한글대장경 웹 검색 시스템의 구현

구현우,선수림,박미화,이재수,이용규,이금석,홍영식,한보광 동국대학교 전자불전연구소 2007 전자불전 Vol.9 No.-

본 연구는 한글대장경 전산화 6차 사업으로 한글대장경 30책 분량을 전산화하여 검색 시스템을 구축하는데 목적이 있다. 고려대장경의 우리말 번역본인 한글대장경을 전산화하기 위해 개역된 고문헌을 입력하여 데이터베이스로 구축하고, 인터넷을 통해 그 내용을 검색할 수 있도록 한다. 한글대장경 고문헌은 확장한자, 누락문자, 특수문자 등을 포함하고 있어서, 본 연구에서는 효과적인 입력과 저장을 위해 유니코드(Unicode)를 사용하며, 유니코드로 표현하지 못하는 문자들은 이미지 폰트를 생성하여 표현한다. 데이터베이스를 구축하기 위해서 DBMS로는 MS-SQL 7.0을 사용하고, 운영체제로는 윈도우 2000 서버를, 웹 서버로는 IIS(Internet Information Server)를 사용하여 검색 시스템을 구축하였다. 또한 다양한 검색 방법을 제공하는 검색 엔진을 개발하여, 유니코드로 저장된 한글대장경 고문헌의 내용을 웹(http://ebtc.dongguk.ac.kr/)을 통해 보다 쉽게 전 세계에서 접근할 수 있도록 한다. This research aims for constructing retrieval system by digitizing thirty books quantities of Hangul Tripitaka in the 6th Hangul Tripitaka Digitization Project. For digitizing Hangul Tripitaka which is a Korean version of the Tripitaka Korean, we can input, store the retranslated archaic documents in database, and search their contents through the Internet. Because the archaic documents of Hangul Tripitaka includes extension characters of Chinese origin, missing characters and special characters, we input and store documents use Unicode and make image fonts that cannot be represented by Unicode. Also, for developing retrieval system in this research, we use MS-SQL 7.0 and IIS(Internet Information Server) on Windows 2000 Server. By developing search engine which provides variety of retrieval methods, people who concern the archaic documents in the whole world can access Hangul Tripitaka saved as Unicode using the Web.

복합재를 이용한 구조물의 균열보수 대책에 관한 연구

李晟熙,韓秀贊,韓秉基,具秉俊 弘益大學校 科學技術硏究所 1997 科學技術硏究論文集 Vol.8 No.-

Recently, composite materials have widely become available to engineers. This paper briefly explains the applications of these materials and shows how these materials can be used to repair structures with damages such as crack, notch, etc. Before the fatigue test, notched and repaired specimens with thin laminate composite are prepared. Also, test apparatus is designed to perform four point fatigue test of specimens. From the experimental result, it was found that present repair technique could be used to enhance the life of damaged structures.

九宜埋立地에서 埋立쓰레기의 分解와 混合가스 發生에 관한 硏究

李承務,李秀求 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.3

This investigation was carried out to study on the decomposition of refuses followed landfill gas generation from Kui landfill site at Seoul City, by analyzing LFG by boring test and chemical compositions of remaining refuses in the elapsed layer by open-cut, and measuring underground temperatures. From the experimental study, the following results were obtained; 1. About 66.3% of digestable organic substances in refuses have been gradually decomposed for 6 years after elapsed the landfill, where-by corresponding to 42% in the basis of amount of these organic matters at 1981, for last 1.5 years after the composition of landfill lapse in 1979. 2. The rate of refuse decomposition in the landfill site was very slow there-by generating LFG in the range of about 6 to 150ℓ/min with 56.6%(V/V) and 31.8%(V/V) in average of CH₄and CO₂ respectively. 3. The underground temperature profiles from the surface to 8m depth were almost distributed to 17℃ from 24℃, while leached by Han River water during rainy weather. 4. The chemical molecular formula was empirically derived, such as C₁₂H_(26)O_(9)N_(0.1)S_(0.02), by meaning the chemical compositions of carbon, hydrogen, nitrogen, oxygen, etc.

