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.

플라즈마 질화법에 의한 SKD 11 공구강의 표면 경화에 관한 연구

유용주,이재식,공경준 울산대학교 1996 공학연구논문집 Vol.27 No.2

본 연구는 온도범위 450 - 650℃, NH₃ 가스유량 0.5 - 2.1 l/min., 처리시간 20 - 110분의 조건에서 SKD 11 냉간 금형용 공구강을 플라즈마 질화처리하여 강 표면에 생성된 경화층(화합물층 및 확산층)의 조성 및 두께와 각각의 경도값을 조사하여 질화의 최적조건을 찾고자 하였다. 반응온도 550℃, NH₃2.1 l/min., 반응시간 110분일 경우 14㎛의 최대 화합물층을 얻었으며, 반응온도 550℃, NH₃1.65 l/min.로 110분간 반응시켰을 때 생성된 확산층은 210㎛였으며, 최대 질화층은 220㎛이었다. 또한, 플라즈마 질화처리한 SKD 11 냉간 금형용 공구강 표면과 화합물층을 XRD로 분석한 결과 450℃와 500℃에서는 r' - Fe₄N + α - Fe로, 550℃에서는 r' - Fe₄N - ε -Fe₂₃N, 그리고 600℃ 이상에서는 r' - Fe₄N + α + Fe로 구성되어 있는 혼합상이었다. 550℃, NH₃1.65l/min., 80분간 질화처리 하였을 때 생성된 질화층의 최대표면경도는 Hv 1100이었다. The plasma nitriding of SKD 11 tool steel has been studied at the temperature between 450℃ and 650℃ with gas flow rate of NH₃ 0.5 to 2.1 l/min. for 20 to 110 minutes. The phases of compound layer formed below 500℃ and above 600℃ was mixtures of r'-Fe₄N and α- Fe phases, while the phases formed at 550℃ was r'-Fe₄N and ε-Fe₂₄N phases. The thichness of compound layer formed at 550℃ with gas flow of NH₃2.1 l/min. for 110 minutes was 14㎛. The thickness fo nitrided layer formed at 550℃ with gas flow rate of NH₃1.65 l/min. for 110 minutes was 220㎛. The nitrided layer was composed of 10㎛ compound layer and 210㎛ diffusion layer. The hardness of nitrided layer formed at 550℃ with gas flow rate of NH₃ 1.65 l/min. for 80minutes was Hv 1100.

艾靑의 生涯 硏究

兪景朝 한국중국문화학회 1995 中國學論叢 Vol.4 No.-

초등학교 저학년 아동의 글씨쓰기와 실행능력과의 상관관계

유승복,김진주,김경미 대한감각통합치료학회 2006 대한감각통합치료학회지 Vol.4 No.1

Objective : The purpose of this study was to examine the correlation between handwriting skills and praxis. Method : Participants consisted of 50 normal children who were the second-grade students at an A elementary school in Kim-hae. They didn't have a visual dysfunction, an auditory dysfunction, and a disease or an injury in arms and hands. They could follow examiners' directions properly. They were administered the Postural Praxis and the Praxis on Verbal Command of the Sensory Integration and Praxis Tests(SIPT)(Ayres, 2000) and the handwriting skill test which was made with reference to foreign literatures. It was conducted from October 19, 2004 to December 17, 2004. The data were analyzed with non-paired t-test, ANOVA, and Pearson correlation coefficient. Results : 1. Total handwriting score and praxis according to gender of children showed the statistically significant differences(p<0.05). 2. Total handwriting score correlated with praxis(p<0.05) and handwriting speed did not correlate with praxis. 3. Postural Praxis and Praxis on Verbal Command according to handwriting groups showed the statistically significant differences(p<0.05). 4. Among the standards of the handwriting skill test, accuracy of letter form, identity of letter size, spacing between letters and words, placing text on lines, error existence, and letter out of regular square correlated with the Postural Praxis(p<0.05), and accuracy of letter form, identity of letter size, and placing text on lines correlated with the Praxis on Verbal Command(p<0.05). Conclusions : The correlation between handwriting skills and praxis will help occupational therapists to provide fundamental and various treatment programs for children who are referred for the poor handwriting. But more studies in handwriting skills and praxis are necessary to decide which component of handwriting skills is related to praxis.

