地下空洞의 安定性 解析을 爲한 岩盤特性 係數間의 關係와 入力資料補正에 關한 硏究

安大榮,崔榮天 尙志大學校 1992 論文集 Vol.13 No.-

R.Q.D. and seismic velocity is known as the most reasonable data among the given datum in numercal representation of rock mass quality index. R.Q.D. represents frequency of fissures, while fissures of bedrock bring about some decrease in velocity and young modules related to rock mass. According we discuss about the relation between R.Q.D. and characteristic parameters such as Velocity, Velocity index, Joint frequency young modules and ratio. We give a conclusion that the relation is nearly given by a linear equation as follows. 1) The relation between R.Q.D(Q) and velocity(V) is showed a linear equation R=33.4(V-2.5), and its velocity index(VF/VL)2 is not always 1:1. 2) The relation between R.Q.D and modules ratio(Er/Erab) can be represented the equation Er/Erab 2 Cro 32, R.Q.D-2.22. 3) The ratio between compress strength and youn's modules can be showed the range of 1:380, and young's modules in granodiorite is given the range of 1.91 4.51. 4) The compress strength(Qc) by the means of point load index[Is(v)] can be represented the equation Qc=15.6+Is(50).

불악산(경기도)의 식물상에 관한 연구

안영희,안영철,최광율,박대식,정연택 중앙대학교 유전공학연구소 2001 遺傳工學硏究論集 Vol.13 No.1

Field surveys were carried out 3 times from 2000 5. 17 to 2000. 6. 4. Main results obtained from this study wet·e as follows : 1.The vascular Plants in Mt. Bull-ak were consisted of 221 taxa such as 71 families, 163 genera, 188 species, 30 varieties, 2 forma, 1 hybrid. 2.Family Compositae and Gramineae covers 8.6% and 7.2% of total number of naturalized plants, respectively. 3.Pteridophyte, Gymnosperm, Dicotyledon and Monocotyledon covers 2.5%, 2.7%, 75.9% and 18.1% of total number of naturalized plants, respectively. 4.The life cycle of the plants was annual 11.8%, biennial 11.3%, perennial 76.9%. As it compared with consistency ratio in the flora of Korea, the distribution of biennial appeared highly. 5.The highest peak of blooming month is May (49.3% among total number of naturalized plants). 6.In this area the Korean endemic plants are 5 taxa (2.3% among total number of naturalized plants). 7.Number of naturalized is 20 taxa (9.0% among total number of naturalized plant)

관광객의 쇼핑가치 지각이 쇼핑만족에 미치는 영향에 관한 연구

안대희,김희영 세종대학교 관광산업연구소 2002 호텔관광경영연구 Vol.17 No.-

The objectives of this study were 1) to examine the relationship between shopping value and shopping satisfaction.; 2) to examine the relationship between store type and shopping value. Self-administrated questionnaire was used to collect the data for this study after reviewing previous studies and conducting pre-test twice. The data was analyzed by using analysis, Multiple regression, T-test. The followings are the results of this study, First, There were significant relationships between Tourists' Shopping value and Shopping satisfaction. Second, Store type were significant differences according to Tourists' Shopping value. The result of this study will be helpful for the shopping industries which gave needs to establish the marketing strategies.

