Results 41 to 50 of about 23,545 (152)
Dizhen xuebao, 2018 基于曲线网格有限差分方法研究了垂直走滑断层在不同山体地形情况下的动力学破裂传播，分析并讨论了局部山体地形对断层破裂过程及相应地面地震动的影响，得到了各模型断层面的动力学破裂过程及相应的地表峰值速度特征。研究结果表明，山体地形尺度（山体高度及底部延展距离等）对断层动力学破裂过程影响较大，进而影响到相应的地面地震动分布。当山体地形处于自由地表上亚剪切向超剪切转换的位置附近时，山体地形会阻碍断层面上自由地表超剪切的产生。一般而言，对于具有一定埋深的断层，当山体地形底部延展距离一定时，山体高度越高 ...
Mingfeng Wang +3 more
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The Effects of Gen‐AI on Situated and Future‐Driven Academic Writing Motivation
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite the increasing use of Generative Artificial Intelligence (Gen‐AI) in education, there is still a significant gap in understanding its effects on the situated‐ and future‐driven motivation in academic writing. This longitudinal design‐based research sought to explore variations in academic writing motivation of 110 Chinese university ...
Xiao Hu +3 more
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Jianzhu Gangjiegou Jinzhan平面索网幕墙广泛应用于大型公共建筑，因其具有阻尼小、刚度低、非线性强等特点，使其在强风与地震作用下易出现索力突变、变形过大、面板损伤等不利现象。本文建立了索网幕墙系统的精细化数值模型，量化了风、地震作用下相邻主结构对幕墙动力性能的影响，分析了两种灾害共同作用下的索网动力响应及面板、密封胶安全状态，计算了幕墙的风振系数并与规范参考值对比。研究结果表明：考虑主结构影响的索网幕墙的频率平均减小12 %，地震作用下中部拉索的峰值位移比为6.5，远大于风致响应，索网幕墙的地震响应计算不可忽略主体结构的影响 ...
王国威, 张鹏, 张明, 卢文胜
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四川大学学报. 自然科学版, 1992 应用一级反应的热动力学无量纲参数法,在25和下35℃乙醇—水混合溶剂中,研究了表面活性剂SDS和CTAB对苯甲酸乙酯皂化反应动力学的影响,测定了不同浓度的表面活性剂存在下的反应速度常数.结果表明,SDS胶束对反应有禁阻作用,CTAB胶束对反应基本无影响.
曾宪诚, 何明中, 邓郁, 李干佑
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT In English Medium Instruction (EMI) contexts, students face simultaneous linguistic and academic demands. Although psychological capital (PsyCap) has been recognized as an important psychological resource for academic success, less is known about whether its effects depend on students’ academic English literacy (AEL).
Hao Wu, Heath Rose
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Dizhen xuebao强震条件下地形和岩体物理力学性质的差异会使边坡表现出不同的动力响应特性。为分析河谷岸坡坡度变化与浅表层介质波阻抗变化下的动力响应规律，设定左岸坡度为45°、右岸坡度分别为30°，45°和60°的直线型河谷岸坡模型，同时考虑六种浅表层波阻抗比n为1，1.5，2，2.5，3和3.5，基于离散元软件UDEC对河谷岸坡进行了动力分析。结果表明：① 浅表波阻抗层显著增强了边坡的动力响应，并在坡高1/4以上的坡面有较强体现；② 右岸坡度变化会引起左岸边坡动力响应差异 ...
Wanting Zhang +4 more
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Predictive evolutionary genomics: principles, validation, and practice
New Phytologist, EarlyView.Summary Climate change and habitat loss are driving rapid evolutionary responses in populations world‐wide, which creates an urgent need for evolutionary forecasting in conservation and agriculture. Such forecasting can be categorized into three time scales: trait‐based models that use multivariate quantitative genetic equations to project correlated ...
Daniel Ortiz‐Barrientos +5 more
wiley +1 more source
Zhendong Ceshi yu Zhenduan针对传统盲孔法仅能够测量钻孔深度范围内残余应力均值的缺陷问题，采用逐层钻孔法对14根不同焊接方式和径厚比的Q520高强焊接圆钢管进行纵向残余应力测试。基于实测数据，得到了高强焊接圆钢管截面纵向拉、压残余应力的数值大小、纵向残余应力分布模式以及在钻孔深度范围内的变化规律，研究了埋弧焊（submerged arc welding，简称SAW）、高频焊（high‑frequence welding，简称HFW）以及不同径厚比对截面纵向残余应力分布的影响。试验结果表明：纵向残余应力在钻孔深度范围内逐层减小 ...
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Neutral interactions among non‐native plants are common
New Phytologist, EarlyView.Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He +7 more
wiley +1 more source
Partisanship, Deservingness, and the Attitudinal Policy Feedback Process for Social Policy
Policy Studies Journal, EarlyView.ABSTRACT In an era of identity‐based partisan polarization, we examine whether social policies can still generate positive attitudinal feedback among beneficiaries. Drawing on nationally representative survey data, we demonstrate that partisanship conditions the policy feedback process through divergent perceptions of group deservingness.
Chris Faricy, Christopher Ellis
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