비정질 인듐갈룸ᅳ아연-산화물 박막트랜지스터 기반의 AMOLED 화소 회로

이재표(Jae-Pyo Lee),유경민(Kyeong-Min Yu),장진녕(JinNyoung Jang),홍문표(MunPyo Hong),배병성(Byung Seong Bae) 호서대학교 공업기술연구소 2013 공업기술연구 논문집 Vol.32 No.2

본 논문은 비정질 인둠ᅳ갈f ᅳ아연-산화물 박막트랜지스터 (a-IGZO TFT)를 이용하여 능동형 유기발광다이오드 (AMOLED)용 문턱전압(Vth )을 보상하는 화소 회로를 제안하였다. 산화물 TFT는 n-채널 TFT로써, 우리는 n-채널 TFT 특성으로 회로를 최적화하였다. 제안된 화소 회로는 회로 시뮬레이션 뿐만 아니라 회로 분석을 이용하여 확인되었다. 제안된 화소 회로는 AMOLED에서 구동 TFT의 문턱전압 변화를 보상할 수 있다. 제안된 화소 회로를 이용함으로써, 문턱전압 보상은 달성되었다. rhis paper proposes a tnresnold voltage compensation pixel circuit for active-matrix organic light-emitting diode (AM OLED) using amorphous indium-gaUiimi-zinc-oxide thin-film transistors (a-IGZO TFTs), Oxide TFT is an n-channel TFT; therefore, we optimized the circuit for the n-channel TFT characteristics. The proposed pixel circuit was verified using circuit analysis as well as circuit simulations. The proposed circuit could compensate for the threshold voltage variations o f drive TFT in AM OLED. Using the proposed pixel circuit, threshold voltage compensation was achieved.

알코올에 의해 유발된 진정 및 수행 장애에 대한 카페인의 반전 효과

유남재,김정란,조정혜,왕성근 대한생물치료정신의학회 2004 생물치료정신의학 Vol.10 No.1

연구목적 : 저자들은 알코올의 진정 작용과 수행 붕괴 효과에 대한 카페인의 영향을 확인하기 위해 이 연구를 시행하였다. 방 법 : 건강한 19세에서 25세 사이의 대학생 지원자 14명을 대상으로 Epsworth Slippiness Scale(ESS), Stand-ford Sleepiness Scale(SSS), Visual Analogue Sclae(VAS), Vienna test, Multiple Sleep Latency Test(MSLT) and Breath Ethanol Concentration(BrEC)을 측정하였다. 결 과 : 알코올(1.0g/㎏)은 투여 후 5시간까지 입면잠복기를 단축시키며, 카페인(300mg)은 이러한 단축을 현저히 개선시키는 반전 효과가 있었다. 알코올(1.0g/㎏)은 투여 후 3~5시간 동안 주간 졸음과 피로감을 유발하며, 카페인(150~300mg)은 졸음과 피로감을 개선시키는 효과가 있었다. 경계력은 알코올(0.5~1.0g/㎏) 투여 1시간 후 유의하게 저하되었고 카페인(150~300mg) 투여 3시간 후부터 개선되었으며, 집중력은 알코올(1.0g/㎏) 투여 후 변화가 없었으나 카페인 투여 3시간 후부터 유의하게 향상되었고, 단기 기억은 알코올과 카페인 투여에 유의한 변화가 나타나지 않았다. 기준일, 알코올 투여일, 알코올 및 카페인 투여일에서 각 변량(SSS, MSLT, 졸음, 피로감, 기분, 집중력, 경계력, 단기 기억력)간에는 일관성 있는 유의한 관계가 나타나지 않았다. 정상인에서 알코올은 입면잠복기를 단축시키고 주간 졸음과 피로감을 유발하며, 카페인은 알코올에 의해 유발된 입면잠복기의 단축을 연장시키고 주간 졸음과 피로감 및 경계력과 주의 집중력을 개선시키는 효과가 있었다. 결 론 : 카페인은 알코올의 진정 및 수행 붕괴 효과를 반전시키는 효과가 있음을 알 수 있었다. Objectives : The authors performed this study to identify the effects of caffeine on the alcohoi's sedative and performance disruptive effects. Methods : Epsworth Sleeppiness Scale(ESS), Stanford Sleepiness Scale(SSS), Visual Analogue Scale WAS), Vienna test, Multiple Sleep Latency Test(MSLT) and Breath Ethanol Concentration(BrEc) were checked for the 74 young and healthy college student volunteers aging from 19 to 25 years. Results : Alcohol(1.0g/kg) freduced sleep latency until 5 hours after administration and caffeine(300mg) reversed this effect significantly. Alcohol(1.0g/kg) induced daytime sieepiness and fatigue 3-5 hours after administration and caffeine(l50-300mg) improved sleepiness and fatigue. Vigilance was decreased significantly 1 hour after alcohol administration(0.5-1.0g/kg) and improved 3 hours after caffeine administration(l50-300mg) and attention was not changed after alcohol administration(1.0g/kg) but improved significantly 3 hours after caffeine administration and short-term memory was not changed significantly after alcohol and caffeine administration. On the baseline, the day of alcohol administration only, and alcohol and caffeine administration day, between each vanable(SSS, MSLT, sleepiness, fatigue, mood, vigilance. concentration, and short-term memory) did not show significant consistent correlation. Conclusion : Alcohol decreases sleep latency and induces daytime sleepiness and fatigue, and caffeine prolonges sleep latency and improves daytime sleepiness, fatigue, vigilance and attention in normal subjects. These results showed caffeine reverses alcohol's sedative and performance-disruptive effects.

