• The Journal of Engineering Research
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• v.6 no.1
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• pp.15-27
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• 2004

The first aim of mass product of glass in Automatic bottle glass industry is to decrease the cost and to increase the quality. Second, the cullet is how widely used to save the energy and reducing of ecomaterials. However the physical and chemical properties of Soda-lime glass would be come true at the lower than 2% $Al_2 O_3$. Unfortunately the $Al_2 O_3$ contents of domestic silica is greater than 4% Since small glass class than 200ml bottle is made in domestic silica the producting efficiency would be decreased due to the defect such as cord, knot, devitrite, pore etc. There are many problems such as devitrifiacation and deteriorated effect on production in glass industry became of increasing of plate glass cullet. It is tried to solve these kinds of problems using various analysing methods in this experiments.

• Tunnel and Underground Space
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• v.28 no.4
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• pp.293-303
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• 2018

Monitoring is the act of collecting and analyzing accurate engineering information using various methods and instruments. The purposes of the monitoring are design verification, construction management, quality control, safety management, and diagnose of structure etc.. The diagnose evaluation of the geotechnical structures corresponds to the confirmation of the structural performance. It is aimed to judge the soundness of geotechnical structures considering the degree of damage due to the environmental change and elapsed time. Recently, microseismicity, which is widely known in Korea, can be used for safety management and diagnoses of structure as it detects the micro-damage without disturbance of the structure. This report provides guideline on the procedure for assessing an underground oil storage cavern using microseismic monitoring techniques. Guidelines cover the selection of monitoring systems, sensor array, sensor installation and operation of systems, and interpretation.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.6 no.2
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• pp.111-120
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• 1986

Steel frame structures are widely used in construction because of their efficient strength and rigidity and considered proper cases for design and analysis using concept of plastic behavior. The purpose of plastic analysis is to determine the collapse load of a structure when the plastic moments of its members are given, and optimal plastic design is to compute the plastic moments of the members that minimize total structural weight. In this paper, the plastic analysis and optimal design are performed by using the static approach and solved by the simplex method. From the result of the analysis the solutions by this study show more efficiency in calculations. Also, the structural weight solved by the simplex method in case of two story frame is proved more economical than the one using the elastic design around 24%.

• Journal of Korean Society of Archives and Records Management
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• v.11 no.2
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• pp.33-55
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• 2011

The purpose of this study is to suggest EAD mandatory elements to share finding aids among the Archival Institutions of Korea. Three foreign EAD best practices for case studies: the EAD Best Practice at the Library of Congress(2008), the RLG Best Practice Guidelines for Encoded Archival Description(2002), and the OAC Best Practice Guidelines for Encoded Archival Description (2005) were analyzed. In addition, the Archival Description Rules(2008) as the data content standard of Korea and the descriptive elements which are were being used at Archival Institutions of Korea were analyzed. Based upon the results of comparisons among EAD elements, in-depth interviews were performed to investigate which EAD elements should be included in finding aids as a matter of exchange format. Based upon the literature review, case studies, and interviews, the rules and EAD elements for the archival institutions in Korea were designed and suggested.

• Journal of Korean Society of Archives and Records Management
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• v.13 no.2
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• pp.201-225
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• 2013

This study aims to investigate services of presidential archives in Korea for users who utilize holdings of the archives for scholarly purposes, as well as to examine users' perception of the services. For these purposes, the study analyzed the content of 13 U.S. presidential libraries' Web sites in terms of their research services. In addition, it examined the content of a Korean presidential archives' Web site regarding its research services. Telephone interviews of three staff members of the presidential archives were conducted to better understand the services. With this, three users who have written research papers by using presidential records were interviewed by telephone. It was found that federated search services, access by subjects, and related records of search results were considered necessary by users. A variety of digitized records should be provided online and the services needed should be changed from mere processing of FOIA requests to archival reference services to meet users' needs. Congruently, the presidential archives should provide specialized services to offer records relevant to users' research interests and to provide the compilation of selected records crucial for research.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.317-317
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• 2015

