Results 31 to 40 of about 1,350,451 (215)
Co‐Teaching in a Virtual Intensive Study Language Programme: Insights From Team Ethnography
International Journal of Applied Linguistics, EarlyView.ABSTRACT As virtual study abroad becomes an increasingly important form of international education, little is known about how transnational teaching is organised and sustained across institutions. Using activity theory as an analytical framework and team ethnography as methodology, this study examines a virtual intensive study (VIS) programme delivered
Zhu Hua +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 以广东省五华县典型崩岗洪积扇为研究对象，通过GPS RTK获取从扇顶到扇缘64个采样点的坐标、高程信息，并采集土壤样品进行理化性质的测定及分析，通过分形理论、回归分析和地统计学相结合的方法研究洪积扇土壤分形特征和空间变异规律，以及分形维数与土壤颗粒组成和养分含量的相关关系。结果表明：土壤颗粒组成和养分含量具有明显分异特征，且与分形维数的空间分布特征呈现出一定的规律性。从扇顶到扇缘，土壤粉粒、粘粒质量分数和养分含量逐渐增加，与分形维数呈显著正相关线性关系，砂粒质量分数则逐渐减少 ...
马 媛 +5 more
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines how pre‐service teachers (PSTs) in Hong Kong developed beliefs about translanguaging and how they enacted and negotiated these beliefs during teaching practicums in English‐as‐a‐second‐language (ESL) classrooms. Drawing on reflective diaries and follow‐up interviews with nine PSTs, the study found that PSTs’ beliefs were ...
Hanyun (Icey) Wu
wiley +1 more source
Shuitu Baochi Xuebao, 2003 运用分形模型对不同紫色母质发育的土壤团聚体特征进行研究,结果表明:土壤团聚体粒径分布的分形维数与土壤团聚体结构破坏率存在极显著正相关(r=0.961**,n=8),与>0.25mm水稳性团聚体含量存在极显著负相关(r=-0.958**,n=8);不同紫色母质发育的土壤团聚体粒径分布的分形维数存在差异,棕紫泥土壤团聚体粒径分布的分形维数最高,暗紫泥土壤团聚体粒径分布的分形维数最低。土壤团聚体粒径分布的分形维数是评价土壤物理肥力和土壤抗蚀性的一个新指标。
骆东奇 侯春霞 魏朝富 谢德体 朱波
doaj
Shuitu Baochi Xuebao, 2020 通过野外径流小区人工降雨试验，研究坡形和聚丙烯酰胺（PAM）对径流量、土壤侵蚀和养分流失的影响。试验设置2个PAM施用量，分别为0，2 mg/L；9种坡形处理，即4个凹形坡，4个凸形坡，1个直形坡。结果表明：（1）与均匀坡面相比，凸形坡的平均土壤流失量、氨氮流失量和磷酸盐流失量分别增加25.12%，24.01%和26.96%，且土壤和养分流失量随着凸形坡面的凸度增加而增加，凹形坡的平均土壤流失量、氨氮流失量和磷酸盐流失量分别减小13.53%，10.85%和19.95%；（2 ...
邢伟民 +4 more
doaj
Computer simulation for fractal aggregates on nonlattice substrates(无格点基底表面分形凝聚体的计算机模拟)
Zhejiang Daxue xuebao. Lixue ban, 2000 对具有周期性边界条件的无格点正方形基底表面分形凝聚体的形成进行了计算机模拟。凝聚体由二种大小不同的圆盘组成。结果表明，凝聚体的分形维数几乎与表面覆盖率成正比，其斜率随圆盘的平均直径的增大而减小。当表面覆盖率很小时，分形维数几乎与圆盘的平均直径无关，约为1.45；当表面覆盖率较大时，分形维数随圆盘的平均直径的增大而减小。
XIAA-gen(夏阿根) +3 more
doaj +1 more source
Off‐Task Talk to Manage Relationship Work During Student Group Work in Second Language Classrooms
International Journal of Applied Linguistics, EarlyView.ABSTRACT This paper presents a conversation analytic study on student relationship work in off‐task talk (OTT) during group work in foreign language classrooms. Often seen as disengagement from tasks, OTT's social and relational functions in student classroom group interaction and formation remain underexplored.
Yanyan Li
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT As digitally mediated communication increasingly shapes language learning beyond formal classrooms, social media platforms offer new possibilities for authentic, intercultural interaction. This qualitative study investigates how TikTok Live‐mediated interaction supports English as a lingua franca (ELF) use, meaning‐making, and intercultural ...
Wen‐Chi Vivian Wu +2 more
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Grounded in social cognitive theory, this study investigated how high‐evidence factors jointly contribute to Chinese‐as‐a‐foreign‐language (CFL) speaking self‐efficacy. Data from 236 CFL learners in Beijing revealed a multifaceted pattern of associations.
Peijian Paul Sun +3 more
wiley +1 more source
, 1994 现场和实验室观察表明;在断裂区内的雁型裂纹具有一个Ｒｉｅｄｅｌ几何结构。本文应用剪切裂纹位错堆积（Ｐｉｌｅ－ｕｐ）模型;描述了雁型裂纹形成的拉破坏机理;建立了雁型裂纹的分形模型来模拟Ｒｉｅｄｅｌ几何结构。根据这个模型;可以直接量测出现场和实验中出现的雁型裂纹的分形维数。在此基础上;应用分形损伤演化模型;推导出了雁型裂纹的能量耗散 ...
谢和平
core +2 more sources