕裂实验测量和反分析来确定铝膜与陶瓷基体之间界面的力学参数(指界面粘结功和分离强度),薄膜是通过一层环氧树脂胶粘结到基体的。薄膜厚度20μm―250μm,撕裂实验中撕裂角度取90°、135°和180°三种。嵌入粘聚力单元(cohesive zone elements)的有限元模型用于模拟撕裂过程,反分析中有限元计算结果作为一个神经网络的训练数据。将撕裂实验结果输入训练后的网络 ...
赵海峰
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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
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 68, Issue 4, Page 540-549, October 2026.ABSTRACT Objective To establish and assess the reproducibility of standardized echocardiographic nomenclature and the protocol for comprehensive evaluation of fetal aortic morphology. Methods This was a prospective cohort study of fetuses with a normal three‐vessel branching pattern of the aortic arch, evaluated from 18–40 weeks' gestation at a single ...
P. Vazirani +11 more
wiley +1 more source
Gaoya dianqi, 2021 通过对高频绝缘心变压器进行磁路特征分析,基于电磁对偶原理和端口网络理论,提出了一种适用于绝缘心变压器的宽频等效电路模型。该模型由磁路等效电感、线圈间等效漏感和电容参数以及理想变压器构成。电感参数表征绝缘心变压器的磁场效应,电容参数表征变压器内部的电场效应。该模型适用于高频、不同匝数、绕组数的绝缘心变压器,对于某些类型的变压器也具有一定的实用意义。提出了基于端口网络理论和基于有限元分析的参数获取方法。采用有限元分析方法获取了宽频模型的所有参数,并结合电路仿真软件进行对比验证 ...
唐坤, 杨军, 叶加权, 聂岚馨
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