Results 71 to 80 of about 847,212 (208)
四川大学学报. 自然科学版, 2008 原子间及分子间的范德瓦尔斯相互作用在分子结构和固体结构起着非常重要的作用.在本文中,我们通过基于密度泛函理论的CPMD代码研究了氮气与氧气的分子间相互作用势,所得结果与实验相符合.在本工作中,我们采用了最新且有效的范德瓦尔斯修正描述了至今还没有理论研究的氮气与氧气二聚物的分子间相互作用势.
谭嘉进, 傅敏, 常景
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT This qualitative multiple case study explores multilingual postgraduate students’ academic identities through writing at an EMI university in Hong Kong, with a focus on how they gain legitimacy in knowledge‑making with their multilingual repertoires. Grounded in a poststructuralist understanding of identities as fluid and negotiated, the study
Siqi Song, Ken Lau
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT In English Medium Instruction (EMI) contexts, students face simultaneous linguistic and academic demands. Although psychological capital (PsyCap) has been recognized as an important psychological resource for academic success, less is known about whether its effects depend on students’ academic English literacy (AEL).
Hao Wu, Heath Rose
wiley +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
, 1999 基因靶位操作（ｇｅｎｅｔａｒｇｅｔｉｎｇ）是８０年代发展起来的一项重要分子生物学技术，是通过外源ＤＮＡ与染色体ＤＮＡ间的同源重组，定点修饰、改造基因组特定位点的技术。１同源重组同源重组是基因靶位操作技术的分子生物学基础。ＤＮＡ同源重组在基因转化和遗传..
汪亚平,朱作言
core
International Journal of Applied Linguistics, EarlyView.ABSTRACT Understanding learners’ English speaking self‐efficacy is essential for promoting effective oral communication in EFL contexts. However, variable‐centered research on English speaking self‐efficacy often overlooks heterogeneity among learners.
Cha Li, Lawrence Jun Zhang
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
Impact of intercropping of rice cultivars on methane emissions(水稻品种间作对甲烷排放的影响)
浙江大学学报. 农业与生命科学版Diversified farming of crop cultivars is an effective measure for improving agroecosystem functions. However, there is still a lack of research on the effects of mixed planting of different cultivars on greenhouse gas (GHG) emissions. In this study, rice
NA Haowei(那好为) +5 more
doaj +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Self‐directed Learning (SDL) is an important skill for learners of all ages and phases of life. Generative AI facilitates self‐directed second language (L2) learning by providing interactive, personalised access to online resources. However, existing research on AI‐assisted self‐directed L2 learning focuses on adult learners in higher ...
Qing Ma +4 more
wiley +1 more source
, 2017 在分析大时延环境下遥操作特点的基础上，从使用可靠性角度提出一种可靠遥操作的多层策略集。将各可靠遥操作策略分解在数据层、算法层、操作层、策略层以及系统层并分别展开说明，涵盖了大时延环境下的数据交互、空间机器人关节指令序列的嵌套位置／速度规划、操作员与遥操作系统交互、遥操作任务运行流程与应急和遥操作系统监测／在线维护等方面的策略。此外，对可靠遥操作中尚待解决的动作反演、操作引导和共享遥操作技术进行了分析和展望。开展了某不确定大时延环境下的空间机器人遥操作试验 ...
张珩, 马欢, 肖歆昕, 李文皓
core +2 more sources