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An Empirical Study on the Reflective Feedback Model Based on Pedagogical Agents to Improve Students’ Problem-Solving Ability 被引量:1
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作者 Hui-Lin Zhang Jun-Jie Yan +4 位作者 Jing Liu Zhuo-Cen Zou Qun-Fang Zeng Yu-Lu Jin Jian-Nan Wu 《教育技术与创新》 2025年第1期66-75,共10页
This study constructs a reflective feedback model based on a pedagogical agent(PA)and explores its impact on students’problem-solving ability and cognitive load.A quasi-experimental design was used in the study,with ... This study constructs a reflective feedback model based on a pedagogical agent(PA)and explores its impact on students’problem-solving ability and cognitive load.A quasi-experimental design was used in the study,with 84 students from a middle school selected as the research subjects(44 in the experimental group and 40 in the control group).The experimental group used the reflective feedback model,while the control group used the factual feedback model.The results show that,compared with factual feedback,the reflective feedback model based on the pedagogical agent significantly improves students’problem-solving ability,especially at the action and thinking levels.In addition,this model effectively reduces students’cognitive load,especially in terms of internal and external load. 展开更多
关键词 pedagogical agent problem-solving ability reflective feedback
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Research on blended teaching Mode of Cultivating problem-solving ability--Take the course"Curriculum Design and Evaluation"as an example 被引量:3
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作者 Yichen Chen 《教育技术与创新》 2023年第2期24-32,共9页
Based on the literature analysis,this paper identifies the five factors of problem-solving skills:cognitive ability,knowledge,meta-cognitive ability,motivation,and emotion;teaching intervention strategies;and teaching... Based on the literature analysis,this paper identifies the five factors of problem-solving skills:cognitive ability,knowledge,meta-cognitive ability,motivation,and emotion;teaching intervention strategies;and teaching sessions that affect the development of problem-solving ability.On this basis,a blended teaching mode for cultivating problem-solving ability is designed.The article uses the problem-solving ability evaluation questionnaire to test the effect of pre-test and post-test after teaching intervention on 25 college students.The results verify that the blended teaching model designed in this paper is effective in promoting the cultivation of problem-solving ability,and provide a reference for promoting the cultivation of students'problem-solving ability in the context of the normalization of blended teaching. 展开更多
关键词 blended teaching poblem-solving skills teaching mode
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Evolution of diamond film growth modes under varied plasma conditions:insights from optical emission spectroscopy
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作者 Pengfei Qu Guangdi Zhou +2 位作者 Peng Jin Xu Han Zhanguo Wang 《Journal of Semiconductors》 2026年第1期91-97,共7页
The synthesis of high-quality heteroepitaxial diamond films on iridium composite substrates is a critical step toward advancing diamond for electronic and optical applications.Microwave plasma chemical vapor depositio... The synthesis of high-quality heteroepitaxial diamond films on iridium composite substrates is a critical step toward advancing diamond for electronic and optical applications.Microwave plasma chemical vapor deposition,combined with in situ optical emission spectroscopy,enables precise control over growth modes through plasma parameter tuning.In this study,we examine how methane concentration,microwave power,and gas pressure influence plasma species and,consequently,the growth modes of heteroepitaxial diamond by optical emission spectroscopy and scanning electron microscope.At low nucleation densities,increased methane concentrations promote the transition from faceted polyhedral to ballas structures,driven by elevated C_(2) radical concentrations in the plasma.Conversely,at higher nucleation densities,gas pressure,and substrate temperature dominate growth mode determination,leading to diverse morphologies,such as planar,polycrystalline,octahedral,and step-flow growth.These findings elucidate the interplay among plasma species,growth parameters,and growth mode,offering critical insights for optimizing growth conditions and preparing heteroepitaxial diamond films in a specific growth mode. 展开更多
关键词 HETEROEPITAXY diamond films growth modes MPCVD OES
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First systematic identification of triple-mode Auroral Kilometric Radiation using Arase polarization data
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作者 YiHua He SanGuang Li +8 位作者 HongMing Yang Sai Zhang YuYue Jin Si Liu ZhongLei Gao FuLiang Xiao ZhaoGuo He JiaWen Tang Ping Li 《Earth and Planetary Physics》 2026年第1期117-125,共9页
