Results 21 to 30 of about 185,782 (148)
Gaoya dianqi, 2021 红外热成像是监测和诊断高压开关设备发热缺陷的方法之一,具有非接触、无损伤等优点。海量红外图像数据的处理对信息挖掘、目标识别和智能诊断提出了更高的要求,而现有方法在故障区域识别、关键特征提取和缺陷分类等方面仍存在不足。因此,文中提出了一种基于红外图像实例分割的敞开式开关设备发热缺陷智能诊断方法,利用Mask R-CNN进行感兴趣区域的自动提取与分割,构建轻量级卷积神经网络并引入到Mask R-CNN的最后一步,利用迁移学习进行模型训练,实现发热缺陷的自动识别。测试结果表明 ...
叶剑涛 +5 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Solar‐blind ultraviolet (UV) photodetectors (SBPDs) play a critical role in applications including UV communication and fire warning systems. Gallium oxide (Ga2O3) has emerged as a promising material due to its wide bandgap and low cost, but suffers from high dark current and slow response speed caused by oxygen vacancy (VO) defects. This work
Yuhao Lin +14 more
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Engineering Geometric Active Sites in Cobalt Spinel Oxides for Energy and Environmental Catalysis
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Cobalt‐based spinel oxides (Co3O4 and derivatives) are among the most promising transition metal oxides for electrochemical energy conversion and environmental catalysis due to their abundant active sites, structural tunability, and robust redox flexibility.
Shenning Liu +6 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Mechanoluminescent materials have gained significant attention for their unique capability to convert mechanical stimuli into light without external optical or electrical excitation, holding immense promise for applications in safety monitoring, biomedicine, optical anti‐counterfeiting, and intelligent sensing.
Fanlei Qin +8 more
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Risk, Hazards &Crisis in Public Policy, Volume 16, Issue 4, December 2025.ABSTRACT Research examining the complexities and operational structures of civil–military coordination within large‐scale disaster response frameworks in Canada remains scant. This study addresses this gap by critically evaluating existing civil–military coordination mechanisms, identifying systemic deficiencies, and proposing evidence‐based strategic ...
C. Emdad Haque +2 more
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World Food Policy, Volume 11, Issue 2, November 2025.ABSTRACT A key strategy for achieving food security in Ghana is the implementation of food security projects. Unfortunately, one‐third of these projects encounter failure, primarily due to institutional shortcomings. The study demonstrates that institutional weaknesses are significant barriers to attaining food security and examines how institutional ...
Collins Oduro +2 more
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, 2016 为识别铟锡氧化物导电薄膜透明区域内可能存在的加工型和移交型缺陷,并满足实际应用需求,提出了基于高分辨率视觉系统的自动缺陷识别方法.根据铟锡氧化物薄膜光学特性和空间要求,设计了工作距离为30 mm的科勒式同轴光照明模块.此外,为了与照明部分通用光学元件,设计了适用于应用检测的高分辨率成像模块.完成图像采集后,为便于分别检测两类缺陷,采用了两种预处理方法:对图像进行邻域半径r=7的中值滤波并与原图像相减后,获取清晰的划痕缺陷;对图像进行形态学和与阈值处理后,获取对比度为48％的透明电路图案 ...
陈方涵 +3 more
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Gaoya dianqi, 2017 振荡波电压法因其无损检测特性被广泛应用于局部放电检测中,而目前缺乏对振荡波电压下电缆故障类型的模式识别研究。为此,笔者根据常见的电缆缺陷类型,制作了4种10 kV交联聚乙烯电缆中间接头人工缺陷模型,对4种缺陷模型施加振荡波电压并测量局部放电信号;提出以局部放电信号正负半波统计算子作为模式识别的输入特征量,采用支持向量机分类器对4种典型电缆缺陷进行模式识别;并将识别结果与采用人工神经网络的模式识别结果进行对比,验证了该方法的有效性。结果表明 ...
陆国俊 +4 more
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Integrative Conservation, Volume 4, Issue 3, Page 272-276, September 2025.This photo displays one of our camera locations within the core area of Mt. Siguniang National Nature Reserve, China. The site features steep scree slopes and > 1000 meters elevational gradient with minimal anthropogenic disturbance. Camera traps captured three unique snow leopard individuals (Mr.
Dongrui Wang +6 more
wiley +1 more source
Gaoya dianqi, 2019 针对传统PD模式识别用统计特征量需要依赖专家经验而缺乏一定的泛化性问题和卷积神经网络（CNN）模式识别算法缺乏PD图谱时序特征信息的问题,文中构建了基于CNN-LSTM深度学习的PD PRPD图谱模式识别模型,该模型综合了CNN善于挖掘PRPD图谱局部空间信息的优点和长短时记忆网络（LSTM）善于挖掘PD图谱时序特征信息的优点,可同时提取PRPD图谱的局部空间特征和时序特征,利用变压器典型绝缘缺陷放电图谱对构建的网络进行性能测试,并与CNN和LSTM对比,结果表明,对于PD图谱稳定的悬浮电位缺陷,CNN-
周秀 +8 more
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