Results 71 to 80 of about 30,773 (189)
ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
wiley +1 more source
目的研究乳腺磁共振成像(Magnetic resonance imaging,MRI)弥散加权像(diffusion-weighted image,DWI)中表观弥散系数(apparent diffusion coefficient,ADC)的影响因素。方法对照病理分析32例乳腺疾病患者的42个ADC值异常的感兴趣区,分析ADC的相关影响因素。结果乳腺间质成分百分比与ADC值呈正比趋势,随间质百分比的增加ADC值增加。肿瘤组织内出血、坏死及间质成分中纤维细胞排列的疏密对ADC有明显影响 ...
赵继红 +5 more
doaj
ABSTRACT Generative artificial intelligence (GenAI) has emerged as a powerful tool in the Informal Digital Learning of English (IDLE) environment, offering personalized, interactive, and innovative language learning experiences that may enhance learning engagement.
Jin Liu, Meilu Liu, Yuan Yao, Dechao Li
wiley +1 more source
A Study on the Effect of RMB Internationalization on China’s Financial Security [PDF]
在金融全球化的推动下,我国经济实力和对外贸易规模不断壮大,人民币在全球范围内的使用量不断增大,已经成为世界第四大支付货币,随着人民币加入SDR货币篮子,其国际化的步伐已经越来越快。然而我国金融实力还很薄弱,人民币国际化必然会对金融安全产生重大影响。一方面,人民币国际化将可能增加铸币税收入,减轻外债压力,促进经济发展,推进金融市场改革及提高商业银行的“三性”,从而提升金融安全的水平。另一方面,人民币国际化也会使我国经济金融遭受冲击的可能性增加、降低货币政策的有效性以及增加商业银行的利率风险 ...
苏清锋
core
ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley +1 more source
根据遥感调查的土壤风力侵蚀数据和用主成份分析法得出的土壤风力侵蚀动力指数,对西藏自治区土壤风蚀进行宏观分析。根据中国资源环境数据库中近10年来遥感调查的土地利用时空变化数据,对西藏沙地变化进行空间分析,发现沙地总体上没有明显扩展,处于缩小的过程。沙地主要变化为人工林地,表明了人为因素对沙地的减少做出重要贡献。将地貌数据与沙地的空间分布数据进行叠加,发现西藏的沙地主要分为3种类型:湖积平原型、洪积平原型和河流谷地型。每种类型有着较为独特的沙地成因、分布格局和变化方式,成为西藏风力侵蚀的特点 ...
张国平 刘纪远 等
doaj +2 more sources
笔者应用气相色谱分析技术中的成分超标法I、EC三比值法以及平衡判据法成功地判断出一台主变压器B相内部所存在的突发性电弧放电故障。变压器停运后吊罩检查结果与气相色谱分析诊断结论相吻合,验证了气相色谱分析技术诸方法的正确性及有效性,为大型变压器的运行和异常判断提供了经验。
兰淑丽, 宋昆, 刘芳
doaj
塔里木巴楚县瓦吉里塔格地区出露有与塔里木早二叠世大火成岩省的形成密切相关的大型钒钛磁铁矿床.基于多元统计分析对该矿区露头和大量钻孔岩心样品中Fe-Ti-V元素和部分主量元素数据开展了元素地球化学相关性研究.采用SPSS软件对大量数据进行相关分析和回归分析,计算各元素间的相关系数,Fe、Ti、V 3种元素的相关性分析结果表明:矿床中Fe、Ti和V之间均呈正相关,成矿元素与造岩元素之间存在负相关关系;建立伴生钒元素与铁和钛元素之间关系的回归方程V=-4. 984 + 0. 360 Fe+0.
ZHAOYali(赵亚莉) +8 more
doaj +1 more source
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
β多样性是连接α多样性和γ多样性的重要枢纽,其格局及构建机制一直是生态学研究的热点,尤其是在海洋生态系统中对其的研究相对较少。从物种组成β多样性的角度出发,应用Mantel检验分析了瓯江口β多样性及其组分与地理距离的关系。通过基于矩阵的多元回归分析(multiple regression on distance matrices, MRM)、物种组成与环境因子之间的Mantel检验以及Shannon多样性指数与环境因子间的Spearman分析,综合探讨了构建瓯江口β多样性的主要环境因子。研究结果显示 ...
杨 玉澍 +5 more
doaj +1 more source

