• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권2호
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• pp.500-521
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• 2021

Echocardiography, an ultrasound scan of the heart, is regarded as the primary physiological test for heart disease diagnoses. How an echocardiogram is interpreted also relies intensively on the determination of the view. Some of such views are identified as standard views because of the presentation and ease of the evaluations of the major cardiac structures of them. However, finding valid cardiac views has traditionally been time-consuming, and a laborious process because medical imaging is interpreted manually by the specialist. Therefore, this study aims to speed up the diagnosis process and reduce diagnostic error by providing an automated identification of standard cardiac views based on deep learning technology. More importantly, based on a brand-new echocardiogram dataset of the Asian race, our research considers and assesses some new neural network architectures driven by action recognition in video. Finally, the research concludes and verifies that these methods aggregating dynamic information will receive a stronger classification effect.

• 한국지구과학회지
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• 제31권5호
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• pp.500-520
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• 2010

The purposes of this case study were (1) to explore one experienced teacher's views on Earth Systems Education and (2) to describe and document the characteristics of the Earth Systems Education (ESE) curriculum provided by an exemplary middle school science teacher, Dr. J. All the essential pieces of evidence were collected from observations, interviews with the experienced teacher and his eighth grade students, informal conversations, document analysis, and field notes. The $NUD^*IST$ for MS Windows was used for an initial data reduction process and to narrow down the focus of an analysis. All transcriptions and written documents were reviewed carefully and repeatedly to find rich evidence through inductive and content analysis. The findings revealed that ESE provided a conceptual focus and theme for organizing his school curriculum. The curriculum offered opportunities for students to learn relevant local topics and to connect the classroom learning to the real world. The curriculum also played an important role in developing students' value and appreciation of Earth systems and concern for the local environment. His instructional strategies were very compatible with recommendations from a constructivist theory. His major teaching methodology and strategies were hands-on learning, authentic activities-based learning, cooperative learning, project-based learning (e.g., mini-projects), and science field trips. With respect to his views about benefits and difficulties associated with ESE, the most important benefit was that the curriculum provided authentic-based, hands-on activities and made connections between students and everyday life experiences. In addition, he believed that it was not difficult to teach using ESE. However, the lack of time devoted to field trips and a lack of suitable resource materials were obstacles to the implementation of the curriculum. Implications for science education and future research are suggested.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.208-216
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• 2022

In Saudi Arabia, female students tend to struggle with the basics of computer programming, especially coding. To better understand why female students sometimes perform poorly in this discipline, this qualitative study aims to obtain the views of female computer programming teachers at a Saudi university on using mobile learning (m-learning) methods in computer programming lectures. Ten teachers from the all-female Aljouf University were interviewed to assess their perceptions of m-learning, in particular, the usefulness of ViLLE visualisation software. Data were analysed using thematic analysis. Most interview responses about m-learning and ViLLE were positive, although there were some notable negative responses. The Saudi culture-related responses were evenly divided between positive and negative, reflecting the culture's limitations.

• 한국초등과학교육학회지:초등과학교육
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• 제30권2호
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• pp.189-203
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• 2011

The object of this study is to investigate the views of scientifically gifted children about the purpose of scientists' experiments and school science experiments. The children's views were examined using a open-ended questionnaire survey. And then the responses from the children were analyzed with categorization. The results from the study are as follows: First, the children's views about the purpose of scientists' experiments and school science experiments were classified to 2 top-level, 5 mid-level and 21 sub-level categories. Second, it was found that the children considered internal values of doing experiments are more worthy than the social and personal usefulness of the experiments. Third, the gifted children mentioned most frequently that the purposes of the scientist experiment is 'to get the evidences for their theory and argument which is unusual in the regular children's views. Also the discovery of new phenomena and materials, and the generation of new theories and ideas were mentioned as purposes of the scientist experiments. Fourth, the students frequently stated that school science experiments support effective learning of science subject enhancing subject interests and better explanation/understanding. Fifth, relatively many students thought that the purposes of school science experiments are different with those of scientist experiments. Based on the results from the study, some educational suggestions are discussed.

