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박진규,정의영,김경호 대한전자공학회 1994 전자공학회논문지-A Vol.31 No.9
In this paper, we desribe a new system, called BEST, that is used to develop a macromodel or behavioral model easily. It automatically calculates the component values of macromodel represented by equations to satisfy the given specification. Also, it gives the way to analyze both the behavioral model and transistor level circuit, and then compare the analysis results of them to check the correspondence under specific temperature and bias condition, and BEST optimizes the component values of macromodel. Other feature is to characterize MOSFET as switch model which consists of PWL-RC network. Finally, it is possible to generage multi-level netlist which consists of macro/switch/transistor level circuits, and user can determine the trade-off between simulation speed and accuracy. With the graphic user interface form of macromodel development system described above. BEST enable designers to make macromodel by themselves and to uas it. We applied BEST to develop the macromodel for the test circuit and got the 18.6 times simulation speed up with preserving the accuracy within 10% compared to the conventional transistor level circuit simulation. Also, applicability of optimization capability was verified.
전략적 기획을 통한 대학의 교육 및 연구 기능 강화 방안
박진규,Park, Jin-Gyu 한국대학교육협의회 1996 大學敎育 Vol.80 No.-
대학을 행정과 경영의 대상으로 삼아 자체의 조직과 위치해 있는 사회적 환경요인을 체제적으로 분석하여 대학의 위기를 극복하려는 '전략적 기획'은 1960년대 이후 대학조직에 대한 새로운 접근으로 부상하고 있다. 전략적 기획의 관점에서 볼 때, 대학의 전통적 기능인 교육과 연구활동의 활성화 문제는 교수 개개인 혹은 대학내 특정 집단이 독자적으로 감당할 것이 아니라 대학이 변화하는 사회 환경을 실증적으로 분석한 후, 그 결과에 기초하여 기관적 차원에서 대처해나가야 할 문제라 할 수 있다.
Effect of Panak Ginseng on Biliary and Urinary Excretion of Benzo(a)Pyrene in Rat
박진규,고지훈,Park, Jin-Kyu,Ko, Ji-Hun Korean Society for Biochemistry and Molecular Biol 1991 한국생화학회지 Vol.24 No.4
쥐에서 Benzo(a)pyrene(BP)의 담즙 및 뇨배설에 미치는 인삼의 영향을 관찰하였다. 인삼의 물추출물(total water extract, TWE, 2550 mg/kg b.w.)을 3일간 경구투여 후 $[^3H]$BP(2mCi/ mmol)을 최종 투여한 다음날 꼬리정맥 주사하여 담즙으로 배설되는 방사능 표지 화합물을 조사한 결과 인삼 TWE 처리군에서는 담즙을 통해 배설되는 BP의 양이 대조군보다 29% 정도 담즙산 유출량의 변동없이 감소함을 확인하였다. 반면에 뇨로 배설되는 BP의 수용성 대사물질들의 양은 관찰기간내에 대조군보다 약 25% 증가하였다. 이와 같은 결과는 BP의 배설에 있어서 BP 대사의 율속단계인 산화단계가 인삼투여로 억제되어 장간순환(entero hepahatic circulation, EHC)되는 BP의 반응성 돌연변이 물질들을 궁극적으로 뇨를 통해 더 배설시킬 수 있다는 것을 시사한다. The biliary and urinary excretion of benzo(a)pyrene(BP) were investigated in the rat with a view to determining the effect of Panax ginseng C.A. Meyer. After pretreatment of rats with crude total water extract (TWE) of ginseng (250 mg/kg b.w., p.o) for 3 consecutive days, $[^3H]$BP (2mci/mmol) was injected into i.v. at the 1st. day after the last treatment. The biliary excretion of BP in ginseng treated group was reduced to 71% of the values of the control without any specific change of bile flow, while the urinary excretion of BP was increased by about 25% than that of the control value within the period of observation. Hence, under the conditions of the present study, these results suggest that the oxidative metabolism which is rate limiting in the excretion of BP was depressed by ginseng treatment and the proximate mutagenic metabolites of BP which undergoes an entero hephatic circulation (EHC) might also be eventually cleared by the urinary excretion although the major route of excretion of BP and its metabolites via bile.
박진규,이원재,김용준,이남훈,유문현 한국폐기물자원순환학회 2014 한국폐기물자원순환학회지 Vol.31 No.8
The IPCC methodology for estimating methane emissions from a solid waste landfill is based on the first order decay (FOD) method. One emission factor in the model is the methane generation potential (L0) that is estimated from the amount of decomposable degradable organic carbon (DOC) in a solid waste landfill. L0 is estimated based on the fraction of DOC in the waste, the fraction of the degradable organic carbon that decomposes under anaerobic conditions (DOCf), methane correction factor (MCF), and the fraction of methane in generated landfill gas (F). The other emission factor is the methane generation rate constant (k). The IPCC recommended that every country needs to develop country-specific key parameters (DOC, DOCf, k) more appropriate for its circumstances and characteristics. The objective of this research was to investigate the greenhouse gas emission factor (k) and parameters (DOC, DOCf) for wood wastes in a solid waste landfill. To investigate DOC, DOCf, and k for wood wastes, the biodegradable rate of wood wastes was determined by comparing the composition of excavated samples (L-1, L-2) with their fresh ones (F-1, F-2). The DOC values were found to be 48.36% and 45.27% for F-1 and F-2, respectively. It showed that the IPCC default value of DOC for wood wastes is appropriate for estimating methane emission. The maximum DOCf (0.17 and 0.18) or each wood waste excavated from G landfill was found to be lower compared with those for IPCC. The IPCC provided that default values of DOCf 0.5. The k values were found to be 0.0055 and 0.0058 year−1 for F-1 and F-2, respectively. The result confirmed that the biodegradation rate of wood wastes was very slow due to its lignin.