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신용진,박노국,송문익 한국산업경영시스템학회 1992 한국산업경영시스템학회지 Vol.15 No.26
Today, manpower is used as a major factor in the production of service industry that is on the increasing trend. So the research on manpower structure have been regarded as a important field. The research on personnel scheduling, however, have got de-emphasizeed as compared wi th the field of manufacturing scheduling. As the increasing trend of service industry, an appropriate personnel scheduling for each type of service industry is needed urgently. This paper deals with nurse scheduling problem in the field of personnel scheduling. We aim at developing prototype of the expert nurse scheduling program which is easy to use when scheduling without help of expert, and satisfies the various request of hospital scheduling policy and nurse scheduling.
이용찬,문현옥,진성빈,신용진 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-
In This thesis, the magnetoimpedance effects of a FeCoSiB amorphous wire has been studied. The prepared negative magnetostrictive amorphous magnetic wire has the composition of (Fe0.06C0.94)72.5Si12.5B15. To alleviate the stress applied to the wire during its fabrication, we annealed the sample wire at the temperature(460℃/30min) in order to relive the internal stress. The length and the diameter of the amorphous wire are 7[㎝] and 50[㎛·ø], respectively . At the exciting current of 250[㎃] flowing through the sample wire, we examined the frequency dependence of the voltage between the both ends and the dependence of the impedance changing ratio on the external magnetic field varying from 0 to 10[Oe]. Our experimental results confirm that the amorphous wire has a good characteristics enough to be magnetic sensor.
정승우,서강수,강재덕,신용진 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-
This thesis has studied the magnetoresistance effects of zero magnetostrictive amorphous magnetic films. First, we selected ?? to have optimal composition of zero amorphous magnetic films. The films were fabricated by a sputtering method at high frequency. After we annealed the films in a about 150[Oe] of magnetic field and in the temperature (320℃/30min) in order to relive the internal stress and to derive the magnetoanisotropic. Then, we investigated the magnetic properties and magnetoresistance effects under external magnetic field. As the results we found excellent magnetic characteristics(μ=3,380[H/m]) and magnetorestitance changingrate(1.76[%/Oe]). Consequently, as a result of relations of managnetoresistance changing rate to external magnetic field and magnetic properies, we find that the zero magnetostrictive amorphous magnetic film can be used as a magnetic sensor material.
정왕일,이용찬,정승우,신용진 明知大學校 産業技術硏究所 1998 産業技術硏究所論文集 Vol.17 No.-
In this study, we deal with the effect on magnetic properties when Nd is added to Sr·ferrite bonded magnet. First, we choose ??, which is nonstoichiomatric composition, as specimen ferrite. Then, we add 5wt% polyvinyl alcohol and calcinate at 1225℃ under N₂ environment for carbon coating on chemical compound specimen. After that we obtain 1.2㎛ single domain powder through grinding process for 18 hours. The 90wt% Sr ferrite powder is well mixed with silane coupling and calcium stearate of 1wt%. Then, it is kneaded by using polyamide12 as a binder and is pelleted. After adding Nd-Fe-B powder to the pelleted specimen, we injection-mould it under magnetic field by using anisotropic mould. Especially, when we add 13wt% Nd-Fe-B powder to the polyamide12, we obtain excellent magnetic propertiecs which are ??, Br=3.16KG and ??.
X대역(帶域) μ-파에 의한 Nickel-Ferrite 의 강자성(强磁性) 공명흡수(共鳴吸收)
신용진,정재선 고려대학교 공학기술연구소 1973 고려대학교 생산기술연구소 연구보고 Vol.4 No.1
As the first sample, nickel ferrite film was prepared by arc-plasma torch consisted of jetting flame containing 90 oxygen or more. And as the second sample, single crystal of nickel ferrite was grown from Bridgeman method under oxygen pressure of 5 atm. and flux method in air. These ferrites were submitted to the measurement of the density, saturation magnetization, magnetic resonance line width (ΔH) at X-band and crystal orientation as well as the observation of the microstructure.
신용진,문형욱,진성빈,정왕일 한국전기전자재료학회 1997 電氣電子材料學會誌 Vol.10 No.5
This research has been performed for the fabrication of high quality ferrite plastic magnet. The magnetic properties of S $r_{5.9}$F $e_2$ $O_3$ ferrite bonded magnets by injection moulding with a variety of applied magnetic field were investigated. 0.3wt% CaCO3, 0.2wt% $SiO_2$, 0.5wt% $Al_2$ $O_3$and 0.5wt% N $a_2$ $SiO_3$are added in order to improve the magnetic properties of Sr-ferrite plastic magnets during the powder fabrication. For carbon coating on chemical compound specimen, 5wt% polyvinyl alcohol is added, and then calcinated under $N_2$ environment of 12$25^{\circ}C$. The particle size is distributed from 0.9~1.2${\mu}{\textrm}{m}$ which approximates to the single domain. The obtained Sr ferrite powder is well mixed with silane coupling and calcium stearate of 1wt%. Nest, the specimen is pelleted after kneading each of them with polyamidel2 as a binder. When the temperature of injection and mould were 25$0^{\circ}C$ and 8$0^{\circ}C$ respectively at injection pressure of 200kgf/$\textrm{cm}^2$, the degree of orientation was 85.3% under the applied magnetic field of 12kOe. As the results, when the packing density of Sr ferrite powder was 90wt%, the magnetic properties of Sr ferrite bonded magnet were follows : $_{B}$ $H_{c}$=2.41kOe, Br=3.1kG, (BH)$_{max}$=2.21MgOe. Especially, the Sr-ferrite bonded magnet with 10wt% N $d_2$F $e_{14}$B additive were as follows : $_{B}$ $H_{c}$=2.57kOe, Br=3.14kG and (BH)$_{max}$=2.39MGOe.GOe.GOe.GOe.e.
신용진 대한전기학회 1983 전기의 세계 Vol.32 No.11
O&R사(Orange and Rockland Utilities, Inc.)는 뉴욕주의 Pearl River에 위치한 발전설비용량 1010MW의 전력회사로서 뉴욕주동남부와 뉴저지주북부 그리고 펜실바니아주 동북부의 약1,350평방마일의 지역에 전기와 천연가스(Natural Gas)를 공급하는 회사이다. 1980년 최대전력수요는 여름철이 736MW, 겨울철이 570MW이었고, 연간판매전력량은 3655백만kwh였다. 에너지관리시스템(EMS)으로는 SEL 32/75 컴퓨터를 사용한 웨스팅하우스사의 Dual Image 32 System이 설치되어 있는데 이 시스템의 특징과 설비구성에 관해 소개하고자 한다.