수종 Laminate Veneer용 도재간의 색차 비교

정유경,홍순호 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

The shade of prosthetic materials is very important for a successful restoration esthetically harmonized with the natural tooth. the purposes of this study were to evaluate the color differences that can exist between different brands of procelain laminate veneer systems with identical shade designations and to evaluate the color variations after luting with resin cement. For this purpose, the following experiments were done:4 kinds of porcelain laminate veneer specimens were fired to the same thickness and a resin cement of the same shade was luted to each porcelain laminate veneer specimen. Afterwards, the color of each specimen was determined and analysed by the colorimeter. The results were as follows: Corresponding shades of different brands of porcelain laminate veneer systems produced significantly different colors(p<.05). Color variations were found after luting with resin cement to the porcelain laminate veneer specimens(p<.05).

徐有本의 『진주순난제신전(晋州殉難諸臣傳)』 연구

임유경 한국어문학회 2004 語文學 Vol.0 No.86

Seo Yoobon(1762~1822) is noteworthy writer in 18 century. He wrote 『Jinju-soonnan-jesinjeon』 in 1794. 『Jinju-soonnan-jesinjeon』 is collected about commanders-in-chief who fight against the Japanese in Jinju on 1592-1593. The battle in Jinju was most tremendous during seven years war. Numerous soldiers was died, and on the defeated day several commanders-in-chief throw themselves into the river. Seo Yoobon represented the process of the battle very minutely, and men in the work is very individualistic. This work is contained many episode written in dialogue, so that the leading character is very vivid and the reality is acquired. And many person of opposite role provided the leading character with moral justification. This work is one of the group biography that was mass-produced after wars. It is concerned with narrative, the process of incident. So it has a form of jeon(傳) which is based on facts, but it is expressed by technique of novel style.

가족성 정신분열병 환자에서 임상 특성의 가족내 연관성

최경숙,이유상,장용이,조은영,전현옥,김창현,김상욱,홍경수 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.5

Objectives : This study aims at examining familial associations of symptoms and clinical characteristics in affected sibling or relative pairs of schizophrenia as an effort to identify genetically homogeneous phenotypes. Methods : Forty-seven relative pairs with DSM-IV diagnosis of schizophrenia from thirty-five Korean families multiply affected with schizophrenia were ascertained. Direct interviews were done using the Korean version of Diagnostic Interview for Genetic Studies (DIGS). The Krawieka Rating Scale and the Schedule for the Deficit Syndrome were also applied for further evaluation of psychopathologies. Intra-familial concordances and correlations of clinical characteristics and symptoms were tested using χ² -test and Spearman's correlation. Results : Significantly high concordance rate within relative pairs was found for the diagnosis of paranoid vs. non-paranoidsubtype (χ²=7.623, P=0.006, df=1). Deficit vs. non-deficit syndrome also showed significant concordance (χ² =3.850, p=0.0497, df=1). Among single symptom items in DIGS, only 'auditory hallucination' showed significant concordance rate ( χ² =5.503, P=0.019, df=1). Factor analysis for symptoms items in the Rrawiecka Rating Scale indicated three symptom dimensions ; negative, psychotic and affective, Psychotic (P =0.442, P=0.003) and affective dimension scores (p =0.427, P=0.004) showed significant intra-familial correlations. Age at onset of recognized psychotic symptoms showed significant correlation only within the male sibling pairs. Conclusion : Familial factors, Possibly genetic factor contribute to the phenotypic characteristics of paranoid vs. non-para-noid subtype, deficit vs. non-deficit syndrome, auditory hallucination, and affective syndrome, It supports their use in the delineation of homogeneous subgroups for future genetic studies.