스프라인 곡선을 이용한 내용기반 이미지 검색 시스템을 위한 모양 유사도

안철웅,김대영 啓明專門大學 産業開發硏究所 2002 啓明硏究論叢 Vol.20 No.1

본 논문에서는 모양특징을 사용하여 이미지를 검색하기 위한 유사도 측정에 관하여 논한다. 개체의 모양은 이미지에 있는 개체의 외곽선을 추출함으로서 얻어낼 수 있다. 이미지에 있는 각각의 개체는 수동으로 외곽선을 추출하게된다. 외곽선은 큐빅 스프라인 곡선을 사용하여 근사시키고. 특징벡터는 자동으로 추출한다. 각 개체의 모양 특징은 특징 데이터베이스에 추가되어 이미지 검색시 사용한다. 사용자가 그린 스케치 질의도 큐빅 스프라인 곡선을 사용하여 근사시키고, 특징벡터를 추출한다. 이미지의 검색시 사용자 스케치 질의의 특징백터와 이미지 데이터베이스에 있는 개체의 특징벡터와 비교하여 검색결과를 결정하게 된다. 본 논문에서는 개체의 모양 유사도를 측정할 수 있는 측도를 고안하였고 이것을 실험하였다. 실험결과 본 논문에서 제안하는 모양 유사도 측도가 유효함을 알 수 있었다. In this paper, we present a similarity measure for retrieving images based on object shape features. Shapes are derived by extracting the contour of relevant object represented in the images. For each object in the images, its contour lines are manually extracted and sampled at points, Its 2-D contours are approximated by parametric cubic spline curves and its shape feature vectors are automatically extracted. The object shape features are appended to feature DB and used during the image retrieval process. User sketch query is also approximated by parametric cubic spline curves, its shape features are extracted. During the image retrieval process, the shape features of user sketch query are compared with those of image DB using our similarity measure to determine the set of candidate images to be retrieved. We designed and experimented our shape similarity measure. Experimental result shows that our proposed similarity measure is effective one.

RV 형 자동차 Console Box 사출성형공정 해석 및 최적 게이트 선정

안동규,김대원,한길영 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1

본 연구에서는 BE 분석하였다. 또한, 본 대상 금형의 게이트 위치와 개수의 제품 생산성 영향성 및 형체력 상관관계를 분석하였다. 최종적으로 해석결과와 분석결과들을 이용하여 제품에 적합한 최적의 게이트 M 기반의 사출성형 해석을 통하여 RV 형 자동차 콘솔 박스(Console Box) 제작용 사출성형 금형의 게이트 위치와 게이트 개수를 결정하였다. 사출성형 해석시 금형 설계 변수를 게이트 위치와 개수로 선정하고, 게이트 위치와 개수의 변화에 따른 제품의 충진 특성, 압력 특성 및 제품의 웰드라인 생성과 수축/팽창 특성 변화를 정량적으로 위치와 게이트 개수를 도출하였다. The objective of this research work is to determine the gate location and the number of gates of the injection mould for the console box of RV cars using injection molding analysis based boundary element method (BEM). The gate location and the number of gates have been selected as design parameters of the mould. The influence of the gate location and the number of gates on filling characteristics, pressure characteristics, the formation of weld lines, and volumetric shrinkage/expansion characteristics has been quantitatively investigated. In addition, the effects of the gate location and the number of gates on the productivity of products and the clamping force of the mould has been evaluated. Finally, the optimum gate location and the number of gates for the target mould have been obtained.

개인용 저장 시스템의 구조 및 저장 소프트웨어에 관한 연구

안대영 서원대학교 미래창조연구소 2004 과학과 문화 Vol.1 No.1

The need for the network based personal storage system is growing, as the computing environment has changed to the internet based computing and the data kept by each person has been increased rapidly. This paper presents a new concepts and the architecture of the personal storage system. The proposed storage system can be connected to internet, and using the IP (Internet Protocol) based I/O protocol, iSCSI, the data stored in it can be accessedin anywhere and at anytime at the block level. By adopting the RAID parallel disk I/O technology, it can provide the high performance, high storage capacity, and reliable disk I/O functionality. Specially, this paper presents the implementation details of RAID management software which is designed for the personal storage system. The RAID management software is designed based on the Linux operating system, in which Linux multi-device module is used as the RAID volume manager. A data cache module is implemented and an adaptive cache destaging algorithm considering the I/O request arrival rate is also provided to improve overall I/O Performance.

