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Variation in Summer Surface Air Temperature over Northeast Asia and Its Associated Circulation Anomalies

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Advances in Atmospheric Sciences 2016年第1期33卷 1-9页

作者： Wei CHEN Xiaowei hong Riyu LU Aifen jin Shizhu jin Jae-Cheol NAM jin-Ho SHIN Tae-Young GOO Baek-Jo kim State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 University of Chinese Academy of Sciences Beijing 100049 Department of Geography Yanbian University Yanji 133002 National Institute of Meteorological Research Korea Meteorological Administration deju Korea

This study investigates the interannual variation of summer surface air temperature over Northeast Asia（NEA） and its associated circulation *** leading modes for the temperature variability over NEA are obtained by EOF *** first EOF mode is characterized by a homogeneous temperature anomaly over NEA and therefore is called the NEA *** anomaly extends from southeast of Lake Baikal to Japan,with a central area in Northeast *** second EOF mode is characterized by a seesaw pattern,showing a contrasting distribution between East Asia（specifically including the Changbai Mountains in Northeast China,Korea,and Japan） and north of this *** mode is named the East Asia（EA） *** modes contribute equivalently to the temperature variability in *** two leading modes are associated with different circulation anomalies.A warm NEA mode is associated with a positive geopotential height anomaly over NEA and thus a weakened upper-tropospheric westerly *** the other hand,a warm EA mode is related to a positive height anomaly over EA and a northward displaced *** addition,the NEA mode tends to be related to the Eurasian teleconnection pattern,while the EA mode is associated with the East Asia-Pacific/PacificJapan pattern.

关键词： surface air temperature Northeast Asia East Asia circulation anomaly interannual variability

Construction of random sheared fosmid library from Chinese cabbage and its use for Brassica rapa genome sequencing project

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Journal of Genetics and Genomics 2011年第1期38卷 47-53页

作者： Tae-Ho Park Beom-Seok Park jin-A kim Joon Ki hong Mina jin Young-Joo Seol Jeong-Hwan Mun Genomics and Functional Bio-Material Division National Academy of Agricultural ScienceRural Development Administration The Department of Horticultural Science Daegu University

As a part of the Multinational Genome Sequencing Project of Brassica rapa, linkage group R9 and R3 were sequenced using a bacterial artificial chromosome （BAC） by BAC strategy. The current physical contigs are expected to cover approximately 90% euchromatins of both chromosomes. As the project progresses, BAC selection for sequence extension becomes more limited because BAC libraries are restriction enzyme-specific. To support the project, a random sheared fosmid library was constructed. The library consists of 97536 clones with average insert size of approximately 40 kb corresponding to seven genome equivalents, assuming a Chinese cabbage genome size of 550 Mb. The library was screened with primers designed at the end of sequences of nine points of scaffold gaps where BAC clones cannot be selected to extend the physical contigs. The selected positive clones were end-sequenced to check the overlap between the fosmid clones and the adjacent BAC clones. Nine fosmid clones were selected and fully sequenced. The sequences revealed two completed gap filling and seven sequence extensions, which can be used for further selection of BAC clones confirming that the fosmid library will facilitate the sequence completion of B. rapa.

关键词： Brassica rapa Chinese cabbage Fosmid library Genome sequencing Physical contig

Physical Experiments to Investigate the Effects of Street Bottom Heating and Inflow Turbulence on Urban Street-Canyon Flow

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Advances in Atmospheric Sciences 2005年第2期22卷 230-237页

作者： Jae-jin kim Jong-jin BAIK Climate Environment System Research Center Seoul National University Seoul 151-742 KoreaSchool of Earth and Environmental Sciences Seoul National University Seoul 151-742 Korea

The effects of street bottom heating and inflow turbulence on urbanstreet-canyon flow are experimentally investigated using a circulating water channel. Threeexperiments are carried out for a street canyon with a street aspect ratio of 1. Results from eachexperiment with bottom heating or inflow turbulence are compared with those without bottom heatingand appreciable inflow turbulence. It is demonstrated that street bottom heating or inflowturbulence increases the intensity of the canyon vortex. A possible explanation on how street bottomheating or inflow turbulence intensifies the canyon vortex is given from a fluid dynamicalviewpoint.

