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.

생산량을 고려한 부품-기계 셀 형성에서의 퍼지이론 이용

김홍배,김재한 慶星大學校 1994 論文集 Vol.15 No.2

This paper deals with Machine-Part Group Formation in Group Technology. In order to consider uncertainty and impreciseness in Machine-Part Group Formation, this paper introduces Fuzzy Theory. In this paper we consider production volume in determination of fuzzy similarity coefficient. Although there is no proper performance measure, Fuzzy similarity coefficient proposed in this paper consider production volume and the result of this study can applicable to real life cell formation.

MOS FET에 있어서 Hot-Electron 放出電流의 解析

金弘培 淸州大學校 1982 論文集 Vol.15 No.2

This paper discusses the analysis of Hot-Electron emission current in MOS FET using the numerical method. The discussion begins with Hot-Electron emission current Model and use the normal MOSFET and LDD (Lightly Doped Drain). The emission probability is a function of substrate doping profile, substrate voltage, gate voltage, and lattice temperature. It is shown how LDD can be used to reduce the Hot-Electron emission current.

3종 페라이트/고무 복합형 전파흡수체에 있어서 재료정수의 주파수 의존성

김철한,전홍배,유영준,사공건 東亞大學校 1999 東亞論叢 Vol.36 No.-

In this study, ferrite/rubber composite specimens have prepared by molding and curing the mixture of matrix silicon rubber and three kinds of filler particle Mn-Zn/Ni-Zn/Ni₂Y ferrite which are synthesized by the coprecipitation mehtod. The mixing ratio of three kinds of ferrite filler paticle gave variety to adjust the material constant of composite microwave absorbers. Material constants of composite specimens were calculated from the measured variables(s-parameter) over the frequency range from 1 to 12 GHz by means of Network Analyzer(HP8722D) with a co-axial type air line. The reflection loss was calculated from material constants on the impedance matching map utilizing simplex method. By chaging mixing ratio of three kinds of ferrite filler particle, the frequency range over than 20dB were relatively broaden and maximum reflection loss were remarkably reduced to others specimens excepted specimen D. Finally, it could make microwave absorber to be used for C-band frequency range.

Facsimile 信號의 電力 Spectrum 計算에 關한 硏究

金弘培 淸州大學校 1981 論文集 Vol.14 No.2

Power spectrum of facsimile signals are not always readily calculated by present methods. In this paper, a simple and general calculation method of power spectrum by means of power spectral matrices derived directly from transition probability matrices defining pulse sequences is presented. To demonstrate the validity of the method, power spectrum of facsimile signals have been calculated.

컨테이너 터미널의 효율적 운영을 위한 의사결정지원시스템

김갑환,김홍배,윤원영,김종훈,권봉재,조지운 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

A decision support system is introduced for the efficient operation of port container terminals. It consists of ship planning subsystem, yard planning subsystem, resource management subsystem, real-time control subsystem, and simulation subsystem. The system is intended to support the planning process of the planners and the operation process of the administrators in the container terminals. It is assumed that the transfer crances and the yard tractor/trailers are used to handle containers in the marshaling yard. The system is explained in terms of the functions of each subsystem and the data flows among various subsystems.

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.

Johnson 시스템을 이용한 비정규 공정능력의 평가

김홍준,김종배,이우언 대구산업정보대학 2000 논문집 Vol.14 No.2

All indices that are now in use assume normally distributed data, and any use of the indices on non-normal data results in inaccurate capability measurements. In this paper, suggested two general approaches for estimating capability for non-normal distribution, namely, one based on percentiles, the other on the percentage nonconforming. The Pearson system and the Johnson system are selected as the model for non-normal process capability index calculation. Especially, the Johnson system can be used calculate percent out of specification. In this paper, We find a difference the Pearson system than the Johnson system by case study.

자동차용 핀-관 열교환기의 제작 및 열성능 향상에 관한 연구

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

Naphthalene sublimation technique is employed to investigate the heat transfer enhancement of fin-tube heat exchangers using vortex generators. Experiments are performed for the fin-circular tube heat exchanger with and without vortex generators, and fin-flat tube heat exchanger with and without vortex generators. Local and spanwise averaged heat transfer coefficients are measured on the surface of fin, and compared with those obtained without vortex generator. Average heat transfer coefficients of fin-flat tube heat exchanger are much lower than those of fin-circular tube heater exchanger. On the other hand, fin-flat tube heat exchanger with vortex generators has a little higher heat transfer value than fin-circular tube with vortex generators. Friction loss for four types of heat exchanger are also measured and compared.