L-Moment 법을 이용한 지점가뭄빈도 해석

유재성,강인식,박준일,신형우 慶尙大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.15 No.-

In this research, the drought analysis was derived with monthly rainfall data from 59 stations from the Korea meteorological Administration. the point frequency analysis was derived with L-moment's method and indicated the fitted probability distribution for 59 points. also estimating the probability drought rainfall of the duration(4, 6, 8, 10, 12 months) and return period(2, 5, 10, 20, 50, 100 years). Thus, indicated probability drought rainfall frequency figure for whole area of country.

연강우량 자료를 이용한 수문시계열의 특성 분석

유재성,강인식,박준일,신형우 慶尙大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.15 No.-

As the water resources planning is work out, it should have stationarity and randomness to be used hydrological time series data for frequency analysis or modeling which are kinds of probability analysis. But, in the case of domestic, we assume that the hydrological time series data is stationarity but, is not randomness, so it is usual to work out the hydrological analysis. Therefore, as a result, we can not be eliminate the possibility that the hydrological analysis brings about distorted results. Accordingly, in this research, to analysis the properties of hydrological time series data, the trend test, stationary and randomness test were used. The summary of results is as below. Result of the properties of hydrological time series data, in most of the points, the tendency is not indicated, the time series was revealed as randomness which does not have hydrological persistence as definitely stationary. But, from data of yearly rainfall, points for Taegwallyong, Ullungdo, both nonstationarity and persistence were indicated.

기업특성변수가 ABCM 시스템의 도입과 기업내부고객의 만족도에 미치는 영향에 관한 연구

유성재,이동찬 中央大學校 經營硏究所 2000 經營學論集 Vol.26 No.2

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

시각장애인의 유산소성 운동이 체력에 미치는 영향

박재성,김주혁,황영성,김도호,이수판,한성유,허정석 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

