European Journal of Mathematics and Science Education最新文献

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Impact of COVID-19 on Science Teaching: A Bibliometric Analysis COVID-19 对科学教学的影响:文献计量分析
European Journal of Mathematics and Science Education Pub Date : 2024-06-15 DOI: 10.12973/ejmse.5.2.67
Konstantinos Karampelas
{"title":"Impact of COVID-19 on Science Teaching: A Bibliometric Analysis","authors":"Konstantinos Karampelas","doi":"10.12973/ejmse.5.2.67","DOIUrl":"https://doi.org/10.12973/ejmse.5.2.67","url":null,"abstract":"This paper aims to examine the trends around research in science teaching following the outbreak of the COVID-19 pandemic. This event had a significant impact on education institutions, as it led to the shift to online learning that challenged educators in terms of planning, implementing, and dealing with issues such as the deteriorating mental and physical health of students. This is reflected in the trends of researchers. Contemporary trends around science teaching seem to focus on new teaching practices, modes, areas of investigation, and the impact of modern technology. However, there is limited bibliometric research examining the impact of COVID-19 on science teaching. Hence, 12,840 documents published from 2020 onwards were collected and analyzed from the Scopus platform. The analysis depicted a general interest of researchers around this topic. Findings regarding the focus and area of study, country, and the yearly rate of publication are aligned with those that focus on the individual impact of the COVID-19 pandemic on teaching and science education. This can give insights to the general trends regarding the future of science teaching.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141336548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Authentic Assessment for Motivating Student Learning and Teaching Effectiveness in Rural, High-Need Secondary Schools in Manitoba, Canada 加拿大马尼托巴省农村高需求中学激励学生学习和提高教学效率的真实评估
European Journal of Mathematics and Science Education Pub Date : 2024-06-15 DOI: 10.12973/ejmse.5.2.93
Eric K. Appiah-Odame
{"title":"Authentic Assessment for Motivating Student Learning and Teaching Effectiveness in Rural, High-Need Secondary Schools in Manitoba, Canada","authors":"Eric K. Appiah-Odame","doi":"10.12973/ejmse.5.2.93","DOIUrl":"https://doi.org/10.12973/ejmse.5.2.93","url":null,"abstract":"This paper derives from a large research project focusing on mathematics and science assessment of student learning in three high-need, rural, and urban secondary schools in Manitoba, Canada. The study employed qualitative methods of semi-structured interviews and classroom video recordings of teaching practice experiences of 12 mathematics and science teachers, with the purpose that explore how authentic assessment forms assist effective teaching to monitor and motivate student learning achievement and growth. The results indicate that about 67% (eight out of the twelve of the participants) of the research participants practice the traditional mode of standard assessment that consists of multiple forms of questioning. The participants' rationale relates to speedy evaluations of student work, preparing feedback reports to parents and students, and objectivity of the assessment process. The other 33% (four out of twelve of the participants) of participants practice authentic assessment that concentrates on: (1) Allowing students to apply what they have learned rather than testing their ability to memorize and regurgitate concepts, (2) Allowing students to personalize their knowledge and values, (3) Encouraging group project-based learning and with the use of rubric for evaluating and monitoring, (4) Promoting deep learning to become life-long learners, (5) Recognizing, acknowledging, and validating diversity in student learning styles, interests, and aspirations, and further, authentic assessment is an excellent opportunity to apply communicative technologies such as podcasts and webinars in learning and undertaking investigations in mathematics and science learning. Furthermore, some participants asserted that authentic assessments are time-consuming, labor-intensive, and resource-demanding, aside from the limited resources and lack of training, which are some of the challenges of implementing authentic assessment. Other participants stated that all teachers must be familiar with using all assessment tools. The paper concludes that the principal plays a critical instructional leadership role in a school-wide implementation of authentic assessment.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141336977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Can I Eat Melted-Frozen-Melted Bread?: Use of Practical Assignments to Harmonize Mathematics and STEM Courses and as a Measure for Future Technology Studies 我能吃融化-冷冻-融化的面包吗?利用实践作业协调数学和 STEM 课程,并作为未来技术研究的衡量标准
European Journal of Mathematics and Science Education Pub Date : 2024-06-15 DOI: 10.12973/ejmse.5.2.81
Tonje Jin, Kirsi Helkala
