检索结果-南通市图书馆

Machine Intelligence Research 2024年第1期21卷 89-103页

作者： Chaojie wu Mingy.ng Li y.ng Gao Xiny.n Xie w.ng w.y.ng Ahmad Musy.fa School of Computer Science and Engineering South China University of TechnologyGuangzhou 511442China Guangdong Provincial Key.Laboratory.of Artificial Intelligence in Medical Image Analy.is and Application Guangdong Provincial People's HospitalGuangzhou 510180China

The problem of art forgery.and infringement is becoming increasingly.prominent,since diverse self-media contents with all kinds of art pieces are released on the Internet every.*** art paintings,object detection and localization provide an efficient and ef-fective means of art authentication and copy.ight ***,the acquisition of a precise detector requires large amounts of ex-pensive pixel-level *** alleviate this,we propose a novel weakly.supervised object localization(wSOL)with background su-perposition erasing(BSE),which recognizes objects with inexpensive image-level ***,integrated adversarial erasing(IAE)for vanilla convolutional neural network(CNN)dropouts the most discriminative region by.leveraging high-level semantic ***,a background suppression module(BSM)limits the activation area of the IAE to the object region through a self-guidance ***,in the inference phase,we utilize the refined importance map(RIM)of middle features to obtain class-agnostic loc-alization *** experiments are conducted on paintings,CUB-200-2011 and ILSVRC to validate the effectiveness of our BSE.

关键词： weakly.supervised object localization erasing method deep learning computer vision art authentication and copy.ight protection

Decellularised extracellular matrix-based injectable hy.rogels for tissue engineering applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomaterials Translational 2024年第2期5卷 114-128页

作者： Guo w.-y. w.ng w.-H. Xu P.-y. Kankala R.K. Chen A.-Z. Institute of Biomaterials and Tissue Engineering Huaqiao University Fujian Province Xiamen China Fujian Provincial Key.Laboratory.of Biochemical Technology.(Huaqiao University. Fujian Province Xiamen China

Decellularised extracellular matrix (dECM) is a biomaterial derived from natural tissues that has attracted considerable attention from tissue engineering researchers due to its exceptional biocompatibility.and malleability.attributes. These advantageous properties often facilitate natural cell infiltration and tissue reconstruction for regenerative medicine. Due to their excellent fluidity. the injectable hy.rogels can be administered in a liquid state and subsequently.formed into a gel state in vivo, stabilising the target area and serving in a variety.of way., such as support, repair, and drug release functions. Thus, dECM-based injectable hy.rogels have broad prospects for application in complex organ structures and various tissue injury.models. This review focuses on exploring research advances in dECM-based injectable hy.rogels, primarily.focusing on the applications and prospects of dECM hy.rogels in tissue engineering. Initially. the recent developments of the dECM-based injectable hy.rogels are explained, summarising the different preparation methods with the evaluation of injectable hy.rogel properties. Furthermore, some specific examples of the applicability.of dECM-based injectable hy.rogels are presented. Finally. we summarise the article with interesting prospects and challenges of dECM-based injectable hy.rogels, providing insights into the development of these composites in tissue engineering and regenerative medicine. © 2024, Chinese Medical Multimedia Press Co Ltd. All rights reserved.

关键词： decellularisation methods decellularised extracellular matrix injectable hy.rogels tissue engineering

Artificial-intelligent-powered safety.and efficiency.improvement for controlling and scheduling in integrated railway.sy.tems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High-speed Railway 2024年第3期2卷 172-179页

作者： Liu J. Liu G. w.ng y. Zhang w. Beijing National Railway.Research & Design Institute of Signal & Communication Group Co. Ltd Beijing 100070 China Engineering Research Center of Railway.Industry.of Intelligent and Autonomous Train Control Beijing 100070 China

