Results 121 to 130 of about 1,549,788 (235)
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
Gaoya dianqi, 2002 在分析高压SF6 断路器开断大电流时 ,电弧对喷口烧蚀机理的基础上 ,进行了喷口材料改性试验研究。得出聚四氟乙烯中加入MoS2 ,BN ,光致蓄光材料 （PL） ,复合聚四氟乙烯的介电性能、光学性能、耐电弧烧蚀性能和线膨胀系数的变化规律。研究结果为提高喷口的耐电弧烧蚀性能、改善喷口材料的介电性能和工艺性提供了理论依据。
李仰平 +4 more
doaj
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
Jianzhu Gangjiegou Jinzhan, 2006 杭州国际会议中心总建筑面积117350m2。建筑功能复杂,包含高大空间共享中庭、大空间会议厅、标准客房、以及娱乐空间,建筑结构选型独特。对于这种综合性功能建筑国内现有的规范方法难以满足结构抗火安全性与经济性要求。本文基于性能化对杭州国际会议中心主体结构的抗火安全性进行了评估,首先确定结构抗火性能目标,然后对结构构件在可能最不利火灾场景下的力学性能进行分析,最后根据结构的受火性能是否满足抗火性能目标来评估结构的抗火安全性及需要采取的防火保护措施。本文结果被业主和消防主管部门采纳 ...
李国强, 杜咏, 王银志, 蒋首超
doaj
Floral bilateral symmetry: one axis, many details
New Phytologist, EarlyView.Dorsal petal morphological diversity among monkeyflower species. Summary Symmetry is a major component of floral diversity. Most flowers are radially or bilaterally symmetric, with bilateral symmetry (monosymmetry) having evolved repeatedly from radial ancestors. Since the identification of the dorsal identity gene CYCLOIDEA (CYC) in snapdragon, floral
Ya Min
wiley +1 more source
[Development and performance testing of a high-sensitivity pulsed flame photometric detector]. [PDF]
Se PuChen JB +4 more
europepmc +1 more source
, 2017 苯并恶嗪树脂因其优异的综合性能被广泛用于涂料、电子、航空等领域,是一类非常重要的高性能热固性材料。然而其同样也存在一些缺点,如:原料来源多为石化资源,固化产物质脆及韧性差等。本文以生物基来源的丁香酚与糠胺为主要原料设计合成了一系列含硅柔性苯并恶嗪树脂,并对树脂及其固化产物的各种性能进行了详细研究。研究结果表明,树脂在室温下具有较低的粘度,范围从28.9到727Pa.s;固化产物表现出优异的热力学性能:断裂伸长率最高可达8.1%,初始分解温度与储能模量分别高达408°C和2100Mpa ...
代金月 +5 more
core
Accountability in Government Use of AI: Citizen Concerns and Preferences
Public Administration, EarlyView.ABSTRACT Government adoption of AI opens the “pandora's box” of accountability, a core aspect of public value. Despite the centrality of governmental AI accountability, citizens' concerns and preferences in holding governments accountable for AI usage remain poorly understood.
Naikang Feng, Yanto Chandra
wiley +1 more source
[Study on the effect of superficial layer damage on cartilage retention performance]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHan Z +5 more
europepmc +1 more source