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조진형,이도경,김상호 금오공과대학교 산업기술개발연구원 2001 産業技術開發硏究 Vol.17 No.-
Box-Cox model by HuIten and Wykoff and T-factor method by Elfar and Whelan, adopted the assumptions of the characteristics of capital assets, and are still widely used today even though their assumptions were weak. We improve the Box-Cox model by combining the existing economic efficiency and depreciation pattern, based on the efficiency curve of marginal productivity and reliability function. Thus, Rayleigh curve which has been used for the reliability of current capital assets was chosen as m efficiency curve. As a result, it was possible to classify the efficiency curves into 4 kinds rather than the existing 3, as well as the types of depreciation curves. In this paper, therefore, the power family of the Box-Cox model which was a non-linear regression model would be identified, by utilizing the reliability functions. In addition, Box-Cox model as a linear model to measure economic depredations. Based on these result it is easy to estimate economic depreciations as well as to test depreciation rates.
최태진 ( Tae Jin Choi ),윤두희 ( Dou Hee Yoon ),김진우 ( Jin Wou Kim ),김시용 ( Si Yong Kim ),조백기 ( Baik Kee Cho ) 대한피부과학회 1998 대한피부과학회지 Vol.36 No.3
Lichen planus is a common, usually intensely pruritic papulosquamous dermatosis with unknown etiology, which may involve the skin, mucous membranes, hair follicles, and nails. Its lesions are usually a localized form but generalized ones are an unusual presentation of lichen planus. We report herein three cases of generalized lichen planus in one male and two female patients, which was diagnosed on clinical and histopathological examinations in all cases. (Korean J Dermatol 1998;36(3) 493-497)
Jing Jin,Yuanjin Chen,Dechuan Wang,Lingman Ma,Min Guo,Changlin Zhou,Jie Dou 대한약학회 2018 Archives of Pharmacal Research Vol.41 No.6
Baicalin was identified as a neuraminidase (NA)inhibitor displaying anti-influenza A virus (IAV) activity. However, its poor solubility in saline has limited its use inthe clinic. We generated sodium baicalin and showed that itexhibited greatly increased solubility in saline. Its efficacyagainst oseltamivir-resistant mutant A/FM/1/47-H275Y(H1N1-H275Y) was evaluated in vitro and in vivo. Resultsshowed that 10 lM of sodium baicalin inhibited A/FM/1/47 (H1N1), A/Beijing/32/92 (H3N2) and H1N1-H275Y inMDCK cells in a dose-dependent manner, with inhibitoryrates of 83.9, 75.9 and 47.7%, respectively. Intravenousadministration of sodium baicalin at 100 mg/kg/d enabledthe survival of 20% of H1N1-H275Y-infected mice. Thetreatment alleviated body weight loss and lung injury. Moreover, sodium baicalin exerted a clear inhibitory effecton NAs. The IC50 values of sodium baicalin against H1N1-H275Y and cells-expressing A/Anhui/1/2013-R294K(H7N9-R294K) NA protein (N9-R294K) were 214.4 lMand 216.3 lM. Direct interactions between sodium baicalinand NA were observed, and we simulated the interactionsof sodium baicalin with N9-R294K and N9 near the activesites of OC-N9-R294K and OC-N9. The residues responsiblefor the sodium baicalin-N9-R294K and sodiumbaicalin-N9 interactions were the same, confirming thatsodium baicalin exerts effects on wild-type and oseltamivir-resistant viral strains.
김진우,이현정,오신택,윤두희 대한피부과학회 1999 대한피부과학회지 Vol.37 No.11
We report a rare case in which two tuberculids, erythema induratum and papulonecrotic tuberculid, occured together. A 15-year-old Korean girl had two types of clinically distinct lesions; painful subcutaneous nodules on the legs and pruritic necrotic papules on the trunk and extremity. Mantoux test showed a strong positive reaction. Histopathologic findings of the subcutaneous nodule and necrotic papule were consistent with erythema induratum and papulonecrotic tuberculid, respectively. There was no extracutaneous focus of tuberculosis. Polymerase chain reaction for tuberculosis bacilli in both lesions revealed negative results. Antituberculous therapy brought a rapid clinical improvement of lesions within a month.
현백률 및 1인 가구 비중 변화를 반영한 쌀 감모율 재추정
이두영 ( Dou Young Lee ),김종진 ( Jong-jin Kim ),문동현 ( Donghyun Moon ) 한국식품유통학회 2022 한국식품유통학회 학술대회 Vol.- No.하계
The purpose of this study is to re-estimate the rice loss ratio that predicts rice prices in the harvest season most by considering the changes in the milling ratio and the proportion of single-person households. The rice loss ratio was re-estimated based on an inverse demand function using variables that can affect the rice prices. The simulation result shows that the rice loss ratio is estimated at 2.3% and suggests that the rice loss ratio currently used is likely to underestimate the rice supply situation.
Implementation of DSTFCs in MIMO MB-IR-UWB System
Zheng Dou,Zijing Jin,Yun Lin,Zhiqiang Wu,Zhiping Zhang 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.3
This paper implements differential space-time-frequency codes (DSTFCS) to multiple-input multiple-output (MIMO), multi-band impulse radio ultra-wideband (MB-IR-UWB) system. Four scenarios of the system operating mode have been put forward and combination of DSTFCs and the system has been studied in this paper. Through simulation, a comparison of BER performance among different scenarios and channel statements is analyzed. In addition, considered inter-symbol interference (ISI), the simulation on system with ISI and without ISI is given. Finally the conclusion that scenario 3 is more suitable to the proposed MIMO MB-IR-UWB system for it being less sensitive to ISI has been drawn.