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김익현 건국대학교 1993 대학원 학술논문집 Vol.37 No.-
It is generally thought that compared with Spinoza's metaphysics, his epistemological questions play a subordinate role in his philosophy. However, in fact, his metaphysical statements were not an end in itself, but rather a necessary first step in the acquisition of knowledge regarding the nature of the human mind. A matter of primary concern of Spinoza was how we can have the true knowledge(idea) and come to the highest blessedness. It is Spinoza's epistemology that justifies his metaphysical statement and, at the same time, prescribes the nature of the human highest blessedness. Making a study of the Spinoza's epistemology, first of all, it is Spinoza's use of the word "idea" that leads us to confusion. Therefore, I make clear the meaning of idea in Spinoza and study the (external and internal) character of the true idea. And I would also like to study how the human being as the finite mode can have true idea, and remedy the mutilated and confused ideas.
김익현,김영규,남기웅,김동완,Minju Park,Haeun Kim,Wookbin Lee,임재영,김종수,김진수 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.4
Nanocrystalline ZnO thin films grown on fluorine-doped tinoxide (FTO) substrates were fabricatedusing the spin-coating method. The structural and the optical properties of the ZnO thin filmsprepared using different sol concentrations were investigated by using field-emission scanning electronmicroscopy (FE-SEM), X-ray diffractometry (XRD), photoluminescence (PL) measurements,and ultraviolet-visible (UV-vis) spectrometry. The surface morphology of the ZnO thin films, asobserved in the SEM images, exhibited a mountain-chain structure. XRD results indicated thatthe thin films were preferentially orientated along the direction of the c-axis and that the grain sizeof the ZnO thin films increased with increasing sol concentration. The PL spectra showed a strongultraviolet emission peak at 3.22 eV and a broad orange emission peak at 2.0 eV. The intensities ofdeep-level emission (DLE) gradually increased with increasing sol concentration from 0.4 to 1.0 M. The transmittance spectra of the ZnO thin films showed that the ZnO thin films were transparent(85%) in the visible region and exhibited sharp absorption edges at 375 nm. Thus, The Urbachenergy of ZnO thin films decreased with increasing sol concentration.