Auroral kilometric radiation(AKR),a fundamental plasma emission in Earth's magnetosphere,exhibits three characteristic modes:the right-handed extraordinary(R-X),left-handed ordinary(L-O)and left-handed extraordina... Auroral kilometric radiation(AKR),a fundamental plasma emission in Earth's magnetosphere,exhibits three characteristic modes:the right-handed extraordinary(R-X),left-handed ordinary(L-O)and left-handed extraordinary(L-X)modes.The role of AKR in magnetosphere−ionosphere−atmosphere coupling depends sensitively on its wave mode.While previous studies have primarily focused on the dominant R-X mode,we present the first systematic identification of all three modes using a practical polarization analysis method based on Arase satellite observations.This method employs a spin-axis-relative Ratio:when the satellite's spin axis aligns with the background magnetic field,a positive(negative)Ratio indicates the right-handed(left-handed)polarization,with reversal under anti-parallel conditions.Combined polarization-frequency analysis reveals that R-X,L-O,and L-X modes can exist in both dayside and nightside regions,with power spectral densities up to 10^(-6)mV^(2)m^(-2)Hz^(-1).This study resolves long-standing ambiguities in AKR mode classification and has implications for understanding AKR-induced electron dynamics. 展开更多
关键词 Auroral kilometric radiation wave mode POLARIZATION
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Interannual modulation of summer precipitation over North China by the coupled tropical Pacific-Atlantic SST Dipole Mode
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作者 Yanjin Mao Xiaorui Niu +3 位作者 Ping Li Xianchun Chen Libin Huang Xin Tan 《Atmospheric and Oceanic Science Letters》 2026年第1期1-6,共6页
Using multi-source reanalysis data,this study examines the relationship between the tropical Pacific-Atlantic SST Dipole Mode(TPA-DM)and summer precipitation in North China(NCSP)on the interannual timescale during the... Using multi-source reanalysis data,this study examines the relationship between the tropical Pacific-Atlantic SST Dipole Mode(TPA-DM)and summer precipitation in North China(NCSP)on the interannual timescale during the period of 1979-2022.The results show that the TPA-DM,the dominant pattern of interannual variability in the tropical Pacific and Atlantic regions,exhibits a significant negative correlation with NCSP.The positive phase of TPA-DM induces subsidence over the Maritime Continent through a zonal circulation pattern,which initiates a Pacific-Japan-like wave train along the East Asian coast.The circulation anomalies lead to moisture deficits and convergence subsidence over North China,leading to below-normal rainfall.Further analysis reveals that cooler SST in the Southern Tropical Atlantic facilitates the persistence of the TPA-DM by stimulating the anomalous Walker circulation associated with wind-evaporation-SST-convection feedback. 展开更多
关键词 Coupled tropical Pacific-Atlantic SST mode Precipitation ENSO Atmospheric teleconnection
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Predictable and Unpredictable Modes of Northern Hemisphere Atmospheric Circulation in CMIP6:Evaluation and Projections
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作者 Kairan YING Dabang JIANG Linhao ZHONG 《Advances in Atmospheric Sciences》 2026年第1期135-156,共22页
Climate models are essential for understanding past,present,and future changes in atmospheric circulation,with circulation modes providing key sources of seasonal predictability and prediction uncertainties for both g... Climate models are essential for understanding past,present,and future changes in atmospheric circulation,with circulation modes providing key sources of seasonal predictability and prediction uncertainties for both global and regional climates.This study assesses the performance of models participating in phase 6 of the Coupled Model Intercomparison Project in simulating interannual variability modes of Northern Hemisphere 500-hPa geopotential height during winter and summer,distinguishing predictable(potentially predictable on seasonal or longer timescales)and unpredictable(intraseasonal and essentially unpredictable at long range)components,using reanalysis data and a variance decomposition method.Although most models effectively capture unpredictable modes in reanalysis,their ability to reproduce dominant predictable modes-specifically the Pacific-North American pattern,Arctic Oscillation,and Western Pacific Oscillation in winter,and the East Atlantic and North Atlantic Oscillations in summer-varies notably.An optimal ensemble is identified to distinguish(a)predictable-external modes,dominated by external forcing,and(b)predictable-internal modes,associated with slow internal variability,during the historical period(1950-2014)and the SSP5-8.5 scenario(2036-2100).Under increased radiative forcing,the leading winter/summer predictable-external mode exhibits a more uniform spatial distribution,remarkably larger trend and annual variance,and enhanced height-sea surface temperature(SST)covariance under SSP5-8.5 compared to historical conditions.The dominant winter/summer predictable-internal modes also exhibit increased variance and height-SST covariance under SSP5-8.5,along with localized changes in spatial configuration.Minimal changes are observed in spatial distribution or variance for dominant winter/summer unpredictable modes under SSP5-8.5.This study,from a predictive perspective,deepens our understanding of model uncertainties and projected changes in circulations. 展开更多
