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Non-Invasive Device for Hearing Rehabilitation

Non-Invasive Device for Hearing Rehabilitation

引用

E-Health and Bioengineering Conference (EHB)

作者： Daniela Goldan Mihai Aron Teofil Ilie Ursache Gladiola Petroiu Cristian Rotariu Dept. of Biomedical Sciences Faculty of Medical Bioengineering Grigore T. Popa University of Medicine and Pharmacy of Iasi Iași Romania Dept. of Automatic Control and Applied Informatics Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University Iași Romania

ISBN: (数字)9798331532147

ISBN: (纸本)9798331532154

Hearing loss impacts over 5% of the world's population, a percent rising due to aging populations, noise exposure, and chronic health conditions. To address this, we developed a non-invasive hearing device designed for individuals with hearing challenges that limit the use of hearing aids. The proposed device integrates a set of Bluetooth headphones with a smartphone, that process the ambient sound in real time through a software application and delivers to the hear impaired patient via bone conduction, bypassing traditional auditory pathways. Laboratory tests confirmed that the proposed device effectively replicates auditory perception. The developed device offers an accessible and user-friendly alternative to patients who cannot use traditional hearing aids.

关键词： Irrigation Noise Auditory system Ear Receivers Hearing aids Propagation losses Real-time systems Software Testing

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Identification and control of a Linear Time-Periodic Test Bench Using Harmonic Transfer Functions and LQR controllers

Identification and Control of a Linear Time-Periodic Test Be...

引用

International Conference on control, Decision and Information Technologies (CoDIT)

作者： Basak Sert Bahadir Catalbas Ismail Uyanik Dept. of Electrical and Electronics Engineering Hacettepe University Ankara Turkey Defence Systems Technologies Division Aselsan Inc. Ankara Turkey Dept. of Control and Automation Engineering Yildiz Technical University İstanbul Turkey

The increased need for accurately modeling the input-output characteristics of linear time-periodic (LTP) systems necessitates novel identification and control algorithms as well as new test benches for their experimental validation. This paper introduces a simple-to-build test bench for the identification and control of LTP systems. We mechanically coupled the shafts of two DC motors and fed back the angular velocity to the second motor with a time-periodic modulation. This allowed us to imitate a time-periodic load for the first DC motor, thereby yielding an experimental LTP plant. We used Matlab/Simulink target hardware support to implement the entire software in Simulink, which greatly simplifies input design, data collection, and analysis as compared to embedded programming. We used constant-frequency sinusoidal signals for the data collection on the experimental test bench. Subsequently, we estimated the harmonic transfer functions and identified the parameters of a state-space model of the proposed LTP system. We then designed a time-periodic controller in order to regulate the output of the LTP system. We designed a reference-tracking controller along with a Linear Quadratic Integrator (LQI) to improve the system performance. We validated our results through experiments on the physical LTP system plant.

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Thermal Model Validation of a Power Electronics Module for Digital Twin Application

Thermal Model Validation of a Power Electronics Module for D...

引用

European Conference on Power Electronics and Applications

作者： Svenja Zöller Claudia Cabre-Piqueras Boris Schilder Alber Filba-Martinez Lukas Acker Faculty of Computer Science and Engineering Frankfurt University of Applied Science Frankfurt Germany Power Systems Dept. Catalonia Institute for Energy Research (IREC) Barcelona Spain

ISBN: (数字)9798350364446

ISBN: (纸本)9798350364453

Thermal stress is a critical failure factor for power electronics components. Hence, when developing a precise digital twin for a power system, it is imperative that thermal models provide a reliable portrayal of the component physics. In that regard, manufacturers offer simplified thermal models that enable designers and users to estimate its behaviour. Nevertheless, the accuracy of these models remains unknown, thus compromising the overall certainty of the digital twin. Therefore, it is of interest to discern whether these simplified models are sufficient for the precision required by the digital twin, and to assess the need of developing a more accurate model. Hence, this paper focuses on validating the theoretical thermal model of a power electronics switch module setup by using the deviation of the module mean time to failure (MTTF) as the acceptance parameter. To achieve this, a novel experimental validation methodology is proposed to retrieve an experimental thermal model and compare it to the theoretical one. This validation is performed considering the discrete thermal impedances and introducing the study of the coupling effects within the module.

关键词： Couplings Accuracy Europe Switches Power electronics Digital twins Power system reliability Reliability Thermal stresses Stress

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Reinforcement Learning-enabled Auctions for Self-Healing in Service Function Chaining

Reinforcement Learning-enabled Auctions for Self-Healing in ...

