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ADHD 아동의 주증상 완화와 학교생활적응을 위한 부모교육과 교사교육 프로그램의 효과 비교
이정은 ( Jungeun Lee ),김춘경 ( Chunkyung Kim ) 대구대학교 한국특수교육문제연구소 2010 특수교육저널 : 이론과 실천 Vol.11 No.1
The purpose of this study was to compare with effectiveness of Parents education program and Teachers education program for children with ADHD. Objects are 8 parents and 9 teachers in the Daegu and Gumi elementary school. Parents education program was consisted of the 4 sessions, and Teachers education program was consisted of 5 session, based on precede study and questionare to this study. The instruments used in the study were knowledge of attention deficit disorder scale, parent efficacy scale, teacher efficacy scale, Korean-ADHD Rating scale, ADHD school life adaption scale. The date were analyzed using Wilcoxon signed- rand test of nonparametric statistics. The results were as follows: Parents education program have significant consequences in improving parent’s ADHD knowledge and parent efficacy. Teachers education program have significant consequences in improving teacher’s ADHD knowledge and teacher efficacy. And both program have significant consequences in improving children with ADHD’s ADHD symptoms. Teachers education program have significant consequences in improving children with ADHD’s school life adaption.
Grid faults characteristics simulation of inverter-fed induction generator
홍지태(Hong, Jitae),권순만(Kwon, Soonman),김춘경(Kim, Chunkyung),이종무(Lee, Jongmoo),천종민(Cheon, Jongmin),김홍주(Kim, Hong-Ju),김희제(Kim, Heeje) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.11
The detail simulation modeling of fully-fed induction generator is investigated through PC based MATLAB/Simulink environment. Generator's stator currents are controlled by indirect vector control method. In this method, generator side converter controls the maximum excitation (air gap flux) by stator d-axis current and controls generator torque by stator q-axis current. Induction generator speed is controlled by tip speed ratio (TSR) upon the wind speed variations in order to generate the maximum output power. The generator torque model is specified as a 3-blade wind turbine with rating, then, the model is simulated under normal operating condition and three different fault conditions. The matlab model designed for fully-fed induction generator based wind farm provides good performance under normal and grid fault conditions. It provides good results for different pwm techniques and fault conditions except the single-phase line to ground fault, which should be verified with real time data from wind farms.