효율적인 저장을 위한 XML 문서의 통합기법

이범식,황병언 가톨릭대학교 자연과학연구소 2005 자연과학논문집 Vol.26 No.-

XML과 관련된 애플리케이션의 개발이 활성화되면서, 관리해야 하는 XML 문서의 수가 크게 증가하였다. 이에 따라 의미나 구조적으로 많은 유사성을 지니는 XML 문서들을 효율적으로 저장하고 검색하기 위한 기법의 연구가 요구된다. 본 연구에서는 의미 및 구조적으로 유사성을 가지는 여러 XML 문서들을 통합하는 기법을 제안한다. 이 방법은 같은 DTD나 XML Schema를 가지는 경우와 다른 DTD나 XML Schema를 가지는 경우를 모두 고려한다. 또한 특별한 구조적 정보를 가지지 않는 XML 문서도 이들과 마찬가지로 처리하여, 다양한 XML 문서들에 대한 통합이 가능하도록 한다. 이러한 통합 기법은 중복되는 엘리먼트나 애트리뷰트에 대한 저장 공간의 낭비를 최소화한다. 그리고 서로 관련 있는 여러 XML 문서의 부분들을 디스크상의 페이지 내에 서로 가까이 저장할 수 있기 때문에, 사용자의 일반적인 질의에 대해 효율적이고 빠른 검색 결과를 유도할 수 있고, I/O 횟수를 줄임으로써 그에 따른 오버헤드를 줄일 수 있다는 장점을 가진다. As enlarging of developing applications that related with XML, the XML documents to manage increased in quantity. Accordingly, it is requested to research for storing and searching efficiently XML documents which have similar in meaning or structure. In this paper, we suggest the combining strategy of XML documents with meaning and structural similarity. This strategy considers whether XML documents with same XML schema or not. The XML documents without special information about their structure would be processed also, so it makes possible to combine of variety of XML documents. Proposed strategy minimizes waste of storing space for duplications of elements or attributes. Since it stores related XML documents closely in same pages on disk, so it has advantages not only to derive searching result fast and effective for general query from users, but also to cut down overhead by reducing I/O frequency.

크랙幅이 壓縮破壞强度에 미치는 影響

文秉秀,黃秀喆,吳範錫,趙鎭境 충북대학교 산업과학기술연구소 2002 산업과학기술연구 논문집 Vol.16 No.1

Under the compressive loads, tensile stress fields are possibly induced according to the boundary condition of compressed body. At the crack tip, the possibility of occurance of tensile stress fields are strong even under the compressive loads. In this paper, the fracturing behavior of brittle materials containing crack are investigated and the compressive strength affected by crack clearance are inspected theoretically and experimentally. Upon the theoretical and experimental results, it is found that compressive strength is decreased as the crack clearance is increased.

해양침적쓰레기 정화관리지수의 개발 및 적용

황석범(Suk-Bum Hwang),김창원(Chang-Won Kim),이권욱(Kwon-Uk Lee),박재문(Jae Moon Park),윤홍주(Hong Joo Yoon) 한국해양환경·에너지학회 2015 한국해양환경·에너지학회 학술대회논문집 Vol.2015 No.11

파력발전 장치 계통연계를 위한 해저케이블 보호설비에 대한 연구

황석범(Suk-Bum Hwang),안승환(Seung-Hwan Ahn),박경원(Kyung-Won Park),도정훈(Jeong-Hoon Do),유황진(Hwang-Jin Ryu) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

