• Korean Journal of Fisheries and Aquatic Sciences
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• v.6 no.1_2
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• pp.58-64
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• 1973

Changes in stock size of the Pacific saury, Cololabis saira, were studied on the basis of fishery statistics compiled from 1964 to 1972 and body size composition of the fish collected from 1968 to 1972. During the period from 1964 to 1972 there was a direct correlation between the stocks of fall (september-february of the following year) and spring (March-August) season. The sizes of stocks in both seasons showed a three-year cyclic change, and the mode of stock in the fall always proceeded one year that in the spring. Exceedingly high fishing effort was observed in the spring as well as the fall of 1967. But very low fishing effort was noticed in the spring of 1969. In spring a large stock size has a high proportion of large sized group. On the other hand, in fall a large stock size tends to have a high proportion of medium sized group instead. When the medium sized group outnumbers the large sized group, stock size becomes larger. In contrast, it tends to be smaller when the large sized group exceeds the medium sized group. The patterns of distribution centroid seems to be related to the amount of fish landings. Northward moving trend of the centroid was accompanied by a large amount of landing, while westward (or north-westward) moving trend was followed by a poor landing of the fish.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.439-450
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• 2019

The purpose of the study was to critically explore the academic identity of dance education as a paradigm of practice-based education. Dance education is recognized as a school dance since the first curriculum was designed, which was announced by the Ministry of Education in 1955. Although Korea's dance education has 65 years of history, its academic identity as a dance education is not very strong. Traditional dance education was teacher-centered, skills-oriented, and exercise-oriented by following the practice-based paradigm. Recently, an initiative was taken to establish a new paradigm for dance education in schools, communities, and professional fields. This study followed the keyword network analysis and reviewed the main contents of each section of dance education research from a time-series perspective. The first section (1968-1979) is a practice of dance education based on physical education; the second section (1980-1989) is a creative-based movement education for primary education; the third section (1990-1999) is a systematization of dance education courses by class; the fourth section (2000-2009) is a paradigm for cultural and artistic education; the fifth section (2010-2019) consisted of various educational practices and institutions. Based on the research results, efforts are requested to establish an academic identity that can support dance education, interdisciplinary practice, and research.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.9 no.1
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• pp.137-152
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• 1998

The purpose of this study was to review today's development trends of library bibliographic instruction through historical assessment of U.S. university library bibliographic instruction development pattern. And the results of this study may be used in implementing the university library bibliographic instruction program in Korea. The major conclusions of this study are summarized as follows: . The bibliographic instruction had been affected by changing trend of higher education. . Early leaders had been understanding of higher education and were active in the library organization. . Related books and articles were much published continuously. . Library professional organizations supported and assisted these effort. . Received financial aid from the government and non-profit organization. . Effective educational techniques were developed. . Implemented computer-aided education together with audio-visual technique.

• Economic and Environmental Geology
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• v.51 no.3
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• pp.249-277
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• 2018

This study aims to review the research trend of articles published in the journal of Economic and Environmental Geology(EEG) over a period of 50 years from 1968 to 2017. Based on the literature review, Research theme as analytical criteria was adopted. 1,886 academic articles were analyzed and classified by decade, by change period of journal name, and by volume(in sets of 10 volumes). Results indicate that from the foundation of journal to the present, the article in the field of petrology and geochemistry covers the highest proportion as 30.4%, the next best things are in the fields of metallic ore deposit(18.3%) and geophysics and exploration(14.9%). Based on the change period of journal name, the field of petrology and geochemistry have the most obvious difference in the number of articles. Until 1993 as before the change of journal name from Mining Geology to Economic and Environmental Geology, the coverage percentage in the field of petrology and geochemistry is 21.5%(N=121). However, after 1994 changed to Economic and Environmental Geology, the coverage percentage in the field of petrology and geochemistry is 34.1%(N=452). According to the analytical result in case of volume and research theme, the number of articles in the field of petrology and geochemistry have the abrupt increase from the volume number in 21 to 30. However, the number of articles in the field of metallic and nonmetallic ore deposit have the decreasing tendency toward the recent volume. In order to explore again the 50 years history of Economic and Environmental Geology, we mainly analyzed the articles quantitatively using the criteria as research theme. Based on these analyses, this review aims to offer the beginning for the exploration of the development subject in the future.

