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鄭賢湜 成均館大學校 韓國産業硏究所 1993 韓國經濟 Vol.20 No.1
We used a simple version of the Leontief-augmented pollution model to analyze industrial pollutions of the 65 Korean industries for the period 1980~88. Problems on the existence of non-negative solutions are not the issue for our augmented pollution model since we are assuming that outputs of pollution from pollution-abatement sectors are zero. We also assume in this paper that the tolerated pollution levels are always less than the pollution generated by the industries, so that the existence problems are avoided. In fact we are only concerned with the total pollution emission, which are the sum of pollution abated by the pollution-control sectors and unabated pollution emitted to the final sector. We also assume away pollution emitted by final demand sector. In fact, by focusing on the total pollution emitted, we do not need to distinguish the abated pollution from the tolerated pollution levels. In this simplified model, we are concerned with factors contributing to the increase in pollution emission between 1980 and 1988. We are able to analyze total emission levels of 9 different pollutauts for 65 the industries. The factors responsible for the increase in pollution during the period were dichotomized into two : growth factors and structural factors. The latters were further divided into five categories of changes in structures : domestic final demand, export, import, input techniques, and export production techniques. For the period under consideration, about 60% of the total pollution increase was attributed to the growth factors and the remaining 40% to the structural factors. Among structural factors, domestic final demand and export were important contributors to the increased pollution in that order, while change in production techniques of the export sector contributed to the decrease in pollution.
정현식,이상헌 대한한의학회 2014 대한한의학회지 Vol.35 No.4
Objectives: Advanced malignant melanoma (MM) has a poor prognosis, with an expected 2-year survival rate of 10to 20%. It has long been recognized as an immunogenic tumor, and is worse for elderly patients. Many studies havesuggested that herbal treatments improve immune functions, but few clinical studies have reported on this topic. Patients and History: We present two cases of female patients (72 and 77 years old, respectively) with advancedMM. The 72-year-old female patient was, at first, diagnosed with MM with multiple bone metastases. Shereceived resection of the primary lesion, but refused further chemotherapy. The 77-year-old female patient wasdiagnosed with cutaneous MM of the left heel, with suspicion of sentinel node lymphadenopathy; however, shealso refused any conventional treatment due to old age. Course of Therapy and Results: Both patients were exclusively treated with standardized allergen-removed Rhusverniciflua stokes (aRVS) extract combined with Bojungikki-tang (BT, Bu-Zhong-Yi-Qi-Tang in Chinese orHochu-ekki-to in Japanese). Both patients are still alive and doing well (Feb. 2014), demonstrating that the72-year-old patient has lived for 27 months and the 77-year-old patient has lived for 31 months without diseaseprogression since the aRVS and BT administration. Conclusion: We suggest that the combination of aRVS extract and BT could be a candidate for overcoming thecancer’s immunoediting process especially for elderly MM patients intolerant of conventional treatment.
鄭賢湜 成均館大學校 韓國産業硏究所 1976 韓國經濟 Vol.4 No.-
A dynamic model was presented for a less developed country to analyze the stages of the international indebtedness and payments in the process of its capital formation. Dynamic properties of the model were expressed in terms of a system of differential equations and qualitative solution of the system employing phase diagrams was used to describe the dynamic process. It was shown in the model that the LDC was capital importing country and remained net debtor at the steady-state equilibrium under certain conditions. The hypothesis on the stages of indebtedness supported by such a model as Fischer-and-Frenkel's was not confirmed in our model under different conditions. An implication was that the usual "stages" of the international indebtedness was one of many kinds, which might not be applicable to some LDC's. The model suggested several policy prescriptions forcapital for mation in LDC which are similar to one suggested by Mahalanobis. It showed a possibility that interest payments by LDC on foreign debts might exceed its trade surplus thus making continuous foreign capital inflows inevitable in order to pay interest, an anxiety often expressed by capital importing LDC's.
정현식,Hyunjin Lim,이진석,윤경병 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.4
We analyzed the photoluminescence (PL) peak shift and the anisotropy of dye molecules and dye molecule - zeolite composites as function of the concentration of pyronine B (PyB) molecules. We used PyB dye molecules and zeolite L. The PL of PyB molecules was red-shifted with increasing concentration of PyB molecules. However the PL of PyB incorporated zeolite composite was independent of the concentration. The PL intensity anisotropy value also increased with increasing concentration in these composites. The anisotropy of zeolite - dye composites was about 2.8 at high concentration; which is close to the theoretical anisotropy value of 3. Since the host zeolite protects dye molecules from aggregation, these results are different form the case of dye molecules in a solvent. In addition, we observed the confinement eect of dye molecule - zeolite composites from the blue shift of the PL spectrum.