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6th Iraqi International Conference on Engineering Technology and its Applications, IICETA 2023

作者： Ridha, Ameer Ali Almaameri, Ihab Blazovics, Laszlo Abbas, Haider Mohammed Education in Najaf Ministry of Education Najaf Iraq Budapest University of Technology and Economics Department of Automation and Applied Informatics Budapest Hungary The Islamic University Najaf Iraq

ISBN: (纸本)9798350303339

In the last years of this decade, the recognition of human activity has become important to a wide range of researchers in pattern recognition and human-computer interaction as a result of its wide range of real-world applications, such as gesture recognition, biometric user identification, surveillance by authorities, behavior analysis and health monitoring of the elderly. Human Activity Recognition (HAR) has become a significant topic in mobile and ubiquitous computing as a result of the widespread use of wearable sensor devices and the Internet of Things (loT). Deep Learning (DL) is one of the most commonly used problem-solving techniques in the HAR system. Nevertheless, there are major challenges in applying HAR to problems in recognizing various human activities. In this paper, presented and showed the activities of implementing a new combination of DL methods for multi-class user activity identification to HAR. Using DL methods can be extracting discriminative features automatically from raw sensor data. Specifically, in this work, we proposed a hybrid architecture that features a combination of Bidirectional Long Short-Term Memory (BILSTM) networks and support vector Machines (SVM) for the HAR task. The UCI HAR dataset is used to test the model, it consists of accelerometer and gyroscope data obtained from smartphones. The dataset is split into 30 % for testing and 70% for training. The results for the (BILSTM-SVM) model, showed that the highest accuracy for all users was 98.74 %, higher than all previous models using the same dataset. © 2023 IEEE.

关键词： Support vector machines

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New feature based on influence lines for anomaly detection in bridge monitoring 12th

New feature based on influence lines for anomaly detection i...

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12th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2024

作者： Döring, A. Vogelbacher, M. Schneider, O. Müller, J. Hinz, S. Matthes, J. Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Karlsruhe Germany Büro für Strukturmechanik Coburg Germany Institute of Photogrammetry and Remote Sensing Karlsruhe Institute of Technology Karlsruhe Germany

ISBN: (纸本)9781032770406

Bridge monitoring using displacement, strain, acceleration or rotation measurements during normal operation can be a good supplement to conventional manual bridge inspections. In order to detect damage from the measured signal, features must be extracted from the signal that are primarily damage-sensitive. In recent years, features based on the influence lines have been increasingly investigated. The influence line represents the simplified signal that can be measured with a sensor at a fixed position when a single vehicle crosses the bridge. In this paper, we present the new feature normalised integrated influence lines (niil). We show that niil is sensitive to damage, independent of vehicle geometry, velocity, sampling rate, deviation from ideal lane and robust against noise using the analytical bending beam and strain data from a real bridge that has been successively damaged. niil can be calculated based on the curvature, rotation or displacement influence lines. © 2024 The Author(s).

关键词： Anomaly detection

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Boost Converter Modeling and Control based on its Role within a Microgrid 16

Boost Converter Modeling and Control based on its Role withi...

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16th IEEE International Symposium on applied Computational Intelligence and informatics, SACI 2022

作者： Rat, Cezara-Liliana Prostean, Octavian Filip, Ioan Ichim-Burlacu, Catalin Politehnica University of Timisoara Department of Electrical Engineering and Industrial Informatics Timisoara Romania Politehnica University of Timisoara Department of Automation and Applied Informatics Timisoara Romania

ISBN: (数字)9781665481250

ISBN: (纸本)9781665481250

The aim of this paper is to present an alternative method of converter modeling. This method is based on the classical state-space modeling method and it consists of using certain simplifications throughout the modeling process which are based on the configuration in which the converter is to be used within the energy conversion system or microgrid. This method was designed with the purpose of simplifying the conventional process of obtaining a linear model through state-space modeling. The reason for it was the fact that most converter state-space models are nonlinear and require linearization around an operating point in order to be used for control structure design. The method presented in this paper is more likely to provide a linear model than the classical method. © 2022 IEEE.

关键词： Boost converter

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Android Application to Support Communication Between Romanian Hearing and Deaf Peoples 16

Android Application to Support Communication Between Romania...

