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Machine Learning Model for Wind Power Forecasting Using Enhanced Multilayer Perceptron

computers, Materials & Continua 2025年第5期83卷 2287-2303页

作者： Ahmed A.Ewees Mohammed A.A.Al-Qaness Ali Alshahrani Mohamed Abd Elaziz Computer Science and Artificial Intelligence Department College of Computing and Information TechnologyUniversity of BishaBisha61922Saudi Arabia Department of Computer Damietta UniversityDamietta34517Egypt College of Physics and Electronic Information Engineering Zhejiang Normal UniversityJinhua321004China Department of Mathematics Faculty of ScienceZagazig UniversityZagazig44519Egypt

Wind power forecasting plays a crucial role in optimizing the integration of wind energy into the grid by predicting wind patterns and energy *** enhances the efficiency and reliability of renewable energy *** approaches inform energy management strategies,reduce reliance on fossil fuels,and support the broader transition to sustainable energy *** primary goal of this study is to introduce an effective methodology for estimating wind power through temporal data *** research advances an optimized Multilayer Perceptron(MLP)model using recently proposedmetaheuristic optimization algorithms,namely the FireHawk Optimizer(FHO)and the Non-Monopolize Search(NO).A modified version of FHO,termed FHONO,is developed by integrating NO as a local search mechanism to enhance the exploration capability and address the shortcomings of the original *** developed FHONO is then employed to optimize the MLP for enhanced wind power *** effectiveness of the proposed FHONO-MLP model is validated using renowned datasets from wind turbines in *** results of the comparative analysis between FHONO-MLP,conventionalMLP,and other optimized versions of MLP show that FHONO-MLP outperforms the others,achieving an average RootMean Square Error(RMSE)of 0.105,Mean Absolute Error(MAE)of 0.082,and Coefficient of Determination(R^(2))of 0.967 across all *** findings underscore the significant enhancement in predictive accuracy provided by FHONO and demonstrate its effectiveness in improving wind power forecasting.

关键词： Wind power forecasting multilayer perceptron fire hawk optimizer non-monopolize search

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Text Classification Accuracy Enhancement Using Deep Neural Networks

Text Classification Accuracy Enhancement Using Deep Neural N...

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2023 Al-Sadiq International Conference on Communication and Information technology, AICCIT 2023

作者： Najm, Mobajjal Kadhim Aljumaily, Mustafa S. Al-Khaleefa, Ahmed Ayal, A.M. Mohammed, Dheyaa Abdulameer Challoob, Aqeel Luaibi Shahid Chamran University of Ahvaz Faculty of Engineering Computer Engineering Department Ahvaz Iran University of Tennessee Electrical Engineering and Computer Science Department Tennessee United States University of Misan Faculty of Education Department of Physics Maysan Iraq University of Misan Maysan Iraq Imam Ja'afar Al-Sadiq University College of Information Technology Department of Computer Technical Engineering Al-Muthanna Iraq Department of Computer Techniques Engineering1 Baghdad Iraq

ISBN: (纸本)9798350341881

Machine-learning systems are part of the field of artificial intelligence that automatically learn models from data to make better decisions. Natural language processing (NLP), using object and learning approaches, performs well in statistical tasks, such as text classification or sentiment mining. Currently, in the field of natural language processing (NLP), various models, methods, and architectures have been proposed and a wide range of NLP tasks have been developed. Most natural language processing (NLP) problems can be formulated as classification problems (decide on the class of this object depending on the object and its context). In this field, machine learning methods and especially using neural network models are the most used. In this research, we propose a deep learning architecture for text classification that can influence model performance. The basic steps of this proposed method include text pre-processing (including sentence segmentation, punctuation, rooting, speech tagging, and vector conversion), text feature extraction, and LSTM algorithm-based classification model construction. The dataset used in this study is 20NewsGroup and IMDB. The evaluation results are provided in the form of MSE, Precision, Recall, Accuracy, and F-Measure evaluation criteria. © 2023 IEEE.