정신분열병 및 정신분열형 장애에 대한 올란자핀의 효과와 안전성

안용민,강대엽,권준수,김창윤,김철응,반건호,신영민,이기철,이동우,이중서,조현상,채정호,김용식 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.4

연구목적 : 본 다기관 공동임상연구는 국내 환자를 대상으로 새로운 항정신병약물인 올라자핀의 치료 효과와 안전성을 확인하고자 시행되었다. 방 법 : 1999년 7월부터 2000년 3월까지 국내 10개 병원에 방문한 정신분열병 및 정신분열형 장애 105명을 대상으로 비대조 개방 임상연구를 시행하였다. 중등도 이상의 정신병 증상을 지니거나, 부작용으로 약물교체가 필요한 경우 또는 기분장애 증상의 치료가 필요한 환자를 대상으로 하였다. 2∼7일간의 약물 배설기간 후에 1일 10mg의 올란자핀을 투여하였고, 이후로 3∼7일 간격으로 용량을 조절하여 총 8주간 투여하였다. 치료 효과는 PANSS(Positive and Negative Syndrome Scale), BPRS(Brief Psychiatric Rating Scale), CGI(Clinical Global Impression-Severity), MADRS(Montgomery-Asberg Depression Rating Scale), HAM-A(Hamilton Rating Scale for Anxiety)로 판정하였다. 안전성 평가는 자발적인 이상반응 보고, 활력징후와 혈액 검사 및 SAS(Simpson-Angus Scale), BARS(Barnes Akathisia Rating Scale), AIMS(Abnormal Involuntary Movement Scale)척도를 이용하였다. 결 과 : 105명중에서 85.7%인 90명이 8주간의 치료를 완료하였다. 평균 최빈 용량은 일일 16.1(±4.7)mg이었고, 종료시점에서의 BPRS전체 점수가 기저 상태에 비해 40%이상 감소된 반응군은 69.5%이었다. PANSS의 양성 증후군과 일반정신병리 뿐만 아니라 음성 증후군 소척도에서도 유의한 감소를 보였으며, 이 감소들은 치료 초기부터 나타나서 8주간 지속되었다. 43.8%의 피험자가 중등도 이상의 우울증상을 같이 지니고 있었으며, 올란자핀에 의해 MADRS와 HAM-A가 유의하게 감소하였다. 치료 기간 동안에 활력징후에는 뚜렷한 변화가 없었으나 체중은 8주간 지속적으로 증가하였다. SAS와 AIMS는 감소하였으며, 정좌불능증을 제외한 나머지 추체외로 증상의 발생비율도 낮았다. 임상적인 증상이나 징후를 동반하지 않는 ALT/SGPT의 상승을 보였지만 프로락틴을 포함하는 대부분의 혈액 검사상 뚜렷한 이상 변화는 없었다. 결 론 ; 비록 본 임상연구가 비대조 개방 임상연구로서 많은 제한점을 가지고 있지만, 올란자핀이 기존 약물에 내약성을 보이거나 기분증상을 동반하는 정신병에 치료 효과가 있었다. 그리고 기존 항정신병약물 치료시에 문제가 되었던 추체외로 증상과 고프르로락틴 혈증을 포함하는 대부분의 부작용면에서 안전성을 보여 주었다. Objective : This multicenter clinical trial was carried out to investigate the efficacy and the safety of olanzpine for the treatment of Korean patients. Mothod : 105 patients with schizophrenia and schizophreniform disorder, visited at 10 mental or university hospitals, had received an open and non-comparative treatment with olanzapine for 8 weeks. Patients had psychotic or depressive symptoms with the severity above moderate degree or intolerable side effects to previous antipsychotics. After a wash-out period of 2-7 days, 10mg olanzapine was prescribed initially to all the patients, and then the dosage could be adjusted within the range of 5-20mg/day of olanzapine by 3-7 days. Results : 90(85.7%) of 105 patients completed the 8-weeks trial and the mean modal dose of olanzapine was 16.1(±4.7%)mg/day. At the end of the trial, 73 patients(69.5%) were classified as responder, which was defined as 40% or more improvement in BPRS(Brief Psychiatric Rating Scale) score comparing to baseline. There was a significant reduction in the scores of PANSS(Positive and Negative Syndrome Scale)and subscales including negative symptom scores and CGI. Also weekly analysis showed that the reductions in scores were kept on for the whole period of the trial. 43.8% of all the patients had depressive symptoms at the baseline and total scores of MADRS(Montgomery-Asberg Depression Rating Scale) and HAM-A(Hamilton Rating Scale for Anxiety) were also reduced after the trials. Vital signs revealed no clinically significant changes but continuous weight gain was observed during the treatment with olanzapine. The scores of SAS(Simpson-Angus Scale) and AIMS(Abnormal Involuntary Movement Scale) for assessing the EPS(extrapyramidal symptoms)and tardive dyskinesia respectively were significantly decreased and only a few patients reported EPS as adverse events. Although mild and clinically non-significant of ALT/SGPT was observed, most laboratory parameters including plasma prolactin level showed to significant changes during the trial. Conclusions : Although this trial had many limitations because it was a non-comparative and open study, olanzapine showed high efficacy on the positive, negative and depressive symptoms in schizophrenia and schizophreniform disorder.In addition to that, olanzapine showed a substantially favorable safety profile, such as low incidence of EPS and hyperprolactinemia.

