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Recognition Decision Criterion in Human Episodic Memory Based on Signal Detection Theory Framework
한상훈 한국인지및생물심리학회 2009 한국심리학회지 인지 및 생물 Vol.21 No.1
Historically, memory studies have focused more on the accuracy of memory reports than the decision processes responsible for translating memory evidence into overt judgments of remembering. Indeed, these decision processes have often been treated as nuisance variables whose influence must be removed so that the accuracy of different observers or experimental conditions can be reliably compared. Recently however, there has been a renewed interest in the mechanisms that support decision-making in memory and the degree to which these mechanisms are flexible, adaptive, and separable. This review examines various characteristics of criterion (role of criterion, variables that influence criterion setting, flexibility or shift of criterion, multiple decision criteria) and recognition memory models in terms of this decision process.
한상훈,조경희,최혜경,임종국,손윤희,이임태,남경수 한국생명과학회 1999 생명과학회지 Vol.9 No.6
한방에서 염증, 종양 억제 등에 사용되는 감초와 흑소두, 감초와 흑대두를 정량으로 배합하여 조제한 약침액을 이용하여 암 억제효과를 살펴 보았다. 발암물질을 무독화 시키는 QR 생성 유도를 생쥐의 간암세포인 Hepa1c1c7과 rat의 간세포 Ac2F에서 측정하였으며, 그 결과 감두약침액, 열수추출액을 처리한 Hepa1c1c7 세포에서 감두약침액과 열수 추출액에 의한 GSH 생성이 증가하였고, GST활성측정에 의하면 Hepac1c7 세포에서 감두약침액에 의한 GST 생성이 증가하였다, 농도별 감두약침액과 역수추출액에 의한 A. castellanii 증식을 살펴 본 결과, 약침수액과 열수추출액이 A. castellanii 증식을 농도 의존적으로 저해하는 효과가 있었다. Gamdutang aqua-acupuncture solution (GAS), Gamdutang water-extracted solution (GWS) and Dae-Gamdutang aqua-acupuncture solution (DGAS) were prepared and tested for chemopreventive potentials. GAS was potent inducer of quinone reductase (QR) activity in Heapa1c1c7 murine hepatoma cells in culture, whereas GWS is less potent. GAS, GWS and DGAS were significantly induced QR activity in cultured rat normal liver cell, Ac2F. Glutathione (GSH) levels were increased about 1.8, 1.0 and 1.1 fold with GAS, GWS and DGAS in Hepa1c1c7 cells, respectively. In addition glutathione S-transferase (GST) activity was increased with GAS, GWS and DGAS. The effects of GAS, GWS and DGAS on the growth of Acanthamoeba castellanii were tested. Proliferation of A. castellanii was inhibited by GAS, GWS and DGAS at concentrations of 1 $\times$ and 5$\times$. These results suggest that GAS has chemopreventive potential by inducing QR and GST activities, increasing GSH levels and inhibition of polyamine metabolism.
한상훈,변근주,김왕구 충북대학교 건설기술연구소 1982 建設技術論文集 Vol.1 No.1
The aim in this presentation is to explore the relationship between optimum design of structures and reliability of structures. In this paper, the concept of probability of failure is explained for a general structural system. The concept emphasized in the paper is the employment of probability of failure constraint in the mathematical programming problem to determine the set of design parameters which minimizes she weight of the truss structures. Specific reliability based optima for multi-member systems are shown for weakest-link structures which fail if any element fails. Several examples of optimization with failure probability constraints are presented, and then the sensitivity of optimum design to reliability level as well as parameters in the reliability analysis is discussed. The results presented indicate: 1) The results indicate the feasibility of using probability of failure constraints in solving for optimum m lti-member structural designs. 2) An important factor influencing the magnitude of the optimum design as well as its member sizes will be the choice of load and strength frequency distributions and their parameters particulary the coefficients of variation. 3) The optimum value increases with both allowable failure probability and increase in coefficients of variation. 4) The classical approach to optimum design using a safety factor to represent conservation often results in unnecessary weight and cost.
기판의 코로나 표면처리에 의한 탄소 나노튜브투명전극의 물성 향상
한상훈,박진석,김부종 한국반도체디스플레이기술학회 2014 반도체디스플레이기술학회지 Vol.13 No.1
In this study, we investigate the effects of corona-discharge pre-treatment on the properties of carbon nanotubes (CNTs) which are used as flexible transparent electrodes. The CNTs are deposited on PET (polyethylene terephthalate) substrates using a spray coating method. Prior to the deposition of CNTs, the PET substrates are corona-treated by varying the feeding directions of the PET substrate and the numbers of treatments. The variations in the surface morphologies and roughnesses of the PET substrates due to corona-treatment are characterized via atomic force microscopy (AFM). Dynamic contact angles (DCAs) of the corona-treated PET substrates are measured and analyzed as functions of the treatment conditions. Also, the sheet resistances and visible-range transmittances of the CNTs deposited on PET substrates are measured before and after bending test. The experimental results obtained in this study provide strong evidences that the adhesive forces between CNTs and PET substrates can be substantially enhanced by corona-discharge pretreatment.