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초등학교 실과교과에서 목공일하기 단원의 지도방법 및 표준 시간에 관한 연구
김삼진,김채복 한국경영과학회 1996 한국경영과학회 학술대회논문집 Vol.- No.2
This paper addresses the time and motion study on the woodworking in the primary school. Time study by stopwatch is performed for calculating the standard time of woodworking. The operator process chart is developed for better illustration and teaching methodology. The purpose of this study is to present a good guideline for woman teachers or beginers(teachers), as well as to provide how much time units are adequate for a special woodworking unit of practice art. According to the result, the contribution of this paper is very much and it is very useful for both teachers and students.
Effects of Cr Doping on the Electronic Structure of MnTe
김삼진,김광주,이정한,이희정,윤정범,정명화,김우철,김철성 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.2
The effects of Cr doping on the electronic structure of semiconducting MnTe have been investigated by using electron and optical spectroscopies. All CrxMn1-xTe samples grown as polycrystalline films by molecular beam epitaxy on Si(100) substrates showed a NiAs structure with little change in lattice parameters for x ≤ 0.15. X-ray photoelectron spectroscopy and spectroscopic ellipsometry results suggest the existence of spin-polarized Mn d bands in CrxMn1-xTe. The majority- and the minority-spin d bands are likely to be located ∽4 eV below and ∽3 eV above the Fermi level, respectively. The direct optical-band-gap of CrxMn1-xTe is found to gradually decrease with increasing x in the infrared region. A ferromagnetic behavior was observed for the CrxMn1-xTe films. The possible origin for the ferromagnetism is the coupling of Cr spins mediated by spin-polarized holes in the valence bands created through the hybridization between Te p and Cr d states. The effects of Cr doping on the electronic structure of semiconducting MnTe have been investigated by using electron and optical spectroscopies. All CrxMn1-xTe samples grown as polycrystalline films by molecular beam epitaxy on Si(100) substrates showed a NiAs structure with little change in lattice parameters for x ≤ 0.15. X-ray photoelectron spectroscopy and spectroscopic ellipsometry results suggest the existence of spin-polarized Mn d bands in CrxMn1-xTe. The majority- and the minority-spin d bands are likely to be located ∽4 eV below and ∽3 eV above the Fermi level, respectively. The direct optical-band-gap of CrxMn1-xTe is found to gradually decrease with increasing x in the infrared region. A ferromagnetic behavior was observed for the CrxMn1-xTe films. The possible origin for the ferromagnetism is the coupling of Cr spins mediated by spin-polarized holes in the valence bands created through the hybridization between Te p and Cr d states.
Diluted Ferromagnetic Semiconductor in a Cr-Based MnTe Thin Film
김삼진,김철성,Jungbum Yoon,Kwang Joo Kim,정명화,Sung Hwan Bae,김우철 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.2
Mn1-xCrxTe (x = 0.05, 0.1, 0.15), a single phase of high crystalline quality, was successfully grown on a Si(100):B substrate by using molecular beam epitaxy (MBE). An investigation on the magnetic and the electric transport properties of the Mn1-xCrxTe (x = 0.05, 0.1, 0.15) films shows ferromagnetic properties unlike antiferromagnetic bulk MnTe materials. The temperature dependence of the magnetic susceptibility in the film with x = 0.10 exhibits a sharp ferromagnetic transitions at around 175 K. An obvious semiconducting behavior is shown in the temperature range from 20 K up to 300 K. Our X-ray results and magnetization data have verified the ferromagnetism for preparing Cr-cluster-free magnetic semiconductor thin films as candidate materials for potential spintronic applications.
김삼진,오율자 漢陽大學校 體育科學硏究所 1994 體育科學 Vol.14 No.14
We should maintain firmly our stance in order to cope with any prejudice or any belief in terms of the process of dance socialization. At a time, in the field of sports sociology, it has majorly been projected in the sphere of learning of social science for a needed methodology for the subject sol- ution and not been established a characteristic knowledge and methodological sys- tem by accepting with almost non-criticism, therefore, the process of dance socialization should be emphasized on this, and making firmness a position of one of the part as a individual sphere of learning among the sports sociology, and then it, in its own way, should be needed to develops with deepest concerns to which we study a various variable factors with proper methodology on what shall we do a objective of study and of interesting relations on the process of dance socializtion of dancer together with a broaden understanding over the pre-existing sports sociology in order to build a creative and systematic knowledge system. The people who are living in mordern society can't overlook the society, there-fore we should enhance many things such as social nature, cooperation, esthetic sense, imaginative power and emotion by means of direct participation(a work of performance and a class) and indirect participation(viewing of artistic work, the affiliation of an aid association) which can be achieved through dance. It is very essential for goverment to devise and develop nationwide dancing program. When· it comes to our proposal for the future researcher, we should come up with well-planned research blueprint.