• 한국엔터테인먼트산업학회논문지
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• 제15권8호
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• pp.279-290
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• 2021

코로나19로 대학 학사운영이 원활하게 이루어지지 못하고 대부분 비대면 수업으로 진행되자, 학생들의 학업중단은 꾸준히 증가하고 있는 추세이다. 이 연구에서는 코로나19 비대면 수업환경에 대한 물리학과 대학생들의 인식과 교수들의 인식, 코로나19 비대면 수업환경이 학생들의 학업중단에 미치는 영향을 포커스 그룹 인터뷰를 실시하여 분석하고 그 결과를 바탕으로 코로나 19 비대면 수업이 물리교육에 주는 시사점을 제시하였다. 물리학과 학생들은 코로나19로 인한 비대면 수업에 대해 '몸은 편한데 마음은 불편한 비대면 수업', '나보다 똑똑한 사람이 책 읽어주면서 설명하는 느낌', '짧은 동영상 강의, 편하지만 손해라는 기분'이라고 하였으며, 교수들 역시 '완전 180도 바뀐 수업체계', '부담감이 많은 온라인 수업'이라고 하였다. 학업중단에 대해서 학생들은 비대면 수업환경으로 학업중단에 대한 고민이 더욱 심화되어 전과에 대한 고민이 증가되었다고 하였다. 교수들은 비대면수업과 학업중단 증가로 활력이 사라는 학과분위기가 되었다고 하였다. 코로나19 비대면 수업상황이 물리교육에 시사하는 바로 교수와 학생간 상호작용을 강화하는 방안 모색과 실습수업을 보완할 수 있는 실재감을 높이는 수업방안 모색, 그리고 물리학 교수들의 교과교육학 지식을 공유할 수 있는 기회 부여가 필요함을 제시하였다.

• 한국초등과학교육학회지:초등과학교육
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• 제41권2호
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• pp.338-355
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• 2022

본 연구는 과학 수업 딜레마 사례에 관한 초등 예비교사의 탐구 활동이 교사교육에서 어떠한 효용성을 가지는지 탐색하는 것을 목표로 한다. 구체적으로 딜레마 사례에 관한 초등 예비교사의 탐구 과정의 특징은 무엇이며 탐구를 통해 그들의 교육적 의사결정이 어떻게 변화하는지 자세히 살펴봄으로써 딜레마 사례 활용 교사교육의 효과에 대한 시사점을 얻고자 하였다. 교육대학교 4학년에 재학 중인 초등 예비교사 20명이 참여하였으며 모둠별 프로젝트 학습 형태로 과학 수업 딜레마 사례에 관한 탐구 활동을 7주간 수행하였다. 연구자는 사전·사후 설문지, 모둠별 KWHL 표, 모둠별 탐구보고서, 모둠별 발표 자료 및 모둠별 토론 내용을 데이터로 수집하고 분석하여 예비교사의 탐구 과정의 특징과 의사결정 변화에 영향을 주는 주요 요인을 추출하였다. 예비교사들은 딜레마 사례에서 다루고 있는 과학 주제를 탐구하면서 자신의 과학 학습 과정, 탐구 과정을 의미 있는 것으로 인식하였고 자신이 탐구를 통해 과학을 학습한 것처럼 초등학생도 유의미한 과학 탐구 활동을 할 수 있을 것으로 유추하였다. 또 예비교사들은 수업 주제와 관련하여 실제 초등학생의 사고 과정이나 배경 지식 등을 다양한 방법으로 탐구하였다. 지도서와 교육과정 등의 문서를 조사하고 현장교사나 초등학생과 면담을 통해 '실제' 학생의 사고 과정이나 수준을 파악하고자 했고 이를 교육적 의사결정에 반영하였다. 또한, 딜레마 상황의 해결 방안을 한 가지 대안으로 귀결하지 않고 여러 가지 교수 방법을 비교하며 상황에 따라 다양한 대안이 가능함을 인식하기도 하였다. 이처럼 딜레마 사례는 비구조화된 문제로서 예비교사에게 일종의 문제해결 상황을 제공하였고 예비교사의 과학적 탐구, 학생의 사고에 관한 탐구를 촉발하였으며 예비교사가 교수-학습의 복잡성을 인식하는 데 일조하였다. 이러한 연구 결과를 바탕으로 딜레마 사례 활용 교사교육과 관련된 시사점을 논의하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제44권1호
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• pp.15-40
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• 2005

This study basically investigates the meaning and properties of performance task applicable to mathematics classroom and it finds out how to run effectively performance task activities included in the present mathematics textbooks. To accomplish this, this study deals with twelves kinds of mathematics textbooks for ninth graders and is proceeded on the basis of textbook analysis and teacher interview. Considering a situation that in future mathematics textbook would be developed, according to the analytic results of this study, common understanding of performance task and qualified performance task are needed, a variety of tasks classified by differentiated level are needed. In addition, each task should be dealt with the contents related to curious and interesting real-life situations. Furthermore, fairness of checking and recording should be established and teachers' positive attitudes to applying performance tasks to math class are needed.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.123-125
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• 2005

Many researchers conducted the effort for improving the classification accuracy of satellite image. Most of the study has used optical spectrum information of each pixel for image classification. By applying this method for high resolution satellite image, number of class becomes increase. This situation is remarkable for house, because the roof of house has variety of many colors. Even if the classification is carried out for many classes, roof color information of each house is not necessary. Most of the case, we need the information that object is house or not. In this study, we propose the method for detecting the object by using Genetic Algorithms (GA). Aircraft was selected as object. It is easy for this object to detect in the airport. An aircraft was taken as a template. Object image was taken from QuickBird. Target image includes an aircraft and Haneda Airport. Chromosome has four or five parameters which are composed of number of template, position (x,y), rotation angle, rate of enlarge. Good results were obtained in the experiment.

