방사성의약품인 99mTc-Tetrofosmin의 분할사용 및 표지효율에 관한 연구

안성민 京畿專門大學 1998 京畿專門大學 論文集 Vol.- No.26

In the nuclear medicine graphy, 99m7c-Tetrofosmin and 99m7c-Sestamibi of Radiopharmaceutical are widely for Heart Single Photon Emission Computed Tomography(SPECT) Mammography and tumor scan. But one problem is that those products are not yet developed, as the result, the cost of these materials and tests is expensive. Under IMF, we should study the way of divisional use of driving in each hospital, the purpose of material cut and quick service in patient's diagnosis, among others, 99m7c-Tetrofosmin uses an inert gas. We conducted Radiochemical Purity Efficiency and Fever test with gas freezing and fractionation method for forty days after fractionation. All the results of the experiments showed Radiochemical Purity Efficiency is over 90%. Fever test and examination of Bacteriological cultivation showed all negative. Therefore, there is no problem in the clinic with this way. If we use 99m7c-ECD and 99m7c-MIBI, we can cut the materical cost about 7.5 million won. The more patients increase, the more amounts of reduction increase.

양생방법에 따른 타일 선붙임 공법의 접착특성에 관한 실험적 연구

김우상,공민호,안무영,박병근,김성식,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The objectives of the present study is to solve problems in PC tile before-fixing method using ordinary concrete by adopting the liquefaction method in manufacturing PC to which the tile before-fixing method is applied, and to provide basic information for the practical use of the PC tile before-fixing method, which uses high workable concrete, through manufacturing a complex body based on the optimal mix proportion.

FMS의 기계이용율 극대화를 위한 Part 및 Routing Mix 알고리즘

안동규,이상동 건국대학교 1995 대학원 학술논문집 Vol.40 No.-

Recently, a conorn of the optimal parformance evaluation of newly installed FMS machine has been raised in many companys. A variety of techniques for system performance evaluation has been introduced. A solution algorithm proposed in this paper is to maximize machine utilization using an iterative procedure of an LIP model and a queueing simulation, and consequently to determine part type and quantity which produce in the FMS.

Cu(Mg) 박막의 Time Dependent Dielectric Breakdown 특성 평가

안정욱,황상수,박영배,주영창 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.2

Electrical properties and time dependent dielectric breakdown (TDDB) characteristics of Cu (0.7 at.% Mg) alloy films are investigated to improve the reliability of Cu interconnects used in microelectronic devices. After Cu(Mg) films are annealed in vacuum at 400℃ for 30 min, resistivity decreases from 3.4 to 2.0 μΩcm and, thin and continuous MgO layers form both on Cu(Mg) film surface and on Cu(Mg)/SiO₂ interface. Metal-Oxide-Silicon (MOS) capacitors composed of Cu(Mg) film deposited on thermal oxide grown on Si wafer are subjected to bias temperature stressing at 180 through 220℃ under electric fields of 1.5 through 2.6 MV/cm. Median time to failure (MTTF) and activation energy of Cu(Mg)/SiO₂ are much larger than those of pure Cu/SiO₂. Cu drifts into dielectric are inhibited by the continuous Mg oxide formed at Cu(Mg)/SiO₂ interface which improve interfacial adhesion and finally lead to better interconnect reliabilities. (Received October 29, 2004)

한국고용정책의 미시적기초

안성은 大邱大學校 社會科學硏究所 1999 社會科學硏究 Vol.6 No.4

본 연구는 분권화된 노동시장(decentralized labor market)을 중심으로 구인활동과 구직활동이 활발하게 이루어 지고 있으며, 고용의 창출(job creation)과 고용의 소멸(job destruction)이 빈번한 노동시장을 연구대상으로 한다. 본 연구의 목적은 이러한 분권화된 노동시장의 특성을 파악하고 Nash bargaining game의 균형개념을 활용하여 균형 실업률을 계산하고 균형실업률의 결정요인을 파악하고자 한다. 경제전체의 실업률을 노동시장 참여자들의 개별적 의사결정의 결과로써 도출함으로써, 실업문제 해결의 미시적 기초(microfoundations)를 마련하고 다양한 실업대책의 정책적 의미를 해석해 보고자 한다. 장기적인 관점에서 볼 때, 실업률 그 자체보다 균형실업률에 영향을 끼치는 요인을 중심으로 실업대책 및 고용정책을 마련해야 한다는 결론을 도출하였다. 한편 실업과 관련한 통계자료의 조사도 단순한 실업률추정 위주에서 벗어나 노동시장의 여건을 파악하는데도 관심을 가질 필요성을 확인하였다. 즉, 실직기간, 재취업률, 구인자수, 구직자수등에 관한 구체적인 정보들이 실업률자체이상의 의미를 가질 수 있다는 점을 발견하였다. 최소한 필요한 실업자보호와 사회안전망 구축을 전제로 한다면, 장기적인 관점에서의 한국의 고용정책은, 전문적이고 체계적인 실직자 재취업 교육과 신산업분야의 고용창출을 위한 정부의 재정, 금융측면에서의 지원을 동반한 산업구조조정정책이 핵심이 되어야 한다는 것이 본 연구의 결론이다.

