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基于WGAN-GP和Super Learner算法的小样本碳纳米管海水淡化性能预测
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作者 吴斌 陈鹏杰 魏明杰 《环境工程学报》 北大核心 2025年第9期2341-2350,共10页
针对小样本场景下碳纳米管(carbon nanotubes,CNTs)海水淡化性能预测中存在的数据少、预测精度低等问题,本研究提出了一种梯度惩罚Wasserstein生成对抗网络(wasserstein generative adversarial network with gradient penalty,WGAN-GP... 针对小样本场景下碳纳米管(carbon nanotubes,CNTs)海水淡化性能预测中存在的数据少、预测精度低等问题,本研究提出了一种梯度惩罚Wasserstein生成对抗网络(wasserstein generative adversarial network with gradient penalty,WGAN-GP)与超级学习器(super learner,SL)融合的预测算法框架。通过引入WGAN-GP数据增强机制,生成与原始数据分布高度一致的合成数据集,有效扩充了训练样本量。在此基础上,采用集成多种基学习器的SL算法进行海水淡化性能预测。结果表明,所提出SL算法成功实现了对CNTs水渗透率和离子截留率的高精度预测。在生成数据上,SL算法的R^(2)值在所有目标变量上均达到93%以上,其中对变量k_H_(2)O预测精度R^(2)高达95%,且均方误差MSE仅为0.04,显著优于其他传统算法。此外,孔径(σ)和亲水性系数(ε)对水渗透率和离子截留率具有显著影响。以上研究结果可为小样本场景下CNTs的设计与优化提供新思路。 展开更多
关键词 碳纳米管 海水淡化 对抗生成模型 超级学习器 小样本学习
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Large Language Model (LLM-ChatGPT) and Learner Autonomy: Teaching Present Simple Tense as a Model
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作者 Hasan Mohammed Saleh Jaashan 《Open Journal of Applied Sciences》 2025年第2期450-462,共13页
Learner autonomy stands on the top priorities of scholars due to its pivotal role in fostering student-centered learning methods. It empowers the learners to be in charge of their learning process and be the center of... Learner autonomy stands on the top priorities of scholars due to its pivotal role in fostering student-centered learning methods. It empowers the learners to be in charge of their learning process and be the center of attention in language learning education. For this purpose, different AI tools were used and implemented in pedagogy to narrow the divide in promoting learning/teaching approaches. This study aims to gauge the impact of using LLM-ChatGPT to teach EFL learners the present simple tense autonomously via providing automated feedback, and chances for regular drillings without over reliance on teacher. It also aims to investigate the EFL learners’ perception of using LLM-ChatGPT as a reinforcement approach to learner autonomy. A cohort comprising 50 EFL learners would participate in the study and a between subject design method using control and experimental groups would be implemented. The findings of the study indicated that learners who were taught present simple tense’s rule through using LLM-ChatGPT application, with less teacher’s dominance, scored grades similar to those who were taught the same tense’s rule by the teacher (sage on the stage approach). This substantiates the idea that LLM-Chat GPT acts a role akin to teachers in teaching grammatical rules. Moreover, the learners felt that LLM-ChatGPT application had a positive impact on fostering autonomous learning. 展开更多
关键词 learner Autonomy LLM-ChatGPT Sage on the Stage Approach EFL learners E-Learning Student-Centered Approach
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Research on Constructing Personalized Learner Profiles Based on Multi-Feature Fusion
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作者 Xing Pan Meixiu Lu 《Journal of Electronic Research and Application》 2025年第2期274-284,共11页
