Results 121 to 130 of about 1,274,438 (219)
Dianci bileiqi, 2019 介绍了双极性窄脉冲（narrow bipolar events,简写NBEs）自动识别的基本方法,通过对双极性窄脉冲的放电特征的统计分析,设计了自动识别的试验方案。对VHF辐射波形和闪电快电场波形中的NBE进行了自动识别方法实验验证。首先对闪电数据进行人工识别,识别出96例NBEs,对其中19例NBEs的11个放电参数进行参量统计和研究分析,根据统计结果选取高频幅度比等9个参数作为NBEs识别判据,对混杂在常规闪电放电中的NBEs进行程序自动识别。成功识别出双极性窄脉冲67例,未识别出10例 ...
王拓, 孙昊, 王彦辉, 张其林
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本、あり〼。vol.4 ：「日本の男女共同参画の現在－世界女性会議（北京会議）から20年」 [PDF]
女性教育情報センター所蔵展示 展示資料の一部を紹介した冊子です。 ●短辺とじ両面 ...
国立女性教育会館女性教育情報センター
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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
野生动物学报, 2012 由于火烈鸟在外观上雌雄极为相似,很难用常规方法对其性别进行鉴定。本试验首次确立了利用PCR技术对火烈鸟性别进行鉴定的分子标记方法。从火烈鸟血液中提取总基因组DNA,针对性染色体上的CHD基因和EE0.6序列,筛选了4对引物进行特异性扩增,其中3对引物组合成2个组（A/B和B/C）进行多重PCR。结果表明,3组引物都在雄性个体中扩增出1条片段,在雌性中扩增出2条片段;待测群体中雄性个体11只,雌性个体6只。经检验,利用3组引物都能准确鉴定火烈鸟性别,为该物种在分子水平上的性别鉴定奠定了基础。
李文斌 +5 more
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血清激光拉曼光谱鉴别肺癌、慢性阻塞性肺疾病患者及健康人的价值
, 2015 目的：探讨血清激光拉曼光谱鉴别肺癌、慢性阻塞性肺疾病（ COPD）患者及健康人的价值。方法收集16例肺癌患者（肺癌组）、13例COPD患者（ COPD组）和17例健康人（健康对照组）的外周静脉血血清，用Labram HR 800激光共聚焦拉曼光谱仪检测，每个血清样品测5个点，将同一样品的5条光谱平均，以此代表该样品的血清拉曼光谱信号，将3组的拉曼光谱信号数据采用单因素方差分析、主成分分析（ PLA）、线性判别分析（ LDA）、交叉检验及受试者工作特征曲线（ ROC）下面积等进行统计学处理 ...
王虹, 张少鸿
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Engendering China‐Africa development cooperation: A Southern feminist perspective
Development Policy Review, Volume 44, Issue 6, November 2026.Abstract Motivation China's leadership has increasingly articulated commitments to gender equality and women's development within international cooperation frameworks, including successive Beijing Action Plans. However, research and policy debates on China‐Africa development cooperation continue to prioritize macroeconomic, financial, and geopolitical ...
Yiping Cai
wiley +1 more source
间皮素、D2-40和Glypican3在卵巢肿瘤中的鉴别诊断意义
Zhongguo shiyan zhenduanxue, 2013 卵巢癌是第三大妇科恶性肿瘤,卵巢透明细胞癌临床较少见,约占卵巢上皮性恶性肿瘤的5%-10%,但在妇科病理鉴别诊断中却占有相当比例。与卵巢透明细胞癌相关的鉴别诊断包括原始生殖细胞肿瘤（特别是卵黄囊瘤和无性细胞瘤）及卵巢浆液性囊腺癌,卵巢癌的分类不同与预后及临床处理大不相同,需要更加客观的指标用来鉴别卵巢癌。本文的目的旨在mesothelin、D2-40、Glypican3在卵巢癌诊断和鉴别诊断中的作用加以探讨。
印永祥, 赵华, 龚华
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Making Policy Evidence Traceable: A Modular Preregistration Framework for Policy Evaluation
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT Preregistration is increasingly used in policy research, but its value depends on whether preregistered commitments can be clearly linked to reported analyses. Policy studies often involve multiple outcomes, evolving administrative data, consequential design and analytic choices, and adaptive implementation, making it difficult to distinguish ...
Yiyun Xia, Tianhao Zhao, Yuhao Ba
wiley +1 more source
Gaoya dianqi, 2018 电力设备中,不同类型的放电因放电功率、能量的差异对设备绝缘的损害能力存在差异,即对绝缘的危害程度不同,确定局部放电类型是放电危险度评估的基础。文中对典型缺陷条件下的局部放电谱图提取了基本参量及统计参量等多种特征指纹;为了降低识别参量的维度,定义了特征向量可分性评估准则,并使用浮动前向搜索算法选取了可分性最优的9组特征参量;分别使用主成分分析、线性可分性分析、核主成分分析及通用可分性分析4种方法将特征向量降为2维,结果表明,使用通用可分性分析降维后特征参量可分性最优。之后,提出了多算法联合的模式识别分类器,
王世强 +4 more
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The Problem With Problem Load: Reconceptualizing Load in the Multiple Streams Framework
Review of Policy Research, Volume 43, Issue 6, November 2026.ABSTRACT What happens when policymaking systems buckle under pressure, disrupting consensus and stalling decision‐making? Drawing on the Multiple Streams Framework, we show that the existing concept capturing this stress, Problem Load, has been both misinterpreted and overstretched.
Dana A. Dolan, Nikolaos Zahariadis
wiley +1 more source