국내 다층지반의 지반물성치 및 토압에 관한 고찰

구자갑,김운학,최정호,유영화,정양규 한경대학교 2004 論文集 Vol.26 No.1

This paper study on soil properties and earth pressure at the domestic multi layer. Reliable predictions of the movement of earth retaining structures and the ground adjacent to the braced walls in urban excavation are often difficult due to many variable factors. Also, Unpredictable behavior of ground and retaining structure due to variation of the above factors may cause considerable damage to the adjacent structures, and cost many of human lives as a results of retaining wall failure. The earth pressure at the retaining walls was measured at total 13 numbers sites and Peck's empirical earth pressures adapted at the design stage. The geotechnical properties by this research was proposed as a preliminary design guide line in urban excavation where controling ground movement and safety assurance of adjacent structure. The earth pressure of rock masses were found to be 70.14% of Peck's earth pressure and the earth pressure of soil were found to be 44.4% of Peck's earth pressure. It is indicated that the design earth pressures of a retaining wall is

과학기술 정보체제의 계획을 위한 기초연구 -정보의 특징, 정보의 이용및 유통체제의 개선-

구자영 韓國圖書館學會 1973 圖書館學 Vol.3 No.1

This paper is intended as a basic study in which the purpose is to provide understanding of the workings of man in relation to his information resources. Such understanding would prove of value in formulating the policies of an information center serving the fields of science and technology. The information problem of the scientific community was assessed in the lights of the characteristics of the information (cumulativeness, currency versus obsolescence, volume versus redundancy, interrelationships, and foreign literature)and the flow of information and communication patterns covering the use of the variety of media and the information gathering habits of scientists. What can be done to ease the problem was sought in the improvements and innovations which call the attentions of the scientists and the technologists as producers and users of the information, of the professional organizations of various disciplines and of government

십이지장에서 발생한 간양 선암종 : 1예보고 a case report

구자홍,임현철,김진영 關東大學校醫科大學醫科學硏究所 1998 關東醫大學術誌 Vol.2 No.1

The hepatoid adenocarcinoma is a rare extrahepatic primary neoplasm showing similar histopathologic features of primary hepatocellular carcinnoma and usually produce a large amount of alpha-fetoprotein hepatic type. There ate several pathologic and radiologic reports of adenocarinoma of stomach, lung, pancreas, gallbladder, bile duct, ampulla of Vater, renal pelvis arid urinary bladder. Authors report a case of biopsy-proven hepatoid adrnocarcinoma of the duodenum.

이중음소 모델에 기초한 대용량 음성인식

구자윤,권영현,이건상,양성일 한양대학교 이학기술연구소 2001 이학기술연구지 Vol.3 No.-

본 논문에서는 문맥 종속형 유사음소 단위 모델에 기반한 대용량 어휘인식에 관한 실험을 수행하였다. 한국어의 발음 및 음운 특성을 고려하여 선정한 50개의 단일 유사음소 모델로부터 총 593개의 이중음소(diphone)를 구성하여 인식의 기본단위로 설정하혔다. 유사 음소 및 언어 모델 데이타베이스로부터 발음사전을 구성하고 기본단위 인식시 탐색 공간을 줄이고 성능을 향상시키기 위해 bigram을, 구문단위로 분할한 문장인식에 대해서는 unigram을 적용하였다. 실험 결과, 유사음소단위 인식에서는 69.16%의 인식률을, 문장인식을 거친 최종 인식률은 87.36%의 성능을 나타내었다. In this paper, We studied and carried out an experiment on speech recognition of large vocabulary based on diphones. We set up 593 diphones for basic PLUs from 50 phonemes considering pronunciation and phonemic characteristic of Korean language and constructed the lexicon from the database of phoneme and language models. Bigram was applied to recognition of PLUs to reduce search space and increase efficiency of recognition and unigram was applied to language model divided by phrase. As a result, experiment about the sentence recognition shows that diphone models would have 9.14% better performance than monophones.

원발성 복막수염의 방사선학적 소견 : 초음파와 CT 소견

구자홍,송순영,이재균,김홍자,원영준 關東大學校 醫科大學 醫科學硏究所 1999 關東醫大學術誌 Vol.3 No.1

Purpose : To describe ultrasound(US) and CT findings of primary epiploic appendicitis Materials and Methods : From March, 1999 though Novemer 1999, clinical, US, and CT findings were reviewed in nine patients with primary epiploic appendicitis (eight women and one men, aged 27-54 year[mean, 36 years]). All patients performed US and four patients performed abdominal CT. The main symptoms were rapid onset, localized abdominal pain and tenderness(left lower quagrant pain[n=8], right abdominal pain[n= 1]) Results: US revealed small, ovoid, and mass are echogenic(n=7) or isoechoic(n=2) mass, located anterolateral to the colon. The echopattern of the mass are echogenic(n=7), or isoechoic(n=2). CT performed in four patients shown small oval fatty mass with a thin peripheral rim and central high attenuation area at anterolaeral side of the colon. Some streaky infiltration are associated around the fatty mass. Conclusion: Primary epiploic appendicitis has fairy. characteristic US and CT findings that enable a rapid diagnosis and valuable far differential diagnosit of other condition of acute abdomen.

