Results 11 to 20 of about 10,240 (187)
Integrative Conservation, EarlyView.This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara +3 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu +6 more
wiley +1 more source
Stability Analysis of Foundation Pit Based on Inserted Depth and Brace Position of Pile [PDF]
, 2013 基坑的设计和施工涉及地质条件、岩土性质、场地环境、工作要求、地下水动态、施工步骤和方法等众多复杂问题，是一门理论上尚待发展完善的综合技术学科。基坑稳定性分析是基坑工程中的主要研究内容之一，同时也是基坑设计及施工中不可或缺的一项内容，对基坑工程的经济安全起到至关重要的作用。本文从入土深度及支撑设置的角度对排桩基坑稳定性展开分析，对现有的稳定性分析理论及实用稳定性安全系数算法进行完善和补充，深入探讨入土深度及支撑设置与基坑稳定性间的相互关系，具体的研究内容如下： （1 ...
沈守鸿
core
Research on lateral load reduction mechanism of anchored sheet pile wall by deep cement mixing pile in active zone [PDF]
The lateral retaining effect of deep cement mixing piles has gradually gained attention in the application of retaining structures, such as foundation pits and wharves in soft soil areas.
CHEN Shengyuan, DAI Jiqun, GUAN Yunfei , CAI Zhengyin, HAN Xun
core +1 more source
Research on Dynamic Stock Selection by Panel Logit Model Based on Financial Data and Valuation Index [PDF]
, 2015 本文通过主成分分析方法以及面板Logit模型建立了一个基于财务与估值指标的动态选股模型，使其既可为一个长期的选股策略被单独使用；亦可为事件型选股以及市场技术面选股提供一个先期的初选股票池，以提高量化选股的科学性和严谨性。针对财务数据和市场数据更新频率不同的难题，提供了一个两阶段的股票筛选方法；同时在进行个股投资时，也能为个股的财务基本面进行综合评分，以辅助投资者进行投资决策。 在模型构建的过程中，本文运用了更符合实际的数据处理方式。同时专注于有效信息挖掘，避免在因子规模上进行粗放式竞争 ...
杨松
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Controlling influence of the “perched water structure” on rainfall-induced landslide: A case study of the Yaogou landslide in Zhushan County, Hubei Province [PDF]
The Yaogou landslide, located in Zhushan County, Hubei Province, exhibits distinctive aquifer characteristics and varying permeability, leading to the retention of groundwater within the landslide after rainfall, forming confined water.
Lihua LI +3 more
core +1 more source
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
, 1994 对渤海老二号平台１９６８年被大冰推倒这一重大事故进行了全面的调查和分析;描述了平台破坏的全过程。指出平台倒塌是由３个方面的综合因素导致的;而破坏的本质原因是冰激振动产生的疲劳损伤发展到一定程度后;疲劳裂纹的低温脆性扩展而使桩腿失去了承载能力。为此;总结出海冰环境中设计平台的７点经验;供从事我国辽东湾平台的设计、制造 ...
方华灿, 段梦兰, 陈如恒
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang +11 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 为研究设置新型自复位节点的钢框架结构体系的整体抗震性能，建立了1个传统焊接框架体系和3个新型自复位节点的框架结构体系有限元模型。对比分析了新型自复位节点框架结构体系与传统焊接框架结构体系的位移响应，并研究了不同地震波作用下新型自复位节点在结构不同位置的整体性能。分析结果表明：新型节点框架结构体系传力稳定，均未出现明显的损伤变形，且其顶点最大位移与总高度之比均小于钢框架弹塑性位移角1/50的限值，满足抗震要求；新型节点框架结构体系最大层间位移角均出现在首层，但最大层间位移角均保持在0.03 rad以内 ...
李万润 +3 more
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