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(r,QI)-Transform：Reversible Data Anonymity Based on Numeric Type of Data in Outsourced Database

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Journal of Electronic Science and Technology 2017年第3期15卷 222-230页

作者： Iuon-Chang Lin yang-Te lee Chen-yang Cheng the Department of Management Information Systems Chung Hsing University the Department of Photonics and Communication Engineering Asia University Taichung 400 Department of Industrial Engineering and Management Taipei University of Technology Taipei 10608

An outsource database is a database service provided by cloud computing *** the outsource database can reduce the hardware and software＇s cost and also get more efficient and reliable data processing ***,the outsource database still has some *** the service provider does not have sufficient confidence,there is the possibility of data *** data may has user＇s privacy,so data leakage may cause data privacy *** on this factor,to protect the privacy of data in the outsource database becomes very *** the past,scholars have proposed k-anonymity to protect data privacy in the *** lets data become anonymous to avoid data privacy *** k-anonymity has some problems,it is irreversible,and easier to be attacked by homogeneity attack and background knowledge *** on,scholars have proposed some studies to solve homogeneity attack and background knowledge *** their studies still cannot recover back to the original *** this paper,we propose a data anonymity *** can be reversible and also prevent those two *** study is based on the proposed *** can be used on the numeric type of attributes in the outsource *** the experiment,we discussed the time required to anonymize and recover ***,we investigated the defense against homogeneous attack and background knowledge *** the end,we summarized the proposed method and future researches.

关键词： Index Terms--Cloud database data anonymity,database privacy outsource database reversible

Structure of Abelian rings

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Frontiers of Mathematics in China 2017年第1期12卷 117-134页

作者： Juncheol HAN yang lee Sangwon PARK Department of Mathematics Education Pusan National University Pusan 46241 Korea Department of Mathematics Dong-A University~ Pusan 49315 Korea

Let R be a ring with identity. We use J（R）, G（R）, and X（R） to denote the Jacobson radical, the group of all units, and the set of all nonzero nonunits in R, respectively. A ring is said to be Abelian if every idempotent is central. It is shown, for an Abelian ring R and an idempotent-lifting ideal N J（R） of R, that H has a complete set of primitive idempotents if and only if R/N has a complete set of primitive idempotents. The structure of an Abelian ring R is completely determined in relation with the local property when X（R） is a union of 2, 3, 4, and 5 orbits under the left regular action on X（R） by G（R）. For a semiperfect ring R which is not local, it is shown that if G（R） is a cyclic group with 2 ∈ G（R）, then R is finite. We lastly consider two sorts of conditions for G（R） to be an Abelian group.

关键词： Abelian ring regular group action local ring semiperfect ring finite ring Abelian group idempotent-lifting complete set of primitive idempotents

An integrated approach to improve the performance of lean–electrolyte lithium–sulfur batteries

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Journal of Energy Chemistry 2022年第4期31卷 585-592页

作者： Hualin Ye Jianguo Sun Yun Zhao Jim yang lee Department of Chemical and Biomolecular Engineering National University of Singapore119260Singapore Department of Mechanical Engineering National University of Singapore117575Singapore

While the sulfur conversion reaction kinetics in Li–S batteries is nowadays improved by the use of appropriate electrocatalysts,it remains a challenge for the batteries to perform well under the lean electrolyte condition where polysulfide shuttle,electrode passivation and the loss of electrolyte due to side reactions,are *** challenges are addressed in this study by the tandem use of a polysulfide conversion catalyst and a redox–targeting mediator in a gel sulfur ***,the gel cathode reduces the polysulfide mobility and hence the polysulfide shuttle and the passivation of the lithium anode by the crossover *** redox mediator restrains the deposition of inactive sulfur species in the cathode thereby enabling the Fe–N and Co–N co–doped carbon catalyst to prolong its catalytic ***,the integrated catalytic system is able to increase the discharge capacity of high–loading (6.8 mg cm^(-2)) lean–electrolyte (4.0μL mg^(-1)) Li–S batteries from~630 to~1316 m Ah g^(-1),concurrently with an improvement of the cycle life (600 cycles with 46%capacity retention at 1.0 m A cm^(-2)).Redox mediator assisted catalysis in a gel cathode is therefore an effective strategy to extend the application of the sulfur conversion catalyst in lean electrolyte Li–S batteries.

