Results 41 to 50 of about 108,435 (188)
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
四川大学学报. 自然科学版, 2002 用模拟动力学最优化方法 ,研究了在调强放射治疗 (IMRT)中角度优化的必要性 .作者在一个模拟体模上 ,采用 9,7,5和 3束照射方式 ,从不同角度共面照射 ,然后采用模拟动力学最优化方法进行调强优化计算 .在最优化计算中 ,考虑了对紧要器官的硬约束和体积约束 .在优化完成后记录下每一组参数下的目标函数、剂量体积直方图 (DVH曲线 )、强度分布和剂量分布 .通过比较不同射束角度设置下的DVH曲线表明 :在 9束照射时 ,不需进行角度优化 ;但7,5 ,3束照射时 ...
汪俊, 吴章文, 侯氢
doaj
Shuitu Baochi Xuebao, 1994 该文给出了泥石流防治的流域自然地理环境优化效益的定义，阐述了流域自然地理环境优化的过程，并分析了流域自然地理环境优化效益与其它有关泥石流防治效益之间的关系。流域自然地理环境优化效益包括减灾效益，减洪效益和减沙效益三大部分，每种效益由若干指标构成。文章约出了流域自然地理环境优化指标体第，并对１０种优化效益指标了初步探讨。
罗鉴银 唐晓春
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Jianzhu Gangjiegou Jinzhan, 2022 提出了一个考虑内力重分布影响的高层结构减震构件单步优化法，为高层结构减震构件的优化设计提供了一个单步、高效的方法。首先，考察了内力重分布对单自由度并联体系比虚应变能的影响规律。然后提出了考虑并联关系的目标比虚应变能修正系数用以解决已有的单步优化法没有考虑超静定结构内力重分布的问题，并用算例说明优化结果的合理性。然后，作者用非减震构件的单步优化法去优化减震构件，并结合减震性能曲线提出了考虑内力重分布影响的高层结构的减震构件的单步优化法。最后通过算例对所提出的优化法进行验证 ...
陈荣 +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines how foreign language teachers’ beliefs about the medium of instruction and translanguaging evolve over time by revisiting three in‐service teachers twelve years after their initial interviews. Using a qualitative longitudinal design, the study traces how translanguaging was initially framed as pedagogically deficient but ...
Danping Wang
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智能科学与技术学报, 2021 进化集成学习结合了集成学习和进化算法两方面的优势，并在机器学习、数据挖掘和模式识别等领域被广泛应用。首先对进化集成学习算法的理论基础、组成结构及分类情况进行了概述。然后根据进化算法在集成学习中的优化任务，从样本选择、特征选择、集成模型参数组合优化、集成模型结构优化以及集成模型融合策略优化几个方面对当前进化集成学习领域的一些代表性研究成果进行了详细的综述，并分析和总结了各种进化集成学习算法的特点。最后对现有的进化集成研究的优缺点进行探讨，并给出了未来的研究方向。
胡毅 +4 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
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International Journal of Applied Linguistics, EarlyView.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
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Jianzhu Gangjiegou Jinzhan, 2011 本文采用Matlab语言编写张弦桁架结构模型程序,对张弦桁架在各荷载工况下的受力性能进行了分析;首先采用Matlab语言编写了张弦桁架结构各种约束条件程序,同时编写了基于离散变量的张弦桁架优化设计程序,采用基于离散变量的一维搜索优化算法对拟定的张弦桁架计算模型进行了优化,优化结果表明基于离散变量的一维搜索优化算法,由于目标函数和约束函数的单调性质,得到的解显然是最优解,而且优化结果可以直接应用于结构实际设计。最后,在确保编写的离散变量优化程序正确的前提下,对不同矢高的张弦桁架结构进行了离散变量优化设计 ...
刘树堂, 侯贯泽, 王林建
doaj
New Phytologist, EarlyView.Polyphenol oxidases (PPOs) depletion preserves endogenous proteins at their predicted molecular weights and enhances detectable enzymatic activities. (a) Less RbcL crosslinking in ppo mutant of Nicotiana benthamiana. Leaf extracts were incubated for 1 h, separated on protein gels, stained with Coomassie or analyzed by Western blot with the anti‐RbcL ...
Kaijie Zheng +4 more
wiley +1 more source