현대건축의 형태표현에 나타난 '낯설게 하기(defamiliarization)'의 경향에 관한 연구

권유경,김성우,김영태 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2

본 연구는 1920년 러시아 문학의 현상으로 나타난 '낯설게 하기'의 이념을 현대건축의 조형표현 및 이론적 상관성으로 관련짓고자 한다. 현대건축에 있어서 중요한 이해와 경향인 '낯설게하기'를 통해 재발견되는 형식적인 표현으로써 현대건축에서 직접적 혹은 간접적으로 인용되고 있다. 내용보다 형식의 문제에 주목했던 러시아 형식주의의 '낯설게(defamiliarization)'을 통하여 현대건축에서 나타나고 있는 복잡성, 다양성, 혼성, 애매성 등을 제(諸)특성으로 보고, '낯설게 하기'의 목적과 수법들을 조형예술의 표현 특성 및 조형이념과 관련하여 건축적인 체계로 유형화하고 현대건축에서 나타나고 있는 경향 및 형태표현을 파악하는데 그 의의를 두고자 한다. This study related the idea of 'defamiliarization' in 1920's Russian Literature to the phenomenon of modern architecture and analyzed formative expression and theoretical correlativity. It is significant to understand the tendency of modern 'defamiliarization' which has comparatively been cited many times and expressed directly or indirectly in modern architecture. Expecially the 'defamiliarization' theory, with the experimental spirit of Russia constructivism, connected to formative art and can be related to the feature of complexity, variety, perplexity, conceptualization which are prominent in modern architecture. The meaning of 'defamiliarization' involves all the meanings of something new, creative, progressive and throughout this pursuing destruction of fixed idea, inhered newness, deautomatism in the process of consciousness usual environment, subconsciousness. This become the motive which formed important basis of making a new ideology in the formative art since Avant-garde and this logic offers theoretical basis correlated the Avant-garde spirit as a stream of breaking the existing convention.

게임 엔진에 지능적 구성 요소를 통합하는 제어 구조에 대한 연구

전현주,유견아 덕성여자대학교 자연과학연구소 2007 자연과학 논문집 Vol.13 No.-

최근 게임 개발자들의 관심을 끄는 기술은 게임 사용자들과 상호작용을 하는 게임 캐릭터의 개발에 필요한 인공지능이라고 할 수 있다. 이미 게임을 위해 복잡한 임무에 대한 계획을 세운다거나 일련의 동작 과정을 미리 결정하는 인공지능 기술들이 개발된 바 있는데 입력받은 정보에 대해 실시간 작업을 수행하도록 설계된 게임엔진과의 차이를 극복하고 통합할 수 있는 구조에 대한 연구가 필요하다. 본 논문에서는 인공지능 구성요소에서 생성된 계획을 기존의 게임엔진에서 인식할 수 있는 언어로 해석해주는 동작 생성기의 역할과 게임엔진의 실행에 의해 변화된 환경을 인지하 고 두 요소 사이의 일관성을 유지시켜주는 역할을 동시에 할 수 있는 동작제어구조를 제안한다.

뇌졸중 위험인자를 가진 어지럼 환자에서의 확산강조 자기공명영상

강형구,윤유상,이진희,박인철,이경룡,정상원,구홍두,김승호 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: The management of vertiginous patients is a great challenge to emergency physicians. We evaluated the diagnostic value of a diffusion-weighted image(DWI) in differentiating central vertigo from the peripheral vertigo in patients who presented no neurological symptoms other than risk factors for stroke. Methods: From March 2000 to February 2001, we retrospectively analyzed the cases of 68 patients who visited the emergency department with symptoms of isolated vertigo and who had risk factors for stroke. DWIs, computed tomograms(CT), and medical records were reviewed, and the final diagnose, the DWIs and the CT readings, the risk factors for stroke, and the time it took waiting for a DWI or CT scan were analyzed. Results: Of the 68 patients, 21(30.8%) had central vertigo: 15 vertebrobasilar transient ischemic attacks(VB-TIA), 4 brain stem infarctions, 1 cerebellar infarction, and 1 cerebellopeduncular infarction. The DWI showed a 28.6% sensitivity, a 97.9% specificity, and an 85.7% positive predictive value in diagnosing central vertigo. It also had a 100% sensitivity in detecting infarctions. Conclusion: A DWI had a comparable sensitivity to MRI in detecting central vertigo and small, but potentially, lethal infarctions in our patient population. We recommend clinical application of DWI in the emergency department evaluation of isolated vertigo patients with risk factors for stroke.