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아날로그 비터비 디코더에 있어서 기생 cap성분 최소화 layout 설계에 의한 신호전파 지연 개선
김인철(Incheol Kim),김현정(Hyunjung Kim),김형석(Hyongsuk Kim) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
A circuit design technique ttl reduce the propagation time is proposed for the analog parallel processing-based Viterbi decoder. The analog Viterbi decoder implements the function of the conventional digital Viterbi decoder utilizing the analog parallel processing circuit technology. The decoder is fur the PR(1.2,2.1) signal of DVD. The benefits arc low power consumption ami less silicon occupation. In this paper, a propagation time reduction technique is proposed by minimizing the parasitic capacitance components in the layout design of the analog Viterbi decoder. The propagation time reduction effect of the proposed technique has been shown via HSPICE simulation.
Im Joo-Young,Kim Soo Jin,Park Jong-Lyul,Han Tae-Hee,Kim Woo-il,Kim Inhyub,Ko Bomin,Chun So-Young,Kang Mi-Jung,Kim Bo-Kyung,Jeon Sol A.,Kim Seon-Kyu,Ryu Incheol,Kim Seon-Young,Nam Ki-Hoan,Hwang Inah,Ba 생화학분자생물학회 2024 Experimental and molecular medicine Vol.56 No.-
Cytochrome b5 reductase 3 (CYB5R3) is involved in various cellular metabolic processes, including fatty acid synthesis and drug metabolism. However, the role of CYB5R3 in cancer development remains poorly understood. Here, we show that CYB5R3 expression is downregulated in human lung cancer cell lines and tissues. Adenoviral overexpression of CYB5R3 suppresses lung cancer cell growth in vitro and in vivo. However, CYB5R3 deficiency promotes tumorigenesis and metastasis in mouse models. Transcriptome analysis revealed that apoptosis- and endoplasmic reticulum (ER) stress-related genes are upregulated in CYB5R3-overexpressing lung cancer cells. Metabolomic analysis revealed that CYB5R3 overexpression increased the production of nicotinamide adenine dinucleotide (NAD+) and oxidized glutathione (GSSG). Ectopic CYB5R3 is mainly localized in the ER, where CYB5R3-dependent ER stress signaling is induced via activation of protein kinase RNA-like ER kinase (PERK) and inositol-requiring enzyme 1 alpha (IRE1α). Moreover, NAD+ activates poly (ADP-ribose) polymerase16 (PARP16), an ER-resident protein, to promote ADP-ribosylation of PERK and IRE1α and induce ER stress. In addition, CYB5R3 induces the generation of reactive oxygen species and caspase-9-dependent intrinsic cell death. Our findings highlight the importance of CYB5R3 as a tumor suppressor for the development of CYB5R3-based therapeutics for lung cancer.
Proline-Rich Transcript in Brain Protein Induces Stress Granule Formation
Kim, Jung-Eun,Ryu, Incheol,Kim, Woo Jae,Song, Ok-Kyu,Ryu, Jeongeun,Kwon, Mi Yi,Kim, Joon Hyun,Jang, Sung Key American Society for Microbiology 2008 Molecular and cellular biology Vol.28 No.2
<B>ABSTRACT</B><P>The repression of translation in environmentally stressed eukaryotic cells causes the sequestration of translation initiation factors and the 40S ribosomal subunit into discrete cytoplasmic foci called stress granules (SGs). Most components of the preinitiation complex, such as eIF3, eIF4A, eIF4E, eIF4G, and poly(A)-binding protein, congregate into SGs under stress conditions. However, the molecular basis of translation factor sequestration into SGs has not been clearly elucidated. Here, we report that proline-rich transcript in brain (PRTB) protein interacts with eIF4G and participates in SG formation. PRTB was recruited to SG under sodium arsenite and heat stress conditions. When overexpressed, PRTB inhibited global translation and formed SGs containing TIA-1, eIF4G, and eIF3. Knockdown of PRTB reduced the SG formation induced by sodium arsenite. These results suggest that PRTB not only is a component of SG formed by cellular stresses but also plays an important role in SG formation via an interaction with the scaffold protein eIF4G, which is associated with many translation factors and mRNAs.</P>
Assessment of load sharing behavior for micropiled rafts installed with inclined condition
