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최광림,최양진,신봉문,강세선 한밭대학교 산업과학기술연구소 1994 논문집 Vol.2 No.-
CV cast iron products was carried out in order to cupola process. CV cast iron products by cupola processing were obtained much more than 50kg/㎣ tensile strength and the excellent structure of CV graphite cast iron and gray cast iron. Casting waster due to the depress of pouring temperature by inoculation was reduced by development (improvement) in cast processing.
孫勝光,南基奉,吳世奎 東新大學校 1997 論文集 Vol.9 No.-
There are many college in born and university in rapid extention in a short time, after 1980s, in Korea, and the structure of the school and department should be lack in the goal of ideal environment as a campus. The campus of the new college to be accomplished by incremental process, in special, have an undefined goal of the structure and character of the school, and it is difficult to escape from the uncertainity of the structure, and cause a missing goal of campus planning and decision-making. In order to trace the undefined process, this article are analyses the campus planning and the construction process of Dongshin University in Naju city, as a case study, its result can be used to get final campus environment. In this article, we can see the process and decision-making by incremental planning and building, and a proposal for remaking of Dongshin University master planning are supplemented.
퍼지 전문가 시스템을 이용한 BLDC 전동기의 자동조정 PID 속도제어에 관한 연구
진광식,윤태성,권세현 國立 昌原大學校 産業技術硏究所 1998 産技硏論文集 Vol.12 No.-
This paper proposes the rule-based expert system with auto-turning of PID controller gain and shows the efficiency of fuzzy expert system for the speed control of BLDC motor. The PID controller gain tuned using RZN(refined ZN) formula to initial tuning and fuzzy expert system to subsequent tuning. The fuzzy expert PID control method proposed in this paper results in the reduction of overshoot, the rapid response and the robustness for disturbances and noise.
임경택,박세권,명광식,김도일 중앙대학교 산업경영연구소 2000 산업경영연구 Vol.9 No.1
워크플로우에서는 기업이 정한 목표를 달성하고, 기업의 현재의 불확실성과 불안정성을 제거하고, 현재의 치열한 경쟁을 극복하고, 장래에 보다 나은 기업이 되기 위해서, 기업의 모든 재 구성원과 자원들 사이에 존재하는 이질적 요소를 조정·조화시킨 후, 유기적으로 결합하여, 조직의 목적을 이루는 것이 중요하다. 본 논문은 크게 두 가지에 초점을 두고 있다. 첫 번째, 프로세스를 최적화시키기 위한 조정 기준을 제시한다. 이 전의 연구들에서는 프로세스를 조정 할때, 대부분 분석가의 직관과 경험에 의존했었다. 그러나, 본 연구에서는 이러한 분석가의 직관과 경험에 의존한 프로세스 조정을 최대한 줄일 수 있는 몇가지 간단하면서도, 강력한, 정량화 된 기준을 제시한다. 두 번째, 워크플로우에, 시간을 소요하는 처리와 하지 않는 처리로 구분 할 수 있으며, 처리 시간을 확률 함수로 파악함으로써 현실세계에 가까운 모델링을 할 수 있는, GSPN(Generalized Stochastic Petri-net)을 적용한 프로세스 모델링 방법을 제시한다. This paper proposes a method to analyze and design for workflow systems called GSWN(Generalized Stochastic Workflow Net), which is based on stochastic Petri-net, and an algorithm for workflow process optimization based on simulation analysis. The proposed modeling method was developed by adding workflow characteristics to stochastic petri-net. The proposed algorithm is consist of 4 major steps such as GSWN step, GSWN to matrix step, block establishing step, and process optimizing step.
김재형,이광세,김정배 인제대학교 1992 仁濟論叢 Vol.8 No.2
Ferroelectric Pb5Ge3011 single crystal was grown from the melt by the Czochra1ski method. From the complex dielectric measurements and the pyroelectric measurements, it was confirmed that Pb5Ge3011 undergoes a displacive second order phase transition at 177 ℃. Arrehnius' activation energy was estimated as 1.2eV from the measurements of electric conductivities. Refractive indices obtained by using the Brewster's law are no=2.111, ne=2.140for λ=6328Å at room temperature and thermo-optical coefficients are 4.26×10-5/℃ in the ferroelectric phase and 2.71×10-5/℃in the paraelectric phase. An impedance relaxation was observed over a wide temperature range, including the Curie temperature. The relaxation was composed of two mechanisms, the one due to a charge carrier hopping Process and the other one resulting from the intrinsic polarization of the ferroelectric material.
鄭萬泰,吳世源,趙民貞,柳一光 광주보건대학 1984 論文集 Vol.9 No.-
This research was studied for the purpose of improving the curriculum of dental hygiene department injunior college and produced some results as follows; 1. The educational aim of dental hygiene department consists in improving students' talents with a view to cultivating dental hygienists necessary to the promotion of people's dental health as well as making a study of the technical Knowledge and theory about the prevention and hygiene of dental and oral diseases, Accordingly these five educational purposes as follows were re-established to achieve two goals. ⓐ Students should be able to do clinical Dental Assiting. ⓑ Students should be able to manage Preventive Dentistry. ⓒ Students should be able to do Dental Health Education. ⓓ Students should be able to guide and develop Public Health dentistry. ⓔ Making students have some qualities to accept the new knowledge and technique of Dental Health. 2. According to the improvement of curriculum, we make the distribution ratio of fundamental studies of developing qualities to technical studies of developing skills at the rate of 4 to 6, In addition we make the proprtion of the theory to the practice of technical subjects at the rate of 6 to 4. ◁표 원문 참조▷
Sei Kwang Hahn,Allan S. Hoffman 한국생물공학회 2004 Biotechnology and Bioprocess Engineering Vol.9 No.3
A biocompatible polyelectrolyte complex multilayer (PECML) film consisting of poly-L-lysine (PLL) as a polycation and hyaluronic acid (HA) as a polyanion was developed to test its use for surface modification to prevent cell attachment and protein drug delivery. The formation of PECML through the electrostatic interaction of HA and PLL was confirmed by contact angle measurement, ESCA analysis, and HA content analysis. HA content increased rapidly up to 8 cycles for HA/PLL deposition and then slightly increased with an increasing number of deposition cycle. In vitro release of PLL in the PECML continued up to 4 days and ca. 25% of HA remained on the chitosan-coated cover glass after in vitro release test for 7 days. From the results, PECML of HA and PLL appeared to be stable for about 4 days. The surface modification of the chitosan-coated cover glass with PECML resulted in drastically reduced peripheral blood mononuclear cell (PBMC) attachment. Concerned with its use for protein drug delivery, we confirmed that bovine serum albumin (BSA) as a model protein could be incorporated into the PECML and its release might be triggered by the degradation of HA with hyaluronidase.