• 수산해양기술연구
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• 제28권1호
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• pp.10-20
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• 1992

The new course distances of a ship are considered to be the indices to indicate directly her abilities of course altercation. Generally, they have long been calculated by using the maneuvering indices obtained from her Z test. However, at sea actually the maneuvering indices can not sometimes be obtained according to ship's condition or circumstances and the new course distances can not be calculated. To find out other method to calculate the new course distances, in this paper the author analyzed them from a viewpoint of ship motion, and worked out a numerical formula to calculate them easily, using the data of ship's heading test. In order to check whether the presented method is applicable to actual ships or not, the experiment by them were also performed. The results obtained are summarized as follow: 1. The mean difference of the distance between two new course distances by the heading test and the maneuvering indices of the experimental ship was about 0.98% values of the ones by the maneuvering indices, when her heading were 10。, 20。 and 30。, using the rudder angle of 15。. These new course distances were therefore found to be almost same in values of the distance. 2. The mean difference of the distance between two new course distances by the heading test and the observation of experimental ship was about 1.16% values of the ones by the observation, when her headings were 10。, 20。 and 30。, using the rudder angle of 15。. These new course distances were therefore found to be almost same in values of the distance. 3. It is confirmed that the new course distances can be calculated easily by using the method of ship's simple heading test, without the observation or using the maneuvering indices. 4. It is considered to be helpful for the safety of shiphanding to draw curves of new course distances by ship's heading test and utilize them at sea.

• 한국항해학회지
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• 제10권2호
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• pp.97-114
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• 1986

Ship's maneuverability is very important factor in safe ship handling and economical ship operation. Steering characteristics are consisted of course stability and maneuverability. Today in many advanced ship-building countries, they study ship's course stability, using model ship tests, such as straight line tests, rotating arm tests and Planar Motion Mechanism (PMM) etc., in tow in tanks. It is the purpose of this paper to provide ship's handlers with better understanding of steering characteristics and to help them in safe controlling and manevering . In this paper, the author simulated response of various vessels, running straight course with constant speed, and they are disturbed by small external disturbance of one degree yaw angle with no angular velocity . The author used the hydrodynamic derivtives resulted at tests of Davidson's laboratory in Stevens Institute of Technology, New Jersey, U.S.A. Course stability was evaluated and analyzed in various respects, such as block coefficient, ratio of ship's length to beam, draft and rudder area ratio etc. The obtained results are as follows : (1) The ship's course stability is affected by magnitude of block coefficient greatly. In case that the block coefficient is more than 0.7, the deviation varies at nearly same rate but the requistite time to reach the steady course is different. (2) The ship's course stability is affected by magnitude of L/B. When the dimensionless time reaches about 3, the deviation and requisite time to reach the steady course are influenced nearly same. After the dimensionless time is about 3, they change on invariable ratio. (3) The effect to course stability by L/T and RA' can be neglected. (4) The reason why thy VLCC and container feeder vessel are unstable on their course is that their block coefficient is generally more than 0.8 and the ratio of ship's length to beam is about 6.0.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제23권4호
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• pp.235-254
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• 2020

Through this study, we aimed to capture the nature of a mathematics method course, called "the Curriculum Development and Teaching Methods in Mathematics Education" which is a pedagogy course for teaching for secondary school mathematics taught at a university located in a south eastern part of South Korea. The research participants include three junior students who took the methods course and a local high school math teacher with two professors. The research has three parts. First, we designed a method course to prepare the junior or senior students for a teaching practicum. The individual students gave a mini lecture about a secondary mathematical topic as a course requirement. Second, the three students watched a classroom video-clip of the high school teacher and analyzed his instruction before the actual classroom visits. Furthermore, by "Let's Learn" program for students, the course was associated with a local community through the students and so that they could visit the teacher's classroom three times to observe his math classroom teaching. The students discussed the difference between their own mini lectures and the actual math classroom teaching to develop an understanding of what it entails to teach an actual math class. Third, the first author supervised the students' activities in the program including their report for it to bring out their findings to the class of the method course. We found out this method course provided the students with the experience of various aspects of actual math lesson as well as learning theories about the pedagogy for teaching for secondary school mathematics. We conclude that this course gives a model for the method course in mathematics education for secondary school mathematics.

