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이종접합 Gate 구조를 갖는 수평형 NiO/Ga<sub>2</sub>O<sub>3</sub> FET의 전기적 특성 연구
이건희 ( Geon-hee Lee ),문수영 ( Soo-young Moon ),이형진 ( Hyung-jin Lee ),신명철 ( Myeong-cheol Shin ),김예진 ( Ye-jin Kim ),전가연 ( Ga-yeon Jeon ),오종민 ( Jong-min Oh ),신원호 ( Weon-ho Shin ),김민경 ( Min-kyung Kim ),박철환 ( 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.4
Gallium Oxide (Ga<sub>2</sub>O<sub>3</sub>) is preferred as a material for next generation power semiconductors. The Ga<sub>2</sub>O<sub>3</sub> should solve the disadvantages of low thermal resistance characteristics and difficulty in forming an inversion layer through p-type ion implantation. However, Ga<sub>2</sub>O<sub>3</sub> is difficult to inject p-type ions, so it is being studied in a heterojunction structure using p-type oxides, such as NiO, SnO, and Cu<sub>2</sub>O. Research the lateral-type FET structure of NiO/Ga<sub>2</sub>O<sub>3</sub> heterojunction under the Gate contact using the Sentaurus TCAD simulation. At this time, the VG-ID and VD-ID curves were identified by the thickness of the Epi-region (channel) and the doping concentration of NiO of 1 × 10<sup>17</sup> to 1 × 10<sup>19</sup> cm<sup>-3</sup>. The increase in Epi region thickness has a lower threshold voltage from -4.4 V to -9.3 V at I<sub>D</sub> = 1 × 10<sup>-8</sup> mA/mm, as current does not flow only when the depletion of the PN junction extends to the Epi/Sub interface. As an increase of NiO doping concentration, increases the depletion area in Ga<sub>2</sub>O<sub>3</sub> region and a high electric field distribution on PN junction, and thus the breakdown voltage increases from 512 V to 636 V at I<sub>D</sub> =1 × 10<sup>-3</sup> A/mm.
Clinical features of elderly chronic urticaria
( Ga Young Ban ),( Mi Yea Kim ),( Hye Soo Yoo ),( Dong Ho Nahm ),( Young Min Ye ),( Yoo Seob Shin ),( Hae Sim Park ) 대한내과학회 2014 The Korean Journal of Internal Medicine Vol.29 No.6
Background/Aims: Chronic urticaria (CU) is defined as itchy wheals lasting 6 weeks or more. As the aged population increases worldwide, it is essential to identify the specific features of this disease in the elderly population. Methods: We investigated the prevalence and clinical features of CU in elderly patients. Medical records of 837 CU patients from the outpatient Allergy Clinic of Ajou University Hospital, Korea were analyzed retrospectively. Patients with chronic spontaneous urticaria according to the EAACI/GA2LEN/EDF/WAO guidelines were included. Patients older than 60 years were defined as elderly. Results: Of the 837 patients, 37 (4.5%) were elderly. In elderly versus nonelderly CU patients, the prevalence of atopic dermatitis (AD) was significantly higher (37.8% vs. 21.7%, respectively; p = 0.022), while that of aspirin intolerance was lower (18.9% vs. 43.6%, respectively; p = 0.003) in terms of comorbid conditions. The prevalences of serum specific immunoglobulin E antibodies to staphylococcal enterotoxin A and staphylococcal enterotoxin B were considerably higher in elderly CU patients with AD than in those without AD (37.5% vs. 0%, respectively). Conclusions: Elderly patients with CU had a higher prevalence of AD. Therefore, there is a need to recognize the existence of AD in elderly CU patients.