PEIS의 단계를 활용한 초등체육 전담교사의 교수행동에 관한 사례 연구

이상철,황영성,이수판,안성준 釜山大學校 附設 體育科學硏究所 2007 體育科學硏究所 論文集 Vol.23 No.2

본 연구는 PEIS의 단계를 활용한 초등체육 전담교사의 교수행동을 분석함으로써 초등체육 수업을 개선하는 데 목적이 있다. 연구의 목적을 달성하기 위해 문화기술적 사례연구를 수행하였다. 참여관찰과 심층 면담을 통해서 자료를 수집하였고 Spradley의 영역분석과 귀납적 범주분석을 이용하여 자료를 분석하였다. 연구결과 다음과 같은 결론을 얻었다. 첫째, 수업장학이 초등체육 전담교사의 비교육적 경향성을 감소시켰다. 둘째, 교재의 재구성과 교수행동의 관찰경험이 가르침의 딜레마를 극복시켰다. 셋째, 과제행동의 명확한 제시로 수업력을 향상시켰다. 넷째, 체육수업에 미칠 영향 요소의 제거로 수업 실행율을 높였다.

변형소둔한 극저탄소강의 결정립 성장 및 자성 해석

안성권,최장현,정원섭 대한금속재료학회 2002 대한금속·재료학회지 Vol.41 No.2

The effects of the grain size on the magnetic properties in IF steel after strain annealing were investigated. A 92.5% cold rolled and annealed IF steel sheet was temper rolled by 0.4% reduction in thickness and subsequently strain annealed at the temperature ranging between 670℃ and 950℃ for various time periods. The grains after strain annealing became more coarse than those after primary annealing. The grains were coarsened due to the strain induced grain boundary migration(SIGM). It was found that the permeability increased and coercivity decreased with the increase of grain size. The optimum magnetic properties was achieved after strain annealing at 850℃ for 30 min. Under this condition, the coercivity was measured to be 0.6Oe and the maximum permeability was 13000, also sound that the optimum grain size was 83 μm.

실물과 사진제시에 의한 화색과 식물형태의 비교 : focusing on the students of mental ratardation 정신지체학생을 대상으로

안기완,백지성,김은일,조희두,서성철,오찬교 韓國植物ㆍ人間ㆍ環境學會 1999 인간식물환경학회지 Vol.2 No.4

This study was carried out to verify the differences in preference of flower colors by displaying flowered plants and their photos to mentally retarded students. As a result, normal students showed consistent preference against both the objects. But mentally retarded students had a different preference for flowered plants and their photos.

EBSD를 이용한 변형소둔한 극저탄소강의 결정립 성장 해석

安聖權,洪承賢,崔章鉉,鄭元燮 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.8

A study has been made of the grain coarsening in IF steel after strain annealing. A 92.5% cold rolled and annealed IF steel sheet was temper rolled by 0.4% reduction in thickness and subsequently annealed at 750℃, 850℃ and 950℃ for various time periods. The grains occasionally started to grow abnormally near the surface and grew into the center during strain annealing. The pole figure and EBSD measurements showed that the abnormally grown grains did not have any orientation relation with the primary recrystallization texture before temper rolling. Grains which underwent less strains due to their orientations during temper rolling are believed to grow at the expense of surrounding grains from the calculated Taylor factors. Thus, the major coarsening mechanism was regarded to be the strain induced grain boundary migration rather than grain boundary characteristics.

Collimator 반사경 방향에 따른 선량 및 선질 변화

안성민,김성철 京畿專門大學 2000 京畿專門大學 論文集 Vol.- No.28

Collimator are very effective X-ray beam limiting in addition to reduce scattering ray, but mirror that function as divides X-ray field and beam field are bad effect X-ray image quality because of X-ray dose and dualities change. We take census mirror's direction in use clinics and experiment X-ray dose and quality depend on collimator's mirror direction. The result are summarized as follows : 1. Mirror's direction in use clinics come out in the direction of parallel Cathode - Anode are 86.5% and the direction of Cathode more superiority then Anode are 5.8%. 2. X-ray film density are more suitable the direction of Cathode more lower then Anode then Cx-Ay. 3. X-ray quality's distribution by change of kVp are proper direction of Cy-Ax. 4. As result, change of collimator's mirror direction are minimized heel effect without addition filter.