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Neuromorphic Computing in the Era of Large Models 认领 引用 被引量：1
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作者 Haoxuan SHAN Chiyue WEI +4 位作者 Nicolas RAMOS Xiaoxuan YANG Cong GUO HaiLI Yiran CHEN 《Artificial Intelligence Science and Engineering》 2025年第1期17-30,共14页
The rapid advancement of deep learning and the emergence of largescale neural models,such as bidirectional encoder representations from transformers(BERT),generative pre-trained transformer(GPT),and large language mod... The rapid advancement of deep learning and the emergence of largescale neural models,such as bidirectional encoder representations from transformers(BERT),generative pre-trained transformer(GPT),and large language model Meta AI(LLaMa),have brought significant computational and energy challenges.Neuromorphic computing presents a biologically inspired approach to addressing these issues,leveraging event-driven processing and in-memory computation for enhanced energy efficiency.This survey explores the intersection of neuromorphic computing and large-scale deep learning models,focusing on neuromorphic models,learning methods,and hardware.We highlight transferable techniques from deep learning to neuromorphic computing and examine the memoryrelated scalability limitations of current neuromorphic systems.Furthermore,we identify potential directions to enable neuromorphic systems to meet the growing demands of modern AI workloads. 展开更多
关键词 neuromorphic computing spiking neural networks large deep learning models
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A Survey of Accelerator Architectures for Deep Neural Networks 认领 引用 被引量：15
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作者 Yiran Chen Yuan Xie +2 位作者 Linghao Song Fan Chen Tianqi Tang 《Engineering》 SCIE EI CAS 2020年第3期264-274,共11页
Recently,due to the availability of big data and the rapid growth of computing power,artificial intelligence(AI)has regained tremendous attention and investment.Machine learning(ML)approaches have been successfully ap... Recently,due to the availability of big data and the rapid growth of computing power,artificial intelligence(AI)has regained tremendous attention and investment.Machine learning(ML)approaches have been successfully applied to solve many problems in academia and in industry.Although the explosion of big data applications is driving the development of ML,it also imposes severe challenges of data processing speed and scalability on conventional computer systems.Computing platforms that are dedicatedly designed for AI applications have been considered,ranging from a complement to von Neumann platforms to a“must-have”and stand-alone technical solution.These platforms,which belong to a larger category named“domain-specific computing,”focus on specific customization for AI.In this article,we focus on summarizing the recent advances in accelerator designs for deep neural networks(DNNs)-that is,DNN accelerators.We discuss various architectures that support DNN executions in terms of computing units,dataflow optimization,targeted network topologies,architectures on emerging technologies,and accelerators for emerging applications.We also provide our visions on the future trend of AI chip designs. 展开更多
关键词 Deep neural network Domain-specific architecture Accelerator
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Terahertz radiation of a butterfly-shaped photoconductive antenna(invited) 认领 引用 被引量：2
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作者 Jitao Zhang Mingguang Tuo +3 位作者 Min Liang Wei-Ren Ng Michael E.Gehm Hao Xin 《红外与激光工程》 EI CSCD 北大核心 2019年第4期9-17,共9页
The terahertz(THz) far-field radiation properties of a butterfly-shaped photoconductive antenna(PCA) were experimentally studied using a home-built THz time-domain spectroscopy(THz-TDS) setup.To distinguish the contri... The terahertz(THz) far-field radiation properties of a butterfly-shaped photoconductive antenna(PCA) were experimentally studied using a home-built THz time-domain spectroscopy(THz-TDS) setup.To distinguish the contribution of in-gap photocurrent and antenna structure to far-field radiation,polarization-dependent THz field was measured and quantified as the illuminating laser beam moved along the bias field within the gap region of electrodes. The result suggests that, although the far-field THz radiation originates from the in-gap photocurrent, the antenna structure of butterfly-shaped PCA dominates the overall THz radiation. In addition, to explore the impact of photoconductive material,radiation properties of butterfly-shaped PCAs fabricated on both low-temperature-grown GaAs(LT-GaAs) and semi-insulating GaAs(Si-GaAs) were characterized and compared. Consistent with previous experiments, it is observed that while Si-GaAs-based PCA can emit higher THz field than LT-GaAs-based PCA at low laser power, it would saturate more severely as laser power increased and eventually be surpassed by LT-GaAs-based PCA. Beyond that, it is found the severe saturation effect of Si-GaAs was due to the longer carrier lifetime and higher carrier mobility, which was confirmed by the numerical simulation. 展开更多
