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SSRN 2023年

作者： Bulat, Jaroslaw Janowski, Lucjan Cieplińska, Natalia Figlus, Rafal Faculty of Computer Science Electronics and Telecommunications AGH University of Science and Technology Kraków30-059 Poland

This paper presents ‘Daily Video’, an innovative application designed to facilitate longitudinal studies in the realm of quality of experience (QoE). The application simulates real-life video service consumption and collects daily subjective quality assessments from users, promoting an in-depth understanding of user engagement and habits over time. Key features include scheduling, customised queries, user feedback, device orientation tracking and instant access to results, all of which enhance the app’s adaptability and usability for a variety of experimental conditions. The application, available as open-source code, supports state-of-the-art QoE research. © 2023, The Authors. All rights reserved.

关键词： Quality of service

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One Self-Configurable Model to Solve Many Abstract Visual Reasoning Problems

arXiv

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arXiv 2023年

作者： Malkiński, Mikolaj Mańdziuk, Jacek Faculty of Mathematics and Information Science Warsaw University of Technology Warsaw Poland Faculty of Computer Science AGH University of Krakow Krakow Poland

Visual Reasoning (AVR) comprises a wide selection of various problems similar to those used in human IQ tests. Recent years have brought dynamic progress in solving particular AVR tasks, however, in the contemporary literature AVR problems are largely dealt with in isolation, leading to highly specialized task-specific methods. With the aim of developing universal learning systems in the AVR domain, we propose the unified model for solving Single-Choice Abstract visual Reasoning tasks (SCAR), capable of solving various single-choice AVR tasks, without making any a priori assumptions about the task structure, in particular the number and location of panels. The proposed model relies on a novel Structure-Aware dynamic Layer (SAL), which adapts its weights to the structure of the considered AVR problem. Experiments conducted on Raven’s Progressive Matrices, Visual Analogy Problems, and Odd One Out problems show that SCAR (SAL-based models, in general) effectively solves diverse AVR tasks, and its performance is on par with the state-of-the-art task-specific baselines. What is more, SCAR demonstrates effective knowledge reuse in multi-task and transfer learning settings. To our knowledge, this work is the first successful attempt to construct a general single-choice AVR solver relying on self-configurable architecture and unified solving method. With this work we aim to stimulate and foster progress on task-independent research paths in the AVR domain, with the long-term goal of development of a general AVR solver. Copyright © 2023, The Authors. All rights reserved.

关键词： Learning systems

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Improving Optimization With Gaussian Processes in the Covariance Matrix Adaptation Evolution Strategy 23

Improving Optimization With Gaussian Processes in the Covari...

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23rd Conference Information Technologies - Applications and Theory, ITAT 2023

作者： Tumpach, Jiří Koza, Jan Holeňa, Martin Charles University Faculty of Mathematics and Physics Prague Czech Republic Czech Technical University Faculty of Information Technology Prague Czech Republic Czech Academy of Sciences Institute of Computer Science Prague Czech Republic

This paper explores the use of Gaussian processes (GPs) in the covariance matrix adaptation evolution strategy (CMA-ES) for black-box optimization. GPs are powerful probabilistic models that capture complex relationships, making them suitable for modeling uncertain objective functions. Integrating GPs into the CMA-ES improves exploration and adaptation in the search space, enhancing convergence speed and solution quality. The paper describes a novel implementation framework allowing to use GPs as surrogate models for the CMA-ES. That framework findings encourage further research to advance the application of GPs in black-box optimization. © 2023 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0). CEUR Workshop Proceedings (***)

关键词： Optimization

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Spin-resolved nonlocal transport in proximitized Rashba nanowires

arXiv

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arXiv 2024年

作者： Szumniak, Pawel Loss, Daniel Klinovaja, Jelena AGH University of Krakow Faculty of Physics and Applied Computer Science Al. Mickiewicza 30 Kraków30-059 Poland Department of Physics University of Basel Klingelbergstrasse 82 Basel4056 Switzerland

Non-equilibrium transport in hybrid semiconductor-superconductor nanowires is crucial for many quantum phenomena such as generating entangled states via cross Andreev reflection (CAR) processes, detecting topological superconductivity, reading out Andreev spin qubits, coupling spin qubits over long distances and so on. Here, we investigate numerically transport properties of a proximitized Rashba nanowire that hosts spin-polarized low-energy quasiparticle states. We show that the spin polarization in such one-dimensional Andreev bands, extended over the entire nanowire length, can be detected in nonlocal transport measurements with tunnel-coupled side leads that are spin polarized. Remarkably, we find an exact correspondence between the sign of the nonlocal conductance and the spin density of the superconducting quasiparticles at the side lead position. We demonstrate that this feature is robust to moderate static disorder. As an example, we show that such a method can be used to detect spin inversion of the bands, accompanying the topological phase transition (TPT) for realistic system parameters. Furthermore, we show that such effects can be used to switch between CAR and elastic cotunneling (ECT) processes by tuning the strength of either the electric or the magnetic field. These findings hold significant practical implications for state-of-the-art transport experiments in such hybrid systems. Copyright © 2024, The Authors. All rights reserved.

