• 천문학회보
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• 제45권1호
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• pp.50.3-50.3
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• 2020

We present deep UBVIc and Hα photometry for the young open cluster IC 1590 which is at the center of the HII region NGC 281. From Ha index, 39 Hα emission stars and 15 Hα emission candidates are selected. The reddening law toward IC 1590 is slightly abnormal (RV,cl = 3.6 ± 0.2). The distance modulus of IC 1590 obtained from the reddening-free (Q', QVλ) diagrams is 12.4 ± 0.1 mag (d = 3.02 ± 0.14 kpc), which is consistent with distance d = 2.91 ± 0.42 kpc from the parallax of Gaia DR2 catalogue within the error range. We also determined the age and mass function of IC 1590 using the stellar evolution models and PMS evolutionary tracks. The median age of PMS stars is 2.4 ± 2.2 Myr. The initial mass function (IMF) of IC 1590 is the Salpeter-type IMF with a slope of �� = -1.26 ± 0.14 for m > 1 M⊙ stars.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 춘계학술대회
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• pp.301-302
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• 2023

스마트 항로표지의 서비스를 동일한 규격으로 제공하고 사용자 인증과 접근 권한을 관리하기 위해 서비스 플랫폼을 설계하였다. 서비스 플랫폼의 요구사항을 충족하기 위해 사용자 인증을 위한 OIDC 구현 오픈소스인 Keycloak을 사용하였으며 서비스 관리를 위해서는 S-100 객체 카탈로그 버전 관리 방안을 사용하였다. 내부 서비스 데이터를 S-100으로 규격화 하기 위해서는 내부 서비스 데이터는 JSON Schema를 사용하여 S-100 데이터로 매핑을 위한 최소 규격을 설계하였다.

• 한국문헌정보학회지
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• 제12권
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• pp.39-86
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• 1985

The main purpose of the present study is to survey the major iudexing bulletins of national nature in Korea, to define such problem areas as lacunae, duplicates and limitation in coverage in the indexing services currently available in Korea, and to make some suggestions for action for improving the existing indexing services in the light of general principles and the tradition and constraints unique to Korea. The major findings and conclusions reached at this study are summarised as follows: (A) A new indexing bulletin of general nature covering the entire field needs to be created in each of the following fields without an established indexing service available for the outcome of research and development activities in Korea. (1) Philosophy (2) Religion (3) Pure sciences (4) Art (5) Language (6) Literature (7) History (B) A new specialised indexing bulletin needs to be created in each of the following fields where indexing services are heavily utilised but no, or only partial, indexing service is available. (1) Social sciences (a) Statistics (b) Sociology (c) Folklore (d) Military science (2) Pure sciences (a) Mathematics (b) Physics (c) Chemistry (d) Astronomy (e) Geology (f) Mineralogy (g) Life sciences (h) Botany (i) Zoology (3) Applied sciences (a) Medicine (b) Agriculture (c) Civil engineering (d) Architectural engineering (e) Mechanical engineering (f) Electrical engineering (g) Chemical engineering (h) Domestic science (C) Publication of the indexing bulletins suggested in A and B above may be ideally carried on by a qualified and dependable learned society established in the respective fields and designated by the Minister of Education, and should be financially supported from the public fund under the provisions of Art. 27 of the Scientific Research Promotion Act of 1979. (D) The coverage and contents of the four indexing bulletins in the field of banking and financing published by the Library of the Bank of Korea are similar and considerably duplicated. It is, therefore, suggested that the four indexing bulletins are combined in one to form a more comprehensive and efficient bibliographical tool in the field and it is further developed into a general guide to the literature produced in the entire field of economics in Korea by gradually expanding its subject coverage. (E) For the similar reasons stated in D, the Index to the Articles on North Korea and the Catalogue of Theses on North Korea, both publisheds by the Ministry of Unification Library, are suggested to make into one. The Index to the Articles of the Selected North Korean Journals and the Index to the Articles of the North Korean Journals in Microfilm Housed in the Ministry of Unification Library, both published by the same Library, are also suggested to be combined in one. (F) The contents of the Catalogue of the Reports Submitted by Government Officials Who Have Travelled Abroad, published by the National Archives are included in the Index to the Information Materials Related to Government Administration, published by the National Archives. The publication of the former is hardly justified. (G) The contents of the Index to Legal Literature published by the Seoul National University Libraries and those of the Law Section of the Index to Scholastic Works published by the National Central Library are nearly identical. One of the two indexes should cease to be published. (H) Though five indexes are being published in the field of political science and four in the field of public administration, their subject coverage is limited. Naturally, these indexes are little usable to many other researchers in the two fields. A comprehensive index covering all the specialised areas in each field needs to be developed on one or all the existing indexes. (I) It is suggested that the Catalogue of the Scholastic Works on Curricula published by the National Central Library expands its subject coverage to become a more usable and effective index to all the researchers in the field of education. (J) The bimonthly Index to Periodical Articles and the specialised index by subject series published by the National Assembly Library, and the Index to Scholastic Works published by the National Central Library are expected to increase their coverage and frequency of publication to be used more effectively and more efficiently by all users in all fields till the indexing bulletins suggested in this study will fully be available in Korea.

