결장 직장암 환자에서 근치적 절제술 후 혈청 CEA치의 변화에 대한 임상적 의의

김영훈,배병노,김기환,한세환,김홍주,김영덕,김홍용 대한대장항문학회 2003 Annals of Coloproctolgy Vol.19 No.6

수출입 컨테이너 장치장 배정을 위한 소프트웨어의 개발

김갑환,김홍배,홍봉희,김기영,배종욱,최진오,김두열,이영기,박영만,박강태,손행대 한국경영과학회 1995 經營 科學 Vol.12 No.3

The Pusan Container Terminal faces a rapid increase in berthing time of container ships as well as in waiting time of external trucks, which is due to an absolute lack of yard space. This research is focused on the development of a decision support system for the planning of the container terminal yard assignment so that the yard space would be utilized most effectively. Efforts should be given to the reasonable assignment of the yard storage and the dynamic adaptation to the ever changing environment. The software introduced here is based o the know-how of the field exports and its framework takes the approach of the hierarchical decision making.

비정규 공정능력의 평가

김홍준,이우언,김종배 대구산업정보대학 2002 논문집 Vol.16 No.-

The main objective of this study are to propose two measure that would be process capability indices and percentage nonconforming for evaluation of non-normal process capability. In this paper we propose an example, a distribution generated from the Johnson family of distributions, to demonstrate how a new process capability index C_(psk) perform in terms of sensitivity to departure of the process median from the target value in comparison with normal process, the Pearson system and the Wright method. Second method show using the percentage nonconforming by the Pearson, Johnson and Burr functions. This example shows a little difference between the Pearson system and Johnson system, but Burr system overestimated than the two systems for process capability. The percentage nonconforming can be related to an equivalent capability indices for a process having a normal distribution. Thus, considering only process capability indices or percentage nonconforming separately is not a valid assessment of process capability, both criteria must be evaluated jointly.

소방시설 관리실태조사에 관한 연구 : 공동주택, 상가건축물, 사무소건축물

김홍배,한상민,이영재,조병선 한국화재소방학회 2001 한국화재소방학회논문지 Vol.15 No.3

현 사회는 안락과 안전을 중요시하고 있다. 그 중, 가장 중요한 부분의 한 부분이 각 건축물에 설치되어 있는 소방시설의 관리와 방화훈련이 얼마나 잘 관리되고 평소 훈련이 되어 있는가에 따라서 화재시에 인명과 재산상의 피해를 극소화 할 수 있다. 따라서, 본 연구에서는 공동주택, 상가건축물 및 사무소건축물 등의 소방시설의 점검실태를 설문ㆍ조사하였으며, 화재시에 대피훈련을 얼마나 숙지하고 있는가를 조사ㆍ분석함으로써 화재시 손실을 최소화 할 수 있는 방법과, 실질적인 점검 및 훈련방법을 제시한다. In a daily life these days, the safety and the comfort are considered very important. As the same as other areas, the good maintenance of fire protection systems and the fire drill plans in buildings can minimize the loss of human life and the property in case of fires. In this paper, a survey has been conducted to investigate the maintenance status of the fire protection systems of apartment buildings, shopping centers and office buildings. Both practical procedures for checking the systems and for fire drills and strategic plans to minimize the losses in case of fires are suggested by analyzing how well the occupants in the buildings acknowledge the evacuation drills when the fire occurs. Keywords : Fire protection system, Fire drill, Apartment buildings, Shopping center, Office building