关键词： Neural network models

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Chromatic Aberration Detection Using Fully Convolutional Networks 17th

Chromatic Aberration Detection Using Fully Convolutional Net...

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17th Asian Conference on Intelligent Information and Database Systems, ACIIDS 2025

作者： Bernacki, Jaroslaw Scherer, Rafal Department of Artificial Intelligence Czȩstochowa University of Technology al. Armii Krajowej 36 Czȩstochowa42-200 Poland Faculty of Computer Science AGH University of Krakow Kraków Poland

ISBN: (纸本)9789819660070

Chromatic aberration is a common optical distortion in digital imaging that manifests as color fringing along edges in photographs, impacting image quality and visual perception. Traditional methods for detecting chromatic aberration rely on handcrafted features and image processing techniques, which often struggle with complex scenes or varied lighting conditions. In this paper, we propose a novel approach using fully convolutional networks (FCNs) to automatically detect chromatic aberration in digital images. The deep learning model is trained, allowing it to learn and adapt to the complex patterns associated with chromatic aberration. We evaluated the performance of the proposed method on a representative dataset of images with chromatic aberration and found that the FCN-based achieves similar identification accuracy as state-of-the-art methods, but is much faster. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Convolutional neural networks

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Multispectral Polarization-Insensitive Graphene/Silicon Guided Mode Resonance Active Metasurfaces

arXiv

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arXiv 2024年

作者： Sharma, Prateeksha Oz, Dor Lampadariou, Eleftheria Doukas, Spyros Lidorikis, Elefterios Goykhman, Ilya Faculty of Electrical and Computer Engineering Technion Haifa320000 Israel Institute of Applied Physics The Faculty of Science The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem91904 Israel Department of Materials Science and Engineering University of Ioannina Ioannina45110 Greece

We investigate advanced CMOS-compatible Graphene/Silicon active metasurfaces based on guided-mode resonance filters. The simulated results show a high extinction ratio (>25 dB), narrow linewidth (~1.5 nm @1550 nm), quality factor of Q~1000, and polarization-insensitive operation. By taking advantage of graphene broadband absorption, we present a multispectral operation in the MIR using simple geometrical scaling rules. We further showcase that the same device architecture can be employed for thermo-optic tuning using graphene as an integrated microheater. Our work contributes to the development of advanced broadband silicon-based active metasurfaces for tunable spectral filters and laser mirrors, optical switches, modulators, and sensors. Copyright © 2024, The Authors. All rights reserved.

关键词： Laser mirrors

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Miniaturization of Dimensions Based on Square Loop Resonator with NP Fractal Model for Sensor Applications

Miniaturization of Dimensions Based on Square Loop Resonator...

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International Electrical Engineering Congress (iEECON)

作者： Nutyada Nantapanich Norakamon Wongsin Nipont Tangthong Chawalit Rakluea Paitoon Rakluea Wanchalerm Chanwattanapong Nonchanutt Chudpooti Chatree Mahatthanajatuphat Department of Electronics and Telecommunication Engineering Faculty of Engineering Rajamangala University of Technology Thanyaburi Thailand Department of Industrial Physics and Medical Instrumentation Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Electrical and Computer Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

ISBN: (数字)9798331543952

ISBN: (纸本)9798331543969

This paper proposes a reduction in the dimensions of a square loop resonator via the utilization of fractal techniques. The 2 nd order NP fractal model is investigated to minimize the dimensions of the square loop resonator. The suggested fractal resonator is indirectly fed via the coupling line encircling the resonator to enhance impedance matching. The suggested fractal resonator has a frequency response of 2.936 GHz, with |S11| and |S21| evaluated at -16.17 dB and -2.09 dB, respectively. The dimensions of the suggested fractal resonator are 10.5×10.5 mm 2 , representing a reduction of roughly 56.9% compared to the square loop resonator. Consequently, the suggested fractal resonator may serve as a sensor for the measuring instrument.

