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다층구조와 전자장결합 급전구조를 갖는 사각형 마이크로스트립 패치안테나의 해석
정문희,남상욱 대한전자공학회 1994 전자공학회논문지-A Vol.31 No.2
In this papaer, the input impedance of the rectangular microstrip patch antennas with the multilayered structure is analysed by using the moment method technique in the spectral domain. The analysis is carried out for two different feeding structures : directfeeding structure and electromagnetic-feeding structure. In order to obtain the accurate input impedance, the current distribution on the microstrip feed line is modeled by the quasi-TEM travelling wave and the PWS(piecewise sinusoidal) mode. The input impedances of the designed microstrip antennas are measured and compared with the calculation. which shows a good agreement.
정문희 한양대학교 의과대학 1999 한양의대 학술지 Vol.19 No.1
Nurses carry out their services differently according to the scale of enterprises : In large enterprises they work full-time and in small and medium sized ones they work as visiting nurses, placed by health management agencies. Without respect to the size of enterprises, occupational health nurses play a considerable part of health managemant affairs. Until now health management affairs have aimed at decreasing occupational diseases. But working conditions are improved and occupational diseases decrease. So their goals will be changed, aiming at the health promotion and the prevention of general diseases which have been on the steady increase. As occupational health nursing activities are expected to be changed to accomplish such goals, the roles of nurses are expected to be expanded as well. The direction of nursing activities toward better health management, therefore, will be focused on preparing occupational health nurses so as to produce high-quality specialized services fit for the scale of enterprises, the ways of nursing activities, and the goals of health management.