Results 21 to 30 of about 22,433 (139)
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
Jianzhu Gangjiegou Jinzhan, 2023 为研究部分包裹钢-混凝土组合轴压柱的整体稳定性能与设计方法，完成了两个试件的试验。利用有限元软件ABAQUS建立部分包裹钢-混凝土组合柱数值分析模型，并对比试验数据校核模型准确性。利用该数值模型进行参数分析，考虑材料强度、组合柱长细比、含钢率、纵筋和系杆的布置对该类轴压构件整体稳定性能的影响，分别获得不同因素影响下构件绕强轴和绕弱轴的极限承载力。结果表明，材料强度、系杆间距及含钢率对稳定性能的影响均较为显著，纵筋对轴压稳定性能的影响可以忽略。基于数值模拟结果，按照不同含钢率进行归类分析 ...
兰寒枫 +5 more
doaj
Study On Structure Mechanics Analysis Of High - rise Isolated Buildings In Moderate Earthquake Intensity And High Wind Pressure Area [PDF]
, 2017 隔震建筑经历了实际地震的考验，表现出了优良的减震性能；目前，人们对于高层隔震建筑的减震原理并未清晰，高层隔震建筑也存在结构倾覆稳定的问题，隔震技术并未广泛的应用于高层建筑中。高层隔震建筑在减震与抗风方面对隔震层刚度的要求存在矛盾之处，结构减震效应与风控的均衡，尤其是中烈度高风压地区，是个很有研究价值的课题。 本文对高层隔震建筑隔震层的设计展开了详细的介绍，输入三维地震波，验算了本文研究案例隔震层设计的可行性。从模态分析与反应谱分析的角度，研究了高层隔震建筑的减震原理；分析了高层隔震建筑在设防烈度为7度 ...
廖才振
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Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
He jishu兆瓦级核反应堆结合氦氙布雷顿循环系统能有效满足大型深空探测器、星表基地、深海无人潜航器等特种能源动力装置对大功率、小型化、高可靠电源供应的需求，具有广阔的应用前景和研究价值。目前对氦氙混合气体在非理想状态下的物性研究尚不充分，本文构建了非理想状态下氦氙混合气体的物性计算模型，采用浸没式次临界安全空间反应堆氦氙布雷顿循环系统为研究对象，对氦氙混合气体物性模型进行了验证，分析了不同温度、压力和氦气摩尔分数下氦氙混合气体的物性对绝热系数 ...
赵 正成 +3 more
doaj +1 more source
Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
wiley +1 more source
, 2019 文章对各种高层结构体系的实用性和经济性效果比较后,26层住宅楼设计采用框架-剪力墙结构形式。在风和地震作用下,对其各项指标进行分析比较,说明采用框架-剪力墙结构形式能更好地体现结构的整体性、延性、耗能 ...
郭培成
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Profiling Metacognitive Knowledge and Growth Mindset in EFL Vocabulary Learning
International Journal of Applied Linguistics, EarlyView.ABSTRACT Guided by the self‐regulated learning (SRL) framework, the present study investigates the associations between metacognitive knowledge and growth mindset in EFL (English as a Foreign Language) vocabulary learning, addressing a critical gap in the literature. While metacognitive knowledge, comprising person, task, and strategy dimensions, plays
Weili (Allen) Xing, Mark Feng Teng
wiley +1 more source
, 2011 风荷载是高层建筑结构设计的控制性荷载之一,其取值大小直接影响到高层建筑结构的安全性与舒适性。本文构建了一个基于互联网应用程序的高层建筑抗风数据库平台,详细描述了该网络数据库平台的基本框架、软件设计及工程应用。应用结果表明,该平台能将大量风洞试验数据进行整理、存储、在线计算,得到结构设计所需的风荷载,并通过Internet向公众开放,可大大减少传统规范中运用表格、图表以及拟合公式所带来的误差 ...
张建国
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