암석 슬러지를 이용한 건자재 개발

이필호,이구연,전철수,연규석,이윤수,인교진 강원대학교 부설 석재복합신소재 제품연구센터 2000 석재연 논문집 Vol.5 No.-

본 연구는 1993년부터 춘천시 신동면 형돌리 산 62번지 내에서 흑운모 화강암 및 편마암 암석을 원자재로 사용하여 건설기초재료인 쇄설골재 및 인공모래를 생산하는 업체로부터 제품 생산 후 발생하는 토양 스러치 케익이 연간 약 10만 입방정도 발생한다는 사실에 기초하여 석산에서 채취된 페잔토(석분)의 화학적, 물리적, 역학적 특성을 조사하여 석분의 이용 가능성을 확인하기 위한 실험으로 단위 시멘트량을 400kg, 잔골재율을 45% 그리고 물-시멘트비를 65%로 고정하고 잔골재 중 석분을ㄹ 0%, 10%, 20%, 30%, 40%, 50% 및 60%로 치환하여 제조된 콘크리트의 기초적 성질을ㄹ 시험하였다. 그 결과 석분의 치환율이 높을 수록 공기량은 증가하고 슬럼프값이 감소하였는데 이는 미세한 입자인 석분을 잔골재의 일부로 치환함으로써 비표면적이 증가하였기 때문인 것으로 사료된다. 압축강도와 휨강도는 모두 석분의 치환율이 증가할수록 압축강도와 휨강도는 다소 감소하는 경향을 나타냈으나 큰 성능차이는 보이지 않는 다는 것을 알 수 있었다. 이상의 실험을 통해 석분을 시멘트 콘크리트에 사용했을 경우 약간의 성능저하는 있지만 잔골재로의 활용이 가능하다는 것을 알 수 있었다. 그러므로 앞으로 건조수축, 균열, 크리이프 특성 및 내구성에 과한 연구가 더욱 심도있게 이루어져야 폐자원인 석분의 이용이 가능하리라 판단된다. This study aims to make cement concrete using crushed stone fines which are produced at Chuncheon city, Hyuldongri and find it's applications. According to the experimental results, when ratio of crushed stone fines was increased, air contents were increased and slump values were decreased. Also, the compressive strength and flexural strength were decreased when ration of crushed stone fines was increased. Although these strengths are decreased, the crushed stone fines can be used to construction materials because the decreased amounts are not so much.

돈사 폐수의 물리화학적 처리에 관한 연구

이수구,박상헌 서울産業大學校 1992 논문집 Vol.36 No.1

This study was performed to treat the swine wastewater from the small scale farms. As physicochemical treatment methods, coagulation, activated carbon adsorption, Fenton reagent's reaction and dewatering of sludge were applied to remove organic materials. Adding polymer Yangfloc Ycx-4 could increase effectively COD removal efficiency above 80% and the optimum dosage of polymer was 50㎎/L. In order to remove COD, powdered activated carbons were more effective than granular activated carbons and PAC absorption results could applied well to Freunich adsorption isotherm. In Fenton reagent's reaction, COD removal efficiency was low within 30%. In the chemical treatment, killing efficiencies of E. coli were 99.5% and 99.8% at pH 11 and 12, respectively. The dewaterability of sludge could be increased effectively by adding lime and cationic polymer.

섬유상 담체 종류에 따른 생물학적 오수처리 비교연구

이수구,임병란,한종옥 서울産業大學校 1994 논문집 Vol.40 No.1

This study was performed to investigate the treatability of sewage from department store by attached growth biological treatment method using several fibrous media such as Supermodule made of polyvinylidine chloride and acry fiber(FBC), ringlace made of polyvinylidine chloride(HBC) and polypropylene(PP). The pilot plant was set up in the field of K department store and four consecutive aerated reactors were packed with each media and maintained in the condition of hydraulic retention time 12 hours. Experimental results showed that the effluent BOD concentration was stable even though the influent concentration was largely fluctuated in the range of 300~900㎎/L. BOD removal efficiencies in HBC, PP and FBC systems were 90%, 87% and 94%, respectively. The influent BOD was mainly removed in the first, second and third reactors and the removal rate in the fourth reactor was the lowest due to the low concentration and low influent load. The concentration of biomass attached to fibrous media was the highest in the FBC system compared with HBC and PP systems. Total concentration of volatile solids in the FBC system was 5,900 ㎎/L which was high compared with the other media systems. The production ratios of waste sludge were 9.2, 8.45 and 7.3 gDS/㎥ of influent sewage in HBC, PP and FBC systems, respectively.

