• 컴퓨터교육학회논문지
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• 제12권5호
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• pp.95-103
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• 2009

본 논문에서는 온톨로지를 기반으로 사용자에게 의미적으로 관련된 링크를 자동적으로 제공하는 웹 항해 안내 시스템을 제안한다. 본 시스템은 각각의 웹 페이지를 온톨로지에 존재하는 특정 개념과 관련시키고, 온톨로지에 정의된 개념들 간의 관계를 고려하여 웹 페이지들 간의 새로운 링크를 생성한다. 본 시스템은 온톨로지를 기반으로 의미적 링크를 제공함으로써 웹 항해 안내를 향상시키는데 초점을 두고 있다. 본 노문에서 제안한 시스템을 이용하여 초등학교 5학년 학생들에게 웹 페이지를 탐색하면서 과제를 수행하는 실험을 한 결과 실험 집단에 속한 학생들의 방향 상실 정도, 웹 페이지의 재 방문율, 그리고 과제 수행에 소비된 시간이 통제 집단에 속한 학생들의 경우보다 작았고 과제 수행율은 실험 집단의 학생들이 통제 집단의 학생들보다 높았다. 본 논문에서 제안하는 시스템은 웹 기반 교육에서 중요한 항해 가능한 웹 사이트를 설계하는 데 도움이 되리라 기대된다.

• 한국컴퓨터정보학회논문지
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• 제19권10호
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• pp.221-230
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• 2014

이 연구에서는 학생들이 황새 복원과 관련된 주제의 프로젝트를 수행하는 과정에서 여러 학문의 지식을 활용하여 학습능력이 신장될 수 있는 방법을 제안하고자 한다. 개발 프로그램은 3 4학년군, 5 6학년군 각 4차시 총 8차시이며, 각 차시에서 황새와 관련된 초등학교 교과의 지식이나 개념을 기반으로 창의성, 문제해결능력, 의사소통능력 등의 학습능력이 신장될 수 있도록 설계하였다. 프로그램의 타당성 검증을 위해 총 12명으로 구성된 전문가 집단에 내용타당도 검증방법을 사용하였다. 타당성 평가 결과 분석을 위해서 Lawshe(1975)의 내용타당도 비율(Content Validity Ratio: CVR) 계산 공식을 활용하였다. 검증 결과는 전체 8차시의 타당성 조사 결과 3,4학년 4차시 프로그램을 제외하고는 개발 취지에 부합하는 것으로 분석되었다. 3 4학년 4차시 프로그램은 다학문적 연계 영역에 대한 문제점이 제기되었고, 이를 수정하였다. 향후 이 연구에서 제안한 프로그램을 초등학교 학생에게 적용하여 학습능력 향상 효과성 정도를 측정할 필요가 있겠다.

• 한국초등과학교육학회지:초등과학교육
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• 제18권1호
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• pp.19-28
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• 1999

This study aims to analyze tile research trends of science education in Korea, and suggest the direction of the desirable research, which is to help the improvement of science education practically. To achieve these aims, the papers related to the science education (paper;1288, master′s thesis;724, doctoral thesis;59), which were published from 1992 to 1996 in Korea, are classified by the criteria for the analysis and summed up. The condensed results of this study are as follows, 1. The papers published through this period, maintains the stability in aspect of quantity compared with 1980s. It is owing to the efforts of the prime investigator so that "the science education," as a part of normal science, may settle down in Korea. 2. In the case of thesis for the academic degree, the doctoral theses are rare, as the ratio of the doctoral vs. the master′s is 1:13. Even so, most of the theses were produced by a few universities(master′s thesis/Kor. Nat. Univ. of Edu.;28.3%, Ewha Woman′ Univ.;16.2%, doctoral thesis/Seoul Nat. Univ.;57.6%, Kor. Nat. Univ. of Edu.;22.0%). 3. Most of papers are preponderant at three categories among the ten categories proposed by this study (science teaching-learning material;23.5%, science teaching methods;21.4%, psychology of science education;21.1%). 4. Concerning the subject of research, these papers are not diversity and intensive, that is; the subject related to scientific concepts, scientific thinking and attitude, and analysis of scientific textbook is 17.7%, 14.3%, and 10.5% of the total, respectively. 5. Though not including this study, among the theses for the master of science education, many of theses are related to the subject of pure science. There are some suggestions related to tile results of this study. The severe preponderance ill the training process, the subject, and area of research, can be pointed out one of the flimsy in our researches of science education. Because these cannot be considered separately, the policy and support of educational administration must be needed to remove this phenomena. To improve the present situation of science education, the research funds have to be given to the practical than the theoretical subjects. Which can make promptly a settlement of tile problems and difficulties from the field of science education, and encourage the reseal,:h activities that tile front teachers take part in. Lately, the accumulation of literature and references are a prior condition in the development of academic knowledge. Therefore the data base system for the information of science education and translation of foreign literature related to science education must be achieved. In addition, the programs that tile teacher and the investigator can make good use of such an information without limited conditions, must be prepared.

