Results 21 to 30 of about 6,291 (116)
The collective application of shorebird tracking data to conservation
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
wiley +1 more source
生物圈保护区通常从内向外划分为核心区、缓冲区和过渡区 (或者外向空间扩张过渡区 ) ;核心区与缓冲区必须明确划定边界 ;过渡区不必划定外围边界 ,被赋予外向空间扩张性。博格达生物圈保护区从内向外划分为过渡区、缓冲区和核心区 ,定义为逆序组织模式。缓冲区边界为内部过渡区设置了空间边界 ,使常规组织模式外围过渡区的外向空间连续扩张性失去意义 ,内部过渡区的空间发展只能采取向内的内部加密方式和向外的跨越空间方式。研究表明 ,内部过渡区跨越外围缓冲区限制的新途径是建立岛国经济外向发展模式 ;经营过渡区要遵循生态
李建新
doaj +2 more sources
文章首先介绍了100Gbit/s波分复用系统中几种常用的光层保护方式,探讨了其技术本质及优劣势,然后结合现网案例进行系统性能模拟分析,最后给出了100Gbit/s波分复用系统保护方式选择的建议。
张国新, 周楠, 周鹤, 解文明
doaj
Automating the analysis of public saliency and attitudes toward biodiversity from digital media
Abstract Measuring public attitudes toward wildlife provides crucial insights into human relationships with nature and helps monitor progress toward Global Biodiversity Framework targets. Yet, conducting such assessments at a global scale presents challenges.
Noah Giebink +8 more
wiley +1 more source
摘要: (免费在线浏览) 随着全军整体护理的开展,我院护理部积极推进系统化整体护理,以护理程序为基础,将护理临床业务和护理管理的各个环节系统化,使整体护理模式病房建设规范化,将整体护理落实到临床护理工作中,使其成为科学、经济、实用、简便的临床护理工作模式。肝胆外科根据科室管理体制特点及人力资源短缺的现状,科学安排工作,合理配备人力,积极开展整体护理模式病房建设,形成了从病人入院到出院24h不间断的、全方位、无缝护理服务,确保护理质量的整体提高,形成具有肝胆外科专业特点的整体护理模式 ...
马昆宏, 任岳波, 吴建中, 等
doaj
Abstract There exists a growing suite of technologies that support significant and exciting progress in biodiversity conservation and research. Citizen scientist participation is common in this research and often focuses on data collection and labeling.
Joycelyn Longdon +5 more
wiley +1 more source
为了避免电力系统中微机保护失灵事故的发生,通过试验研究抑制电快速瞬变脉冲群(EFT)对微机保护装置干扰的措施。首先,改善微机保护装置电源的供电结构,提出一种改进的分布式电源供电方式,增加一个DC 24 V/DC 24 V的开关电源模块,使输入到5 V和±15 V电源模块的24 V电源与驱动出口继电器的24 V工作电源隔离;其次,由于出口继电器操作时引起的EFT对微机保护装置的24 V工作电源有很大的干扰,建立出口继电器电磁耦合模型,制定采用续流二极管和电磁屏蔽措施来抑制二次回路的EFT;最后 ...
王玉峰, 邹积岩, 廖敏夫
doaj
金丝猴为中国特有的珍稀动物,为了进一步保护金丝猴物种资源,我国主要采取建立自然保护区(自然选择)和迁地保护(人工选择)等措施,并取得了良好的效果。迁地保护主要以动物园笼养模式为主,由于动物园笼养模式限制了金丝猴的自由采食和随机交配,对金丝猴营养状况及种群结构产生了一定影响。致使金丝猴营养过剩,同时也使金丝猴种群近交系数增大,对金丝猴的种群繁育造成一定影响。本研究对兰州市动物园川金丝猴的饲养管理及种群现状进行了调查研究,以期为不同年龄段川金丝猴的饲养管理及种群繁育提供参考。
罗鹏 1 雷青海 2 王辉太 2 周晓雯 2 尚志峰 2 张育红 2 吴俊峰 2 薛子钰 2 柳江 2
doaj
ABSTRACT This study examines the evolution of climate change discourse in the United States Congress from 1987 to 2017, employing natural language processing (NLP) techniques to analyze floor speeches. Using a la carte (ALC) word embeddings, we investigate how Democratic and Republican members of Congress frame climate change, focusing on denialist ...
Joseph Charles Van Matre +2 more
wiley +1 more source
Mycorrhiza‐induced alterations in the spatial structure of stands in a subtropical forest
Read the free Plain Language Summary for this article on the Journal blog. Abstract Spatial aggregation patterns represent snapshots of ecological processes that occurred over an extensive period. Such processes can shape both the conspecific and the heterospecific spatial structure of plants across woody habitats.
Jingjing Xi +6 more
wiley +1 more source