{"title":"Can I Eat Melted-Frozen-Melted Bread?: Use of Practical Assignments to Harmonize Mathematics and STEM Courses and as a Measure for Future Technology Studies","authors":"Tonje Jin, Kirsi Helkala","doi":"10.12973/ejmse.5.2.81","DOIUrl":"https://doi.org/10.12973/ejmse.5.2.81","url":null,"abstract":"In the domain of engineering education, the crucial role of mathematics, especially Calculus, cannot be overstated, as it lays the foundational groundwork for numerous sciences, technology, engineering and mathematics (STEM) courses. The integration of mathematics into STEM disciplines is achieved through the practical application of mathematical concepts in real-world scenarios or in conjunction with other STEM subjects, thereby enhancing the coherence of engineering studies and acting as a significant motivational catalyst for students. This paper presents an analytical narrative of a practical mathematics assignment, woven into the Calculus curriculum and other STEM courses from 2013 to 2018. It delves into the potential impacts of these practical assignments on student performance and attitudes by evaluating data sourced from final exam scores and anonymous course surveys, both before and after the intervention period. Through the analysis of an extensive dataset comprising 1526 final exam scores, this study endeavors to make a substantive contribution to Future Technology Studies (FTS), focusing on the strategic harmonization of mathematics and STEM courses to enrich the educational experience and foster a more cohesive and applied learning framework in these disciplines.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141337446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Qualitative Content Analysis of the Grade 4 Learning Modules and Lesson Plan on Energy based on the Three-Dimensional Learning Model 基于三维学习模式的四年级 "能源 "学习模块和教案的定性内容分析
European Journal of Mathematics and Science Education Pub Date : 2024-03-15 DOI: 10.12973/ejmse.5.1.1
Tri Lestari, Iwan Pranoto, Anita Lie
{"title":"A Qualitative Content Analysis of the Grade 4 Learning Modules and Lesson Plan on Energy based on the Three-Dimensional Learning Model","authors":"Tri Lestari, Iwan Pranoto, Anita Lie","doi":"10.12973/ejmse.5.1.1","DOIUrl":"https://doi.org/10.12973/ejmse.5.1.1","url":null,"abstract":"Online learning platforms and resources created by the Indonesian Ministry of Education, Culture, Research, and Technology were a blessing in disguise out of the unprecedented school closure caused by the Covid-19 pandemic. These learning resources are yet to be examined to ensure their usability and their role in improving the quality of learning in science classes. This study analyzed the learning modules and a sample lesson plan from the Teachers Learn Teachers Share platforms based on the three-dimensional learning framework. It examined to what extent is the 3-dimensional learning framework incorporated into the grade 4 learning modules and lesson plan on Energy. The methodology for analyzing the sufficiency of disciplinary crosscutting concepts, scientific practices, and core ideas applied here will enrich the Science, Technology, Engineering, and Mathematics (STEM) based education corpus of knowledge. Findings show that the disciplinary core ideas dimension is the most sufficiently covered of all three dimensions while the practices dimension is only partially covered as some of the points are mostly inferred, and the crosscutting concepts dimension still shows much room for improvement. Primary school teachers and schools’ curriculum development units should enrich the learning modules by expanding the discussions on the module coverage with crosscutting concepts.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding Problem-Based Learning and its Application in Learning Mathematics Concepts Among Pre-Service Teachers 了解基于问题的学习及其在职前教师数学概念学习中的应用
European Journal of Mathematics and Science Education Pub Date : 2024-03-15 DOI: 10.12973/ejmse.5.1.51
E. Boye, D. D. Agyei
{"title":"Understanding Problem-Based Learning and its Application in Learning Mathematics Concepts Among Pre-Service Teachers","authors":"E. Boye, D. D. Agyei","doi":"10.12973/ejmse.5.1.51","DOIUrl":"https://doi.org/10.12973/ejmse.5.1.51","url":null,"abstract":"Learning to teach mathematics has become crucial since its application in real life cannot go unmentioned. The desire of mathematics education researchers to make mathematics concepts easier for pre-service teachers to easily understand has attracted attention. This has become indispensable since after college, pre-service teachers are deployed from K-12 to assist learners in understanding mathematics concepts. The study aimed to ascertain how improvement in the learning of mathematics concepts using the Problem-based learning (PBL) approach could be understood and/or explained among pre-service teachers. This was viewed in two folds: how improvement in learning outcomes using the PBL approach could be explained; and how pre-service teachers’ disposition about the PBL could be explained/understood. Exploratory case study design involving qualitative and quantitative data was concurrently gathered and used. This involved the use of data collection instruments such as focus group discussion, pre-post-test scores, PBL observation protocol, and PBL disposition questionnaire. The study showed that the PBL method improved the learning of mathematics concepts among pre-service teachers. Pre-service teachers also showed a positive disposition (interest, belief, and attitude) toward the PBL intervention. The authors advocated for the conduct of a longitudinal study to understand the direction of change over time.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140391657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