본 연구는 제주 서측 차귀도 주변해역에 설치 예정인 파력발전 장치 계통연계를 위한 보호설비의 선정을 위하여 MBES(multi beam echo sounder), SBES(sigle beam echo sounder) 및 잠수조사를 수행하였으며, 대상해역의 해저케이블에 대한 위해요소 분석을 통하여 적절한 보호설비를 제안하였다. MBES, SBES 및 잠수조사 결과, 대상해역 주변은 암반이 우세하게 분포하였으며 파력발전 장치 설치예정 주변역은 일부 사질 구간이 존재하였다. 또한 대상해역의 유의 파고 분포(Hs)는 파력발전 장치 주변역에서 7.0 m 파고 분포를 나타내었으며, 파향 분포는 파력발전 장치 및 수심의 영향으로 인하여 굴절 및 회절 현상이 나타났다. 따라서 해저케이블 보호설비의 선정은 대상해역의 해양환경 특성 및 위해요소를 정확히 판단하여 선정되어야 하며, 본 연구해역은 돌을 쌓거나 되메우는 형태의 보호설비가 적합하다. To suggest of the submarine cable protection facility for the wave power generation plant around Chagwi-do in western sea of Jeju, we have investigated marine survey such as MBES(multi beam echo sounder), SBES(sigle beam echo sounder) and dive. We have proposed proper protection facilities through to analysis damage factors of the submarine cable. As a result of the marine survey, bedrocks are spread out both the study area and vicinity of the wave power generation plant. However, distribution of sand has revealed the area of some part on seabed. Also, distribution of significant wave height (Hs) in study area has occurred 7.0 m and distribution of wave direction has come out the refraction and diffraction effect on the wave power generation plant and water depth. Consequently, the submarine cable protection facility should have selected to consider marine characteristics and damage factors. It is adequate that protection facilities of rock dumping and backfilling in this study.

소리도 ~ 욕지도 해역의 ADCP 관측에 의한 조류 특성

황석범(Suk-Bum Hwang),추효상(Hyo-Sang Choo),박상권(Sang-Kwon Park) 한국해양환경·에너지학회 2004 한국해양환경공학회 학술대회논문집 Vol.2004 No.-

In order to clarify detailed current structures from Sori Island to Yokji Island, ADCP measurements were carried out in May, June and October in 2004 together with CTD measurements. We discussed the characteristics of tidal flows and calculated the volume transports of tidal flows on the vertical section between Sori Island And Yokji Island. Across the section, the southward component of the volume transports averaged over 24.8 hours were dominant on the upper layer from 3m depth to 15m depth and its northward component were dominant on the lower layer from 20m to the bottom. There were net Southward volume transports near Sori Island and net northward volume transports near Yokji Island along the whole water column. The vertical profiles of temperature and salinity also show the analogous distributions of volume transports.

파력 발전 장치 계통연계를 위한 해저케이블 보호설비에 대한 연구

황석범(Suk-Bum Hwang),안승환(Seung-Hwan Ahn),박경원(Kyung-Won Park),도정훈(Jeong-Hoon Do),유황진(Hwang-Jin Ryu) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5

본 연구는 제주 서측 차귀도 주변해역에 설치 예정인 파력발전 장치 계통연계를 위한 보호설비의 선정을 위하여 MBES(multi beam echo sounder), SBES(sigle beam echo sounder) 및 잠수조사를 수행하였으며, 대상해역의 해저케이블에 대한 위해요소 분석을 통하여 적절한 보호설비를 제안하였다. MBES, SBES 및 잠수조사 결과, 대상해역 주변은 암반이 우세하게 분포하였으며 파력발전 장치 설치예정 주변역은 일부 사질 구간이 존재하였다. 또한 대상해역의 유의 파고 분포(Hs)는 파력 발전 장치 주변역에서 7.0 m 파고 분포를 나타내었으며, 파향 분포는 파력발전 장치 및 수심의 영향으로 인하여 굴절 및 회절 현상이 나타났다. 따라서 해저케이블 보호설비의 선정은 대상해역의 해양환경 특성 및 위해요소를 정확히 판단하여 선정되어야 하며, 본 연구해역은 돌을 쌓거나 되메우는 형태의 보호설비가 적합하다. To suggest of the submarine cable protection facility for the wave power generation plant around Chagwi-do in western sea of Jeju, we have investigated marine survey such as MBES (multi beam echo sounder), SBES (sigle beam echo sounder) and dive. We have proposed proper protection facilities through to analysis damage factors of the submarine cable. As a result of the marine survey, bedrocks are spread out both the study area and vicinity of the wave power generation plant. However, distribution of sand has revealed the area of some part on seabed Also, distribution of significant wave height (Hs) in study area has occurred 7,0 m and distribution of wave direction has come out the refraction and diffraction effect on the wave power generation plant and water depth. Consequently, the submarine cable protection facility should have selected to consider marine characteristics and damage factors. It is adequate that protection facilities of rock dumping and backfilling in this study.