용융침투법으로 제조한 알루미나-유리 복합체의 동적 피로 특성 평가

원대희,안승근,배태성,강동완,진영철 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.3

The fatigue characteristics of alumina-glass composites were evaluated by biaxial flexure test under the dynamic loading conditions. 88 specimens were tested by tested by testing 22 samples at each of four loading rates : 0.01, 0.1, 1, and mm/min. A Vickers-produced indentation crack was made at the center of the tensile surface with load of 49.0 N, and the microstructural aspects of crack propagation was investigated under statically loaded state in distilled water at 37℃. The results obtained were summarized as follows; 1. The fatigue parameter of alumina-glass composite containing 6 mol % yttria was n=22.2, σf0=319.6 MPa. 2. 10-year failure stress of alumina-glass composite containing 6 mol% yttria was 171.7 MPa. 3. Fracture surface of alumina-glass composite indicated the frictional interlocking of jogs having the tendency of toughening by crack deflection, rather than by crack bridging.

좌골부 욕창의 치료

박대환,한동길,안기영 대구효성가톨릭대학교 1996 연구논문집 Vol.53 No.2

Ischial ulcers are the most common of all pressure ulcers, probably because they directly overlie the points of maximum pressure on the sitting surface. Furthermore, they are among the most common secondary ulcers for the same reason. Also, ischial ulcers are frequently complicated by abnormal lesional bursae, by extension, fistula toward the perineum, urethra, or peritoneal cavity. Urethrograms or panendoscopy are necessary prior to surgery and must remove all irreversibly damaged tissue. Consequently any surgical plan for ischial ulcers must take into account the effects of bone removal on weight bearing and positioning, and must provide stable, durable soft tissue cover intelligently designed to be reliable in the event of a recurrence. From April 1990 to April 1993, we had reconstructed 15 cases of ischial ulcers. In 13 cases of primary ulcers, inferior gluteil thigh flip (7 case), transpositin flap(2 case), ischiectomy and direct closure (3 cases), gluteus maximus myocutaneous island flap(1 case) was done. In 2 cases of secondary ulcers, V-Y advancement flap of biceps femoris and semitendinosus and gracillis muscle flap were done each other.

외국인 쇼핑관광객의 의류상품 평가에 관한 연구

김희영,안대희 한국문화관광학회 2001 문화관광연구 Vol.3 No.1

The purpose of this study is to investigate the evolution of the selection of clothing product, and to survey how the evolution criteria affect overall shopper's satisfaction, the willingness of repeated buying. The sample of this study is from the inbound traveler. The result of this study is as follows: 1. Demographic characters affect the evolution of the selection of clothing to inbound traveler. 2. The Clothing evolution criteria affect overall shopper's satisfaction, willingness of repeated buying. The result of this study will be helpful for the apparel industries which have needs to establish the marketing strategies.