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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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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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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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The Role of Learner-learner Interaction In Language Learning
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作者 武海燕 《内蒙古师范大学学报(教育科学版)》 2000年第4期89-94,共6页
This paper is committed to exploring the importance of learner learner interaction for language learning. It starts with a discussion of the roles that learner learner interaction plays in language learning from two p... This paper is committed to exploring the importance of learner learner interaction for language learning. It starts with a discussion of the roles that learner learner interaction plays in language learning from two points of view pedagogic and psycholinguistic, which is followed by a brief guideline for organizing group work in class. 展开更多
关键词 learner learner INTERACTION PAIR and group work INPUT OUTPUT
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构建适用于高职教育的“Learner-centered”教学模式研究
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作者 乔洁 李红岩 马秀芳 《劳动保障世界》 2017年第11Z期77-77,81,共2页
当前,高职计算机学科的课堂存在着师生互动性欠缺,学生自主学习意识薄弱等明显的问题。在教育教学改革新动向、在线教育蓬勃发展新趋势的背景下,为了解决高职教育教学中存在的显著问题,我们提倡并研究"Learner Centered"教学... 当前,高职计算机学科的课堂存在着师生互动性欠缺,学生自主学习意识薄弱等明显的问题。在教育教学改革新动向、在线教育蓬勃发展新趋势的背景下,为了解决高职教育教学中存在的显著问题,我们提倡并研究"Learner Centered"教学模式.通过在相关计算机课程中的具体实施和问卷分析,总结"Learner-centered"教学模式对于高职教育的优势和可行性。 展开更多
关键词 learner Centered 教学模式 高职教育
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China's English Learners' Verbal Phrase Acquisition Research Based on the Corpus——“at last”and“in the end”as an Example
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作者 张俊梅 柴晶 《海外英语》 2013年第24期262-263,287,共3页
This study is a comparative research based on corpus. This article compares China's English learners with English na?tive speakers about the use of "at last" and "in the end" from three aspects... This study is a comparative research based on corpus. This article compares China's English learners with English na?tive speakers about the use of "at last" and "in the end" from three aspects: frequency of use, location, semantic prosody. The study shows that the use of the two words are greatly different between China's English learners and English native speakers. In addition, this study discusses about causes of obvious differences and teaching enlightenments. 展开更多
关键词 at LAST in the end" China’s English learnerS
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Research on China Third Language Learners' Metalinguistic Awareness
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作者 吕新博 石运章 《海外英语》 2018年第5期18-19,共2页
This study investigated the general situation of metalinguistic awareness of third language learners in Chinese universities.Data analyses showed that the level of metalinguistic awareness in those learners was signif... This study investigated the general situation of metalinguistic awareness of third language learners in Chinese universities.Data analyses showed that the level of metalinguistic awareness in those learners was significantly higher than that of second language learners.And learning a third language can improve metalinguistic awareness. 展开更多
关键词 metalinguistic awareness third language learners second language learners
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Using An Inductive Approach to Teach Grammar to Chinese Adult Learners of English
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作者 王中锋 李爱萍 《疯狂英语(教师版)》 2007年第1期27-33,47,共8页
关键词 INDUCTIVE APPROACH deductive APPROACH GRAMMAR teaching CHINESE adult learnerS of ENGLISH
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On Second Language Learners' Lexical Competence
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作者 陈士法 彭建武 《Sino-US English Teaching》 2006年第6期5-7,共3页
The paper discusses SL learners' lexical competence from O'Connor's Five Steps of Vocabulary Acquisition Theory, Collins & Loftus's Semantic Network Theory and Fay & Cutler's Mental Lexicon Theory. From the dis... The paper discusses SL learners' lexical competence from O'Connor's Five Steps of Vocabulary Acquisition Theory, Collins & Loftus's Semantic Network Theory and Fay & Cutler's Mental Lexicon Theory. From the discussion, the author finds that second language learners' lexical competence includes the following aspects: the ability to recall the words which are similar to the target words in spelling and pronunciation; the ability to recall the synonyms of the target words; the ability to recall the antonyms of the target words; and the ability to recall the related words which come together with the target words in a context. Meanwhile it advances some strategies to develop the corresponding competence. 展开更多
关键词 vocabulary acquisition theories PSYCHOLINGUISTICS SL learners' lexical competence
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On Learner Autonomy in Foreign Language Education
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作者 方志英 刘进 《海外英语》 2013年第8X期221-223,共3页
Previous studies abroad and at home on learner autonomy have provided a variety of definitions from different perspectives as a framework of reference for the essence of LA. Therefore, based on the characteristics of ... Previous studies abroad and at home on learner autonomy have provided a variety of definitions from different perspectives as a framework of reference for the essence of LA. Therefore, based on the characteristics of LA, ways such as cultivation of LA beliefs and learning strategies, construction of a favorable LA environment and promotion of learner autonomy through teacher autonomy can be employed to foster students'autonomous learning ability. 展开更多
关键词 learner AUTONOMY (LA) TEACHER AUTONOMY FOREIGN LAN
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Review on Learner Belief about Second Language Learning
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作者 周小惠 《英语广场(学术研究)》 2013年第3期67-71,共5页
Learner belief is attracting growing attention since it is regarded as one element of individual difference which account for learners' different achievements in second language learning. This article gives a revi... Learner belief is attracting growing attention since it is regarded as one element of individual difference which account for learners' different achievements in second language learning. This article gives a review o studies of learner belief about second language learning concerning its properties, classifications, and majo approaches to investigation. Based on the review, the importance of the research in the field is emphasized. 展开更多
关键词 BELIEF second language learning learnerS
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Explicit Grammar Instruction in L2 Learners'Writing Development:Effective or Ineffective?
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作者 田秀峰 《英语广场(学术研究)》 2012年第9期65-66,共2页
It has long been in dispute about whether explicit grammar teaching is more effective in second language learning or implicit grammar teaching is.However,there are more than one factor to take into consideration while... It has long been in dispute about whether explicit grammar teaching is more effective in second language learning or implicit grammar teaching is.However,there are more than one factor to take into consideration while discussing which way is better for L2 learners.This short essay aims at depicting three respects concerning grammar teaching,namely learning context,language learners'beliefs and needs,and grammar instruction.When educators and practitioners try to adopt grammar instruction either implicitly or explicitly in L2 learners'writing development,they probably need to consider the above three factors and to find out the best way to produce more effective teaching results among their students. 展开更多
关键词 explicit grammar instruction implicit grammar instruction context learners’ beliefs and needs
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