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.

카이로프랙틱 도수요법에 의한 경추성 두통의 치료

장재호,사공은성 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.4

Purpose : Cervicogenic headache is a neck induced headache syndrome. Chiropractic Spinal Manipulation Therapy (CSMT) is non-invasive treatment method for painful lesion. CSMT is considered to relief the pain and increase the range of motion of cervical spine without complications. Materials and Methods : A follow-up observation has been made by retrospective study after applying chiropractic spinal manipulation therapy on 28 cases of cervicogenic headache patients who visited our hospital from April 2005 to April 2007. Every patiens had performed Short-Form McGill Pain Questionnaire, Neck Disability Index, and SF-36 Questionnaire. Results : 28 patients average age was 37(14∼73). Female patient was 23 out of 28 and 5 was male patients. The average duration of treatment was 13.6 weeks. The Short-Form McGill Pain Questionnaire, in which questions about the level of pain in general and the Pain Relating Index (PRI), was 11.7 in average before chiropractic spinal manipulation and 3.7 in average after manipulation (P=0.196). The Visual Analog Scale (VAS 0-10) showed pain decrement from 6.1 to 3.1 after manipulation (P=0.126). PPI showed improvement from 2.75 to 0.5 after manipulation(P=0.1). In the Neck Disability Index, which questions the physical disability due to pain, the decrement in average was 14.6 to 4 after manipulation. The results of SF-36 Questionnaire, which deals with the patient's general health showed decrement from 57.8. to 69.4(P=0.317) after manipulation. Conclusion : CPMT has pain relieving effects in cervicogenic headache and also shows increased neck range of motion after treatment. Therefore, CSMT can be a one of useful treatment method for cervicogenic headache.

도심지역 이동통신의 전파특성 모델

장자영,노순국,박종천,김재섭,박성렬,박창균 조선대학교 동력자원연구소 1996 動力資源硏究所誌 Vol.18 No.1

To predict accurately an antenna radiation pattern is very important for determining of a service area, base-station location, cell design. In this paper, we have calculated a propagation prediction data of Hata, Egri, Carey, Free Space Loss model by a computer simulation in Kwang-ju downtown, and the data is compared with field test data. As a results, Hata and Egri model are approached to field test data, but considerable errors are detected.Conclusively, we believe that the most accurate prediction model must propose to improve the radio propagation environments for the specified region. For resolve these problems, we are proposed a mew experimental radio wave propagation predict model.

S-밴드 레이다에서의 電磁波 現象에 關한 硏究

張宰成,高興眞,康富植 제주대학교 1993 논문집 Vol.37 No.-

. It is necessary to clarify radio duct properties and clutter in order to estimate propagation characteristics for radar system. Clutter generates by radar echos make difficult the detection of wanted target. Clutter echos limit the sensitivity of a radar receiver, and determining the range performance. For these circumstance, the optimum radar waveform and receiver must be designed by the other way which is considered only the receiver noise effect. In this paper, analysis radio duct properties, occurrence probabilities, land and sea clutter in a S-Band radar were investigated. The ground clutter-to-noise ratios, the target signal-to-noise ratios and the signal-to-noise-plus-clutter ratios are calculated by the parameters of a S-band radar.

保存血의 腐敗産物에 依한 에틸알콜 生成濃度에 關한 硏究(Ⅱ)

