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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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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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An Analysis of Learner Autonomy and Learning Strateg ies in CALL Environment
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作者 何为芳 《商情(科学教育家)》 2008年第4期260-261,共2页
In recent years,computer assisted language learning(CALL) increasingly attracts language learners’ attentions with evident advantages.This paper introduces the basic concepts concerning CALL,learner autonomy and lear... In recent years,computer assisted language learning(CALL) increasingly attracts language learners’ attentions with evident advantages.This paper introduces the basic concepts concerning CALL,learner autonomy and learning strategies,and tentatively proposes suggestions for developing language learners’ strategies in CALL environment based on CALL situations in China. 展开更多
关键词 CALL learner AUTONOMY LEARNING STRATEGIES
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How to Create a Low-anxiety Environment for Chinese Learners of EFL to Enhance Oral Proficiency in Speaking Lessons
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作者 顾红兵 《海外英语》 2011年第12X期161-164,共4页
The goal of teaching English speaking is to improve students' communicative efficiency, or make students speak the target language clearly, coherently, accurately and fluently (Xu, 2005). However, in China, a numb... The goal of teaching English speaking is to improve students' communicative efficiency, or make students speak the target language clearly, coherently, accurately and fluently (Xu, 2005). However, in China, a number of students in an English speaking class tend to be passive and reluctant to speak out or be singled out publicly mainly due to their high anxiety, which, of course, becomes a significant constraint on improving their English proficiency. Therefore, how to create a relaxed atmosphere with a sense of security in the English speaking class to alleviate Chinese learners' anxiety and to provide them with as many opportunities as possible to practice speaking English and improve their English proficiency is one of the central tasks for language teachers.his paper will firstly outline my teaching context in China in physical, pedagogical, institutional and personal aspects. This will be followed by the definition and classification of language learning anxiety, and the analysis of various factors contributing to foreign language learners' anxiety as well as some suggestions of how to reduce the learners' anxiety in the oral class according to the current literature. Finally, some applications will be presented in my teaching context in the hope of decreasing Chinese students' anxiety to enhance their English speaking proficiency. 展开更多
关键词 ANXIETY Chinese learnerS of EFL oral English PROFICIENCY
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