关键词： Electrical engineering Couplings Instruments Impedance matching Fractals Frequency response

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Bell inequalities with overlapping measurements

arXiv

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arXiv 2023年

作者： Morán, Moisés Bermejo Pozas-Kerstjens, Alejandro Huber, Felix Faculty of Physics Astronomy and Applied Computer Science Institute of Theoretical Physics Jagiellonian University Kraków30-348 Poland Madrid28049 Spain

Which nonlocal correlations can be obtained, when a party has access to more than one subsystem? While traditionally nonlocality deals with spacelike separated parties, this question becomes important with quantum technologies that connect devices by means of small shared systems. Here we study Bell inequalities where measurements of different parties can have overlap. This allows to accommodate problems in quantum information such as the existence of quantum error correction codes in the framework of non-locality. The scenarios considered show an interesting behaviour with respect to Hilbert space dimension, overlap, and symmetry. Copyright © 2023, The Authors. All rights reserved.

关键词： Quantum optics

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Design of Ultra-Wideband Antipodal Vivaldi Antenna with Improving Impedance Matching using Elliptical Stub for GPR Applications

Design of Ultra-Wideband Antipodal Vivaldi Antenna with Impr...

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International Electrical Engineering Congress (iEECON)

作者： Patchadaporn Sangpet Wanchalerm Chanwattanapong Chayapol Sangmook Chatree Mahatthanajatuphat Thinnawat Jangjing Nonchanutt Chudpooti Paitoon Rakluea Norakamon Wongsin Department of Electronics and Telecommunication Engineering Faculty of Engineering Rajamangala University of Technology Thanyaburi Thailand Department of Electrical and Computer Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Industrial Physics and Medical Instrumentation Faculty of Applied Science King Mongkut's University of Technology North Bangkok Bangkok Thailand

ISBN: (数字)9798331543952

ISBN: (纸本)9798331543969

This paper presents the design of an Antipodal Vivaldi Antenna (AVA) including open elliptical stubs on either side to improve impedance matching at lower frequencies. The stubs further serve as reflectors at 300 MHz, significantly enhancing the antenna gain across the specified frequency ranges. The Antipodal Vivaldi Antenna, measuring 552 × 700 × 1.6 mm 3 , is analyzed and evaluated to determine its characteristics. It possesses ultra-wideband characteristics, providing it suitable for signal exploration systems, and operates effectively throughout the 298–3000 MHz frequency range, which corresponds to the frequencies utilized by GPR technology. The suggested antenna demonstrates directed radiation patterns at all operational frequencies, achieving an average gain of 8.5 dBi.

关键词： Antenna measurements Electrical engineering Impedance matching Vivaldi antennas Reflector antennas Ultra wideband antennas Frequency measurement Reflection coefficient Gain Antenna radiation patterns

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Quantum Analog of Landau-Lifshitz-Gilbert Dynamics

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Physical Review Letters 2024年第26期133卷 266704-266704页

作者： Yuefei Liu Ivan P. Miranda Lee Johnson Anders Bergman Anna Delin Danny Thonig Manuel Pereiro Olle Eriksson Vahid Azimi-Mousolou Department of Applied Physics School of Engineering Sciences KTH Royal Institute of Technology AlbaNova University Center SE-10691 Stockholm Sweden Department of Physics and Astronomy Uppsala University Box 516 SE-751 20 Uppsala Sweden Department of Physics and Electrical Engineering Linnaeus University SE-39231 Kalmar Sweden Swedish e-Science Research Center (SeRC) KTH Royal Institute of Technology SE-10044 Stockholm Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) KTH Royal Institute of Technology SE-10044 Stockholm Sweden School of Science and Technology Örebro University SE-701 82 Örebro Sweden WISE-Wallenberg Initiative Materials Science Uppsala University Box 516 SE-751 20 Uppsala Sweden Department of Applied Mathematics and Computer Science Faculty of Mathematics and Statistics University of Isfahan Isfahan 81746-73441 Iran