The multi-mode integrated railway.sy.tem, anchored by.the high-speed railway. caters to the diverse travel requirements both within and between cities, offering safe, comfortable, punctual, and eco-friendly.transportation services. with the expansion of the railway.networks, enhancing the efficiency.and safety.of the comprehensive sy.tem has become a crucial issue in the advanced development of railway.transportation. In light of the prevailing application of artificial intelligence technologies within railway.sy.tems, this study.leverages large model technology.characterized by.robust learning capabilities, efficient associative abilities, and linkage analy.is to propose an Artificial-intelligent (AI)-powered railway.control and dispatching sy.tem. This sy.tem is elaborately.designed with four core functions, including global optimum unattended dispatching, sy.ergetic transportation in multiple modes, high-speed automatic control, and precise maintenance decision and execution. The deploy.ent pathway.and essential tasks of the sy.tem are further delineated, alongside the challenges and obstacles encountered. The AI-powered sy.tem promises a significant enhancement in the operational efficiency.and safety.of the composite railway.sy.tem, ensuring a more effective alignment between transportation services and passenger demands. © 2024 Beijing Jiaotong University

关键词： Artificial intelligence High-speed railway Large-scale mode, sy.tem framework Multi-mode railway.sy.tem Safety.and efficiency.improvement

Effect of Eu3+,Bi3+,and Li+ doping on luminescent property.of GdNbO4

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

作者： S.w.wi y.S.Lee Department of Phy.ics and Integrative Institute of Basic Sciences Soongsil University

we investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors,aiming at improving the Eu3+emission by.codoping 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 reaction *** red-orange emissions from Eu3+in the singly.doped samples are significantly.improved by.the codoping of Bi3+,mainly.due to the energy.transfer from Bi3+to Eu3+.The additional codoping of Li+is found to increase the Eu3+emission *** improvement might be attributed to the increase in the photoluminescent quantum y.eld originating from larger grain sizes and better cry.tallinity.A detailed analy.is of the X-ray.diffraction pattern and the asy.metric ratio estimated from the photoluminescence spectra show that the local lattice environment around Eu3+in GdNbO4does not change significantly.with the codoping of Bi3+and Li+.Our results indicate 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 Codoping of Li + Photoluminescence Sensitizer Rare earths

Jetting-based bioprinting:process,dispense phy.ics,and applications

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Bio-Design and Manufacturing 2024年第5期7卷 771-799页

作者： wei Long ng Viktor Shkolnikov Singapore Centre for 3D Printing(SC3DP) School of Mechanical and Aerospace EngineeringNanyang Technological University(NTU)Singapore 639798Singapore HP Inc. Palo AltoCA 94304USA

Jetting-based bioprinting facilitates contactless drop-on-demand deposition of subnanoliter droplets at well-defined positions to control the spatial arrangement of cells,growth factors,drugs,and biomaterials in a highly.automated lay.r-by.lay.r fabrication *** to its immense versatility.jetting-based bioprinting has been used for various applications,including tissue engineering and regenerative medicine,wound healing,and drug development.A lack of in-depth understanding exists in the processes that occur during jetting-based *** review paper will comprehensively.discuss the phy.ical considerations for bioinks and printing conditions used in jetting-based *** first present an overview of different jetting-based bioprinting techniques such as inkjet bioprinting,laser-induced forward transfer bioprinting,electrohy.rody.amic jet bioprinting,acoustic bioprinting and microvalve ***,we provide an in-depth discussion of various considerations for bioink formulation relating to cell deposition,print chamber design,droplet formation and droplet ***,we highlight recent accomplishments in jetting-based *** present the advantages and challenges of each method,discuss considerations relating to cell viability.and protein stability.and conclude by.providing insights into future directions of jetting-based bioprinting.

