바아지식 초대형 부유 구조물의 유탄성 응답 해석

구자삼,김병현,조효제,이창호 韓國海洋大學校 附設 海洋科學技術硏究所 1998 硏究論文集 Vol.7 No.-

A barge-type structure has been recently watched since The Floating Structures Association of Japan proposed the new concept as the most suitable one of floating airports. In this paper, the method, which is based on a combination of a three-dimentional source distribution method and the wave interaction theory is applied to very large floating structure of barge-type. The calculated results show good agreement with the experimental and calculated ones by Yago and remarkable characteristics concerning the hydroelastic behavior of the very large floating structure on the effects of hydrodynamic interactions and choice of body modelling.

주정 중독 환자에게 Fluoxetine 장기 투여가 음주 욕구에 미치는 영향

강병구,김명정,변원탄 大韓神經精神醫學會 1994 신경정신의학 Vol.33 No.2

Effects of long-term medication of fluoxetine and nortriptyline on alcohol craving in alcoholic patients were studied. The subjects were hospitalized male alcoholics recovered from acute intoxication and withdrawal symptoms. They were divided into placebo, nortriptyline(100㎎), fluoxetine(40㎎) and fluoxetine(60㎎) groups. Alcohol craving was measured at the start, 2 weeks and 4 weeks after medication by means of visual analogue scale, verbal rating scale and the amount of alcohol consumed during the taste test. The results were as follows : 1) Alcohol craving as measured by VAS was significantly reduced after 4 weeks of treatment of nortriptyline. 2) Alcohol craving as measured by VAS was significantly abated after 2 and 4 weeks of treatment of fluoxetine(60㎎). 3) Reduction of alcohol craving by fluoxetine treatment preceded emergence of the antidepressant effect of the drug. From these results, the authors suggest that the reduction of alcohol intake by fluoxetine may be partially due to the reduction of alcohol craving and that the effect may precede the antidepressant effect of the drug.

공적 이전소득의 분배 및 노동공급 효과

강병구 한국사회보장학회 2004 사회보장연구 Vol.20 No.2

한국보건사회연구원에서 실시한 『저소득층 자활사업 실태조사』 자료를 분석한 결 과 2002년 우리나라의 시장소득 기준 상대적 빈곤률은 20.75%로 추정되지만, 공적이전소득의 빈곤감소효과 및 노동공급 감소효과는 매우 미약한 것으로 평가되었다. 사회보험급여를 포함한 공적 이전소득은 전체 가구의 2.21%(약 329천 가구)만을 상대적 빈곤으로부터 구제하였으며, 빈곤계층의 평균소득갭을 9.17% 축소시키는데 불과하였다. 또한 공적 이전소득의 소득분배 개선효과는 동등화지수를 0.5로 할 경우 지니계수를 0.01945 포인트(5.51%) 감소시키는 것으로 나타났다. 사회보험급여를 포함한공적 이전소득이 연간 100만원 증가할 때 남자세대주와 여자세대주의 연간 노동시간은 각각 81.6시간(1.06%)과 15.6시간(0.76%) 감소하고, 공적 이전소득의 노동공급탄력성은 비근로소득에 비해 매우 작은 것으로 나타났다. 향후 우리나라의 공적 이전지출 정책은 예산의 절대 규모를 증대시켜 빈곤층의 보호를 확대하는 가운데 노동공급의 감소로 인한 경제적 비효율의 발생을 최소화시키는 방향으로 추진되어야 한다. 특히 고용보험제도의 근로유인체계를 강화하고, 국민기초생활보장제도의 경우 근로능력이 있는 조건부수급자에 대한 근로유인체계를 개선할 필요가 있다. Since the economic crisis in 1997, there has been increasing demand for the expansion of social welfare expenditures in Korea. At the same time the welfare system has been criticized by its inefficiency. According to the analysis with National Survey on the Low-Income Classes and Self-Reliance Program, the relative poverty rate which is measured in terms of the 50% of household median income was 20.75% in 2002. The same analysis showed that the effects of government transfer programs on poverty reduction and income redistribution were insignificant. Also, the negative effect of government transfer programs on labor supply was smaller than that of unearned income. Implications derived from the analysis are as follows. While the government transfer programs should be expanded to protect the poor, the Korean welfare system should be restructured to minimize welfare loss. For the efficient transfer programs need to closely link with active labor market policies.

카드뮴폭로후 고환, 신장 및 간장내 카드뮴축적량과 조직손상의 변화

이영구,박정덕,최병선,홍연표,장임원 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.1

To assess the changes of cadmium deposit and histopathologic finding of testis, liver and kidney, different dose of cadmium (Cd) was administerd into male Sprague-Dawley rat(purchased from KIST, Korea Institute of Science and technology) by single intravenous injection. At 12, 24, 48, 168 and 672 hours after Cd injection, tissue cadmium concentration and histopathological change were examined. Cd exposed group showed lesser weight gain than the control. Renal Cd content tended to increase in time-dependent pattern, while hepatic and testicular Cd content tended to decrease. Mean of renal Cd content to hepatic Cd content (Cd K/Cd L) also progressively increased. These results suggest that Cd might be gradually transported to kidney from other organs. In testis and liver, degenerative changes appeared relatively in acute phase. These changes became more pronounced in testis, while less prominent in liver. In kidney, swelling of proximal tubluar cells and thickening of glomerular basement membrane appeared relatively later and these changes were progressively aggravated.

