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Your search keyword '"Marinova, Iliana"' showing total 221 results
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221 results on '"Marinova, Iliana"'

1. Acoustic Sensing in Microfluidic Cell

Author

Mateev, Valentin, Ivanov, Georgi, Marinova, Iliana, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Suryadevara, Nagender Kumar, editor, George, Boby, editor, Jayasundera, Krishanthi P., editor, and Mukhopadhyay, Subhas Chandra, editor

Published
2023
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2. Thermal Li-Ion Battery Management with Distributed Sensors on Cooling Foil Shields

Author

Mateev, Valentin, Kartunov, Zhelyazko, Marinova, Iliana, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Suryadevara, Nagender Kumar, editor, George, Boby, editor, Jayasundera, Krishanthi P., editor, and Mukhopadhyay, Subhas Chandra, editor

Published
2023
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5. Filament Supply Sensing and Control for FFF/FDM 3D Printing Technology

Author

Mateev, Valentin, Ralchev, Martin, Marinova, Iliana, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Suryadevara, Nagender Kumar, editor, George, Boby, editor, Jayasundera, Krishanthi P., editor, Roy, Joyanta Kumar, editor, and Mukhopadhyay, Subhas Chandra, editor

Published
2022
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6. Electric Arc Discharge Power Estimation by CNN Image Classification

Author

Mateev, Valentin, Ralchev, Martin, Marinova, Iliana, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Suryadevara, Nagender Kumar, editor, George, Boby, editor, Jayasundera, Krishanthi P., editor, Roy, Joyanta Kumar, editor, and Mukhopadhyay, Subhas Chandra, editor

Published
2022
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8. Dynamic characteristics of electromagnetic contactor with HTS-2G coil in liquid nitrogen

Author

Ivanov Georgi, Mateev Valentin, and Marinova Iliana

Subjects
Environmental sciences, GE1-350
Abstract

In this paper is presented experimental investigation of dynamic characteristics of electromagnetic contactor with Hightemperature superconductive (HTS) coil in liquid nitrogen. Transient characteristics of armature dynamics and current during electromagnet switching are presented and analysed. HTS coil could provide reduced electric energy consumption in long term operation by active coil resistance reduction, improving this way electromagnetic contactor energy efficiency. Estimation of electromagnetic contactor with HTS-2G coil energy consumption is also presented.

Published
2024
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9. Magnetically controlled systems for CO2 absorption

Author

Mateev Valentin and Marinova Iliana

Subjects
Environmental sciences, GE1-350
Abstract

In this paper is presented a conceptual model of magnetically controlled system for CO2 absorption. A design of magnetic air contactor is considered and internal magnetic field in its channels is modelled. It is a closed domain contactor design with controllable internal thermodynamic conditions, additionally influenced by magnetic field. Considered design is providing huge specific surface for dynamic interaction with the processed airflow. Results on magnetic field distribution inside air channels are calculated in order to estimate field homogeneity and force directions on used particles.

Published
2024
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18. IoT sensing node for Fe2O3 optical detection in liquid oil suspensions.

Author

Mateev, Valentin and Marinova, Iliana

Subjects
*INTERNET of things, *OPTICAL detectors, *INSULATING materials, *OPTICAL measurements, *LIQUIDS
Abstract

This paper presents IoT sensing node for Fe2O3 optical detection in liquid oil suspensions. The IoT node is based on LoRaWAN data transmission standard. The sensing node uses an optical detector for absorption index estimation in the liquid oil suspension depending on Fe2O3 content variation. The studies performed were in the wavelength range from 600 to 900 nm, where the most significant changes in the absorption spectrograms were observed. The obtained results can be used to detect contaminants in the composition of liquid insulation materials in small quantities. These contaminations are early indicators for possible malfunctioning and major failure in future. The applied photo-optical method is available for direct measurement of the optical properties of liquid insulating materials, also for continuous monitoring and online diagnostics of equipment without interrupting their normal operation. [ABSTRACT FROM AUTHOR]

Published
2024
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22. Fluid flow diffusion modelling with convolutional neural network aided method.