• Journal of Korean Society of Forest Science
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• v.36 no.1
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• pp.33-37
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• 1977

The secular trends and seasonal variation of the prices of imported lauan sawtimber, domestic red pine logs and sawtimber have been analyzed to find out the features and origins of price fluctuation in Korea for the period of 1961~1971. The results may be summarized as follows: 1. The relative prices of red pine logs were raised by 1.23 percent per year, and those of red pine and lauan sawtimber were decreased by 0.10 and 0.93 percent, respectively through the period. As a whole, there is a tendency in the country that timber prices were gradually decreased by lowing timber demand through savings in consumption and exploitation of alternative materials, with the increased supply through continuous log import. 2. There is also a tendency that the seasonal variation reduced in the last 15 years. In the period of 1961~1968, the seasonal price indices were peaked in spring and autumn, but thereafter peaked in spring and dropped down until winter. 3. In secular and seasonal variations of timber prices, the trend of sawtimber prices was dependent upon that of log prices but the fluctuation was larger in log prices.

• Korean Journal of Plant Taxonomy
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• v.48 no.4
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• pp.363-369
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• 2018

Since the establishment of the Korean Society of Plant Taxonomists (KSPT) on Dec. 13, 1968, the professional manpower training and research activities have been analyzed. The survey method was based on the homepage of the KSPT and the Korean J. Pl. Taxon, and on data provided by each university about professional manpower. Over the past 50 years, a total of 680 specialists in plant taxonomy have been trained, consisting of 537 master's degree holders (274 males, 263 females) from 30 universities and 143 PhDs (97 males, 46 females) from 26 universities, and the number has increased significantly since 1998. With regard to changes in the field of research over the last ten years, revision papers were the most common in the period of 1988-1997 (72%), but this rate has decreased to 51% over the last ten years, while the number of unrecorded papers has increased to 28%. In the 629 revision papers on taxa, 49% of the taxa belong to Asteraceae, Ranunculaceae, Cyperaceae, Liliaceae, Rosaceae, Fabaceae, Apiaceae, Lamiaceae, Orchidaceae, Oleaceae, Euphorbiaceae, Polygonaceae, and Amaryllidaceae. With regard to changes in research methods, the number of morphological papers increased from 6% to 51%, while pollen papers have decreased from a rate of 20% to only 2%. Chromosome studies account for 3-4%, chemotaxonomic studies 2%, and DNA studies remain low at 3-16%. The percentage of papers in English now stands at 43%, mainly due to the increased number of papers on unrecorded species.

• 월간 기계설비
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• s.253
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• pp.43-50
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• 2011

세계경제는 다극화 개방화 속에 수많은 다국적 기업이 글로벌 네트워크를 구축해나가고 있으며, 이에 따라 국내 외에서 기업들이 극심한 경쟁에 직면하고 있다. 중국은 근시안적인 단기 투자가 아닌 장기 투자 방식에 의해 세계시장을 점유해 가고 있으며, 일본은 중소 중견기업의 해외투자가 매년 평균 5% 이상 증가할 정도로 해외투자에 집중하고 있다. 이처럼 국제경쟁이 치열한 가운데 글로벌 시장 점유를 위한 우리 기업의 해외시장 진출도 지난 1968년 이후 꾸준히 증가해 2008년에는 해외건설 수주액이 300억불, 2010년에는 700억불을 돌파했고, 진출지역도 중국 등 아시아를 중심으로 유럽 및 중남미 지역까지 확대되는 등 그 영역을 확장해왔다. 이러한 양적 성장에도 불구하고 대기업에 비해 중소기업은 해외투자에 대한 정보 인력 자금 등이 부족한 실정이다. 본지는 회원사의 해외진출에 도움을 주고자 정부 각 기관의 해외진출 서비스 및 제도, 해외진출 시 필수 체크사항 등을 중심으로 해외진출 가이드를 게재하고 있다.

