12M의 고해상도 360° 카메라를 사용한 주차장의 14면 주차 상태 판단 프로그램

이영지(Young-Ji Lee),이희열(Hee-Yeol Lee),고태영(Tae-Young Ko),곽동훈(Dong-Hoon Kwak),김재형(Jae-Hyung Kim),김주호(Joo-Ho Kim),오승진,이태윤(Tae-Yoon Lee),박상민(Sang-Min Park),이승호(Seung-Ho Lee) 대한전자공학회 2019 대한전자공학회 학술대회 Vol.2019 No.6

In this paper, we propose a program to identify 14 parking status in a parking lot using a high resolution 360° camera of 12M. The proposed program consists of three steps: Match with plane image, parking area detection algorithm, and discrimination of parking using learning method. Tests on a model car to evaluate the program to identify 14 parking status in a parking lot using a high-resolution 360° camera of 12M showed 100% accuracy for both parking and double parking. Therefore, the effectiveness of a program to identify 14 parking status in a parking lot using a high-resolution 360° camera of 12M proposed in this paper has been proved.

방향족 화합물의 할로 메칠화 반응

박정서,김신종,백운필,이현주,송윤석,장정민 明知大學校 自然科學硏究所 1997 자연과학논문집 Vol.15 No.-

Biphenyl의 para position에 methylene group을 도입 시키는 방법으로 paraformaldehyde와 dimethylamine을 반응시켜 Mannich Base인 (1,1'-biphenyl-4,4'-dimethyl)-dimethli amine을 합성해 보았으나, 전혀 반응이 진행되지 않았다. 즉 , Biphenyl에 강한 activating group이 없으므로 Mannich Base을 사용한 방법은 효과적이 못된다. 따라서, 다른 방법으로 biphenyl에 bromomethylation을 진행 시켜서, 두 개의 methylene group을 도입시켰다. Bromomethylation은 다음과 같이 사용하는 시약 및 실험 방법 등을 고려하여 3가지 방법으로 시도 하였다. 1)1,3,5-trioxane + HBr in AcOH + paraformaldehyde 사용법, 2)Hbr in AcOH + paraformaldehyde 사용법, 3) NaBr + H₂SO₄+paraformaldehyde 사용법, 이상의 3가지 방법 중에서 NaBr+ H₂SO₄+ paraformaldehyde 사용법이 가장 좋은 결과를 얻었다. 이러한 system에서 반응을 진행시킨 결과 69% 의 높은 수율 (87%의 purity)로 4,4'-dibromomethylbiphenyl 합성에 성공할 수 있었다. The synthetic method for the induction of methylene group on the para position of arenes is of importance. Since the weak activation effect of phenyl group on the electrophilic substitution reaction, the induction of methylene group by way of Mannich base using paraformaldehyde and dimethylamine was unsuccessful. It was found that halomethylation of byphenyl is only the way for the preparation of di-p-methylenebiphenyl. Especially, bromomethylation was turn out to be more reliable synthetic method than chloromethylation. Herein, we developed 3 protocols for the synthesis of 4,4'-dibromomethylbiphenyl. In addition, the best result was obtained using NaBr + H₂SO₄paraformaldehyde protocol in 69% yield.

산업폐기물인 폐주물사를 혼입한 콘크리트의 최적배합설계

박재선,김태경,백민경,이주형,윤경구,김남윤 강원대학교 석재복합신소재제품연구센터 1997 석재연 논문집 Vol.2 No.-

산업폐기물인 폐주물사를 재활용하여 에너지 절감과 환경오염효과를 얻을 수 있다. 반요인실험법을 사용하여 폐주물사를 잔골재에 일정비율 치환한 콘크리트의 최적배합설계 제시를 위한 예비실험에서 물-시멘트비, 폐주물사의 잔골재 치환율, 잔골재율, 슬럼프와 같은 주요변수와 변수사이의 2차상호작용을 파악하였다. 예비실험결과 폐주물사의 잔골재치환율을 70%까지 실시하였을 때 폐주물사를 혼입한 콘크리트의 강도발현에 가장 중요한 변수는 물-시멘트비로 분석되었고 폐주물사의 잔골재치환율은 거의 영향이 없는 것으로 분석되어 폐주물사를 콘크리트의 잔골재로 대체할 수 있음을 알 수 있었다. 각 변수의 2차상호작용에서는 폐주물사의 잔골재 치환율과 잔골재율의 상관관계가 콘크리트의 강도발현에 가장 큰 영향을 미치는 것으로 나타났다. 목표압축강도에 대한 최적배합조건을 폐주물사의 잔골재 치환율에 따라 물-시멘트비, 잔골재율에 대해 제시하였다. The waste foundry sand might be recycled in concrete, saving energy and protect-ing environment. An half- factorial experiments were performed with the primarary variable such as water- cement raito, waste foundry sand substitution ratio, fine agg-regate ratio and slump as a preliminary study for optimum mix design of concrete. The preliminary study show that the water- cement ratio is the most important factor to the concrete strength, followed by slump. The substitute of waste foundry sand up to 70% has little infulence, indicating that it can substitute the fine aggregate without damaging the Concrete strength. The interaction between waste foundry sand substitution ratio and fine aggregate ratio was most significant to the concrete strength among the 2-way interaction variable. Only compressive strength affect to the formation of optimum mix design area as target compressive strengh becomes bigger. Optimum mix designs of concrete incorporating waste foundry sand, satisfying the target responses, were proposed in terms of waste foundry sand substitution ratio, water cement ratio and fine aggregate ratio.