关键词 terahertz photoconductive antenna butterfly time domain spectroscopy
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Dual-band and high-isolation shared-aperture antenna for broadband airborne applications 认领 引用
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作者 Yuan Zhang Dong-Jun Wang +5 位作者 Chuan Wu Qiang-Ming Cai Run-Ren Zhang Rong-Qiang Li Peng Gao Yan-Wen Zhao 《Journal of Electronic Science and Technology》 EI CAS CSCD 2024年第4期9-18,共10页
A dual-band and high-isolation shared-aperture antenna for unmanned aerial vehicle(UAV)platforms has been proposed.This shared-aperture antenna consists of a rectangular monopole antenna and a 4-element multiple input... A dual-band and high-isolation shared-aperture antenna for unmanned aerial vehicle(UAV)platforms has been proposed.This shared-aperture antenna consists of a rectangular monopole antenna and a 4-element multiple input multiple output(MIMO)antenna.In order to increase the isolation,several double split ring metamaterial(MTM)structures are introduced between antenna elements.The antenna radiator and the MTM structure are located on the front and back of the same dielectric substrate,respectively,and are perpendicular to a circular metal plate.The overall size of the antenna substrate is 124 mm×38 mm×1.016 mm.Moreover,the antenna prototype is constructed and measured,and the simulated and measured results are in good agreement.The measured results show that the-10 dB bandwidth of the monopole antenna is 1.92 GHz to 2.75 GHz,and the common-6.0 dB bandwidth of the MIMO antenna element is 4.75 GHz to 4.91 GHz,covering 2.2 GHz to 2.4 GHz in the S-band and 4.8 GHz to 4.9 GHz in the 5G band,respectively.In the 5G band,the isolation between any element of the MIMO antenna and the S-band monopole antenna is not less than 21 dB,and the isolation between the MIMO antenna elements is better than 23 dB,indicating t-hat the isolation between the antenna elements is high.The proposed antenna is suitable for the application on UAV airborne platforms. 展开更多
关键词 Dual-band antenna High-isolation Monopole antenna Multiple input multiple output(MIMO) Shared-aperture Unmanned aerial vehicle(UAV)
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Modulational Instability of Optical Vortices in Engineered Saturable Media 认领 引用
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作者 D.G.Pires N.M.Litchinitser 《Engineering》 SCIE EI CAS CSCD 2022年第10期31-43,共13页
Propagation of light beams in turbid media such as underwater environments,fog,clouds,or biological tissues finds increasingly important applications in science and technology,including bio-imaging,underwater communic... Propagation of light beams in turbid media such as underwater environments,fog,clouds,or biological tissues finds increasingly important applications in science and technology,including bio-imaging,underwater communication,and free-space communication technologies.While many of these applications traditionally relied on conventional,linearly polarized Gaussian beams,light possesses many degrees of freedom that are still largely unexplored,such as spin angular momentum(SAM)and orbital angular momentum(OAM).Here,we present nonlinear light-matter interactions of such complex light beams with"rotational"degrees of freedom in engineered nonlinear colloidal media.By making use of both variational and perturbative approach,we consider non-cylindrical optical vortices,elliptical optical vortices,and higher-order Bessel beams integrated in time(HOBBIT)to predict the dynamics and stability of the evolution of these beams.These results may find applications in many scenarios involving light transmission in strongly scattering environments. 展开更多
关键词 Optical vortex Orbital angular momentum Modulation instability Turbid media
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DOA and Power Estimation Using Genetic Algorithm and Fuzzy Discrete Particle Swarm Optimization 认领 引用 被引量：3
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作者 Jia-Zhou Liu Zhi-Qin Zhao +1 位作者 Zi-Yuan He Qing-Huo Liu 《Journal of Electronic Science and Technology》 CAS 2014年第1期71-75,共5页