关键词： Nanowires

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An RFID Based Access Control System operating with a computer Program and a Database

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International Journal of Circuits, Systems and Signal Processing 2021年 15卷 1817-1820页

作者： Fall, Waly Seck, Djamal Abdoul Nasser Barro, Fabé Idrissa Department of Physics Faculty of Science and Technology Cheikh Anta Diop University of Dakar Dakar Senegal Department of Mathematics and Computer Science Faculty of Science and Technology Cheikh Anta Diop University of Dakar Dakar Senegal Department of Physics Faculty of Science and Technology Cheikh Anta Diop University of Dakar Dakar Senegal

This article focuses on the realization of an access control system based on RFID (Radio Frequency by Identification) technology. It is an authentication system for controlling access to a sensitive place. This system is composed of RFID cards which are badges that act as electronic keys, an RFID reader, an electronic lock, a microcontroller, a wifi module and a database installed on a computer. The identification number of an RFID card detected by the RFID reader is transferred, via the serial interface, to the microcontroller that communicates with the computer through the wifi module for verification in the database. If the information is valid, the microcontroller triggers the opening of the electronic lock. © 2021, North Atlantic university Union NAUN. All rights reserved.

关键词： Access control

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Prospect study for measurement of Hbb¯ coupling at the LHC and FCC-hh

arXiv

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arXiv 2024年

作者： Abdy, Zahra Najafabadi, Mojtaba Mohammadi AGH University of Science and Technology Faculty of Physics and Applied Computer Science Al. Mickiewicza 30 Krakow30-055 Poland Experimental Physics Department CERN Geneva 231211 Switzerland P.O. Box 19395-5531 Tehran Iran

This paper employs the H + b + jets signature in proton-proton collisions to explore the structure of the Hbb¯ *** focus of the analysis lies in the decay of the Higgs boson into a photon pair, taking into account both reducible and irreducible backgrounds and a realistic simulation of the detector effects. To enhance the discrimination between signal and background, a multivariate analysis is employed to analyse the kinematic variables and optimise the signal-to-background ratio. The results indicate that the H + b+ jets process can significantly contribute to the precise measurement of CP-even and CP-odd couplings between the bottom quark and the Higgs boson at the LHC and FCC-hh. Finally, a novel asymmetry is introduced for the purpose of probing CP violation within the Hbb¯ coupling, formulated exclusively based on lab-frame momenta. © 2024, CC BY.

关键词： Couplings

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A Proposed Fully Transparent, Flexible, and Compact Modeled Low-Voltage TFT for Implementation of Full Adder and Subtractor

IEEE Journal on Flexible Electronics

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IEEE Journal on Flexible Electronics 2024年第11期3卷 477-483页

作者： Singh Mehrolia, Mukuljeet Verma, Ankit Kumar Singh, Abhishek Chourasia, Nitesh K. Pandey, Amritanshu Rajiv Gandhi Institute of Petroleum Technology Department of Electrical and Electronics Engineering Jais Uttar Pradesh Amethi229304 India SRM Institute of Science and Technology Delhi-NCR Campus Faculty of Engineering and Technology Department of Electronics and Communication Engineering Modinagar Ghaziabad201204 India Shree Guru Gobind Singh Tricentenary University Faculty of Applied and Basic Sciences Department of Physics Haryana Gurugram122505 India Department of Electronics Engineering Varanasi221005 India

In this article, a low-voltage, fully transparent, flexible thin-film transistor (TFT) is simulated using the Silvaco-Atlas tool, in which amorphous indium-gallium–zinc oxide (a-IGZO) and HfO2 are used as the active layers, gate dielectrics of the TFT, and indium-tin oxide (ITO) serves as the electrodes for source, drain, and gate contacts. In addition, this TFT is compactly modeled and used in the implementation of full adder and full subtractor circuits through the Silvaco-Techmodeler and Silvaco-Gateway tools. The technology computer-aided design (TCAD) simulated device has an operating voltage of 2 V and good performance parameters, such as a low threshold voltage of 0.104 V, high mobility (~8.9 cm2/V-sec), high ION/ IOFF~105} , and a low subthreshold slope (SS) of 65 mV/decade. The Silvaco-Gateway tool is used for the execution of full adder and subtractor circuits. For all eight inputs (from 000 to 111), it gives quite acceptable transient characteristics in analyzing corresponding outputs as sum, carry, difference, and borrow. Silvaco-Techmodeler tools help in the compact modeling of simulated devices and generate a high level of accuracy of ~100% with very minimal error between simulated and modeled data (0.41% and 0.94%, respectively). This simulated, compactly modeled TFT would be used in the near future for analyzing complex analog and digital circuits. © 2024 IEEE.

关键词： Thin film transistors

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Upper limit to quantum interaction strength between free electrons and electromagnetic single modes

Upper limit to quantum interaction strength between free ele...

