Sung-Wook Jeong
Yonsei University · 情報科学
研究室紹介
Professor Sung-Wook Jeong's research lab specializes in high-performance computing, embedded systems, and environmental data analysis. The lab focuses on optimizing multimedia processing—particularly JPEG decoding—on heterogeneous computing architectures, leveraging CPU and GPU parallelism for mobile and embedded platforms. It also conducts interdisciplinary research on groundwater quality, integrating geochemical and isotopic analysis to assess pollution sources and hydrological dynamics in coastal and rural environments. The lab combines computer science with environmental science to address real-world challenges in resource management and system efficiency.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
9With the emergence of social networks and improvements in computational photography, billions of JPEG images are shared and viewed on a daily basis. Desktops, tablets and smartphones constitute the vast majority of hardware platforms used for displaying JPEG images. Despite the fact that these platforms are heterogeneous multicores, no approach exists yet that is capable of joining forces of a system's CPU and GPU for JPEG decoding.
In this paper, we propose a task-parallel programming extension for the JPEG decoder of the libjpeg-turbo library. Efficient JPEG decoding is especially important for resourceconstrained mobile devices such as smartphones, where decoding (e.g., browsing of web pages containing images, image search aso) is far more common than image encoding. The aim of our work is to utilize multiple CPU cores for JPEG decompression from a single client thread. Our method is orthogonal to libjpeg-turbo'
이 연구는 제주도 한림읍 일대의 지하수 수질과 오염 특성의 시간적·공간적 변화를 규명하고자 수행되었다. 현장조사와 실내분석은 2002년 8월(우기), 11월과 2003년 4월(건기)에 시행되었으며, 안정 동위원소 조성의 계절적인 변화를 관찰하기 위해 2003년 8월 추가 조사가 실시되었다. 지하수의 수질 유형은 (Na+K, Mg)-HCO3가 주를 이루며, 저지대로 내려올수록 Cl과 Mg의 영향이 상대적으로 증가하였다. 해수침투의 영향은 S.M.I. 지수를 이용한 결과 거의 관찰되지 않았다. 하지만, 농촌지역의 대표적 오염특성인 질산성 질소의 오염이 심각하게 나타났으며, 고도 100 m 내외에서 급증하는 특성을 보인다. 특히, 집중 강수가 있었던 8월에는 이러한 현상이 심화되었다. 질소 동위원소를 이용한 오염원 추정 결과, 대부분 화학비료의 영향으로 나타났으며, 이는 토지 이용 특성과 일치한다. 강수의 안정 동위원소 조성은 '우량효과'를 반영하였으며, 지하수 시료들의 경우 함양에서 배
Summary With the emergence of social networks and improvements in computational photography, billions of JPEG images are shared and viewed on a daily basis. Desktops, tablets, and smartphones constitute the vast majority of hardware platforms used for displaying JPEG images. Despite the fact that these platforms are heterogeneous multicores, no approach exists yet that is capable of joining forces of a system's CPU and graphics processing unit (GPU) for JPEG decoding. In this paper, we introduce
With the emergence of social networks and improvements in computational photography, billions of JPEG images are shared and viewed on a daily basis. Desktops, tablets and smartphones constitute the vast majority of hardware platforms used for displaying JPEG images. Despite the fact that these platforms are heterogeneous multicores, no approach exists yet that is capable of joining forces of a system's CPU and GPU for JPEG decoding.
Semiconductor industry is the one whose supply chain network is distributed all over the world. And it has different characteristics with other manufacturing industries as reentrancy, binning, substitution. In this paper, we suggest supply chain models for the semiconductor industry, consisting of production and distribution chains, where manufacturing characteristics are considered. Three policies for the production chain and two policies for the distribution chain are suggested and formulated
열전 변환 에너지 하베스팅을 위한 저 전력 부스트 컨버터에 사용하는 새로운 Zero Current Sensor (ZCS)를 이 논문에서 제안한다.새로 제안하는 ZCS를 사용하는 Zero Current Switching은 기존 방식인 아날로그 비교기를 사용한 Zero Current Switching방식 보다 파워 측면에서 큰 장점을 보이고 기존의 다른 방식인 딜레이 라인을 이용하는 Zero Current Switching 방식보다 면적에서 큰 장점을 보인다. 새로운 ZCS는 기존의 아날로그 비교기에 고의적으로 offset을 발생시키고 offset의 양을 digital code로 calibration 하여 출력이 나오는 시간을 조절한다. 새로운 ZCS를 이용한 Zero Current Switching은 기존의 아날로그 비교기를 이용한 Zero Current Switching 보다 대략 10배정도 적은 파워를 사용하면서 같은 성능을 보인다.
With the emergence of social networks and improvements in computational\nphotography, billions of JPEG images are shared and viewed on a daily basis.\nDesktops, tablets and smartphones constitute the vast majority of hardware\nplatforms used for displaying JPEG images. Despite the fact that these\nplatforms are heterogeneous multicores, no approach exists yet that is capable\nof joining forces of a system's CPU and GPU for JPEG decoding. In this paper we\nintroduce a novel JPEG decoding scheme f
Replica bit-line technique is used for making enable signal of sense amplifier which accurately tracks bit-line of SRAM. However, threshold voltage variation in the replica bit-line circuit changes the cell current, which results in variation of the sense amplifier enable time, TSAE. The variation of TSAE makes the sensing operation unstable. In this paper, in addition to conventional replica bit-line delay (RBLconv), dual replica bit-line delay (DRBD) and multi-stage dual replica bit-line delay
Research Areas
Sung-Wook Jeongの研究をNubintでさらに深く
この研究室の論文をアプリで開き、AIと共に読み、要約し、引用しましょう。