National Surveillance and Control Measures of Brucellosis in Korea

Suk chan Jung,Moon Her,Dong hee Cho,Yun Sang Cho,In yeong Hwang,Chang bum Yang 대한수의학회 2009 대한수의학회 학술대회발표집 Vol.2009 No.-

A New Short Stem Peanut Cultivar, “Sangpyeong” with Lodging Resistant and High-Yielding

Suk-Bok Pae,정찬식,이명희,안영섭,서덕영,김욱한,정영근,Yu-Young Lee,Kang-Bo Shim,Chung-Dong Hwang,Ho-Young Kim,Chang-Hwan Park,Bum-Yeol Ryu,Gyu-Hwan Choi 한국육종학회 2006 한국육종학회지 Vol.38 No.5

A new peanut cultivar “Sangpyeong” (Arachis hypogaea ssp. hypogaea L.)was developed at the Yeongnam Agricul-and the very short stem cultivar “Satonoca”. “Sangpyeong” with Virginia plant type has more branch number with early floweringand ellipse-shaped large kernel, compared with the check cultivar. Each pod has two grains with brown testa and 100 seed weightwas 89g in the regional yield trials (RYT). This cultivar also showed more resistance to early and late leaf spots and web blotchcompared with the check one. Especially it has resistance to lodging owing to short stem. In the regional yield trials, “Sang-

Crack 전파기구에 관한 기초적 연구(제1보) : 이물질의 위치가 응력확대계수에 미치는 영향 The Effect of the Location of the Heterogeneous Materials on the Stress Intensity Factor

황수철,오범석,국정한 충북대학교 건설기술연구소 1983 建設技術論文集 Vol.2 No.1

The holes or heterogeneous materials are possibly included landomly during the manufacturing processes of materials. They can influence at crack tip according to their location. 1n some cases the fracture process can be characterized by the interation and connection of the holes. In this paper, The stress insensity factors of the center crack are analyzed when it is surrounded by the holes or heterogeneous materials which are symmetrically distributed as the results of these analyses, it is suggestes that, 1) The values of stress intensity factors of the center crack are influenced greatly by the locations of the holes or heterogeneous materials. 2) The holes influence at the crack tip greater than the heterogeneous materials and heterogeneous materials influence greater at the crack tip as their young's modulus decrease.

팽이버섯으로부터 Lectin 의 정제와 특성

황세영,홍범식,손승렬,김형석 한국농화학회 1999 Applied Biological Chemistry (Appl Biol Chem) Vol.42 No.4

Two Lectins, designated FVL-1 and FVL-2, were isolated and purified from the fruiting bodies of edible mushroom Flammulina veluripes using ammonium sulfate fractionation, ethanol treatment, DEAE-TOYPEARL ion-exchange column chromatography, and TSK-Gel HW-55F column chromatography. Specific activity increased 18 folds for FVL-1 and 7.9 folds for FVL-2 from ethanol treated sample. SDS-PAGE of FVL-1 and FVL-2 gave apparent molecular mass of 10.6 kDa and 37 kDa, respectively. FVL-2 agglutinated all type of human erythrocytes (A, B, AB, and O). However, FVL-1 agglutinated more human erythrocyte type O than type A, B, and AB. The hemagglutination activities of the FVL-1 were effectively inhibited by bovine submaxillary and porcine stomach mucins(BSM and PSM), fetuin, asialofetuin and cations, such as Cu^(2+), Mg^(2+), Ca^(2+), Mn^(2+) and Fe^(2+). However, FVL-2 was not inhibited by any cations. The hemagglutination activities of the two lectins were not inhibited by the sugar, such as lactose, galactose and sugar derivatives. FVL-1 and FVL-2 were stable at pH 5∼11 and pH 4∼7, respectively. FVL-1 was stable below 55℃ and FVL-2 was below 45℃.