This study proposes a learner profile framework based on multi-feature fusion,aiming to enhance the precision of personalized learning recommendations by integrating learners’static attributes(e.g.,demographic data a... This study proposes a learner profile framework based on multi-feature fusion,aiming to enhance the precision of personalized learning recommendations by integrating learners’static attributes(e.g.,demographic data and historical academic performance)with dynamic behavioral patterns(e.g.,real-time interactions and evolving interests over time).The research employs Term Frequency-Inverse Document Frequency(TF-IDF)for semantic feature extraction,integrates the Analytic Hierarchy Process(AHP)for feature weighting,and introduces a time decay function inspired by Newton’s law of cooling to dynamically model changes in learners’interests.Empirical results demonstrate that this framework effectively captures the dynamic evolution of learners’behaviors and provides context-aware learning resource recommendations.The study introduces a novel paradigm for learner modeling in educational technology,combining methodological innovation with a scalable technical architecture,thereby laying a foundation for the development of adaptive learning systems. 展开更多
关键词 learner profile Multi-feature fusion Dynamic features Personalized recommendation Educational technology
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Uncovering the Association Between Musical Competence and English Prosodic Production of Chinese EFL Learners
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作者 Hui Xun Xueyao Zhang +1 位作者 Huimin Gao Xinrui Lu 《Chinese Journal of Applied Linguistics》 2025年第4期521-547,638,639,共29页
This study investigates the correlation between musical competence and English prosodic production as well as the associations among their internal components.Eighty Chinese EFL learners in college took the musical pe... This study investigates the correlation between musical competence and English prosodic production as well as the associations among their internal components.Eighty Chinese EFL learners in college took the musical perception test,musical production test and English prosodic production test in sequence.In order to take a closer look at the prosodic performance,taking native English speakers as a reference,we also conducted an in-depth acoustic analysis of the English prosody produced by six cases in both high and low musical competence groups with the aid of Praat and ToBI.Our results indicate that students with high musical competence tend to outperform those with low musical competence in English prosodic production.However,musical perception competence seems to have a greater correlation with English prosodic competence than musical production competence.In addition,beat alignment or tempo(related to time and stress)could be the most associated component in musical competence with English prosody,while melody in music was double confirmed to be unhelpful.It was also spotted that cases with high musical competence performed more native-like patterns of phrase accent,boundary tones,intonational phrases as well as placement of stress.The results have important theoretical implications for the construct interpretation of musical competence,and also suggest that rhythmic perception training could be the most effective way to transfer music achievement to English speech prosody. 展开更多