Aiming to reduce the computational costs and converge to global optimum, a novel method is proposed to solve the optimization of a cost function in the estimation of direction of arrival （DOA）. In this method, a gen... Aiming to reduce the computational costs and converge to global optimum, a novel method is proposed to solve the optimization of a cost function in the estimation of direction of arrival （DOA）. In this method, a genetic algorithm （GA） and fuzzy discrete particle swarm optimization （FDPSO） are applied to optimize the direction of arrival and power parameters of the mode simultaneously. Firstly, the GA algorithm is applied to make the solution fall into the global searching. Secondly, the FDPSO method is utilized to narrow down the search field. In FDPSO, a chaotic factor and a crossover method are added to speed up the convergence. This approach has been demonstrated through some computational simulations. It is shown that the proposed algorithm can estimate both the DOA and the powers accurately. It is more efficient than some present methods, such as the Newton-like algorithm, Akaike information critical （AIC）, particle swarm optimization （PSO）, and genetic algorithm with particle swarm optimization （GA-PSO）. 展开更多
关键词 Direction of arrival genetic algorithm,particle swarm optimization.
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Visualization of gold nanoparticles formation in DC plasma-liquid systems 认领 引用 被引量：1
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作者 Zhaoyuan LIU Qiang CHEN +1 位作者 Qinghuo LIU KostyaOSTRIKOV 《Plasma Science and Technology》 SCIE EI CAS CSCD 2021年第7期144-152,共9页
Dual argon plasmas ignited by one direct current power source are used to treat an aqueous solution of hydrogen tetrachloroaurate-(Ⅲ)trihydrate(HAuCl4·3H2O)which is contained in an H-type electrochemical c... Dual argon plasmas ignited by one direct current power source are used to treat an aqueous solution of hydrogen tetrachloroaurate-(Ⅲ)trihydrate(HAuCl4·3H2O)which is contained in an H-type electrochemical cell.The solution contained in one cell acts as a cathode,and in the other as an anode.Experiments are carried out to directly visualize the formation process of gold nanoparticles(Au NPs)in separated cells of the H-type electrochemical reactor.The results and analyzes suggest that hydrogen peroxide and hydrated electrons generated from the plasma-liquid interactions play the roles of reductants in the solutions,respectively.Hydrogen peroxide can be generated in the case of the liquid being a cathode or an anode,while most of hydrated electrons are formed in the case of the liquid being an anode.Therefore,the reduction of the AuCl4−ions is mostly attributed to the hydrogen peroxide as the liquid acts as a cathode,while to the hydrogen peroxide and hydrated electrons as the liquid acts as an anode.Moreover,the p H value of the solution can be used to tune the formation processes and final form of the Au NPs due to its mediation of reductants. 展开更多
关键词 dual plasma gold nanoparticles hydrogen peroxide hydrated electron H-type electrochemical cell
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Evaluation of a deep learning supported remote diagnosis model for identification of diabetic retinopathy using wide-field Optomap 认领 引用
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作者 Terry Lee Mingzhe Hu +7 位作者 Qitong Gao Joshua Amason Durga Borkar David D’Alessio Michael Canos Afreen Shariff Miroslav Pajic Majda Hadziahmetovic 《Annals of Eye Science》 2022年第2期93-104,共12页
Background:We test a deep learning(DL)supported remote diagnosis approach to detect diabetic retinopathy(DR)and other referable retinal pathologies using ultra-wide-field(UWF)Optomap.Methods:Prospective,non-randomized... Background:We test a deep learning(DL)supported remote diagnosis approach to detect diabetic retinopathy(DR)and other referable retinal pathologies using ultra-wide-field(UWF)Optomap.Methods:Prospective,non-randomized study involving diabetic patients seen at endocrinology clinics.Non-expert imagers were trained to obtain non-dilated images using UWF Primary.Images were graded by two retina specialists and classified as DR or incidental retinal findings.Cohen’s kappa was used to test the agreement between the remote diagnosis and the gold standard exam.A novel DL model was trained to identify the presence or absence of referable pathology,and sensitivity,specificity and area under the receiver operator characteristics curve(AUROC)were used to assess its performance.Results:A total of 265 patients were enrolled,of which 241 patients were