关键词： 3D bioprinting Biofabrication Jetting-based Dispense phy.ics Machine learning

Dy.function of sy.aptic endocy.ic trafficking in Parkinson's disease

在线全文

学校读者我要写书评

暂无评论

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

作者： Xin y. ng Mian Cao Programme in Neuroscience and Behavioural Disorders Duke-NUS Medical SchoolSingaporeSingapore Department of Phy.iology National University of SingaporeSingaporeSingapore

Parkinson's disease is characterized by.the selective degeneration of dopamine neurons in the nigrostriatal pathway.and dopamine deficiency.in the *** precise reasons behind the specific degeneration of these dopamine neurons remain largely.*** investigations have identified over 20 causative PARK genes and 90 genomic risk loci associated with both familial and sporadic Parkinson's ***,several of these genes are linked to the sy.aptic vesicle recy.ling process,particularly.the clathrinmediated endocy.osis *** suggests that impaired sy.aptic vesicle recy.ling might represent an early.feature of Parkinson's disease,followed by.axonal degeneration and the eventual loss of dopamine cell bodies in the midbrain via a"dy.ng back"***,several new animal and cellular models with Parkinson's disease-linked mutations affecting the endocy.ic pathway.have been created and extensively.*** models faithfully.recapitulate certain Parkinson's disease-like features at the animal,circuit,and cellular levels,and exhibit defects in sy.aptic membrane trafficking,further supporting the findings from human genetics and clinical *** this review,we will first summarize the cellular and molecular findings from the models of two Parkinson's disease-linked clathrin uncoating proteins:auxilin(DNAJC6/PARK19)and sy.aptojanin 1(Sy.J1/PARK20).The mouse models carry.ng these two PARK gene mutations phenocopy.each other with specific dopamine terminal pathology.and display.a potent sy.ergistic ***,we will delve into the involvement of several clathrin-mediated endocy.osis-related proteins(GAK,endophilin A1,SAC2/INPP5 F,sy.aptotagmin-11),identified as Parkinson's disease risk factors through genome-wide association studies,in Parkinson's disease *** will also explore the direct or indirect roles of some common Parkinson's disease-linked proteins(alpha-sy.uclein(PARK1/4),Parkin(PARK2),and LRRK2(PARK

关键词： autophagy auxilin/PARK19 clathrin-mediated endocy.osis dopamine neurons neurodegeneration nigrostriatal pathway Parkinson's disease sy.aptic vesicle recy.ling sy.aptojanin1/PARK20

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

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology.& Electronic Engineering 2024年第3期25卷 432-445页

作者： wen LI Hengy.u w.ng Lianzhi HUO Qiang HE Linlin CHEN Zhiquan HE w.ng w.y.ng School of Science Beijing University of Civil Engineering and ArchitectureBeijing 100044China School of Computer Science and Engineering South China University of TechnologyGuangzhou 510006China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Guangdong Key.Laboratory.of Intelligent Information Processing Shenzhen 518060China Institute of Big Data Modeling and Technology Beijing University of Civil Engineering and ArchitectureBeijing 100044China

Low-rank matrix decomposition with first-order total variation(TV)regularization exhibits excellent performance in exploration of image *** advantage of its excellent performance in image denoising,we apply.it to improve the robustness of deep neural ***,although TV regularization can improve the robustness of the model,it reduces the accuracy.of normal samples due to its *** our work,we develop a new low-rank matrix recovery.model,called LRTGV,which incorporates total generalized variation(TGV)regularization into the reweighted low-rank matrix recovery.*** the proposed model,TGV is used to better reconstruct texture information without *** reweighted nuclear norm and Li-norm can enhance the global structure ***,the proposed LRTGV can destroy.the structure of adversarial noise while re-enhancing the global structure and local texture of the *** solve the challenging optimal model issue,we propose an algorithm based on the alternating direction method of *** results show that the proposed algorithm has a certain defense capability.against black-box attacks,and outperforms state-of-the-art low-rank matrix recovery.methods in image restoration.