• 한국과학교육학회지
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• 제26권6호
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• pp.675-690
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• 2006

본 연구의 목적은 체계적이고 종합적인 과학진로교육 프로그램 및 자료를 개발하기 위한 첫 단계의 연구로, 과학 관련 진로에 대한 초, 중, 고 학생들의 생각을 조사하는 것이다. 검사도구는 두 차례의 예비조사를 거쳐 연구자가 개발하였고, 연구대상은 지역 규모에 따른 계층별 표집을 한 초등학생 1036명, 중학생 1137명, 고등학생 1435명, 총 3608명이다. 과학에 대한 이미지, 과학선호도, 과학학습선호도, 과학성적에 대한 인식, 본인의 진로 희망, 과학 직업에 대한 희망 정도, 과학 진로에 대한 인식, 과학 관련 진로 선택과 관련된 주요 요인, 과거 및 현재의 과학 관련 진로 희망 여부 및 그 이유 등을 조사하였다. 조사 결과, 학생들의 과학에 대한 이미지는 '실험활동으로서의 과학'을 가장 많이 지니고 있었고, 과학선호도와 과학학습에 대한 선호도는 과학성적에 대한 인식보다 긍정적이었다. 과학 관련 진로를 희망하는 학생들의 비율은 21%였으며, 중학생의 경우가 특히 낮게 나타났다. 과학 진로를 선택할 때의 좋은 점으로는 '나라 발전에 도움되므로', '새로운 지식을 얻을 수 있으므로', 나쁜 점에 대해서는 '위험하므로', '공부를 많이 해야 하므로' 등을 많이 들었다. 학생들이 과학 관련 진로를 선택하는 이유는 '과학 및 과학 학습에 대한 흥미'가 가장 높은 비율을 차지하는 것으로 나타났다. 이러한 분석 결과로부터 과학진로교육의 기본적 방향은 과학학습에 대한 선호도와 흥미를 높이는 것을 바탕으로 과학직업에 대한 긍정적 인식과 미래 사회에서의 과학관련 직업 전망을 제시해 줄 수 있어야 하며, 대상 학생의 발달 단계와 특성에 맞는 과학진로교육이 이루어져야 함이 더욱 중요하다.

• 한국과학교육학회지
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• 제24권1호
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• pp.90-108
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• 2004

This study is to understand preservice science teachers' previous experience, beliefs about teaching and learning, and visions of themselves as future teachers. The data were collected from two individual interviews with 7 voluntary students and analyzed qualitatively for category construction. As the results of this study, we presented two cases, which showed that their different views of teaching science are strongly related to their previous experiences as learners and observers in schools, and that there is the apparent consistency between each participant's beliefs about science teaching and learning and their own visions of teaching in a science classroom. Implications for preservice science teacher education related to the results were discussed.

• 한국초등과학교육학회지:초등과학교육
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• 제36권1호
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• pp.95-112
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• 2017

The competence of teachers, comes out through their lesson, is one of the key factors of school education. The purpose of this study is comparing the viewpoints on the science lessons in the elementary classrooms between pre-service teachers and highly experienced teachers in order to draw implications on pre-service teacher educating system. The participants of the study are 14 junior students in a university of education and 9 elementary school teachers who are highly educated and have much career experience. Each student participant observed one video clip with science lesson of their classmate. The total number of the video subject to observation is 4. Meanwhile experienced teachers observed 1 or 2 videos which are the same to those the students watched. The participants made a class criticism according to the General Standards for Class Critique made by KICE. The in-depth analysis of the criticism yielded the following conclusions; First, pre-service teachers had narrow views on the science class mainly limited in the practical part of class, but experienced teachers had wide views covered to class-knowledge, plan, and practice. Second, most experienced teachers thought that learning is the process by which students acquire knowledge or concepts by themselves, and the main purpose of the class is to help students' learning. Meanwhile, there were many pre-service teachers who thought that conveying knowledge or concepts to students was the main purpose of the class. Third, experienced teachers thought that a good science class should maintain consistency around the learning goals from the planning, implementation, and evaluation. However, many pre-service teachers did not take the learning objectives so seriously.