은행원의 VDT작업에 따른 안자각종상

구정완,이승환,이자영 가톨릭대학산업의학쎈타 산업의학연구소 1991 韓國의 産業醫學 Vol.30 No.5

In order to investigate the effects due to visual display terminal(VDT) work of banking operations, the questionnaire survey for subjective eye symptoms was carried out on 378 bank clerks who had been engaged in VDT work for various length of work hours. The results were as follows: 1. Of the 17 items of questionnaire, the highest percentage was accounted for by 'eye strain' (61.1%),follwed by 'feel pressure in eyes'(33.3%),'eyes feel ache' (26.7%),'eyes feel heavy'(21.4%) and 'blurred vision of objectl'(16.7%) in the order of sequence. 2. The average weighetd score of subjictive eye symptoms was 13.75, 14.39, 16.78 and 13.13 in the age groups of less than 25,25-29, 30-34, and 35-44 years, respectively, it was significantly increased from the age group of less than 25 years to 30-34 years. Also, it was significantly increased according to increasing with work duration. 3. The average weighted score of female was larger than that of male and the score of green color was larger than that of black-white color by the color of cathode ray tube display. 4. Aggravating time of subuective symptioms was during the end of month in period of a month, a monday in a day of week and on duty (P.M.) in a daily work.

토러스 출력층을 갖는 SOM을 이용한 한국어 음소 인식

구자영,전경훈 단국대학교 1999 論文集 Vol.34 No.-

This paper proposes a new Self Organization Map(SOM) architecture with torus type output layer. The new SOM was applied to Korean phoneme reognition. An exeriment was performed and the result shows that the new architecture is better than the original one by Kohonen in terms of training time and cohesion of phonemes in the output layer.

유전자 알고리즘을 이용한 다각형 사이의 대응점 설정 방법

구자영,원보환 단국대학교 1998 論文集 Vol.32 No.-

Genetic algorithm is an optimization method to find an approximately optimal solution which can be applied to problems for which no reasonably fast algorithms have been developed. In this work, genetic algorithms is applied to the problem of finding correspondence between polygons. This problem is frequently encountered in many areas of computer vision and graphics. An example is warping operation, which makes smooth transition from a source object to a target object. A correspondence is represented as a chromosome and a population of chromosomes undergoes genetic operations such as selection, crossover, and mutation. Some examples show the proposed method generates reasonable correspondences between polygons.

이웃으로부터의 지지에 근거한 Edge Labeling을 이용한 겹쳐진 물체의 인식방법

具滋瑛 단국대학교 1993 論文集 Vol.27 No.-

A new two dimensional overlapped object recognition scheme which is based on the support of neighbours is proposed. A set of significant edges is chosen from the vertices of polygon-approximated boundary of the object. A four-tuple feature is selected for each pair of the significant of the object image and the model. The new object labeling algorithm finds a highly probable unambiguous object labeling, since at each iteration it chooses an edge label that is most strongly supported by other edge labels. The set of candidate edge labels for the unambiguous labeling is adijsted at each iteration to be consistent with the edge labels already chosen. An example shows the process and performance of the algorithm.

고진공내의 데칸용매하에서 요오드화 iso-프로필이 니트로벤젠 및 톨루엔과의 착물형성에 관한 연구

김영철,김세경,임종완,구덕자 漢陽大學校 環境科學硏究所 1991 環境科學論文集 Vol.12 No.-

고진공내의 데칸용매하에서의 요오드화 iso-프로필의 용해도를 8, 15, 25℃에서 니트로벤젠과 톨루엔이 존재할 때와 존재하지 않을 때의 두 경우에 대하여 각각 측정하였다. 데칸용매내에 니트로벤젠과 톨루엔이 존재할 때 요오드화 iso-프로필의 용해도가 존재하지 않을 때 보다 더 크고, 톨루엔과 요오드화 iso-프로필과의 상호작용이 니트로벤젠과의 상호작용보다 더 강하게 작용한다는 것을 알 수 있었다. 그리고 니트로벤젠과 톨루엔이 데칸용매내에 존재할 때 요오드화 iso-프로필과 니트로벤젠 및 톨루엔이 각각 불안정한 Complex를 형성한다고 생각되어 이 Complex를 여러 경우의 비율로 가정하여 계산해 본 결과 1 : 1 Comples를 형성한다고 보는 경우의 평형상수 K값이 비교적 일정한 값을 나타내었다. 그러므로 1 : 1 Complex 즉 ??과 ??이 용매속에 형성됨을 알았다. 또한 이 Complex의 생성에 대한 엔탈피, 자유에너지 및 엔트로피의 변화도 산출하였다. The solubilities of iso-propyliodide in decane on high vacuum were measured at 8℃, 15℃ and 25℃ in the presence and absence of nitrobenzene and toluene. When nitrobenzene and toluene exist in system respectively, the solubilities of iso-propyliodide in the presence of nitrobenzene and toluene are greater than in the absence, and the interaction of iso-propyl iodide with toluene is stronger than with nitrobenzene. In the presence of nitrobenzene and toluene, it could be thought that iso-propyl iodide forms unstable complex with nitrobenzene and toluene. The complex was assumed in various ways and it was evaluated that the equilibrium constant K value was relatively constant under the assumption of 1 : 1 complex. Thus, 1 : 1 complexes, ??과 and ?? are formed in the solution. Also, the changes of enthalpy, free energy and entropy for the formation of the complex were calculated.