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A Study on the Acquisition of Tough-Construction by Korean EFL Learners
손정호,민수정 한국현대영어영문학회 2019 현대영어영문학 Vol.63 No.1
The present study aims to inquire current linguistic approaches to the Tough Construction (TC) and examine how Korean EFL learners comprehend the TCs. Taking interdisciplinary approach to the TCs, the present study investigates how the Korean EFL learners acquire the TCs and whether their comprehension develops as a result of English proficiency development. Since Korean EFL learners at the age of 13 or 14 are likely to be first exposed to TCs according to the national curricula, 180 middle school students participated in this study. The findings indicate that Korean learners of English with low proficiency demonstrate two interpretations of the TC whereas learners with high proficiency performs in a target-like way only. The findings provide some useful pedagogical implications for teaching and learning English in general and specific structures in particular for English learners of different language proficiency levels.
손정호 가야대학교 2011 가야대학교 논문집 Vol.19 No.-
After the specimen of A-site defect perovskite La⅓TaO₃ single crystal was manufactured, the dielectric properties were studied between the temperature range of 10 and 800 K. The dielectric anomaly appeared at 50 K and 600 K, and, at the range of 550-800 K, the large thermal hysteresis of dielectric constant was shown. The ac-conductivity of bulk showed the activation energy of 0.35 eV at 570-670 K. Based on the results, it is assumed that the dielectric anomaly at 600 K was due to the rearrangement of La^(3+)-ion, respectively.
A-자리 결함 perovskite La<sub>1/3</sub>NbO<sub>3</sub> 단결정의 유전특성
손정호,Sohn, Jeong-Ho 한국결정성장학회 2010 韓國結晶成長學會誌 Vol.20 No.6
After the specimen of A-site defect perovskite $La_{1/3}NbO_3$ single crystal was manufactured, the dielectric properties were studied between the temperature range of 10 and 800 K. The dielectric anomaly appeared at 50 K and 650 K, and, at about 650 K, the thermal hysteresis of dielectric constant was shown. The ac-conductivity of bulk showed the lowest activation energy of 0.43 eV at 560~690 K. Based on the results, it is assumed that the dielectric anomaly at 50K and 650 K was due to the antiparallel shift of $Nb^{5+}$-ion and the rearrangement of $Nb^{3+}$-ion, respectively. A-자리 경함 perovskite $La_{1/3}NbO_3$ 단결정 시편을 제작하여 10~800 K 온도범위에서 유전특성을 조사하였다. 50 K와 650 K 부근에서 유전이상이 나타났으며, 고온영역(약 650 K)에서 유전상수의 thermal hysterisis가 크게 나타났다. 교류전도도 측정으로부터 560~690 K에서 입내 활성화 에너지는 0.43 eV로 가장 낮게 나타났다. 이들의 결과로부터 50 K 부근의 dielectric anomaly는 $Nb^{5+}$-이온의 antiparallel 변위에 기인한 것이며, 650 K 부근의 dielectric anomaly는 $La^{3+}$-이온의 재배열에 기인한 것으로 추측된다.