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Flexible PVA/BMIMOTf/LLZTO composite electrolyte with liquid-comparable ionic conductivity for solid-state lithium metal battery

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Journal of Energy Chemistry 2022年第11期31卷 128-139,I0005页

作者： Hyesun jeon Hai Anh Hoang Dukjoon Kim School of Chemical Engineering Sungkyunkwan UniversitySuwonGyeonggi 16419Republic of Korea

Poly(vinyl alcohol)(PVA)/1-butyl-3-methylimidazolium trifluoromethanesulfonate(BMIMOTf)/Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)solid-state composite electrolyte(SSCE)membranes were synthesized for solid-state lithium metal battery *** garnet-type LLZTO nanoparticles were surface-coated with the polydopamine layer of 8-10 nm thickness to enhance the dispersion status of LLZTO particles in the PVA *** hydrophilic BMIMOTf ionic liquid(IL)was added along with LLZTO nanoparticles to enhance the ionic conductivity and electrochemical stability of the SSCE *** synthesized composite electrolyte membrane containing 7 wt%of LLZTO and 60 wt%of BMIMOTf showed the outstanding Li+conductivity of 2×10^(-3)S cm^(-1)and the lithium transference number of 0.76 at room temperature in the firm and flexible solid state with the tensile strength of 8 *** a high single ion conduction characteristic led to the quite low interfacial resistance of 39Ωbetween the composite electrolyte and the lithium *** to these superior properties of composite membranes,the LiFePO_(4)|SSCE|Li cell exhibited an excellent discharge capacity of 165 mAh g^(-1)at 0.2 C,maintaining the coulombic efficiency of 98%after 100 cycles at room temperature.

关键词： Polymer-matrix composites(PMCs) Interface/interphase Surface treatments Solid-state lithium-ion batteries

Cold Signaling via the Two-Component Signaling System

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Molecular Plant 2013年第1期6卷 15-17页

作者： Jungmook Kim Jin jeon Department of Bioenergy Science and Technology Chonnam National University Buk-Gu Gwangju 500-757 Korea

Two-component signal transduction is commonly used as a stimulus-response coupling mechanism to allow organisms such as eubacteria, archea, and a few eukaryotes to sense and respond to changes in many different environmental conditions （Stock et al., 2000）. Typically, the histidine protein kinase senses extracellular stimuli by autophosphorylation and transfers a phosphoryl group to the response regu- lator, resulting in activation of downstream proteins that elicit a specific response. In Arabidopsis plants, a multi-step two-component system is well established as a key element of plant hormone cytokinin signaling （To and Kieber, 2008）.

关键词： adaptations of plants Common Channel Signaling TCOF1 gene Common Cold Transcription Factors signals COLD Cold stress

IWTW:A Framework for IoWT Cyber Threat Analysis

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Computer Modeling in Engineering & Sciences 2024年第11期141卷 1575-1622页

作者： GyuHyun jeon Hojun Jin Ju Hyeon Lee Seungho jeon Jung Taek Seo Department of Information Security Gachon UniversitySeongnam13120Republic of Korea Department of Computer Engineering(Smart Security) Gachon UniversitySeongnam13120Republic of Korea

The Internet of Wearable Things(IoWT)or Wearable Internet of Things(WIoT)is a new paradigm that combines IoT and wearable *** in IoT technology have enabled the miniaturization of sensors embedded in wearable devices and the ability to communicate data and access real-time information over low-power mobile *** devices are highly interdependent with mobile ***,due to their limited processing power and bandwidth,IoWT devices are vulnerable to cyberattacks due to their low level of *** modeling and frameworks for analyzing cyber threats against existing IoT or low-power protocols have been actively *** threat analysis framework used in existing studies was limited to specific protocols and did not target IoWT *** addition,In the literature surveyed to date,no cyber threat analysis framework is targeting ***,the threat model presented in the existing research on cyber threat analysis and modeling for IoWT is specialized for specific *** addition,because it does not present standardized attack tactics and techniques,there is a limitation in that it is difficult to identify attacks *** this paper,we propose an Internet of Wearable Things threat analysis frameWork(IWTW)framework that can derive security threats through systematic analysis of IoWT attack cases and possible security threats and perform cyber threat analysis based on *** methodology for developing the IWTW framework consists of three steps:Analysis,Standardization,and *** attack cases and potential security threats are analyzed in the analysis *** the standardization stage,attack tactics and techniques derived from the analysis of attack cases and potential security threats are standardized,resulting in 3 attack categories,18 attack tactics,and 68 attack *** the compilation stage,standardized security threats are combined to develop the IWTW framework *** present four case st

