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NOAA/AVHRR sea surface temperature accuracy in the East/Japan Sea

International Journal of Digital Earth 2015年第10期8卷 784-804页

作者： Kyung-Ae Park Eun-Young Lee Xiaofeng Li sung-rae chung Eun-Ha Sohn sungwook Hong Department of Earth Science Education/Research Institute of Oceanography Seoul National UniversitySeoulSouth Korea Department of Science Education Seoul National UniversitySeoulSouth Korea GST at National Environmental Satellite Dataand Information ServiceNational Oceanic and Atmospheric AdministrationCollege ParkMDUSA Satellite Planning Division National Meteorological Satellite CenterKorea Meteorological AdministrationJincheonSouth Korea Satellite Analysis Division National Meteorological Satellite CenterKorea Meteorological AdministrationJincheonSouth Korea

Sea surface temperature(SST)retrieved from Advanced Very High Resolution Radiometer(AVHRR)onboard National Oceanic and Atmospheric Administration(NOAA)polar orbiting environmental satellites were validated in the East/Japan Sea(EJS)using surface drifter measurements as ground truths from 2005 to ***,the root-mean-square(rms)errors of multichannel SSTs(MCSSTs)and non-linear SSTs(NLSSTs)using global SST coefficients were approximately 0.85℃ and 0.80℃,*** analysis of the SST errors(satellite-drifter)revealed a dependence on the amount of atmospheric *** addition,satellite-derived SSTs tended to be related to wind speeds,particularly during the *** SST errors also demonstrated diurnal variations with relatively higher rms from 0.80℃ to 1.00℃ during the night than the day,with a small rms of about 0.50℃.Bias also exhibited reasonable diurnal differences,showing small biases during the *** a satellite zenith angle has been considered in the global SST coefficients,its effect on the SST errors still remained in case of the *** the diverse use of SST data,the continuous validation and understanding of the characteristic errors of satellite SSTs should be conducted based on extensive in-situ temperature measurements in the global ocean as well as local seas.

关键词： sea surface temperature East/Japan Sea AVHRR SST error validation

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Exploiting fly models to investigate rare human neurological disorders

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Neural Regeneration Research 2025年第1期20卷 21-28页

作者： Tomomi Tanaka Hyung-Lok chung Department of Neurology Houston Methodist Research InstituteHoustonTXUSA Department of Neurology Weill Cornell Medical CollegeNew YorkNYUSA

Rare neurological diseases,while individually are rare,collectively impact millions globally,leading to diverse and often severe neurological *** attributed to genetic mutations that disrupt protein function or structure,understanding their genetic basis is crucial for accurate diagnosis and targeted *** investigate the underlying pathogenesis of these conditions,researchers often use non-mammalian model organisms,such as Drosophila(fruit flies),which is valued for their genetic manipulability,cost-efficiency,and preservation of genes and biological functions across evolutionary *** tools available in Drosophila,including CRISPR-Cas9,offer a means to manipulate gene expression,allowing for a deep exploration of the genetic underpinnings of rare neurological *** boasts a versatile genetic toolkit,rapid generation turnover,and ease of large-scale experimentation,making it an invaluable resource for identifying potential drug *** can expose flies carrying disease-associated mutations to various compounds,rapidly pinpointing promising therapeutic agents for further investigation in mammalian models and,ultimately,clinical *** this comprehensive review,we explore rare neurological diseases where fly research has significantly contributed to our understanding of their genetic basis,pathophysiology,and potential therapeutic *** discuss rare diseases associated with both neuron-expressed and glial-expressed *** cases include mutations in CDK19 resulting in epilepsy and developmental delay,mutations in TIAM1 leading to a neurodevelopmental disorder with seizures and language delay,and mutations in IRF2BPL causing seizures,a neurodevelopmental disorder with regression,loss of speech,and abnormal *** we explore mutations in EMC1 related to cerebellar atrophy,visual impairment,psychomotor retardation,and gain-of-function mutations in ACOX1 causing Mitchell ***-of-fun

关键词： ACOX1 Drosophila melanogaster glia lipid metabolism model organisms neuroinflammation neurologic disorders neuron rare disease VLCFA

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Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea

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Chinese Journal of Oceanology and Limnology 2017年第4期35卷 844-857页

作者： LEE Jee Eun chung Ik Kyo LEE Sang-rae Division of Earth Environmental System Oceanography Major Pusan National University Marine Research Institute Pusan National University

Estuaries are environments where freshwater and seawater mix and they display various salinity *** construction of river barrages and dams has rapidly changed these environments and has had a wide range of impacts on plankton *** understand the dynamics of such communities,researchers need accurate and rapid techniques for detecting plankton *** evaluated the diversity of eukaryotic plankton over a salinity gradient by applying a metagenomics tool at the Nakdong River estuary in *** samples were collected on three dates during summer and autumn of 2011 at the Eulsukdo Bridge at the mouth of that *** the 18 S rDNA allowed us to analyze 456 clones and 122 *** sequences revealed various taxonomic groups and cryptic genetic variations at the intra-and inter-specific *** analyzing the same station at each sampling date,we observed that the phylotypes presented a salinity-related pattern of diversity in *** variety of species within freshwater samples reflected the rapid environmental changes caused by freshwater *** phylotypes accounted for the highest proportion of overall diversity in the seawater *** diatoms and dinoflagellates were observed in the freshwater,brackish and seawater *** biological data for species composition demonstrate the transitional state between freshwater and ***,this metagenomics information can serve as a biological indicator for tracking changes in aquatic environments.

