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고광윤(Goh, Gwnag-Yoon),백주현(Back, Ju-Hyun) 한국영어학학회 2010 영어학연구 Vol.16 No.2
This study is a corpus-based analysis of the English vocabulary used in the English exams of the College Scholastic Ability Test (CSAT) and its two analogous tests (i.e., the Mock CSAT and the Achievement Test), and it aims to determine the vocabulary levels of the three types of English exams and evaluate their appropriateness as tests to measure prospective college students' English proficiency for higher education, an issue left mostly untouched in all previous studies. To achieve this goal, a corpus of college entrance English exams has been built from the English exams of the three related nationwide tests administered for six years from 2004 to 2009 and been analyzed and compared in several different ways. The results show that the three types of English exams are similar in virtually all aspects, including vocabulary size and vocabulary difficulty level, suggesting that their yearly difficulty levels have been maintained quite consistently. Considering the low lexical coverage of college-level academic vocabulary, however, it is doubtful whether Korean CSAT English exams can be legitimately used to give an accurate and objective evaluation of prospective college students' English proficiency, as part of 'college scholastic ability', required for studies at college.
근적외선 분광분석법을 이용한 당화혈색소의 측정 및 혈당측정과의 관계
백주현,김효진 동덕여자대학교 종합약학연구소 2003 동덕약학연구지 Vol.7 No.-
Measurement of hemoglobin A_(1c) (glycated hemoglobin) has been recommended for the long-term assessment of glycemic control in diabetic patients. Near infrared spectroscopy and partial least square (PLS) regression were applied to the quantitative analysis of physiological hemoglobin A_(1c) (Hb A_(1c)) level from diabetics. Standard errors of calibration (SEC) and standard errors of prediction (SEP) was 0.69, 0.85, respectively. Calibration R value for calibration and prediction was 0.8882, 0.8834, respectively. We suspected Hb A_(1c) as a critical influence factor on non-invasive blood glucose measurement, because it is formed by the irreversible combination of glucose with the N-terminal of a β-chain. The study was carried out in diabetics by PDA type NIR spectrometer with a fiber optic probe. PLSR and error grid analysis (EGA) were applied to determine only blood glucose level and HbA_(1c) compensated-blood glucose level. Calibration result of glucose level including HbA_(1c) was better than the other. It showed probability of non-invasive HbA_(1c) measurement and reliability of non-invasive blood glucose monitoring accuracy.