Results 31 to 40 of about 545 (83)
Rare Metals, Volume 44, Issue 1, Page 404-416, January 2025.Graphical abstractTOC (Table of Content) AbstractTwo‐dimensional (2D) metal oxides (2DMOs), such as MoO2, have made impressive strides in recent years, and their applicability in a number of fields such as electronic devices, optoelectronic devices and lasers has been demonstrated. However, 2DMOs present challenges in their synthesis using conventional
Li‐Ying Deng +15 more
wiley +1 more source
Gaoya dianqi, 2014 GIS设备的信息分析与应用是GIS智能化的关键。笔者在具体分析智能GIS设备信息流的基础上,根据电力自动化系统最流行的IEC 61850协议规范,进行了GIS设备的IEC 61850建模,为GIS设备的信息通信和智能化应用奠定基础。
李刚, 朱革兰, 王智东, 胡杰文
doaj
Exploring critical factors in referral systems at different health‐care levels
World Medical &Health Policy, Volume 16, Issue 4, Page 729-744, December 2024.Abstract Background A consistent referral system and patient patronage are the primary connections between the three tiers in the healthcare delivery system. Patients were scheduled to visit primary care clinics for the first time. Subsequently, patients are moved to more distinguished healthcare facilities to receive additional care.
Farrukh Jamal +5 more
wiley +1 more source
Gaoya dianqi, 2017 针对GIS在电站设计及设备招标设计中,由于涉及GIS室空间尺寸设计、土建结构设计、及GIS设备中与试验相关的配套设备,为保证高压配电装置现场试验顺利完成的问题,依据相关试验规范提供的方法,开展对GIS现场耐压相关设计问题的研究工作,提出了地下GIS及不同引出线、地面GIS,在电站设计及设备招标设计时需重点考虑的问题,提出解决思路,供同行参考。
穆焜, 秦莹, 李勇
doaj
Eyes on nature: Embedded vision cameras for terrestrial biodiversity monitoring
Methods in Ecology and Evolution, Volume 15, Issue 12, Page 2262-2275, December 2024.Abstract We need comprehensive information to manage and protect biodiversity in the face of global environmental challenges, and artificial intelligence is required to generate that information from vast amounts of biodiversity data. Currently, vision‐based monitoring methods are heterogenous; they poorly cover spatial and temporal dimensions, overly ...
Kevin F. A. Darras +11 more
wiley +1 more source
Stochastic unit commitment for power systems with offshore wind farms towards frequency resiliency
IET Renewable Power Generation, Volume 18, Issue 7, Page 1218-1229, 18 May 2024.Capture the uncertain impacts on power systems within offshore wind farms using a scenario tree, with uncertain offshore wind output, inertia, line failure, and system state. Formulate the proactive unit commitment problem as a two‐stage stochastic programming problem with nonlinear recourse.
Jun Guo +3 more
wiley +1 more source
Gaoya dianqi, 2016 文中提出了基于多参量的GIS设备气体绝缘状态评估方法。该方法首先对影响GIS设备绝缘状况的因素进行了详细的分析,确定影响该气体绝缘状态的主要因素。然后利用气体组成成分、温度、湿度、压力、纯度作为因素集,对其进行绝缘评估。最后,采用一对一的分类方法建立基于相关向量机的GIS设备气体绝缘状态评估模型,并将GIS设备气体的绝缘状态分为"正常"、"注意"、"异常"和"故障"4类,利用训练样本对评估模型进行训练,进而实现GIS设备气体绝缘状态的评估。实例分析表明,相对传统方法 ...
宋人杰 +4 more
doaj
Gaoya dianqi, 2020 由于GIS设备绝缘故障中内部异物引发的占比最大,且当检测发现长筒体结构GIS设备内部异物时,传统的吸尘器清理及人工擦拭的方式难以有效发挥作用。为了更加有效的清理GIS管道内的异物,文中在研发的GIS设备内部智能检查清理机器人平台基础上,设计了基于紫外光源/可见光源结合的机器人双光源补光技术,研究了基于双光源补光的机器人图像处理的异物识别算法,为GIS设备异物缺陷检查分析验证及异物清理提供了全新的方案。在两种光源下分别对管道内部拍摄图像,进而对图像进行处理,做异物识别判断,为机器人清理异物提供指导 ...
马飞越 +6 more
doaj
Gaoya dianqi, 2019 变电站地基下沉容易导致GIS内部导体结构发生变化,GIS设备导体的倾斜会引发设备故障。为了检测GIS设备导体的倾斜状态,针对某220 kV变电站出现的地基下沉问题,文中首先采用局部放电方法检测GIS设备内部结构是否存在故障问题,然后采用X射线数字成像技术对GIS设备导体进行X射线检测,利用GIS典型缺陷图像自动识别技术对得到的影像进行分类识别,从而确定了不同区域导体的倾斜状态,同时检测结果可以为变电站下一步的地基处理提供准确的理论依据。
刘荣海 +4 more
doaj
Gaoya dianqi, 2015 随着GIS应用的日益广泛,其安全运行对整个电力系统的意义愈加重要,因而需要加强对其故障检测的研究。笔者通过对一起110 k V GIS设备的故障检测实例分析,综合运用各种故障检测方法,快速、准确地检测出了故障点,证明了提出的GIS设备的故障判断步骤的正确性,对提高GIS设备的检修效率和设备利用率具有重要意义。
李超, 陶蓉
doaj