Results 31 to 40 of about 1,210,655 (177)
, 1958 目录第一章 基本概念和定义1. 问题的提法2. 稳定的定义3. 干扰运动的微分方程4. 按李雅普诺夫意义的稳定以及其他一些稳定的定义5. 关于解决稳定问题的方法第二章 对于定常运动的李雅普诺夫第二种方法6. 基本定义7. 函数的定号性及变号性的准则8. 定号的函数的几何解释9. 关于运动稳定的李雅普诺夫第一定理10. 关于运动稳定的李雅普诺夫第二定理11. 前述定理的几何解释12. 前述定理应用举例13. 关于不稳定的李雅普诺夫第一定理14.
(苏)马尔金著, 解伯民等译
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Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
International Journal of Applied Linguistics, EarlyView.ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren +3 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Studies on classroom interactions suggest that displaying affiliation through linguistic and multimodal resources could promote positive emotions like enjoyment, thereby enhancing engagement and enthusiasm in second/foreign language learning.
Karen C. K. Choi, Kevin W. H. Tai
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The Development and Validation of the Chinese Vocabulary Levels Test
International Journal of Applied Linguistics, EarlyView.ABSTRACT In response to the increasing need for effective Chinese vocabulary assessments, this study developed the Chinese Vocabulary Levels Test (CVLT), a test designed for intermediate‐level Chinese as a second or foreign language (CSL/FL) learners, based on the vocabulary lists (levels 4–6) from the Chinese Proficiency Grading Standards for ...
Shiwei Qi, Ailan Fu
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四川大学学报. 自然科学版, 1979 关于丢番图方程x4-Dy2=1,D>0,且不是平方数,（1）Ljunggren,Cohn和本文作者都有过不少工作,现简述如下:1.1942年,Ljunggren证明了丢番图方程（1）最多只有二组正整数解（x,y）。2.1966年,Ljunggren证明了,当D=ρ是一个奇素数时,则丢番图方程（1）在ρ≠5,29时,没有正整数解。在ρ=5时,仅有正整数解x=3,y=4,在ρ=29时,仅有正整数解x=99,y=1820。
柯召, 孙琦
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The Impact of AI‐Assisted L2 Learning on Learners’ Emotions: A Meta‐Analysis
International Journal of Applied Linguistics, EarlyView.ABSTRACT The scope of research on AI‐assisted second/foreign language (L2/FL) learning has expanded beyond learning outcomes to focus on learners’ emotional experiences. Despite their proliferation, existing empirical findings are inconsistent, and few studies have systematically synthesized the impacts of AI‐assisted L2 learning on learners’ emotional
Jiaqi Jing +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT In this study, control–value theory (CVT) was used to investigate how students’ perceptions of the classroom environment shape their anxiety in the context of English as a foreign language (EFL) learning through the mediating effects of control and intrinsic value appraisals.
Quan Qian, Xianhan Huang
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Second/foreign language (L2) learning is not solely a cognitive/linguistic acquisition process but includes mixed emotional experiences. Understanding how these emotional experiences relate to resilience could help our understanding of how learners navigate fluctuations in emotions when learning an L2.
Xinjie Chen +5 more
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, 2006 对能够求解一系列线性常微分方程组边值问题的数值计算方法--离散正交法(DOM)进行了离散点的正交分析,给出了计算机实现数值计算的程序设计原理与计算流程图,指出了该方法能够克服传统计算方法由于所求函数的快速增长所引起的边界效应和局部效应的缺点,给出了得到稳定计算过程的可能性.为了推广应用,文中介绍了离散正交法的基本原理、实现方法和求解过程,讨论了采用离散正交法来求解非线性问题的处理方法.并且以承受均布载荷的环形板为例 ...
白象忠, 田振国
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四川大学学报. 自然科学版, 2000 推广了通常的半群的强半格分解的定义 ,得到 ρG 强半格的定义 .并用 ρG 强半格分解研究了 Green关系H 分别是正则带同余、右 (左 )拟正规带同余和正规带同余的超富足半群的半格分解问题 .
孔祥智
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