구조최적화를 위한 국소 탐색 기능 강화 유전 알고리즘의 개발에 관한 연구

최낙기,서명원,조기용 기계기술연구소 2000 성균관대학교 논문집 기계기술편 Vol.2 No.1

It is known that genetic algorithm searches the global optimum of structural problems which mostly have many local minimums. In spite of the advantage of the global search which genetic algorithm has the application to structural problems has been limited, for its slow convergence especially near the optimum point. For the genetic algorithm to be applied to structural problems enhanced local search method for genetic algorithm(ELGA) is devised in this study by adopting mathematical programming technique. During the conventional genetic procedure a feasible and usable direction at the best point is found and searching minimum along the direction is performed to enhance the local search. To verify ELGA two mathematical problems which have many local minimums and two structure problems which are 10 and 25 bar truss problem are applied and its accuracy and fast convergency have confirmed

軍 住居施設의 實態 및 改善方案에 관한 硏究

崔明奎,林寄浣 호남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.8 No.-

군 주거시설은 당국의 꾸준한 노력에 따라 양적으로는 어느 정도 충족되었다고 볼 수 있으나 질적 측면에서는 아직도 많은 문제점을 내포하고 있으며, 특히 주거의식수준의 향상에 따라 주거공간에 대한 요구 또한 증가될 것이므로 이들에게 안정된 주거환경을 제공하기 위해서는 현재의 군 주거시설의 개선은 절실히 필요한 실정이다. 이에 따라 본 연구에서는 군사생활의 경험이 있는 상무대에 근무하는 군 간부를 대상으로, 그들이 거주하고 있었던 관사를 중심으로 한 주거시설의 실태, 만족도 및 선호도를 조사, 분석하여 봄으로서 군 주거시설의 합리적인 개선방안을 제시하고자 하였다. As a result of continuing effort to improve the condition of official residence for professional soldier, the number of official residence for them has been increased, but its quality has many problems up to the present time. As society develops, officers want better living space for their family, and satisfying their demand greatly affect their morale. Therefore, the quality of official residence must be improved. In this point of view, we attempted, in this paper, to survey and analyze the residential condition and consciousness of it, and gripped the several point at issue. Going a step forward, We propose the rational direction for improvement of residential environment.

식도를 포함한 전위장관을 침범한 전이성 악성 흑색종 1예

최정영,김준기,신성하,고영춘,조상욱,서강석,강명원,임연근,여향순,김경수 全南大醫大 2001 전남의대학술지 Vol.37 No.1

노인의 영적 간호요구

최미혜,김경희,김귀옥,김기숙,김수강,김정신,김춘숙,노흥진,박지연,성혜연,오명선,이선희,이원옥,이윤영,이현수,장명재,차혜경,채정선,홍상희 중앙대학교 의과대학 간호학과 간호과학연구소 2001 중앙간호논문집 Vol.5 No.1

This study was designed to exam the aged's needs for spiritual nursing care. The purpose was to serve as a basis for the development of spiritual nursing practice. The major findings are as follows : 1. The degree of needs for spiritual nursing care as area was that needs of love and relationship mean 22.0, needs of meaning and object mean 28.2, needs of forgiving mean 13.5. Total needs for spiritual nursing care mean 63.7, which was on the upper middle level. The needs of meaning and object was rated highest. 2. Among the general characteristics of the subjects, needs of love and relatiohship wasn't significanlty different. 3. Among the general characteristics of the subjects, needs of meaning and object was significantly different according to two factors : age(F=7.260, p=0.001), religion(F=5.275, p=0.001). Higher needs of meaning and object was possessed by the older than the younger, by the one who have religion than the other. 4. Among the general characteristics of the subjects, four factors made a significantly difference to needs of forgiving : sex(t=-2.851, p=0.006), age(F=8.201, p=0.001), religion(F=6.928, p=0.000), disease(t=2.327, p=0.024). Higher needs of forgiving was possessed by man than woman, by the older than the younger, by the one who have religion than the other, by the one who have disease than the other.

인접건물에 의한 반사주광 성능에 대한 평가

최원기,이동권,안명환,서승직 대한건축학회 2004 대한건축학회논문집 Vol.20 No.6

This paper is focused on evaluation of daylight reflecting performance from the adjacent building for improvement of poor environment conditions in a metropolitan area. The numerical model developed can be used for evaluation of daylight reflecting performance. As a result comparison of our simulation programs and commercial softwares, it was verified that there was no difference between two results. In this study, the sensitivity analysis of environmental performance factors of daylight reflecting from the adjacent building were examined, analysed and presented as a solution method for improvement of building environments. The results were proved to be an effective control methods for improvement of building environment, especially in a metropolitan area.