• 한국수학교육학회지시리즈A:수학교육
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• 제42권2호
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• pp.121-135
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• 2003

This article retrospects the developmental process of the psychology of learning and its' influence on mathematics education. At the end of the article, brain-based learning science is introduced to examine its possibility to improve the psychology of learning mathematics. Behaviorists points of views such as Skinner, Guthrie, and Gagne were summarized to discuss the influences on the learning and teaching of mathematics. Gestalt' theories and Constructivism are also included in the discussion of developmental process of learning psychology. In elaboration of the brain-based learning science, recent research findings and the possibility of it's impact on mathematics education were discussed. Since mathematics itself is the most abstract subject it could be more challenging to identify the teaming process of mathematics compared with other areas. The possibilities of identifying the teaming process of mathematics are cautiously anticipated with a help of new paradigm.

• 한국과학교육학회지
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• 제21권5호
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• pp.773-794
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• 2001

Many studies on the professional development of science teachers demonstrated that induction teachers' conceptions of teaching science are important factors in developing their professionalism. The present study was conducted to describe in detail the progress of two science induction teachers, June and Mike, towards conceptual change teaching, and to investigate secondary induction science teachers' conceptions of teaching science by analysing their conceptual ecologies. The study was interpretive, using multiple data sources to achieve a triangulation of data. Both June and Mike held strongly positive learning in their views of knowledge and science. Holding positivist views of knowledge and of science is likely to be a major obstacle for anyone coming to understand constructivism and its implications in teaching for conceptual change. This argument resonates in several key ways with the teachers' cases, even though I recognize differences between scenario and teachers, and between teachers themselves.

• 한국과학교육학회지
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• 제41권2호
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• pp.83-92
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• 2021

본 연구는 과학 탐구에 대한 초등학생들의 이해를 조사하기 위하여 초등학교 4학년 119명을 대상으로 VASI-E 검사지를 실시하고, 21명의 학생을 대상으로 응답 결과에 대한 반구조화된 면담을 실시하였다. VASI-E는 VASI를 초등학생용으로 수정한 검사지로, VASI가 포함하고 있는 8개의 과학 탐구 특성 중 5개만 포함하고 있다. 과학 탐구의 시작, 과학 탐구 방법의 다양성, 탐구 절차와 결과의 관련성, 자료와 결론도출의 일관성, 과학적 설명에 관련된 다섯 개의 측면이 VASI-E에서 다루어지고 있다. VASI-E에서 살펴보고 있는 과학 탐구의 특징에 대해 학생들의 이해는 다음과 같았다. 첫째, '과학 탐구의 시작'의 경우, 과도기적 관점을 가진 학생(53.8%)이 가장 많았다. 학생들은 과학 탐구가 과학적 질문에서 시작한다는 특징에 대해 간과하였다. 둘째, '과학 탐구 방법의 다양성'에 대해서는 초보자적 관점(54.6%)이 가장 많았다. 실험을 과학 탐구의 유일한 방법으로 알고 있거나, 실험과 관찰을 동일한 것으로 인식하고 있었다. 셋째, '질문과 탐구 절차'에 대해서는 '전문가적 관점'(47.9%)과 '초보자적 관점'(34.5%)을 가진 학생들로 양극화되었다. 과학적 질문을 생성할 수 있는지와 질문에 따른 탐구 절차의 적합성을 결정할 수 있는지 여부에 따라 수준이 나뉘었다. 넷째, '자료와 결론 도출의 일관성' 및 '자료와 선행 지식에서 기인한 과학적 설명'에 대해서는 과도기적 관점(55.5%)이 가장 많았고, 다음으로 전문가적 관점(42%)이 뒤를 이었다. 학생들은 데이터로부터 과학적 설명이 도출된다는 것을 알고는 있지만, 그 과정을 잘 설명하지 못하였다. 이러한 연구 결과를 바탕으로 초등학교 과학 탐구 지도에 대한 시사점을 제시하고자 하였다.