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ByeongKil Yeon,Narei Hong 대한신경정신의학회 2007 PSYCHIATRY INVESTIGATION Vol.4 No.1
Objective-Although psychotic disorders usually manifest in young adulthood or middle age, some psychotic patients present psychotic symptoms for the first time in late life. The concept and diagnosis of late-onset psychosis have changed over the years. The authors review the clinical features, epidemiology and treatment of late-onset psychosis, with particular emphasis on lateonset schizophrenia. Methods-The authors conducted a MEDLINE literature review. Reviews, textbooks and some clinical studies about late-onset psychosis which were published in the literature were reviewed. Results-Although, in general, patients with late-onset schizophrenia have similar symptoms to those with early-onset schizophrenia, they are more likely to complain of hallucinations, persecutory delusions and partition delusions, and they are less likely to display formal thought disorder, affective flattening or blunting than their earlier-onset counterparts. Like early-onset schizophrenia patients, late-onset schizophrenia patients exhibit nonspecific structural changes in the brain. Although the exact prevalence of late-onset schizophrenia is not yet known, the 1-year prevalence rate of late-onset schizophrenia was found to be less than 1%. There is no trial-based evidence to help guide the choice of drug, however a number of special considerations are necessary when managing elderly patients. Conclusions-In the past few years, late-onset psychosis has begun to arouse the interest of psychiatrists, with research into late-onset schizophrenia being a relatively recent endeavor. The diagnosis and treatment of psychotic symptoms in elderly patients requires more than just extrapolation from that of young patients. There is a necessity for further researches involving Korean late-onset psychosis patients.
Byeongkil Shin,Heesoo Lee,Hyun Park 대한금속재료학회(구 대한금속학회) 2016 대한금속·재료학회지 Vol.54 No.10
The effect of added WO₃ on the catalytic activity and surface characteristics of the MnOx-TiO₂ system was investigated for the low-temperature selective catalytic reduction of NOx with NH₃. Based on physio-chemical characterizations, the specific surface areas of the WO₃-MnOx-TiO₂ catalysts increased from 76.12m²/g to 90.29m²/g as the WO₃ content increased, and crystallinity of the anatase TiO₂ phase decreased. The NOx conversion efficiency of the WO₃-MnOx-TiO₂ catalysts with WO₃ contents was over 70% at 200 °C, and their efficiency was over 90% at 300 °C. The results of Fourier transform infrared spectroscopy indicated that the 1438 and 1632 cm-1 values, which were assigned to Lewis and Brønsted acid sites, increased with the increase in WO₃ content. The enhanced catalytic acidity originated from changes to the physical and chemical structures on the surface. MmOx formed on the TiO₂ surface of the 15 wt% WO₃-doped MnOx-TiO₂, and amorphous state Mn2O3 (Mn3+) and WO3 (W6+) existed on the surface, which led to the improved Lewis and Brønsted acid sites, respectively.
A Review of the Notion of Social Construction of Gender from a Sociolinguistic Perspective
Byeongkil Ahn,Eun Jung Cho 언어과학회 2019 언어과학연구 Vol.0 No.88
This paper aims to explore the social construction of gender by utilizing some of the literature on the concept of gender, subject positioning, construction, construal, and performance from the linguistic perspectives, especially in relation to discourse. The study mainly focuses on the notion of ‘gender as performance’ and emphasizes how society constructs individual gender in public discourse and how individuals abide the gender norm by performing gender identities for the benefit of both others and themselves. This paper tries to address the empirical research in the light of Butler’s point of view despite the fact that many important questions are challenging her notion of gender and performance.
Dialogical approach to Korean education
ByeongKil Ahn 영미어문학회 2006 영미어문학연구 Vol.22 No.1
한국교육의 주입식 교육이 여전히 실행되면서 학교와 학교에 요구하는 기대치가 너무 다른 시점에서 대화를 통한 교육방법을 제시하고 있다. 이 연구는 전통적으로 행해졌던 교사 중심적인 일방적인 교육방법에서 벗어나 학생과 교사, 학교행정과 교사, 부모와 교사간의 관계를 대화로서 해결해가자는 이론을 제시하고 있다. 대화가 모든 문제를 해결해주는 해결책은 아니지만 현 교육문제를 조금이나마 해결하고자하는 하나의 방식이며 이에 대한 이론적인 근거를 제시한다.
Byeongkil Ahn 한국언어과학회 2020 한국언어과학회 학술대회 Vol.2020 No.10
There have been many heated debates about the definitions of some near- synonyms. In particular, it is very difficult for English non-native speakers to distinguish among English synonyms and use them in appropriate contexts even if we look up the meanings in an English dictionary, which are sometimes more confusing. The objective of this study is to explore the distinctions between Destiny and Fate by means of ‘Binary Opposition(BO) Strategies’ proposed by Kim(2015). The basic idea of BO is that in order to distinguish sharply and effectively between a pair of near-synonyms, it is necessary to focus on a pair of (contextual) BO features, such as [actual vs. non-actual], [cause vs. effect], [controllable vs. uncontrollable] and [changeable vs. unchangeable] ect., and identify the critical differences between them. This demonstrates that in the case of non-interchangeable uses, ‘destiny’ and ‘fate’ are distinguished in the context by BO features like 1)[+divine vs. -divine](which means destiny can be influenced by man’s actions, whereas fate is seen as divinely planned), 2)[+controllable vs. -controllable](which means destiny is like an appointment you can make or change, whereas fate is like death you cannot avoid), 3)[+changeable vs. -changeable](which means while destiny is something we can actively shape and change. whereas fate is based on the notion that there is a natural order in the Universe which cannot be changed, no matter how hard we try, and 4)[future vs. past](which means destiny relates to the probable to almost certain future, whereas fate relates to events of the past).