Results 121 to 130 of about 18,935 (224)
Jianzhu Gangjiegou Jinzhan地震作用下钢桥墩根部易发生屈曲破坏且震后难以快速修复。基于可恢复功能理念与钢桥墩的受力特征，提出一种具备震后易恢复功能的新型箱型钢桥墩。此新型桥墩通过设置可更换的加劲耗能壁板以增强结构的耗能与变形能力，且震后能够快捷更换受损的耗能壁板以恢复桥墩力学性能。为研究设置加劲耗能壁板的箱型钢墩柱的抗震性能，选取耗能壁板上加劲肋的布置形式、轴压比及耗能板强度等作为影响参数进行拟静力试验，且通过有限元数值模拟，综合探讨此类新型试件在地震作用下的力学性能；并对比分析新型桥墩的受力特点和破坏机理 ...
孙德畅 +5 more
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Research Progress on Spudcan Foundation of Movable Jack-Up Platforms [PDF]
[Objective] Movable jack-up platforms have been widely used in various types of marine engineering in recent years. With the development of engineering construction to the deep and distant sea, more complex marine environmental conditions pose ...
Dengfeng FU +5 more
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Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Research on English‐Medium‐Instruction (EMI) highlights inadequate support for students transitioning from L1‐medium‐instruction to EMI. To date, little research has focused on how L2 students’ adaptation to an EMI environment influences their L2 learning motivation (LLM).
Kevin W. H. Tai
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Jianzhu Gangjiegou Jinzhan为研究H型钢钢骨混凝土柱在压弯剪扭复合受力作用下的抗震性能，对7个H型钢钢骨混凝土柱和1个钢筋混凝土柱进行拟静力试验，以探究扭弯比、轴压比、配箍率等对柱试件抗震性能的影响。分析了柱试件在低周反复加载试验中裂缝产生和发展的规律及破坏特征，讨论了各试件的扭矩-扭率滞回曲线、骨架曲线、耗能能力、延性、刚度退化和损伤分析。结果表明：H型钢钢骨混凝土（HSRC）柱在复合受力状态下均发生受扭破坏，其扭矩-扭率滞回曲线呈现捏拢的“S”形。但相较普通钢筋混凝土试件，其承载能力和抗震性能更优。提升扭弯比、轴压比 ...
邱昕玥, 邵永健, 谢强
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Dianci bileiqi, 2000 因为4/10大电流和2ms方波电流对MOA阀片的破坏特性不同,提高MOA阀片4/10大电流冲击耐受能力应与提高2ms方波耐受能力有着不同的解决思路。本文例举了提高MOA阀片4/10大电流冲击耐受能力的方法与途径,并分析了各自的利弊。
闫中华
doaj
From Clueless to Confident: How ChatGPT Transforms Academic Writing in Chinese as a Second Language
International Journal of Applied Linguistics, EarlyView.ABSTRACT Generative artificial intelligence (GenAI) has demonstrated its potential to enhance the quality of second‐language (L2) academic writing. This study used a qualitative approach comprising analysis of ChatGPT usage‐history screenshots, written assignments, and semi‐structured interview data on students’ use of GenAI in their L2 Chinese ...
Lanfang Sun +4 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2015 针对现行部分组合钢-混凝土构件中系杆易于脱落的问题,提出两种系杆改进形式,设计了4根梁试件进行试验研究,考察纯弯与剪弯受力状态下梁的性能表现。试验结果表明:X型与C型系杆均能较好地拉结受压翼缘,受压翼缘在弹性段内没有屈曲;采用了这两种系杆的试件承载能力基本一致;与C型系杆相比,X型系杆对混凝土的约束作用更强,混凝土整体性更好,并且能抑制斜裂缝;纯弯试件与剪弯试件破坏部位的现象主要以混凝土的压溃、受压翼缘屈曲为主,剪弯试件破坏部位还观察到了受拉翼缘的开裂。此外 ...
李炜, 陈以一
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Generative artificial intelligence (GenAI) has emerged as a powerful tool in the Informal Digital Learning of English (IDLE) environment, offering personalized, interactive, and innovative language learning experiences that may enhance learning engagement.
Jin Liu, Meilu Liu, Yuan Yao, Dechao Li
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Synthesizing Empirical Research on Learner Metacognition in Second Language Writing
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite considerable research interest in learner metacognition in second language (L2) writing, there is not yet a review that synthesizes the existing empirical findings and discusses their implications. To fill the void, this systematic review synthesized 39 empirical studies on learner metacognition in L2 writing and examined their salient
Chen Li, Icy Lee, Zhicheng Mao
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