• 한국CDE학회지
• /
• 제7권3호
• /
• pp.41-46
• /
• 2001

영상기반 모델링 및 렌더링은 1990년대 초반 이후 집중적으로 연구되기 시작한 분야로, 영상 자체를 입력으로 하여 출력 영상을 생성하여 자연스럽게 photorealism을 달성할 수 있고, scene의 복잡도에 무관한 렌더링을 가능케 한다. 본 논문은 파노라마 렌더링, light field 렌더링, LDI 렌더링을 중심으로 지난 10년 간에 걸친 영상깁ㄴ 모델링 및 렌더링의 연구 성과를 개괄한다.

• 안전기술
• /
• 제144호
• /
• pp.14-15
• /
• 2009

몸을 움츠리게 하는 차가운 날씨, 아침 일찍부터 두꺼운 외투를 걸치고 길을 나선다. 비가 온 뒤라 초겨울 하늘은 hds통 짙푸른 색으로 구름 한 점 없이 맑다. 충남 천안시 외국인 산업단지내에 위치한 LDI(LCD Drive IC) 제품 Package 전문반도체 회사 스테코, 이곳의 환경안전보건 파트를 책임지고 있는 이상천 안전관리자를 만났다.

• 한국인터넷방송통신학회논문지
• /
• 제10권1호
• /
• pp.81-90
• /
• 2010

본 논문에서는 계층적 깊이 영상을 H.264 기술로 부호화 시켜 압축된 데이터 크기를 확인하고, 복원된 각 영상의 품질 성능을 알아보았다. 3차원 워핑된 계층적 깊이 영상을 임계값에 따라 조정해 가면서 Filling 보간 실험을 하고 H.264 부호화 시켜 압축된 데이터 크기를 측정하였다. H.264/AVC 기술은 쉽게 비디오와 관련된 콘텐트에 대한 H.264 기술로 확장 될 수 있다. 그래서 깊이 정보를 포함하는 다시점 영상을 효과적으로 압축할 수 있는 계층적 깊이 영상 구조라는 새로운 콘텐트에 적용하는 방법을 제안하였다. 다시점 비디오 영상의 방대한 데이터 양을 감소시키며, 고품질의 영상을 제공하고, 에러 복원 기능이 강화되는 장점도 가지고 있다.

• 세라미스트
• /
• 제21권3호
• /
• pp.249-269
• /
• 2018

In conventional MALDI-TOF mass spectrometry, analyte molecules are known to be ionized by mixing with organic matrix molecules. As the organic matrix molecules are made into small fragments, they generate unreproducible mass peaks such that MALDI-TOF mass spectrometry is nearly impossible in the low mass-to-charge (m/z) range (< 1000). Additionally, the dried sample mixed with matrix were made as inhomogeneous crystal on metal plate. When the laser radiation was made on the sample crystal, the amount of generated sample ion was observed to be quite different according to the radiation point. Therefore, the quantitative analysis was very difficult even for the sample spots at the same concentration for the conventional MALDI-TOF mass spectrometry. In this work, we present laser desorption/ionization (LDI) mass spectrometry based on solid-matrices for the quantitative analysis of small molecules in the low m/z range by using MALDI-TOF mass spectrometry: (1) Carbon based nanostructures; (2) Semiconductor based nanomaterials; (3) Metal based nanostructures.

• 한국정보과학회논문지:소프트웨어및응용
• /
• 제36권11호
• /
• pp.947-954
• /
• 2009

본 논문은 입력받은 다수 이미지의 Visual Hull을 이용하여 Surfel 기반의 물체를 복원하는 새로운 방법을 제안한다. Sufel은 포인트 집합면을 효과적으로 근사하여 나타내는 포인트 표현 단위이다. LDC(Layered Depth Cube) Surfel 샘플링 방식에 입력 이미지로부터 근사되는 형상을 대표하는 Visual Hull의 개념을 연동하여 이미지로부터 물체의 Surfel 기하 정보를 생성할 수 있다. Surfel 표현 방식은 기존의 폴리곤 기반 방식에 비해 상대적으로 적은 메모리를 소모하고 LDC 해상도를 자유롭게 바꿀 수 있기 때문에, 대상 물체를 복원하는 품질을 조절 가능하며, 주어진 메모리 자원에 대해서 최대의 품질을 가진 결과를 얻을 수 있다.

