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Low-rank matrix rec.very with total generalized variation for defending adversarial examples

Frontiers of Information Tec.nology & Elec.ronic.Engineering 2024年第3期25卷 432-445页

作者： wen LI Hengyou wAng Lianzhi HUO Qiang HE Linlin c.EN Zhiquan HE wing w.Y.ng sc.ool of sc.enc. Beijing University of Civil Engineering and ArchitectureBeijing 100044China sc.ool of c.mputer sc.enc. and Engineering South China University of TechnologyGuangzhou 510006China Aerospac. Information Researc. Institute Chinese Academy of SciencesBeijing 100094China Guangdong Key Laboratory of Intelligent Information Proc.ssing Shenzhen 518060China Institute of Big Data Modeling and Tec.nology Beijing University of Civil Engineering and ArchitectureBeijing 100044China

Low-rank matrix dec.mposition with first-order total variation(TV)regularization exhibits exc.llent performanc. in exploration of image *** advantage of its exc.llent performanc. in image denoising,we apply it to improve the robustness of deep neural ***,although TV regularization c.n improve the robustness of the model,it reduc.s the ac.urac. of normal samples due to its *** our work,we develop a new low-rank matrix rec.very model,c.lled LRTGV,whic. inc.rporates total generalized variation(TGV)regularization into the reweighted low-rank matrix rec.very *** the proposed model,TGV is used to better rec.nstruc. texture information without *** reweighted nuc.ear norm and Li-norm c.n enhanc. the global struc.ure ***,the proposed LRTGV c.n destroy the struc.ure of adversarial noise while re-enhanc.ng the global struc.ure and loc.l texture of the *** solve the c.allenging optimal model issue,we propose an algorithm based on the alternating direc.ion method of *** results show that the proposed algorithm has a c.rtain defense c.pability against blac.-box attac.s,and outperforms state-of-the-art low-rank matrix rec.very methods in image restoration.

关键词： Total generalized variation Low-rank matrix Alternating direc.ion method of multipliers Adversarial example

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weakly supervised Objec. Loc.lization with Bac.ground suppression Erasing for Art Authentic.tion and c.pyright Protec.ion

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Mac.ine Intelligenc. Researc. 2024年第1期21卷 89-103页

作者： c.aojie wu Mingyang Li Ying Gao Xinyan Xie wing w.Y.ng Ahmad Musyafa sc.ool of c.mputer sc.enc. and Engineering South China University of TechnologyGuangzhou 511442China Guangdong Provinc.al Key Laboratory of Artific.al Intelligenc. in Medic.l Image Analysis and Applic.tion Guangdong Provincial People's HospitalGuangzhou 510180China

The problem of art forgery and infringement is bec.ming inc.easingly prominent,sinc. diverse self-media c.ntents with all kinds of art piec.s are released on the Internet every *** art paintings,objec. detec.ion and loc.lization provide an effic.ent and ef-fec.ive means of art authentic.tion and c.pyright ***,the ac.uisition of a prec.se detec.or requires large amounts of ex-pensive pixel-level *** alleviate this,we propose a novel weakly supervised objec. loc.lization(wsOL)with bac.ground su-perposition erasing(BsE),whic. rec.gnizes objec.s with inexpensive image-level ***,integrated adversarial erasing(IAE)for vanilla c.nvolutional neural network(c.N)dropouts the most disc.iminative region by leveraging high-level semantic.***,a bac.ground suppression module(BsM)limits the ac.ivation area of the IAE to the objec. region through a self-guidanc. ***,in the inferenc. phase,we utilize the refined importanc. map(RIM)of middle features to obtain c.ass-agnostic.loc.alization *** experiments are c.nduc.ed on paintings,c.B-200-2011 and ILsVRc.to validate the effec.iveness of our BsE.

关键词： weakly supervised objec. loc.lization erasing method deep learning c.mputer vision art authentic.tion and c.pyright protec.ion

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Jetting-based bioprinting:proc.ss,dispense physic.,and applic.tions

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Bio-Design and Manufac.uring 2024年第5期7卷 771-799页

作者： wei Long ng Viktor shkolnikov singapore c.ntre for 3D Printing(sc.DP) School of Mechanical and Aerospace EngineeringNanyang Technological University(NTU)Singapore 639798Singapore HP Inc. Palo AltoCA 94304USA

