노인의 문제중심대처와 주관적 안녕감 : 노화인식의 조절효과

남상희,김지연 한국생활과학회 2022 한국생활과학회지 Vol.31 No.5

This study aimed to examine the effect of problem-focused coping on subjective well-being and the moderating effects of awareness of positive (gains) or negative (losses) age-related changes among elderly people. Specifically, this study predicted that problem-focused coping would be positively related to subjective well-being (hypothesis 1) and that the awareness of positive (hypothesis 2) or negative (hypothesis 3) age-related changes negatively moderated the influence of problem-focused coping and subjective well-being. For this purpose, we conducted an online survey with 350 elderly participants. The results were as follows: First, problem-focused coping positively predicted subjective well-being; Second, awareness of positive age-related change mitigated the relationship between problem-focused coping and subjective well-being; However, the moderating effect of awareness of negative age-related change was not significant. Finally, the implications and limitations of this study were discussed. 본 연구의 목적은 노인을 대상으로 문제중심대처와 주관적 안녕감의 관계를 확인하고, 문제중심대처와 주관적 안녕감 사이에서 노화이득인식과 노화손실인식의 조절효과를 확인하는 것이다. 본 연구에서는 문제중심대처와 주관적 안녕감이 유의한 정적인 관계가 있을 것이며(가설 1), 두 변인 간의 관계가 노화이득인식과 노화손실인식에 의해 완화될 것이라고 예상하였다(가설 2, 가설 3). 이를 위해 350명의 노인을 대상으로 설문조사를 실시하였으며, 그 결과는 다음과 같다. 첫째, 문제중심대처는 주관적 안녕감을 정적으로 예측하였다. 둘째, 문제중심대처와 주관적 안녕감의 관계는 노화이득인식에 의해 약화되었다. 셋째, 문제중심대처와 주관적 안녕감 사이에서 노화손실인식은 유의한 조절효과를 갖지 못하였다. 마지막으로 본 연구의 의의와 한계를 논하였다.

Glucose주입에 의한 Rebbit의 모세혈관혈류운동의 비선형적 분석에 관한 연구

남상희,은충기 인제대학교 1998 仁濟論叢 Vol.14 No.2

Many physiological systems have complex phenomena. Thus, these complex phenomena are analysed by nonlinearly recently. Especially, the flow of capillary blood vessel has a nonlinear dynamic system. Thus, this study, we analyzed nonlinear characteristics of the flow of capillary blood vessel in physiological systems using chaotic tools(phase space reconstruction, correlation dimension, largest lyapunov exponent). And we injected glucose to rabbits in order to compare between stable state and unstable state. Experimental data have been acquired from examining 10 rabbits. The results of chaotic analysis showed chaotic behavior of rabbit's flow of cappilary blood vessel and the decreasement of largest lyapunov exponent and correlation dimension accordng to injection of glocose. And we also knew the chaotic behavior.

電算化 斷層撮影像에 關한 畵像 再構成法의 數理學的 考察

南尙熙,宋在寬,趙準錫 대구보건대학 1981 대구보건대학 論文集 Vol.5 No.-

The basic principle behind computed tomography is that the internal structure of an object can be reconstructed from multiple projections of the object. The mathematical methods is to produce an accruate cross-sectional display of the linear attenuation coeffidients of each element in the image matrix. This mathematical methods of image reconstruction are described : 1. Back-projection (Sumation method) 2. Iterative methods(Algebraic reconstruction tehnique) 3. Analytical methods (Fourier transformation) We will only attempt a pictorial explanation of the two popular analytic methods, which are two - dimensional fourier analysis and filtered back projection. The basic of fourier analysis is that any function of time or space can be represented by the sum of various projection data. This type of mathematical manipulation is easily and quickly processed in a computer. The reconstruction is a little more complex for a two-dimensional image such as a CT, but the basic principle is the same.

Electrical Analysis of a Planar-type Digital X-ray Detector with Inert Gas

남상희,박성광,Min-seok Yun,Suk-hee Jung 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.4

Large-area digital X-ray image detectors are currently being investigated for medical diagnostic and non-destructive tests. In this paper, a new planar-type detector for diagnostic X-ray (using an inert gas) imaging is proposed, and its electrical characteristics are presented. Almost gas detectors are designed in the shape of a chamber, so we made a planar-type panel sample based on a plasma display panel (PDP) technique. The transparent electrodes and dielectric layer were formed on the front glass. Additionally, the bottom electrodes and dielectric layer were formed on the rear glass. Then, we injected an inert gas (xenon and helium) with various component ratios into the sample using by gas-filling equipment. We measured the dark current density and the X-ray sensitivity as functions of the electric field to investigate the electrical properties. From the results, a stabilized dark current density and a significant X-ray sensitivity were obtained. Also, the signal linearity was calculated, and a good linearity as a function of exposure dose could be realized over a wide diagnostic energy range. All linearity coefficient values were higher than 0.9. These results mean that the passive matrix-addressed flat panel gas detector can be used as a digital x-ray detector.

