• 한국약용작물학회:학술대회논문집
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• 2008.11a
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• pp.159-160
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• 2008

• Proceedings of the Korean Magnestics Society Conference
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• 2008.12a
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• pp.4.2-4.2
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• 2008

• 한국약용작물학회:학술대회논문집
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• 2008.11a
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• pp.171-172
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• 2008

• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.703-704
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• 2005

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.127-130
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• 2008

A 2.2" QVGA($320{\times}240$) 262,114 color AMOLED module has been developed using digital driving methodology. In this paper, we discuss the development of diver IC which is applied to Digital AMOLED module. Technologies for low cost IC structure and image quality enhancement are presented.

• Archives of Pharmacal Research
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• v.22 no.2
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• pp.202-207
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• 1999

New series of catechol ether type derivatives 5, 6 have been synthesized and applied to biological tests. Even though it is ap preliminary data, some of our target molecules show the promising result against PDE IV inhibition. SAR and biological studies with studies with synthetic compounds will be discussed in detail.

• Proceedings of the Korean Society of Crop Science Conference
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• 2019.09a
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• pp.158-158
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• 2019

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.10a
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• pp.175-175
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• 2021

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.04a
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• pp.96-96
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• 2021

• The Pure and Applied Mathematics
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• v.13 no.3 s.33
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• pp.189-195
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• 2006

Let R be a prime ring with characteristics not 2 and ${\sigma},\;{\tau},\;{\alpha},\;{\beta}$ be auto-morphisms of R. Suppose that $d_1$ is a (${\sigma},\;{\tau}$)-derivation and $d_2$ is a (${\alpha},\;{\beta}$)-derivation on R such that $d_{2}{\alpha}\;=\;{\alpha}d_2,\;d_2{\beta}\;=\;{\beta}d_2$. In this note it is shown that; (1) If $d_1d_2$(R) = 0 then $d_1$ = 0 or $d_2$ = 0. (2) If [$d_1(R),d_2(R)$] = 0 then R is commutative. (3) If($d_1(R),d_2(R)$) = 0 then R is commutative. (4) If $[d_1(R),d_2(R)]_{\sigma,\tau}$ = 0 then R is commutative.