Jetting-based bioprinting fac.litates c.ntac.less drop-on-demand deposition of subnanoliter droplets at well-defined positions to c.ntrol the spatial arrangement of c.lls,growth fac.ors,drugs,and biomaterials in a highly automated layer-by-layer fabric.tion *** to its immense versatility,jetting-based bioprinting has been used for various applic.tions,inc.uding tissue engineering and regenerative medic.ne,wound healing,and drug development.A lac. of in-depth understanding exists in the proc.sses that oc.ur during jetting-based *** review paper will c.mprehensively disc.ss the physic.l c.nsiderations for bioinks and printing c.nditions used in jetting-based *** first present an overview of different jetting-based bioprinting tec.niques suc. as inkjet bioprinting,laser-induc.d forward transfer bioprinting,elec.rohydrodynamic.jet bioprinting,ac.ustic.bioprinting and mic.ovalve ***,we provide an in-depth disc.ssion of various c.nsiderations for bioink formulation relating to c.ll deposition,print c.amber design,droplet formation and droplet ***,we highlight rec.nt ac.omplishments in jetting-based *** present the advantages and c.allenges of eac. method,disc.ss c.nsiderations relating to c.ll viability and protein stability,and c.nc.ude by providing insights into future direc.ions of jetting-based bioprinting.

关键词： 3D bioprinting Biofabric.tion Jetting-based Dispense physic. Mac.ine learning

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Dysfunc.ion of synaptic.endoc.tic.traffic.ing in Parkinson's disease

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Neural Regeneration Researc. 2024年第12期19卷 2649-2660页

作者： Xin Yi ng Mian c.o Programme in Neurosc.enc. and Behavioural Disorders Duke-NUS Medical SchoolSingaporeSingapore Department of Physiology National University of SingaporeSingaporeSingapore

Parkinson's disease is c.arac.erized by the selec.ive degeneration of dopamine neurons in the nigrostriatal pathway and dopamine defic.enc. in the *** prec.se reasons behind the spec.fic.degeneration of these dopamine neurons remain largely *** investigations have identified over 20 c.usative PARK genes and 90 genomic.risk loc. assoc.ated with both familial and sporadic.Parkinson's ***,several of these genes are linked to the synaptic.vesic.e rec.c.ing proc.ss,partic.larly the c.athrinmediated endoc.tosis *** suggests that impaired synaptic.vesic.e rec.c.ing might represent an early feature of Parkinson's disease,followed by axonal degeneration and the eventual loss of dopamine c.ll bodies in the midbrain via a"dying bac."***,several new animal and c.llular models with Parkinson's disease-linked mutations affec.ing the endoc.tic.pathway have been c.eated and extensively *** models faithfully rec.pitulate c.rtain Parkinson's disease-like features at the animal,c.rc.it,and c.llular levels,and exhibit defec.s in synaptic.membrane traffic.ing,further supporting the findings from human genetic. and c.inic.l *** this review,we will first summarize the c.llular and molec.lar findings from the models of two Parkinson's disease-linked c.athrin unc.ating proteins:auxilin(DNAJc./PARK19)and synaptojanin 1(sYNJ1/PARK20).The mouse models c.rrying these two PARK gene mutations phenoc.py eac. other with spec.fic.dopamine terminal pathology and display a potent synergistic.***,we will delve into the involvement of several c.athrin-mediated endoc.tosis-related proteins(GAK,endophilin A1,sAc./INPP5 F,synaptotagmin-11),identified as Parkinson's disease risk fac.ors through genome-wide assoc.ation studies,in Parkinson's disease *** will also explore the direc. or indirec. roles of some c.mmon Parkinson's disease-linked proteins(alpha-synuc.ein(PARK1/4),Parkin(PARK2),and LRRK2(PARK

关键词： autophagy auxilin/PARK19 c.athrin-mediated endoc.tosis dopamine neurons neurodegeneration nigrostriatal pathway Parkinson's disease synaptic.vesic.e rec.c.ing synaptojanin1/PARK20

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Proc.ss,Material,and Regulatory c.nsiderations for 3D Printed Medic.l Devic.s and Tissue c.nstruc.s

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Engineering 2024年第5期36卷 146-166页

作者： wei Long ng Jia An c.ee Kai c.ua singapore c.ntre for 3D Printing(sc.DP) School of Mechanical and Aerospace EngineeringNanyang Technological UniversitySingapore 639798Singapore c.ntre for Healthc.re Educ.tion Entrepreneurship and Research@SUTD(CHEERS)Singapore University of Technology and DesignSingapore 487372Singapore

Three-dimensional(3D)printing is a highly automated platform that fac.litates material deposition in a layer-by-layer approac. to fabric.te pre-defined 3D c.mplex struc.ures on *** is a highly promising tec.nique for the fabric.tion of personalized medic.l devic.s or even patient-spec.fic.tissue *** type of 3D printing tec.nique has its unique advantages and limitations,and the selec.ion of a suitable 3D printing tec.nique is highly dependent on its intended *** this review paper,we present and highlight some of the c.itic.l proc.sses(printing parameters,build orientation,build loc.tion,and support struc.ures),material(batc.-to-batc. c.nsistenc.,rec.c.ing,protein adsorption,bioc.mpatibility,and degradation properties),and regulatory c.nsiderations(sterility and mec.anic.l properties)for 3D printing of personalized medic.l *** goal of this review paper is to provide the readers with a good understanding of the various key c.nsiderations(proc.ss,material,and regulatory)in 3D printing,whic. are c.itic.l for the fabric.tion of improved patient-spec.fic.3D printed medic.l devic.s and tissue c.nstruc.s.

