In this paper, we develop a novel mobility-aware transformer-driven tiered structure (MASSFormer) based co-operative spectrum sensing method that effectively models the spatio-temporal dynamics of user movements. Unli...
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Quantum federated learning(QFL)enables collaborative training of a quantum machine learning(QML)model among multiple clients possessing quantum computing capabilities,without the need to share their respective local *...
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Quantum federated learning(QFL)enables collaborative training of a quantum machine learning(QML)model among multiple clients possessing quantum computing capabilities,without the need to share their respective local ***,the limited availability of quantum computing resources poses a challenge for each client to acquire quantum computing *** raises a natural question:Can quantum computing capabilities be deployed on the server instead?In this paper,we propose a QFL framework specifically designed for classical clients,referred to as CC-QFL,in response to this *** each iteration,the collaborative training of the QML model is assisted by the shadow tomography technique,eliminating the need for quantum computing capabilities of ***,the server constructs a classical representation of the QML model and transmits it to the *** clients encode their local data onto observables and use this classical representation to calculate local *** local gradients are then utilized to update the parameters of the QML *** evaluate the effectiveness of our framework through extensive numerical simulations using handwritten digit images from the MNIST *** framework provides valuable insights into QFL,particularly in scenarios where quantum computing resources are scarce.
This study presents the potential of Mie scattering-based light trapping for enhancing the performance of perovskite solar cells by using spherical nanostructure. Utilizing the Lumerical FDTD simulations, investigatio...
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The compressed code of Absolute Moment Block Truncation Coding (AMBTC) consists of quantized values (QVs) and bitmaps. The QVs exhibit greater predictability, and the bitmaps themselves carry more randomness. While ex...
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Unconstrained face images are interfered by many factors such as illumination,posture,expression,occlusion,age,accessories and so on,resulting in the randomness of the noise pollution implied in the original *** order...
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Unconstrained face images are interfered by many factors such as illumination,posture,expression,occlusion,age,accessories and so on,resulting in the randomness of the noise pollution implied in the original *** order to improve the sample quality,a weighted block cooperative sparse representation algorithm is proposed based on visual saliency ***,the algorithm uses the biological visual attention mechanism to quickly and accurately obtain the face salient target and constructs the visual salient ***,a block cooperation framework is presented to perform sparse coding for different local structures of human face,and the weighted regular term is introduced in the sparse representation process to enhance the identification of information hidden in the coding ***,by synthesising the sparse representation results of all visual salient block dictionaries,the global coding residual is obtained and the class label is *** experimental results on four databases,that is,AR,extended Yale B,LFW and PubFig,indicate that the combination of visual saliency dictionary,block cooperative sparse representation and weighted constraint coding can effectively enhance the accuracy of sparse representation of the samples to be tested and improve the performance of unconstrained face recognition.
Resolving three-dimensional morphological features in thick specimens remains a significant challenge for label-free *** report a new speckle diffraction tomography(SDT)approach that can image thick biological specime...
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Resolving three-dimensional morphological features in thick specimens remains a significant challenge for label-free *** report a new speckle diffraction tomography(SDT)approach that can image thick biological specimens with~500 nm lateral resolution and~1μm axial resolution in a reflection *** SDT,multiple-scattering background is rejected through spatiotemporal gating provided by dynamic speckle-field interferometry,while depth-resolved refractive index maps are reconstructed by developing a comprehensive inverse-scattering model that also considers specimen-induced *** from the high-resolution and full-field quantitative imaging capabilities of SDT,we successfully imaged red blood cells and quantified their membrane fluctuations behind a turbid medium with a thickness of 2.8 scattering mean-free *** importantly,we performed volumetric imaging of cornea inside an ex vivo rat eye and quantified its optical properties,including the mapping of nanoscale topographic features of Dua’s and Descemet’s membranes that had not been previously visualized.
In the era of rapid development of artificial intelligence technologies, traditional teaching models are unable to meet the employment needs of enterprises, and talent cultivation in universities faces more challenges...
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High-strength steel materials (steel grades of S500 - S960) gaining prominence in civil engineering, especially for large-span bridges. In the case of bridges, the application of hybrid girders combining low- and high...
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Battery capacity assessment is a crucial research direction in the field of lithium-ion battery *** the previous research,a novel data-driven state of health(SOH)estimation method based on the voltage relaxation curve...
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Battery capacity assessment is a crucial research direction in the field of lithium-ion battery *** the previous research,a novel data-driven state of health(SOH)estimation method based on the voltage relaxation curve at full charging is *** experimental results have shown the evidence of the superiority of accurate battery SOH estimation based on physical features derived from equivalent circuit models(ECMs).However,the earlier research has limitations in estimating battery capacity with a diversity of battery charging states of *** study represents an extension of the previous work,aiming to investigate the feasibility of this technology for battery degradation evaluation under various charging states so that the application capability in practice is *** this study,six ECM features are extracted from 10-min voltage relaxation data across varying charging states to characterize the battery degradation *** process regression(GPR)is employed to learn the relationship between the physical features and battery *** results under 10 different state of charge(SOC)ranges show that the developed methodology predicts accurate battery SOH,with a root mean square error being 0.9%.
Optical materials capable of dynamically manipulating electromagnetic waves are an emerging field in memories,optical modulators,and thermal ***,their multispectral design preliminarily attracts much attention,aiming ...
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Optical materials capable of dynamically manipulating electromagnetic waves are an emerging field in memories,optical modulators,and thermal ***,their multispectral design preliminarily attracts much attention,aiming to enhance their efficiency and integration of ***,the multispectral manipulation based on these materials is challenging due to their ubiquitous wavelength dependence restricting their capacity to narrow *** this article,we cascade multiple tunable optical cavities with selective-transparent layers,enabling a universal approach to overcoming wavelength dependence and establishing a multispectral platform with highly integrated *** on it,we demonstrate the multispectral(ranging from 400 nm to 3 cm),fast response speed(0.9 s),and reversible manipulation based on a typical phase change material,vanadium *** platform involves tandem VO_(2)-based Fabry–Pérot(F-P)cavities enabling the customization of optical responses at target bands *** can achieve broadband color-changing capacity in the visible region(a shift of~60 nm in resonant wavelength)and is capable of freely switching between three typical optical models(transmittance,reflectance,and absorptance)in the infrared to microwave regions with drastic amplitude tunability exceeding *** work represents a state-of-art advance in multispectral optics and material science,providing a critical approach for expanding the multispectral manipulation ability of optical systems.
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