关键词 musical competence English prosodic production RHYTHM Chinese EFL learners
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Exploring Peer and Teacher Feedback Dynamics Among Chinese College EFL Learners in Writing Classes
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作者 NAO Erjilima BADE Qunzhu 《Sino-US English Teaching》 2025年第12期263-274,共12页
This article provides a comprehensive analysis of the current feedback practices in Chinese college English as a foreign language(EFL)learners’writing classes,with a particular focus on understanding why students pre... This article provides a comprehensive analysis of the current feedback practices in Chinese college English as a foreign language(EFL)learners’writing classes,with a particular focus on understanding why students predominantly prefer teacher feedback to peer feedback.It identifies three major reasons shedding light on the underlying factors that make teacher feedback more appealing compared to other types of feedback.Considering the growing influence of online teaching,this study also proposes four practical solutions to enhance the effectiveness of feedback in the context of Chinese EFL learners’writing.The suggested solutions aim to address the challenges posed by online teaching while optimizing feedback mechanisms to support learners’writing development.Additionally,the author examines the potential of adopting a pluralistic feedback approach,which integrates teacher feedback,peer feedback,and online automated evaluation system to improve the overall feedback experience in the blended teaching environment.By combining these various feedback modes,the study explores their feasibility and effectiveness in enhancing the learning outcomes of Chinese EFL learners.The pluralistic feedback model is presented as a viable alternative that can address the limitations of relying solely on one-way teacher feedback,thus promoting a more dynamic and interactive learning process for college EFL learners in China. 展开更多
关键词 college EFL learners WRITING peer feedback teacher feedback pluralistic approach
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Modeling the Influencing Factors of EFL Learners’ Online Interactive Learning: A Grounded Theory Approach
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作者 Guihua Ma 《Chinese Journal of Applied Linguistics》 2025年第3期401-424,481,共25页
Online interactive learning plays a crucial role in improving online education quality.This grounded theory study examines:(1)what key factors shape EFL learners’online interactive learning,(2)how these factors form ... Online interactive learning plays a crucial role in improving online education quality.This grounded theory study examines:(1)what key factors shape EFL learners’online interactive learning,(2)how these factors form an empirically validated model,and(3)how they interact within this model,through systematic analysis of 9,207 discussion forum