• 동의신경정신과학회지
• /
• 제4권1호
• /
• pp.135-153
• /
• 1993

In order to observe clinical effects of Kwi-Bi-Tang(歸脾湯) and Sa-Mul-An-Shin-Tang(四物安神湯), I reached following conclusion through the physiochemical investigation the following results obtained. 1)In serum Lipid, only Total cholesterol is significantly decresed in medication group of Kwi-Bi-Tang(歸脾湯), but is not in the medicaton of Sa-Mul-An-Tang(四物安神湯). 2). The value of Cardiac enzyme is remarkably decreased in the medication group of Kwi-Bi-Tang(歸脾湯), Only AST is significantly decresed in the medication group of Sa-Mul-An-Tang(四物安神湯). 3) In determination of LDH isoenzyme, LDI is significantly decrease both in the medication group of Kwi-Bi-Tang(歸脾湯) and Sa-Mul-An-Shin-Tang(四物安神湯). Especially, LDI is remarkably decreased in the medication group of Kwi-Bi-Tang(歸脾湯). In view of the results so far achieved, we knew that Kwi-Bi-Tnag(歸脾湯) and Sa-Mul-An-Shin_Tang(四物安神湯) had improved ischemic condition of cardiac muscle, specially, Kwi-Bi-Tnag(歸脾湯) was significant compared to Sa-Mul-An-Shin-Tang(四物安神湯).

• 환경영향평가
• /
• 제15권6호
• /
• pp.443-452
• /
• 2006

Today, satellite remote sensing (RS) and geographic information systems (GIS) plays an important role as an advanced science and technology. This study was developed a Line Density Algorithm which was clarify and describe the thermal front by using NOAA SST (sea surface temperature) and GIS spatial analysis for systemic and effective management of fish raising industry and sea environmental pollution by land reclamation program. Before this, a study about a interpolation method was carry out which was very important for estimate the hidden value between a special point. For this study Inverse Distance Weighted interpolation, Spline interpolation, Kriging interpolation methods were choose and SST data from 2001 to 2004 in spring (March, April, May) were analyzed. According to the study Kriging interpolation method was the very adaptive method from a practical point of view and excellent in description and precision then others. Finally, the result of this study will be use for develope the Line Density Index Algorism.

• 한국전기전자재료학회논문지
• /
• 제21권3호
• /
• pp.213-216
• /
• 2008

The voltages for pixel electrodes on LCD panels are supplied with analog voltages from LCD Driver ICs (LDIs). The latest LDI developed for large LCD TV's has suffered from the degradation of analog output characteristics (target voltage: AVO and output voltage deviation: dVO). By the failure analysis, humps in $I_D-V_G$ curves have been observed in high voltage (HV) NMOS devices for input transistors in amplifiers. The hump is investigated to be the main cause of the deviation for the driving current in HV NMOS transistors. It also makes the matching between two input transistors worse and consequently aggravates the analog output characteristics. By simply modifying the active layout of HV NMOS transistors, this hump was removed and the analog characteristics (AVO &dVO) were improved significantly. In the help of the improved analog characteristics, it also became possible to reduce the size of the input transistors less than a half of conventional transistors and significantly improve the integration density of LDIs.

• BMB Reports
• /
• 제53권7호
• /
• pp.349-356
• /
• 2020

Mass spectrometry (MS) is an ideal tool for analyzing multiple types of (bio)molecular information simultaneously in complex biological systems. In addition, MS provides structural information on targets, and can easily discriminate between true analytes and background. Therefore, imaging mass spectrometry (IMS) enables not only visualization of tissues to give positional information on targets but also allows for molecular analysis of targets by affording the molecular weights. Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) MS is particularly effective and is generally used for IMS. However, the requirement for an organic matrix raises several limitations that get in the way of accurate and reliable images and hampers imaging of small molecules such as drugs and their metabolites. To overcome these problems, various organic matrix-free LDI IMS systems have been developed, mostly utilizing nanostructured surfaces and inorganic nanoparticles as an alternative to the organic matrix. This minireview highlights and focuses on the progress in organic matrix-free LDI IMS and briefly discusses the use of other IMS techniques such as desorption electrospray ionization, laser ablation electrospray ionization, and secondary ion mass spectrometry.

• 한국생산제조학회지
• /
• 제19권6호
• /
• pp.834-840
• /
• 2010

Photo lithography process is very important technology to fabricate highly integrated micro patterns with high precision for semiconductor and display industries. Up to now, mask type lithography process has been generally used for this purpose; however, it is not efficient for small quantity and/or frequently changing products. Therefore, in order to obtain higher productivity and lower manufacturing cost, the mask type lithography process should be replaced. In this study, a maskless lithography system using the DMD(Digital Micromirror Device) is developed, and the exposure condition and optical properties are analyzed and simulated for a single beam case. From the proposed experimental conditions, required exposure experiments were preformed, and the results were investigated. As a results, 10${\mu}m$ spots can be generated at optimal focal length.