Results 41 to 50 of about 26,958 (133)
利用坡面薄层水流的电解质脉冲数学模型,计算了不同坡度和含沙量下的电解质弥散系数,发现在泥沙含量较低时,弥散系数与水流速度有较好的线性相关性,但泥沙含量较高时,泥沙含量对弥散系数作用更加强烈,弥散系数与速度的相关性较差,说明弥散系数受泥沙含量和水流速度影响,但三者的关系函数有待于进一步探讨。
夏卫生 雷廷武 赵军
doaj
Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study
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
wiley +1 more source
利用衰减全反射红外光谱技术,对赛加羚羊等3个物种共49份相关样本进行检测、分析并计算其相关系数,结果:同支羚羊角壳不同取样部位红外光谱相关系数为96.69%—99.43%;不同羚羊角壳相同取样部位红外光谱相关系数为94.24%—99.43%;不同物种角质壳红外光谱相关系数为99.28%—99.47%;羚羊角壳与其骨质芯混合物红外光谱随角骨比例变化,骨质成分越多,其红外光谱与羚羊角壳红外光谱的相关系数越低。由此推断红外光谱因取样部位、个体及物种不同而产生差异,且个体间和取样部位差异甚至大于种间差异 ...
刘闯李超金煜
doaj
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
采用基于两路检测信号相关系数的随机生成数算法,通过偏振控制器对输入偏振态进行调节,解决了双M-Z(马赫-曾德)光纤传感系统中出现的偏振相位偏移问题,改善了两路检测信号的相关性。对随机生成数算法的可行性及其3个重要参数进行了分析讨论。实验结果表明,算法执行5min可搜索到邦加球的绝大部分区域,具备全局搜索能力,并且通过合理地设置随机生成数算法的参数,可使系统在3min左右搜索到偏振态的最佳位置,使两路检测信号的相关系数保持在0.9左右,恢复两路检测信号的良好相关性。
黄微卫, 张志勇, 邵理阳
doaj
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
ABSTRACT Gamification has been increasingly implemented for language learning purposes across the globe. However, there remains unknown regarding how the change in gamification design might maximize students’ language learning outcomes and engagement.
Shen Qiao +2 more
wiley +1 more source
利用多元线性回归和偏最小二乘分析方法,研究分子表面静电势参数,VolSurf参数与双十四酰基磷脂酰基胆碱(DMPC)-水分配系数之间的定量结构-性质关系(QSPR),均得到较好的结果.分子表面静电势参数分析表明化合物分子表面上负的静电势越分散,越倾向于分配在水相中;与水分子的作用越强,越有利于分配在水相中.此外,具有较大体积和偶极密度的分子倾向于分配在弱极性相中.VolSurf参数分析表明大体积的分子易于分配在DMPC中;分子表面亲水区域较大的分子则倾向于分配在水相中 ...
HUGui-xiang(胡桂香) +5 more
doaj +1 more source
ABSTRACT This article examines the language life of young Malaysian Chinese immigrants in Australia and their construction of multi‐membership as reflected in their daily language behaviors. It develops the concept of everyday linguistic citizenship and uses this concept as a theoretical lens to understand how the young adults build, maintain, and ...
Xiaoyi Zhang +2 more
wiley +1 more source
模块化多电平换流器(modular multilevel converter,MMC)的可靠性关系到直流输电系统的安全稳定运行。文中首先基于MMC单个子模块可靠性模型的分析,利用拉丁超立方采样及Cholesky分解排序法产生计及子模块可靠性相关的场景;然后,在产生子模块相关性场景的基础上,利用极大似然估计理论得到3种Copula函数的相关系数,并利用最短欧式距离选取最优的Copula函数;其次,基于MMC子模块组合关系图及Copula理论,建立了计及子模块相关性的MMC可靠性分析模型。最后 ...
许启东 +3 more
doaj