关键词： Internet of wearable things wearable device threat framework security threat

The westward intrusion of south Pacific water at the western tip of the New Guinea Island

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Acta Oceanologica Sinica 2013年第1期32卷 24-31页

作者： KIM Eung jeon Dongchull Hadikusumah Ocean Circulation & Climate Research Division Korea Institute of Ocean Science and Technology Physical Oceanography Laboratory Indonesian Institute of Sciences-Research Center for Oceanography

From the eastern Indonesian cruise from November 14 to 23, 2007, CTD （conductivity, temperature, depth profiler）/ADCP （acoustic Doppler current profiler）casting and seawater sampling were done at 25 stations around Waigeo Island near New Guinea Island. It was found overall westward intrusion of the south Pacific waters into the Seram Sea and southward spreading of the north and south Pacific waters into the Seram Sea. There is westward residual flow along the channel between Waigeo and New Guinea within upper 200 m with the maximum speed up to 50 cm/s, and much weaker eastward flow in the lower layer （〈 10 cm/s） due to blocking by the shallow sill at the west of the Dampier Strait. The abrupt change of bottom topography induces active horizontal and vertical mixing which results in a three-layered current system with a major through-flow of-0.99 Sv （Sv = 106 ma/s） into the Seram Sea; the transports in the upper and the lower layers are -1.14 Sv and -0.24 Sv （westward）, respectively, and in the middle there is a return flow with the transoort of ＋0.39 Sv （eastward）.

关键词： a three-layered system New Guinea coastal undercurrent south Pacific tropical water (SPTW),south Pacific intermediate water (SP1W) vertical mixing

The Immersed Interface Hybridized Difference Method for Parabolic Interface Problems

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Numerical Mathematics(Theory,Methods and Applications) 2022年第2期15卷 336-359页

作者： Youngmok jeon Son-Young Yi Department of Mathematics Ajou UniversitySuwon 16499Republic of Korea Department of Mathematical Sciences The University of Texas at El PasoEl PasoTX 79968USA

We propose several immersed interface hybridized difference methods(IHDMs),combined with the Crank-Nicolson time-stepping scheme,for parabolic interface *** IHDM is the same as the hybrid difference method away from the interface cells,but the finite difference operators on the interface cells are modified tomaintain the same accuracy throughout the entire *** themodification process,we consider virtual extensions of two sub-solutions in the interface cells in such a way that they satisfy certain jump equations between *** propose several different sets of jump equations and their resulting discrete methods for one-and two-dimensional *** numerical results are presented to demonstrate the accuracy and robustness of the proposed methods.

关键词： Parabolic interface problem hybrid difference method immersed interface

Prediction accuracy of reservoir break flood simulation model using finite volume method and UAV

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International Journal of Agricultural and Biological Engineering 2020年第6期13卷 7-15页

作者： jeongbae jeon Won Choi Spatial Information Research Institute Korea Land and Geospatial Infomatix CorporationKorea Land and Geospatial Infomatix CorporationJeollabuk-doSouth Korea Department of Rural Systems Engineering Global Smart Farm Convergence MajorResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826South Korea

Methods for producing high-resolution digital topographic maps using an unmanned aerial vehicle(UAV),and 3D fluid dynamics simulation to estimate the flooded areas caused by a collapsed reservoir,were proposed in this *** UAV flight path for photographing damaged areas was divided into two sections considering the drone flight time and overlapping range of the images in the x-and *** metadata taken by the drone were transferred into world coordinates by tracking the key features of the photographs of nearby areas using a 3D rotation *** point cloud data with a 3D space were extracted from the registered images,and a digital surface map(DSM)was produced using a point cloud classification geometric mapping *** amend the serious elevation errors caused by natural or artificial obstacles,a kriging interpolation method was used to reproduce the DSM.A transient computational simulation that considers both the complex geometric topology and hydrodynamic energy of flowing water was conducted using FLOW-3D software to deal with an renormalization group(RNG)turbulence *** flooded areas calculated through visual reading using images taken by the UAV were compared with the 3D simulation results for *** flooded areas estimated through the simulation were approximately 18.3%larger than those found by visual *** flows were mainly observed in obstacles or curved areas of the stream,and the differences in the water depth could be further ***,the villagers confirmed that the flooded areas were much greater than what was seen through the visual ***,the combination of UAV surveying and the 3D simulation method based on the RNG turbulence model is recommended to accurately estimate flooded areas,and it will support an administrative policy aimed at minimizing the economic costs of damage caused by future reservoir collapses.

