Results 71 to 80 of about 16,442 (238)
, 2002 针对原油蒸馏装置常压塔航煤比重模型具有动态特性的特点, 提出采用双隐层动态递归神经网络(DRNN ) 实现比重的软测 量, 推导了双隐层DRNN 的权值学习算法, 并利用在线比重分析仪构成了航煤比重软测量模型的在线校正。在某炼油厂常压塔装 置实际投用表明, 基于双隐层DRNN ...
曾文华
core
Fast local binary fitting optimization approach for image segmentation [PDF]
, 2013 针对灰度不均匀图像难以正确分割和分割结果依赖于初始轮廓的问题,提出一种快速稳定的分割算法,首先通过自适应距离保持水平集演化(AdPlS)算法进行初始分割以获取较好的初始轮廓,然后采用局部二值拟合(lbf)模型进行快速分割。实验表明,改进后的模型有良好的分割效果,较好地解决了分割速度、精度及稳定性之间的矛盾。It is difficult to get the correct segmentation results for the intensity inhomogeneity images,and ...
张会奇, 李新, 林亚忠, 栾钦波
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Knowledge is not power: Learning in polycentric governance systems
Review of Policy Research, Volume 42, Issue 3, Page 444-465, May 2025.Abstract The link between knowledge and decision‐making in polycentric systems is shaped by the process of collective learning, where policy actors participate in multiple policy forums to acquire, translate, and disseminate knowledge. This article argues that the relationship between learning and participation in polycentric systems differs for actors
Pamela Rittelmeyer +5 more
wiley +1 more source
Intrusion detection method for IoT in heterogeneous environment [PDF]
In order to address the issue of inadequate training efficiency and subpar model performance encountered by Internet of things (IoT) devices when dealing with resource constraints and non-independent and identically distributed (Non-IID) data, a novel ...
LAI Yingxu, LIU Jing, MU Zelin
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Improved FCM algorithm using difference of neighborhood information [PDF]
, 2011 为了克服模糊C均值(fCM)无法处理图像噪声的缺点以及常用改进算法分割不足,提出了一种利用邻域差异性信息的fCM改进算法。利用高斯函数来合理刻画邻域间像素的空间位置和灰度差异特性,实现对中心像素隶属度的调整,达到分割噪声图像的目的。实验证明,该算法可以有效地处理高斯和椒盐噪声,在去除噪声的同时较完整地保留了图像的细节,其分割效果优于几种常用fCM改进算法。In order to overcome the shortcoming of Fuzzy C-means(FCM) that cannot deal
林亚忠, 郝刚, 顾金库
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Zhejiang Daxue xuebao. Lixue ban, 2016 以陕西省83个县域为实证研究单元，基于城乡一体化思想构建了乡村性综合评价指标体系，运用BP神经网络确定其指标权重，在Visual Studio 2010平台上计算乡村性指数，并借助ArcGIS和GeoDA软件划分乡村发展类型，对乡村性数值分异及空间分异进行了定量化测度和分析.运用BP神经网络确定乡村性权重及强度具有一定的可行性；陕西省县域乡村性在数值分异特征上，两极分化严重，中低、中等、中高水平县域组内均衡；在空间分异特征上，呈陕南、陕北高，关中低，东低西高的分布格局，乡村性空间关联性较强，彼此联系紧密.
ZHAOTaotao(赵涛涛) +2 more
doaj +1 more source
Review of Policy Research, Volume 42, Issue 3, Page 530-551, May 2025.Abstract This article aims to examine the emergence of a system of multi‐level governance in Higher Education quality assurance during recent decades in Spain, as a particular case within the European Space of Higher Education. Although there is a well‐established multi‐level structure in the governance of this area at the European level, it is not ...
Ana García‐Juanatey +2 more
wiley +1 more source
Assessment on the Eco-suitability of Human Settlement in the Real Estate Project by Fuzzy Multiple Comprehensive Method [PDF]
, 2008 以现代住区人居生态环境的要求和前人研究为基础,立足于以人为本和便于实际评估工作的开展,综合考虑人居生态环境健康、舒适的特点,在类比众多评价方法和参考国内外指标体系的基础上,运用模糊综合评价对某一大型房地产项目的生态宜居性进行初步分析,以期完善、充实中国房地产项目的生态宜居性评价体系和方法,为该领域的进一步研究提供基础。Based on the requirements and existing research materials for the eco-environment of human ...
吴犇, 王颖, 颜海波
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Global marine environment observation data (ARGO)and ARGOGIS(国际海洋环境资源信息采集(ARGO)及处理系统)
Zhejiang Daxue xuebao. Lixue ban, 2005 21世纪是海洋世纪.海洋环境观测数据对海洋资源利用、海洋环境保护和海洋气候灾害预防十分重要，但国际ARGO组织目前还未有统一的数据分析和处理软件.本文介绍了覆盖全球的海洋环境实时观测和海洋现场测量ARGO数据的格式、记录方法及浮标工作方式，分析了 ARGO数据的特征，空间三维、时空变化等特性，提出了一个实用的基于大型网络数据库Oracle的ARGO数据优化存储模型，着重讨论了海量ARGO数据的高效存储访问，多源多维时空数据处理，并利用当前GIS和遥感领域的前沿技术，采用全组件式模块化方式 ...
XIEJiong(谢炯) +3 more
doaj +1 more source
Conservation Biology, Volume 39, Issue 2, April 2025.Abstract Recognition of the value of multidisciplinary research that bridges natural and social science perspectives has come with calls for conservation scientists to reflect critically on underlying assumptions and power relations involved in the production of knowledge and its application.
Marie‐Annick Moreau, Emily Woodhouse
wiley +1 more source