投砲丸에 있어서 身體分節의 運動量에 關한 硏究

崔大雨,白明基 忠南大學校體育科學硏究所 1983 體育科學硏究誌 Vol.1 No.1

The present study was performed to see the momentum of body segment in Shot-put throw. A female athlete of Chungnam National University who was a National junior athlete of Shot-put was served as subject. The analysis of the subject’s shot-put throwing motion is as follows: 1. The record which was gained by O’Brien Method is 13m20cm(Total momentum). That is, Throwing at the original place as Leg strength is the best record(43.03%), the Power of Arm stretching 22.88%, turning of shoulder 17.35%, Gliding 9.85%, Snapping 6.89%. 2. To gain the better record, Shot-putter should build up the Power of Gliding and Snapping through partial practice. 3. To improve Physical fitness, Shot-putter should build up the Power of Leg and Body Upper body through Weight training, Speed, and Jumping exercises.

제2형 당뇨병 남성 환자에서 유리 테스토스테론과 성호르몬 결합 글로블린 농도

남기덕,김영설,박철영,오승준,김덕윤,우정택,김성운,양인명,김진우,최영길 대한당뇨병학회 2002 Diabetes and Metabolism Journal Vol.24 No.6

연구배경:인슐린저항성은 제2형 당뇨병과 심혈관질환의 주요한 위험 인자로 성호르몬과 상호 관계가 있다고 알려져 있다. 그러나 여성과는 달리 남성에서는 연령과 인슐린저항성에 따른 유리 테스토스테론과 성호르몬 결합 글로블린 농도의 변화에 대한 연구가 부족한 실정이다. 그러므로, 본 저자등은 제2형 당뇨병 남성 환자에서 정산인과 비교해서 유리 테스토스테론과 성호르몬 결합 글로블린 농도를 측정하고 연령에 따른 변화 정도를 알아보고자 하였다. 방법:대상 환자 모두에서 연령과 체질량지수, 총 콜레스테롤, 중성지방, 공복혈당과 인슐린 농도를 측정하였다. 혈중 유리 테스토스테론 농도는 방사면역측정법(radioimmunoassay)을 이용해서 측정하였고, 혈중 성호르몬 결합글로불린은 면역방사계측측정법(immunoradiometric assay)을 이용해서 측정하였다(Diagnostic System Laoratories, Wbster, TX, USA). 결과:1)제2형 당뇨병 남성 환자에서 정상 대조군 남성에 비해 성호르몬 결합글로불린은 104.1±35.0 vs 25.7±3.5 mole×10??로 의미 있게 높았으나(p<0.001), 유리 테스토스테론은 13.7±9.5 vs 13.6±6.5 ng/dL로 차이가 없었다. 2)연령과 성호르몬 결합 글로블린 사이의 상관 계수는 제2형 당뇨병 남성 환자에서 0.40로 중등고의 양의 상관 관계를 보였고(p<0.001), 정상 대조군 남성에서 0.11로 유의한 상관 관계를 보이지 않았다. 연령과 유리 테스토스테론 사이의 상관 계수는 제2형 당뇨병 남성 환자에서 0.08, 정상 대조군 남성에서-0.17로 모두에서 유의한 상관 관계를 보이지 않았다. 3)연령과 체질량지수를 보정한 후에 제2형 당뇨병 남성 환자와 정상 대조군 남성에서 혈중 인슐린 농도, 유리 테스토스테론과 성호르몬 결합 글로블린 사이에는 상관 관계가 없었다. 결론:제2형 당뇨병 남성 환자에서 정상 남성에 비해 성호르몬 결합 글로블린 농도가 증가되어 있었으며, 유리 테스토스테론은 차이가 없었다. 연령이 증가함에 따라 성호르몬 결합 글로블린이 제2형 당뇨병 남성 환자에서 정상 남성에 비해 증가 폭이 의미있게 컸으며, 유리 테스토스테론은 변화가 없었다. Background: Insulin resistance is a risk factor for cardiovascular disease and type 2 diabetes mellitus. There are many previous studies indicating that insulin lowers serum sex hormone-binding globulin levels, and there is inverse correlation between insulin resistance and serum sex hormone-binding globulin levels in women. However, in men, a limited number of studies are available to explain the effect of sex hormone on age and insulin. Therefore, the present study was undertaken to investigate the relationship among free testosterone, hormone-binding globulin and age in type 2 diabetic men and control subjects. Method: Age, body mass index, total cholesterol, triglyceride, fasting blood sugar, and insulin concentrations were examined on 89 type 2 diabetic men and 47 control subjects. The free testosterone level was measured by commercially available double-antibody system (Radioimmunoassay). The sex hormone-binding globulin level was also measured by commercially available double-antibody system(Immunoradiometric assay). Results: 1) Sex hormone-binding globulin level was significantly increased in patients with type 2 diabetes. However, there was no significantly difference in free testosterone level between the two groups. 2) Sex hormone-binding globulin was positively correlated with age (r=0.4, p <0.001) in patients with type 2 diabetes. Sex hormone-binding globulin and free testosterone were not correlated with age in control sujects. 3) Free testosterone and sex hormone-binding globulin concentrations were not significantly related to serum insulin concentration after adjusting for age and body mass index. Conclusions: We observed increased sex hormone-binding globulin concentration in diabetes man, and was a positively related to age. Further studies are needed to understand the relationships between age, insulin resistance, testosterone, and sex hormone-binding globulin concentrations(J Kor Diabetes Asso 24:699~707,2000).