S-522 : Clinical features of elderly chronic urticaria
( Ga Young Ban ),( Mi Yea Kim ),( Hye Soo Yoo ),( Dong Ho Nahm ),( Young Min Ye ),( Yoo Seob Shin ),( Hae Sim Park ) 대한내과학회 2013 대한내과학회 추계학술대회 Vol.2013 No.1
Background: Chronic urticaria (CU) is defined as itchy wheals lasting for at least 6 weeks, with or without angioedema. It is a common disabling disorder occurring in about 0.5-1% of the population. Recently, the aged population is increasing worldwide, and this group responds differently to environmental stimuli. Therefore, it is essential to identify the specific features of disease in aged group. Nevertheless, there have been few studies reporting the features about CU in the elderly population. We investigated the prevalence and clinical features of elderly CU in comparison with non-elderly CU in this country. Method: We retrospectively analyzed the medical records of 827 CU patients who were followed in the outpatient Allergy Clinic of Ajou University Hospital, South Korea. According to the EAACI/GA2LEN/EDF/WAO guideline, physical or other secondary types of urticarial patients were excluded, and chronic spontaneous urticarial patients were included. Elderly CU was defined as the CU patients older than 60 years old. Severe CU was defined when urticaria activity score was ≥13 at initial visit. Results: Of the total 827 patients, 37 (4.5%) were elderly. Among co-morbid conditions, atopic dermatitis (AD) was significantly higher (37.8% vs. 21.7%, p=0.022), while prevalence of aspirin intolerance was lower (18.9% vs. 43.6%, p=0.003) in elderly CU. However, prevalence of severe CU was not significantly different between the two groups. Other clinical parameters such as sex, atopy and laboratory findings including anti-thyroid antibodies and serum specific IgE to staphylococcal superantigens were found to have no significant differences between the two groups. However the prevalences of serum specific IgE to staphylococcal enterotoxin A (SEA) and staphylococcal enterotoxin B (SEB) were significantly higher in elderly CU with AD than in those without AD (37.5% vs. 0%, respectively). Conclusion: Considering the higher prevalence of AD in elderly CU, it is needed to observe the coexistence of AD in elderly CU. Specific IgE to SEA/SEB may play a role in the pathogenesis of elderly CU, especially who are accompanied by AD.
휠체어무용수 삶에 미치는 소진(Burn out)에 관한 현상학적 연구
손가예 ( Ga Ye Sohn ) 대한무용학회 2021 대한무용학회논문집 Vol.79 No.2
This study investigated the causes of burnout experienced by wheelchair dancers from the emotional, physical, and artistic level, and analyzed the effects of burnout on the personal and social lives of wheelchair dancers. This study is a phenomenological study conducted through in-depth interviews and participatory observation. The burnout experienced by wheelchair dancers was classified into psychological/emotional burnout, physical burnout, and cultural/artistic burnout. The psychological ·emotional burnout of wheelchair dancers came from the stress caused by wheelchair dance and the stress in group life. Psychological and emotional burnout often leads to turnover and change of job. Physical burnout occurred due to large and small physical and physical problems caused by the dance performance. Cultural and artistic burnout was caused by a lack of artistic ability, a poor economic environment, and a poor performance environment.
강가예(Ga-ye Kang) 공주대학교 교육연구소 2022 교육연구 Vol.37 No.1
본 연구는 평생교육 강사의 역량과 전문성에 관한 연구 동향을 파악하고 향후 연구가 나아가야 할 방향을 탐색하는데 목적을 두고 수행하였다. 이를 위해 2008년부터 2021년까지 발표된 평생교육 강사의 역량 및 전문성에 관한 학위논문 38편과 학술논문 25편, 총 63편을 대상으로 평생교육 강사 활동 영역, 연구 목적, 연구 방법, 연구 참여자 유형, 역량과 전문성의 구성요소를 분석하였다. 분석 결과, 평생교육 강사 활동 영역은 별도의 교육의 영역구분 없이 연구된 경우가 가장 많았고, 연구목적은 역량강화에 대한 연구가 전문성 개발 보다 월등히 많은 것으로 나타났다. 연구방법은 질적연구가 높게 나타났으며, 연구참여자 유형은 강사와 학습자, 기획자, 학부모까지 확장된 것을 확인할 수 있었다. 역량과 전문성의 구성요소를 분석한 결과 역량은 지식, 기술, 태도를, 전문성은 지식, 경험, 문제해결과 함께 ‘창의성’과 ‘가치·목표·습관’도 함께 구성요소로서 포함하고 있었다. This study was conducted to identify the research trends on the competence and professionalism of lifelong education instructors and to explore the direction in which future research should proceed. To this end, 38 degree papers on the competency and professionalism of lifelong education instructors, 25 academic papers, and a total of 63 articles pubilshed from 2008 to 2021 were analyzed for the lifelong education instructor activity field, research purpose, research method, type of research participants, and components of competency and professionalism. As the results of the analysis, it was found that in the lifelong education instructor activity field, integrated topics without a separate education area was most often studied and as the purpose of research, it was found that there were far more studies on competence strengthening than professional development. As for the research method, qualitative research was high, and it was confirmed that the type of research participant expanded to instructors, learners, planners, and parents. As a result of analyzing the components of competency and professionalism, competency included knowledge, skill, attitude, and professionalism included knowledge, experience, and problem solving, as well as 'creativity' and 'values, goals, and habits' as components.