关键词 interannual mode of atmospheric circulation CMIP6 predictable unpredictable EVALUATION PROJECTION
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Problem-Solving Based Intervention for Informal Caregivers: A Scoping Review 被引量:1
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作者 Quanwan Tao Jun Zhang 《Open Journal of Nursing》 2019年第9期951-971,共21页
Background: Caregiving for someone is a huge task for informal caregivers. The caregiving role is often challenging and overwhelming for them. Stress, burden, and depression have been frequently identified as the nega... Background: Caregiving for someone is a huge task for informal caregivers. The caregiving role is often challenging and overwhelming for them. Stress, burden, and depression have been frequently identified as the negative caregiving experiences. This systematic review synthesized the available evidence for the problem-based intervention provided for caregivers as there is little insight about the effects of problem-based intervention on caregivers. Objectives: To describe: 1) the design of problem-solving intervention;2) the effects of problem-solving intervention for caregiver outcomes. Methods: This review followed Arksey and O’Malley’s methodological framework for conducting scoping reviews which entail setting research questions, selecting relevant studies, charting the data and synthesizing the results. FPRISMA guidelines were adopted and several databases were searched including MEDLINE;EMBASE;web of science. This review contains literature from 2012 to 2019 on problem-solving-based intervention which intended to caregivers. Results: 41 publications representing 27 unique problem-based interventions. Problem-solving-based intervention has different extent effects on caregiver emotion status, burden and quality of life. Conclusions: Problem-solving intervention is promising in caregiver intervention which could reduce caregiver depression, anxiety and burden. 展开更多
关键词 INFORMAL CAREGIVER problem-solving Scoping REVIEW
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Impact of self-directed learning readiness and learning attitude on problem-solving ability among Chinese undergraduate nursing students
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作者 Ru-Zhen Luo Xiao-Hong Zhang +1 位作者 Chun-Mei Zhang Yan-Hui Liu 《Frontiers of Nursing》 CAS 2019年第2期143-150,共8页
Objective: To explore the effects of self-directed learning readiness and learning attitude on problem-solving ability among Chinese undergraduate nursing students. Methods: A convenience sampling of 460 undergraduate... Objective: To explore the effects of self-directed learning readiness and learning attitude on problem-solving ability among Chinese undergraduate nursing students. Methods: A convenience sampling of 460 undergraduate nursing students was surveyed in Tianjin, China. Students who participated in the study completed a questionnaire that included social demographic questionnaire, Self-directed Learning Readiness Scale, Attitude to Learning Scale, and Social Problem-Solving Inventory. Pearson’s correlation analysis was performed to test the correlations among problem-solving ability, self-directed learning readiness, and learning attitude. Hierarchical linear regression analyses were performed to explore the mediating role of learning attitude. Results: The results showed that learning attitude (r=0.338, P<0.01) and self-directed learning readiness (r=0.493, P<0.01) were positively correlated with problem-solving ability. Learning attitude played a partial intermediary role between self-directed learning readiness and problem-solving ability (F=74.227, P<0.01). Conclusions: It is concluded that nursing educators should pay attention on students’ individual differences and take proper actions to inspire students’ self-directed learning readiness and learning attitude. 展开更多
关键词 UNDERGRADUATE NURSING students self-directed LEARNING READINESS LEARNING ATTITUDE problem-solving ABILITY China
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Method and Apparatus for Creating Problem-Solving Complexes from Individual Elements
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作者 Bernhard Mitterauer 《Advances in Bioscience and Biotechnology》 2014年第4期311-315,共5页