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IEEE International Conference on Communications Workshops, ICC

作者： Marios Avgeris Aris Leivadeas Ioannis Lambadaris Dept. of Systems and Computer Eng. Carleton University Ottawa Canada Dept. of Software Engineering and IT École de Technologie Supérieure (ÉTS) Montréal Canada

Service Function Chaining (SFC), defines the capability of interconnecting a number of ordered Service Functions (SFs) to create composite network services. A critical issue in SFC is the autonomic fault recovery, i.e., bringing the system back to its normal operation after a hardware or software failure. To address this challenge, in this paper, we propose a novel distributed methodology that treats the SFC Self-Healing problem in an Edge-Cloud infrastructure, while accounting for the various stakeholders. In particular, the individual SFC healing decisions are iteratively optimized and determined, while a Reinforcement Learning (RL)-based SFC-to-datacenter association procedure is realized. This process is complemented by a combinatorial auction-based resource allocation mechanism that resolves the potential SFC collocations at the end of each iteration. The proper operation, effectiveness and efficiency of our proposed healing mechanism is assessed under various evaluation scenarios.

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Arabic Sentiment Analysis of Mobile Banking Services Reviews

Arabic Sentiment Analysis of Mobile Banking Services Reviews

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International Conference on Social Networks Analysis, Management and Security (SNAMS)

作者： Safaa M. Khabour Dheya Mustafa Qutaibah AlThebyan Dept. of Information Systems Faculty of Information Technology and Computer Sciences Yarmouk University Irbid Jordan Dept. of Computer Engineering Faculty of Engineering The Hashemite University Zarqa Jordan Dept. of Cybersecurity Al Ain University Al Ain UAE Jordan University of Science and Technology Irbid Jordan

Online customer reviews have developed into a significant source of information about a business's performance. Due to shifting consumer expectations and growing internet penetration, the Middle East, especially Jordan, is seeing an increase in the usage of online banking. This propensity toward digital transition has been accelerated by the COVID-19 pandemic. Mobile banking service companies aim to effectively use customers' feedback to identify areas for improvement in customer satisfaction. Although Arabic is becoming one of the most widely used languages on the Internet, only a few studies have focused on Arabic sentiment analysis to date. The present study conducts an extensive emotion mining and sentiment analysis on mobile banking reviews in Arabic, exploiting machine learning, natural language processing, and resampling methods to obtain subjective feedback, determine polarity, and identify customers' feelings in the banking domain. This work walks the reader through detailed steps of cleaning and preprocessing a manually annotated dataset of online banking reviews in Arabic, followed by features extraction and modeling, dataset splitting, and balancing training data. Finally, we examined classification algorithms including Decision Tree (DT), Support Vector Machine (SVM), Logistic Regression (LR), Naïve Bayes (NB), K-Nearest Neighbors (KNN), and Random Forest (RF). Ensemble hard and soft voting ML methods were also evaluated. We achieved a maximum accuracy of about 94% using the LR classifier and a maximum precision of 94% using the LR and hard voting methods. Our methodology will enable banks to acquire insights on how to develop their online presence and meet the demands of customers and stakeholders.

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A Reinforcement-Learning Self-Healing Approach for Virtual Network Function Placement

A Reinforcement-Learning Self-Healing Approach for Virtual N...

引用

IEEE Symposium on Network Operations and Management

Modern networking paradigms like Service Function Chaining (SFC) allow for services to be broken down to a series of ordered and interconnected Virtualized Network Functions (VNFs) that can be hosted in generic servers in EdgeCloud datacenters. Nonetheless, a critical issue arises, when a hardware or software failure occurs and the VNFs of an SFC need to be repositioned, allowing to autonomously bring the system back to its normal operation, a process called self-healing. In this paper, a distributed methodology is proposed that aims to address this challenge, considering the requirements of all involved actors. Specifically, a Reinforcement Learning (RL) based algorithm is proposed that allows to iteratively optimize and determine an SFC healing solution upon a datacenter failure. As a second stage, a revenue-driven resource allocation mechanism is integrated, to resolve the contention for resources in an already functional datacenter that potentially occurs due to the repositioning. Various simulation scenarios prove the efficiency of our proposed resilient healing mechanism.

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Utilization of Online Collaborative Tools in Software engineering: An Empirical Study on Review Meetings 6

Utilization of Online Collaborative Tools in Software Engine...