Author

Mateev, Valentin and Marinova, Iliana

Subjects
*CONVOLUTIONAL neural networks, *FLUID flow, *COMPUTATIONAL physics, *MACHINE learning, *DIRICHLET problem
Abstract

Here is presented a machine learning approach for 2D steady-state fluid gas diffusion field calculations based on Poisson equation for Dirichlet boundary problem. The approach is implemented by a multilayer convolutional neural network (CNN) architecture with output classification layer used as minimization acceptance criterion. Developed CNN architecture is presented, with field image stacks of training and testing data. CNN convergence dynamics is observed and estimated with relative error field differences. Possible applicability of the method for different physical fields modeling is discussed. Presented CNN machine is a step forward in advancement of machine learning methods in computational physics and numerical field modeling. [ABSTRACT FROM AUTHOR]

Published
2023
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23. Modified chromosome pooling genetic algorithm for resource allocation optimization.

Author

Mateev, Valentin and Marinova, Iliana

Subjects
*GERMPLASM, *RESOURCE allocation, *CHROMOSOMES, *BENCHMARK problems (Computer science)
Abstract

This paper presents an improved Genetic algorithm (GA) approach for resource allocation optimization. Modified chromosome pooling sub-stage for GA is proposed and tested on general algorithm performance. This sub-stage increases the combinatorial efficiency during GA chromosomes crossover and mutation. Modified chromosome pooling sub-stage for GA is suitable for structured topological optimization problems, with high order graphs. GA with modified chromosome pooling sub-stage is tested over the IEEE 13 Node Test Feeder, used as a benchmark problem for optimal power source distribution and control. Further development of this optimization GA approach can propose an efficient solution to other resource allocation optimization problems. The results obtained show the effectiveness of the proposed optimization model and influence of the combinatorial groups size and interconnection on general GA optimization performance. [ABSTRACT FROM AUTHOR]

Published
2023
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42. Atmospheric CO2 sources reconstruction method for ground-based sensor networks and remote imaging data.

Author

Mateev, Valentin and Marinova, Iliana

Subjects
*REAL-time computing, *WIND speed, *CARBON monoxide detectors
Abstract

Long-term accurate CO2 emission source location sensing and monitoring are difficult especially in heavy climate conditions, related with pressure, temperature variations and wind speed changes. In this paper is proposed a numerical reconstruction method for CO2 emission source location from locally measured data, provided by satellite and ground-based sensors. Reconstruction algorithm is based on fast interpolation technique very suitable for real-time data processing. The method characterizes with excellent gas source location selectivity, reduced number of sensors and therefor high measuring process efficiency. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Second order genetic algorithm for magnetic design optimization.

Author

Marinova, Iliana and Mateev, Valentin

Subjects
*GENETIC algorithms, *ARTIFICIAL neural networks, *ELECTROMAGNETIC devices, *MATHEMATICAL optimization
Abstract

This paper presents an artificial neural network (ANN) approach for design optimization of electromagnetic planar coil. Proposed method employs the ANN as an optimization problem parameters preselection. ANN is trained over selected chromosomes generations data provided by the genetic algorithm optimization method. This way ANN mimics the genetic algorithm control over the optimization process without internal preselection procedures typical for genetic algorithm. The results obtained for the magnetic planar high frequency coil design shows the effectiveness of the proposed optimization method. Further development of this optimization model can propose an efficient general solution to the electromagnetic device design problem from the same complexity class. [ABSTRACT FROM AUTHOR]

Published
2022
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44. Depth field reconstruction by shadow tomography for small digital microscope.

Author

Mateev, Valentin and Marinova, Iliana

Subjects
*TOMOGRAPHY, *OPTICAL images, *GEOMETRIC modeling, *OPTICAL microscopes, *MICROSCOPES, *OPTICAL tomography
Abstract

Depth and distance estimations are of paramount importance in many 2D and 3D vision applications. This paper proposes depth field reconstruction method for small digital microscopes based on optical shadow tomography. Multiple optical images from a single viewpoint and many different lighting directions are used in shadow tomography method. Numerical reconstruction algorithm for shadow tomography method is proposed. Reconstruction algorithm is relatively simple, it is suitable for automatic 2D/2.5D/3D geometric model building over reconstructed image results. The method is applicable for real time video reconstruction and also useful for small wearable and portable devises. [ABSTRACT FROM AUTHOR]

Published
2022
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