Results 31 to 40 of about 10,101 (116)

Using camera traps to enhance community‐based management of subsistence hunting in the Amazon

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract Community‐based management and monitoring of biodiversity has emerged as a cost‐effective strategy for providing credible data, informing decision‐making, and empowering local communities in resource governance and management. However, the establishment of community‐based management of subsistence hunting in the Brazilian Amazon has been ...
Ricardo Sampaio   +3 more
wiley   +1 more source

河南省鸟类新纪录种——灰翅鸫(Turdus boulboul)

open access: yes野生动物学报, 2020
在整理2015—2018年的红外相机数据中,在河南内乡宝天曼国家级自然保护区2个调查位点拍摄到了4组独立照片,经鉴定为灰翅鸫(Turdus boulboul),雌鸟和雄鸟各有2次记录,并确认为河南省的鸟类新纪录物种。
姚松 1   +6 more
doaj  

人工智能技术在西双版纳野生亚洲象监测预警中的首次应用

open access: yes野生动物学报, 2023
2019—2020年在云南西双版纳构建了野生亚洲象(Elephas maximus)监测预警体系,大量布设红外相机采集亚洲象活动数据,通过移动网络传输至数据管理平台,采用人工智能技术识别亚洲象影像,统计分析后借助移动网络将预警信息自动发布到当地村寨预警广播和手机APP、微信及短信,达到自动预警的目标。2021年1—6月,在景洪市、勐海县和勐腊县布设的579台红外相机通过移动网络自动传输数据 294 381条到数据管理平台,数据管理平台的人工智能识别系统共挑选出野生亚洲象照片及视频4 666条 ...
王曼   +9 more
doaj  

Automated multivolume placental reconstruction using three‐dimensional power Doppler ultrasound and infrared camera tracking

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.
ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue   +5 more
wiley   +1 more source

A new dawn? Population baselines of snow leopards and other mammals of the Kishtwar High Altitude National Park, India 新的曙光?印度基什特瓦尔高海拔国家公园雪豹和其他哺乳动物的种群基线

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 271-280, September 2024.
The Greater Himalayas in India, of which Kishtwar High Altitude National Park (KHANP) is a part, harbours potential snow leopard habitat. We sampled three catchments within the Dachhan region of KHANP using 44 cameras and identified four unique snow leopard individuals across 14 detections in nine camera locations.
Munib Khanyari   +8 more
wiley   +1 more source

珲春再现东北虎

open access: yes野生动物学报, 2004
2004年1月16日夜,吉林珲春自然保护区管理局使用国际野生生物保护学会捐赠的远红外线自动照相机第二次成功拍摄到野生东北虎照片。
李志兴
doaj  

基于无人机红外测试的500kV架空线路在运复合绝缘子温度场特征分析

open access: yesDianci bileiqi, 2020
为提升现场复合绝缘子红外测试判定准确率,对现场新投运的123支500 kV复合绝缘子开展基于无人机的红外测试,并提取复合绝缘子温度曲线,统计温差、温度梯度特征,对正常复合绝缘子自身不同部位温度差异的原因进行了讨论,并给出了抑制温度曲线高频干扰的方法。结果表明,现场正常复合绝缘子有相当比例温差超过2 K。正常复合绝缘子温度曲线存在高频变化分量,其来源于伞裙与芯棒之间的温差、红外图像清晰度不足产生的局部温度振荡。通过小波分解与低频分量重构,可有效抑制上述高频分量产生的温差,从而减小现场红外测试结果误判概率。
李特   +6 more
doaj  

风力对1100 kV GIS出线套管局放缺陷时温度特征的影响分析

open access: yesGaoya dianqi, 2023
对于500 kV及以下的GIS出线套管,利用红外测温的手段诊断内部局放缺陷已有比较丰富的经验和案例,而用于特高压变电站的1 100 kV GIS出线套管体型高大,内部屏蔽结构相对复杂,缺乏相关缺陷诊断经验,且其表面温度会不可避免的受到外界风力影响。对于某些特殊环境和地区,若等待风速满足红外测温要求则可能延误诊断时机,造成缺陷的进一步发展,因此有必要研究风力对1 100 k V GIS套管局放缺陷时温度特征的影响。文中建立1 100 kV GIS套管的三维温度场仿真模型 ...
张丕沛   +4 more
doaj  

Rarest of the rare: People's awareness and perceptions about the woolly flying squirrel in Uttarakhand Himalaya, Northern India 珍稀中的珍稀:人们对印度北阿坎德邦喜马拉雅地区毛绒飞鼠的认知和看法

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 281-285, September 2024.
The endangered Western woolly flying squirrel faces an uncertain future despite its rediscovery. This study in Uttarkashi, India revealed a significant knowledge gap among local communities, emphasising the need for targeted conservation education.
Hiranmoy Chetia, Murali K. Chatakonda
wiley   +1 more source

基于红外相机影像的中华穿山甲体长估计和个体识别

open access: yes野生动物学报
中华穿山甲(Manis pentadactyla)夜行穴居,体表覆盖鳞片,个体外观特征差异较小,基于红外相机影像拍摄到的体貌特征进行个体识别较难,因此探讨一种基于红外相机影像与比例尺估测体长进行中华穿山甲个体识别的方法。在笼舍内布设不同高度的红外相机并拍摄中华穿山甲影像,利用ImageJ软件计算中华穿山甲在红外相机影像中的体长测量值,并计算在不同高度条件下红外相机拍摄的中华穿山甲体长误差值。结果表明:红外相机最佳的布设高度为0.8 m,相对误差为2.76%。基于上述结果 ...
张奕航   +6 more
doaj  

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