느린電子 檢出法에 의한 Ar, He 및 N_2 의 勵起斷面積測定

黃正男,강승언 동국대학교 1980 論文集 Vol.19 No.-

The excited state cross section of He, Ar, and N_2 were determined using trapped electron method and growth rate method, which was used in charge exchange phenomena study The electron gun, which was designed and constructed in this study, had 0.7 eV half width in 20eV energy. The excited state cross sections were (6.97±0.9)×10^-18㎠, (1.16±0.19)×10^-17㎠ and (4.16±0.81)×10^17㎠ for 2^3S of He, 3 ^3P of Ar, and A^3 ∑^u of N_2, respectively. An present results were in good agreement with other result.

교사개입유형이 협동적 조형 활동에서 유아의 또래 유능성과 정서조절능력에 미치는 영향

황정남(Jung nam Hwang),송수희(Su hee Song) 한국포괄영유아아동교육지원학회 2014 포괄영유아,아동교육지원연구 Vol.2 No.1

본 연구는 교사 개입 유형이 협동적 조형 활동에서 유아의 또래 유능성과 정서조절능력에 미치는 영향에 대해 알아보고자 하였다. 본 연구의 연구대상은 원주시에 위치한 B유치원의 만 4세 유아 32명으로 실험집단 16명, 비교집단 16명으로 나누어 실시하였다. 실험집단은 협동적 조형 활동에서 상호작용적 교사 개입을 경험하였고, 비교집단은 협동적 조형 활동에서 지도적 교사 개입을 경험하였다. 연구절차는 예비검사, 사전검사, 8주 동안의 실험처치, 사후검사 순으로 이루어졌으며 실험처치는 16회에 걸쳐 실시하였다. 본 연구에서 사용한 유아의 또래 유능성에 대한 검사 도구는 박주희와 이은혜(2001)가 취학 전 유아용으로 제작하여 사용한 또래 유능성 척도를 참고하여 연구자가 수정·보완한 유아용검사 도구를 사용하였고 정서조절능력 검사 도구는 Salovey와 Mayer(1990)가 제시한 정서지능의 모형을 근거로 이병래(1997)가 제작한 유아정서지능 척도 4개 중에서 연구자가 자기조절과 타인조절 2개 하위척도를 수정·보완하여 사용하였다. 실험전후에는 사전 · 사후 검사를 실시하였고 그 측정 결과는 SPSS ver.20 프로그램을 사용하여 평균, 표준편차, t-test로 분석하였다. 연구결과는 협동적 조형 활동에서 상호작용적 교사 개입을 경험한 실험집단 유아의 또래 유능성과 정서조절능력이 지도적 교사 개입을 경험한 비교집단에 비해 유의미하게 향상된 것으로 나타났다. The study was examined the type of the teacher who intervenes in cooperative art activity effects on young children s peer competency and emotional regulation skills. An object of study was 4 years old children who was divided into two groups that one is an experimental group and another was a comparative group of 16 members from 32 students at B kindergarten in Wonju. The story surveyed the procedure of an advance test, preliminary test, 8 weeks test term, and an ex post test. The test period was at 16 times from Dec.19, 2011 to Feb.17, 2012. The preliminary and post experiment was tested before and after test. The survey result was analyzed an average, standard deviation, and t-test by spss ver.20 program. An abstract is as follows. First, young children s peer competency of an experimental group which the teacher intervened reciprocally was improved more significancy than a comparative group which the teacher intervened instructively in cooperative art activity. Second, emotional regulation skills of an experimental group which the teacher intervened reciprocally was improved more significancy than a comparative group which the teacher intervened instructively in cooperative art activity. The survey was shown as the teacher interactive intervening effected on young children peer competency and emotional regulation skills in cooperative art activity. Therefore, the teacher reciprocity intervening can apply to improve child s capability and an emotional regulation skills in cooperative art activity.

의료기관을 대상으로 한 보건통계조사의 적정표본설계 방법론에 관한 연구

황정남 한국보건통계학회 1987 보건정보통계학회지 Vol.12 No.1

This study contains a detailed description of the sample survey design, estimating techniques by survey method and quality control devices related to medical facilities survey for health statistics. Thus it is a research of the technical structure of undertaking. It is also a result of the result of the research of how the structure of the study were put into place; the inicial purpose and objective, the available target population, the theoritical background of the sampling, the constraints and characteristic of the medical facilities survey, the determination of unit cost for survey, the balancing of contrasting requirements, efforts to optimize the sampling plan including use of new pattern of controlled selection, a scheme for gradual introduction of an increasing number of medical facilities with data validation and basic formal model for the sampling. In the practical sample design abour medical facilities, as with most large-scale sample survey, the designs and sample selection process may be complicated by in complete frame, non-response and measurement problem. However, it may apear unlikely that practically important non sampling bias will result in from the estimation procedure refered in this study This may require futher research on the effect of the hospital sample survey according to various purposes.