• 한국항행학회논문지
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• 제21권4호
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• pp.377-385
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• 2017

태양광 발전에 있어서 태양전지는 일사량, 온도와 부하에 의해 크게 변동하기 때문에 태양전지에 대한 특성 해석이 필요하다. 또한 태양광 발전에 있어서 가능한 많은 에너지를 얻기 위해서는 환경변화에 따른 태양의 위치추적이 필요하며 태양전지의 출력을 항상 최대로 제어할 필요가 있다. 본 논문에서는 태양광 발전의 효율을 높이기 위하여 센서와 마이크로프로세서를 이용한 태양광 위치추적 장치를 설계하여 고정방식의 태양광 발전과 위치 추적 방식의 태양광 발전에 대하여 비교해 보았으며, 태양전지에 대한 특성 해석과 수학적 모델링을 통한 시뮬레이션을 행하여 태양전지 특성 사양과 비교해 보았다. 또한 전력변환 시스템을 Boost 컨버터와 전압형 인버터로 구성하여 각각에 대하여 실험하였으며, Boost 컨버터 제어에서 최대 전력점 추적을 위해 일정전압 제어법을 사용하였으며 인버터의 제어에서는 SPWM(Sinusoidal Pulse Width Modulation) 제어법을 사용하여 실험해 보았다. 그 결과 태양전지 수학적 모델링 한 것의 시뮬레이션 결과와 태양전지 특성 사양과 비교하였을 때 5%이하의 오차를 보였으며. Boost 컨버터의 승압율은 167%로 시뮬레이션 한 것과 근사적으로 나타났고, 인버터는 시뮬레이션 한 것과 근사적 파형을 얻었으나 손실이 큰 것으로 나타났다.

• 한국도서관정보학회지
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• 제50권4호
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• pp.539-559
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• 2019

도서관의 기본적인 서비스 중 하나는 이용자에게 자료에 대한 효율적이고 쉬운 검색을 제공하는 것이다. 국내·외적으로 관종별, 이용자별, 장서별 자료의 접근성 향상을 위한 다양한 논의들이 있었고, 그 중심에 분류와 목록 시스템의 개선에 관한 이슈가 존재한다. 하지만 국내 학교도서관 자료 접근의 중심도구가 되는 DLS 목록의 자료 접근성을 다루는 이 분야 연구는 많지 않다. 본 연구는 학교도서관 현장에서 제기되어온 이용자들의 도서 검색, 특히 문학 분야 도서 검색과 접근에 대한 어려움에서 시작하였다. 본 연구는 이러한 어려움의 원인을 다양한 측면에서 고찰해 보고자한 탐색적 연구이다. 이를 위해 학교도서관 장서 현황, 학교도서관 지원시스템 DLS의 자료 등록과 이를 통해 생산된 목록레코드의 주제 접근가능성, 학교도서관 사서교사 및 사서의 의견을 조사·분석하였다. 연구 결과, 학교도서관 장서는 문학 분야에 상당히 집중되어 있었고, 이들 장서 검색에 효율적인 접근을 제공할 수 있는 목록레코드 작성은 충분하지 않은 것으로 나타났다. 또한 이를 보완할 수 있는 DLS 검색 기능 역시 다소 부족한 것으로 나타났다. 학교도서관 사서교사 및 사서들의 설문조사에서도 이런 문제점은 인식되었고 학교도서관 목록의 자료 접근성을 향상시킬 수 있는 방법으로 풍부한 주제 색인과 검색키워드 부여가 다수의 의견으로 도출되었다. 이 주제에 대한 계속적인 논의로서 학교도서관 자료의 접근성 향상을 위한 방안은 향후 이용자 연구나, 서가 분류에 대한 새로운 도전 등을 통해 더욱 구체화 될 수 있을 것이다.