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16th IEEE International Symposium on applied Computational Intelligence and informatics, SACI 2022

作者： Golimba, Petrisoara Stanciu, Loredana Continental Automotive Romania Automation and Computer Science Faculty Upt Timisoara Romania Politehnica University Timisoara Automation and Applied Informatics Department Timisoara Romania

ISBN: (数字)9781665481250

ISBN: (纸本)9781665481250

Deaf persons usually relies on sign language to communicate with other human beings. This language is expressed through manual articulations in combination with non-manual elements, being a full rights language, with its own grammar and lexicon. Still, it is closely linked to the culture, customs and norms of the community that uses it, so that there is a sign language for the deaf community in Romania. Though there are many attempts to develop assistive technologies, most of them are for American Sign Language. The article presents an Android application to translate a message from Romanian language to Romanian sign language through videos in which these words are mimicked. The application was successfully used in an orphanage by hearing children to learn the sign language and to communicate with a deaf peer. © 2022 IEEE.

关键词： Audition

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Support-Vector Machine-Based Classifier of Cross-Correlated Phoneme Segments for Speech Sound Disorder Screening 32

Support-Vector Machine-Based Classifier of Cross-Correlated ...

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32nd Medical informatics Europe Conference, MIE 2022

作者： Mahmut, Emilian-Erman Nicola, Stelian Stoicu-Tivadar, Vasile Politehnica University Timisoara Department of Automation and Applied Informatics P-ta Victoriei no. 2 Timisoara Romania

ISBN: (纸本)9781643682846

This paper presents a Support-Vector Machine (SVM) based method of classification of cross-correlated phoneme segments as part of the development of an automated Speech Sound Disorder (SSD) Screening tool. The pre-processing stage of the algorithm uses cross-correlation to segment the target phoneme and extracts data from the new homogeneously trimmed audio samples. Such data is then fed into the SVM-based classification script which currently achieves an accuracy of 97.5% on a dataset of 132 rows. Given the global context of an increasing trend in the incidence of Speech Sound Disorders (SSDs) amongst early-school aged children (5-6 years old), the constraints imposed by the new Corona virus pandemic, and the (consequent) shortage of professionally trained specialists, an automated screening tool would be of much assistance to Speech-Language Pathologists (SLPs). © 2022 European Federation for Medical informatics (EFMI) and IOS Press.

关键词： Support vector machines

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Ultraviolet Radiation Aging Impact on Mechanical Properties of Silane-XLPE Cable Insulation 1

Ultraviolet Radiation Aging Impact on Mechanical Properties ...

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1st International Conference on Renewable Solutions for Ecosystems: Towards a Sustainable Energy Transition, ICRSEtoSET 2023

作者： Afeissa, Saadiya Boukezzi, Larbi Bessissa, Lakhdar Loucif, Amina Hameurlaine, Abdelhadi Msil University of Djelfa Materials Science and Informatics Laboratory Djelfa Algeria Enicab Biskra Algeria University of Djelfa Laboratory of Applied Automation & Industrial Diagnostics Djelfa Algeria

ISBN: (纸本)9798350346336

The study of cross-linked polyethylene (XLPE) ability to resist under weather degradation become an important issue for many researchers. In this paper, the effect of accelerated ultraviolet radiation aging on the mechanical properties of silane cross-linked polyethylene (Si-XLPE) has been studied. In order to gain more information on this effect, we have conducted 288 hours of cyclic accelerated aging under ultraviolet radiation in QUV equipment. Tensile mechanical tests have been undertaken for different aging periods. The results indicated that mechanical behavior of Si-XLPE was deeply affected by UV radiation aging. The elongation at break after a slight increase after the first 48 hours, it decreased from 600 % to 407 %. The yielding strength and young's modulus was found to be very sensitive to the aging time under UV radiation. © 2023 IEEE.

关键词： Strain

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Advancing Distributed Ac Optimal Power Flow for Integrated Transmission-Distribution Systems

SSRN

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SSRN 2024年

作者： Dai, Xinliang Zhai, Junyi Jiang, Yuning Guo, Yi Jones, Colin N. Hagenmeyer, Veit Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Germany China Switzerland Switzerland

This paper introduces a distributed operational solution for integrated transmission-distribution (ITD) system management. A fundamental challenge in designing distributed approaches for AC optimal power flow (OPF) problems in ITD systems is the nonconvexity and nonlinearity of the optimization problems for both transmission and distribution systems. To tackle the challenges, our research introduces an enhanced version of the Augmented Lagrangian based Alternating Direction Inexact Newton method (aladin), which incorporates a second-order correction strategy and convexification. The former improves the algorithm’s ability to follow curved trajectories effectively with minimal additional computational demand, while the latter simplifies the decoupled subproblems without introducing the combinatory complexity typically associated with additional inequality constraints. The theoretical studies demonstrate that the proposed distributed algorithm operates the ITD systems with a local quadratic convergence guarantee. Extensive simulations on various ITD configurations highlight the superior performance of our distributed approach in terms of convergence speed, computational efficiency, scalability, and adaptability. © 2024, The Authors. All rights reserved.