• 월간 기계설비
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• s.248
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• pp.54-58
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• 2011

세계경제는 다극화 개방화 속에 수많은 다국적 기업이 글로벌 네트워크를 구축해나가고 있으며, 이에 따라 국내 외에서 기업들이 극심한 경쟁에 직면하고 있다. 중국은 근시안적인 단기 투자가 아닌 장기 투자 방식에 의해 세계시장을 점유해 가고 있으며, 일본은 중소 중견기업의 해외투자가 매년 평균 5% 이상 증가할 정도로 해외투자에 집중하고 있다. 이처럼 국제경쟁이 치열한 가운데 글로벌 시장 점유를 위한 우리 기업의 해외시장 진출도 지난 1968년 이후 꾸준히 증가해 2008년에는 해외건설 수주액이 300억불, 2010년에는 700억불을 돌파했고, 진출지역도 중국 등 아시아를 중심으로 유럽 및 중남미 지역까지 확대되는 등 그 영역을 확장해왔다. 이러한 양적 성장에도 불구하고 대기업에 비해 중소기업은 해외투자에 대한 정보 인력 자금 등이 부족한 실정이다. 본지는 회원사의 해외진출에 도움을 주고자 정부 각 기관의 해외진출 서비스 및 제도, 해외진출 시 필수 체크사항 등을 중심으로 해외진출 가이드를 게재한다.

• 전기의세계
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• v.24 no.6
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• pp.35-38
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• 1975

금속과 원소반도체의 접촉으로 이루어진 점접촉트란지스터를 출발점으로 한 P-N접합트란지스터는 4반세기동안 반도체전자 소자의 중심이었다. 이와 같은 반도체소자는 단결정반도체의 특성을 이용한 것으로 그 제작에 있어 거의 완전에 가까운 결정구조와 극도의 화학적순수성이 요구되는 것이다. 이와 같은 요구조건은 접합형 반도체소자제작에 큰 제한을 주게 된다. Gunn Diode, Impatt Diode등으로 반도체소자는 Bulk형식의 것이 각광을 받게 되었으며 MOS형식의 FET에 이르러 신기원을 이루게 되었다. 이리하여 MOS기술은 Sapphire기반을 도입함으로써 SOS기법으로 발전을 거듭하게 되었다. 그러나 정질반도체의 이용이라는 근본적 개념에서는 이탈치못하고 있다. 이상과 같은 정질반도체소자에 대응하여 반대적 입장에서 불순물농도의 영향이 적은 비정질반도체의 연구가 70년이후 미국을 중심으로 활발하게 전개되고 있다. 그 연구 및 개발결과는 2년마다 이루어지는 액체비정질반도체국제회의에서 종합되고 있다. 이 분야에서의 연구는 1968년 Ovshinsky가 비산화물 Chalcogenide glass 비정질박막에서의 빠른 응답속도의 양극대칭성 Switching 현상 발견을 계기로 신국면을 개척하게 된 것이다. 이들 비정질반도체에 대한 물성론적 흥미와 응용면에 관한 기대로부터 전도기구의 해명과 응용회로의 개발연구가 급속히 진전되고 있다.

• JOURNAL OF ELECTRICAL WORLD
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• no.8 s.12
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• pp.8-21
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• 1968

일본전기협회의 초청을 받아 일본국 북해도 찰모(Sapporo)시에서 개최된 제47회 통상총회에 박영준 회장, 성찬용 상임이사, 홍종익 이사국장 세분을 모시고 참석할 기회를 가졌다. 1921년 10월에 상시 동경, 대판, 복강에 존재하던 3개의 전기협회가 합병되어 전국적 단일조직으로서 설립된 것이 오늘의 일본전기협회인데 동협회의 총회는 정관상 통상총회 (년1회)와 임시총회의 두가지가 있음은 우리와 같다. 일본전기협회의 총회 47회의 역사를 훑어보면 전전에는 대개 동경과 대판에서 많이 개최되었고 전후에도 제33회가 대판에서, 제35회가 명고야에서 개최된 것을 제외하고는 제38회까지 계속 동경에서만 개최되어 왔다(임시총회 도합 14회는 모두 동경 개최). 1959년의 제38회 총회에서 앞으로는 격년으로 지방에서 통산총회를 개최하기로 결의되어 이후 황도(제39회), 선대(제41회), 금택(제43회), 고송(제45회)를 거쳐 금년에는 제47회 통상총회가 북해도의 도도인 찰모시에서 개최되기에 이르른 것이다.