• 한국엔터테인먼트산업학회논문지
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• 제13권8호
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• pp.447-456
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• 2019

본 연구는 골프장 대중화를 위하여 대중제 골프장의 물리적 환경에 관하여 파악하고 하는 목적을 지녔다. 구체적이고 세부적인 측면으로는 대중제 골프장의 물리적 환경이 고객감정반응과 골프장 이미지 및 추천 의도에 미치는 영향에 대해 분석을 진행하고자 한다. 이러한 목적을 지니고 연구 참여자들의 인구통계학적 특징을 알아보기 위해 빈도분석을 시행하였으며, 탐색적 요인분석을 통해 구성 타당도의 검증을 시행하였으며, 신뢰도 분석을 하였으며, 다중공선성의 여부를 파악하기 위한 상관관계분석을 실시하였고, 제시된 가설들에 대해 검증을 하기 위해 다중회귀분석을 수행하였다. 본 연구결과, 첫째, 물리적 환경의 하위 요인인 편의성, 청결성, 심미성은 고객의 긍정적 감정에 영향을 주었으며, 둘째, 물리적 환경의 하위 요인인 청결성은 고객의 부정적 감정에 유의한 영향을 주었지만, 편의성과 심미성은 긍정적인 영향을 미치지 못하는 것으로 나타났다. 셋째, 물리적 환경의 하위 요인인 편의성, 청결성, 심미성은 골프장 이미지에 긍정적인 영향을 미쳤으며, 넷째, 물리적 환경의 하위 요인인 편의성, 청결성, 심미성은 추천 의도에 영향을 주는 것으로 밝혀졌다.

• 공학교육연구
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• 제17권2호
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• pp.59-67
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• 2014

This paper is about a case study of an interdisciplinary and intercultural collaborative design project course that has been offered for six years. The distinct characteristics of this course lie in that its students consist of those in two different disciplines, mechanical engineering and industrial design, and also in two different countries, Korea and Germany. The themes of the design project have been selected differently over the years, but always were related to transportation and, particularly, personal mobility devices. The paper first delineates the course and illustrates examples of the outcomes. Then, unique aspects and challenges of the course that have been observed through the six runs and that are associated with the intercultural and interdisciplinary nature are indicated and discussed. The author is convinced that this course has been successful in helping prepare the students for globally-operating manufacturing companies in the future. It is hoped that the findings from this course and the discussions contained in this paper would help those who plan to offer similar courses.

• 공학교육연구
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• 제13권1호
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• pp.3-16
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• 2010

이 논문은 기술 의사소통 기량을 기르기 위해 공대생들에게 가르치는 글쓰기 과목에서 어떤 내용들을 가르쳐야 할 것인지를 연구한 것이다. 이를 위해 먼저 국내 대학들에서 사용하는 글쓰기 교재들의 내용을 분석하였다. 기술문을 정의하고, 기술문 쓰기에 필요한 기초 글쓰기에 관한 내용들과 기술문의 특성을 고려하여 계열 글쓰기에서 가르쳐야 할 내용들을 열거하였다. 그런 내용들을 정하고 가르칠 필요성의 배경과 가르치는 사람 및 가르치는 일에 관련되는 내용을 토의하였다. 열거한 내용들을 반영한 교재와 그것들을 가르칠 방법의 개발이 일거리이다.

• 대한가정학회지
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• 제46권9호
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• pp.21-31
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• 2008

Family and child educators have an obligation to ensure that their students understand, conceptually and pragmatically, the major research methods. The purpose of this study was to develop a qualitative methodology course for graduate students majoring in family and child studies. Three stages of course development were followed; investigating how methodology courses are offered in family and child studies, discussing what topics and components should be covered in a qualitative methodology course, and planning how the topics and components should be taught. The proposed qualitative methodology course includes; understanding philosophical and theoretical frameworks, teaming the general process of a qualitative research, comparing different qualitative traditions of inquiry, discussing emerging issues related to qualitative research, and conducting experimental field work. This study can provide an academic syllabus for family and child educators, who are interested in teaching a qualitative methodology course for graduate students.

