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Kim, Tae Heon,Jeon, Byung Chul,Min, Taeyoon,Yang, Sang Mo,Lee, Daesu,Kim, Yong Su,Baek, Seung‐,Hyub,Saenrang, Wittawat,Eom, Chang‐,Beom,Song, Tae Kwon,Yoon, Jong‐,Gul,Noh, Tae Won WILEY‐VCH Verlag 2012 Advanced Functional Materials Vol.22 No.23
<P><B>Abstract</B></P><P>It is demonstrated that electric transport in Bi‐deficient Bi<SUB>1‐<I>δ</I></SUB>FeO<SUB>3</SUB> ferroelectric thin films, which act as a p‐type semiconductor, can be continuously and reversibly controlled by manipulating ferroelectric domains. Ferroelectric domain configuration is modified by applying a weak voltage stress to Pt/Bi<SUB>1‐<I>δ</I></SUB>FeO<SUB>3</SUB>/SrRuO<SUB>3</SUB> thin‐film capacitors. This results in diode behavior in macroscopic charge‐transport properties as well as shrinkage of polarization‐voltage hysteresis loops. The forward current density depends on the voltage stress time controlling the domain configuration in the Bi<SUB>1‐<I>δ</I></SUB>FeO<SUB>3</SUB> film. Piezoresponse force microscopy shows that the density of head‐to‐head/tail‐to‐tail unpenetrating local domains created by the voltage stress is directly related to the continuous modification of the charge transport and the diode effect. The control of charge transport is discussed in conjunction with polarization‐dependent interfacial barriers and charge trapping at the non‐neutral domain walls of unpenetrating tail‐to‐tail domains. Because domain walls in Bi<SUB>1‐<I>δ</I></SUB>FeO<SUB>3</SUB> act as local conducting paths for charge transport, the domain‐wall‐mediated charge transport can be extended to ferroelectric resistive nonvolatile memories and nanochannel field‐effect transistors with high performances conceptually.</P>
노태헌(Tae-Heon Noh),이윤석(Yun-Seok Lee),전하용(Ha-Yong Jun),정민수(Min-Soo Jung) 한국멀티미디어학회 2008 한국멀티미디어학회 학술발표논문집 Vol.2008 No.1
현대 사회의 홈 네트워크는 이미 우리의 일상 생활속에 깊숙이 들어와 있으며, 이러한 홈 네트워크는 사용자로 하여금 각종 홈 디바이스에 대한 접근 및 제어를 위해 개인의 신상 및 생체 정보와 같은 중요데이터가 활용되어 지고 있다. 이러한 환경에서 보안은 단순히 각 가정에 있는 장비를 접속하여 제어하는 제어권한에 대한 것뿐만 아니라, 홈 네트워크 보안 정책에 의한 홈 디바이스의 접근 방식과 미들웨어 상에서의 통합적 디바이스 제어가 필요하게 된다. 본 논문에서는 이러한 홈 네트워크에서의 디바이스 인증 기법과 인증서를 통한 안전한 홈 네트워크 디바이스 인증 기법에 대해 연구한다.
노태헌,Noh, Tae-Heon 대한의료법학회 2010 의료법학 Vol.11 No.2
This article analyzes legal meaning and definition of medical practice examining Korean Supreme Court cases. Until now, there is no right answer about the meaning of medical practice and it is also hard to define of it. Moreover, not only Acts and regulations containing medical practice but also many cases ruling a person who practice medicine, the concept of medical practice involves various meanings. So, it has caused confusion. In order to solve this problem, this article divides the medical practice's meaning into range and nature within prohibition article of the Medical Act about unlicensed personnel who practice medicine. After providing a explanation of the meaning of medical practice according to amendment of the Act, this article disputes the meanings of the several cases following the amendment. And then analyzing non-medical person's unlicensed medical practice and medical person's unlicensed medical practice. In order to provide more accurate legal concept of medical practice when Korean government amends the Medical Act or making policies in this field, this classifying analysis approach should be needed. Looking at the result, in general, Korean Supreme Court has interpreted unlicensed prohibition clause of the Medical Act widely; not only non-medical person's unlicensed medical practice but also medical person's unlicensed medical practice. Therefore, this article suggests that the prohibition clause needs to be careful applying to non-medical practice. Because, in fact, even though there are some necessity of non-medical practice, there are no qualificatory or license system of non-medical practitioner in the Medical Acts or regulations forbidding whole non-medical practices. Furthermore, the Supreme Court has decided medical person's unlicensed medical practice too narrowly, thus it does not keep up with rapid change of medical development and people's demands these days. Regarding this subject, in order to take advantage of medical practitioners effectively and cope with increasing people's medical demands, this article proposes that medical person's unlicensed medical practice only to be prohibited in case of endangering our public health.