• 한국문헌정보학회지
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• 제11권
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• pp.147-183
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• 1984

This is an analytical study on Munheongak (文獻閣) and it's catalogue. The major objective of the study is to get a recognition of Munheongak under the culture of Sukjong (肅宗) period in Korean library history. Most of early studies made on such a category have been concentrated on Jiphyunjeon (集賢殿), Hongmungwan (弘文館), Kyujanggak(奎章閣) and their backgrounds. In this study, the author has invest gated Kungwolji (宮闕志), Munheongakseomg (文獻閣書目) and other materials related to this subject. The findings of the study can be summarized as follows: 1. Munheongak was established by king Sukjong in the 26th year of his reign. According to some records of Kungkwolji, the reason of establishment of the library was to arrange the collection in the Sango (相庫) consisted of various kinds of materials. In case of books, most of them turned out to be Korean books. 2. Munheongak was sited to the estern side of Kyunghyundang (景賢堂), which was located on the Kyungdeokgung (慶德宮). After Youngjo (英祖) the place was called Kyungheuigung (慶熙宮) so as to avoid the name of the precedent king. But these days, both the buildings are not to be found. 3. After its establishment, the library could not play the role as a library because of the then political situation and sectionalism. During the period of the revival of the learning from Youngjo till Jeongjo(正祖) the function of the library was in a stagnant state. Kyujanggak played the part in its place. 4. Referring to the collection management, the Munheongakseomog is equipped with 101 titles, 2,525 volumes, which are arranged by means of the traditional Chinese classification system. 5. The classification scheme is based on the traditional Chinese classification system which might divide all subjects into four categories such as: Confucian classics division, Historical documents division, Master's division, and Collection of literature division. Some illustrations reveal that the classification system was directly influenced by Seogoseomg (書庫書目) : the influence reflected in the classes for the translated literature and writings, poems, genealogy about kings, etc. But some subdivisions such as a class of Annals, Historical Epcerpts were omitted in the classification scheme, which did not strike the balance in the system in terms of the present theory of classification. Most of bibliographical descriptions were also influenced by Seogoseomog but some elements were partly omitted. 6. The special feature of the collection building is the absence of books in Collection of literature division except only three kinds of books in examining the Munheongakseomog. Since this is rather a comprehensive study for such aspects as historical backround, catalogue, and cultural environment of Munheongak and its related record, it is advised that further and additional research should be made.

• 한국비블리아학회지
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• 제6권1호
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• pp.133-160
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• 1984

The main purpose of the present study is to survey the major abstracting bulletins of national nature in Korea, to define such problem areas as lacunae, duplicates and limitation in coverage in the abstracting services currently available in Korea, and to make some suggestions for action for improving the abstracting services in the light of general principles and the tradition and situations unique to Korea. The major conclusions reached at this study are summarised as follows: (A) A new abstracting bulletin of general nature covering the whole field needs to be created in each of the following fields where no established abstracting service is available for the outcome of research and development activities in Korea. (1) Language (2) Religion (3) Art (4) Language (5) Literature (6) History (B) A new specialised abstracting bulletin needs to be created in each of the following fields of science where abstracting services limited in coverage are partially available. (a) Statistics (b) Sociology (c) political science (d) Public administration (e) Law (f) Folk lore (g) Military science (2) Pure sciences (a) Mathematics (b) Chemistry (c) Astronomy (d) Geology (e) Mineralogy (f) Life sciences (g) Botany (h) Zoology (3) Applied sciences (a) Agriculture (b) Architectural engineering (c) Mechanical engineering (d) Electrical engineering (e) Chemical engineering (f) Manufacturing industry (g) Domestic science (C) Publication of the abstracting bulletins suggested in (A) and (B) above may be ideally carried on by a qualified learned society established in the respective field. and should be financially supported by the public fund under the provisions of Art. 27 of the Research Promotion Act of 1979. (D) The current practice of adding the author's abstract and keywords to each of the records of the "Doctoral Theses in Humanities and Social Sciences" part of the" Catalogue of Doctoral and Master's Theses Submitted to the Universities in Korea" published by the National Assembly Library should be applied to all the other parts, i. e. to the parts of the "Master's Theses in Humanities and Social Sciences" and of the "Doctoral and Master's Theses in Natural Sciences': which will not only increase the Catalogue's use value but also discourage appearance of various theses abstracts of individual academic institutions such as the" Abstracts of the Doctoral and Master's Theses Submitted to Korea Advanced Institute of Science and Technology" which will in turn reduce inefficiency involved in the abstracting services at national level. (E) A general abstracting bulletin covering most part of the outcome of research and development activities in Korea other than that covered by the existing abstracts needs to be created to be temporarily. used till the abstracting journals suggested in this study will be fully available. A realistic way of having such a bulletin may be to expand the present coverage of "The Abstracts of the Reports of the Government-sponsored Projects" currently published by Korean Research Foundation.