posts from a Chinese University MOOC platform.Results demonstrate that learning drive,course structure,teaching competence,interaction behavior,expected outcomes,and online learning context significantly influence EFL online interactive learning.The analysis reveals two key mechanisms:expected outcomes mediate the effects of learning drive(β=0.45),course structure,teaching competence,and interaction behavior(β=0.35)on learning outcomes,while online learning context moderates these relationships(β=0.25).Specifically,learning drive provides intrinsic/extrinsic motivation,whereas course structure,teaching competence,interaction behavior,and expected outcomes collectively enhance interaction quality and sustainability.These findings,derived through rigorous grounded theory methodology involving open,axial,and selective coding of large-scale interaction data,yield three key contributions:(1)a comprehensive theoretical model of EFL online learning dynamics,(2)empirical validation of mediation/moderation mechanisms,and(3)practical strategies for designing scaffolded interaction protocols and adaptive feedback systems.The study establishes that its theoretically saturated model(achieved after analyzing 7,366 posts with 1,841 verification cases)offers educators evidence-based approaches to optimize collaborative interaction in digital EFL environments. 展开更多
关键词 online learning EFL learners interactive learning influencing factors grounded theory approach
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Beyond the Classroom Walls:Parental Attitudes,Support Systems,and the Struggle for Fluency among Turkish University EFL Learners
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作者 Dandyson Michael Jaja 《Sociology Study》 2025年第6期275-285,共11页
Language education has predominantly focused on classroom instruction and pedagogical strategies,yet the sociological aspects of learning-especially the family’s role-are often overlooked in English as a Foreign Lang... Language education has predominantly focused on classroom instruction and pedagogical strategies,yet the sociological aspects of learning-especially the family’s role-are often overlooked in English as a Foreign Language(EFL)contexts.This study explores how parental attitudes,support systems,and disciplinary approaches influence Turkish university students’oral fluency in English.While educators and curricula are frequently held accountable for low communicative competence,this paper posits that sociocultural factors originating from the home environment play a crucial role.Utilizing a qualitative-dominant mixed-methods design with 210 undergraduate EFL learners and 24 lecturers from four Turkish universities,data were gathered through questionnaires,interviews,and parental focus groups.Findings indicate that students with supportive and engaged parents exhibit greater self-efficacy,confidence,and linguistic agency in communication tasks.In contrast,those from indifferent or authoritarian families experience anxiety,low motivation,and stagnation in oral skills.Grounded in Bourdieu’s social capital theory,Bronfenbrenner’s ecological systems theory,and Coleman’s social context of learning,this study conceptualizes the family as an“invisible classroom”where linguistic habits,discipline,and cultural aspirations are cultivated.The paper concludes by proposing a Family-Engaged EFL Fluency Model(FE-EFM)that integrates learner development within a framework of sociological co-responsibility involving parents,educators,and institutions. 展开更多