关键词： 18S rDNA clone library metagenome estuary salinity gradient

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UV-assisted flash light welding process to fabricate silver nanowire/graphene on a PET substrate for transparent electrodes

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Nano Research 2018年第4期11卷 2190-2203页

作者： Wan-Ho chung sung-Hyeon Park sung-Jun Joo Hak-sung Kim Department of Mechanical Engineering Hanyang University 17 Haendang-Dong Seongdong-Gu Seoul 133-791 Republic of Korea Institute of Nano Science and Technology Hanyang University Seou1133-791 Republic of Korea

Graphene oxide and silver nanowires were bar coated onto polyethylene terephthalate （PET） substrates and then welded using an ultraviolet （UV）-assisted flash light irradiation process to achieve both high electrical conductivity and low haze. The irradiation process connected adjacent silver nanowires by welding, while simultaneously reducing the graphene oxide to graphene. This process was performed using a custom W-assisted flash light welding system at room temperature under ambient conditions and was extremely rapid, with processing time of several milliseconds. The effects of varying the weight fractions of the silver nanowires and graphene oxide and of varying the W-assisted flash light welding conditions （light energy and pulse duration） were investigated. The surface morphologies of the welded silver nanowire/graphene films were analyzed using scanning electron microscopy. Optical characterizations, including transmittance and haze measurements, were also conducted using a spectrophotometer. To test their resistance to oxidation, the welded silver nanowire/graphene films were subjected to high temperature in a furnace （100 ℃）, and their sheet resistances were measured every hour. The flash light welding process was found to yield silver nanowire/graphene films with high oxidation resistance, high conductivity （14.35 Ω·sq-1）, high transmittance （93.46%）, and low haze （0.9%）. This material showed uniform temperature distribution when applied as a resistive heating film.

关键词： silver nanowires graphene oxide transparent electrode flash light welding printed electronics

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Carcinoma of Colon: A Rare Cause of Fever of Unknown Origin

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Chinese Journal of Cancer Research 2012年第2期24卷 157-160页

作者： Wei Dai Kyu-sung chung Department of Gastroenterology the First Affiliated Hospital of Kunming Medical CollegeKunming 650032China Department of Gastroenterology the Affiliated YanAn Hospital of Kunming Medical CollegeKunming 650051China

Fever of unknown origin （FUO） was originally defined as a body temperature greater than 38.3℃ on several occasions longer than 3 weeks, with a diagnosis that remains unclear after 7 days of obligatory investigation. Only a few types of solid tumors have been associated with FUO. We described 2 patients who had recurrent fever but no other specific gastrointestinal symptoms where carcinoma of the colon was the only identifiable cause. In the first case, a mass arising from the sigmoid colon was found without any nodal metastasis, and the fever was resolved after three days of the surgical resection. In the second case, advanced adenocarcinoma was found in the ascending colon together with liver cirrhosis. Although it was not possible to surgically remove this tumor, prolonged fever in the patient was most likely due to the carcinoma. These cases indicate that clinicians should consider carcinoma of the colon in the differential diagnosis of patients with FUO.

关键词： Colon Carcinoma Fever FUO

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A GIS-Based Framework for Real-Time Debris-Flow Hazard Assessment for Expressways in Korea

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International Journal of Disaster Risk Science 2016年第3期7卷 293-311页

作者： Han-Saem Kim Choong-Ki chung Sang-rae Kim Kyung-Suk Kim Earthquake Research Center Korea Institute of Geoscience and Mineral Resources Department of Civil and Environmental Engineering Seoul National University Department of Civil and Environmental Engineering Northwestern University Expressway and Transportation Research Institute Korea Expressway Corporation

Debris flows caused by heavy rainfall in mountain areas near expressways lead to severe social and economic losses and sometimes result in ***, the development of a real-time system for debris-flow hazard assessment is necessary to provide preliminary information for rapid decision making about evacuations or restoration measures, as well as to prevent secondary disasters caused by debris flows. Recently,various map-based approaches have been proposed using multi-attribute criteria and assessment methods for debrisflow susceptibilities. For the macrozonation of debris-flow hazard at a national scale, a simplified method such as the Korea Expressway Corporation(KEC) debris-flow hazard assessment method can be applied for systematic analysis based on geographic information systems(GIS) and monitoring networks. In this study, a GIS-based framework of real-time debris-flow hazard assessment for expressway sections is proposed based on the KEC debris-flow hazard assessment method. First, the KEC-based method was standardized in a systematic fashion using Arc GIS,enabling the objective and quantitative acquisition of various attribute datasets. The quantification of rainfall criteria also was considered. A safety management system for debris-flow hazard was developed based on the GIS platform. Finally, the method was applied and verified on three expressway sections in Korea. The grading standard for each individual influencing attribute was subsequently modified to more accurately assess the debris-flow hazards.

