• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 1999년도 정기총회 및 춘계 학술발표회
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• pp.15.1-15
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• 1999

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2003년도 하계학술대회 논문집
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• pp.102-102
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• 2003

• Nuclear Engineering and Technology
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• 제52권6호
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• pp.1164-1171
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• 2020

T-junction structures play an important role in nuclear power plant systems. Research on liquid entrainment is mostly based on small-scale branch pipes (d/D ≤ 0.2) and attention paid to large-scale branch pipes (0.33 < d/D < 1) is insufficient. Accordingly, this study implements a series of experiments on the liquid entrainment of T-junction with different angles (32.2°,47.9°,62.3°,90°) through a large-scale branch (d/D = 0.675). The onset liquid entrainment is related to the gas phase Froude number Fr_g, the dimensionless gas chamber height h_b/d and the branch pipe angle 𝜃. As Fr_g increases, h_b/d also rises. With a constant h_b/d, the onset liquid entrainment changes from droplets entrainment by the gas phase to that by the rising liquid film. The steady-state liquid entrainment is related to w_3g, h/d and 𝜃. With constant w_3g and h/d, the branch quality grows as the branch angle increases. With a certain h/d, the branch quality increases, as the w_3g number increases.

• 동아시아경상학회지
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• 제8권2호
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• pp.29-41
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• 2020

Purpose - This study incorporated the success factors of bio cluster and provided the ways to utilize them for managing the performance of bio cluster. The aim of this study was to present an integrated framework for the success factors of the bio cluster by combining the literature and case studies, and to measure and manage the performance of the bio cluster. Research design, data, and methodology - This study combined the literature review with the case study. We reviewed the literature on the success factors of the bio cluster presented by existing studies. We studied some cases of how these factors are actually applied in the bio cluster also. We integrated the success factors of bio cluster based on both the literature review and the case study. Results - The success factors of the bio cluster presented in this study as an integrated framework were defined as six factors: knowledge base and expertise, industrial infrastructure, funding and investment, government support, start-up activities and innovation activities. These success factors can be measured and managed by some performance indicators of each factor. Conclusions - Through this study, we can identify the integrated success factors of the bio cluster and understand how these factors work in bio cluster. In addition, this integrated framework of success factors will be effectively utilized to measure and manage the performance of the bio cluster.

• 한국인터넷방송통신학회논문지
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• 제8권6호
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• pp.21-28
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• 2008

본 논문에서는 본사와 각 지점 간에 설치된 인터넷 사설교환기(IP PBX)의 통화지연시간을 단축하는 알고리즘을 개발하였다. 지사 PBX의 내부 메모리 내부에 주소저장 공간을 마련하고, 가장 많이 사용하는 전화주소를 저장하게 한다. 따라서 해당 IP PBX에 연결된 전화 단말기를 이용하여 원거리에 있는 IP PBX에 접속되어 있는 전화번호로 호를 시도 할 때 해당 주소를 검색하기 위하여 먼저 자신의 내부 메모리를 검색한다. 검색한 해당 전화번화가 있으면 해당 주소로 바로 전화를 가능하게 하여 본사와 설치된 IP PBX에 조회를 거치지 않게 함으로써 통화지연시간을 개선할 수 있도록 알고리즘을 개발하고 실험을 통하여 입증하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.146-148
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• 2005

The number of wind generation installations are growing substantially in Jeju, Korea. Many of these installations are significant in size and directly connected to the distribution system. In these distributed applications, it is not uncommon for the turbines to be connected near the end of a long rural distribution feeder from which end-users are served. Therefore, utility grid interconnection standards for interconnecting non-utility distributed generation systems are essential to both power system company and generation company. In this paper, it is investigated the power quality of Sungsan substation bus connected to Hangwon wind power generation farm.

• 대한건축학회논문집:계획계
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• 제35권10호
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• pp.63-70
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• 2019

The Busan branch of the former Toyo Takushoku Co. carried out the same business as a bank at the time of construction. This required an open space of long-span, which had no pillars, on the first floor where many customers frequently visited. In addition, an office space is required in the upper part, and a column is arranged so as to place a corridor in the center. It was designed with modern complex structures for space utilization and structural adaptation. As a result, scientific structural calculations of the modern era began and various structural technologies were introduced, the rationalization and value of various spatial characteristics and their structural design were analyzed from a technical historical perspective in the structure requiring long-span space. The Busan branch of the former Toyo Takushoku Co. is a complex structure with three structures. It is highly valuable as a building that tried to design its structure in a variety of spaces through calculation and introduction of new technology based on the principle of force in modern times.