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6th International Conference on computer Science and engineering, UBMK 2021

作者： Akman, Ibrahim Turhan, Cigdem Hacaloglu, Tuna Dept. of Computer Engineering Atilim University Ankara Turkey Dept of Software Engineering Atilim University Ankara Turkey Dept of Information Systems Engineering Atilim University Ankara Turkey

ISBN: (纸本)9781665429085

Software development involves a significant amount of team effort where collaboration and communication of the team members are crucial. The team meetings are core activities in all stages of the software development process. Even though these meetings often are conducted face-to-face (F2F) with a lackof technology utilization, changing global conditions such as the COVID-19 pandemic require other solutions urgently without interrupting the software development schedule. For this purpose, online collaborative tools provide new opportunities for software teams to work together avoiding waste in time and resources and the relevant literature is immature. This study aims to assess the factors affecting the integration of online collaborative tools to SE practices with a special reference to review meetings. For this purpose, a sample of 73 SE sophomore and junior students who are future software professionals participated in experimental review meetings based on predefined scenarios. The findings indicate that the utilization of OCT's has positive effects on the participants' actual performance and improves the interaction between team members compared to F2F meetings. © 2021 IEEE

关键词： Software design

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Sampled-Data Output Feedback Stabilization of a Family of High-Order systems with Delays

Sampled-Data Output Feedback Stabilization of a Family of Hi...

引用

American control Conference (ACC)

作者： Congran Zhao Wei Lin School of Mathematics and Statistics Jiangsu Normal University Xuzhou China Dept. of Electrical Systems and Computer Engineering Case Western Reserve University Cleveland Ohio USA

ISBN: (数字)9798350382655

ISBN: (纸本)9798350382662

Sampled-data control via output feedback is studied for a family of strongly nonlinear systems with state and input delays. Under sample and hold, a delay-free output feedback control scheme is developed based on the emulation method, adding a power integrator (AAPI) technique, and recursive design of nonlinear observers. With the aid of Lyapunov-Krasovskii functional theorem, together with the idea of homogeneous domination, we prove that the proposed sampled-data output feedback controller makes the hybrid closed-loop systems with delays and uncertainty globally asymptotically stable, if the input delay and sampling period are limited. The family of time-delay uncertain systems under consideration goes beyond the Lipschitz or linear growth condition and is genuinely nonlinear as it contains uncontrollable/unobservable linearization and is not stabilizable, even locally, by any linear or smooth feedback. Application of the sampled-data control scheme presented in this paper is illustrated by an example with simulation.

关键词： Uncertain systems Uncertainty Emulation Observers Delays Closed loop systems Nonlinear systems

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Feature of Solar Radiation Forecast Services Use for Solar Plants 8

Feature of Solar Radiation Forecast Services Use for Solar P...

引用

8th IEEE International Conference on Energy Smart systems, ESS 2022

作者： Verbytskyi, Ievgen Lukianov, Mykola Strzelecki, Ryszard National Technical University of Ukraine Igor Sikorsky Kyiv Polytechnic Institute Dept. of Electronic Devices and Systems Kyiv Ukraine Gdańsk University of Technology Faculty of Electrical and Control Engineering Gdańsk Poland

ISBN: (数字)9798350334418

ISBN: (纸本)9798350399202

Many countries, including Ukraine, are beginning to regulate the generation of energy produced from renewable energy sources more tightly to mitigate power imbalances. For this reason, electricity energy providers from renewable sources are forced to forecast energy generation and pay penalties if their forecast doesn't match with real energy generation. Renewable energy providers may use weather forecast as well as install energy storage system to minimize the penalties. The main purpose of the study is the review common cloudiness forecast services, uncertainty interval calculation of solar radiation for these services based on comparing with real solar radiation, estimating the opportunity of combining forecast data from several sources to minimize error and analysing the profit from the power plant using forecast services. © 2022 IEEE.

关键词： Solar radiation

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Design and Experimental Verification of a Laser Engraving Machine

Design and Experimental Verification of a Laser Engraving Ma...

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Emerging Power Technologies (ICEPT), International Conference on

作者： Malik Shahaan Khalid Syed Muhammad Jaleed Arslan Zafar Sohaib Ali Khan Hafiz Zia Ur Rehman Zeashan Hameed Khan Dept. of Mechatronics Engineering Air University Islamabad Pakistan Department of Computer & Information Systems Engineering (CIS) N.E.D UET Karachi Pakistan Dept. of Avionics Engineering CAE NUST Islamabad Pakistan

This paper aims to develop a low-cost laser engraving machine. Materials like plastics, acrylic, glass, wood, cardboard, and leather have been used to engrave desired inputs. It have been found that this laser engraving process has a higher precision and accuracy as compared to traditional embellishing and embossing. The laser beam acquires thermal energy, which emerges from the machine and engraves the material. CREO 2.0 software is used for the 3D modeling and simulation of the machine. Arduino and different controller boards are tried and used in assembling the machine in less time. Different dependency and dimensional tests are conducted in order to validate the machine. The results are found to be satisfactory in terms of quality and cost. The final assembly is experimentally verified which is based on a 2D gantry that is mounted with a laser LED payload for laser engraving on various compatible materials.

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