• 한국지구과학회지
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• 제23권2호
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• pp.147-153
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• 2002

Reasonable and reliable assessment method is one of the most important issues in science education, Partial credits method is an effective tool for assessing students' science inquiry problem solving. The purposes of this study were to classify the Problem solving types based on the analysis of the thinking Process, and how much the related science concept and the science process skills were used in solving science inquiry problems, and to describe the possibility and rationality of the assessment method that gives partial credit 128 high school seniors were selected and their answers were analyzed to identify science concepts they used to solve each problem, and the result was used as the criterion in the scientific concept test development. Also, to study the science inquiry problem solving type, 152 high school seniors were selected, and protocols were made from audio-taped data of their problem solving process through a think-aloud method and retrospective interviews. In order to get a raw data needed in statistical comparison of reliability, discrimination and the difficulty of the test and the production of the regression equation that determines the ratio of partial credit, 640 students were selected and they were given a science inquiry problem test, a science process skills test, and a scientific concept test. Research result suggested it is more reasonable and reliable to switch to the assessment method that applies partial credit to different problem solving types based on the analysis of the thinking process in problem solving process, instead of the dichotomous credit method.

• Asian Pacific Journal of Cancer Prevention
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• 제17권12호
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• pp.5127-5132
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• 2016

Objective: The aim of this study was to identify associations of internal motivation, perceived health competency, and health literacy with primary and secondary cancer prevention. Methods: A telephone survey was conducted with a sample of 2,700, 30-69 year olds, proportionally extracted from Gangwon Province, South Korea. The dependent variables were actions in primary and secondary prevention and the explanatory variables were 13 questions in three areas: internal motivation (4 items), perceived health competency (4 items), and health literacy (5 items). Result: Multiple linear regression analysis showed that internal motivation, perceived health competency, and health literacy positively impacted primary prevention after controlling for gender and age. As internal motivation, perceived health competency, and perceived literacy increased by 1 point, primary prevention scores increased by 0.11, 0.11, and 0.07 points, respectively. In addition, logistic regression results for secondary prevention showed that health literacy had a positive impact on secondary behavior. As health literacy increased by 1 point, the odds ratio of the practice of secondary prevention was 1.4 times higher. Conclusion: This study suggests that primary and secondary prevention of cancer are significantly related to intrinsic motivation factors, perceived health competency, and actual health literacy. Health literacy concepts that cover the capacity of health management in comprehensive areas need to be applied to education and promotion for improvement of primary and secondary prevention of cancer.