• 한국문헌정보학회지
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• 제40권1호
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• pp.353-372
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• 2006

이 연구는 우리나라 공공도서관 분관 운영체제에 대한 설문조사와 주요지역 사례 조사를 통해 분관 체제의 실태와 문제점을 분석하고 효율성 증진 방안을 도출하였다. 분관의 담당 업무는 대체적으로 타당한 편이나. 분관의 유형에 대한 구분과 이에 대한 명확한 개념 정립이 시급하며, 그 유형에 따라 공립문고와 이동도서관도 개념에 포함시켜 공공도서관 시스템의 효율성을 극대화 할 필요성이 제기되었다. 공공도서관 분관은 기초자치단체 행정구역 단위로 운영하되 중앙관-분관-이동도서관-공립문고-순회문고로 시스템화하구 민간단체가 운영 주체인 새마을이동도서관이나 사립문고는 분관과 연계 운영하는 방안이 가장 바람직한 것으로 밝혀졌다. 또한 도교육청 소관의 분관은 기능 위주가 아니라 구조조정 목적으로 이루어져 왜곡 운영되고 있는 바, 시정이 필요하다.

• 한국작물학회지
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• 제27권2호
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• pp.141-146
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• 1982

Hop의 증수를 위한 재배기술의 일환으로 적심효과를 검토하고자 무적심, 1회적심, 2회적심, 3회적심의 적심방법 시험을 1979년에 실시하였고, 무적심, 5월 14일 적심(주경 3절위 신장시), 5월 19일 적심(주경 4절위 신장시), 5월 24일 적심(주경 5절위 신장시), 5월 29일 적심(주경 6절위 신장시)의 주경적심시험을 1980년에 실시하였던 바, 그 결과를 요약하면 다음과 같다. 1. 무적심에 비하여 적심회수가 거듭되거나 적심시기가 늦어질수록 영양생장기간 및 개화기가 지연되었다. 2. 주경적심처리는 무적심보다 만장과 총측지수 적었으나 측지 생육이 촉진되어 조기 적심일수록 만중이 증가되었을 뿐만 아니라, 주경 10절위 이하에서도 구화가 착생되어 착화측지수가 증가되었다. 3. 조기적심일수록 무적심에 비하여 10절위 이상 20절위 이하의 측지장이 현저히 길어져 착화측지당구화수 및 주당 구화수가 증가되어 12-43%의 증수를 가져왔다. 4. 만기적심(5월 29일 적심)은 적심 후에서 모화기까지의 일수가 짧아 무적심보다 착화측지수가 적었고, 측지장이 짧아 주당 구화수가 적었으며 100구화중도 가벼워 무적심보다 20% 감수되었다.

• 한국동물위생학회지
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• 제28권3호
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• pp.275-284
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• 2005

The present study was conducted to investigate the prevalence of Eimeria infection according to anti-coccidiosis drugs treatment in 1,300 slaughtered chickens from 130 farms in Gyeongnam, Jeonnam, Jeonbuk, Gyeongbuk and Chungnam during the period from October 2002 to August 2003. The prevalence of Eimeria infection by drug administration for treatment and prevention or non-administration was shown $71.4\%,\;82.6\%\;and\;72.3\%$, respectively, and so infection rate of chicken farms was similar independent on drug administration or not. The prevalence of Oocysts infection level of chicken farms by administrated drug for treatment was shown lower $(25.3\%)$ than for prevention $(35.4\%)$ and non-treatment $(36.2\%)$. The prevalence of Oocysts infection level by drug administration under 2 days for treatment was shown higher infection rate $(32.2\%)$ than over 3 days $(20\%)$ and also under 2 days for prevention has similar tendency of that of treatment and so, it was conclusion that administration of drug over 3 days has the effect for treatment and prevention of Eimeria infection. The prevalence of Oocysts infection level by age for prevention has various level from $48.8\%\;to\;22.9\%$ but on $22\~25$ days was shown the most higher ratio $(48.8\%)$ and on $19\~21$ days was shown the lowest rate $(22.9\%)$ among the all age groups.