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( Heeseon Jang ),( Hyunggon Kang ) 한국보건정보통계학회 2017 보건정보통계학회지 Vol.42 No.2
Objectives: This study was conducted to identify the relationship between depression and eating disorders among college students of northern Gyeonggi-do in Korea. Methods: This was a self-report study, targeting a total number of 481 college students. We used the eating attitudes test-26 (EAT-26) to identify participants with eating disorders, while the degree of depression was evaluated by a self-diagnostic test composed of 10 questions. Results: Among the participants, 18.9% were found to have an eating disorder (91 out of 481 participants). The depression score for students with eating disorders was markedly higher (4.73points) than that for students with normal eating habits (2.57 points). We noted a statistically significant association between eating disorder and depression. Specifically, when depression score increased by 1 point, the risk of eating disorder was 1.31 times higher. Additional factors that increased the risk of having eating disorders besides depression were eating late, weight loss, degree of stress, and satisfaction with one`s appearance. Conclusions: In this study, we found that depression plays an important role in the development of eating disorders. Therefore, it is need to develop programs to promote right eating habits and prevent depression for college students.
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>
장희선(Heeseon Jang),원민영(Minyoung Won),김태경(Taekyeong Kim),조완섭(Wanseop Cho) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.1
단백질 상호작용(Protein-Protein Interaction : PPI)은 생명체 내에서 생명현상을 유지하기 위한 단백질 간의 유기적인 반응이다. 생물학 실험 도구의 발달로 현재 대량의 PPI 데이터가 발생하고 있으며 이것을 활용하여 생명체를 시스템 관점에서 이해하기 위한 시도가 진행되고 있다. 하지만 현재 PPI 데이터는 중복의 문제, 생물학자들 간의 용어 사용의 불일치성 문제로 인해 데이터의 질이 저하되어 분석결과에 부정적인 영향을 끼치고 있다. 본 논문에서는 현재인간 PPI 데이터의 문제점을 분석하고 이것을 해결하기 위한 온톨로지 기반의 데이터 정제 방법론을 제시한다. 본 연구를 통해 HPRD내에 존재하고 있던 약 52%의 결함이 있는 데이터를 발견하고 인간 단백질 상호작용 데이터의 품질을 향상시켰다.