건조스트레스 유도성 고추(Capsicum annuum) cDNA 클론들의 분리 및 특성 분석

Thesis (master`s)--서울대학교 대학원 :협동과정 유전공학전공,2002.Maste

HIGH CROSSOVER RATE1 restricts the number of meiotic crossovers in Arabidopsis

Meiotic crossover creates new combinations of genetic variation and ensures balanced chromosome transmission. Crossover numbers per meiosis are tightly restricted in most eukaryotes, despite a large excess of initiating DNA double-strand break precursors. The majority of crossovers in plants are dependent on the Class I interfering repair pathway. A minority of crossovers are formed by the Class II non-interfering pathway. The Class II repair pathway is normally limited by multiple anti-recombination pathways. However, similar pathways that limit Class I interfering crossovers are not known. To identify repressors of crossovers, we performed a forward genetic screen using fluorescent crossover reporters, to identify mutants with changed recombination frequency. This screen identified the HIGH CROSSOVER RATE1 (HCR1) gene as repressing crossovers. Using genome-wide analysis we show that crossovers are most strongly increased in the euchromatic chromosome arms of hcr1. We observe a significant increase in MLH1 foci and the interference ratio in hcr1, consistent with a predominant effect on the Class I pathway. We used 2-hybrid and in planta assays to demonstrate physical interaction between HCR1 and multiple proteins within the Class I interfering pathway, including HEI10, PTD, and MSH5. Our data identify HCR1 as limiting the number of interfering Class I crossovers in plants. We propose that HCR1 acts in opposition to pro-recombination DNA repair or cell division kinases, in order to limit crossover numbers per meiosis.1

Specific DNA transposons act as enhancers of meiotic recombination in Arabidopsis

1

애기장대 개화억제에 필요한 SWR1 유사 복합체의 기능 분석

학위논문(박사)--서울대학교 대학원 :생명과학부,2007.Docto

스포츠 시설의 태양광 하이브리드 시스템에 대한 경제성 분석: 한국 경기장을 중심으로

학위논문(석사) - 한국과학기술원 : 기술경영전문대학원, 2016.2 ,[v, 38 p. :]The environment and energy conservation are two of the most frequently discussed social issues world widely. Though seemingly unrelated and being historically far from environmentally friendly, sports facilities are also closely linked to those issues as the trend of building and managing sports facilities is currently changing towards more green and sustainable way. Applying renewable energy sources to supplement energy consumption of sports facilities has been attempted in various ways. However, operating a sports facility solely with renewable energy embeds some barriers as renewable energy sources are influenced by external environmental factors. Sports facility is especially sensitive to stable energy supply because sporting events might have to be suspended and cause the audience in a dangerous situation when energy is insufficiently supplied. This study analyzes a renewable energy hybrid system for the Munhak Stadium in Incheon, Korea. The current hybrid system with photovoltaic (PV) panels will be analyzed firstthen, another set of simulations will be performed under conditions in which additional PV panels are installed. The current and future hybrid systems for Munhak Stadium’s future can be analyzed for optimal performance by conducting this series of simulations.한국과학기술원 :기술경영전문대학원

APPARATUS AND METHOD FOR OBTAINING HIGH RESOLUTION IMAGE

고해상도 영상 획득 장치 및 그 방법이 제공된다. 고해상도 영상 획득 장치는 입력 영상 프레임을 배경 영역과 전경 영역으로 구분하고, 각각의 영역에 최적화된 해상도 향상 알고리즘을 적용함으로써, 효과적으로 입력 영상 프레임에 대한 고해상도 영상 프레임을 획득할 수 있다. 고해상도 영상, 리컨스트럭션 기반 해상도 향상, 예제 기반 해상도 향상, 웨이블릿 변환, 움직임 정

고해상도 가시광 영상 정보를 이용한 적외선 영상의 해상도 향상 기법

학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 2013.8, [ vii, 81 p. ]Infrared (IR) images provide valuable information for many applications such as surveillance and remote sensing. However, compared to a visible image, the quality of an IR image is usually poor and its spatial resolution is limited. The main reason for the quality and resolution degradation of an IR image is blurring effects due to non-ideal optics and finite detector size. Therefore, improving the quality and/or the spatial resolution of IR images is an important issue. This dissertation deals with a resolution improvement algorithm of an IR image. To improve the quality and resolution of an IR image, conventional restoration-based algorithms model an IR image acquisition process mathematically and solve an inverse problem. Therefore, the quality of the restored image relies on the modeling accuracy of the degradation process that is usually difficult to achieve. In addition, some high-frequency (HF) components cannot be recovered and ringing artifacts near strong edges become noticeable even with the use of a constraint term in the restoration process. Meanwhile, in some applications such as medical and range imaging, to improve an image captured from a sensor, an image obtained from a different sensor is also utilized by examining their statistical relationships between intensity values or the co-occurrence of discontinuities. This dissertation presents a new IR image resolution improvement framework based on the information of the aligned high-resolution visible image. In the proposed framework, we first estimate HF patches for edge regions in an IR image, which have a strong correlation with the aligned edges in the visible image. The estimation is performed on the basis of local intensity correlations between two images. By utilizing the relationship between the IR patches for correlated edges and their estimated HF patches, we then determine multiple HF patch candidates for uncorrelated edges. Finally, we suggest an optimization procedure to improve re...한국과학기술원 : 전기및전자공학과