关键词： Redox mediators Gel electrolytes Polysulfide catalysis Lean electrolyte Lithium–sulfur batteries

Stochastic Computing Convolutional Neural Network Architecture Reinvented for Highly Efficient Artificial Intelligence Workload on Field-Programmable Gate Array

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Research 2024年第2期2024卷 55-79页

作者： yang yang lee Zaini Abdul Halim Mohd Nadhir Ab Wahab Tarik Adnan Almohamad School of Electrical and Electronic Engineering Universiti Sains MalaysiaNibong Tebal 14300 Penang Malaysia School of Computer Sciences Universiti Sains MalaysiaGelugor11800 PenangMalaysia Electrical-Electronics Engineering Department Faculty of EngineeringKarabuk University78050 KarabukTurkiye

Stochastic computing(SC)has a substantial amount of study on application-specific integrated circuit(ASIC)design for artificial intelligence(AI)edge computing,especially the convolutional neural network(CNN)***,SC has little to no optimization on field-programmable gate array(FPGA).Scaling up the ASIC logic without FPGA-oriented designs is inefficient,while aggregating thousands of bitstreams is still challenging in the conventional *** research has reinvented several FPGA-efficient 8-bit SC CNN computing architectures,i.e.,SC multiplexer multiply-accumulate,multiply-accumulate function generator,and binary rectified linear unit,and successfully scaled and implemented a fully parallel CNN model on Kintex7 *** proposed SC hardware only compromises 0.14%accuracy compared to binary computing on the handwriting Modified National Institute of Standards and Technology classification task and achieved at least 99.72%energy saving per image feedforward and 31?more data throughput than modern *** to SC,early decision termination pushed the performance baseline exponentially with minimum accuracy loss,making SC CNN extremely lucrative for AI edge computing but limited to classification *** SC's inherent noise heavily penalizes CNN regression performance,rendering SC unsuitable for regression tasks.

关键词： hardware Highly rendering

Web-based interactive visualization of 3D video mosaics using X3D standard

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第7期7卷 1259-1265页

作者： CHON Jaechoon lee yang-Won SHIBASAKI Ryosuke Center for Spatial Information Science the University of Tokyo 4-6-1 Komaba Meguro Tokyo 153-8505 Japan

We present a method of 3D image mosaicing for real 3D representation of roadside buildings, and implement a Web-based interactive visualization environment for the 3D video mosaics created by 3D image mosaicing. The 3D image mo- saicing technique developed in our previous work is a very powerful method for creating textured 3D-GIS data without excessive data processing like the laser or stereo system. For the Web-based open access to the 3D video mosaics, we build an interactive visualization environment using X3D, the emerging standard of Web 3D. We conduct the data preprocessing for 3D video mosaics and the X3D modeling for textured 3D data. The data preprocessing includes the conversion of each frame of 3D video mosaics into concatenated image files that can be hyperlinked on the Web. The X3D modeling handles the representation of concatenated images using necessary X3D nodes. By employing X3D as the data format for 3D image mosaics, the real 3D representation of roadside buildings is extended to the Web and mobile service systems.

关键词： 3D video mosaics Interactive 3D visualization Web 3D

Unraveling the electrocatalytically active sites and stability of Co&Co oxides on nanocarbon for oxygen evolution reaction in acid solution

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Journal of Energy Chemistry 2020年第10期29卷 8-13页

作者： Yansong Zhu Tianran Zhang Tao An Yun Zong Jim yang lee Faculty of Pharmacy Shenyang Pharmaceutical UniversityShenyang 110016LiaoningChina Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore Institute of Materials Research and Engineering(IMRE) Singapore