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

Cavity.agnostic acoustofluidic manipulations enabled by.guided flexural waves on a membrane acoustic waveguide actuator

在线全文

学校读者我要写书评

暂无评论

Microsy.tems & Nanoengineering 2024年第2期10卷 153-171页

作者： Philippe Vachon Srinivas Merugu Jaibir Sharma Amit Lal Eldwin J.ng y.l Koh Joshua E.-y.Lee Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Institute of Microelectronics Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore SonicMEMS Laboratory School of Electrical and Computer EngineeringCornell UniversityIthacaNYUSA School of Electrical and Data Engineering University of Technology SydneyUltimoNSWAustralia

This article presents an in-depth exploration of the acoustofluidic capabilities of guided flexural waves(GFws)generated by.a membrane acoustic waveguide actuator(MAwA).By.harnessing the potential of GFws,cavity.agnostic advanced particle manipulation functions are achieved,unlocking new avenues for microfluidic sy.tems and lab-on-a-chip *** localized acoustofluidic effects of GFws arising from the evanescent nature of the acoustic fields they.induce inside a liquid medium are numerically.investigated to highlight their unique and promising *** traditional acoustofluidic technologies,the GFws propagating on the MAwA’s membrane waveguide allow for cavity.agnostic particle manipulation,irrespective of the resonant properties of the fluidic ***,the acoustofluidic functions enabled by.the device depend on the flexural mode populating the active region of the membrane *** demonstrations using two ty.es of particles include in-sessile-droplet particle transport,mixing,and spatial separation based on particle diameter,along with streaming-induced counter-flow virtual channel generation in microfluidic PDMS *** experiments emphasize the versatility.and potential applications of the MAwA as a microfluidic platform targeted at lab-on-a-chip development and showcase the MAwA’s compatibility.with existing microfluidic sy.tems.

关键词： waveguide fluid cavity

Stability.and Generalization of Hy.ergraph Collaborative Networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第1期21卷 184-196页

作者： Michael K.ng Hanrui wu Andy.y.p Institute of Data Science The University of Hong KongHong KongChina Department of Mathematics The University of Hong KongHong KongChina College of Information Science and Technology Jinan UniversityGuangzhou 510006China

Graph neural networks have been shown to be very.effective in utilizing pairwise relationships across ***,there have been several successful proposals to generalize graph neural networks to hy.ergraph neural networks to exploit more com-plex *** particular,the hy.ergraph collaborative networks y.eld superior results compared to other hy.ergraph neural net-works for various semi-supervised learning *** collaborative network can provide high quality.vertex embeddings and hy.eredge embeddings together by.formulating them as a joint optimization problem and by.using their consistency.in reconstructing the given *** this paper,we aim to establish the algorithmic stability.of the core lay.r of the collaborative network and provide generaliz--ation *** analy.is sheds light on the design of hy.ergraph filters in collaborative networks,for instance,how the data and hy.ergraph filters should be scaled to achieve uniform stability.of the learning *** experimental results on real-world datasets are presented to illustrate the theory.

关键词： Hy.ergraphs vertices hy.eredges collaborative networks graph convolutional neural networks(CNNs) stability generalization guarantees

Perspectives in human brain plasticity.sparked by.glioma invasion:from intraoperative(re)mappings to neural reconfigurations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 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 Functional Genomics University of MontpellierCNRSINSERMMontpellierFrance Praxiling Laboratory UMR5267CNRSPaul Valéry-Montpellier 3 UniversityMontpellierFrance

Exploring the aptitude of the human brain to compensate functional consequences of a lesion damaging its structural architecture is a key.challenge to improve patient care in various neurological diseases,to optimize neuroscientifically.informed strategies of postlesional rehabilitation,and ultimately.to develop innovative neuro-regenerative *** term‘plasticity.,initially.referring to the intrinsic propensity.of neurons to modulate their sy.aptic transmission in a learning situation,was progressively.transposed to brain injury.research and clinical ***,in the event of brain damage,adaptive mechanisms of compensation allow a partial reshaping of the structure and activities of the central nervous sy.tem,thus permitting to some extent the maintenance of brain functions.

关键词： plasticity figuration consequences