• Journal of the Korean association of regional geographers
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• v.14 no.2
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• pp.141-158
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• 2008

The goal of this paper is to analyze Korean migration to the Russian Far East(RFE) from the perspective of transnationalism. The analysis suggests that the Korean migrants could have constructed their transnational identities using the following practices: religious ritual, language uses, collective remittances, ethnic businesses, immigrant newspapers, and immigrant associations. In particular, the Korean migrants could have retained transnational interconnection between the places of origin and destination even without the process of globalization, which is regarded as an inevitable incentive to transnationalism in the literature. The Korean case indicates that the contextual changes in the sending and receiving countries, for instance, the establishment of a Japanese protectorate over Korea and the Russian Revolution, significantly facilitated the formation of transnational relationships among the Korean immigrants.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.6 no.3
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• pp.41-56
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• 1996

Database servers that are used to provide multimedia information services in World Wide Web(WWW) environment have to support the access control mechanism that allows authorized users to access the constructed databases. In this paper, we define an authorization model as well as authorization policies to enforce the proper access control on databases in the BADA-III object-oriented database server and propose an access evaluation algorithm. Also we implement this model and the algorithm in the BADA-III database server. Considering the service environment of the WWW, we expect that database service providers can simply and effectively protect their data using the proposed model.

• Korean Journal of Heritage: History & Science
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• v.54 no.1
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• pp.100-119
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• 2021

This paper has been written to verify the existing theory that districts occurred independently in various parts of the world, including the Korean Peninsula. Song Giho (2006) claims that the origin of the Gudle, is an example of polygenism that occurred in various areas in the world, including the Korean peninsula. This argument has been corroborated by a large number of researchers. However, it is difficult to understand the lineage of Gudle and its process of development, if a theory of polygenism is continued to be taken into account. The place which is targetet by this theory is the North-West area of the Korean peninsula, south of Primorsky Krai, and in the northern area of Zabaikal-Mongolia. This means that these areas developed independently because they were far from each other and had no direct cultural relationship. However, the structure of Gudle, shape, and assemblages of earthenware it cannot be explained by polygenism, as they are the same in every place. Furthermore, it is also questionable as to the timing and region of emergence of the culture in East Asia over a limited time frame of 3-2 BC. Gudle are formed by furnaces with roofs and walls, Gorae, which saves heat, and it has smoke ventilation that draws smoke out. Therefore, the Gudle is not a structure that anyone can make without advanced technical understanding. So far, the only facility with furnaces and smoke ventilation that appear before the Gudle is Buttumak. Thus, the Gudle is likely to have been invented in the place where Buttumak were used. The area as known for the origin of Gudle was observed to verify the existence of the Buttumak's structure, but none of these facilities were found. The Gudle suddenly appeared within a new culture that had never existed before. That means that none of the three places had the conditions under which the Gudle could be invented, so it must have been introduced from outside. In conclusion, the three places that I mentioned above are not the origin of Gudle. So, the origin of Gudle has to be found elsewhere.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.66_67
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• 2009

전력거래소는 전력IT 국가전략과제 중 하나인 한국형 에너지관리 시스템(Korean Energy Management System)개발[1]의 총괄을 담당하고 있으며, KEMS의 각 개발단계인 Baseline, Prototype, Fullscale에서의 단위, 실증, 통합 등의 모든 시험을 주관한다. KEMS는 세부 5개 과제의 여러 산학연 기관들이 참여하는 대규모 프로젝트로 통합된 시스템의 시험관리가 매우 중요하다. 전력거래소에서 사용하는 통합시험관리시스템(Total Project Administration System)은 KEMS의 이러한 통합된 시험관리를 웹에서 가능하도록 해주는 시스템으로, 시험 진행 중 발생되는 Variance를 발행하고, 그에 대한 보완계획을 입력하고 해결여부를 추적하는 것이 주된 기능이다. 이 논문에서는 현재 버전 2.0까지 개발되어 사용되고 있는 TOPAS시스템과 KEMS개발에서의 시험관리 방법 등에 대하여 살펴보고자 한다.

• Bulletin of the Korea Photovoltaic Society
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• v.7 no.2
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• pp.22-28
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• 2021

최근 잇따라 발생하고 있는 이상 기후로 탄소 중립에 대한 관심이 높아지고 있다. 우리나라 정부도 신재생에너지 중심의 에너지 전환과 수소 경제 활성화에 대한 정책을 연일 발표하면서 많은 국책 과제들이 추진되고 있다. 잉여 재생에너지를 수소 가스로 변환하여 저장했다가 필요할 때 다시 전기로 사용하거나, 수소 가스 자체를 타 산업에 활용할 수 있게 해주는 핵심 기술이 수전해 기술이다. 다양한 수전해 기술 중에 PEM 수전해 기술은 재생에너지의 빠른 변동에 신속하게 대응할 수 있어 재생에너지 확산과 더불어 최근 높은 관심을 받고 있는 기술이다. 그러나 비싼 촉매와 내부식성이 필요한 핵심 부품들이 국산화 되어 있지 않아 장치의 가격이 높은 상황이다. 그에 따라 아직은 수전해를 통해 생산된 수소 단가가 다른 기술을 통해 생산된 수소들 보다 가격이 높아 상업화가 더디게 진행되고 있다. 그러나 정밀 가공, 열처리, 코팅 등의 뿌리 기술들을 이용하면 PEM 수전해기의 핵심 부품인 bipolar plate나 end plate, 분리판 등을 국산화 하여 수소 생산 단가를 낮출 수 있는 여지는 충분하다. 탄소 중립에 반드시 필요한 그린 수소가 가격 경쟁력을 확보할 수 있도록 산업간 기술 협력이 절실한 시점이다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.439-442
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• 2021