3-Phenyl-1-(2-furyl)propenone의 반응에 관한 이론적 연구

박해윤,맹주양 순천향대학교 1994 논문집 Vol.17 No.3

3-Phenyl-l-(2-furyl) propenone Was prepared by the condensation reactions of acetylfuran with benzaldehyde. The reactivity of 3-phenyl-l- (2-furyl) propenone has been studied by CNDO calculation for electrostatic potential energy surface, electric charge, geometric parameters in the molecular system. The calculated electric charge of b-carbon of 3-phenyl-l-(2-furyl) propenone is positive (0.055). The change in the electronic spectra of 3-phenyl-l- (2-furyl) propenone appear isosbestic point for hydrolysis. The nucleophilic adduct which was prepared by the reaction of 3-phenyl-l-(2-furyl) propenone was 3-phenyl-l- (2-furyl) -3-thiophenylpropanone. From the results, the reaction mechanism was proposed 1,4-Michael type addition reaction of 3-phenyl-l-(2-furyl) propenone with nucleophile.

출아효모에서 TAR 클론닝법을 이용한 고등동물의 게놈으로부터 특정 염색체 부위의 분리

박정은,윤영호,이윤주,김광섭,윤세련,안태진,임선희,선우양일 동아대학교 기초과학연구소 2003 基礎科學硏究論文集 Vol.20 No.1

복잡한 게놈 분석에 용이하도록 효모의 인공 염색체(YAC) 클론닝 시스템은 발달되어왔다. YAC은 박테리아의 인공 염색체(BAC)보다 더 큰 단편을 클론닝할 수 있고, 또한 클론된 단편을 쉽게 변형시킬 수 있다. 형질전환과 연계된 재조합법(Transformation-Associated Recombination; TAR)은 게놈 라이브러리를 만들지 않고 직접 게놈 DNA로부터 분리하고자 하는 유전자나 특정 염색체 부분을 클론닝 할 수 있는 방법이다. 이 방법은 spheroplast transformation을 수행하는 동안, 목적으로 하는 유전자의 5' 그리고 3' 염기 배열(hooks)을 지닌 TAR 벡터와 게놈 DNA 사이에서 일어나는 상동성 재조합에 의해 이루어진다. 효모 내의 in vivo 재조합을 이용한 TAR 클론닝법은 복잡한 게놈으로부터 목적의 염색체 부분을 원형 YAC의 형태로서 선택적으로 분리할 수 있다. 그러므로 TAR 클론닝 법은 특정 염색체로부터 YACs을 만드는데 매우 유용하여, 전체 게놈으로부터 특이적 유전자나 유전자의 family를 분리하는데 효과적인 방법으로 사료된다. Yeast artificial chromosome (YAC) cloning systems have advanced the analysis of complex genomes considerably. They permit the cloning of larger fragments than do bacterial artificial chromosome systems, and the cloned material is more easily modified. Transformation-associated recombination (TAR) is a cloning technique that allows specific chromosomal regions or genes to be isolated directly from genomic DNA without prior construction of a genomic library. This technique involves homologous recombination during spheroplast transformation between genomic DNA and a TAR vector that has 5' and 3' gene targeting sequences (hooks). Using in vivo recombination in yeast, TAR cloning selectively isolates, as circular YACs, desired chromosome segments or entire genes from complex genomes. We propose that TAR cloning can provide an efficient means for generating YACs from specific chromosomes and that TAR cloning may be useful for isolating families of genes and specific genes from total genome DNA.