关键词 parental attitudes social capital EFL fluency learner agency sociological education Turkish higher education family support
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我国传统纸媒外向型汉语学习词典语用信息编纂面临的困境与创新路径
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作者 刘伟 王东海 《辞书研究》 2026年第1期28-42,I0001,I0002,共17页
在外向型学习词典的编纂和研究中,“语用信息”研究是目前较为重要的一个课题,也是国内外辞书学界关注的热点和焦点问题。语用信息与语义信息、语法信息相对,是词条信息的重要组成部分,是语用意义在词典中直接或间接的反映。文章从学术... 在外向型学习词典的编纂和研究中,“语用信息”研究是目前较为重要的一个课题,也是国内外辞书学界关注的热点和焦点问题。语用信息与语义信息、语法信息相对,是词条信息的重要组成部分,是语用意义在词典中直接或间接的反映。文章从学术史角度梳理了学习型词典由“意义中心”到“用法中心”转向的语言学背景,探讨了“语用信息”这个概念提出的词典学背景,较为全面地总结了当前外向型英语、汉语学习词典中语用信息涵盖的类型、内容择取及呈现方式。在此基础上,指出当前我国外向型汉语学习词典在语用信息方面存在的主要问题。最后,结合融媒体背景下外向型汉语学习词典的编纂实际与当前汉语二语习得者新的辞书需求,提出要采取多种举措以提高我国汉语学习词典语用信息的编纂质量,提升其在国际词典市场上的核心竞争力。 展开更多
关键词 外向型汉语学习词典 语用信息 辞书编纂困境 创新路径
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基于随机森林的翻转混合教学效果评价与提升策略
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作者 文海家 张家兰 +2 位作者 杨海清 王桂林 谢强 《高等建筑教育》 2026年第1期181-189,共9页
探索了一种基于机器学习的混合式教学效果评价方法,利用随机森林算法,基于成绩、行为、情感等多种类型和来源的数据,构建了混合式教学评价模型,并通过特征重要性分析提出针对性的教学提升策略。以中国大学MOOC开设的国家级一流本科线上... 探索了一种基于机器学习的混合式教学效果评价方法,利用随机森林算法,基于成绩、行为、情感等多种类型和来源的数据,构建了混合式教学评价模型,并通过特征重要性分析提出针对性的教学提升策略。以中国大学MOOC开设的国家级一流本科线上课程地学景观探秘·审美·文化为例,收集了376名学生的问卷数据,进行了模型训练和验证。结果表明,优化后的随机森林模型拟合优度提高40%、残差平方均值降低7%,模型预测成绩对比学生实际成绩R2达到0.92,可有效地预测和分析学生的学习效果;学习过程参与、线上线下学习途径、手机使用、形成性评价、学习时间投入、收获感等是影响学习效果的关键因素;据此提出了针对性的混合式教学效果提升策略。研究提出的方法可为优化混合式教学设计、提高混合式教学质量、促进个性化教育提供参考。 展开更多
关键词 混合式教学 学习者行为 学习效果 随机森林 提升策略
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歧义容忍度视角下二语学习者中介语语用僵化的理论探索
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作者 刘艳春 曲颖 《忻州师范学院学报》 2026年第1期85-91,共7页
中介语语用僵化属于跨领域的复杂语言现象。本文通过文献研究和理论建构,结合僵化产生的因素和影响语用能力发展的因素,从理论层面探讨歧义容忍度在语用僵化中的效应,以期丰富该领域的研究。最终分析发现:歧义容忍度在语用僵化过程中具... 中介语语用僵化属于跨领域的复杂语言现象。本文通过文献研究和理论建构,结合僵化产生的因素和影响语用能力发展的因素,从理论层面探讨歧义容忍度在语用僵化中的效应,以期丰富该领域的研究。最终分析发现:歧义容忍度在语用僵化过程中具有间接效应。因为低歧义容忍度可导致学习者情绪状态发生变化,引起连锁反应。而高歧义容忍度则使学习者注意力难持久,易满足交际需求。因此二语学习者和教师应关注学习者的歧义容忍度水平,以缓解语用僵化带给学习者的威胁。 展开更多
关键词 歧义容忍度 二语学习者 中介语 语用僵化
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人机协作环境中外语学习者投入保障机制建设
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作者 孔蕾 杨鑫蕊 《现代外语》 北大核心 2026年第1期112-124,共13页
本研究聚焦人机协作环境中外语学习者投入的维护,从情感投入、认知投入和行为投入切入,构建了“评价-任务-监测”三维学习者投入保障机制。该机制中,评价体系改革重塑AI时代的学习目标与价值取向,促进情感投入;递进式挑战性学习任务激... 本研究聚焦人机协作环境中外语学习者投入的维护,从情感投入、认知投入和行为投入切入,构建了“评价-任务-监测”三维学习者投入保障机制。该机制中,评价体系改革重塑AI时代的学习目标与价值取向,促进情感投入;递进式挑战性学习任务激发深度认知投入;过程监测则通过结构化反思规范学习行为,促进持续的行为投入。该机制为AI时代外语学习者投入研究提供参考框架,也为人机协同的教学实践提供借鉴方案。 展开更多
关键词 人机协作 外语教学 学习者投入 保障机制
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汉语学习者语篇建构能力与学术汉语写作
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作者 崔希亮 《云南师范大学学报(对外汉语教学与研究版)》 2026年第1期32-40,共9页