가상현실은 제4차 산업혁명 시대 신산업으로 꼽히는 기술 중 하나이다. 본 연구에서는 가상현실 공간설계의 교육적 가능성을 확인하고 교육적 활용을 위한 툴로서 3D 컴퓨터 그래픽 제작 소프트웨어인 블렌더와 3D 객체를 웹에서 쉽게 렌더링해주는 자바스크립트 라이브러리 three.js를 이용한 건축 내외장재 시뮬레이션 프로그램의 프로토타입을 개발 및 제안하였다. 본 연구에서 제안한 방식으로 학습자들은 자유도 높은 가상공간 공간설계가 가능하여 조형놀이의 형태로 학습을 즐길 수 있을 것으로 기대된다. 후속 연구로는 본 연구에서 구현한 프로토타입과 같은 방식으로 가상현실 공간설계 시뮬레이션을 할 수 있는 교육 프로그램 개발 및 효과성 검토를 실시할 것을 제안하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.147-148
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• 2023

실내 내비게이션 기술은 시설물 구조에 익숙하지 않은 방문자의 길 안내뿐만 아니라 무인 이동체들의 위치를 파악하는 데 중요한 역할을 한다. 본 논문에서는 UWB 기술을 활용하여 타깃 영역 안에서의 좌표를 추출하고 이를 활용하여 길 안내를 해주는 앱을 개발하였다. 개발된 앱은 보정 기법을 통해 사용자의 실제 위치와 지도 위에 표시되는 위치 사이의 오차를 최소화하였다.

• Journal of the Korean Society for Library and Information Science
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• v.58 no.1
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• pp.199-224
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• 2024

Due to the challenging physical access of data and the abstraction of the old map, the study of the old map, which is owned by overseas collections, is limited. Therefore, it is necessary to include more detailed and professional characteristics in the bibliography or description elements, and to provide information that is helpful for the study of the old map through many ways. In this study, the elements of the old map based upon the system of the Haejushinbon were analyzed and added to the description elements of the old map for studying the Korean old map system. Fifty six description elements in 8 areas from the analysis were applied to 「Yeongyeondo」 in the French National Library, a major old map located overseas that was not well known in Korea. In conclusion, additional description elements of the old map were proposed to enhance accessibility and utilization of old map research.

• Journal of architectural history
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• v.13 no.4 s.40
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• pp.19-34
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• 2004

This study examines the dwellings of the Korean diaspora in Maritime Provinces of Russia, and Kazakhstan and Uzbekistan of Central Asia to find the gist of the residence transformed as Korean traditional residence culture to accept Russian foreign culture. Through the examination, transformation process of the dwellings of the Korean diaspora was found as follows: - 1st Period(1864-1937): The Korean diaspora who Immigrated to Maritime Provinces of Russia built traditional houses of Korean style and few of them lived in Russian style houses. - 2nd Period(1937-1955): The Koreans who immigrated to Central Asia from Maritime Provinces under compulsion built 'ground house' by digging the earth and installed gudeul which is a traditional Korean heating system and roofed with reed. - 3rd period(1955-1991): The Koreans built straight lined '-' shape houses with two or three rooms wherein most of them were installed with gudeul to heat the room. Around the 1940s as they economically got well, the Koreans started to build houses with Russian style with one or two rooms with gudeul or a separate building with gudeul. - 4th period(1991-present): Houses of the 3rd period are still used by being enlarged or remodeled with less use of gudeul which is well reflected on Ujeong-maul village in Russia Maritime Provinces. As can be found above, the dwellings of the Korean diaspora in Russia Maritime Provinces and Central Asia are on the process of being transformed into Russian style to adapt to Russian culture.

• Journal of Korea Water Resources Association
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• v.35 no.6
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• pp.807-816
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• 2002

The purpose of the present study was to evaluate the changes of flow duration characteristics of a large river basin due to construction of a dam. The changes of water surface are quantified from remote sensing film taken before and after dam construction. Gongiu gauging station was selected to analyze the changes of flow duration, and annual exceedance series of Gongju and Kyuam gauging station were selected to estimate the changes of flood quantile before and after dam construction. From the analysing results, it was found that the construction of dam contributes to make new duration stable and to decrease flood flow. In conclusion, it was confirmed that the construction of the dam is useful for water supply and flood prevention.