YouTube Video Technology in Chemistry Classroom: Its Impact on Pre-Service Teachers’ Attitude and Academic Performance YouTube 视频技术在化学课堂中的应用:技术对职前教师态度和学业成绩的影响
European Journal of Mathematics and Science Education Pub Date : 2024-03-15 DOI: 10.12973/ejmse.5.1.39
Y. Adjei, P. Duku, Job Donkor, Solomon Boachie
{"title":"YouTube Video Technology in Chemistry Classroom: Its Impact on Pre-Service Teachers’ Attitude and Academic Performance","authors":"Y. Adjei, P. Duku, Job Donkor, Solomon Boachie","doi":"10.12973/ejmse.5.1.39","DOIUrl":"https://doi.org/10.12973/ejmse.5.1.39","url":null,"abstract":"The study investigated the impact of YouTube video assisted instructions (YVAI) on pre-service teachers’(PSTs) attitudes and academic performance in chemistry classroom. A quasi-experimental design was adopted for the study. One hundred and twenty (120) Pre-Service Teachers (PSTs) pursuing primary education programme constituted the participants of the study. Sixty (60) PSTs each were non-randomly assigned to the Experimental Group (EG) and Control Group (CG). Data on PSTs’ attitude and performance were collected with PSTAS and GCPT respectively. The SPSS software version 20 was used to analyse the data to generate descriptive and inferential statistics. A non-parametric analysis was used in the inferential statistics. The attitude means rank (MR=78.62) of EG (U = 713.000, Z=-6.924, p <.001) was statistically higher than CG (MR=42.38) (U = 713.000, Z=-6.924, p <.001) after treatment. The EG after treatment recorded a mean rank (80.86) statistically higher than CG (40.14), U = 578.500, Z = -6.441, p <.001 after treatment. YVAI was proven as an effective instructional strategy that enhances learners’ altitudinal changes and performance. The study recommended the use of YouTube technological-driven instructions to support classroom instructions.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Association Between Attitudes Towards Mathematics, Students’ Background and TIMSS Mathematics Achievement 对数学的态度、学生背景与 TIMSS 数学成绩之间的关系
European Journal of Mathematics and Science Education Pub Date : 2024-03-15 DOI: 10.12973/ejmse.5.1.13
Marie Wiberg, I. Laukaityte, Ewa Rolfsman
{"title":"The Association Between Attitudes Towards Mathematics, Students’ Background and TIMSS Mathematics Achievement","authors":"Marie Wiberg, I. Laukaityte, Ewa Rolfsman","doi":"10.12973/ejmse.5.1.13","DOIUrl":"https://doi.org/10.12973/ejmse.5.1.13","url":null,"abstract":"The overall aim of this study is to examine the association between Swedish students’ attitudes towards mathematics, mathematics achievement as measured by the Trends in Mathematics and Science Study (TIMSS), socioeconomic status (SES), and educational background variables. A further aim is to investigate whether students’ attitudes towards mathematics have a mediating role between their mathematics achievement and their background. Several indicators of students’ SES and background, taken from both the TIMSS 2015 database and from Swedish official registers, were used. The overall results show that there were differences in attitudes towards mathematics in relation to the different SES and educational background measures. There are also associations between students’ SES and both TIMSS mathematics achievement and their attitudes towards mathematics. The students’ attitudes towards mathematics only had a small mediation role between the students’ backgrounds and TIMSS mathematics achievement. Finally, although the mediation models had a better fit when including other information, the mediation effect was lower. Practical implications of the obtained results are discussed.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140241179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flipped Classroom Model: Minimizing Gaps in Understanding Mathematical Concepts for Students with Different Academic Abilities 翻转课堂模式:缩小不同学习能力学生在理解数学概念方面的差距
European Journal of Mathematics and Science Education Pub Date : 2024-03-15 DOI: 10.12973/ejmse.5.1.27
Endang Sulistyowati, Arif Rohman, Julham Hukom
{"title":"Flipped Classroom Model: Minimizing Gaps in Understanding Mathematical Concepts for Students with Different Academic Abilities","authors":"Endang Sulistyowati, Arif Rohman, Julham Hukom","doi":"10.12973/ejmse.5.1.27","DOIUrl":"https://doi.org/10.12973/ejmse.5.1.27","url":null,"abstract":"Each student has a different amount of time to fully understand information, students with high academic ability (UA) need less time than students with low academic ability (LA). Teachers should apply learning models that can facilitate their study time according to their individual needs. The aim of this research is to assess which learning model is most optimal in reducing the gap in understanding mathematical concepts between UA and LA students. Apart from that, this research also evaluates the effectiveness of implementing the flipped class (FC) model in increasing students' understanding of mathematical concepts, compared to the problem-based learning (PBL) model and conventional learning models. The research method used was the N-Gain Test and ANCOVA. The research results show that the FC model is the most optimal in reducing the gap in understanding mathematical concepts between LA and UA students. In addition, both FC and PBL models have proven effective in increasing students' understanding of mathematical concepts when compared to conventional models. Future research could consider combining the FC model with PBL or other learning models to see whether combining these models can improve students' understanding of mathematical concepts more significantly.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140238677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of the African Institute for Mathematical Science Teacher Training Program on Students’ Interest to Learn Mathematics and Science, Rwanda 非洲数学科学研究所教师培训计划对卢旺达学生数学和科学学习兴趣的影响
