• 과학교육연구지
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• 제32권2호
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• pp.103-120
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• 2008

이 연구의 목적은 중 고등학교 과학교사와 학생들 사이의 중요 실험 목적에 대한 인식을 조사하고, 교사와 학생들의 인식이 서로 일치하는지를 알아보는 것이다. 연구 목적을 위해, 과학교사용과 학생용 설문지를 개발한 후 각각 중학교 교사 108명, 중학생 109명, 고등학교 교사 104명, 고등학생 110명을 대상으로 설문결과를 수집하였다. 설문 결과는 절대순위 응답분석 기법을 통해 처리되고 비교되었다. 분석 결과, 중요하게 생각하는 실험목적에 대하여 중학교 과학교사들과 고등학교 과학교사들은 과학탐구능력을 선택한 반면, 중학생들과 고등학생들은 창의적 문제해결능력을 선택하였다. 또한 응답빈도의 집중경향도 교사들은 과학탐구능력이라는 특정 항목에 집중적으로 분포한 반면, 학생들은 창의적 문제해결능력에 집중된 경향이 교사들에 비해 비교적 낮은 것으로 나타났다. 중 고등학교 교사들의 실험 목적에 대한 인식은 학생들의 인식과 달랐고, 이를 통해 교사와 학생의 실험 목적에 대한 인식에 차이가 있음을 확인하였다.

• Journal of the Korean Data and Information Science Society
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• 제17권2호
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• pp.449-453
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• 2006

In teaching statistics in the secondary school, most math teachers do it and students enjoy it well before 11th grade. But, both of teachers and students feel statistics hard at 11th grade, which has been contained permutations, combinations, random variables, probability distributions, hypotheses and tests for normal distribution. In this study, we explore the efficient teaching methods of statistics for math teachers and also find many students enjoying it.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.292-298
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• 2022

The study aimed to measure the effectiveness of using Cognitive virtual tours based on Marzano model to develop the achievement and some of historical research Skills for secondary school students. To achieve the objectives of the study, the experimental method was used and two study groups consisted of (60) students were divided into two groups, one is Control (30) students and the other is in experimental (30) students at Alsalam secondary in Ismailia Governorate. The study used several tools: The experimental processing tool of Cognitive Virtual tours based on Marzano model, Cognitive achievement test for the first unit of Secondary first grade history Course. Historical research skills. The finding of the study showed the effectiveness of using cognitive virtual tours based on Marzano model in developing the achievement and some of historical research skills for first grade secondary students which there are Statistically differences at level (0.01) between the average scores of the students in (experimental and Control) groups in post application for Cognitive achievement test. Practical application of the study can contribute to clarify how to use Cognitive virtual tours based on Marzano model in teaching history, and Draw the attention of history developers to the development of historical research skills.

• 한국도서관정보학회지
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• 제14권
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• pp.181-215
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• 1987

Reading education is very important in order to promote the refinement, cultivate the emotion and complete the character to the secondary school students. This thesis deals with the establishment of reading education as a formal course in secondary schools, responsibility of teaching and problems related to recommended reading lists. Reading education must separate from the national language education because of literature centered education in reading education. If reading education was separated from the national language education, students can a n.0, pproach to the other cultural boundary besides other own and exchange their information and ideas. So, reading education must be included to the elective subjects in a independent course or become a compulsory subject in secondary school curriculum. The teacher of reading education must become the teacher librarian who has a firm faith and an intellectual accomplishment. But, teacher-librarian has much disadvantages such as the problems of promotion, the division of qualification between elementary school and secondary school, and a short-term training courses for teacher-librarian. Hence, theses problems music be solved in national administrative level. Recommended reading lists must be provided to the student in order to prevent confusion of the sense of value, to estimate their own reading ability by themselves and to establish life long reading plan. Therefore, both Korean Library Association and the Ministry of Education should re-examine and develop recommended reading lists. Finally, problems of a juvenile delinquency in the post industrial society have to be solved through reading education. To solve the juvenile delinquency problems, adolescents should cultivate their moral character and possesses abundant knowledge through reading education. Then, young adults will grow as sound citizen in the society.

• 공학교육연구
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• 제21권3호
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• pp.38-45
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• 2018

The purpose of this study is to analyze the change of perceptions and images of teachers about engineering, according to practical training in laboratories of engineering research institutes. For this purpose, 149 elementary and secondary school teachers were surveyed before and after visiting the engineering research institutes and examined the perception of engineers and engineering. Through this teacher training program, perceptions and images of most teachers are changed positively and they can understand practically about engineering, and related fields. The results of this study can be used as basic data for the development, operation, and expansion of teacher training using advanced science and technology research institutes with excellent human and material resources.