• 한국컴퓨터정보학회논문지
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• 제21권9호
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• pp.157-163
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• 2016

In this paper, I had studied to focus on the NCS(National Competency Standard) course in the development process of NCS-based curriculum and designed and developed 'Digital Color Correction' course. 'Digital Color Correction' course was come up with in process of development of NCS-based curriculum in a department of university that aims to educate video-broadcasting experts who lead the advanced digital age. The course developed in this paper follows criteria of NCS and is designed to step in course-profile, instruction and evaluation. Also I made an analysis of learning effects after applying to class. And I compared and analyzed NCS-class and non NCS-class. As a result of comparison, NCS-class is better than non NCS-class in student attitude for learning and evaluation method.

• 한국과학교육학회지
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• 제32권9호
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• pp.1427-1442
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• 2012

This study tracked the changes of preservice biology teachers' pedagogical knowledge along with science teaching efficacy throughout sequentially developed science methods course I and II over two consecutive semesters. Two courses, science methods course I and II, aimed these preservice teachers to discuss the notion of science teaching with teaching and learning theories, to learn science instructional models, to design lessons utilizing science instructional models, and to eventually implement microteaching. The preservice teachers were mainly engaged in cooperative instructional planning activities through science methods course I, and engaged in cooperative microteaching activities through the science methods course II. This study revealed that preservice teachers successfully developed pedagogical knowledge and science teaching efficacy after two science methods courses. The science methods course I where cooperative instructional planning activities occurred helped the preservice teachers to improve pedagogical knowledge but not science teaching efficacy. Based on their pedagogical knowledge development, then, these preservice teachers increased science teaching efficacy belief after completion of the science methods course II.

• 한국조경학회지
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• 제38권4호
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• pp.25-34
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• 2010

본 연구는 골프장의 경기력과 운영관리 향상을 위한 평가지표들을 개발하고자 수행되었으며, 연구결과를 요약하면 다음과 같다. 이론연구 및 전문가 예비설문을 통해 가정된 골프장 조성 및 운영관리 15개 중간평가지표, 55개 하위평가지표 체계가 성립되지 않고 최종적으로 환경친화성, 회원서비스 수준, 진행원의 인적서비스 수준, 코스의 난이도, 코스관리수준, 운영관리 공정성, 접근성 및 입지성, 클럽의 전통성 및 클럽의 분위기, 코스의 우수성, 코스레이아웃 등 10개의 중가 평가지표 및 52개 하위평가지표로 재구성되었다. 골프장 이용자 선호도 평가지표의 중요도 결정요인을 분석한 결과, 코스의 관리수준, 포스의 우수성, 진행원의 인적서비스 수준, 코스레이아웃, 환경친화성 순으로 기여도가 높게 나타났다. 골프장 평가지표의 경로계수를 파악한 결과, 코스레이아웃 부문에서는 홀의 굴곡과 코스길이의 순으로 인과효과의 크기가 나타났다. 코스의 우수성에는 토너멘트 진행시설, 다양한 샷 밸류(shot value)의 순으로, 운영관리 공정성에는 대기의 편리성, 예약의 공정한 배정 등의 순으로 인과관계가 높게 나타났다. 클럽의 전통성 부분은 골프코스의 역사 및 환경적 특성, 지역의 역사문화가, 접근성 및 입지성과 관련해서는 지리적 조건이, 환경친화성에서는 농약 및 비료유출량, 수질오염 등이, 회원서비스 수준에서는 회원혜택과 직원의 친절한 응대 등이 상대적으로 인과효과의 크기가 높은 지표로 나타났다. 경기진행원의 인적서비스 수준 분야에서는 경기진행원의 친절한 응대, 경기진행원의 전문지식 정도가, 코스의 난이도 부분은 티잉 에어리어(Terming area)의 위치, 오비(Out of Bounds: OB) 및 해저드(Hazard) 말뚝 위치의 순으로 코스의 관리수준에는 러프상태 및 장애물 관리상태 등이 상대적으로 인과효과가 높았던 지표들로 나타났다. 향후 보다 세부적인 평가지표들을 도출하는 후속연구를 통해 골프장 이용자 선호도 평가지표 체계 모델을 완성하고, 국내외 골프장을 대상으로 평가지표들을 현장 적용하고 검증해 보는 과정이 뒷받침될 필요가 있다.