关键词： Debris-flow hazard Expressway management GIS Korea Real-time hazard assessment

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A fast and simple system performance emulator for enhanced solid state disks:a case study of long read operations

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第6期11卷 418-424页

作者： Do Yeun KIM Chanik PARK Eui-Young chung sung Woo chung Division of Computer and Communication Engineering Korea University Seoul 13-713 Korea Samsung Electronics Yongin-City Kyunggi-Do 446-701 Korea School of Electrical and Electronic Engineering Yonsei University Seoul 120-749 Korea

In this paper, we propose a fast and simple system emulator, called a system performance emulator(SPE), to evaluate long read *** SPE estimates how much system-wide performance is enhanced by using a faster solid state disk(SSD).By suspending a CPU for a certain time during direct memory access(DMA) transfer and subtracting this suspended time from the total DMA time, the SPE estimates the improvement in system performance expected from an enhanced SSD prior to its *** also examine the relation between storage performance and system performance using the SPE.

关键词： Solid state disk(SSD) Performance emulator System performance Direct memory access(DMA) Operating system

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A Power-Aware Branch Predictor by Accessing the BTB Selectively

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Journal of Computer Science & Technology 2005年第5期20卷 607-614页

作者： Cheol Hong Kim sung Woo chung Chu Shik Jhon Mobile System Laboratory Department of Electrical Engineering and Computer Science Seoul National University Seoul 151-742 Korea Department of Computer Science University of Virginia Charlottesville Virginia 22904 U.S.A.

Microarchitects should consider power consumption, together with accuracy, when designing a branch predictor, especially in embedded processors. This paper proposes a power-aware branch predictor, which is based on the gshare predictor, by accessing the BTB （Branch Target Buffer） selectively. To enable the selective access to the BTB, the PHT （Pattern History Table） in the proposed branch predictor is accessed one cycle earlier than the traditional PHT if the program is executed sequentially without branch instructions. As a side effect, two predictions from the PHT are obtained through one access to the PHT, resulting in more power savings. In the proposed branch predictor, if the previous instruction was not a branch and the prediction from the PHT is untaken, the BTB is not accessed to reduce power consumption. If the previous instruction was a branch, the BTB is always accessed, regardless of the prediction from the PHT, to prevent the additional delay/accuracy decrease. The proposed branch predictor reduces the power consumption with little hardware overhead, not incurring additional delay and never harming prediction accuracy. The simulation results show that the proposed branch predictor reduces the power consumption by 29-47%.

关键词： branch predictor BTB embedded processor low power design PHT

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Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua Wang chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing Cheng Yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

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Analysis of demographic characteristics in 3242 young age gastric cancer patients in Korea

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World Journal of Gastroenterology 2010年第2期16卷 256-263页

作者： Hye Won chung sung Hoon Noh Jong-Baeck Lim Department of Gastroenterology Yonsei University College of Medicine134 Shinchon-dongSeodaemun-gu120-752 SeoulSouth Korea Department of Surgery Yonsei University College of Medicine134 Shinchon-dongSeodaemun-gu120-752 SeoulSouth Korea Department of Laboratory Medicine Yonsei University College of Medicine134 Shinchon-dong Seodaemun-gu120-752 SeoulSouth Korea

AIM:To evaluate the epidemiologic features of young age gastric cancer(GC). METHODS:Retrospectively,a total of 3242 patients with GC between 18 and 45 years of age and 3000 sex-and age-matched controls were *** subjects were stratified into 3 groups based on age (A,18-30 years;B,31-40 years;C,41-45 years). Epidemiologic characteristics and risk factors were investigated with reference to their age and gender. RESULTS:Compared to controls,more frequent intake of high risk diet(P=0.00075),history of heavy smoking(P=0.00087),intake of heavy alcohol(P= 0.00091),lower social economic status(P=0.00083), body mass index>30(P=0.00097),urban residence(P=0.00065),and more frequent exposure to harmful occupational environments(P=0.00072)were observed in all age groups and both genders in young age *** relationships were weaker in females compared to males of the same age,and were stronger as the age of patients ***,in group C of young age GC patients,environmental factors played important roles in females and males with a similar body *** females,older age at first delivery(> 35 years),lack of lactation history,nulliparity,and poor nutritional status during pregnancy were significantly associated with an increased risk of GC(P=0.00034). In this study,252 patients(7.8%)had a family history of GC with high odds ratio(OR)(3.22-4.21).In particular, family history was more closely associated with GC in males(OR,4.21 in male vs 3.46 in female)and more advanced cases(P=0.00051). CONCLUSION:Hormonal associated factors were more commonly associated with females whereas environmental factors were more commonly associated with males in young age GC patients.

关键词： Young age gastric cancer Epidemiology Risk factor Age Gender

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