• 정보처리학회논문지A
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• 제13A권4호
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• pp.295-304
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• 2006

자바 언어는 객체지향성, 안전성, 유연성으로 인하여 현재 가장 널리 쓰이는 프로그래밍 언어의 하나가 되었으며, 자바 가상머신이 제공해주는 메모리 관리기 및 가비지 컬렉터로 인하여 프로그래머는 메모리 관리에 관한 많은 고민이 줄어들었다. 본 논문에서는 임베디드용 자바 가상 머신에서 구현된 메모리 관리기 및 가비지 컬렉터에 대해서 제안한다. 메모리 관리기는 힘을 다양한 크기의 셀로 분할한 후 통일한 셀의 집단인 블록 단위로 관리하여 빠른 메모리 할당과 해제가 가능하다. 가비지 컬렉션 방법으로는 3-색상 기반 표기-쓸어담기 가비지 컬렉터를 기반 알고리즘으로 채택하였으며 멀티쓰레드를 지원하기 위해 새로운 4-색상 기반 표기-쓸어 담기 가비지 컬렉터를 제안한다. 제안하는 기법은 메모리 단편화가 발생하지만 객체 생성수가 많아짐에 따라 단편화율이 거의 일정함을 실험을 통해 보인다.

• Advances in aircraft and spacecraft science
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• 제3권3호
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• pp.243-257
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• 2016

The increase of air traffic volume has brought an increasing amount of issues related to carbon and NOx emissions and noise pollution. Aircraft manufacturers are concentrating their efforts to develop technologies to increase aircraft efficiency and consequently to reduce pollutant discharge and noise emission. Ultra High By-Pass Ratio engine concepts provide reduction of fuel consumption and noise emission thanks to a decrease of the jet velocity exhausting from the engine nozzles. In order to keep same thrust, mass flow and therefore section of fan/nacelle diameter should be increased to compensate velocity reduction. Such feature will lead to close-coupled architectures for engine installation under the wing. A strong jet-wing interaction resulting in a change of turbulent mixing in the aeroacoustic field as well as noise enhancement due to reflection phenomena are therefore expected. On the other hand, pressure fluctuations on the wing as well as on the fuselage represent the forcing loads, which stress panels causing vibrations. Some of these vibrations are re-emitted in the aeroacoustic field as vibration noise, some of them are transmitted in the cockpit as interior noise. In the present work, the interaction between a jet and wing or fuselage is reproduced by a flat surface tangential to an incompressible jet at different radial distances from the nozzle axis. The change in the aerodynamic field due to the presence of the rigid plate was studied by hot wire anemometric measurements, which provided a characterization of mean and fluctuating velocity fields in the jet plume. Pressure fluctuations acting on the flat plate were studied by cavity-mounted microphones which provided point-wise measurements in stream-wise and spanwise directions. Statistical description of velocity and wall pressure fields are determined in terms of Fourier-domain quantities. Scaling laws for pressure auto-spectra and coherence functions are also presented.

• 한국과학교육학회지
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• 제29권3호
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• pp.329-347
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• 2009

Science curriculums for elementary schools were, traditionally, developed to be balanced in content and contain equal proportions of the four branches of science: physics, chemistry, biology, and earth science. To develop a successful science curriculum, we asked some questions about how elementary students recognize these branches and about what they think of the domains of science in the science curriculum. Our study was designed to investigate how elementary students classify the domains of science in the curriculum. Previous research (Lee et al., 2001) seemed not to be successful, because verbal expressions in that research might be inappropriate for elementary students who were unaccustomed to the technical language of science. For this reason, instead of using only words, we developed image card instruments, made of picture duplicates of the introductory covers of each unit in the 3$^{rd}$, 4$^{th}$, and 5$^{th}$ grades' science textbooks. We asked students to classify these cards into their own categories and record the reasons for classifying them. The ratio and distribution of the units was then analyzed to identify their view of the science domains. 30% of the 4$^{th}$ grade students created the following categories: 'nature,' 'observation,' 'seasons,' 'living things,' 'sounds,' 'separating,' and 'the things necessary for everyday life'. In the case of the 5$^{th}$ grade, over 30% created the categories of 'living things,' 'weight,' and 'water.' Over 30% of the 6$^{th}$ grade created the categories of 'nature,' 'light,' 'water,' 'living things,' 'solution,' 'fire,' 'properties of an object,' and 'experiment.' Upon scrutinizing the above results, we discovered that the science domains selected by students into three types of domains: academic contents and concepts; activities related to a science class; and lessons and experiences in students ' lives. The last category was a new, complex kind of domain. We concluded that students did not utilize the four branches of science when constructing their own domains of science. Instead, they created many alternative domains, which reflected students' thoughts of and their experiences. The educational needs of elementary students suggest that when organizing science curriculum as 25 % allocation of the four science branches, newly-created domains should be considered.