European Journal of Mathematics and Science Education Pub Date : 2023-12-15 DOI: 10.12973/ejmse.4.4.241
Aimable Sibomana, Josiane Mukagihana, Joseph Ndiritu
{"title":"Impact of the African Institute for Mathematical Science Teacher Training Program on Students’ Interest to Learn Mathematics and Science, Rwanda","authors":"Aimable Sibomana, Josiane Mukagihana, Joseph Ndiritu","doi":"10.12973/ejmse.4.4.241","DOIUrl":"https://doi.org/10.12973/ejmse.4.4.241","url":null,"abstract":"This study examined the impact of the Rwanda African Institute for Mathematical Science, Teacher Training Program (AIMS-TTP) on 228 secondary school students’ interest to learn Mathematics and science taught by 7058-trained teachers over 5-years across 14 districts. Students were exposed to various AIMS-TTP interventions, including industrial visits, science hours, and international day for women and girls in science, mathematics competition, robotics and mathematics challenge, and the Pan African Mathematics Olympiad (PAMO). A survey research design was employed to collect data about students’ interest to learn Mathematics and science, and data on students’ choices of combinations were obtained from the National Examination and School Inspection Authority (NESA) for the academic years 2017 to 2022. Data analysis using bivariate correlation and regression analyses revealed a positive and significant relationship (p<.05) between AIMS-TTP interventions and students’ interest to learn Mathematics and science. Besides, linear regression model indicated that hands-on activities, exposure to mathematics and science role models, science hour and smart classroom were the best predictors of students’ interest to learn mathematics and science (β=.197, p< .05; β=.217, p<.05; β=.234, p< .05; and β=.218, p<.05 respectively). They contributed 66.7 % (Adjusted, R2 = .667, p < .05) of the variance in students’ interest in learning mathematics and science. The AIMS-TTP interventions significantly improved students’ interest to learning mathematics and science. Recommendations include comprehensive training programs with direct student engagement, diverse competitions, and ongoing teacher support through professional development. Future research should focus on students’ STEM interest in Technical, Vocational Education, and Training schools.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139178290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Attitudes of Pre-Service Teachers on the Use of 3D Printing with Tinkercad in Science Education 职前教师对在科学教育中使用 Tinkercad 三维打印技术的态度
European Journal of Mathematics and Science Education Pub Date : 2023-12-15 DOI: 10.12973/ejmse.4.4.217
Hasan Güleryüz
{"title":"Attitudes of Pre-Service Teachers on the Use of 3D Printing with Tinkercad in Science Education","authors":"Hasan Güleryüz","doi":"10.12973/ejmse.4.4.217","DOIUrl":"https://doi.org/10.12973/ejmse.4.4.217","url":null,"abstract":"3D printer technology and 3D design are used in many fields and are gaining various uses day by day. It is seen that the quality of education and training has increased with the effective use of 3D technology in the education and training environment. This study aims to investigate the attitudes of Pre-Service Teachers about the use of 3D printer activities made with Tinkercad in science education. 43 science pre-service teachers participated in the study, which lasted 8 weeks. A mixed research method was used in this study. The problem-solving scale and the attitude scale towards the use of 3D printers in science education were applied to the pre-service teachers. To collect the research data, the attitude scale was applied as a pre-test and post-test. For Paired samples, a t-test was applied and analyses were performed. In qualitative studies, semi-structured student interview questions were applied. According to the findings of the study, there was a significant increase in students' positive attitudes towards the use of 3D printers in science education. Tinkercad and 3D printer trainings have been given and applications have been made within the scope of these trainings. There have been 6 activities related to 3D printers. Thanks to 3D printers, students have the opportunity to present creative ideas and things they imagine to life by making designs in their minds. It seems that abstract concepts related to the sciences are embodied with a 3D printer and turned into tangible objects. Examining a physical object makes it easier for students to identify mistakes they have made in designs. It is seen that they do creative and solution-oriented work against the problems they encounter. Thus, it is predicted that learning will be more permanent and effective.","PeriodicalId":506611,"journal":{"name":"European Journal of Mathematics and Science Education","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139178576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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