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Blain, Andrew W. The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4
The first all-sky mid-/far-infrared survey by IRAS in the 1980s, has been followed by only two more, by AKARI, from 2006, and WISE in 2010. I discuss some features of the WISE survey, and highlight some key results from early extragalactic observations that have been made by the science team during the operation of the telescope, and the post-operation proprietary period during which the public release data products were being generated. The efficient survey strategy and very high-data rate from WISE produced a catalogue of 530 million objects that was released to the public in March 2012. The WISE survey strategy naturally provided the deepest coverage at the ecliptic poles, where matched comparison fields were obtained using Spitzer, and where AKARI also observed deep fields. I describe some of the follow-up work that has been carried out based on the WISE survey, and the prospects for enhancing the WISE data by combining the AKARI survey results are also discussed. While the all-sky AKARI survey is less deep than the WISE catalogue, and is still being worked on by the AKARI science team, it includes a larger number of bands, extends to longer wavelengths, and in particular has very complementary band passes to WISE in the mid-infrared waveband, which will provide enhanced spectral information for relatively bright targets.
Unmasking Young Learners’ Perceptions of Good Language Teacher Identity
안소연,Gordon Blaine West 한국영어교육학회 2016 ENGLISH TEACHING(영어교육) Vol.71 No.1
This study explores the notion of ‘good language teacher’ (GLT) identity in the context of English education in South Korea. While other studies have investigated parents’ and general public preferences for and associations of good language teacher identity with ‘native-speaking’ teachers of English, little research has examined the views of young learners as to what constitutes a GLT. In this study, a survey tool was used to collect student images and descriptions of imagined, good English teachers. A total of 577 young Korean students (K-6th grade) provided their own images and descriptions of good English teachers, both in English and Korean. The findings indicate that student perceptions of GLT identity strongly reflects their immediate learning experience. Contrary to previous studies showing preference for teachers according to ‘native speaker’ or other markers (e.g., race, gender), the study demonstrated no strong preference for native speaking teachers. Instead, factors such as personality were emphasized. This study provides implications for recruiting and hiring practices for English teachers.
Dynamic Modeling of Coupled Tendon-Driven System for Surgical Robot Instrument
김지언,이민철,Ryan Blaine Wicker,윤성민 한국정밀공학회 2014 International Journal of Precision Engineering and Vol.15 No.10
This paper is the study of a surgical instrument which directly performs MIS(Minimally Invasive surgery) on a patient, instead of asurgeon. The instrument used in robot assisted laparoscopy adopts a tendon driven mechanism so that it generates hand-like surgicalmotion through aperture of trocar. To create a high DOF of motion in restricted spaces, cable systems for end-effector have beenorganized by serial kinematic chains which can cause interference among joints sharing same axis. Also, to prevent the elongationof any cable, composited and pre-extended cables, which show nonlinear characteristics, are used in surgical instrument tendonsystem. As aforementioned difficulty and complexity, there are not many studies about measuring or estimating the operating forceof instruments without sensors, which is needed for safety but still impossible in commercial systems. This paper derives governinga dynamic model of a coupled cable pulley structure while considering the material tensile characteristics of the cables. The derivedmodel can estimate the operating force on end-effector as well as states of all inner pulleys without encoders. This paper proves theavailability of proposed methodology with comparison of numerical analysis and the experimental test of 2 DOF serial kinematicchained cable pulley link apparatus.
The environments of luminous radio-WISE selected infrared galaxies
Penney, J I,Blain, A W,Wylezalek, D,Hatch, N A,Lonsdale, C,Kimball, A,Assef, R J,Condon, J J,Eisenhardt, P R M,Jones, S F,Kim, M,Lacy, M,Muldrew, S I,Petty, S,Sajina, A,Silva, A,Stern, D,Diaz-Santos, Oxford University Press 2019 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.483 No.1
Various Master Sintering Curve Concepts and its Applications
Park Seong-Jin,Blaine Deborah C.,German Randall M. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
The master sintering curve (MSC) is derived from densification data over a range of heating rates and temperatures. To improve the accuracy, several modifications were proposed: multi-phase MSC for solid state sintering with phase changes, MSC for liquid phase sintering, and MSC with consideration of grain growth. The developed MSC models were applied to several material systems such as molybdenum, stainless steels, and tungsten heavy alloys (WHA), in order to evaluate the effect of compaction pressure, phase change, grain growth, and composition on densification, to classify regions having different sintering mechanism, and to help engineer design, optimize, and monitor sintering cycles.
Crystal structure of the EnvZ periplasmic domain with CHAPS
Hwang, Eunha,Cheong, Hae-Kap,Kim, Sang-Yoon,Kwon, Ohsuk,Blain, Katherine Y.,Choe, Senyon,Yeo, Kwon Joo,Jung, Yong Woo,Jeon, Young Ho,Cheong, Chaejoon North-Holland Pub 2017 FEBS letters Vol. No.
<P>Bacteria sense and respond to osmolarity through the EnvZ-OmpR two-component system. The structure of the periplasmic sensor domain of EnvZ (EnvZ-PD) is not available yet. Here, we present the crystal structure of EnvZ-PD in the presence of CHAPS detergent. The structure of EnvZ-PD shows similar folding topology to the PDC domains of PhoQ, DcuS, and CitA, but distinct orientations of helices and beta-hairpin structures. The CD and NMR spectra of EnvZ-PD in the presence of cholate, a major component of bile salts, are similar to those with CHAPS. Chemical cross-linking shows that the dimerization of EnvZ-PD is significantly inhibited by the CHAPS and cholate. Together with beta-galactosidase assay, these results suggest that bile salts may affect the EnvZ structure and function in Escherichia coli.</P>