Results 41 to 50 of about 40,893 (182)
International Journal of Applied Linguistics, EarlyView.ABSTRACT The current study set out to contribute to the burgeoning research area of out‐of‐class L2/FL learning by examining, specifically, English learners’ extramural engagement with watching movies/videos and/or listening to songs (i.e., exposure to audiovisuals).
Art Tsang, Susanna Siu‐sze Yeung
wiley +1 more source
雌甾结构改造的合成 Ⅳ.2-甲氧基炔雌醇及其3-甲醚的合成,LOUDON邻羟化反应
四川大学学报. 自然科学版, 1976 从雌二醇-17β出发,经过Loudon邻羟化等反应,合成了2-甲氧基炔雌醇等雌甾化合物。对各步反应的条件及方法作出了改进。本合成工作同前报所合成的2-羟基炔雌醇3-甲醚的结构形成互相验证。
李聚才 +11 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study conducted linguistic analyses of the written corrective feedback (WCF) for Chinese as a second language (CSL) provided by chat generative pre‐trained transformer (ChatGPT) and human teachers (including preservice teachers and senior teachers).
Ling Zhang +2 more
wiley +1 more source
Learner‐Focused Strategy Instruction From the Teachers’ and the Learners’ Perspective
International Journal of Applied Linguistics, EarlyView.ABSTRACT Numerous large‐scale quantitative studies have been conducted to yield a macro‐level picture of the effectiveness of strategy instruction. However, little is understood about learners' actual processing of strategy instruction and interaction with the teachers delivering it.
Isobel Kai‐Hui Wang, Andrew D. Cohen
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Gaoya dianqi, 2016 以国际电工委员会（IEC）和中国关于高压断路器合成试验的相关标准为依据,笔者提出了一种基于有源触发快速合成关合试验回路,分析了试验过程,解决了合成关合试验的技术难点,介绍了三球双间隙点火均压回路结构特点,充分体现其安全可靠和稳定的性能。有源触发回路具有快速及时、点火功率大和抗干扰能力强的特点,对回路调试过程中碰到的技术问题进行归纳,并提出解决方法,回路建成后成功完成了多个电压等级的全电压关合试验,给出短路额定参数126 kV/40 k A六氟化硫断路器的合成关合试验结果。
吴松, 罗时聪
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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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四川大学学报. 自然科学版, 2014 冲突证据合成作为研究热点,由于发现Dempster-Shafer合成可能导致悖论,至今仍然没有统一的解决方法.本文提出了一种新的冲突证据合成方法.融合系统中各证据的重要程度可能不同,新方法首先通过融合多证据距离,从而可以更加准确地得到证据距离,进一步通过相关算法转化证据距离为证据权值,权值反映了证据的重要程度,根据权值,对原始的基本可信度分配函数进行重新分配,再通过改进的合成公式,对重新概率分配的证据进行合成,得到合成结果.通过具体的算例比较,说明新方法在合成冲突证据方面具有一定的优越性.
夏桂书, 路晶, 魏永超
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Fushe yanjiu yu fushe gongyi xuebao本研究提出了一种基于数字微流控芯片的18F-AlF-NOTA-奥曲肽合成新工艺。通过介质上电润湿（EWOD）技术，在微流控芯片上实现了多通道并行合成，有效解决了传统合成方法中的技术复杂、成本高、生产效率低，以及安全与环保等问题。在优化后的反应条件下（反应温度120 ℃、反应时间5 min、前体质量浓度0.2 mg/mL），最高放射化学产率达到了24.85%，且产品放化纯度大于99.0%。该方法显著降低了设备初始投入（下降50%~60%）和单次合成成本（下降71%~72%），还大幅缩短了合成时间至15 ...
王 飞鸿 +9 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT In English medium instruction (EMI), students face cognitive and emotional demands in second language (L2) communication, which may hamper their motivation and willingness to communicate (WTC). Adopting a mixed‐methods design, this study explores how growth mindsets affected student motivation (e.g., ideal L2 self and ideal disciplinary self ...
Pengzhan Yang +2 more
wiley +1 more source
四川大学学报. 自然科学版, 1982 本文报导一种合成标题化合物的简化路线,其中包含着由炔二醇的环化及其所形成的四氢茚满酮的角甲基化的一系列反应。从而构成一种可用于甾体化合物合成的简捷、实用的扩环与角甲基化方法.
艾克蕙, 翁建华, 赵华明
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