Results 31 to 40 of about 11,003 (181)
A hybridized method for remote sensing digital images matching(一种遥感数字图像匹配的合成算法)
Zhejiang Daxue xuebao. Lixue ban, 2005 分析了传统的基于灰度和基于特征的匹配算法，提出了一种基于边缘特征和相关系数的新匹配算法.该算法首先对潜在匹配图像和模板图像利用高斯拉普拉斯(LOG)算子和梯度算子提取影像的边缘，然后提取二值化图像，最后再利用相关系数法对二值化后的边缘影像进行匹配运算，得到正确的匹配结果.该算法融合了传统算法的优点.利用该算法对上海的SPOT5 m分辨率不同波段的卫星影像进行了匹配试验，获取了比较好的匹配效果.
ZHANGDeng-rong(张登荣) +2 more
doaj +1 more source
The Role of Uncertainty in the Policy Process: An Extension to the Multiple Streams Framework
Review of Policy Research, Volume 43, Issue 1, January 2026.ABSTRACT A core assumption of the Multiple Streams Framework proposes that agenda and policy change is more probable when a policy proposal worked out as a viable alternative in the policy stream is coupled with the political and/or problem stream in an open policy window.
Sebastian Hemesath, Georg Wenzelburger
wiley +1 more source
, 2018 目的:调查留学生对高校满意度,以此提出改善高校留学生管理服务工作的可行性建议。方法:采用自编问卷的形式对厦门某高校108名留学生进行问卷调查,采用SPSS 22.0软件进行统计结果分析。结果:影响留学生满意度的因素包括管理者是否听取反馈、工作人员态度友善、教学设施齐全、宿舍管理人性化、是否提供心理咨询、留学生自身中文水平等五个维度、十二个因素。结论:应规范健全留学生管理制度;加强服务管理团队建设;构建就业服务体系;加强宿舍规范管理,促进宿舍文化交流;增加宿舍硬件设施及软性服务 ...
施晨
core
Construction of Quality Index System and Screening of Characteristic Index of Rice for Different Uses [PDF]
Taking rice as the object of study, this study systematized quality evaluation indicators, assessment methods, and their foundations, constructing a rice quality indicator system tailored to different uses.
Baiyi LU +5 more
core +1 more source
Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Application of Complex Three-Order Cumulants to Fault Diagnosis of Hydraulic Valve [PDF]
, 2013 为了提高故障诊断正确率,提出了一种基于复数三阶累积量的机械故障诊断方法.三阶累积量的不同定义的复数形式包含了信号间不同的耦合信息,利用这些信息进行了故障诊断.在溢流阀故障诊断实验中,利用这些不同的耦合信息,通过二维小波在不同的方向上对故障信号和正常信号进行特征提取,然后将这些特征值输入支持向量机进行故障判别.实验结果表明,上述方法可以提高故障诊断正确率.同时还对实数三阶累积量也进行了相同的实验,这些实验所取得的诊断效果证明了采用本文方法的有效性.In order to improve the ...
吴文兵, 周桃庚, 杨淑群
core
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
Gaoya dianqi, 2015 高压断路器分合闸线圈电流信号特征提取在故障识别、检测及诊断方面都有重要的意义。文中提出采用小波分析与时域求极值点相结合的方法来获取高压断路器分合闸线圈电流信号特征值,并根据该特征值对断路器的故障判别方法做了探索性研究。实验结果表明,电流信号特征值提取方法是有效的,故障识别方法正确。
孙银山 +4 more
doaj
农民增收:地权稳定抑或土地流转?——基于对漳浦县农地细碎化和农业投入的产出弹性分析 [PDF]
, 2012 本文根据对漳浦县的调研计量分析了农地细碎化对农业产出的影响。研究发现,不同于传统认识,一定程度的农地细碎化对南方沿海地区农民收入反而有正向影响。其原因在于我国现有的加工贸易型工业化、滚动型城市化使农民的非农化采取了特殊的形式。现有的工业化、城市化模式并没有形成农业土地规模经营的必要前提,因此,要推进农村土地流转,农地规模经营,必须从调整现有的工业化、城市化模式入手。目前情况下,加强农村地权稳定性,尊重农民在农村土地流转中的自主权,对于维护农民基本利益具有重要作用,与此同时 ...
卢盛荣, 易明子, 李文溥
core
Construction of Quality Evaluation Systems for Coffee Beans and Their Application to Chinese Coffee Beans [PDF]
In order to explore quality evaluation methods for Chinese coffee beans for freshly ground coffee and instant coffee and to select evaluation indicators, the major quality indicators were selected from the basic quality indicators through the Delphi ...
ZHAO Xi, MIAO Yue, JI Shengyang, YAN Lin, LI Ye, ZHANG Fang, GONG Jiashun, LU Baiyi
core +1 more source