关键词： Constrained optimization

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A Spatial Decomposition Method for Solving the Security-Constrained Unit Commitment Problem 7

A Spatial Decomposition Method for Solving the Security-Cons...

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7th IEEE International Humanitarian Technologies Conference, IHTC 2024

作者： Madhusoodhanan, Arjun Kumar Giuntoli, Marco Schmitt, Susanne Harjunkoski, Iiro Poland, Jan Leibfried, Thomas Karlsruhe Institute of Technology Institute of Automation and Applied Informatics Karlsruhe Germany Karlsruhe Institute of Technology Institute for Electrical Energy Systems and High Voltage Technology Karlsruhe Germany Hitachi Energy Research Mannheim Germany

ISBN: (纸本)9798350354645

Today, we are experiencing exponential growth in distributed energy sources and storage systems, such as Battery Energy Storage Systems (BESS), which participate in the day-ahead energy market. Moreover, the need for energy market coupling to ensure social welfare maximization and grid security makes the Security-Constrained Unit Commitment (SCUC) problem more challenging due to the increasing problem size. This work proposes a novel approach for solving the SCUC problem in a distributed manner by decomposing the grid into multiple areas connected by tie-lines. The solution leverages the Alternating Direction Method of Multipliers (ADMM) to solve the problem efficiently. The proposed Spatially Decomposed SCUC method significantly reduces the computational burden arising from the combinatorial nature of the problem. The speed-up and optimality of the proposed method is validated on the IEEE 118-bus and RTE 6468-bus systems. © 2024 IEEE.

关键词： Commerce

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Design-and Simulation of a Body-Worn Optical Xylene Measuring Device for Use in Pathology

Design-and Simulation of a Body-Worn Optical Xylene Measurin...

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Design, Test, Integration and Packaging of MEMS/MOEMS

作者： Ingo Sieber Alen Deleut Lisa Petani Christian Pylatiuk Institute for Automation and Applied Informatics (IAI) Karlsruhe Institiute of Technology (KIT) Karlsruhe Germany

ISBN: (数字)9798350378269

ISBN: (纸本)9798350378276

In pathology, xylene is used in various process steps to prepare tissue samples for further examination and is essential despite potential health risks. To protect employees, it is desirable to monitor exposures to individuals using a wearable detector. This article presents the design and simulation of a xylene measuring device based on a multi pass cell, which is the size of a smartphone and thus allows the measuring unit to be worn comfortably on the body. The geometrical and metrological requirements result in a beam path of approximately 2000 mm, folded to such an extent that it undercuts 28 reflections on its path.

关键词： Pathology Optical design Optical variables measurement Packaging Optical detectors Size measurement Reflection

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Towards a Real-World Dispatchable Feeder

Towards a Real-World Dispatchable Feeder

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IEEE Electronic Power Grid (eGrid)

作者： Sebastian Beichter Maximilian Beichter Dorina Werling Johannes Galenzowski Victor Weise Christoph Hildenbrand Friedrich Wiegel Ralf Mikut Simon Waczowicz Veit Hagenmeyer Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Germany

With the integration of renewable energy sources, electric vehicles, and batteries at the low-voltage distribution grid level, residential buildings are increasingly evolving from consumers to prosumers. As the prosumers burden the distribution grid with their uncertain interactions, the need for solutions to counteract this uncertainty becomes more important. One such solution is schedule-based control strategies, such as the dispatchable feeder. Thereby, the dispatchable feeder uses intelligent managed flexible components such as battery energy storage system (BESS) and controllable loads to follow a committed schedule. While the concept of the dispatchable feeder is widely discussed in the literature, the practical challenges associated with its real-world implementation remain under-explored. Therefore, this paper identifies challenges associated with the real-world implementation of the dispatchable feeder in residential buildings. Further, it discusses important future research questions regarding the concept and its valuable integration into the real world. It also proposes an experimental research infrastructure for systematically investigating the raised questions using the real-world laboratory of the Energy Lab 2.0.

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