Alcaligenes sp. GB-77에 의한 Polyhydroxyalkanoic Acid의 생산

김근배,손홍주,이상준 부산대학교 유전공학연구소 1995 분자생물학 연구보 Vol.11 No.-

Polyhydroxyalkanoic acid(PHA)를 생산하는 세균들을 하수처리장의 활성오니로부터 존화배양에 의하여 분리하였다. 이들 중 단일기질로부터 PHA를 생산하는 균주의 생리학적 성질을 검토한 결과 Alcaligenes 속으로 동정되었다. 균체 생육에 최적인 배양온도, pH는 각각 36℃, pH6.8로 나타났으며, 탄소원으로 과당 10g/l, 질소원으로 polypeptone 5g/l, Na_2HPO_4 1×10^-2 M, KH_2PO_4 1.3×10^2 M이었다. PHA 합성을 위한 최적조건을 조사하기 위하여 2단계 배양법을 이용한 결과, 배양온도 36℃, pH6.8, C/N 비 50이 PHA 합성에 최적인 것으로 나타났다. 탄소원을 간헐적으로 첨가하는 유가배양에 의하여 배양 60시간만에 건조균체량 17.4g/l, PHA 9.1g/l를 얻을 수 있었다. 추출, 정제된 PHA는 NMR에 의하여 분석한 결과 PHA/HV copolymer 임을 확인할 수 있었다. For polyhydroxyalkanoci acid (PHA) production, several microorganisms were isolated from sewage sludge. One of them, GB-77 strain, was chosen from its PHA/HV copolymer production on only fructose without cosubstrate. The isolated strain GB-77 was identified as the genus Alcaligenes. Optimal temperature and pH for cell growth were 36℃ and 6.8. Optimal medium composition was 10 g/l of fructose and 5 g/l of polypeptone, 1×10^-2 M Na_2HPO_4, 1.3×10^-2 M KH_2PO_4. To investigate the optimal condition for polyhydroxyalkanoic acid production two-stage culture technique was used; first stage for cell grown and second stage for PHA production on unbalanced growth conditions. Optimal conditions for high PHA production were C/N ratio 50, temperature 36℃ and pH 6.8. To overcome frutose inhibition on cell growth, intermittent feeding fed-batch culture technique was used. Total cell concentration was 17.4 g/l with 9.1 g/l of PHA. The purified PHA was identified PHA/HV copolymer by NMR analysis.

모바일 로봇의 견실제어를 위한 제네틱 알고리즘 개발

김홍래,배길호,정경규,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

This paper proposed trajectory tracking control of mobile robot. Trajectory tracking control scheme are real coding genetic-algorithm and back-propergation algorithm. Control scheme ability experience proposed simulation. Stable tracking control problem of mobile robots have been studied in recent years. These studies have guaranteed stability of controller, but the performance of transient state has not been guaranteed. In some situations, constant gain controller shows overshoots and oscillations. So we introduce better control scheme using Real coding Genetic Algorithm(RCGA) and neural network. Using RCGA, we can find proper gains in several situations and these gains are generalized by neural network. The generalization power of neural network will give proper gain in untrained situation. Performance of proposed controller will verify numerical simulations and the results show better performance than constant gain controller.

中小企業 業務電算化 事例 硏究

金弘培,權赫武 경성대학교 1989 論文集 Vol.10 No.1

다이아몬드 터닝머신을 이용한 알루미늄반사경의 절삭특성

김건희,고준빈,김홍배,원종호 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4

A 110 mm diameter aspheric metal secondary mirror for a test model of an earth observation satellite camera was fabricated by ultra-precision single point diamond turning(SPDT). Aluminum alloy for mirror substrates is known to be easily machinable, but not polishable due to its ductility. A harder material, Ni, is usually electrolessly coated on an Al substrate to increase the surface hardness for optical polishing. Aspheric metal secondary mirror without a conventional polishing process, the surface roughness of Ra=10nm, and the form error of Ra=λ/12(λ=632.8nm) has been required. The purpose of this research is to find the optimum machining conditions for reflector cutting of electroless-Ni coated Al alloy and apply the SPDT technique to the manufacturing of ultra precision optical components of metal aspheric reflector.

상 이동 촉매를 이용한 할로겐화 옥틸과 아지드화 나트륨과의 반응속도에 관한 연구

金昌培,金鍾奎 단국대학교 1986 論文集 Vol.20 No.-

Rates of reaction between chloro and bromooctane and NaN_3 in the presence of quaternary ammomum salts were determined. Second order rate constant for the reaction between ch1orooctane and NaN_3 was 1.31×10 exp(-4) M^-1sec^-l at 85℃ when Aliquat 336, trioctylmethylammonium chloride was used as a catalyst, and values are only slightly increased as the concentration of NaN_3 was increased. In the case of 1-bromooctane, (C_4H_9)_4 NBr was used as a catalyst. First order constants were found to increase more steeply as the concentration of NaN_3 increased. Different behaviors of two catalysts were discussed by comparing with the earlier results from cyanide exchange reactions. Also, it was pointed out that aliquat 336 was a very good catalyst for the synthesis of alkyl azide.

디버터의 열유동 및 열응력 해석

김영완,이상윤,김홍배 여수대학교 1998 論文集 Vol.13 No.2

For the optimal design of plasma facing components of a fusion reactor, the thorough understanding of thermal behavior of high heat flux components are required. The purpose of this research is to investigate the characteristics of heat flow and thermal stress in divertors which are exposed to high heat load varying with time and space. Numerical simulations of heat flow and thermal stress for three types of divertor are performed using finite volume method and finite element method. Respectively, commercial FLUENT code are used in the heat flow simulation, and maximum surface temperature, temperature distribution and cooling rate are calculated. Commercial ABAQUS code are used for calculating temperature distribution, thermal stress, strain and displacement. Through this computer simulation, design data for cooling system and structural are provided.