imaged(433 eyes).The mean age was 50±17 years,45%of patients were female,34%had a diagnosis of diabetes mellitus type 1,and 66%of type 2.The average Hemoglobin A1c was 8.8±2.3%,and 81%were on Insulin.Of the 433 images,404(93%)were gradable,64 patients(27%)were referred to a retina specialist,and 46(19%)were referred to comprehensive ophthalmologist for a referable retinal pathology on remote diagnosis.Cohen’s kappa was 0.58,indicating moderate agreement.Our DL algorithm achieved an accuracy of 82.8%(95%CI:80.3-85.2%),a sensitivity of 81.0%(95%CI:78.5-83.6%),specificity of 73.5%(95%CI:70.6-76.3%),and AUROC of 81.0%(95%CI:78.5-83.6%).Conclusions:UWF Primary can be used in the non-ophthalmology setting to screen for referable retinal pathology and can be successfully supported by an automated algorithm for image classification. 展开更多
关键词 Retina screening imaging deep learning(DL) diabetic retinopathy(DR)
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Orthogonal matrix of polarization combinations:concept and application to multichannel holographic recording 认领 引用 被引量：4
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作者 Shujun Zheng Jiaren Tan +4 位作者 Hongjie Liu Xiao Lin Yusuke Saita Takanori Nomura Xiaodi Tan 《Opto-Electronic Advances》 SCIE EI CAS CSCD 2024年第10期4-13,共10页
Orthogonal matrices have become a vital means for coding and signal processing owing to their unique distributional properties.Although orthogonal matrices based on amplitude or phase combinations have been extensivel... Orthogonal matrices have become a vital means for coding and signal processing owing to their unique distributional properties.Although orthogonal matrices based on amplitude or phase combinations have been extensively explored,the orthogonal matrix of polarization combinations(OMPC)is a novel,relatively unexplored concept.Herein,we propose a method for constructing OMPCs of any dimension encompassing 4n(where n is 1,2,4,8,…)mutually orthogonal 2ncomponent polarization combinations.In the field of holography,the integration of polarization multiplexing techniques with polarization-sensitive materials is expected to emerge as a groundbreaking approach for multichannel hologram multiplexing,offering considerable enhancements in data storage capacity and security.A multidimensional OMPC enables the realization of multichannel multiplexing and dynamical modulation of information in polarization holographic recording.Despite consolidating all information into a single position within the material,we effectively avoided extraneous crosstalk during the reconstruction process.Our results show that achieving four distinct holographic images individually and simultaneously depends on the polarization combination represented by the incident wave.This discovery opens up a new avenue for achieving highly holographic information storage and dynamically displayed information,harnessing the potential of OMPC to expand the heretofore limited dimensionality of orthogonal polarization. 展开更多
关键词 orthogonal matrix of polarization combinations polarization-modulated multiplexing multichannel recording polarization holography dynamical information modulation
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δ-Calculus:A New Approach to Quantifying Location Privacy 认领 引用 被引量：1
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作者 Lihua Yin Ran Li +4 位作者 Jingquan Ding Xiao Li Yunchuan Guo Huibing Zhang Ang Li 《Computers, Materials & Continua》 SCIE EI 2020年第6期1323-1342,共20页
With the rapid development of mobile wireless Internet and high-precision localization devices,location-based services(LBS)bring more convenience for people over recent years.In LBS,if the original location data are d... With the rapid development of mobile wireless Internet and high-precision localization devices,location-based services(LBS)bring more convenience for people over recent years.In LBS,if the original location data are directly provided,serious privacy problems raise.As a response to these problems,a large number of location-privacy protection mechanisms(LPPMs)(including formal LPPMs,FLPPMs,etc.)and their evaluation metrics have been proposed to prevent personal location information from being leakage and quantify privacy leakage.However,existing schemes independently consider FLPPMs and evaluation metrics,without synergizing them into a unifying framework.In this paper,a unified model is proposed to synergize FLPPMs and evaluation metrics.In detail,the probabilistic process calculus(calledδ-calculus)is proposed to characterize obfuscation schemes(which is a LPPM)and integrateα-entropy toδ-calculus to evaluate its privacy leakage.Further,we use two calculus moving and probabilistic choice to model nodes’mobility and compute its probability distribution of nodes’locations,and a renaming function to model privacy leakage.By formally defining the attacker’s ability and extending relative entropy,an evaluation algorithm is proposed to quantify the leakage of location privacy.Finally,a series of examples are designed to demonstrate the efficiency of our proposed approach. 展开更多
