Results 31 to 40 of about 15,596 (119)
Beyond Motivation: Modeling the Predictive Role of L2 Pride in Informal Digital Learning of English
International Journal of Applied Linguistics, Volume 35, Issue 4, Page 1938-1952, November 2025.ABSTRACT This study investigates the role of second language (L2) pride—an understudied affective factor—in shaping learners’ language learning motivation and involvement with informal digital learning of English (IDLE). Drawing on questionnaire data from 1388 Chinese university EFL students, the study employs structural equation modeling to examine ...
Minlin Minny Zou +3 more
wiley +1 more source
Integrative Conservation, Volume 3, Issue 4, Page 312-329, December 2024.Biosphere reserves aim to protect global biodiversity alongside social and economic development. In the Cape Floristic Region, biosphere reserves are an effective conservation approach to protect arthropods against habitat transformation in this biodiverse region.
Michael J. Samways +3 more
wiley +1 more source
钢网格盒式结构空腹楼板与柱相交组合节点及纯钢节点的抗震性能试验研究
Jianzhu Gangjiegou Jinzhan, 2018 为研究钢网格盒式结构空腹楼板与柱相交节点的抗震性能及空腹楼板上覆现浇钢筋混凝土层对节点抗震性能的影响,开展了2个边柱组合节点、2个边柱纯钢节点的低周反复加载试验。分析比较了节点的破坏模式、滞回曲线和耗能能力。试验结果表明:钢网格盒式结构的纯钢节点和组合节点滞回曲线比较饱满、稳定,具有良好的延性和耗能能力,盒式结构节点抗震性能良好。相对于纯钢节点而言,组合节点由于混凝土层的抗压和钢筋的抗拉作用,其承载力、刚度和耗能性能均有一定程度的提高,在对节点承载力和抗震性能的分析中 ...
孔丹丹 +4 more
doaj
Community perceptions of invasive species and environmental management in a US island territory
Conservation Biology, Volume 38, Issue 6, December 2024.Abstract Environmental managers struggle with communicating accurate and relevant information and with gaining trust from the communities they serve, problems that are especially pronounced in minority and colonized communities. An important step in developing successful management strategies is partnering directly with the communities involved, but ...
Ann Marie Gawel +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 为了研究钢网格盒式结构体系空腹桁架与柱弱轴相交节点的抗震性能,设计制作了2个边柱纯钢节点和1个带混凝土板的边柱组合节点,进行低周反复荷载试验,比较和分析节点的试验现象、破坏模式、承载力、滞回曲线、延性和耗能性能等指标,并利用ABAQUS进行详细计算和对比分析,并在此基础上对采用不同构造措施的节点试件进行有限元模拟分析。结果表明:钢网格盒式结构体系空腹桁架与柱弱轴相交的纯钢节点和组合节点具有良好的抗震性能,上、下弦间加劲肋有助于提高节点的延性和耗能能力,相对于方形加劲肋 ...
孔丹丹, 张文烽, 赵欣
doaj
World Water Policy, Volume 10, Issue 4, Page 1187-1222, November 2024.Abstract The inherent complexity of governing transboundary social–ecological systems like the Cubango‐Okavango River Basin (CORB) has given rise to various governance frameworks like integrated water resource management (IWRM) and adaptive governance. While these may work in theory and some specific contexts, current discordance between formal (state)
Victoria Shifidi +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2022 提出一种新型波纹侧板钢管混凝土组合柱-钢梁框架节点形式——在节点核心区沿钢梁上下翼缘方向设置贯通隔板，梁翼缘设置加强板，柱四角布置方钢管并沿高度方向焊接波纹侧板形成钢骨架，骨架腔内灌注混凝土。利用ABAQUS软件建立有限元数值模型，并与常规节点的滞回性能、受力特性和破坏模式进行对比，发现设置加强板能有效提高节点的承载力，且能使塑性铰沿翼缘外移，两类节点的滞回曲线均较为饱满，耗能性能和延性较好。分析加强板厚度、混凝土强度、柱钢材强度等因素对此类节点抗弯承载力的影响，结果表明：加强板厚度、钢梁钢材强度 ...
周杭飞 +5 more
doaj
Wildlife mortality risk posed by high and low traffic roads
Conservation Biology, Volume 38, Issue 2, April 2024.Abstract Wildlife mortality due to collisions with vehicles (roadkill) is one of the predominant negative effects exerted by roads on many wildlife species. Reducing roadkill is therefore a major component of wildlife conservation. Roadkill is affected by various factors, including road attributes and traffic volume.
Dror Denneboom +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 为研究泰姆科节点剪切刚度对铝合金单层球面网壳稳定承载力的影响，建立了单层球面网壳多尺度分析模型，结果表明泰姆科节点单层球面网壳承载力随跨度的增大而减小，随矢跨比的增大而增大。当网壳达到稳定极限承载力时泰姆科节点发生弯曲变形的同时伴随着剪切变形。通过对比单层球面网壳多尺度模型和弹簧单元模型的双重非线性稳定分析结果，发现节点剪切变形对结构承载力的降低程度随网壳跨度及矢跨比的增大而减小。最后，提出了一种可综合考虑泰姆科节点弯曲变形和剪切变形的节点“组合模型”，并验证了该模型能精准地反映泰姆科节点的力学性能。
芦燕, 彭冠楚, 张晓龙
doaj
Jianzhu Gangjiegou Jinzhan, 2019 在考虑往复荷载作用下混凝土材料的刚度损伤和恢复,以及钢材的包辛格效应的基础上建立了钢管混凝土叠合柱-钢筋混凝土梁节点在柱端恒定轴压力和梁端往复侧向力共同作用下的有限元分析模型。有限元模型考虑了几何非线性和材料非线性的影响,并合理考虑了节点核心区各组件之间的接触作用。采用有限元模型模拟了4个组合节点试件的滞回试验,计算的破坏模态和荷载-位移滞回曲线均和试验结果吻合良好。在此基础上,利用该模型对节点受荷全过程的工作机理进行了分析,细致剖析了节点区各部件的应力、应变发展状态以及节点的破坏机理。此外 ...
廖飞宇, 赵剑, 尧国皇, 韩浩
doaj