Results 21 to 30 of about 12,132 (169)
Differences in characteristics between naturalized threatened plants and other threatened plants
Conservation Biology, EarlyView.Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao +10 more
wiley +1 more source
Health status assessment for ship diesel engines based on LSTM prediction and cloud barycenter model [PDF]
ObjectiveIn response to the development needs of smart engine rooms on ships, this paper proposes an assessment method for the health status of ship diesel engines.
Chao LIU +3 more
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Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
, 2019 智能电能表运行状态评估包括可靠性分析、电能表故障分析以及电能表可靠性寿命预计；针对目前智能电能表运行状态评价研究所必须面对的问题，对当前应用于智能电表状态评估的质量评价方法、异常分析和故障预测算法、寿命预测算法等内容进行了梳理和对比，盘点智能电表运行状态评价技术的研究现状和最新研发进展；最后从智能电表数据特点的角度阐释了目前应用算法的特点和不足，并探讨了研究基于多源数据融合技术的智能电表运行状态评估技术的必要性、可行性和努力方向，为智能电表数据数据分析技术和状态评估技术提供可靠的借鉴意义 ...
吉莹, 商曦文, 张建寰
core
Research on Predictive Maintenance Mode of Air Preheater Based on Digital Twin [PDF]
ObjectivesIn order to solve the shortcomings of the traditional preventive maintenance method of air preheater in large thermal power unit, a general mode of predictive maintenance based on digital twin was proposed, and the digital twin system of air ...
CHEN Lian +12 more
core +1 more source
Cost Benefit Analysis for Maintenance Strategy of Gas Turbine Inlet Filtration System [PDF]
, 2022 Maintaining the normal operation of inlet filtration system is of great significance to ensure the operation efficiency of gas turbine unit. The maintenance economic benefit analysis model of gas turbine inlet filtration system was established, and the ...
DENG Gaofeng +6 more
core +1 more source
Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, EarlyView.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
Study on Vibration Characteristic of Operational Bridge Based on Monitoring Data [PDF]
, 2016 桥梁结构监测系统能够对结构进行实时自动的状态监测，为评价运营桥梁的承载能力、使用功能和安全可靠性提供数据基础。近年来因为缺乏科学监测与管理所引起的桥梁垮塌事故频频发生，因此有必要利用监测数据对重要大桥的结构运营状态进行评估。本文基于厦门天圆大桥结构监测系统的实测数据，对单拱肋中承式梁拱组合桥型的振动特性进行研究，重点包括大桥的模态参数识别与短吊杆疲劳寿命估计两方面。本文主要工作内容如下： 首先，阐述了桥梁结构监测系统与模态分析方法的发展现状，总结了中承式拱桥结构特点与短吊杆疲劳问题 ...
何文朋
core
Research on Human Health States Assessment Model Based on AHP-EWM in Multiple Scenarios [PDF]
To solve the problem of insufficient personalized monitoring in human health assessment methods and meet the demand for fine-grained health status assessment in different scenarios, a multi-scenario-based human health status assessment method is needed ...
Jiuyuan HUO, Hongyang WANG, Tao JU, Jun HU
core +1 more source