关键词 Location privacy δ-calculus relative entropy
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A Recommendation Method for Highly Sparse Dataset Based on Teaching Recommendation Factorization Machines 认领 引用
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作者 Dunhong Yao Shijun Li +1 位作者 Ang Li Yu Chen 《Computers, Materials & Continua》 SCIE EI 2020年第9期1959-1975,共17页
There is no reasonable scientific basis for selecting the excellent teachers of the school’s courses.To solve the practical problem,we firstly give a series of normalization models for defining the key attributes of ... There is no reasonable scientific basis for selecting the excellent teachers of the school’s courses.To solve the practical problem,we firstly give a series of normalization models for defining the key attributes of teachers’professional foundation,course difficulty coefficient,and comprehensive evaluation of teaching.Then,we define a partial weight function to calculate the key attributes,and obtain the partial recommendation values.Next,we construct a highly sparse Teaching Recommendation Factorization Machines(TRFMs)model,which takes the 5-tuples relation including teacher,course,teachers’professional foundation,course difficulty,teaching evaluation as the feature vector,and take partial recommendation value as the recommendation label.Finally,we design a novel Top-N excellent teacher recommendation algorithm based on TRFMs by course classification on the highly sparse dataset.Experimental results show that the proposed TRFMs and recommendation algorithm can accurately realize the recommendation of excellent teachers on a highly sparse historical teaching dataset.The recommendation accuracy is superior to that of the three-dimensional tensor decomposition model algorithm which also solves sparse datasets.The proposed method can be used as a new recommendation method applied to the teaching arrangements in all kinds of schools,which can effectively improve the teaching quality. 展开更多
关键词 Highly sparse dataset normalized models teaching recommendation factorization machines excellent teacher recommendation
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Transmission, reflection, scattering, and trapping of traveling discrete solitons by C and V point defects 认领 引用 被引量：4
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作者 Jin-Hong Huang Hong-Ji Li +1 位作者 Xiang-Yu Zhang Yong-Yao Li 《Frontiers of physics》 SCIE CSCD 2015年第2期97-103,共7页
We study the interactions of moving discrete solitons in waveguide arrays with two types of point defects that are constructed by varying either the local linear coupling or local waveguide propagation constant at the... We study the interactions of moving discrete solitons in waveguide arrays with two types of point defects that are constructed by varying either the local linear coupling or local waveguide propagation constant at the center of the waveguide array. A broad discrete soliton is kicked toward the defect and interacts with it. Transmission, reflection, scattering, and trapping during the interaction between the soliton and the defect occur depending on the parameters. The detailed behavior of the soliton dynamics is analyzed numerically. A transmission window in the parameter domain is found and the behavior of this window for different parameters is studied. The dynamics of the soliton in the transmission window is found to have chaotic features under certain circumstances and the causes of these phenomena are identified and discussed. 展开更多
关键词 traveling discrete soliton waveguide arrays C-defect and V-defect
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Multiple resonant excitations of surface plasmons in a graphene stratified slab by Otto configuration and their independent tuning 认领 引用 被引量：1
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作者 JIN YAO YING CHEN +3 位作者 LONGFANG YE NA LIU GUOXIONG CAI QING HUO LIU 《Photonics Research》 SCIE EI CAS 2017年第4期377-384,共8页