研究旨在探讨语篇构建能力在学术汉语写作中的核心作用。通过对学术汉语之语篇结构的分析,并结合AI大语言模型的概括总结,文章勾勒了汉语学术论文的宏观结构;结合来华留学生学术论文的语篇分析,发现了学习者语篇构建的问题,并概括了汉... 研究旨在探讨语篇构建能力在学术汉语写作中的核心作用。通过对学术汉语之语篇结构的分析,并结合AI大语言模型的概括总结,文章勾勒了汉语学术论文的宏观结构;结合来华留学生学术论文的语篇分析,发现了学习者语篇构建的问题,并概括了汉语学术论文的微观结构。在语篇微观结构构建方面,语句上下衔接、语篇前后照应、逻辑信息连贯是重要因素。通过实证分析,发现高水平的语篇构建能力能够显著提升学术汉语的语义清晰度、逻辑连贯性和篇章整合度。最后,研究提出了提高学术汉语写作能力的具体策略,包括加强语言基础训练、增强宏观语篇构建能力、重视语篇的衔接与连贯。 展开更多
关键词 国际中文教育 第二语言学习者 学术汉语写作 语篇构建能力 宏观结构和微观结构
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联通主义视域下学习空间重构的实践逻辑与未来图景
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作者 张炳林 刘一泽 吴双 《教育研究与实验》 北大核心 2026年第2期42-50,共9页
联通主义作为数智时代的学习理论,有利于解释学习的复杂性。联通主义重新定义了知识、学习和教学,提出知识即连接、学习即交互、教学即搭建的观点;以连接、交互和搭建为核心理念重构了学习空间。基于联通主义的学习空间遵循动态、正义... 联通主义作为数智时代的学习理论,有利于解释学习的复杂性。联通主义重新定义了知识、学习和教学,提出知识即连接、学习即交互、教学即搭建的观点;以连接、交互和搭建为核心理念重构了学习空间。基于联通主义的学习空间遵循动态、正义、开放、自主的实践原则,实现学习的要素联合联络、资源共建共享、生态互联互通、人人交往交互,从而有效消减学习空间技术化导致的学习异化。联通主义视域下学习空间实现了精神与物质、个体与社会的深度融合与完美统一,描摹了以美好生活为实践起点、以人的生活为实践场域、以身心在场为实践方式、以交互网络为实践中介的未来学习空间图景,为搭建以学习者为中心的知识网络,促进数智与教育的深层次融合与创新,从而为实现人的全面发展提供有益价值。 展开更多
关键词 联通主义 学习空间 教育数字化 学习者中心
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AIGC教育应用的双重效应:基于行动者网络理论的学习者利益考辨 被引量:1
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作者 张磊 《北京理工大学学报(社会科学版)》 北大核心 2026年第1期176-186,共11页
AIGC教育应用对学习者利益的影响具有双重性质的价值生成过程。聚焦AIGC“数据—算法—技术簇”的技术变革,以行动者网络理论为技术工具追踪“问题化—利益赋予—招募—动员”转译过程,发现AIGC在赋能教育的同时,也触发了学习者认知能... AIGC教育应用对学习者利益的影响具有双重性质的价值生成过程。聚焦AIGC“数据—算法—技术簇”的技术变革,以行动者网络理论为技术工具追踪“问题化—利益赋予—招募—动员”转译过程,发现AIGC在赋能教育的同时,也触发了学习者认知能力退化、行动决策失衡和交往与道德困境等新的利益冲突。AIGC赋能的数字化生存、数字工具、数字环境共同构成了学习者利益的新生场域,需要深入剖析AIGC教育应用下的异质行动者角色,定位核心行动者与非核心行动者的典型特质和位置关系,以学习者利益为中心构置强制通行点,结合学习者“知、情、意、行”标定“知识半径扩大、交互体验升级、安全保障增强、实践情境丰富”四个增益目标,强化利益联系,从而提出“以学习者利益为中心”的招募与动员策略。为实现这一转向,应推动政府、教育界与技术方的协同治理,优化AIGC要素创新配置与提升技术能效,加强数字意识形态引导与规制技术僭越,从而构建以学习者利益为核心的AIGC教育新生态。 展开更多
关键词 行动者网络理论 学习者利益 AIGC 双重效应 考辨
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基于异构图与会话图的知识追踪
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作者 张子豪 王松 +1 位作者 苏欣怡 杨全富 《计算机应用研究》 北大核心 2026年第2期427-434,共8页
针对知识追踪任务中习题间语义关联性与知识拓扑结构建模不足,及个体学习过程动态认知演化缺乏细粒度表征的问题,提出了一种基于异构图与会话图的联合建模框架HSKT (heterogeneous graph and session graph-based knowledge tracing)。... 针对知识追踪任务中习题间语义关联性与知识拓扑结构建模不足,及个体学习过程动态认知演化缺乏细粒度表征的问题,提出了一种基于异构图与会话图的联合建模框架HSKT (heterogeneous graph and session graph-based knowledge tracing)。该方法首先构建异构图HRG (heterogeneous graph),融合学生-习题-知识点间的多语义关系,并引入答题结果、答题时长和尝试次数等细粒度行为特征,通过边属性感知的图注意力机制增强高阶语义提取与邻域信息聚合;其次,构建时序会话图SG (session graph)建模答题序列的时空依赖关系,使用时序图卷积网络(T-GCN)结合门控循环单元(GRU)捕捉知识状态的局部依赖与长期演化动态,其中会话图的边权根据答题时间间隔按艾宾浩斯遗忘曲线动态设定;最后,通过注意力机制动态融合HRG的静态语义表达与SG的动态知识表达进行预测。在ASSIST2009、ASSIST2015、ASSIST2017、EdNet和NeurIPS五个公开数据集上的实验结果表明,此方法在AUC指标上分别平均提升了2.1、1.8、4.1、2.6和1.4个百分点,为在线个性化的教学提供了更有力的支持。 展开更多
关键词 知识追踪 异构图 学习者建模 智能教育
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生态视角下英语学习能动性投入:来自学生的声音
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作者 范玉梅 徐锦芬 《现代外语》 北大核心 2026年第2期195-205,共11页
本研究基于生态视角,采用质性研究方法,考察了10名大学英语学习者对能动性投入的理解及其影响因素。研究发现,学习者视角下的能动性投入具有自主性、相互性及情感性三个核心特征。研究还进一步揭示了学习者能动性投入的多重影响因素。... 本研究基于生态视角,采用质性研究方法,考察了10名大学英语学习者对能动性投入的理解及其影响因素。研究发现,学习者视角下的能动性投入具有自主性、相互性及情感性三个核心特征。研究还进一步揭示了学习者能动性投入的多重影响因素。从生态视角来看,这些因素包括“迭代”维度下的学习经历、性格特征、英语水平及学习兴趣,“目标”维度下的英语学习目标及职业目标,以及“实践-评估”维度下的教师、同伴及课程等相关因素。本研究强调了从“主位”视角研究外语学习能动性投入的必要性,并为深入理解能动性投入提供了新的理论视角。 展开更多
关键词 能动性投入 影响因素 生态视角 大学英语学习者
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