• 수산경영론집
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• 제45권2호
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• pp.39-59
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• 2014

Recently the rapid changes of the social environment make both university and every each department should have to renovate and adjust all of the educational components. The most dominant and issuable change of business administration education is the Business Education Accreditation which was certified by the KABEA(Korean Association of Business Education Accreditation). And the only two department of fisheries business administration which in Gyeongsang National University and Pukyong National University has been accredited recently. Though The department of fisheries business administration in Korea has been influenced by that Accreditation, there is few research and analysis on educational change. So it is very important that research on the curricular constitution and change of the curriculum for considering the its own effect and influence. This paper aims to explore the curricular constitution, change and course fulfillment of fisheries business administration after the business education accreditation based on the case of the department of fisheries business administration in Gyeongsang National University. The analysis of fisheries business administration change will help develop sustainable curriculum and give more guideline for identifying the core of fisheries business administration. The method of analysing that in this research has adopt the social network analysis(SNA) and automated software tool which is the most dominant technique in contents analysis including the Krkwics and Pajek. The SNA is evaluated that most popular, rigorous and firm methodology for analyzing, examining and revising some concepts or objects in the context of semantics. The result of this study shows that the ratio of fisheries business administration class has been decreased but still the most fulfilled course. And English mediated class has been avoided though that sort of the class has been increased. In the view point of course fulfillment, it has been potential and inefficient problems that some classes that including financial related and accounting related class would not been accomplished appropriately. The findings of a graduate depth interview which has been done about 4 years for understanding that student show that there's some recognition gap of fisheries business administration in staffs of human resource management. And the level of job satisfaction in fisheries business still somewhat low and even worse the chance of recruitment also unsteady.

• 한국과학교육학회지
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• 제33권2호
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• pp.249-265
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• 2013

이 연구의 목적은 탐구에 기반한 과학 글쓰기 활동(Inquiry-based Science Writing Heuristic)에서 읽기틀이 사용되었을 때 반성 글쓰기에 미치는 영향을 알아보기 위한 것이다. 이 연구는 중학교 3학년 67명을 대상으로 하였으며, 32명을 R-SWH(Reading framework-Science Writing Heuristic) 집단으로, 35명을 SWH(Science Writing Heuristic) 집단으로 선정하였다. 총 4개의 탐구에 기반한 과학 글쓰기 활동에서 R-SWH 집단은 읽기틀을 지속적으로 사용하였고, SWH 집단은 읽기틀을 사용하지 않았다. 연구 결과 R-SWH 집단은 SWH 집단 보다 읽기자료에서 학습한 내용을 활용하여 반성 글쓰기를 작성한 인원의 비율이 높았다. 반성 글쓰기에서 읽기자료를 활용한 용도를 분석한 결과, R-SWH 집단은 학습 주제와 관련된 개념을 통합적으로 이해하기 위해 읽기자료를 사용하는 비율이 가장 높았고, SWH 집단 역시 개념에 대한 통합적인 이해를 설명하기 위해 읽기자료를 사용하였으나 R-SWH 집단에 비해 그 비율이 높지 않았다. 또한, R-SWH 집단의 경우 활동이 진행됨에 따라 읽기자료로부터 학습한 과학개념을 반성 글쓰기로 전이하는 학습자의 비율과 전이되는 개념의 수가 SWH 집단에 비해 높았다. 따라서 탐구에 기반한 과학 글쓰기 활동에서 사용된 읽기틀은 의미 있는 읽기, 쓰기 활동을 촉진시켜 과학개념에 대한 이해를 발달시키기 위한 스캐폴딩의 역할을 할 수 있다.