Multiple resonant excitations of surface plasmons in a graphene stratified slab are realized by Otto configuration at terahertz frequencies. The proposed graphene stratified slab consists of alternating dielectric lay... Multiple resonant excitations of surface plasmons in a graphene stratified slab are realized by Otto configuration at terahertz frequencies. The proposed graphene stratified slab consists of alternating dielectric layers and graphene sheets, and is sandwiched between a prism and another semi-infinite medium. Optical response and field distribution are determined by the transfer matrix method with the surface current density boundary condition.Multiple resonant excitations appear on the angular reflection spectrum, and are analyzed theoretically via the phase-matching condition. Furthermore, the effects of the system parameters are investigated. Among them, the Fermi levels can tune the corresponding resonances independently. The proposed concept can be engineered for promising applications, including angular selective or multiplex filters, multiple channel sensors, and directional delivery of energy. 展开更多
关键词 mode Multiple resonant excitations of surface plasmons in a graphene stratified slab by Otto configuration and their independent tuning EFB EFA GSP
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Sculpting isolated optical vortex knots on demand 认领 引用
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作者 DMITRII TSVETKOV DANILO G.PIRES +1 位作者 HOOMAN BARATI SEDEH NATALIA M.LITCHINITSER 《Photonics Research》 SCIE EI CAS CSCD 2025年第2期527-540,共14页
The rapid development of optical technologies,including optical trapping,enhanced imaging,and microscopy,necessitates fundamentally new approaches to higher-dimensional optical beam shaping.We introduce a rigorous the... The rapid development of optical technologies,including optical trapping,enhanced imaging,and microscopy,necessitates fundamentally new approaches to higher-dimensional optical beam shaping.We introduce a rigorous theoretical approach for sculpting three-dimensional,topological particle-like objects,such as optical knots or links,including precise control of their individual parts.Universally applicable to knots created using braided zero lines,our method is validated through theoretical analysis and experimental measurements.The proposed approach enables new degrees of freedom in multi-dimensional singularities shaping,including rotations,shifts,and rescaling of their parts for enhanced stability in complex media.These results may find applications in the fields of three-dimensional optical trapping,manipulation,and subwavelength microscopy,as well as probing and imaging through atmospheric or underwater turbulence. 展开更多
关键词 microscopy optical vortex knots braided zero linesour precise control their individual partsuniversally optical knots optical trapping enhanced imaging theoretical analysis
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Portable multiclass lateral flow assay for dry eye disease based on machine learning and smartphone imaging 认领 引用
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作者 Sixuan Duan Ziren Xiao +4 位作者 Jihong Sun Letian Hu Kaizhu Huang Kai Hoettges Pengfei Song 《Biomedical Instrumentation》 2025年第2期29-37,共9页
Dry eye disease(DED)is a widespread ocular surface disorder that requires early and accurate diagnostics for effective management.Among various biomarkers,matrix metalloproteinase-9(MMP-9)has been validated as a relia... Dry eye disease(DED)is a widespread ocular surface disorder that requires early and accurate diagnostics for effective management.Among various biomarkers,matrix metalloproteinase-9(MMP-9)has been validated as a reliable indicator of ocular inflammation.However,current lateral flow assays(LFAs),provide only binary outcomes,which limits their ability to stratify disease severity and guide personalized treatment.More advanced and accessible diagnostic strategies are needed to address this gap.This paper presents a portable smartphone-based platform that integrates machine learning(ML)with LFAs for multiclass detection of tear MMP-9.Customized LFA strips were developed to detect six different concentrations of MMP-9.Images were captured using six smartphones under four distinct backgrounds,generating a dataset of 864 images.The segment anything model(SAM)was applied for strip segmentation,achieving 100%accuracy across all samples.ResNet34 and MobileNet_V2 ML model,pre-trained on ImageNet,were used for classification and achieved accuracies of 99%and over 97%,respectively.The results demonstrate that ML-assisted smartphone imaging enables reliable multiclass detection,overcoming the limitations of conventional binary LFA assays.This approach addresses variability across devices and environments,eliminates the need for external readers,and provides a practical,low-cost solution for DED diagnosis.More broadly,the framework can be extended to other LFA-based assays,supporting scalable point-of-care testing(POCT)in resource-limited settings. 展开更多