关键词： urban street-canyon flow street bottom heating inflow turbulence circulating water channel

Preoperative risk factors for early recurrence in patients with resectable pancreatic ductal adenocarcinoma after curative intent surgical resection

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Hepatobiliary & Pancreatic Diseases International 2018年第5期17卷 450-455页

作者： Nam Hee kim hong Joo kim Division of Gastroenterology Department of Internal Medicine Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine

Background: Postoperative early recurrence(ER) in patients with pancreatic ductal adenocarcinoma(PDAC) is frequently encountered after curative intent surgery. Nonetheless, clinical significance and risk factors of ER after surgery for PDAC have not been extensively investigated. The aim of this study was to determine preoperative risk predictors for ER in patients with PDAC after upfront surgery. Methods: Eighty-one consecutive patients with PDAC who underwent curative intent surgical resection at Kangbuk Samsung Hospital between January 2004 and May 2015 were enrolled. ER was defined as tumor relapse within 6 months after surgery. Results: ER occurred in 26 patients(32.1%), whereas 49 patients(60.5%) had late recurrence( ≥ 6 months after surgery), and 6 patients had no recurrence(7.4%). Univariate analysis showed that C-reactive protein(CRP) > 3.0 mg/dL, modified Glasgow prognostic score(mGPS) = 2, decrease of total lymphocyte count by > 50% of baseline value in the preoperative period, prognostic nutritional index(PNI) 3.0 mg/dL, decrease of total lymphocyte count by > 50% of baseline value, and preoperative SUVmax were significant and independent contributors of ER in patients with resectable PDAC who underwent curative intent surgery. Conclusions: Postoperative ER for resectable PDAC was frequent with poor prognosis after curative intent upfront surgery. It is reasonable to suggest that there is a subgroup of resectable PDAC patients at highrisk of ER and neoadjuvant therapy should be considered in these patients in a clinical trial setting.

关键词： Early recurrence Pancreatic ductal adenocarcinoma Preoperative risk factors C-reactive protein Maximum standardized uptake value

High-frequency supercapacitors with phosphorus-doped Ketjen black

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Journal of Energy Chemistry 2023年第7期82卷 464-474,I0010页

作者： Qing jin Mahima Khandelwal Woong kim Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea

Compact supercapacitors(SCs)have attracted attention for their great potential to replace bulky aluminum electrolytic capacitors(AECs)in alternating current(AC)line filtering ***,the fabrication of a high-frequency SC is reported using Ketjen black(KB)nanoparticles doped with phosphorus(P)to achieve a high areal capacitance of up to 2.26 mF cm^(-2)along with a high-rate capability,with a phase angle of-80.2°at 120 *** high performance of the phosphorus-doped KB(designated PKB)SC with a 6 M KOH aqueous electrolyte is associated with its increased surface wettability and additional capacitive sites provided by the *** functional theory(DFT)calculations further indicate that the P-doping enhances the interactions between the electrolyte ions and the carbon surface,thus leading to an improved electrochemical *** results suggest that the P-doped carbonbased SC could be highly favored in replacing conventional AECs in various high-frequency electronic devices.

关键词： Phosphorus doping Frequency response Wettability Supercapacitor AC line filtering DFT calculation

Effect of reduction in area per pass on strain distribution and microstructure during caliber rolling in twinning-induced plasticity steel

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Journal of Iron and Steel Research International 2020年第1期27卷 62-74页

作者： Joong-ki Hwang Sung jin kim School of Mechanical Engineering Tongmyong UniversityBusan 48520Republic of Korea Department of Advanced Materials Engineering Sunchon National UniversitySuncheon 57922Republic of Korea

The effects of reduction in area(RA)per pass during caliber rolling on microstructure and strain distribution of twinninginduced plasticity steel have been investigated to find solutions to make a more homogeneous material along the radial direction for wire rod *** steel wires subjected to an average RA per pass of 2.5%(skin pass caliber rolling)and 10.0%(conventional caliber rolling)were *** skin pass caliber-rolled wire was characterized as a duplex fiber texture of majorand minor.and the textures were almost same at/between center and surface area,which is totally different from those of conventional caliber rolling and wire *** skin pass caliber rolling led to more homogeneous microstructure and mechanical properties along the radial direction in comparison with the conventional caliber rolling and wire drawing due to the more homogeneous Hall-Petch hardening,dislocation hardening,and texture behavior with area,resulting in higher formability.