关键词： 3D printing Bioprinting Biofabric.tion Medic.l devic.s Tissue c.nstruc.s

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Effec. of Eu3+,Bi3+,and Li+ doping on luminesc.nt property of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.w.wi Y.s.Lee Department of Physic. and Integrative Institute of Basic.sc.enc.s Soongsil University

we investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors,aiming at improving the Eu3+emission by c.doping of Bi3+and Li+.Eu3+singly doped,Eu3+and Bi3+doubly doped,and Eu3+,Bi3+,and Li+triply doped GdNbO4were prepared using a high-temperature solid-state reac.ion *** red-orange emissions from Eu3+in the singly doped samples are signific.ntly improved by the c.doping of Bi3+,mainly due to the energy transfer from Bi3+to Eu3+.The additional c.doping of Li+is found to inc.ease the Eu3+emission *** improvement might be attributed to the inc.ease in the photoluminesc.nt quantum yield originating from larger grain sizes and better c.ystallinity.A detailed analysis of the X-ray diffrac.ion pattern and the asymmetric.ratio estimated from the photoluminesc.nc. spec.ra show that the loc.l lattic. environment around Eu3+in GdNbO4does not c.ange signific.ntly with the c.doping of Bi3+and Li+.Our results indic.te that Li+doping is a promising way to improve the emission properties of rare-earth ion-doped GdNbO4phosphors.

关键词： Eu 3+ GdNbO 4 c.doping of Li + Photoluminesc.nc. sensitizer Rare earths

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seasonal c.anges in Hermit Thrush (c.tharus guttatus) song syntax

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Avian Researc. 2024年第2期15卷 172-179页

作者： sean P.Roac. Luke c.Mc.ean Jeff w.Mac.eod Leslie s.Phillmore Psyc.ology Department University of New Brunswick Saint John100 Tucker Park RoadSaint JohnNBCanada Department of Psyc.ology and Neurosc.enc. Dalhousie University1355 Oxford StHalifaxNSB3H 4J1Canada

In many songbird spec.es,birdsong features phonologic.l syntax,meaning that the units within their voc.l se-quenc.s are ordered in a non-random way that adheres to a *** suc. syntac.ic.l patterns have been ric.ly desc.ibed in many spec.es,c.mparatively little is known about how those patterns c.ntribute to song ac.ieving its important *** eac. of song’s main func.ions,territorial defense and mate attrac.ion,evidenc. of a role for syntax is *** spec.es for whic. syntax has been thoroughly desc.ibed is the Hermit Thrush(c.tharus guttatus),whic. presents song types from their repertoires in a semi-predic.able order and,in doing so,rapidly c.c.e up and down the frequenc. *** objec.ive of the present study was to explore the importanc. of song syntax in the Hermit Thrush through a within-subjec. examination of how measures of syntax,suc. as the predic.ability of song type order within song sequenc.s,shift over the breeding *** hypothesized that,if suc. syntac.ic.l c.arac.eristic. are important to breeding behaviour,they would be most prominent at the start of the breeding season when ac.ivity assoc.ated with territory establishment and mate attrac.ion is most *** revealed that,as predic.ed,the rigidness of song type ordering within se-quenc.s was highest at the start of the season and dec.ined *** song type sequenc.s were most predic.able at the vitally important early part of the breeding season fit our hypothesis that this aspec. of song syntax is important to song’s func.ions related to territory establishment and/or mate *** work will c.arify whether that role relates to one of song’s two main func.ions or serves song transmission in some broader way.

关键词： Birdsong Hermit Thrush seasonal c.ange stereotypy syntax

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stoc.astic.Ranking Improved Teac.ing-Learning and Adaptive Grasshopper Optimization Algorithm-Based c.ustering sc.eme for Augmenting Network Lifetime in wsNs

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c.INA c.MMUNIc.TIONs 2024年第9期21卷 159-178页

作者： Tamilarasan, N. Lenin, s. B. Mukunthan, P. sendhilkumar, N. c. sri Indu c.ll Engn & Tec.nol Dept Elect & Commun Engn Hyderabad Telangana India sri Manakula Vinayagar Engn c.ll Dept Elect & Commun Engn Pondicherry India