기업의 전략적 자세 확립과 정보기술의 활용

강병구 高麗大學校 産業開發硏究所 1994 産業開發硏究 Vol.3 No.-

무보수 호흡용 보호구 착용이 2차 제련 연작업자들의 연폭로지표에 미치는 영향

이영구,황보영,리갑수,이성수,안규동,이병국 순천향대학교 산업의학연구소 1997 순천향산업의학 Vol.3 No.1

It is often impossible to improve working condition in small scaled lead industries due to inherent old work process and lack of capital to improve it. This is particularly true in secondary smelting industries in Korea. Alternative ways to protect workers in these industries are respiratory protection and job shift if at all possible to less harmful workplace. This study intended to evaluate the effect of maintenance free respirator and job shift of lead workers to other non-lead workplace on the level of lead exposure of workers in terms of blood zinc protoporphyrin as an index of lead absorption and intoxication of lead workers. Seventy three workers of one secondary smelting industry whose work duration was more than 4 months were studied. All workers were classified into 4 groups such as managemental workers(8), non-lead workers(14), lead workers(44) and shift workers(7). Personal data such as age and work duration were collected and air concentration of lead in each workplace were also measured. Blood ZPP was chosen as an index of biological monitoring and was measured regularly once a month for 5 months study period. The results obtained were as follows: 1. There were no significant differences of mean blood ZPP during 5 months study period in management workers and non-lead workers showing the range of 23.1-26.5 ㎍/100ml and 22.2-24.2 ㎍/100ml respectively. 2. Rapid reduction of mean blood ZPP from first month (203.0 ± 106.7 ㎍/ 100ml) to third month (128.4 ± 75.1 ㎍/100ml) was noticed and after 3 months period there was no further reduction of blood ZPP in lead workers. 3. The initial mean blood ZPP of shift workers who moved to non-lead workplace was 394.3 ± 114.9 ㎍/100ml and their mean blood ZPP were steadily decreased every month from 344.3 ± 98.4 ㎍/100ml of first month to129.9 ± 33.5 ㎍/100ml of 4th month). 4. The average reduction rate of blood ZPP based on initial blood ZPP was 37.0% in lead workers for 3 months period and 67.1% in shift workers for 4 months period. With above results it was observed that respiratory protection and work shift could protect lead workers from lead exposure by reducing lead exposure in secondary smelting industry which had fairly bad working condition. But for a complete prevention of lead poisoning, it has certain limitation and should be used as an interim method until fundamental engineering control of workplace.

도시하천 악취물질의 발생원조사에 대한 연구

조정구,배병훈,최금찬,임경택 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1

This study has been carried out to investigate odor characteristics and removal methods on the water quality and sulfuric material of four urban sewage. The results from these experiments are as followings ; 1. For sediment, N contents(%) was shown 0.068mg/l at S-1, 0.109mg/l at S-2, 0.043mg/l at S-3, 1.233mg/l at S-4 and S contents(mg/g) was shown 2.192mg/l at S-1, 2.410mgA at S-2, 1.564mg/l at S-3, 15.146mg/l at S-4. The sample of S-4 was indicated the worst value to 1.233mg/l 2. NH₃, one of the representative odor materials, which was showed the highest value at S-1 in the water, showed the highest value at the S-4 in the air. It means that the cause of odor comes from the disintegration of sediment orgamisms, which has more important effect than the water pollution. 3. To control the odor materials, it is desirable to minimizes the inflow of sewage from pollutant source itself. One of the considering odor method is H₂O₂ or activated carbon input into the sewage, which has several advantages as chemical treatment of odor materials is to be desirable.

한국인 6-17세 아동의 성장과 발육에 관한 준종단적 연구 : 제 1 세부과제: 치열궁의 성장 변화 Part Ⅰ: Growth and Development of Arch Form