I시 H천 하구 연안일대의 저질토양 오염조사 연구

이승무,박원우,이수구,정인숙 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.2

This study was carried out to investigate the seawater and soil contaminations on the seashore near H-stream at I city. In order to do this, the collection of sampling was done at the several points, where are 4km, 500m, 100m and just down stream exit far from H-stream, with respect to their depths, respectively. And the analytical measurement was carried out to determine the degree of contaminations in terms of COD, BOD, pH, ignition loss, total phosphate, NH₃-N, heavy metals such as lead, cupper, cadmium, chromium(+6) and n-hexane extracts by the standard methods for the examination of water and wastewater. From the experimental results, the soil contaminations of seashore district near the exit of H-stream was most serious, followed the degree of seashore soil contamination at the area of 500m and 4km far from the exit of H-stream in order. Particularly, it is highly pointed that COD, total phosphate, NH₃-N and n-hexane extracts at seashore district near the exit of H-stream was measured respectively 6.55, 9.3, 5 and 2 times, compared with the degree of undersea soil contamination at the area of 4km far from the exit of H-stream thereby the nutriphication or oderly degradation be observed. Furthermore, the degree of seashore soil contamination in depth was also measured that the surface layer (5㎝) was highly contained such a contaminants, which was gradually decreased downward underground.

웨이블렛 영역에서 선형확장과 인터리빙에 의해 필터링 공격에 강인성을 갖는 영상 워터마킹

이구영,정수택,김정화 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

This paper presents an efficient technique for digital watermark robustness against filtering and scaling attack. It inserted the watermark in low frequency portion of the wavelet-transformed image and it uses from communication the interleaving method in the proposed method it applied. The Interleaving method orders a data bit row at schedule unit the rearrange. With that result in instantaneous noise when the part bit in data bit row center is lost, it the recover it does as a role. And in order watermark to do the coefficient values of low frequency domain from in transformed domain of 4 portion of original image it does and every the pixel the linearly it does and bit it expands. Experimental results demonstrate the high robustness of the method to such image degradations as Lowpass filtering, Median filtering and Rescaling transform.

섬유상 담체 접촉포기법에 의한 오수처리에 있어서 COD부하의 영향

이수구,서성조,조창호 서울産業大學校 1995 논문집 Vol.41 No.1

This investigation was carried out to study the effect of COD loading rate on the treatment of sewage form office building and department store by attached growth biological treatment method using fibrous media. Supermodule made of polyvinylidine chloride and acryl fiber was packed in the four consecutive aerated reactors with 25% packing ratio. The pilot plant was set up in the field of S office building and K department store and operated with different COD loading rate in the range of 0.55∼3.36kgCOD/m³.d. In spite of large fluctuation of influent concentration, the effluent concentrations were stable and the removal efficiencies of COD? and BOD were obtained up to 88% and 93%, respectively. In order to maintain the effluent BOD concentration within 30mg/L, COD loading rate must be controlled within 1.0 kgCOD/m³.d and F/M ratio operated within 0.21 kgBOD/kgVS.d. COD and BOD removal rates increased with COD loading rate and the removal rate in the first reactor of 4 consecutive reactors was the highest and followed in 2, 3, 4 reactor. COD removal rates in the first reactors were 1.1∼2.6 times compared with average removal rates while those of BOD removal rates were 2.5∼2.9 times with different loading rate. The relationship between removal rate and COD loading rate could be expressed as Michaelis-Menten type and the maximum removal rates of COD and BOD were determined as 0.34kgCOD?/kgVS.d and 0.59kgBOD/kgVS.d, respectively. The weight of wet biomass attached to fibrous media was in the range of 0.46∼0.86kg/m and the concentration of VS was in the range of 3,410∼5,120mg/L. The production rate of excess sludge was very low within 8gDS/m³of influent due to surface characteristics of media and self-degradation of sludge in the biofilm.