차세대 방사선 변환 센서 기술 동향

남상희 한국전기전자재료학회 2002 전기전자재료 Vol.15 No.5

방사선 영향에 대한 MOS소자에서의 전기적 특성

남상희 인제대학교 1993 仁濟論叢 Vol.9 No.1

전리방사선에 의한 MOS소자의 산화층내의 charge density의 변화를 TSC, TVS방법으로 조사하였다. 전리방사선의 조사되지 않은 시편에서 두개의 peak를 얻었으며, 두 peak의 활성화에너지는 저온의 peak가 0.7eV, 고온의 peak는 1.2eV였다. 이값은 Hickmott등이 구한 H+, 고온의 peak는 Na+ 이온임을 증명하는 것이다. 그러므로 전리방사선의 조사에 의한 MOS소자의 charge density는 이동성 이온임을 밝혀졌다. MOS소자의 산화층내의 trap의 분포는 Al-SiO2 계면이 Si-SiO2 계면보다 더 큰 활성화 에너지를 가지고 있으며, trap분포는 Si-SiO2 계면이 더 밀집되어 있다. 전리방사선의 조사선량을(Rhm)의 증가에 따른 최대전류의 증가는 heating rate(β)나 voltage sweep rate(α)의 증가와 유사하였으며, 이 결과는 열적, 전기적 자극의 변화와 일치한다는 것을 의미한다. This study is to investigate tha the electrical character of charge density within MOS capacitors growing oxide layer on N-type silicon by dry oxidation is charged by ionization radiation. When MOS capacitors are exposed to 57C0(5.4mCi) γ-ray, it induced space charge built up on the oxidized silicon surface layer. The space charge are able to drift out of the oxide layer under the action of a field and a region of space charge is created at the MOS interface. I wased the following experimental method ; Thermally Stimulated Current(TSC), Triangular Voltage Sweep(TVS) In TSC experiment, I know that TSC current was two current peak, and the lower temperature peak become bigger in proportion to H+ ions, and the higher temperature increased to Na+ions. I also discovered that Activation Energy was 0.7eV(H+) and 1.2eV(Na+) respectively, and that in the trap depth was almost like and was deeper Al-SiO2 that Si-SiO2. In proportion to the increase of the field :activation Energy(E) and Maximum current generated temperature(Tm) decreased which was the decrease of potential well of trap which positive ions went with H+ ions was influenced by the field, but Na+ions temperature. In TVS experiment, I observed that the trap depth Al-SiO2 was deeper than Si-SiO2 surface and was broader than Si-SiO2 in the trap distribution. Mobility was alike to that gained by Hickmott, Stagg. Mother observance I made was that ions was easily released from the trap by the strong field in the low temperature. I also discovered that the experiment value would well explained the relation of the change of the heating rate(β) and voltage sweep rate(α) was almost alike elevated ionization radiation.

Mammogram 진단에 있어 이미지 강조기법과 Fractal Dimension을 이용한 미세석회 검출에 대한 평가

남상희,은충기 인제대학교 1998 仁濟論叢 Vol.14 No.2

Some researches related to the digital image processing and analysis of the mammograms have been conducted to solve some problems of interpreting the mammograms. In the mammography x-ray film-screen, the contrast between bengm and malignant cancer is not so distinct. This study was performed to help the clinicians interpreting the mammograms by providing fractal dimension of mass, mass and microcalcification, and microcalcification. Raw data of the 60 patients(30 for each group ; 'mass and microcalcifications' and ' microcalcifications' group) were obtained in the conditions of 0.1mm resolution, 12 bit gray scale images. The image enhancement was performed and the fractal dimensions were extracted to represent. The mass showed the smooth shape, however, microcalcification symptom has more rough figures. In conclusion, the calculation of the fractal dimension could improve the early detection of the breast cancer. The fractal dimension could be applied for the diagnosis of the breast cancer.

ICR마우스의 태아(胎兒)에 대한 방사선(放射線)과 초음파(超音波)의 공동효과에 관한 실험적 검토

남상희,구연화 인제대학교 1992 仁濟論叢 Vol.8 No.1

The Combined effect of radiation and Ultrasound has been studied in mouse embryos. Radiation and/or Ultrasound has been were adminstered to ICR mice on day 8 of gestation. Intrauterine death, gross malformation, and fetal body weight were selected as indicators of effects. Dose of whole-body r-irradiation were 0.5 to 2.5 Gy and those of ultrasound were 0.5W/cm2 to 3W/cm2. Intrautrine mortality increased with increasing radiation dose ; this trend was more remarkable in combination with ultrasound. Gross malformation such as exencephaly and anophthalmia/microphthalmia appeared frequently in the fetuses treated with both radiation and ultrasound. Decreased fetal weight was observed even in mice treated with 1.5Gy of radiation or 1W/cm2 of ultrasound. There was a linear relationship between dose and reductions of fetal weight. The fetal weight was sensitive, precise, and easy-to-handle indicator for the effects of growth retardation. Intrauterine mortality and frequencies of exencephaly and anophthalmia/microphthalmia were higher than the sum of those induced by radiation and by ultrasound. The results indicated that the combined action of radiation and ultrasound of intrauterine death and malformations was synergistic.

방사선 의료 영상

남상희 대한전자공학회 1994 전자공학회지 Vol.21 No.12

디지탈 X선 촬영 장치

남상희 대한전자공학회 1996 전자공학회지 Vol.23 No.3