쌀보리를 기질로 한 알코올발효의 최적 액화효소

남기두,김운식,최명호,박완 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.2

증자시 높은 점성이 문제되는 쌀보리를 기질로 알콜발효를 행할 경우, 기질의 점성문제를 해결하여 발효조건을 개선하면서 생산수율을 올릴 수 있는 상업용 액화효소를 검토하였다. 쌀보리 증자액화시 BAN을 사용한 경우 기절의 점도는 T120L의 1/3 정도로 떨어졌으며 최종 알콜수율도 T120L에 비해 원료 Ton 당 4 ℓ 정도 더 높게 나왔다. 알콜의 수율은 사용한 당화효소의 종류에 의해서도 영향을 받았다. 산업 규모에서 BAN을 사용한 쌀보리의저온증자가 가능하였으며 고온증자에 비해 알콜수율도 388.4에서 390.4 ℓ/Ton으로 약간 증가하였다. 또 이때 사용한 기질의 전분가를 분석하였는데, 산가수분해 및 효소가수분해법에 의한 쌀의 전분가 분석치는 큰 차이를 보이지 않았으나 쌀 보리의 경우는 효소가수분해법에 의한 값이 산가수분해법에 비해 10% 정도 낮게 나타났다. 이때 BAN은 T120L에 비해 전분가가 약 1% 높게 나왔다. Various treatments of naked barley with commercial liquefying enzymes have been employed to reduce high viscosity of naked barley in cooking as a raw material for alcohol production and to increase alcohol yield. The enzyme BAN used for cooking and liquefaction of naked barley was able to make a reduction of one third of viscosity and to enhance alcohol yield of 4 l/Ton of raw material than the T120L was. Of course, alcohol yield depended in part on the applied saccharifying enzymes. The low temperature cooking of naked barley with BAN was favorable compared with high temperature cooking of both of reducing viscosity (210 vs. 237 cp) and final alcohol yield (Yp/so; 0.397 vs. 0.395 g/g) in industrial scale.

섬록암폐석을 이용한 폴리머 콘크리트의 특성 및 제품 개발

김기락,최동순,연규석,주명기,김남길 강원대학교 석재복합신소재제품연구센터 1997 석재연 논문집 Vol.2 No.-

우리나라에서는 각종 광산으로 부터 폐석이 다량으로 발생되고 있다. 이와같은 폐석의 부가가치를 높일 수 있는 방안의 모색이 절실한 실정이다. 따라서 본 연구에서는 강원도 춘천지역의 섬록암 광산에서 다량으로 발생되고 있는 폐석을 활용하여 고강도이며, 내구성이 우수한 폴리머 콘크리트를 제조하고, 이에 대한 물리·역학적 특성을 실험적으로 구명하였다. 또한 섬록암 폐석을 이용한 폴리머 콘크리트를 사용하여 플륨, 경계석, 보도블럭, 기와 등과 같은 공장제품을 제조하여 이에 대한 효율적 활용 방안을 제시하였다. Large amount of mine waste have been produced and acumulated from various mining works in korea. Mine wastes causes many adverse invironmental impacts and it is urgently required t develop methods to increase its value by resuing in construction materials and other products. The dbjectives of the study were to develop a high strength and durable high quality polymer concrete by using Diorite mine wastes that are produced from mines in Chunchon area, and to experimentally test the physical and mechanical properties of the concrete. Also, effective reuse methods for the Diorite mine wastes were suggested by developing flumes, curb stones, foot path blocks and roof tiles with the polymer concrete.

각종 필터를 이용한 음질개선에 관한 연구

홍수기,박명철 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-