• Journal of Astronomy and Space Sciences
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• 제31권2호
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• pp.101-120
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• 2014

The nature of the exotic stellar corpses which reincarnate by consuming their companion is reviewed. Apart from sucking life from their partners, they are actually eating the doomed companions away by their deadly and powerful particle/radiation beams. Such situation resembles that a female "black widow" spider that eats its mate after mating. These celestial zombies are called - Millisecond pulsars (MSPs). In this review article, I will focus on the effort of Fermi Asian Network (FAN) in exploring these intricating objects over the last five years. Two special classes of MSPs are particularly striking. Since Fermi Gamma-ray Space Telescope has started surveying the gamma-ray sky, the population of "black widows" has been boosted. Another dramatic class is so-called "redbacks" (Australian cousin of "black widows") which has just emerged in the last few years. These MSPs provide us with a long-sought missing link in understanding the transition between accretion-powered and rotation-powered systems. The strategy of hunting MSPs through mulitwavelength observations of the unidentified Fermi objects is also reviewed.

• 한국유통학회지:유통연구
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• 제2권1호
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• pp.215-230
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• 1997

Today, The biggest problem in the structure of high cost and low efficient economic situation in Korea is found due to problem of cost circulation field, so the government officials and enterprises trying to solve it. In fact, The high cost, low efficient structure is not good to poor circulation of goods among businesses, especially in Dae-gus local industries. also, we face there is a shortage of indirect social capital which caused by a lack of connectoin among businesses in the circulation field. Recently, in order to solve the problem of circulation, it is above all necessary that government and local authorities pay attention to it and effort of positive and drastical investment. As the economy of Dae-gu would be activiate and local firms competion should be strengthen, it is request that the policy for efficiency in the circulation of goods need to effort as follows; 1. The highest class of local firms try to convert of knowledge in order to reduce the cost of goods. 2. To efficient of firms goods, it is essential that standardize the goods and spread for automation, so in the long run, There will be thrust forward establishment of total goods information network.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2004년도 가을 학술발표회 논문집
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• pp.270-277
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• 2004

In this paper, path-independent values of the J-integral in the fininte element context for arbitrary two-dimensional and three-dimensional crack configurations in welds are presented. For the fracture mechanics analysis of cracks in welds, residual stress analysis and fracture analysis must be performed simultaneously. In the analysis of cracked bodies containing residual stress, the usual domain integral formulation results in path-dependent values of the J-integral. This paper discusses modifications of the conventional J-integral that yield path independence in the presence of residual stress generated by welding. The residual stress problem is treated as an initial strain problem and the J-integral modified for this class of problem is used. And a finite element program which can evaluate the J-integral for cracks in two-dimensional and three-dimensional residual stress bearing bodies is developed using the modified J-integral definition. The situation when residual stress only is present is examed as is the case when mechanical stresses are applied in conjunction with a residual stress field.

• Journal of information and communication convergence engineering
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• 제8권3호
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• pp.343-347
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• 2010

Cyber education has been predicted that it would become the primary education system of 21st century as a way of education focusing on consumers, with the aspect that it seems to be able to satisfy the demand about re-education and lifelong education as the acceleration of fast knowledge accumulation throughout every field of society in the digital era. However, cyber education system has a lot of problems which are for that it lacks of human resources for effective interaction, and it can be disadvantageous to certain type of students with a class environment concentrated on reading and writing and with foundation on computer technology. Therefore, in this thesis, We intended to analyze factors influencing satisfaction of people studying in a situation that cyber education has been required to be a mainstream system of education in the midst of trend of changing paradigm of college education recently, and to suggest some possible solutions for cyber education at university.

• 대한인간공학회지
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• 제14권2호
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• pp.15-24
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• 1995

The purpose of this study is to provide ergonomic research data for the redesign of the car license plate in Korea. Several alternatives having various combinations of fonts, stroke-width ratios, color contrasts, and arrays were considered in order to find the best one in terms of the reading-distance and the misreading-rate. Experiments investigating the reading-distance, misreading-rates were conducted. In addition, the alternatives were tested in a real driving situation. The results can be summarized as follows : The typography having mixed type numeric forms with quasi-Gothic and NAMEL, stroke-width ratio of 1:7 .approx. 1: 8, the black on yellow contrast showed a good reading-distance. The array with Hangul(showing territorial office and use-sign) at the upper row and 6 mumbers ( showing car class-sign and serial number) at the lower row showed relatively low misreading-rate.

• International Journal of Railway
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• 제5권1호
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• pp.48-54
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• 2012

The main purpose of this study is to highlight the importance and validity of introduction of stress-concerned aptitude items for the safety critical workers, corresponding to the radical environmental change in railway industry. To attain this purpose, the author performed a brief literature survey, and scrutinized the western practice in detail. Then, the necessity of introduction of stress-related aptitude items was suggested, based on the statistics resulted from a survey which has been once performed for experts and drivers. The final conclusion is that the present selection system through which the safety critical workers are being staffed, without any rigorous screening mechanisms cannot but have some limitations. So, an overall restructuring for aptitude management system needs to be done in order for us to advance to the position of upper-class railway country.