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First Near-infrared Imaging Polarimetry of Young Stellar Objects in the Circinus Molecular Cloud
Kwon, Jungmi,Nakagawa, Takao,Tamura, Motohide,Hough, James H.,Choi, Minho,Kandori, Ryo,Nagata, Tetsuya,Kang, Miju Published by the University of Chicago Press for t 2018 The Astrophysical journal Supplement series Vol.234 No.2
<P>We present the results of near-infrared (NIR) linear imaging polarimetry in the J, H, and K-s bands of the low-mass star cluster-forming region in the Circinus Molecular Cloud Complex. Using aperture polarimetry of point-like sources, positive detection of 314, 421, and 164 sources in the J, H, and Ks bands, respectively, was determined from among 749 sources whose photometric magnitudes were measured. For the source classification of the 133 point-like sources whose polarization could be measured in all 3 bands, a color-color diagram was used. While most of the NIR polarizations of point-like sources are well-aligned and can be explained by dichroic polarization produced by aligned interstellar dust grains in the cloud, 123 highly polarized sources have also been identified with some criteria. The projected direction on the sky of the magnetic field in the Cir-MMS region is indicated by the mean polarization position angles (70 degrees) of the point-like sources in the observed region, corresponding to approximately 1.6 x 1.6 pc(2). In addition, the magnetic field direction is compared with the outflow orientations associated with Infrared Astronomy Satellite sources, in which two sources were found to be aligned with each other and one source was not. We also show prominent polarization nebulosities over the Cir-MMS region for the first time. Our polarization data have revealed one clear infrared reflection nebula (IRN) and several candidate IRNe in the Cir-MMS field. In addition, the illuminating sources of the IRNe are identified with near-and mid-infrared sources.</P>
A First Look at BISTRO Observations of the <i>ρ</i> Oph-A core
Kwon, Jungmi,Doi, Yasuo,Tamura, Motohide,Matsumura, Masafumi,Pattle, Kate,Berry, David,Sadavoy, Sarah,Matthews, Brenda C.,Ward-Thompson, Derek,Hasegawa, Tetsuo,Furuya, Ray S.,Pon, Andy,Francesco, Jame American Astronomical Society 2018 The Astrophysical Journal Vol.859 No.1
Near-infrared Polarimetry of the Outflow Source AFGL 6366S: Detection of Circular Polarization
Kwon, Jungmi,Nakagawa, Takao,Tamura, Motohide,Hough, James H.,Kandori, Ryo,Choi, Minho,Kang, Miju,Cho, Jungyeon,Nakajima, Yasushi,Nagata, Tetsuya American Institute of Physics 2018 The Astronomical journal Vol.156 No.1
이창수(Lee, ChangSoo),권혁성(Kwon, HyukSung),채정미(Chae, JungMi) 한국보건간호학회 2017 韓國保健看護學會誌 Vol.31 No.1
Purpose: This study was conducted to suggest a method for financial projection of health insurance expenditures that reflects future changes in demographic structure. Methods: Using data associated with the number of patients and health insurance cost per patient, generalized linear models (GLM) were fitted with demographic explanatory variables. Models were constructed separately for individual medical departments, types of medical service, and types of public health insurance. Goodness-of-fit of most of the applied GLM models was quite satisfactory. By combining estimates of frequency and severity from the constructed models and results of the population projection, total annual health insurance expenditures were projected through year 2060. Results: Expenditures for medical departments associated with diseases that are more frequent in elderly peoples are expected to increase steeply, leading to considerable increases in overall health insurance expenditures. The suggested method can contribute to improvement of the accuracy of financial projection. Conclusion: The overall demands for medical service, medical personnel, and relevant facilities in the future are expected to increase as the proportion of elderly people increases. Application of a more reasonable estimation method reflecting changes in demographic structure will help develop health policies relevant to above mentioned resources.