Results 21 to 30 of about 12,159 (164)
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
Jianzhu Gangjiegou Jinzhan, 2023 钢结构在现代建筑中有着广泛应用，但钢材的耐腐蚀性较差，锈蚀将降低钢构件的承载力甚至影响结构安全。对钢构件防腐涂层进行定期检测与维护是保证钢结构耐腐蚀性能的主要方法之一。为实现钢构件防腐涂层表面缺陷的自动识别，结合图像处理技术与支持向量机分类算法进行钢构件防腐涂层空鼓、裂纹、剥落3种缺陷的检测。在图像处理阶段，采用自适应中值滤波去除图像噪声，并基于Otsu阈值和改进的Canny算子对增强图像进行分割；在特征提取阶段，提取出包含简单几何特征、不变矩特征、投影特征及纹理特征的65维缺陷图像特征 ...
王亦君, 蒋首超
doaj
, 2009 通过2004年2～12月对古尔班通古特沙漠南缘2年生人工梭梭和沙拐枣混交林内3条典型坡面土壤水分进行了系统监测与研究。结果表明:人工林土壤水分状况受季节性降水、人工林种植密度、地形因子的影响而出现明显的时空分异。在空间上将土壤水分变化划分为三层,0～30cm为活跃层,30～60 cm为次活跃层,60～120 cm为相对稳定层。通过主成分分析,得出地形因子、种植密度对0～30 cm土层土壤水分的影响次序为坡度>坡向>种植密度>高程,30～60 cm土层为坡向>种植密度>坡度>高程,60～120 ...
付恒飞, 宋春武, 蒋进, 陈钧杰
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multimodal luminescent materials are crucial for advanced information encryption, real‐time dosimetry, and high‐resolution bioimaging, yet integrating orthogonal stimulus‐responsiveness into a single‐component system is challenging. Herein, we report a Pr3+‐doped Ca3Ga2Ge3O12 (CGGO: Pr3+) garnet phosphor that exhibits orthogonally addressable ...
Qi Chen +10 more
wiley +1 more source
智能科学与技术学报, 2022 当前利用社交媒体数据预测抑郁症的研究忽视语言风格和情感随时间推移变化的特征，缺乏对情感状态和帖子元数据特征的研究，基于此，提出一种基于情感信息融合注意力机制的抑郁症识别模型。首先，在现有抑郁症识别研究的基础上，使用文本分类卷积神经网络按时间顺序提取用户每个时间段的帖子信息和情感信息，引入注意力机制为得到的特征矩阵分配不同的注意力权重，进而得到用户帖子信息特征和用户情感信息特征。其次，使用正则匹配提取文本的情感倾向信息，拼接注意力机制输出分配权重后的情感特征矩阵，以增强情感学习表示。然后 ...
陈妍, 罗雪琴, 梁伟, 谢永芳
doaj
A hybridized method for remote sensing digital images matching(一种遥感数字图像匹配的合成算法)
Zhejiang Daxue xuebao. Lixue ban, 2005 分析了传统的基于灰度和基于特征的匹配算法，提出了一种基于边缘特征和相关系数的新匹配算法.该算法首先对潜在匹配图像和模板图像利用高斯拉普拉斯(LOG)算子和梯度算子提取影像的边缘，然后提取二值化图像，最后再利用相关系数法对二值化后的边缘影像进行匹配运算，得到正确的匹配结果.该算法融合了传统算法的优点.利用该算法对上海的SPOT5 m分辨率不同波段的卫星影像进行了匹配试验，获取了比较好的匹配效果.
ZHANGDeng-rong(张登荣) +2 more
doaj +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
, 2018 目的:调查留学生对高校满意度,以此提出改善高校留学生管理服务工作的可行性建议。方法:采用自编问卷的形式对厦门某高校108名留学生进行问卷调查,采用SPSS 22.0软件进行统计结果分析。结果:影响留学生满意度的因素包括管理者是否听取反馈、工作人员态度友善、教学设施齐全、宿舍管理人性化、是否提供心理咨询、留学生自身中文水平等五个维度、十二个因素。结论:应规范健全留学生管理制度;加强服务管理团队建设;构建就业服务体系;加强宿舍规范管理,促进宿舍文化交流;增加宿舍硬件设施及软性服务 ...
施晨
core
Construction of Quality Index System and Screening of Characteristic Index of Rice for Different Uses [PDF]
Taking rice as the object of study, this study systematized quality evaluation indicators, assessment methods, and their foundations, constructing a rice quality indicator system tailored to different uses.
Baiyi LU +5 more
core +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
wiley +1 more source