Based on the biological key-lock-principle common in various biological systems such as the human brain, this paper relates to a method and device for creating problem-solving complexes from individual elements that c... Based on the biological key-lock-principle common in various biological systems such as the human brain, this paper relates to a method and device for creating problem-solving complexes from individual elements that can be coupled with one another and that have different properties to solve problems. The problem solution can be carried out either serially with a large computer, or with several independent, hierarchically joined computers. In this system, an independent control unit that assumes a multitude of tasks and also acts as an interface with access to all participating computers, is assigned to each problem or object class according to the amount of potential problem-oriented solutions. Such a unit prepares the partial solutions found in its computer for the totality of the solutions computed in the associated computers, finally leading to a total problem solution. 展开更多
关键词 Key-Lock-Principle GEOMETRICAL ELEMENTS Computer System Composition problem-solving
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Role of academic self-efficacy in the relationship between self-directed learning readiness and problem-solving ability among nursing students
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作者 Xiao-Hong Zhang Li-Na Meng +4 位作者 Hui-Hui Liu Ru-Zhen Luo Chun-Mei Zhang Pei-Pei Zhang Yan-Hui Liu 《Frontiers of Nursing》 CAS 2018年第1期75-81,共7页
Objective: Problem-solving should be a fundamental component of nursing education because It is a core ability for professional nurses. For more effective learning, nursing students must understand the relationship be... Objective: Problem-solving should be a fundamental component of nursing education because It is a core ability for professional nurses. For more effective learning, nursing students must understand the relationship between self-directed learning readiness and problem-solving ability. The aim of this study was to investigate the relationships among self-directed learning readiness, problemsolving ability, and academic self-efficacy among undergraduate nursing students.Methods: From November to December 2016, research was conducted among 500 nursing undergraduate students in Tianjin, China,using a self-directed learning readiness scale, an academic self-efficacy scale, a questionnaire related to problem-solving, and selfdesigned demographics. The response rate was 85.8%.Results: For Chinese nursing students, self-directed learning readiness and academic self-efficacy reached a medium-to-high level,while problem-solving abilities were at a low level. There were significant positive correlations among the students' self-directed learning readiness, academic self-efficacy, and problem-solving ability. Furthermore, academic self-efficacy demonstrated a mediating effect on the relationship between the students' self-directed learning readiness and problem-solving ability.Conclusions: To enhance students' problem-solving ability, nursing educators should pay more attention to the positive impact of self-directed learning readiness and self-efficacy in nursing students' education. 展开更多
关键词 self-directed learning readiness problem-solving ability academic self-efficacy nursing undergraduates nursing students cross-sectional survey
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Effects of Sex Differences and Problem-Solving Strategies on Digital Game Performance
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作者 Chan-Li Lin 《Journalism and Mass Communication》 2012年第9期901-910,共10页
Problem-solving strategy i,,; a critical skill in inquiry-based learning. Several studies have investigated how to use learning games to improve inquiry abilities. However, not every learner favors this kind of approa... Problem-solving strategy i,,; a critical skill in inquiry-based learning. Several studies have investigated how to use learning games to improve inquiry abilities. However, not every learner favors this kind of approach. Thus, we need to examine how human factors affect learners' reactions to the use of a digital game to support inquiry-based learning. This study addressed this issue by developing a digital game, "Baking Town", and using the game to examine the effects of two central human factors, sex differences and problem-solving strategies, on students' performance. The results demonstrate that students' inquiry abilities were significantly improved after they participated in the digital game. The results also demonstrate that the digital game may be a feasible way to reduce differences between boys and girls in this domain. Finally, we used the findings to develop a framework that can be used to enhance our understanding of sex differences and the use of problem-solving strategies in the context of digital games. 展开更多
关键词 FACEBOOK digital game sex differences problem-solving strategies
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Creative Problem-Solving and Music: Analyzing the Correlation between Music and Divergent Thinking Abilities
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作者 Aidan Kang 《Journal of Behavioral and Brain Science》 2023年第11期199-205,共7页