손병화,김형순,이정구,김석현 대한치과교정학회 1996 대한치과교정학회지 Vol.26 No.3

본 연구는 한국인 남,녀 6세에서 17세 사이의 악안면 성장과 발육에 관한 준종단적 연구의 일부로 시행되었으며 3년간에 걸쳐 남,녀 아동 736명을 대상으로 치열궁의 성장변화를 관찰하고자 치아의 근원심 폭경, 견치간 폭경, 구치간 폭경, 견치 치열궁 장경, 구치 치열궁 장경 그리고 치열궁 주위경을 측정하여 연령별, 성별 평균과 표준편차를 구하고 도표로 표시하여 다음과 같은 결론을 얻었다. 결론 1. 치아의 근원심 폭경 측정에서 상악은 중절치, 제2대구차, 하악은 견치, 제2대구치에서 남,녀 성차이를 인정 할 수 있었다. 2. 견치간 폭경은 11세까지 완만히 증가하는 양상을 보였다. 3. 구치간 폭경은 상악에서는 지속적으로 증가하는 양상을 보이며 그 양상은 9세에서 14세사이에서 가장 두드러지게 나타났다. 하악에서는 9세까지는 다양한 변화를 보이며 이후 14세까지 다소 증가하는 경향을 보였다. 4. 견치 치열궁 장경은 상악에서는 13세까지, 하악에서는 11세까지 증가하는 양상을 보였다. 5. 구치 이열궁 장경은 남자에서는 10세, 여자에서는 9세까지 증가하는 경향을 보이며, 이러한 변화는 상악에서 더 뚜렷하게 나타났다. 이후 상하악 모두에서 감소하는 경향을 보이며 이는 상악에서는 15세, 하악에서는 12세 사이에서 두드러졌다. 6. 치열궁 주위경은 상,하악 모두 10세까지 증가하는 경향을 보이며 그 양상은 상악에서 더 크게 나타났다. 반면에 10세와 14세 사이에서는 감소하는 경향을 보이며 그 양상은 하악에서 더 크게 나타났다. This study was carried out as a part of the semi-longitudinal study on growth and development of Korean children with purpose of observing the growth change in arch form, 736 pairs of study models were taken for 3 years, Mesio-distal diameter of each tooth, intercanine width, intermolar width, canine arch depth, molar arch depth and arch perimeters were measured. Afterwards, mean value and each standard deviation of each age group and each gender were obtained, and corresponding graphs were drawn. The following conclusions were obtained: 1. Mesio-distal diameters of maxillary central incisor, maxillary 2nd molar, mandibular canine, and mandibular 2nd molar showed statistical differences between boys and girls. 2. Intercanine width shows a gradual increase until age of 11. 3. Intermolar width in maxilla shows continuous increase, and the tendency of increase is more apparent between age of 9 and 14, In mandible, various pattern was shown until age of 9,and after, a slight increase. 4. Canine arch depth shows the increasing tendency until age of 13 in maxilla and 11 in mandible. 5. Molar arch depth shows the pattern of increase until age of 10 in male and 9 in female, which is more apparent in maxilla. After age of 9 or 10, dereasing pattrn was significantly shown until age of 15 in maxilla and age of 12 in mandible. 6. Arch perimeters in maxilla and mandible showed gradual increase until age of 10, and the tendency of increase was more apparent in maxilla; however, between the age of 10 and 14, arch perimeters of maxilla and mandible showed gradual decrease which was more apparent in mandible.

소아기 붕괴성 장애 1례

강병구,조수철,홍강의 대한소아ㆍ청소년정신의학회 1996 소아청소년정신의학 Vol.7 No.1

특수학교 경영 자체평가 모형 개발

장병연,금창구,김희연 국립특수교육원 1995 연구보고서 Vol.- No.3

This study investigates to what degree o,』 special schools are managedefficiently and how to develop effective seHf-evaluation model on specialschool management. Self - evaluation of special school managemant isconsidered as an indispensible process to irrlprove educational activities ofspecial school.To pursoe the purpose this study analyzes current status and needs of self- evaluation of special school management and develops model on self -evaluation of special school management.This study provides the concept, objectives, criteria, types, methods andprocedures, success conditions, and domains and contents of self - evaluationof special school management. The study also present current status, needs,and model on self - evaluation of special school. MethodsThis study was conducted by reviewing related literature, teamconferences, and questionnaire survey.1) By reviewing the related literature and documents, theory of self -evaluation of school was explored and some current status of self - evaluationresults were reviewed.2) In order to establish effective study plan and to review the studyprocess, team conferences with professors and educational administratorswere held.3) In order to find out current status and needs of self - evaluation ofspecial school management, questionnaire survey was carried out toeducational administrators and teachers in special schools.Results1) The majority of teachers recognized the necessity of self - evaluation ofspecial school management.2) It was shown that object of self- evaluation of special schoolmanagement was providing opportunity for review and prescription of planand practice of special school management.3) Self - evaluation domains of special school management were devidedinto overall and concrete domains in special school management.4) The concrete domains of self - evaluation of special school managementwere educational object, educational plan, managemant of financial affairs,management of facilities and school environment, relationships with the community, welfare of teacher, management of office work, clinicalsupervision, relationship with parents, goverenment policies on education,operation of curriculum, career educati☞n, guidance of student's life,evaluation of students'academic achievement, teaching materials, therapeuticeducation, and extra-curricula activities.Conclusion1) Many items of evaluation criteria should be selected to get benefitinformation for special school management.2) The evaluation standards should be designed to determine the order ofevaluation object, evaluation contents, and f;he evaluation viewpoint associaf;edwith the aim of the evaluation.3) Educational object and plan in sf)ecial school should be reflect÷edacademic achievement of students appropriately.4) Those data and information must be reported by all teachers.5) The results of self - evaluation of special school management should bereflected in establishing the next year's educational planning.