강이나 하천에 이수 및 치수의 목적으로 소규모 댐이나 보 등의 수리구조물을 설치한다. 수리구조물의 상하류부에는 하천 하상의 극심한 침식인 국부세굴현상을 방지하여 수리구조물의 안정성을 확보하기 위해 하상보호구조물을 설치하는데, 특히 하류부에 설치하는 하상보호구조물에는 크게, 다양한 형식과 크기의 물받이공, 에너지 감세공, 그리고 끝턱구조물 등이 이에 속한다. 지금까지 국내 외 수리구조물 설계지침에서는 하상보호공의 적절한 길이규모를 산정하기 위한 다양한 공식이 개발 및 적용되었지만, 최근 들어 다양한 목적을 위해 복잡해진 수리구조물의 형식과 다양한 운영방식에 따른 수리학적 분석내용이 적절하게 반영되지 않은 경험공식이 대부분 적용되었다. 따라서 예상보다 매우 큰 하상유실이 발생 하여, 하상보호구조물의 설치역할을 제대로 수행하지 못하고 오히려 수리구조물의 안정성에 위협을 주는 주요한 요인이 되었다. 그리고 최근 국내에는 4 대강 유역에 16개 중 대규모의 다목적 보가 설치되었으나 앞서 언급한 바와 같이 미흡한 설계지침을 기반으로 설치된 보 및 하상보호구조물의 기능이 저하되어 극심한 세굴현상이 발생하였다. 또한 이를 보강하기 위한 추가적인 공사 등으로 경제적인 손실을 야기하였다. 반면 외국의 최근 설계지침에는 하상보호구조물 하류부에서 발생하는 평형최대세굴심의 규모를 고려하거나 흐름 및 난류분포를 고려한 수리학적 분석이 반영되어 있지만 국내 설계지침에는 전무한 실정이다. 따라서 본 연구에서는 기존 국내 설계지침의 한계를 조사하고 현재 외국에서 적절하게 제안되어 적용 중인 하상보호구조물 설계지침을 검토하였다. 특히 수리학적 거동특성과 유사분포 특성이 고려된 최대세굴심 산정공식과 설계지침을 검토하였고, 평형상태에 도달한 세굴공 내에서의 수리학적 특성을 고려하여 하상보호구조물의 길이를 적절히 산정할 수 있는 기존 연구결과를 토대로, 하상보호구조물 길이 산정공식을 제안하였다. 본 연구에서 검토된 외국 설계지침과 함께 수리학적 거동특성이 고려된 하상보호구조물의 길이 산정공식은, 향후 수리구조물의 안정성 확보를 위한 하상보호구조물의 설계에 반영될 필요가 있으며, 이를 통해 수리구조물의 효율적이고 경제적인 유지관리를 위해 적절히 활용될 수 있다.

• Journal of Korean Society of Archives and Records Management
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• v.21 no.1
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• pp.211-230
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• 2021

This study aims to design folk song metadata based on the OAIS reference model for the folk songs' preservation and permanent use. Thus, the folk songs' general characteristics were investigated by researching literature and related technical standards. The type of records, the methods and standards for long-term storage of records, OAIS reference models, and each package's metadata elements were identified through opinions from the popular songs' creators and researchers. The results awere that first, folk songs were created for social transformation, serving as a cultural heritage different from popular songs given their noncommercial quality. Second, the types of folk song records were identified, and the long-term preservation system suitable for the types of records was based on the OAIS reference model. Third, the metadata were edited, and the OIS reference model was applied such that respect was given to the folk songs' characteristics, context, and original order. Fourth and last, information package metadata elements matching the folk songs' records were derived and applied to the representative Korean folk song, "The March for Being."

• Water for future
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• v.55 no.6
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• pp.52-60
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• 2022

• Water for future
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• v.55 no.1
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• pp.45-53
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• 2022

• Korean Architects
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• no.10 s.390
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• pp.19-27
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• 2001

한국건축문화대상은 '역사의 그릇'인 오늘의 건축물을 발굴하여 이시대 건축문화의 표상으로 삼음으로써 우리나라 건축문화 창달에 기여함을 목적으로 제정되었다. 환경과 조화를 이루고 인간이 중시된 건축물과 그 주인공을 찾아 격려함은 물론 일반인과 신인, 학생에 이르기까지 부문별 참가 대상 폭을 넓힘으로써 건축문화에 대한 저변확대를 도모하고 우수한 건축물이 탄생될 수 있는 사회여건조성에 최선을 다하고자 제정된 한국건축문화대상은 이 시대의 진정한 건축문화 발전의 디딤돌이 되고자 한다.