关键词 Dry eye disease Matrix Metalloproteinase-9 Lateral flow assay Machine learning Smartphone
Bridging meta-optics to quantum-optics:manipulating nonclassical light with structured materials[Invited] 认领 引用 被引量：1
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作者 HOOMAN BARATI SEDEH NATALIA M.LITCHINITSER 《Photonics Research》 SCIE EI CAS CSCD 2026年第3期I0006-I0039,共34页
Recent progress in meta-optics,particularly the development of metasurfaces,has enabled compact,tunable,and integrable control over the amplitude,phase,polarization,and wavefront of light,thereby allowing a paradigm s... Recent progress in meta-optics,particularly the development of metasurfaces,has enabled compact,tunable,and integrable control over the amplitude,phase,polarization,and wavefront of light,thereby allowing a paradigm shift in traditional optical science and engineering.In parallel,the ability to generate and precisely manipulate nonclassical light is central to quantum optics,enabling key functionalities in secure quantum communication,precision measurement,and scalable quantum computation.This review aims to bridge these two rapidly advancing fields by presenting recent progress in the application of structured materials to the manipulation of quantum states of light. 展开更多
关键词 structured materials quantum optics quantum opticsenabling nonclassical light quantum computationthis metasurfaces paradigm shift meta optics
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Reinforcement Learning for Dynamic and Predictive CPU Resource Management in Cloud Computing 认领 引用
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作者 Yihan Wang Suchuan Xing 《Journal of Data Analysis and Information Processing》 2025年第3期255-268,共14页
As cloud computing continues to evolve,managing CPU resources effectively has become a critical task for ensuring system performance and efficiency.Traditional CPU resource management methods,such as static allocation... As cloud computing continues to evolve,managing CPU resources effectively has become a critical task for ensuring system performance and efficiency.Traditional CPU resource management methods,such as static allocation and manual optimization,are increasingly inadequate in handling dynamic,fluctuating workloads characteristic of modern cloud environments.This paper explores the use of Reinforcement Learning(RL)for adaptive CPU resource management,offering a dynamic,data-driven approach to optimizing resource allocation in real-time.Reinforcement learning,particularly Q-learning and Deep Q Networks(DQNs),enables cloud systems to autonomously adjust CPU resources based on workload demands,improving system efficiency and minimizing resource wastage.This paper discusses the key principles of reinforcement learning,its applications in CPU resource management,the benefits of its implementation,and the challenges that need to be addressed for broader adoption.Finally,the paper highlights future directions for integrating RL with other machine learning techniques and its potential impact on cloud infrastructure optimization. 展开更多
关键词 Reinforcement Learning CPU Resource Management Adaptive Systems Cloud Computing Resource Allocation Machine Learning Dynamic Resource Management AI Automation Virtualization
Hybrid graphene metasurfaces for highspeed mid-infrared light modulation and single-pixel imaging 认领 引用 被引量：38
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作者 Beibei Zeng Zhiqin Huang +6 位作者 Akhilesh Singh Yu Yao Abul K.Azad Aditya D.Mohite Antoinette J.Taylor David R.Smith Hou-Tong Chen 《Light: Science & Applications》 SCIE EI CSCD 2018年第1期524-531,共8页
During the past decades,major advances have been made in both the generation and detection of infrared light;however,its efficient wavefront manipulation and information processing still encounter great challenges.Eff... During the past decades,major advances have been made in both the generation and detection of infrared light;however,its efficient wavefront manipulation and information processing still encounter great challenges.Efficient and fast optoelectronic modulators and spatial light modulators are required for mid-infrared imaging,sensing,security screening,communication and navigation,to name a few.However,their development remains elusive,and prevailing methods reported so far have suffered from drawbacks that significantly limit their practical applications.In this study,by leveraging graphene and metasurfaces,we demonstrate a high-performance free-space mid-infrared modulator operating at gigahertz speeds,low gate voltage and room temperature.We further pixelate the hybrid graphene metasurface to form a prototype spatial light modulator for high frame rate single-pixel imaging,suggesting orders of magnitude improvement over conventional liquid crystal or micromirror-based spatial light modulators.This work opens up the possibility of exploring wavefront engineering for infrared technologies for which fast temporal and spatial modulations are indispensable. 展开更多