This research paper delves into the connection, between problem-solving and music. It’s a topic that has piqued the interest of scholars in fields, including science and neuroscience. The study explores how music can... This research paper delves into the connection, between problem-solving and music. It’s a topic that has piqued the interest of scholars in fields, including science and neuroscience. The study explores how music can influence our ability to think divergently which is an aspect of creative thinking. It builds upon advancements in methods to investigate the relationship between music and divergent thinking aiming to uncover potential correlations. Doing it offers insights into the interplay between artistic expression and cognitive innovation. This research combines an analysis of existing literature with data collected from a group of participants shedding light on how music impacts our capacity for creative thinking. It demonstrates that music plays a role as a catalyst, for stimulating and enhancing thinking abilities. 展开更多
关键词 DREAM COGNITIVE Creative problem-solving Divergent Thinking Abilities
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基于自适应阈值的MODE方法对多源卫星降水产品四川强降水个例质量的评估
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作者 孟庆怡 冯勇 +4 位作者 蒋兴文 李金建 衡志炜 袁永恒 张涛 《高原山地气象研究》 2025年第4期68-76,共9页
本文选取FY-4B、GPM-Late、MSWEP和PERSIANN-CCS四种卫星降水产品,采用自适应阈值的MODE方法对四川地区6次强降水个例进行评估。结果表明:(1)FY-4B降水强度和面积估计存在明显的高估,在大面积降水情况下,表现出对降水边缘区域的过度扩展... 本文选取FY-4B、GPM-Late、MSWEP和PERSIANN-CCS四种卫星降水产品,采用自适应阈值的MODE方法对四川地区6次强降水个例进行评估。结果表明:(1)FY-4B降水强度和面积估计存在明显的高估,在大面积降水情况下,表现出对降水边缘区域的过度扩展,整体呈现偏南的趋势;(2)GPM-Late强度和面积存在一致性低估,但质心位置表现最佳,随着实况面积的增大,质心位置偏差逐渐缩小;(3)MSWEP综合效果最佳,误差波动较为稳定,呈现系统性偏西偏南特征,强度与实况较为接近,质心位置偏差较小;(4)PERSIANN-CCS空间定位能力差,尤其在小面积降水事件中偏差较大,整体强度和面积为高估,在大范围降水中高估程度较为明显;(5)FY-4B和PERSIANN-CCS在大面积降水系统中高估,反映出红外反演方法在捕捉大范围降水系统时易出现空间范围过度扩展的问题;(6)GPM-Late降水强度偏低严重,反映出微波信号容易受复杂下垫面影响。 展开更多
关键词 卫星降水产品 自适应阈值 mode 强降水
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Circumstance Leading to Pregnancy and Problem-Solving Process of Unwanted Teenage Pregnancy in the Phetchaburi Province, Thailand
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作者 Rapeepan Narkbubpha Angsinee Kansukcharearn Brusayarat Wongwiliyavat 《Sociology Study》 2013年第12期974-984,共11页
This descriptive qualitative study aims to understand circumstance leading to pregnancy and problem-solving process of unwanted teenage pregnancy in the Phetchaburi Province. A qualitative research design was used. Pa... This descriptive qualitative study aims to understand circumstance leading to pregnancy and problem-solving process of unwanted teenage pregnancy in the Phetchaburi Province. A qualitative research design was used. Participants were 15 unwanted pregnant teenagers, aged between 15 and 19 years. All participants were primiparous and interviewed at postpartum stage. A semi-structured in-depth interview was the main technique of data collection. Data was analyzed using the process of manifest content analysis. Five themes, nine categories, 19 subcategories emerged from the data analysis. The themes were: (1) circumstance leading to pregnancy was the failure of contraceptive use and lack of knowledge about reproductive health; (2) negative emotional reactions included worry about parents' rejection and being blamed by others; (3) boyfriend's reaction to the pregnancy had a big impact on teen girl's feelings toward the situation. The majority of the teenagers' pregnancies accepted a child in the womb. The couples did not consider termination of the pregnancy; (4) parent's seeking a solution to serve the family dignity by organizing wedding ceremony and collaboratively plans for the future; and (5) life changes after the pregnancy due to the strong concerns about being blamed by the society. Findings from this study suggest that teens should particiPate in sex education classes that are specific for teenagers to prevent becoming pregnant. Moreover, the educational program specific for the teenagers' needs should be established so that they can continue their pregnancy without quitting school. 展开更多
关键词 problem-solving process manifest content analysis unwanted teenage pregnancy
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基于MODE方法的SCMOC降水产品在河西走廊干旱区的检验
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作者 李玲萍 李天江 +3 位作者 李岩瑛 伏芬琪 吴雯 陈静 《沙漠与绿洲气象》 2025年第4期138-146,共9页
利用2019—2022年5—9月国家级智能网格指导预报(SCMOC)和三源融合网格实况降水分析产品(CMPAS),采用经典检验和MODE空间检验法,检验分析SCMOC在河西走廊干旱区的表现。结果表明:(1)SCMOC对各量级降水预报TS为小雨(0.41)>中雨(0.26)&... 利用2019—2022年5—9月国家级智能网格指导预报(SCMOC)和三源融合网格实况降水分析产品(CMPAS),采用经典检验和MODE空间检验法,检验分析SCMOC在河西走廊干旱区的表现。结果表明:(1)SCMOC对各量级降水预报TS为小雨(0.41)>中雨(0.26)>大雨(0.20)>暴雨(0.05),量级越小,TS越高。(2)SCMOC对暴雨以下量级降水目标预报相似度为0.72~0.75,暴雨为0.25。(3)SCMOC对各量级降水目标轴长度和宽度都有扩大现象,小雨及中雨雨带偏向西北—东南的较偏向东北—西南的多,大雨、暴雨雨带和实况接近。(4)SCMOC对各量级降水预报面积随量级增大较实况面积越偏大(除暴雨);对小雨强度预报偏强,中雨及以上量级预报强度偏弱;各量级降水预报集中度较好,个别小雨预报较实况偏西偏南,中雨及以上量级偏西偏北。 展开更多
关键词 国家级智能网格指导预报(SCMOC) mode方法 降水 河西走廊
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