張成吉,金英雲,柳在薰,權五星,朴世延 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-

生體血의 保存環境과 腐敗産物에 依한 血中알콜濃度變化에 關한 硏究

張成吉,金英雲,柳在薰,吳世珍,權五星,朴世延 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.-

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.-

혈액 종양환자에서 Tobramycin의 임상약동학

신재국,신완균,장인진,신상구,김성민,배현주,최강원,김진규 대한화학요법학회 1990 대한화학요법학회지 Vol.8 No.1

항암화학요법을 받고 있던 중 감염으로 tobramycin을 투여받은 36명의 혈액종양 환자에서 tobramycin의 약동학적 특성을 비종양환자군에서의 population 값과 비교 검토하였다. 이들은 모두 정상 신기능을 가진 16세 이상의 성인남녀(21:15)백혈병 환자들이었다. 36명의 혈액종양 환자에서 산출된 tobramycin의 청소율 및 체내분포용적은 각각 120.3± 27.2ml/lg/hr 및 0.386± 0.11 L/㎏로 population 추정 치보다 유의하게 큰 값을 보였다.(P. <0.05).청소율과 체내분포용적을 해당 population 추정치로 나눈 비율치(ratio)의 평균값은 각각 1.47± 0.34 및 1.20± 0.34였다. 연령, hematocrit치, 혈청albumin치, 발열 및 항암화학요법기간과 tobramycin의 청소율 및 체내분포용적 사이에 유의한 상관관계는 발견할 수 없었다. 본 연구결과 혈액종양 환자에서 tobramycin 투여시는 적정혈장농도를 유지하기 위해 일반 환자군에 비해 용량의 증가 및 투여간격의 조정이 필요하며 지속적인 혈장농도 monitoring을 통하여 용법의 재적정화가 필요할 것으로 사료된다. The pharmacokinetics of tobramycin were evaluated in 36 hematologic malignancy patients undergoing anticancer chemotherapy and compared to the expected values from the population parameters. Total body clearance(mean : 12.3±27.2㎖/㎏/hr) and volume of distribution (mean : 0.386±0.11 L/㎏) in hematologic malignancy patients with normal renal function were significantly greater than those of estimated from population parameter distribution(P<0.05). The ratios of total body clearance and volume of distribution to the population estimates were 1.44±0.37 and 1.20±.034, respectively. No relationships were found between age, hematocrit, serum albumin, fever or duration of anticancer chemotherapy and pharmacokinetic parameters. It is suggested that the increment of tobramycin dose regimen wold be considered in patients with hematologic malignancy, and dose readjustment followed by close monitoring of plasma drug concentration would be required.

국내 카드뮴 취급 사업장의 카드뮴 폭로 실태 평가

강성규,홍정표,김기웅,장재연,정호근,정규철 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.2

Twenty-four factories registered at the Ministry of Labor as factories using or producing cadmium in 1991 were investigated to know the present state of occupational exposure to cadmium in 1992. Nine factories among 24 stopped using or changed to other substances and 1 factory didn't produce any more, but delivered it to other factories through imports. Therefore, only 14 factories were producing or using cadmium. But, alloying materials were supplied to about 20 and more factories, however, they couldn't be investigated because of limited information. Three factories had less than 50 workers were 3,6 had 50-300 and 5 had more than 300. About 167 workers were exposed to cadmium. According to the classification by process, there were 4 alloy processes, 2 refinary, 2 elctroplating, 2 dry cell making, 1 industrial battery making, 1 duplicator drum making, 1 recycling of battery and 1 copper refinary. 8 factories used metal cadmium, 3 cadmium oxide, 2 cadmium sulfide, and 1 cadmium hyroxide. One factory was importing cadmium stearates only and supplying them to the PVC making factories. The amount of metal cadmium producing in 2 refinary factories was about 50-65 ton per month. The other cadmium compounds were imported. According to exposure level of cadmium air of the 10 factories examined, each factory could be divided into high, moderate and low exposure groups. 1 battery recycling factory and 3 alloy factories were in the high exposure group and their mean air concentrations were 0.06679, 0.05481, 0.02492, and 0.003㎎/㎥, respectively. Refinary and industrial battery making factories were in the middle exposure group and their mean air concentrations were 0.00773 and 0.00613 ㎎/㎥, respectively. Finally, low exposure group were copper smelting, dry cell case making, duplicator drum making and electroplating factory and their mean air concentrations were 0.00096, 0.00071, 0.00057 and 0.00054 ㎎/㎥ respectively.

씨름 지도자의 지도유형 분석에 관한 연구

홍장표,권창기,이재학,성낙훈 龍仁大學校 武道硏究所 2003 武道硏究所誌 Vol.14 No.1

The purpose of this study was to inquire leadership types of coaches engaged in Ssirum and to provide fundamental data for improvement of their leadership by analyzing their leadership types based on several variables such as age, Ssirum teams, training career, personal game record, and team game record. The results of this study are as follows: First, according to the analysis of the degree of leadership types in relation to the age of Ssrium players, the result showed that there were significant differences on democratic, autocratic, social support, and positive feedback except for training(P<.05). Second, according to the analysis of the degree of leadership types in relation to the Ssirum teams, the result showed that there were significant differences on training, democratic, autocratic, social support, and positive feedback(p<.05). Third, according to the analysis of the degree of leadership types in relation to the training career of Ssirum players, the result showed that there were no significant differences on training, democratic, autocratic, and positive feedback. On the contrary, there was significant difference on social support(p<.05). Fourth, according to the analysis of the degree of leadership types in relation to the personal game record of Ssirum players, the result showed that there were no significant differences on autocratic and social support. On the contrary, there were significant differences on training, democratic, and social support(p<.05). Fifth, according to the analysis of the degree of leadership types in relation to the team game record of Ssirum players, the result showed that there were no significant differences on autocratic. On the contrary, there were significant differences on training, democratic, social support, and positive feedback(p<.05).