关键词 modulator light prevailing
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Aerosol jet printing of surface acoustic wave microfluidic devices 认领 引用 被引量：5
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作者 Joseph Rich Brian Cole +12 位作者 Teng Li Brandon Lu Hanyu Fu Brittany N.Smith Jianping Xia Shujie Yang Ruoyu Zhong James L.Doherty Kanji Kaneko Hiroaki Suzuki Zhenhua Tian Aaron D.Franklin Tony Jun Huang 《Microsystems & Nanoengineering》 SCIE EI CSCD 2024年第1期231-242,共12页
The addition of surface acoustic wave(SAW)technologies to microfluidics has greatly advanced lab-on-a-chip applications due to their unique and powerful attributes,including high-precision manipulation,versatility,int... The addition of surface acoustic wave(SAW)technologies to microfluidics has greatly advanced lab-on-a-chip applications due to their unique and powerful attributes,including high-precision manipulation,versatility,integrability,biocompatibility,contactless nature,and rapid actuation.However,the development of SAW microfluidic devices is limited by complex and time-consuming microanofabrication techniques and access to cleanroom facilities for multistep photolithography and vacuum-based processing.To simplify the fabrication of SAW microfluidic devices with customizable dimensions and functions,we utilized the additive manufacturing technique of aerosol jet printing.We successfully fabricated customized SAW microfluidic devices of varying materials,including silver nanowires,graphene,and poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS).To characterize and compare the acoustic actuation performance of these aerosol jet printed SAW microfluidic devices with their cleanroom-fabricated counterparts,the wave displacements and resonant frequencies of the different fabricated devices were directly measured through scanning laser Doppler vibrometry.Finally,to exhibit the capability of the aerosol jet printed devices for lab-on-a-chip applications,we successfully conducted acoustic streaming and particle concentration experiments.Overall,we demonstrated a novel solution-based,direct-write,single-step,cleanroom-free additive manufacturing technique to rapidly develop SAW microfluidic devices that shows viability for applications in the fields of biology,chemistry,engineering,and medicine. 展开更多
关键词 printing wave fluid
Broadband continuous supersymmetric transformation:a new paradigm for transformation optics 认领 引用 被引量：6
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作者 Jieun Yim Nitish Chandra +6 位作者 Xilin Feng Zihe Gao Shuang Wu Tianwei Wu Haoqi Zhao Natalia M.Litchinitser Liang Feng 《eLight》 2022年第1期203-212,共10页
Transformation optics has formulated a versatile framework to mold the flow of light and tailor its spatial characteristics at will.Despite its huge success in bringing scientific fiction(such as invisibility cloaking... Transformation optics has formulated a versatile framework to mold the flow of light and tailor its spatial characteristics at will.Despite its huge success in bringing scientific fiction(such as invisibility cloaking)into reality,the coordinate transformation often yields extreme material parameters unfeasible even with metamaterials.Here,we demonstrate a new transformation paradigm based upon the invariance of the eigenspectra of the Hamiltonian of a physical system,enabled by supersymmetry.By creating a gradient-index metamaterial to control the local index variation in a family of isospectral optical potentials,we demonstrate broadband continuous supersymmetric transformation in optics,on a silicon chip,to simultaneously transform the transverse spatial characteristics of multiple optical states for arbitrary steering and switching of light flows.Through a novel synergy of symmetry physics and metamaterials,our work provides an adaptable strategy to conveniently tame the flow of light with full exploitation of its spatial degree of freedom. 展开更多
关键词 Supersymmetry Transformation optics Metamaterials Integrated photonics
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