Kim, Dongho,Kim, Garam,Kim, Incheol,Lee, Junhwan Elsevier 2018 ENGINEERING STRUCTURES Vol.172 No.-
<P><B>Abstract</B></P> <P>As a combined foundation, micropiled rafts under compressive loads show the load-sharing behavior between raft and micropiles. The load carrying and sharing behaviors of micropiled rafts installed with inclined condition would become further complicated as a result of the coupled influences of group and inclined configurations. In this study, the 3D finite element analyses were performed to investigate the load carrying and sharing behaviors of inclined micropiled rafts. Changes in foundation configurations, including micropile inclination angle and spacing, were considered in the analyses. The load carrying capacity of micropiled rafts varied with the inclination angle of micropiles and the proportion of load carried by inclined micropiles was larger than for vertically installed condition. The values of the load sharing ratio α<SUB>p</SUB> for the inclined condition were obtained and analyzed. The normalized load-sharing model for inclined micropiled rafts was proposed with the modified load capacity interaction factor and design equations as a function of micropile configuration and inclination angle. Case studies were selected from the literature and adopted to compare with the calculated results using the proposed method. The calculated results were in reasonable agreement with measured load sharing ratios.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The load carrying behaviors of inclined micropiled rafts were investigated. </LI> <LI> Changes in micropile inclination angle and spacing were considered. </LI> <LI> The values of the load sharing ratio for the inclined condition were obtained. </LI> <LI> The normalized load sharing model for inclined micropiled rafts was proposed. </LI> </UL> </P>
디지털 증거물의 법적능력 확보를 위한 정보감사용 e-Forensic 툴 연구
Kim, Seungyong,Kim, Gyeongyong,Hwang, Incheol,Kim, Dongsik 한국재난정보학회 2017 한국재난정보학회 논문집 Vol.13 No.2
본 연구는 재해현장에서 발생한 다양한 형태의 디지털 증거물을 채집 분석하는데 있어 디지털 포렌식 기법에 입각하여 효율적으로 재해 현장 디지털 데이터를 채증할 수 있는 e-Forensic 툴 개발에 관한 것이다. 현장에서 채집한 다양한 디지털 증거물이 법적 증거물로 채택되기 위해서는 디지털 증거물이 위변조가 없는 원본과 동일한 상태임을 입증해야만 하는데 이를 본 e-Forensic툴을 이용하여 검증하였다. 이 툴을 활용하면, 현장 수사 중 디지털 파일을 증거로 수집하는 경우에 현장에서 바로 해시값을 생성, 암호화된 디지털 파일에 부가함으로써 디지털 파일의 원본과 사본의 동일성을 보장하고 현장 증거의 무결성을 향상시킬 수 있는 효과가 있음을 증명하였다. This research is about the development of e-forensic tool that extract & analyze different forms of digital evidence that individuals come across in a disaster scene. The tool utilizes digital forensic techniques which makes the tool efficient in any disaster analysis situation. In order for the forensic evidence to be selected as legal evidence, the evidence needs to be proven that it is in its original state with no forgery involved. This is where the e-forensic tool comes in, as its ability to collect digital evidence during investigation has proven; that the tool can keep the evidence in its original state and increase the integrity by generating hash TAG and adding the forensic evidence to a password encoded file.
Kim Doyeub,Jeong Incheol,Kim Kyeong Joon,Bae Kyung Taek,Kim Dongyeon,구종언,Yu Hyeongmin,Lee Kang Taek 한국세라믹학회 2022 한국세라믹학회지 Vol.59 No.2
Solid oxide fuel cells (SOFCs), which are widely viewed as the next-generation energy conversion devices, provide envi- ronmentally friendly power generation by direct conversion of chemical energy with high effi ciency and less pollutant emissions. However, their high operating temperatures limit their usability in applications, such as distributed generation of electricity and heat, power plants, and transportation. At reduced temperatures, the electrolytes and electrodes used in SOFCs experience sluggish oxygen transport kinetics. Therefore, the development of materials with high oxygen ion conduction and unique cell designs is needed to achieve higher performance. This article provides an overview of the recent progress on solid oxide electrolyte materials, unique cell designs featuring bilayer electrolytes, and resulting microstructures at lower operating temperatures.