Results 61 to 70 of about 2,938 (184)

Wind Power, Hydropower and Thermal Power Combined Low-Carbon Maintenance Optimization Based on Continuous Hidden Markov Model [PDF]

open access: yes, 2023
[Introduction] In the context of the new power system, low-carbon maintenance of wind turbines and coordinated maintenance with conventional wind turbine generator systems (WTGS) need to be solved urgently.
Min XIE   +4 more
core   +1 more source

基于差分特征注意力机制的无锚框多光谱行人检测算法

open access: yes智能科学与技术学报, 2021
针对多光谱行人检测系统存在特征融合质量低、模型超参数多且锚框匹配算法复杂等问题,提出了一种基于差分特征注意力机制的无锚框多光谱行人检测算法。该算法首先采用差分特征感知融合方法挖掘多模态特征间的互补信息来优化通道特征;然后利用具有高效无锚框机制的CenterNet检测框架大大降低了模型计算复杂度,从而提升检测速度;最后引入差分特征注意力机制,改善特征融合质量,进一步提升检测精度。在KAIST、CVC14和FLIR这3个公开数据集上的实验结果表明,提出的算法和其他先进方法相比,能够同时有效提升检测精度和速度,
沈继锋   +4 more
doaj  

Strengths and complementarity of systematic conservation planning and Key Biodiversity Area approaches for spatial planning

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
In order to achieve Target 1 of the Global Biodiversity Framework there is a need to develop a biodiversity‐inclusive spatial plan for a country. We explore in this paper how criteria‐based approaches, such as the Key Biodiversity Areas programme, benefits the production of such plans and how they can be used to improve Systematic Conservation Planning
Andy Plumptre   +6 more
wiley   +1 more source

Quantitative study on role of flexibility index of coal-fired power units in regulating wind and solar power generation [PDF]

open access: yes
Within the swift progression of renewable energy, particularly wind and solar power, enhancing the regulatory capacity of supporting power sources is crucial. This serves as a vital assurance for the development of new power systems.
Jinming FU   +7 more
core   +1 more source

Towards a global understanding of tree mortality

open access: yesNew Phytologist, Volume 245, Issue 6, Page 2377-2392, March 2025.
Summary Rates of tree mortality are increasing globally, with implications for forests and climate. Yet, how and why these trends vary globally remain unknown. Developing a comprehensive assessment of global tree mortality will require systematically integrating data from ground‐based long‐term forest monitoring with large‐scale remote sensing.
International Tree Mortality Network   +114 more
wiley   +1 more source

Southern flying squirrel use of forests managed for red‐cockaded woodpeckers in East‐Central Mississippi 密西西比中东部红顶啄木鸟繁殖林中的南方鼯鼠栖息地利用

open access: yesWildlife Letters, Volume 2, Issue 3, Page 131-139, September 2024.
Southern flying squirrels (flying squirrel; Glaucomys volans) frequently displace endangered red‐cockaded woodpeckers (RCW; Dryobates borealis) within forest partitions managed specifically for RCW cavities (“cluster partitions”). We found little to no evidence of differences in home range size and composition between flying squirrels within or outside
Robert T. Meyer   +2 more
wiley   +1 more source

完全互补OCDMA系统编解码方案与系统设计

open access: yesGuangtongxin yanjiu, 2008
对双极性光码分多址(OCDMA)系统采用码的单/双极性转换思路,将相关性能更优秀的双极性码应用于传统单极性OCDMA信道中,提出了一种采用双极性完全互补序列的OCDMA编解码方案及系统模型。仿真结果表明,完全互补的OCDMA系统与基于Gold序列的OCDMA系统性能相比有较大的优势。采用完全互补序列作为地址码,可以有效降低OCDMA系统中的多址干扰,提高通信质量。
陈雷   +4 more
doaj  

Establishing a protected area network in Xinlong with other effective area‐based conservation measures

open access: yesConservation Biology, Volume 38, Issue 4, August 2024.
Abstract Protected areas (PAs) are pivotal to biodiversity conservation, yet their efficacy is compromised by insufficient funding and management. So‐called other effective area‐based conservation measures (OECMs) present a paradigm shift and address PA limitations.
Xing Chen   +6 more
wiley   +1 more source

Conception and practice of resource utilization, energization and functionalization of coal mining subsidence areas with high groundwater level [PDF]

open access: yes
Underground coal mining often leads to surface subsidence and water accumulation, changes in the ecological environment, as well as in the spatial pattern of land and water resources, in high groundwater level mining areas.
Liang YUAN, Liangji XU
core   +1 more source

基于生物信息学途径探究载脂蛋白 H 在肝衰竭中的功能及作用机制

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2020
【目的】通过生物信息学方法,分析在肝衰竭中高表达的载脂蛋白H(APOH)在疾病发生发展中的功能与机制。【方法】从GEO数据库下载多个芯片数据集(GSE14688、GSE38941和GSE96851),以5筛选出差异表达基因,通过Cytoscape及R对前10位关键基因中的APOH基因进行GO生物学功能富集分析和KEGG信号通路分析,并进一步在慢乙肝相关肝衰竭组织中进行表达验证。【结果】共筛选出2438个差异表达基因,其中,1162个上调基因,1276个下调基因 ...
曹静   +6 more
doaj  

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