Results 1 to 10 of about 3,040 (160)
提出一种基于数字孪生及神经网络的电压扰动定位方法。首先根据配电网中大量的监测点信息以及网架结构参数构建配电网数字镜像模型,然后采用人工神经网络对数字镜像模型的历史数据进行学习训练,得到反映节点电压与暂降发生位置之间映射关系的神经网络模型。该模型可以根据暂降后各节点的电压数据得到反映各节点故障特征的信息,进而实现对暂降源的定位。以河南某县30节点的配电网为例,对所提方法的有效性进行验证,结果表明该方法能够实现对电压暂降源的准确定位。
冯志远 +4 more
doaj +1 more source
探讨了基于差分进化-人工神经网络构建沉积河谷地震响应代理模型的可行性。首先建立沉积河谷对地震波散射的求解方法,以半圆形、V形沉积河谷为例,以入射波条件、沉积内外介质属性、场地形状为特征参数,以沉积河谷地震动放大系数为预测目标参数,构建数据集;其次,建立沉积河谷地震动放大效应人工神经网络、差分进化-人工神经网络算法预测模型,对比两种算法计算精度和稳定性,并进行了特征参数敏感性分析。结果表明:人工神经网络能较好地预测沉积河谷地震动放大效应,使差分进化-人工神经网络预测模型的精度和稳定性显著提高 ...
Sibo Meng, Jiawei Zhao, Zhongxian Liu
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Abstract Are narratives as influential in gaining the attention of policymakers as expert information, including for complex, technical policy domains such as artificial intelligence (AI) policy? This pre‐registered study uses a field experiment to evaluate legislator responsiveness to policy entrepreneur outreach.
Daniel S. Schiff, Kaylyn Jackson Schiff
wiley +1 more source
We apply an integrative perspective to modelling current and future land‐use change in Kuantan, Malaysia, a location with highly biodiverse forests, and also a hotspot of land‐use change. The region is representative of the types of development challenges faced by countries in Southeast Asia, which are also biodiversity hotspots.
Sharun Beream Nasir +5 more
wiley +1 more source
Nailfold capillaroscopy and deep learning in diabetes 甲襞毛细血管镜检测与深度学习在糖尿病中的应用
Highlights Nailfold capillary images were obtained by performing nailfold video capillaroscopy in 120 adult patients with and without diabetes. Over 5000 photographs were analyzed using machine‐learning approaches, and these models were clearly able to distinguish people based on diabetes status.
Reema Shah +6 more
wiley +1 more source
McCulloch-Pitts人工神经元模型80周年纪念:思想、方法与意义
1943年,Warren McCulloch和Walter Pitts发表论文《神经活动内在思想的逻辑演算》,证明可以使用逻辑演算描述神经网络的运行机理,拓展了计算神经科学的领域前沿,奠定了人工神经网络的发展基础。恰逢M-P论文发表80周年之际,结合时代背景和作者学术生涯的变迁,探索M-P理论的思想源泉;借助原文中的示例,概述M-P模型的基本原理;以作者对循环因果和反馈机制的研究为主线,探讨M-P模型对信息科学发展的影响、对控制论发展的贡献,及其在当今人工智能大模型时代的意义。
缪青海, 王雨桐, 吕宜生, 那晓翔, 王飞跃
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可持续发展系统是"黑箱",至少是"灰箱",各因素间是否存在因果关系还不十分清楚,人工神经网络可以较为逼真地模拟该系统.本文以人工神经网络BP模型为工具,借助Matlab语言对区域可持续发展经济子系统指标进行预测研究.通过数据采集、网络结构模型设计、程序设计、网络训练等绘出指标预测图并进行分析,最后提出建议.结果表明,用人工神经网络来模拟可持续发展经济子系统是可行的.
YEZheng-bo(叶正波)
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Climatic Long Term Trend and Prediction of the Wind Energy Resource in the Gwadar Port [PDF]
利用欧洲中期天气预报中心的ERA-Interim海表10m风场资料,计算巴基斯坦瓜达尔港的风能资源近36年(1979—2014年)期间的历史变化趋势,并利用线性回归和BP神经网络两种方法,对该港的风能资源进行长期年度预测,得到以下结果。1)瓜达尔港夏季的风能资源比冬季丰富,且夏季的稳定性明显好于冬季。2)近36年期间,风能密度、有效风速频率和100W/m2以上能级频率分别以?0.78W/(m2·a),?0.21%/a和?0.22%/a的速度逐年显著递减,且该趋势主要体现在夏季,冬季无显著变化趋势 ...
郑崇伟, 陈璇, 高悦
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Abstract The various ways schools of psychotherapy relate to dreams have been marked by isolationism and mutual conflict rather than self‐examination and then integrating the discoveries and methods of other schools. Jung’s method was in opposition to Freud’s psychoanalysis. Existential psychology was dismissive of Freud’s and Jung’s discoveries, while
Ole Vedfelt
wiley +1 more source
Modeling Methods and Influencing Factors for Age Estimation Based on DNA Methylation [PDF]
Age estimation based on tissues or body fluids is an important task in forensic science. The changes of DNA methylation status with age have certain rules, which can be used to estimate the age of the individuals.
Yi-hang HUANG, Wei-bo LIANG, Hui JIAN, Sheng-qiu QU
core +1 more source