주제학습을 통한 ICT 활용 교육 모형 개발

박선주,김정랑,김철,이윤형 光州敎育大學校 初等敎育硏究所 2002 初等敎育硏究 Vol.17 No.-

In coming 21st century, which is forecasted that it will be a knowledge-information oriented society, abilities of information acquirements are required. For this, the Ministry of Education has been encouraging the business of information oriented school education and promoting application of ICT more than 10% in all classes of the 7th curriculum. Moreover, after extending applied classes into 20% by 2005, the Ministry of Education will promote editing textbooks by subjects reflecting the content of ICT application. But, actually, classes applied ICT aren't fulfilled in education fields. The main reason for this is that teachers don't understand fully ICT application model. On the basis of the preceding studies, this study designed subject-settlement class model to develop students' abilities of information acquirements. The subject-settlement class model is made up of 5 steps--confirmation of studying subjects, searching information and collecting, using information, arrangement of results, communication of information, and evaluation. By experiencing search of information, arrangement of information and creation of new information, the application of this model helps the students develop abilities of information acquirements. Nowadays, development of information communication and of computer makes the world change from information oriented society into knowledge oriented society. Future society will focus on the ability of production to create knowledge information. This study is the result presented as a part of the ability of creating information. Furthermore, the development of various learning and teaching models, which are required in information oriented age, are expected.

한국인에서의 무과립구증 발병율 조사연구 -제4상 임상시험을 위한 기초자료조사-

안윤옥,박병주,이무송,김병국,구홍회,서철원 大韓臨床藥理學會 1993 臨床藥理學會誌 Vol.1 No.1

白地어음 制度에 관한 考察

朴菜均,尹柱漢 朝鮮大學校 法政大學 1997 法政大論文集 Vol.4 No.-

백지어음은 그 자체로서는 어음은 아니나 그 후에 백지어음 행위자(보통 백지어음 발행인)의 의사에 따라 소지인이 백지를 보충하면 어음으로서 완성되어 어음상 권리를 표창하게 되며 백지어음 행위자는 그 기록에 따라 책임을 진다. 이같이 백지어음에 있어서는 백지로 되어 있는 조건을 보충하면 어음상의 권리가 발생하나 이 어음상의 권리는 요건보충에 의하여 돌연히 발생하는 것이 아니고 보충이전에 보충을 정지조건으로 하는 어음상의 권리가 백지어음에 표창되어 보충이란 정지조건을 성취하면 어음은 어음상의 권리 즉 어음지급청구권을 표창하게 된다. 따라서 백지어음은 요건이 보충되기 전이라도 보충권과 함께 이러한 조건부권리를 표창하며 이 권리는 백지어음의 양도에 의하여 보충권과 함께 전전유통한다고 보겠다. 이상에서 논술한바와 같이 백지어음제도에 관한 의의, 경제적기능, 요건, 성질, 효력, 보충권등에 대해서 문제점을 보아왔거니와 학설, 판례, 실행으로서 사회에서 통용되고 있으며 명문화되지 않는 어음행위등에 대해서 타법규와의 준용등 혼란을 예상하여 볼 때 백지어음제도의 법제화도 고려해 볼 필요가 있다고 본다.

농어촌 소규모 중학교 단계형 수준별 교육과정 운영 사례 연구

윤길준,박주성 조선대학교 사범대학 부설 교과교육연구소 2002 敎科敎育硏究 Vol.23 No.1

The purposes of this study were to analyze a case of operating the level differentiated curriculum that is one of the characteristics of the 7th Curriculum, and to find the problems and improvement plans for the curriculum. A small-sized middle school with 6 classes was chosen as a case for this study. The school operated the level differentiated curriculum fairly well for a year. The results showed positive aspects and negative ones as well. It is expected that more problems will be occurred if the level differentiated curriculum is being operated fully in the middle school without complementary measures. Followings are found to be adjusted as a result in this case analysis. First, sufficient number of teachers are secured. It is not appropriate to do the level differentiated move when number of teachers in charge is less than 2 teachers. Second, it is practically difficult to run level-differentiated group in a class. It was very hard and had no effect teaching individually for various-level groups in a 45-minute class. Third, Sufficient financial support from government is needed for those who are needed to take extra complement curriculum guidance. In short, it is necessary to correct and complement the shortcomings of the level0differentiate curriculum in order to improve learning capabilities of students.

미세 골절 진달을 위한 초음파 C-scan의 활용 가능성

박원근,최민주,이원흠,이윤준,이헌주,강창익,박전홍 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

The study examines the medical potential of an ultrasonic C-scanning technique and for diagnosis of the fatigue induced micro-fractures of the bone. In general, it is not easy to detect the micro­fracture by a simple radiological technique. In the study, the micro­fractures were made on the tibia taken from pigs using a three point bending. Comparison was made between the ultrasonic C-scan images (25 MHz) and X-ray images of the bones with the micro-fractures, It was found that the micro-fractures invisible on the X-ray images were observed on the ultrasonic images. It is proposed further in-vitro and in-vivo studies making the ultrasonic C-scan technique clinically useful for the diagnosis of the fatigued induced micro-fractures of the bone which are not possible to detect by the conventional radiological method.