소비지 저장시설 확대를 위한 지원방안연구 (중간보고서)

황정남,Hwang, Jeong-Nam 대한석유협회 1993 석유와 에너지 Vol.1993 No.9

RBS의 원리와 응용[Ⅱ]

황정남(C. N. Whang),송종한(J. H. Song) 한국표면공학회 1990 한국표면공학회지 Vol.23 No.2

對稱 및 非對稱 電荷變換에 關한 硏究

황정남,진원배 동국대학교 재료과학연구소 1981 材料科學硏究所 論文集 Vol.1 No.-

本 硏究에서는 對稱 및 非對稱 電荷變換에 대한 Rapp와 Francis의 理論을 유효 이온화 에너지와 충격인자를 사용하여 개량하였으며, 理論式을 Perel 및 C.N. Whang의 實驗結果와 비교해 본 결과 잘 일치함을 알 수 있었다. 대칭 전하 변환과정에서 입자이온의 에너지가 증가함에 따라 단면적이 감소하며, 비대칭 변환과정에서 입사이온의 속도가 증가함에 따라 단면적이 감소한다. A modified Rapp and Francis theory for the symmetric and antisymmetric charge transfer is developed, using an effective ionization potential and modified impact parameter. The theoretical values are in good agreement with experimental results. The σ_10 for Li^++Li decrease with increasing Li^+ ion energy, and the non resonance σ_10 for Li^++Cd shows the expected abiabatic increase with increasing velocity.

P와 N型 Si半導體의 放射線障害硏究

黃正男,朴冠鎬,南信佑 동국대학교 대학원 1980 大學院硏究論集-東國大學校 大學院 Vol.10 No.-

The effects of neutron and electron irradiation on defects energy levels and infrared absorption in Si were studied. The defects energy levels were determined using admittance spectroscopy. Two electron trap energy levels(E_c―0.15eV and E_c―0.37eV) and two hole trap energy levels(E_v+0.18eV and E_v+0.40eV) were observed in fast neutron irradiated n and p type silicon, and two electron trap energy levels(E_c―0.19eV and E_c―0.41eV) were observed in electron irradiated silicon. 3.5㎛ infrared absorption band were observed in neutron irradiated n type Si, and 3.9㎛ and 6㎛ absorption band in p type Si.

이온 공간 전하에 의한 Mylar 박막의 열자격 전류 극대치의 온도 위치 변화

황정남,김현정 연세대학교 교육대학원 1984 연세교육과학 Vol.25 No.-

Thermally stimulated current curves from ion injected mylar film using liquid contact charging method show two peaks at about 350 K (peak A) and 380 K (peak B). Peak A is found to be due to ionic spice charge polarization. Activation energy and escape frequency for peak B is found to be (2.54±0.21) eV and (4.17±0.16)×1032 sec-1, respectively. And TSC intensities are increased with increasing the concentration of ions, while TSC peak temperature are decreased. These results are in good agreement with theoretical values.

다항 회귀 분석을 이용한 3차원 비석 데이터 내 글자 새김 추출법

허의주(Eui-Ju Jeo),최강선(Kang-Sun Choi) 대한전자공학회 2019 전자공학회논문지 Vol.56 No.3

본 논문에서는 다항 회귀 분석을 이용한 3차원 데이터에서의 비석 내 글자 새김 추출법을 제안한다. 비석의 거친 표면 특성으로 인해, 기존의 방법들이 글자 새김 뿐 아니라 많은 잡음이 함께 오검출되는 문제가 있다. 제안하는 방법에서는 이와 같이 검출된 영역을 새김 후보 영역으로 판단하고, 각 영역에 대해 획에 의한 새김인지를 자세히 판별함으로써 잡음 영역을 제거해 나가게 된다. 금석문은 보통 음각으로 새겨져 운하(canal)와 같은 형태를 가지는데, 이러한 운하의 단면 모양은 대칭적인 2차 곡선의 생김새와 유사하다. 따라서 제안하는 방법에서는 각 새김 후보 영역 내 여러 점 위치에서 해당 점을 포함한 단면 모양을 얻고, 이를 다항 회귀 분석을 통해 2차 곡선으로 근사화한 후, 단면과의 RMSE 오차를 계산한다. 이후 새김 후보 영역 내 얻어진 평균 오차가 큰 경우 잡음으로 판단하여, 제거함으로써 정확도가 높은 새김만을 추출하게 된다. 실험을 통해 제안하는 방법이 고르지 않은 거친 표면에서도 금석문을 명확하게 추출함을 보였고, F1 score 성능 비교를 통해 기존에 제안된 방법들보다 평균 22% 우수한 성능을 가지는 것을 확인하였다. In this paper, we propose a method to extract reliefs carved on stone monuments by analyzing 3-D scan data using polynomial regression. Due to the rough surface properties of the monument, conventional methods extract not only reliefs of characters, but also even a lot of noisy dents. The reliefs are usually engraved and shaped like a canal. The cross-sectional shape of this canal can be approximated with a symmetrical quadratic curve. In the proposed method, the regions including reliefs and noises are initially obtained using the conventional methods. The regions are regarded as relief candidate regions. For each candidate region, several cross sections of the region are reconstructed. Then, we evaluate how well the cross section is approximated by a quadratic curve in terms of root mean square error (RMSE). If the average RMSE obtained in the candidate region is large, it is classified as noise and removed. The remaining regions with low average RMSE are extracted as relief. Experimental results show that the proposed method clearly extracts the relief from the uneven rough surface, and the performance of the proposed method is 22% higher than that of the conventional methods in terms of F1 scores.

原子衡突過程의 單一電子 捕獲 斷面積에 관한 硏究

黃正男,申榮男 동국대학교 1979 論文集 Vol.18 No.-

The electron eapture cross sections σ_10 and σ_10^* of Li^+ in ground metastable state He, Ar, N_2, N_2, Li, Na, and Cd have been measured by the growth rate method in the energy range from 10 to 60 keV. The cross sections for ground states are in good agreement with other experimental results and theoretical ones from the Rapp and Francis theory. The metastable states of the target atoms were produced by the electron impact method and the excitation cross sections were measured by the trapped electron method. The σ_10^* for the metastable state are larger than the for the ground state by a factor ranging from 10^2 in the ower energy region to 10 in the higher energy region.