Results 21 to 30 of about 23,977 (162)
Adivasi (Tea Tribe) worldviews of living close to wild Asian elephants in Assam, India
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract In Assam state, northeastern India, human–elephant conflict mitigation has included technocentric measures, such as installation of barriers, alternative livelihoods, and afforestation. Such measures treat conflict as a technical problem with linear cause–effect relations and are usually ineffective over the long term because they do not ...
Sayan Banerjee +2 more
wiley +1 more source
Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure [PDF]
, 2005 Article describes the process of fault diagnosis and fault-tolerant control for nonlinear systems with linear output ...
Shen, L., Wang, H., Yue, H.
core +1 more source
Gaoya dianqi, 2013 故障选相是高压输电线路继电保护正确运行的重要环节,也是精确测距的重要前提。传统的故障选相方法仅适用于简单故障,灵敏度较低,容易受系统运行方式、故障接地电阻等的影响。笔者在输电线路各相电流故障分量分析的基础上,借鉴信号能量的概念,给出了故障分量能量的定义,提出一种利用故障分量能量系数实现故障选相的新方法。该方法直接利用故障电流,提取故障分量并计算故障分量前2个周期的信号能量,得到故障状态下各相电流故障分量能量占电流故障分量总能量的比例系数,构造故障相识别特征向量,建立故障选相概率神经网络进行选相 ...
吴浩, 郭辉, 蔡亮
doaj
Gaoya dianqi, 2020 变压器故障诊断特征信息繁多,且故障点难以确定,为有效利用故障信息提高故障诊断准确率,以及实现故障定位,提出一种基于粗糙集知识和优化支持向量机的变压器分层故障诊断及定位新方法。首先使用邻域粗糙集评估DGA样本重要度,并约简出优选故障诊断特征量。其次构建基于多分类支持向量机的分层故障诊断模型,采用粒子群算法优化模型参数以提高分类精度,实现了故障性质和故障定位的多层诊断。实例分析表明,新特征量可以提高机器学习的知识挖掘能力,不仅故障分类的精度增加,而且模型可以实现故障点的定位,综合诊断准确率达到88.4%。
周光宇, 马松龄
doaj
SVIT‐SSR: A sEMG‐based vision transformer approach for silent speech recognition
Electronics Letters, Volume 60, Issue 21, November 2024.The silent speech recognition (SSR) task based on surface electromyography is abstracted into a short‐term image sequence classification task and the SVIT‐SSR model based on the vision transformer (VIT) framework for silent speech recognition is proposed.
Zhao Li +5 more
wiley +1 more source
Integrative Conservation, Volume 3, Issue 2, Page 87-103, June 2024.Some extinctions can be prevented if impediments to protection of threatened species are overcome. Policies and practices have failed endangered species and biodiversity conservation is fraught with impediments such as rhetorical adoption, policy dismantling, circumvention of legislative obligations, and deliberate ignorance of scientific evidence ...
Noel Preece +2 more
wiley +1 more source
Probability Safety Analysis of Simplified CPR1000 Main Feedwater System and AP1000 Passive Containment Cooling System [PDF]
, 2016 随着数字化仪控系统在核电厂中得到越来越多的应用，其可靠性对核电安全也越来越重要。传统概率安全分析方法已在模拟仪控系统中得到广泛应用，但在分析具有新设备和新技术的数字化仪控系统时还存在不足。动态概率安全分析方法中，Markov/CCMT是较为符合数字化仪控特性的概率安全分析方法之一。 本文主要是应用故障树、Markov和Markov/CCMT三种方法对简化CPR1000主给水系统和简化AP1000非能动安全壳冷却系统分别进行安全分析，其中简化CPR1000主给水系统在设置故障时偏重于数字类故障 ...
侯恩通
core
Dianci bileiqi, 2018 目前,污闪故障已成为影响输电线路安全稳定运行的主要故障之一。为了提高电网防污闪工作水平,本文结合某网省公司历史污闪故障,分析绝缘子污闪影响因子,融合行波测距、在线监测、历史故障库等多源信息,提炼污闪故障影响因素,构建绝缘子污闪故障诊断模型及方法,分析污闪故障模式影响概率,指导污闪事故判定。最后,结合构建的污闪故障诊断模型层级,将实际发生故障案例代入模型分析,计算污闪故障概率,初步判定故障类型,与后续现场排查对比显示故障诊断结果吻合,为电网故障分析工作提供高效辅助。
吴念, 王钊, 林卿, 周赞东
doaj
Research on Real-time Abnormal Detection of Network Traffic under The Big Data Environment [PDF]
, 2015 随着互联网的快速发展，数据网规模不断扩大，基于数据网的各种应用业务也越来越广泛，对各大运营商以及业务数据量大的企业，在运维管理方面不得不投入了大量的人力与物力。在运维管理中，故障实时预警是最重要的一部分，快速并准确地预警故障，可以以最快的速度发现业务环境中的问题，从而及时地避免故障带来的严重损失。在大数据环境下，研究实时故障预警技术的理论和实现机制，在现实运维管理中有很大的实际意义。 其中流量实时预警是最重要的一个环节，通过流量的实时预警，可以很大程度反馈业务的故障。因此 ...
黄志敏
core
Fault Test of Micro Computer [PDF]
, 1979 When we use a micro computer, we often find it impossible to input from the keyboard and to light the display diode.In this paper, taking the case of the KIM-1 micro computer, as an example, we tried to test each part, and could repair its function by ...
井上 浩
core +1 more source