The oxygen evolution reaction(OER)in acid solution is a significant challenge for non-precious metal electrocatalysts based on the transition metals although they have shown good OER performance in alkaline *** this study,we synthesized the electrocatalysts containing two or three Co species(Co,CoO and Co3O4)nanoparticles on porous graphitic carbon(PGC)nanosheets which were prepared by a facile and low-cost synthesis where Co(NO3)2•6H2O and glucose were pyrolyzed in the presence of sodium chloride *** Co3O4-dominated catalyst as-prepared,Co3O4/PGC,is OER active in acid solution(1.74 V at a current density of 10 mA cm^−2).We identified the OER active sites in the catalyst to be the Co3O4 nanoparticles rather than carbon-coated *** comparative studies of the varied catalysts,we also proved that Co3O4 is catalytically more active than Co and *** Co3O4/PGC catalyst,however,lost almost of all its activity after 100 voltammetric cycles in the 1.2-1.8 V voltage *** the catalyst stability was examined potentiostatically at different potentials,the catalyst showed good stability at 1.4 *** stability study also revealed the mechanism of the catalyst instability in acid was caused by Co3O4 reduction below 1.4 V and by Co3O4 oxidation above 1.4 V.1.4 V is therefore a unique potential where Co3O4 nanoparticles are neither oxidized nor reduced to be susceptible to acid dissolution.

关键词： Non-precious metal Active sites Oxygen evolution reaction Acid Stability

Duo Property Applied to Powers and Regular Elements

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Algebra Colloquium 2023年第1期30卷 15-30页

作者： TaiKeun Kwak yang lee Zhelin Piao Yeonsook Seo Department of Mathematics Daejin UniversityPocheon 11159Korea Department of Mathematics Yanbian UniversityYanjiJilin 133002China Institute of Basic ScienceDaejin UniversityPocheon 11159Korea Department of Mathematics Yanbian UniversityYanjiJilin 133002China Department of Mathematics Pusan National UniversityBusan 46241Korea

The object of this article is to initiate the study of a class of rings in which the right duo property is applied in relation to powers of elements and the monoid of all regular *** rings shall be called right *** investigate the structures of group rings,right quotient rings,matrix rings and(skew)polynomial rings,through the study of right exp-DR *** addition,we provide a method of constructing finite non-abelian p-groups for any prime p.

关键词： right(exp-)DR ring regular element (weakly)right duo ring right quotient ring group ring

Matrix Rings over Reflexive Rings

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Algebra Colloquium 2018年第3期25卷 459-474页

作者： Jeoung Soo Cheon Tai Keun Kwak yang lee Department of Mathematics Pusan National University Busan 46241 Korea Department of Mathematics Daejin University Pocheon 11159 Korea Institute of Basic Science Daejin University Pocheon 11159 Korea

The concept of reflexive property is introduced by Mason. This note concerns a ring-theoretic property of matrix rings over reflexive rings. We introduce the concept of weakly reflexive rings as a generalization of reflexive rings. From any ring, we can construct weakly reflexive rings but not reflexive, using its lower nilradical. We study various useful properties of such rings in relation with ideals in matrix rings, showing that this new property is Morita invariant. We also investigate the weakly reflexive property of several sorts of ring extensions which have roles in ring theory.

关键词： weakly reflexive ring reflexive ring power of ideal matrix ring ring of minimal order

Some remarks on one-sided regularity

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Frontiers of Mathematics in China 2018年第4期13卷 833-847页

作者： Tai Keun KWAK yang lee Young Joo SEO Department of Mathematics Daejin University Pocheon 11159 Korea Institute of Basic Science Daejin University Pocheon 11159 Korea Department of Mathematics Hanyang University Seoul 04763 Korea

A ring is said to be right （resp., left） regular-duo if every right （resp., left） regular element is regular. The structure of one-sided regular elements is studied in various kinds of rings, especially, upper triangular matrix rings over one-sided Ore domains. We study the structure of （one-sided） regular-duo rings, and the relations between one-sided regular-duo rings and related ring theoretic properties.

关键词： right (left) regular element right (left) regular-duo ring uppertriangular matrix ring right (left) Ore domain