• 한국과학교육학회지
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• 제27권8호
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• pp.755-764
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• 2007

This study examines secondary school science teachers' use of science museums in their teaching and their perception/evaluation/utilization of the educational programs in Korean science museums. We found that teachers do not use science museums in close connection with their formal education; therefore, the students' experiences usually are minimal or are personal experiences. The main reason for this infrequent use of science museums is not because of their insignificant educational effects, but because of the lack of external and administrative support systems. Science teachers want the museums to have structured/organized programs such as science camps or experiments and a lending program which would provide experimental equipment and exhibits relevant to the school science curriculum. 90% of teachers who answered the survey wanted to participate in developing and managing the educational programs of science museums. The educational programs would be used more effectively in relation to formal science learning if the science teachers, who are science education professionals, participated in managing and planning the educational programs of science museums.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권5호
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• pp.1286-1302
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• 2012

In this paper, the resource allocation problem with proportional fairness rate in cognitive OFDM-based wireless network is studied. It aims to maximize the total system throughput subject to constraints that include total transmit power for secondary users, maximum tolerable interferences of primary users, bit error rate, and proportional fairness rate among secondary users. It is a nonlinear optimization problem, for which obtaining the optimal solution is known to be NP-hard. An efficient bio-inspired suboptimal algorithm called immune clonal optimization is proposed to solve the resource allocation problem in two steps. That is, subcarriers are firstly allocated to secondary users assuming equal power assignment and then the power allocation is performed with an improved immune clonal algorithm. Suitable immune operators such as matrix encoding and adaptive mutation are designed for resource allocation problem. Simulation results show that the proposed algorithm achieves near-optimal throughput and more satisfying proportional fairness rate among secondary users with lower computational complexity.

• 한국과학교육학회지
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• 제20권2호
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• pp.244-249
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• 2000

본 연구에서는 현직 중등학교의 과학교사들을 대상으로 그들의 과학관과 학습관을 조사하였고 이 둘이 어느 정도 관련되어 있는가를 알아 보았다. 교사들은 1정 자격연수에 참여한 83명의 교사들이었는데, 평균 연령 28.7세, 평균 경력 4.0년이었으며, 근무하고 있는 지역과 학교가 다양하였다. 사용한 설문지는 권성기와 박승재(1995)가 사용하였던 '과학의 본성에 대한 인식조사지'와 '구성주의 학습관 조사지'였다. 이 조사지들은 11등급 척도로 -5에서 5까지 표시하게 되어 있었는데, 자료의 분석은 t 검증과 ANOVA를 사용하였다. 자료들을 분석한 결과 중등 과학교사들은 상대주의, 연역주의, 도구주의, 과정주의적인 과학관과 구성주의적인 학습관을 나타내었다. 그리고 그들의 과학관과 학습관 간에는 높은 관련성이 있었다.

• 한국과학교육학회지
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• 제18권3호
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• pp.443-450
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• 1998

본 연구는 중 고등학교 과학교사의 탐구수업 환경 요인에 대한 인식을 조사하였다. 조사도구는 근무 여건, 탐구수업 환경 요인, 탐구수업 장애 및 개선 요인 등의 3개 영역으로 구성되어 있다. 중 고등학교 과학교사간의 근무 여건에는 유의한 차이가 없었다. 탐구수업 환경 요인에는 '시설 및 장학지원', '업무량과 학습자료', '교사교육과 교과서', '탐구에 대한 지식과 실천', '필요성 인식과 교사의 만족도' 등 5개의 요인으로 구성되었으며, 중 고등학교 과학교사들은 '필요성 인식과 만족도'를 제외한 나머지 요인들에 대해 탐구수업을 실시하기에 부적절한 수준인 것으로 생각하였다. 탐구수업의 장애 및 개선 요인으로 중학교 과학교사들은 '다인수 학급', '교과서', '학습 자료'를 우선으로 생각하였으며, 고등학교 과학교사들은 '다인수 학급'과 '입시제도'를 우선으로 생각하였다. 중 고등학교 과학 탐구수업을 활성화시키기 위해서는 적절한 탐구 학습자료의 개발과 보급을 통해 업무량 및 심리적 부담을 감소시키고, 교사 교육의 체계적인 재조직 및 강화가 요구된다.

• Journal of Electrochemical Science and Technology
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• 제7권2호
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• pp.161-169
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• 2016

Porous tungsten oxide thin films were prepared by electrodeposition and tested as anodes of lithium secondary batteries. The synthesized films were composed of nanoparticles of 60-140 nm size, with porosities of 30-40 %. Increasing the temperature turned out to be a more effective approach to introduce porosity in the structure than increasing the electrolyte viscosity. The assessment of the synthesized films as anodes of lithium secondary batteries revealed a much higher initial discharge capacity for the porous than the dense samples. The discharge capacity retention significantly increased with increasing porosity and was further enhanced by heat treatment. In particular, a thin film composed of particles of about 140 nm in size and with a porosity of 40 % exhibited an initial discharge capacity higher than 600 mAh/g and a remaining capacity above 300 mAh/g after 30 cycles. Following heat treatment, the remaining capacity of this sample after 30 cycles increased to about 500 mA h/g.