Results 61 to 70 of about 506,383 (198)
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
wiley +1 more source
Ba6Ti2Nb8O30和Sr6Ti2Nb8O30陶瓷的驰豫铁电性能
四川大学学报. 自然科学版, 2005 作者用固相烧结方法合成了具有充满型钨青铜结构的Ba6Ti2Nb8O30和Sr6Ti2Nb8O30陶瓷.不同频率下Ba6Ti2Nb8O30和Sr6Ti2Nb8O30陶瓷介电常数随温度的变化的规律表明,这两种陶瓷的铁电-顺电相变具有明显的驰豫铁电相变特征,相变弥散指数分别为1.95与1.41.它们在1MHz时的居里温度分别为155℃和160℃,两者的居里温度十分相近.同时,对其介电性能的电场可调性进行了初步研究.当外加电场为2kV/cm、频率为10kHz时 ...
袁媛, 陈湘明
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT Multilingual students in Anglophone universities often operate in survival mode. While translanguaging supports learning, critical gaps remain in understanding how translanguaging pedagogies transform and sustain motivation in English‐dominant contexts.
Melissa Jufenna Slamet, Julie Choi
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的筛查与脑胶质瘤发病相关基因的单核苷酸多态性,进一步寻找胶质瘤易感基因。方法收集入院脑胶质瘤病人的血液。应用PCR扩增的方法对肿瘤相关的基因的特定片段进行扩增。利用变性高效液相色谱技术进行筛查。双向DNA直接测序,在GENBANK进行对比找到突变的碱基,并进行分析。结果变性高效液相色谱筛查后表明,在HLA-DMA基因中检测到了已知杂和性突变,并发现新的突变,HLA-DMA4EC杂合性缺失突变。结论变性高效液相色谱技术在筛查基因的SNPs方面显示了其快速、高通量和准确的特点。HLA ...
徐保锋 +4 more
doaj
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
wiley +1 more source
一种平面相变存储器的制备方法，包括：在衬底上依次生长一层电热绝缘材料层和基底材料层；去除基底材料层的四边，形成图形作为制备相变材料侧墙的基底；在该电热绝缘材料层的上面和基底材料层的表面及侧面淀积相变材料层；去除基底材料层上表面的和电热绝缘材料层表面的相变材料层，形成高和宽均为纳米尺寸的相变材料侧墙；去除剩余的基底材料层，只保留纳米尺寸的相变材料侧墙；在该相变材料侧墙的一条边上搭上一条制作电极的金属层；再用薄膜淀积工艺制备一层绝缘材料层；再用化学机械抛光的方法抛光表面直至磨到将相变材料侧墙顶部的金属割断 ...
马慧莉 +5 more
core +1 more source
四川大学学报. 自然科学版, 2011 在小波变换轮廓术中,采用一维小波变换去解调变形结构条纹包含的物体面形分布时,小波处理所带来的误差分布同被测物体的面形分布及其变化率存在联系.为了减小小波变换轮廓术中相位提取的误差,从小波变换的相关实质出发,提出了利用神经网络的强大学习能力和函数逼近功能来校正相位.该方法以提取相位的一阶和二阶差分、小波尺度因子等相关计算量作为多层前馈型反向传播网络的输入,通过对复杂样本的训练,实现了输入与误差之间的非线性映射.计算机模拟和实验验证了用神经网络校正相位方法的有效性.
蒋模华, 陈文静, 郑志平
doaj
Designing Integrated Policies for the Twin Transition: Challenges and Tradeoffs
Policy Studies Journal, EarlyView.ABSTRACT Democratic governance faces the intertwined imperatives of managing the transformative risks and opportunities of digitalization, particularly stemming from artificial intelligence (AI), while achieving environmental sustainability within planetary boundaries.
Martino Maggetti
wiley +1 more source
一种平面相变存储器的制备方法，包括：在衬底上依次生长一层电热绝缘材料层，相变材料层和基底材料层；去除基底材料层的四边，形成基底；在相变材料层的上面和基底材料层的表面及侧面淀积侧墙材料层；去除基底材料层上表面的和相变材料层表面的侧墙材料层，在基底材料层的侧面将形成高和宽均为纳米尺寸的侧墙；去除基底材料层，只保留纳米尺寸的侧墙；去掉除了侧墙底部以外的所有相变材料，从而形成由侧墙和相变材料层构成的叠层侧墙；在该侧墙的一条边上搭上一条制作电极的金属层；去除侧墙以及侧墙表面上的金属层 ...
马慧莉 +5 more
core +1 more source