The Landau-Lifshitz-Gilbert (LLG) and Landau-Lifshitz (LL) equations play an essential role for describing the dynamics of magnetization in solids. While a quantum analog of the LL dynamics has been proposed in [Phys. Rev. Lett. 110, 147201 (2013)], the corresponding quantum version of LLG remains unknown. Here, we propose such a quantum LLG equation that inherently conserves purity of the quantum state. We examine the quantum LLG dynamics of a dimer consisting of two interacting spin-12 particles. Our analysis reveals that, in the case of ferromagnetic coupling, the evolution of initially uncorrelated spins mirrors the classical LLG dynamics. However, in the antiferromagnetic scenario, we observe pronounced deviations from classical behavior, underscoring the unique dynamics of becoming a spinless state, which is nonlocally correlated. Moreover, when considering spins that are initially entangled, our study uncovers an unusual form of revival-type quantum correlation dynamics, which differs significantly from what is typically seen in open quantum systems.

关键词： Antiferromagnetism

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Electronic and Topological Properties of a Topological Insulator Thin Film Sandwiched between Ferromagnetic Insulators

arXiv

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arXiv 2023年

作者： Pigon, Piotr Dyrdal, Anna AGH University of Krakow Faculty of Physics and Applied Computer Science al. Adama Mickiewicza 30 Kraków30-059 Poland Department of Mesoscopic Physics ISQI Faculty of Physics Adam Mickiewicz University ul. Uniwersytetu Poznańskiego 2 Poznań61-614 Poland

We consider a thin film of a topological insulator (TI) sandwiched between two ferromagnetic (FM) layers. The system is additionally under an external gate voltage. The surface electron states of TI are magnetized due to the magnetic proximity effect to the ferromagnetic layers. The magnetization of ferromagnetic layers can be changed by applying an external magnetic field or by varying thickness of the topological insulator (owing to the interlayer exchange coupling). The change in the magnetic configuration of the system affects the transport properties of the surface electronic states. Using the Green function formalism, we calculate spin polarization, anomalous Hall effect, and magnetoresistance of the system. We show, among others, that by tuning the gate voltage and magnetizations of the top and bottom FM layers, one can observe the topological transition to the anomalous quantum Hall state. © 2023, CC BY.

关键词： Magnetization

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Electric dipole spin resonance in single and two electron quantum dot defined in two-dimensional electron gas at the SrTiO3/LaAlO3 interface.

arXiv

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arXiv 2023年

作者： Szafran, B. Zegrodnik, M. Nowak, M.P. Citro, R. Wójcik, P. AGH University of Krakow Faculty of Physics and Applied Computer Science Al. Mickiewicza 30 Krakow30-059 Poland AGH University of Krakow Academic Centre for Materials and Nanotechnology Al. Mickiewicza 30 Krakow30-059 Poland Fisciano132 Italy

We investigate the energy spectrum of a single and two electron quantum dot (QD) embedded in two dimensional electron gas at the interface between SrTiO3 and LaAlO3, in the presence of the external magnetic field. For this purpose the three band model of 3d-electrons defined on the square lattice of Ti ions was utilized. We demonstrate that, for the weak parabolic confinement potential, the low energy spectrum is sufficiently well described by the effective Hamiltonian reduced to the one dxy orbital with the spin-orbit interaction originating from the coupling to the dxz, dyz bands. This is not the case for stronger confinement where contribution of the states related to the dxz/yz orbital is relevant. Based on the time depended calculations we discuss in details the manipulation of the electron spin in QD by external AC voltages, in the context of the electric dipole spin resonance. The allowed and forbidden transitions are discussed in details with respect to the parity selection rule. Our calculations show that for a single electron QD the spin-flip in the ground-state has a character of a Rabi resonance while for two electrons the singlet-triplet transition is forbidden by the parity symmetry. For the two electrons QD, we demonstrate that the spin-flip transition can still be accomplished via a second-order, two-photon process that has a two-state Rabi character for low AC field amplitude. The violation of the parity symmetry on the spin-flip transitions is also analyzed. © 2023, CC BY.

关键词： Lanthanum compounds

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