关键词： Twinning-induced plasticity steel Caliber rolling Deformation twin Reduction in area Skin pass

Secure e-Prescription Management System:Mitigating Blended Threat in IoBE

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Computer Systems Science & Engineering 2023年第3期44卷 2501-2519页

作者： Deukhun kim Heejin kim jin Kwak ISAA Lab. Institute for Information and CommunicationAjou UniversitySuwon16499Korea Korea Orphan&Essential Drug Center(KOEDC) Seoul04523Korea Department of Cyber Security Ajou UniversitySuwon16499Korea

New information and communication technologies(ICT)are being applied in various industries to upgrade the value of the major service ***,data collection,storage,processing,and security applications have led to the creation of an interrelated ICT environment in which one industry can directly influence the *** is called the“internet of blended environ-ments”(IoBE),as it is an interrelated data environment based on internet-of-things collection *** this environment,security incidents may increase as size and interconnectivity of attackable operations ***,pre-emptive responses to combined security threats are needed to securely utilize IoBE across *** example,the medical industry has more stringent information protection measures than other ***,it has become a major target of attackers,as more clinician–patient interactions occur over the internet owing to ***,this study aims to acquire security for IoBE while focusing on the medical *** the various types of medical ICT services,this study analyzes dataflow and potential security threats from the e-prescription lifecycle perspective,which is highly utilized,strongly data-centric,and has numerous security *** on our analysis,we propose a secure authentication and data-sharing scheme.

关键词： Authentication scheme blended threat e-prescription internet of blended environments

Environmental Sound Event Detection in Wireless Acoustic Sensor Networks for Home Telemonitoring

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China Communications 2017年第9期14卷 1-10页

作者： Hyoung-Gook kim jin Young kim The Dept. of Electronics Convergence Engineering Kwangwoon University The Dept. of Electronics and Computer Engineering Chonnam National University

In this paper, we present an approach to improve the accuracy of environmental sound event detection in a wireless acoustic sensor network for home monitoring. Wireless acoustic sensor nodes can capture sounds in the home and simultaneously deliver them to a sink node for sound event detection. The proposed approach is mainly composed of three modules, including signal estimation, reliable sensor channel selection, and sound event detection. During signal estimation, lost packets are recovered to improve the signal quality. Next, reliable channels are selected using a multi-channel cross-correlation coefficient to improve the computational efficiency for distant sound event detection without sacrificing performance. Finally, the signals of the selected two channels are used for environmental sound event detection based on bidirectional gated recurrent neural networks using two-channel audio features. Experiments show that the proposed approach achieves superior performances compared to the baseline.

关键词： sound event detection wirelesssensor network gated recurrent neural net-work multichannel audio

Effects of a Building’s Density on Flow in Urban Areas

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Advances in Atmospheric Sciences 2009年第1期26卷 45-56页

作者： Jae-jin kim Do-Yong kim Department of Environmental Atmospheric Sciences Pukyong National University Busan Korea Center for Atmosphere Science and Earthquake Research Korea Meteorological Administration Busan Korea

The effects of a building＇s density on urban flows are investigated using a CFD model with the RNG k - ε turbulence closure scheme. Twenty-seven cases with different building＇s density parameters （e.g., building and street-canyon aspect ratios） are numerically simulated. As the building＇s density parameters vary, different flow regimes appear. When the street canyon is relatively narrow and high, two counterrotating vortices in the vertical direction are generated. The wind speed along streets is mainly affected by the building＇s length. However, it is very difficult to find or generalize the characteristics of the street-canyon flows in terms of a single building＇s density parameter. This is because the complicated flow patterns appear due to the variation of the vortex structure and vortex number. Volume-averaged vorticity magnitude is a very good indicator to reflect the flow characteristics despite the strong dependency of flows on the variation of the building＇s density parameters. Multi-linear regression shows that the volume-averaged vorticity magnitude is a strong function of the building＇s length and the street-canyon width. The increase in the building＇s length decreases the vorticity of the street-canyon flow, while, the increase in the street- canyon width increases the vorticity.

关键词： urban flow characteristics building's density parameter volume-averaged vorticity CFD model