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학급차원의 또래도우미 활동 프로그램이 비장애학생의 장애학생과의 친구관계와 장애학생의 학교생활적응에 미치는 영향
허희선(Heo Heeseon),박승희(Park Seunghee) 이화여자대학교 특수교육연구소 2011 특수교육 Vol.10 No.1
통합된 장애학생에게 또래지원과 또래 간의 긍정적인 상호작용은 학교에 원만하게 적응하는데 도움을 주며 사회적 통합을 가능하게 한다. 이에 이 연구의 목적은 초등학교 통합학급 학생들을 대상으로 학급차원의 또래도우미 활동 프로그램을 고안하여 실시하고 비장애학생의 장애학생과의 친구관계와 장애학생의 학교생활적응도에 미친 영향을 알아보는 것이다. 연구참여자는 경기 A일반 초등학교의 2학년 장애학생 2명과 각 장애학생이 속한 2개 통합학급 학생 60명으로, 1학급씩 실험집단과 통제집단으로 나누었고 실험집단은 9주간 또래도우미 활동 프로그램에 참여하였다. 측정도구는 ‘친구관계에 관한 질문지’와 ‘학교생활적응도에 관한 질문지’를 사용하였다. 연구결과 실험집단이 통제집단에 비해 장애학생과의 친구관계에서 유의미한 향상을 보였고, 장애학생의 학교생활 적응도 역시 실험집단 장애학생이 통제집단 장애학생에 비해 큰 폭으로 향상되었다. 이 연구는 통합학교에서 자연적 지원의 주요 자원인 또래지원을 보다 계획적이고 체계적으로 활용하는데 한 지침이 될 수 있는 또래도우미 활동 프로그램의 구체적 내용과 절차를 제시하고 그 긍정적 효과를 입증하는 결과를 산출한 의의가 있다. 끝으로 이 연구의 제한점과 후속연구를 위한 제언을 제공하였다. The purpose of this study was to find out how a class-wide peer supporter program had an affect on the friendship between children with and without disabilities and the school adjustment of children with disabilities in an elementary inclusive school. The participants from two second grade inclusive classes were divided into one experimental group and one control group. Each group was composed of one child with disability and thirty children without disabilities. Experimental procedures taken were preparation, pre-test, implementation of the program for 9 weeks, and post-test. The changes in the friendship perceived by children without disabilities toward children with disabilities and the changes in the level of school adjustment of children with disabilities were examined by using a questionnaire on friendships and a questionnaire on the level of school adjustment. To verify the effects of a class-wide peer supporter program on the friendship perceived by children without disabilities, ANCOVA was employed using the pre-test score as a covariate variable. Significant differences were found between the experimental and control groups in the total scores and the scores of six areas of the friendship showing significantly higher scores in the experimental group. The total score and the scores of four areas and qualitative assessment of the school adjustment of a child with disabilities in the experimental group were higher and more positive than those of a child with disabilities in the control group. These results indicated that the class-wide peer supporter program implemented in this study was effective in enhancing the friendship between children with and without disabilities and in improving the level of the school adjustment of two children with disabilities. Some limitations of this study and suggestions for future research were provided.
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Jang, Heeseon,Kim, Nam Joon,Heo, Jiyoung Elsevier 2018 Computational & theoretical chemistry Vol.1125 No.-
<P><B>Abstract</B></P> <P>Time-dependent density functional (TDDFT) theory has become a popular method to calculate electronic excited states. The electronic circular dichroism (ECD) spectra of chiral molecules can be computed by TDDFT to resolve their absolute configurations. In this work, we evaluated the performance of TDDFT to calculate ECD of three chiral molecules whose vibronic CD spectra in a supersonic jet were recently reported. We tested seven different functionals (PBEPBE, PBE1PBE, B3LYP, mPW1PW91, M06-2X, CAM-B3LYP, and ωB97X-D) with different levels of the Pople basis set to predict the rotatory strengths of both vertical and adiabatic excitations of the chiral molecules. The 6-311++G(d,p) basis set is appropriate for the ECD calculation, and the augmentation of the diffuse function improves the quality of basis set in calculating the rotatory strength. The simulations of vibronic CD spectra under the adiabatic Hessian scheme in Cartesian coordinates have been feasible only with the M06-2X, CAM-B3LYP, and ωB97X-D functionals. The rotatory strength signs for the 0–0 transition of (1<I>R</I>, 2<I>S</I>)-ephedrine and (<I>S</I>)-2-amino-1-phenylethanol agree well with the experimental results. For the (1<I>S</I>, 2<I>S</I>)-pseudoephedrine conformers, the rotatory strength signs predicted using those three functionals are consistent with each other but do not coincide with the experimental results. The PBEPBE and B3LYP functionals are not robust for geometry optimizations in TDDFT because the calculations using these functionals do not provide reasonable equilibrium geometries for some conformers in the S<SUB>1</SUB> state. Comparison with the conformation-specific CD spectra provides the unambiguous assessment of the DFT functionals suitable for ECD calculations.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The accuracy of TDDFT in computing conformation-specific ECD is estimated. </LI> <LI> The simulations of vibronic CD spectra are feasible only with the M06-2X, CAM-B3LYP, and ωB97X-D functionals. </LI> <LI> The PBEPBE and B3LYP functionals are not robust for geometry optimizations in TDDFT. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Fluorescence-detected circular dichroism spectroscopy of jet-cooled ephedrine
Hong, Aram,Jeong, Changseop,Jang, Heeseon,Choi, Myoung Choul,Heo, Jiyoung,Kim, Nam Joon The Royal Society of Chemistry 2016 Physical chemistry chemical physics Vol.18 No.11
<P>The resonant two-photon ionization circular dichroism (R2PICD) spectrum represents the cumulative circular dichroism (CD) of one-photon excitation and the subsequent one-photon ionization, whereas the fluorescence-detected circular dichroism (FDCD) spectra exhibit only the CD of one-photon excitation, similar to conventional CD spectra. We obtained the FDCD spectra of jet-cooled ephedrine (EPD) near the origin band of the S-0-S-1 transition to measure the CD of one-photon absorption and thus the CD of the ionization process in R2PI in comparison with the R2PICD spectra. The CD effects of the ionization following excitation of the A (0-0) and C (930 cm(-1)) bands in the spectrum are small, whereas those of the B band (530 cm(-1)) are anomalously large, leading to opposite CD signs for the FDCD and R2PICD spectra. Based on the intermediate state-selective fragmentation patterns in the R2PI spectra, this large CD effect is attributed to the state-selective isomerization that occurs after excitation of the B band. By comparing the experimental and theoretical spectra, we determined that the B band corresponds to an asymmetric ring distortion mode that involves torsional motions of the side chain, which may facilitate the isomerization process. This study demonstrates that FDCD spectroscopy combined with R2PICD spectroscopy provides a powerful tool to measure the CD effects of the excitation and ionization processes separately in R2PI and thus probe the structural changes that occur during the ionization process following excitation to an intermediate state.</P>
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