• 한국콘텐츠학회논문지
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• 제19권5호
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• pp.381-388
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• 2019

국내 체류 결혼이주여성 중 10년 이상 장기 정착비율이 증가하고(48%) 5년 미만의 단기 정착비율은 감소(16%) 하는 오늘, 결혼이주여성 중심 한국어 교육 및 연구는 여전히 초기 입국자에게만 집중돼 있다. 체류기간별 맞춤형 한국어 교육 및 교재의 다양화가 필요하다는 입장에서, 본 연구는 초기 입국자가 아닌 중 고급수준의 한국어 의사소통이 가능한 자녀양육기, 자녀교육기 및 가족역량강화기에 해당하는 결혼이주여성 중심 한국어 교육에서 한자성어의 활용 가능성 및 교육적 가치를 탐색하고, 결혼이주여성을 중심으로 한 한국어 교육 및 교재 개발에 적합한 한자성어 목록 선정에 주안점을 두고 있다. 연구결과, 한자성어를 활용한 한국어 교육은 결혼이주여성의 언어학습 정보획득 측면, 인간관계 생활태도 측면, 문화이해 사회적응 측면, 자녀 양육 학습지도 등 측면에 큰 도움을 줄 수가 있어, 결혼이주여성 중심 한국어 교육에서 지도할 필요가 있는 부분이다. 이와 더불어 결혼이주여성 중심 한국어 교육 및 교재 개발에 적합한 한자성어 130개를 4단계 과정을 걸쳐 교육용 목록을 선정 및 제시하였다. 이와 같은 연구결과가 향후 결혼이주여성 중심 한국어 교육연구 및 교재개발에 활용되는 참고 자료가 되기를 기대한다.

• 한국연초학회지
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• 제27권1호
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• pp.107-114
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• 2005

The uncertainty of measurement in quantitative analysis of ammonia by continuous-flow analysis method was evaluated following internationally accepted guidelines. The sources of uncertainty associated with the analysis of ammonia were the weighing of sample, the preparation of extracting solution, the addition of extracting solution into the sample, the reproducibility of analysis and the determination of water content in tobacco, etc. In calculating uncertainties, Type A of uncertainty was evaluated by the statistical analysis of a series of observation, and Type B by the information based on supplier's catalogue and/or certificated of calibration. It was shown that the main source of uncertainty was caused by the volume measurement of 1 mL and 2 mL, the purity of ammonia reference material in the preparation of standard solution, the reproducibility of analysis and the determination of water content of tobacco. The uncertainty in the addition of extraction solution, the sample weighing, the volume measurement of 50 mL and 100 mL, and the calibration curve of standard solution contributed relatively little to the overall uncertainty. The expanded uncertainty of ammonia determination in burley tobacco at $95\%$ level of confidence was $0.00997\%$.

• 한국자원식물학회지
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• 제25권6호
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• pp.707-718
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• 2012

This study was carried out in order to catalogue the folk plants of 7 counties and cities of northern region of Chungcheongbuk-do from March to October, 2011. Based on the 626 survey sheets collected from 67 residents at 17 places of 7 counties and were subsequently analysed. The identified folk plants in the northern region of Chungcheongbuk-do consisted of a total 348 taxa; 98 families, 250 genera, 298 species, 5 subspecies, 38 varieties, and 7 forms. The use by its usage were: 223 taxa; edible, 123 taxa; medicinal, 4 taxa; dye, 2 taxa; aroma, 6 taxa; spice, 32 taxa; ornamental, 11 taxa; oil, 4 taxa; starch, 22 taxa; and others, respectively, so the edible use is the highest. The most useful part was the leaf, followed by fruit and root. The consistency comparison between the scientific and the local name were the highest in the 50's and the lowest in 80's.