Results 51 to 60 of about 256,015 (173)
Harnessing social media data to track species range shifts
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs and citizen science data remain heavily biased toward the Global North. Especially in megadiverse countries with limited biodiversity records, incorporating social media data can help address existing data gaps.
Shawan Chowdhury +15 more
wiley +1 more source
野生动物学报, 1994 貉貉（ＮｙｃｔｅｒｅｕｔｅｓＰｒｏｃｘｏｎｏｉｄｅｓＧｒａｙ）属于食肉目犬科。主要分布于亚洲东南部。在原苏联分布在黑龙江流域、乌苏里江流域向北分布到萨哈林半岛。在中国分布在东北、华北、华中、华南和西南地区一直延伸到越南北部。在日本和朝鲜半岛也有分布。...
高犁为
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Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, EarlyView.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
Gaoya dianqi, 2009 笔者提出应用ART算法根据测量得到的两个垂直方向上的弧根线性电流分布重建弧根电流密度分布的方法。对Drouet M G实验测量的弧根在2个互相垂直方向的电流分布进行计算,获得了2-D弧根电流密度分布并加以讨论。结果表明,ART重建算法结合分离极板法所测的弧根电流分布是获得其电流密度分布的一个切实可行而有效的途径。
徐铁军, 荣命哲, 吴翊, 马强
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, 2015 東京海洋大学博士学位論文 平成25年度(2013) 応用環境システム学 課程博士 甲第330号指導教員: 北出裕二郎全文公表年月日: 2014-06 ...
程 霊巧
core +1 more source
Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, EarlyView.Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman +6 more
wiley +1 more source
Research on Face Load Distribution for Narrow Helioal Gears
Jixie chuandong, 1994 本文用三维边界元程序计算了窄斜齿轮在不同接触线上的载荷分布，分析了齿轮齿面载荷的分布规律。同时还计算出齿轮副的平均刚度ｋｎ１和载荷分布系数Ｋβ计算结果表明荷载分布规律与轴向重合度εβ及传动比有关，载荷分布系数Ｋβ在１．０４至１．２３之间。
王宪法
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The Analysis of China‘s Wage Profile and its Determinants: based on the Data from CHNS Questionnaire Surveys. [PDF]
, 2016 工资问题研究一直是劳动经济学领域的热点问题。中国改革开放以来，劳动力市场发生了巨大的变化。我国劳动力工资分布如何？劳动力工资的决定因素有哪些？本文将对我国劳动力市场这些基本而重要的问题，利用代表性的微观调查数据和前沿的计量经济学方法，进行科学的考察和分析。 文章第一部分首先分别考察工资-时间分布和工资-年龄分布。工资-时间的分布符合中国经济实际增长的情况，保持了稳步增长的趋势。工资-年龄分布在总体上以及男性群体、东部省份群体、大学及以上群体、城市地区、私营三资企业群体符合倒U型分布，实际工资在50 ...
翟柯
core
Taxonomic and functional diversity of urban bees of the world
Conservation Biology, EarlyView.Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 1995 对中国降雨侵蚀力Ｒ值的计算与分布进行了系统研究。主要内容包括Ｒ指标的确定；次降雨Ｒ失真、Ｒ值以及多年平均Ｒ值的简易计算方法；我国不同地区年Ｒ值的月分布、次分布、频率分布和年际变化特征，以及Ｒ值的雨量、雨强分布特征；对我国１４０多个重点站的Ｒ值进行了计算；在分析我国降雨侵蚀力Ｒ值区域分布特征的基础上，编制了中国降雨侵蚀力等值线图，进行了降雨侵蚀力分区。
王万中 张宪奎
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