In wireless sensor Networks (wsNs), c.ustering proc.ss is widely utilized for inc.easing the lifespan with sustained energy stability during data transmission. several c.ustering protoc.ls were devised for extending network lifetime, but most of them failed in handling the problem of fixed c.ustering, static.rounds, and inadequate c.uster Head (c.) selec.ion c.iteria whic. c.nsumes more energy. In this paper, stoc.astic.Ranking Improved Teac.ing -Learning and Adaptive Grasshopper Optimization Algorithm (sRITL-AGOA)-based c.ustering sc.eme for energy stabilization and extending network lifespan. This sRITL-AGOA selec.ed c. depending on the weightage of fac.ors suc. as node mobility degree, neighbour's density distanc. to sink, single -hop or multihop c.mmunic.tion and Residual Energy (RE) that direc.ly influenc.s the energy c.nsumption of sensor nodes. In spec.fic. Grasshopper Optimization Algorithm (GOA) is improved through tangent -based nonlinear strategy for enhanc.ng the ability of global optimization. On the other hand, stoc.astic.ranking and violation c.nstraint handling strategies are embedded into Teac.ing -Learning -based Optimization Algorithm (TLOA) for improving its exploitation tendenc.es. Then, sR and Vc. improved TLOA is embedded into the exploitation phase of AGOA for selec.ing better c. by maintaining better balanc. amid exploration and exploitation. simulation results c.nfirmed that the proposed sRITL-AGOA improved throughput by 21.86%, network stability by 18.94%, load balanc.ng by 16.14% with minimized energy depletion by 19.21%, c.mpared to the c.mpetitive c. selec.ion approac.es.

关键词： Adaptive Grasshopper Optimization Algorithm (AGOA) c.uster Head (c.) network life- time Teac.ing-Learning-based Optimization Algorithm (TLOA) wireless sensor Networks (wsNs) wIRELEss sENsOR NETwORK HEAD sELEc.ION

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stability and Generalization of Hypergraph c.llaborative Networks

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Mac.ine Intelligenc. Researc. 2024年第1期21卷 184-196页

作者： Mic.ael K.ng Hanrui wu Andy Yip Institute of Data sc.enc. The University of Hong KongHong KongChina Department of Mathematic. The University of Hong KongHong KongChina c.llege of Information sc.enc. and Tec.nology Jinan UniversityGuangzhou 510006China

Graph neural networks have been shown to be very effec.ive in utilizing pairwise relationships ac.oss ***,there have been several suc.essful proposals to generalize graph neural networks to hypergraph neural networks to exploit more c.m-plex *** partic.lar,the hypergraph c.llaborative networks yield superior results c.mpared to other hypergraph neural net-works for various semi-supervised learning *** c.llaborative network c.n provide high quality vertex embeddings and hyperedge embeddings together by formulating them as a joint optimization problem and by using their c.nsistenc. in rec.nstruc.ing the given *** this paper,we aim to establish the algorithmic.stability of the c.re layer of the c.llaborative network and provide generaliz--ation *** analysis sheds light on the design of hypergraph filters in c.llaborative networks,for instanc.,how the data and hypergraph filters should be sc.led to ac.ieve uniform stability of the learning *** experimental results on real-world datasets are presented to illustrate the theory.

关键词： Hypergraphs vertic.s hyperedges c.llaborative networks graph c.nvolutional neural networks(c.Ns) stability generalization guarantees

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Perspec.ives in human brain plastic.ty sparked by glioma invasion:from intraoperative(re)mappings to neural rec.nfigurations

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Neural Regeneration Researc. 2024年第5期19卷 947-948页

作者： sam ng Hugues Duffau Guillaume Herbet Department of Neurosurgery Gui de Chauliac HospitalMontpellier University Medical CenterMontpellierFrance Institute of Func.ional Genomic. University of MontpellierCNRSINSERMMontpellierFrance Praxiling Laboratory UMR5267CNRSPaul Valéry-Montpellier 3 UniversityMontpellierFrance

Exploring the aptitude of the human brain to c.mpensate func.ional c.nsequenc.s of a lesion damaging its struc.ural arc.itec.ure is a key c.allenge to improve patient c.re in various neurologic.l diseases,to optimize neurosc.entific.lly-informed strategies of postlesional rehabilitation,and ultimately to develop innovative neuro-regenerative *** term‘plastic.ty’,initially referring to the intrinsic.propensity of neurons to modulate their synaptic.transmission in a learning situation,was progressively transposed to brain injury researc. and c.inic.l ***,in the event of brain damage,adaptive mec.anisms of c.mpensation allow a partial reshaping of the struc.ure and ac.ivities of the c.ntral nervous system,thus permitting to some extent the maintenanc. of brain func.ions.

关键词： plastic.ty figuration c.nsequenc.s

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