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도서관경영(圖書館經營)에 있어서의 시스팀 분석기법응용(分析技法應用)에 관한 연구(硏究)
권기원,Gweon, Gyi-Won 한국비블리아학회 1974 한국비블리아학회지 Vol.2 No.-
It needs to put into practice the systems analysis in the analysis of some operations and status of library for the purpose of systematizing the work of reforming in the new easier form to process, to storage, to retrieve and to make use of the increasing informations and data of library. In this study, some of systems which are generally using in every library was caught in the case study of K university library. Having analyzed them with the two methods of the flowcharting and mathematical analysis, we found the obstructive factors in operation. As the result of this research, it was gained the new system as the alternative one. A. Alternative System B. Advantages of alternative systems 1. In the reference room When it converts the present system into the new system, it can profit 6.771 won/user (13.815won-7.044won=6.771 won). Therefore, a half the average required cost of the present system can be saved. If this saving would be alloted for the cost 33,000won required to make the cataloging cards, it would be taken for 94 days (33,000 won ${\div}$ 6,771 won/user=4,874users. 4,874users ${\div}$ 52users/day=94days) to get it. The saving cost/year by the new system will be 95,417 won, and in the first year the initial cost (33,000won) reduces the saving cost to 62,417won. 2. In the periodical room The average required time for using the materials of the present system is 17 minutes/user and the average required cost/user is 23.775won, while the average required time of the new system is 4 minutes and the average required cost/user is 5.33won. Therefore, the new system has profit 4 times of the present system. Accordingly, it occurs when the dispersed periodical materials get together. 3. In the classification and cataloging When one processes - the oriental books - by the Linear Programming Technique, the maximum of the process can be increased from 11.6 volumes per librarian of the present system to 12 volumes per librarian of the new system increased 0.4 volume in a day, and cataloging by the manual printer can be shorten from 3 minutes per card of the present system to 1.5 minutes per card of the new system. Consequently, we can complete the other operations (books equipment, updating of cataloging cards, etc.) with 141 minutes which are saved in the course of the afore-mentioned works. 4. In the status of collections The average growth rate of 4 years from 1968 to 1971 is 9.825 %, and that of the purchased materials is 6.2% similar to the advanced nations, but it has the different position from 215,000 volumes by the Standard Degree for Establishment of College and University, and the difference between the total collections 151,671 volumes and Dunns' growth model ($N_t=N_oe^{-at}$) claimed by Leimkuhler 155,297 volumes in 1971 is 3,626 volumes, and for the purpose of compensation the difference, we found the fact that it needs to have the increased budget of 24~30% per year, Thus, if the budget of 24~30 % per year. Thus, if the budget would be increased per year as the rate of the afore-mentioned figure, it would be reached at the Standard Degree for Establishment of College and University in 1975, and thereafter, it can be decreased to the lebel which is able to maintain the growth rate of 5~6% per year.
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정동원,김귀식 濟州大學校 産業技術硏究所 1998 산업기술연구소논문집 Vol.9 No.2
Finite Element Method is applied to the determination of the deformed bulge profile and strain distribution during upset forming of cylindrical billets. From the results of simulation. The bulging along the z-axis becomes more severe with increasing height reduction and with increasing friction at the die-material interface. The present method can be used for the simple prediction of the deformed shape and strain distribution in upset forging of cylindrical billets with dissimilar frictional conditions at the die-material interfaces.
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In situ hybridization 을 이용한 전배자의 β - retinoic acid receptor 의 분포에 관한 연구
한순영,김규원,이세윤,신재호,박귀례,강창모,김판기,장성재 한국유전학회 1993 Genes & Genomics Vol.15 No.4
Retinoic acid (RA) is known to be teratogenic in mammals causing a range of defects including abnormalities in craniofacial development. To investigate the effect of RA during organogenesis, in situ hybridization with digoxigenin labeled probe was used to study the localization of RAR-β transcripts in the rat embryos from day 10.5 to day 12.5 of development. Day 10.5 old rat embryos were exposed to all trans-retinoic acid for the culture period (48hrs). Embryonic growth was retarded at any concentration of RA. Hypoplasia of branchial arches and short limb bud occurred commonly. RAR-β transcripts were distributed in anterior facial mesenchyme, branchimal arches, otic area, mesonephros and neuroepithelial lining cells. Distribution in vitro was not different from that of in vivo. These results leave open the possibility that RAR-β is involved in mediating the effects of applied retinoic acid upon facial development. The level of expression was shown in the group treated with 30㎍/㎖ most extensively and was reduced in the group of 3㎍/㎖, vehicle control and non-treated control gradually. Clear changes in the expression of RAR-β were detectable after RA treatment in a dose-dependent manner.
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