Results 51 to 60 of about 106,544 (192)
International Journal of Applied Linguistics, EarlyView.ABSTRACT This computational linguistic study analyzes 8743 Rednote posts to examine how sentiment, emotion, and content domain collectively shape social comparison dynamics on social media. We identify four key findings: (1) an emotional gradient, where upward comparison content exhibits the highest sentiment scores and downward comparison the lowest; (
Michelle Mingyue Gu +7 more
wiley +1 more source
, 2013 本发明公开了一种可预加应力的薄膜接触角测量系统，包括：夹膜单元，所述夹膜单元为2个以上，用于夹持待测薄膜；径向移动单元，用于在所述待测薄膜的径向方向移动所述夹膜单元；应力检测单元，用于测量所述夹膜单元在夹持待测薄膜并沿径向移动过程中所受到的拉力，从而测得对所述待测薄膜施加的预应力大小。本发明通过径向移动单元在径向方向移动夹膜单元，可以使2个以上的夹膜单元在径向方向同时移动，并通过设置在夹膜单元上的应力检测单元检测所受到的拉力 ...
王子千, 赵亚溥
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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
, 2006 高科技在现代战争中的运用，使得作战环境日益复杂：战况瞬息万变，难以预测。尤其是精确制导导弹的隐蔽性和灵活性，对主战设备坦克、装甲车、自行火炮等构成极严重的威胁。及早发现威胁就成为预警技术的首要任务。光电预警技术是最先进的预警手段，其中的紫外预警以其隐蔽性好、虚警率低、不需低温冷却、体积小、重量轻而倍受瞩目。作为紫外预警系统中的核心器件—紫外探测器就成为研究的焦点。本论文首先分析了国内外紫外探测器的发展和应用，并对其性能和成本作了比较，结合我国紫外探测器的研究现状和需求，设计一种像增强型CCD探测器 ...
张宣妮
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
wiley +1 more source
Jingshui jishu【目的】针对人工调控主导的水库型水源地水位变化规律复杂、传统预测方法精度不足的难题，本文旨在构建并验证一种物理信息融合的多模块机器学习耦合预测框架，以实现对此类水库水位的合理且兼具高时效性的预测，为水库的精细化调度提供决策支持。【方法】本文将该预测框架应用于JZ水库，对水库内运行机理不同的调控单元进行定制化建模：(1)对引水闸门流量预测采用双层级联模式，基于先知模型(Prophet)的闸门开度时序预测与基于极端梯度提升(XGBoost)的流量系数(C d )动态估计 ...
Zhang Wu
doaj +1 more source
, 2011 概括介绍了加卸载响应比的基本思路、基本概念、物理基础、加卸载响应比在地震预测中的应用以及取得的一些成果.加卸载响应比方法物理基础扎实,只需利用地球内部的某些实测数据 ...
袁帅, 梁乃刚, 刘月, 尹祥础
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International Journal of Applied Linguistics, EarlyView.ABSTRACT With the increasing number of Chinese international students in Australian universities, intercultural competence has become a critical factor influencing their interactions with Australian tutors in university classroom settings. Existing research often examines students’ intercultural competence from a single‐method or single‐perspective ...
Jiangyu Han, Linda Tsung
wiley +1 more source
Gaoya dianqi, 2018 文中提出了一种基于改进支持向量机的变压器实时热点温度预测方法。该方法以变压器负载电流、环境温度和顶层油温为特征值,将变压器热点温度预警与预测相结合,目的在于实现基于近期历史运行数据的变压器实时热点温度预测。文中研究分析了基于改进网格搜索、遗传算法及粒子群算法的支持向量机在变压器短期热点温度预测中的应用效果,结果表明,3种改进方法均可有效提升预测精度,但基于改进网格搜索算法的支持向量机预测效率最高。最后,以某35 k V油浸式变压器实时热点温度数据为样本集,文中所述方法可有效实现变压器短期热点温度预警预测,
廖才波 +5 more
doaj
, 2012 编者按：力学研究所以白以龙院士为首的研究团队多年来对演化诱致灾变问题进行了系统而深入的探讨，先后发表过一系列研究成果，例如：《材料的不稳定性》(1995)，《固体的破坏》(1998)，《固体损伤的演化诱致突变和预测》(1999)，《内禀Deborah数在破坏现象中的意义》(2004)和《细观强度非均匀性导致的破坏的非通常行为》(2009)，等等。这些研究深入分析了材料损伤破坏的机制，并对自然灾害(如地震)和重大工程安全(如水坝)的预测预报具有重要意义。征得白以龙院士的同意，本刊在此选登 ...
白以龙, 柯孚久, 夏蒙棼
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