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CLEO: Fundamental science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Xie, Zetao Chen, Zeling Li, Hao Yan, Qinghui Chen, Hongsheng Lin, Xiao Kaminer, Ido Miller, Owen D. Yang, Yi Department of Physics HK Institute of Quantum Science and Technology The University of Hong Kong Pokfulam Hong Kong Department of Applied Physics Energy Sciences Institute Yale University New HavenCT06520 United States Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation ZJU-Hangzhou Global Science and Technology Innovation Center College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China Solid State Institute Faculty of Electrical and Computer Engineering Technion - Israel Institute of Technology Haifa32000 Israel

ISBN: (纸本)9781957171395

Free-electron quantum optics facilitates electron-photon entanglement for quantum information processing. The challenge is finding specialized photonic-structures optimizing electron-photon interactions. We present a first-principle upper limit on the interaction strength, guiding the design of future structures. © Optica Publishing Group 2024, © 2024 The Author(s)

关键词： Quantum optics

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Thermal Simulation for Magnetic Coupler of Wireless Power Transfer Electric Vehicles by Using Heat Sink and Thermoelectric Cooler

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Progress In Electromagnetics Research M 2024年 126卷 89-98页

作者： Farooq, Umar Shafique, Shahryar Asif, Muhammad Arslan, Muhammad Wongjom, Poramed Ullah, Rizwan Zhilenkov, Anton Mobayen, Saleh Pijitrojana, Wanchai Electrical and Computer Engineering Department Thammasat School of Engineering Thammasat University Rangsit Campus Klong Luang Pathum Thani 12120 Thailand Ministry of IT & Telecommunications Islamabad Pakistan Department of Electrical Engineering University of Science and Technology Main Campus Bannu23200 Pakistan Department of Mechanical Engineering University of Engineering and Technology Lahore Pakistan Division of Physics Faculty of Science and Technology Thammasat University Rangsit Campus Klongluang Pathum Thani 12120 Thailand Department of Electrical Engineering Chulalongkorn University Bangkok10330 Thailand Department of Cyber-Physical Systems St. Petersburg State Marine Technical University Saint-Petersburg190121 Russia Graduate School of Intelligent Data Science National Yunlin University of Science and Technology 123 University Road Section 3 Yunlin Douliou640301 Taiwan

In challenging operational environments such as underground buildings beneath roadways, reliability and performance of wireless power transfer (WPT) systems for electric vehicles (EVs) heavily hinge on the operating temperature of the magnetic couplers. Addressing this, this study introduces a novel approach employing heat sink and thermoelectric cooler technologies to mitigate temperature rise in magnetic couplers, which is particularly crucial for high-power applications. Utilizing ANSYS simulation, the study evaluates a WPT high-power application coil model with a total output power of 2 KW and an 18 cm air gap, with a 3.5 cm adjacent alignment to enhance thermal performance on both transmitter and receiver sides. Results demonstrate significant thermal enhancement, reducing the temperature of coils from 63◦ C to 54◦ C solely with the heat sink and further down to 48◦ C with the combined implementation of both heat sink and thermoelectric cooler. These measures effectively dissipate heat from the coils into the surrounding air, ensuring system efficiency and stability while facilitating functionality of system components. © 2024, Electromagnetics Academy. All rights reserved.

关键词： Heat sinks

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Fine-tuning of mechanical properties in a Zn-Ag-Mg alloy via cold plastic deformation process and post-deformation annealing

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Bioactive Materials 2021年第10期6卷 3424-3436页

作者： Maria Wątroba Wiktor Bednarczyk Jakub Kawałko Piotr Bała AGH University of Science and Technology Faculty of Metals Engineering and Industrial Computer ScienceAl.A.Mickiewicza 3030-059 KrakowPoland AGH University of Science and Technology Academic Centre for Materials and NanotechnologyAl.A.Mickiewicza 3030-059 KrakowPoland

In recent years,Zn-based materials have been extensively investigated as potential candidates for biodegradable implant *** introduction of alloying elements providing solid-solution strengthening and second phase strengthening seems crucial to provide a suitable platform for the thermo-mechanical strengthening of Zn *** this study,a systematic investigation of the microstructure,crystallographic texture,phase composition,and mechanical properties of a Zn-3Ag-0.5Mg(wt%)alloy processed through combined hot extrusion(HE)and cold rolling(CR),followed by short-time heat treatment(CR+HT)at 200◦C was ***,the influence of different annealing temperatures on the microstructure and mechanical properties was *** adequate combination of processing conditions during CR and HT successfully addressed brittleness obtained in the high-strength HE Zn-3Ag-0.5Mg *** controlling the microstructure,the most promising results were obtained in the sample subjected to 50%CR reduction and 5-min annealing,which were:ultimate tensile strength of 432 MPa,yield strength of 385 MPa,total elongation to failure of 34%,and Vickers microhardness of 125 *** obtained properties clearly exceed the mechanical benchmarks for biodegradable implant *** on the conducted investigation,brittle multi-phase Zn alloys’mechanical performance can be substantially enhanced to provide sufficient plasticity by grain refinement through cold deformation process,followed by short-time annealing to restore proper strength.

关键词： Zinc alloys Cold rolling Heat treatment Mechanical properties Grain refinement

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