생물학적 소양의 함양을 위한 BSCS 통합 권고안과 6, 7차 교육과정 비교

구수정,김영신,김병석,이성조,정완호 한국교원대학교 과학교육연구소 2000 청람과학교육연구논총 Vol.10 No.1

본 연구에서는 BSCS 위원회가 생물학적 소양의 함양을 위하여 제시한 중등 생물 교육과정 개발 지침과 우리 나라 제6차, 제7차 교육과정을 개념 제시 형태, 하위 개념들의 내용 일치도, 개념 수의 측면에서 비교 분석하였다. 연구 결과 우리 나라 교육과정의 내용 체계에서의 상의 수준으로서의 지식 영역과 하위수준으로서의 내용 요소 부분에 제시되어 있는 개념들이 포괄성의 차이 없이 단순히 개념 나열적으로 제시되어 있는 상태라서 개념 수준간 등급화가 충분하지 못한 것으로 나타났다. 그리고 우리 나라 생물 교육과정에는 생태계, 유전과 생식, 물질대사 부분에 너무 많은 개념들이 들어 있는 것으로 나타났는데 이로부터 BSCS가 학문중심 교육 과정기에 제시했던 많은 개념들에 대해서 현 시대 흐름에 비추어 학생들의 생물학적 소양의 함양을 위해 재조정하도록 권고하면서 제시한 6개의 통합 원리들을 편중되지 않게 고르게 포하하기 위해서는 우리 나라에서도 생물교육과정에 대한 재구성 노력이 필요한 것을 알 수 있었다. 한편 생물 Ⅰ보다 생물 Ⅱ에 생물학적 소양의 함양을 위한 필수 개념들이 더 많이 제시되어 있는 것으로 분석되었는데 이는 우리 나라 제7차 교육과정의 과학 10에서 과학적 소양이, 그리고 생물 Ⅰ에서 생물학에 대한 기초 소양이 강조되고 있고, 생물 Ⅱ에서는 생물학 관련 전공 과목 이수 준비를 강조하고 있는 과목별 성격과 목표에 부합되지 않는 것이며 따라서 우리나라 교육과정에서도 각 과목별 특성을 분명히 제시 및 반영하려는 노력이 필요함을 알 수 있었다. 이상과 같은 연구 결과로부터 현재 우리 나라 과학 및 생물 교육의 중요한 목적의 하나로 설정되어 있는 학생들의 생물학적 소양의 함양을 위해서 제7차 교육과정에 의한 생물 교과서의 교수 자료 개발 및 장차 제8차 교육과정 개발에 사용할 수 있는 실제적인 지침을 마련하기 위한 구체적인 논의가 있어야 함을 시사받았다. In this study, the concept presentation form, the content coherence of sub-dimensional concepts and the number of concepts of the 6th and the 7th Korean curriculum were analyzed comparing the guide to developing the secondary biology curricula to develop biological literacy with BSCS. According to the result, the discrimination between concept levels in the frame of contents of the Korean curricula is insufficient, because each of concepts presented in the knowledge domain as upper level and sub-dimensional concept elements as lower level are simply arrayed. Considering too much concepts of ecosystem, genetics, reproduction and metabolism, there should be an effort to reform the biological curriculum to include concepts evenly, not in the biased state, to reflect all the 6 unifying principles by BSCS for developing students' biological literacy. Finally there should be an effort to reflect the characteristics of each subjects concretely among Science 10, Biology Ⅰ and Biology Ⅱ in the 7th curriculum considering the result that essential concepts to develop biological literacy are presented more in some principles of Biology Ⅱ than Biology Ⅰ. Thinking the results of the present study, concrete discussions should be made to set up the standard reference about biological literacy and to present essential concepts for teaching and learning to develop it in the process of biology textbook development for meeting the 7th Korean curriculum and in the development of 8th Korean curriculum in advance.