This research fulfilled the program of aerobic exercise for living during 6 months with seven men and women who are disabled people with visual impairment, The program consists or gym, swimming, aerobic and running, During 6 months, all exercises were executed 1 hours, twice a week for 6 weeks. Each exercise had self-servant and was carried out 60 minutes with teaching method of special directors in every weep Physique by height, weight, condition of exercise ability by the capacity of the lungs of the heart and lung endurance and intake of the maximum oxygen, muscular strength of stomach, grasping power, pliability by forward bending with the upper part of the body, instantaneous force of muscle in a sudden jump, muscular endurance by put-up and sit-up, agility by side-step and response of the whole body, and balance by one leg standing while closing eyes as using Helmas (sewoo systems korea) were measured. The Results, 1.There is a significant difference for both men and women in the capacity of the lungs and the heart and lung endurance, However only women have a significant difference in intake of the maximum oxygen. 2. Both men and women have a significant difference in muscular strength of stomach and grasping power to measure muscular strength. 3. Both men and women have a significant difference in forward bending with the upper part or the body to measure flexibility. 4. Sudden jump to measure instantaneous force of muscle, sit-up, and push-up to measure muscular endurance show that both men and women have a significant difference.(p<.01) 5. Side-step and response of the whole body to measure agility show that both men and women have a significant difference. 6. One leg standing with closing eyes to measure balance show that both men and women have a significant difference.

한국과 호주의 스쿼시 경향과 향후 추세에 관한 비교 연구

한성유,황영성,박재성,허정석 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

This research is based on squash professionals opinion, precedent literature as well as other books and internet-researched information. In hopes that squash will not only become a more life-time sport, but a profession collegiate sport as well, and help change the publics recognition as an elite sport, and become an opportunity for professional literature and researches will recognize squash as a learning field: and in doing so, provide a compilation of strategic plans based on those of Australia to set a basic foundation. As a result of this research: 1. Financial independence must be acquired through more company sponsorship and T.V. broadcasting of squash games. 2. Municipal and provincial branch must become more autonomous through horizontal relationship. 3. A thorough reeducation course is needed to increase the quantity, but the quality of present Korean coaches and players. 4. Regulations and laws regarding the establishment of squash facilities must be drafted to avoid users from being exposed to danger through thoughtless governmental approval. If regulations and laws suitable for Korea conditions are created based on those of more advanced nations, then squash in Korea will continue on its path to further development.

정상인에서 부분적 수면박탈이 수면구조에 미치는 영향

왕성근,이정규,이충숙,최하석,유남재,정인형,이선우 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2

To identify the effects of partial sleep deprivation on the sleep structure, the authors performed polysomnographic study for 9 healthy young adults. The subjects were college students, ranging in age from 20 to 25 years, without personal past or present histories of medical, neurological, or psychiatric illness and suffering from current sleep disturbance or parasomomnias. Sleep records were analyzed according to the criteria of Rechtschaffen and Kales' manual and tried paired t-test. The results were summarized as follows. 1. As for sleep parameters, total sleep time(TST), REM latency and REM duration were not changed significantly during deprivation period and recovery period compared with baseline. Sleep efficiency increased significantly during deprivation period and recovery period compaired with baseline, and sleep latency and WASO were shortened significantly during deprivation period and recovery period compared with baseline. 2. As for sleep structure, 1) The absolute value(minutes) of stage 1 decreased significantly during deprivation period and first recovery night compared with baseline, and the relative value(percentage) of stage 1 decreased significantly during deprivation period and recovery period compared with baseline. 2) The absolute value(minutes) of stage 2 decreased significantly during deprivation period compared with baseline, and the relative value(percentage) of stage 2 decreased significantly during deprivation period and first recovery night compared with baseline. 3) The absolute value(minutes) of slow wave sleep were not changed significantly during deprivation period and recovery period compared with baseline, and the relative value(percentage) of slow wave sleep increased significantly during recovery period compared with baseline. 4) The absolute value(minutes) of REM sleep decreased significantly during deprivation period compared with baseline, and the relative value(percentage) of REM sleep decreased significantly in the first deprivation night but, were not changed significantly during recovery period compared with baseline.

심장사상충증 이환견의 치료 1례

심재현,김유수,김건우,이병희,김지용,박성준,송근호 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

A 4-years old pointer dog was referred to the Veterinary Teaching Hospital of Chungnam National University with chief compliment of anorexia, exercise intolerance, hemoptysis, coughing and ascites. It was diagnosed as heartworm disease (class 3) by physical and laboratory examination, radiography, ultrasonography and electrocardiography. This dog was undertaken by adulticidal therapy. Normal conditions and good appetite after therapy were observed.