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장지현 ( Ji Hyun Chang ),홍남수 ( Nam Soo Hong ),감신 ( Sin Kam ),김건엽 ( Keon Yeop Kim ),이원기 ( Won Kee Lee ),김기수 ( Ki Su Kim ),배상근 ( Sang Geun Bae ) 한국보건정보통계학회 2016 보건정보통계학회지 Vol.41 No.1
Objectives: To evaluate effects of an intervention using lay health advisors on promoting cancer screening and to develop effective strategies and health services. Methods: The number of subjects included in the final analysis was 188. Of those, 72 were applied to health services provided by public health centers (control group) and 116 composed the experimental group. They were selected from residents of Daegu and Gyeonsangbuk-do aged older than 40 years. We designed a questionnaire applying Trans-theoretical Model and Health Belief Model in order to determine the subjects’ intentions to participate in the national cancer screening program. Any thought changes occurred after the interventions were compared with the intial responses. For statistical analysis, paired t-test, ANCOVA and multiple logistic regression analyses were conducted. Results: After the intervention using lay health advisors, knowledge about cancer screening and its benefits were improved and self-efficacy increased with statistical significance. Moreover, barriers to cancer screening decreased. Compared to application of health services provided by public health centers, encouraging cancer screening by lay health advisors was 1.64 times more likely to generate forward stage movement in cancer screening, but there was no statistical significance. Conclusions: Even though, effects of the intervention using lay health advisors on promoting cancer screening were not clearly determined, it is a precedent study for emphasizing application of community resources and participation of residents in promoting cancer screening. Further studies are required to specify effects of the intervention.
장지호(Jiho Chang),조재일(Jaeil Cho) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
In recent, a endoscopy system using the stereo camera is increasing in the field of surgical robot. The endoscope system is a illumination unit for operating from the inside of the body. However, because of lighting module is not sufficient uniform, the stereo endoscopy system occurs some problems, such as radiometric distortion. In this paper, we apply the existing various algorithms to identify that problems and understand through the actual video of the stereo endoscopy system. Through comparison between the algorithm we check the appropriate algorithm and figure out what needs to solve any problems in the future work.
Structural and Optical Properties of ZnO Rods Hydrothermally Formed on Polyethersulfone Substrates
Chang Mi Shin,Jin-Tak Jang,Chang-Yong Kim,류혁현,이원재,장지호,손창식,최희락 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.60 No.12
Various unique ZnO morphologies, such as cigar-like and belt-like structures and microrod and nanorod structures, were formed on flexible polyethersulfone (PES) substrates by a low temperature hydrothermal route. The structural properties of ZnO highly depend on precursor concentration. The effect of a thin ZnO seed layer deposited on PES substrates by atomic layer deposition on the structural and optical properties of hydrothermally-grown ZnO on the ZnO seed layer/PES substrates was studied. Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and photoluminescence (PL) measurements were employed to analyze the characteristics of hydrothermally-grown ZnO. The diameter of the ZnO nanorods grown on the ZnO seed layer/PES substrates increases with increasing precursor concentration from 0.025 to 0.125 M, due to the Ostwald ripening process. Hydrothermally-grown ZnO on the ZnO seed layer/PES substrates at a low precursor concentration shows better structural properties than does ZnO formed without a seed layer. Well-formed ZnO nanorods on the ZnO seed layer/PES substrates deposited show two PL peaks in the ultraviolet and the visible region, whereas horizontally positioned ZnO formed on the PES substrate in the absence of a seed layer emits only one broad PL peak at the violet region.