关键词： reservoir failure flooded area finite volume method unmanned aerial vehicle photogrammetric survey digital surface model

A linkable signature scheme supporting batch verification for privacy protection in crowd-sensing

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Digital Communications and Networks 2024年第3期10卷 645-654页

作者： Xu Li Gwanggil jeon Wenshuo Wang Jindong Zhao School of Computer and Control Engineering Yantai UniversityYantai264005China Department of Embedded Systems Engineering Incheon National UniversityAcademyro-119Incheon22012Republic of Korea

The maturity of 5G technology has enabled crowd-sensing services to collect multimedia data over wireless network,so it has promoted the applications of crowd-sensing services in different fields,but also brings more privacy security challenges,the most commom which is privacy *** a privacy protection technology combining data integrity check and identity anonymity,ring signature is widely used in the field of privacy ***,introducing signature technology leads to additional signature verification *** the scenario of crowd-sensing,the existing signature schemes have low efficiency in multi-signature ***,it is necessary to design an efficient multi-signature verification scheme while ensuring *** this paper,a batch-verifiable signature scheme is proposed based on the crowd-sensing background,which supports the sensing platform to verify the uploaded multiple signature data efficiently,so as to overcoming the defects of the traditional signature scheme in multi-signature *** our proposal,a method for linking homologous data was presented,which was valuable for incentive mechanism and data *** results showed that the proposed scheme has good performance in terms of security and efficiency in crowd-sensing applications with a large number of users and data.

关键词： 5G network Crowd-sensing Privacy protection Ring signature Batch verification

Investigation of acoustic attributes based on preference and perceptional acoustics of Korean traditional halls for optimal design solutions

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Building Simulation 2024年第5期17卷 723-738页

作者： Beta Bayu Santika Haram Lee Jin Yong jeon Department of Architectural Engineering Hanyang UniversitySeoul 04763R.O.Korea

Immersed in the rich tapestry of traditional culture,Gugak,the traditional Korean music stands as a captivating embodiment of artistic *** study embarked on a comprehensive evaluation of a Gugak hall,employing acoustic measurements,computer simulations,and subjective perception *** evaluation focused on the reverberance,clarity,spatial impression,and preference,unravelling the secrets that shape the immersive Gugak *** intricate computer simulations and auralization,the experience of Gugak performances was meticulously brought to life,allowing exploration under diverse conditions by adjusting stage volume ratios from -20% to+20% and modifying the interior materials,including the walls,ceiling,and lateral *** Gugak halls exhibited relatively low values of reverberation time(RT),early decay time(EDT),and binaural quality index(BQI)the dominant factor influencing the acoustic environment was the effect of sound strength(G).Musical clarity(C80)value did not show an inverse proportionality to the reverberation ***,genre differences between traditional Korean and Western classical music did not significantly affect listeners’perception and satisfaction with regards to reverberance,clarity,and spatial *** a result,Gugak halls can adhere to the same acoustic design criteria as Western orchestra halls,since this study found that people perceived them the same *** this study,sound strength was found to be strongly correlated with perception *** was possible to enhance listeners’perception and preference regarding the acoustic environment through material and structural changes to the sidewalls and *** changes improved the reinforcement of low frequencies and simultaneously enhanced the relative effect of side ***,enhancing the reflection and spatial characteristics of the materials effectively improved listener *** on these findings,an optimal des

关键词： Korean traditional hall acoustical parameters perceptual evaluation acoustic preference stage volume ratio

Liver transplantation for patients with intrahepatic cholangiocarcinoma

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Hepatobiliary & Pancreatic Diseases International 2022年第6期21卷 590-593页

作者： Adarsh Vijay Hoonbae jeon Division of Hepato-Pancreato-Biliary&Abdominal Transplant Surgery Tulane Abdominal Transplant InstituteTulane University School of MedicineNew OrleansLA 70112-2632USA

Cholangiocarcinoma(CCA)constitutes a group of heterogeneous malignant tumors emerging in the biliary tree[1].Based on their anatomical distribution,CCA is classified into perihilar cholangio-carcinoma(pCCA),distal cholangiocarcinoma(dCCA)and intrahep-atic cholangiocarcinoma(iCCA)and they account for 60%-70%,20%-30%and 5%-10%of CCA,*** past decade has seen a 2-fold increase in annual percentage change in incidence of iCCA in USA when compared to the prior three decades[2].

关键词： carcinoma patients Liver