Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042162
D. Cazacu, Radu Jubleanu, N. Bizon, Cristian Monea
In this paper a comparative analysis of the stored magnetic energy in cylindrical and toroidal superconducting magnetic coils is performed. For a fair comparison, similar dimensions are used for both coils (diameter and cross section), in analytical and numerical modeling. The numerical modeling has been performed using the finite element COMSOL Multiphysics® software. The energy stored in a toroidal coil is compared with an equivalent cylindrical coil and is shown to be higher with 65% and 57% using the analytical and numerical modeling, respectively. Also, the results have highlighted an error of 21 % and 3.7% for the analytical modeling compared to the numerical modeling in case of cylindrical and toroidal magnetic coils, respectively.
{"title":"Comparative numerical analysis of the stored magnetic energy in cylindrical and toroidal superconducting magnetic coils","authors":"D. Cazacu, Radu Jubleanu, N. Bizon, Cristian Monea","doi":"10.1109/ECAI46879.2019.9042162","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042162","url":null,"abstract":"In this paper a comparative analysis of the stored magnetic energy in cylindrical and toroidal superconducting magnetic coils is performed. For a fair comparison, similar dimensions are used for both coils (diameter and cross section), in analytical and numerical modeling. The numerical modeling has been performed using the finite element COMSOL Multiphysics® software. The energy stored in a toroidal coil is compared with an equivalent cylindrical coil and is shown to be higher with 65% and 57% using the analytical and numerical modeling, respectively. Also, the results have highlighted an error of 21 % and 3.7% for the analytical modeling compared to the numerical modeling in case of cylindrical and toroidal magnetic coils, respectively.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129435528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042107
E. Gati, Sotirios Kokosis, Nikolaos Patsourakis, S. Manias
In this work, the use of series compensation only in the primary side of an inductive charger for biomedical implantable devices is proposed, in order to minimize the component count of the implantable part of the system and increase its lifetime and reliability. Comparison with series-series compensation shows that the proposed topology is an equal substitute for the latter, in terms of output power, when operating at the natural resonant frequency. Simulation results validate the detailed theoretical analysis, suggesting that this is a promising alternative for contactless chargers for medical applications.
{"title":"Analysis of primary-side series compensation of inductive chargers for biomedical implantable devices","authors":"E. Gati, Sotirios Kokosis, Nikolaos Patsourakis, S. Manias","doi":"10.1109/ECAI46879.2019.9042107","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042107","url":null,"abstract":"In this work, the use of series compensation only in the primary side of an inductive charger for biomedical implantable devices is proposed, in order to minimize the component count of the implantable part of the system and increase its lifetime and reliability. Comparison with series-series compensation shows that the proposed topology is an equal substitute for the latter, in terms of output power, when operating at the natural resonant frequency. Simulation results validate the detailed theoretical analysis, suggesting that this is a promising alternative for contactless chargers for medical applications.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128065142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042159
M. Kadar, Daniela Onita
Computer vision is widely used in control of manufacturing processes. However, due to the relatively high costs, automated visual inspection is applied only for the final product and not after each production phase. Faulty products are identified at the end of the production pipeline, little information is provided with regard the causes and the production phase that produced the defect products. This paper presents a deep CNN for the enhancement of the computer vision system by providing additional information on the type of the product and consequently on the production phase that generated that product, and fault, respectively. The CNN has been integrated into the pipeline for the automated process control. This information is important for further decision makings in production flow management. The paper presents full description of the deep CNN model design with discussions based on image analytics carried out on 12k database of images of products from the porcelain industry.
{"title":"A deep CNN for Image Analytics in Automated Manufacturing Process Control","authors":"M. Kadar, Daniela Onita","doi":"10.1109/ECAI46879.2019.9042159","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042159","url":null,"abstract":"Computer vision is widely used in control of manufacturing processes. However, due to the relatively high costs, automated visual inspection is applied only for the final product and not after each production phase. Faulty products are identified at the end of the production pipeline, little information is provided with regard the causes and the production phase that produced the defect products. This paper presents a deep CNN for the enhancement of the computer vision system by providing additional information on the type of the product and consequently on the production phase that generated that product, and fault, respectively. The CNN has been integrated into the pipeline for the automated process control. This information is important for further decision makings in production flow management. The paper presents full description of the deep CNN model design with discussions based on image analytics carried out on 12k database of images of products from the porcelain industry.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124541186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042039
Chaima Ghanjati, S. Mansouri, S. Tnani, J. Belhaj, H. Cherif
Control of hybrid energy systems in presence of disturbances due to renewable power generators is key issue that must be focused on in order to achieve an optimum power system. Indeed, the questions arise about the preferred configuration to use (AC coupled or DC coupled), the storage devices to adopt, and the control strategy to apply. A hybrid Energy Storage System (ESS) using batteries and supercapacitors (SC) seems to be a good device to answer the second constraint. The objective of the paper is to study the influence of the control strategy for a hybrid ESS using DC coupled configuration and the control strategy for ESS only composed of SC using AC coupled configuration.
{"title":"Hybrid systems for electrical generation with energy storage","authors":"Chaima Ghanjati, S. Mansouri, S. Tnani, J. Belhaj, H. Cherif","doi":"10.1109/ECAI46879.2019.9042039","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042039","url":null,"abstract":"Control of hybrid energy systems in presence of disturbances due to renewable power generators is key issue that must be focused on in order to achieve an optimum power system. Indeed, the questions arise about the preferred configuration to use (AC coupled or DC coupled), the storage devices to adopt, and the control strategy to apply. A hybrid Energy Storage System (ESS) using batteries and supercapacitors (SC) seems to be a good device to answer the second constraint. The objective of the paper is to study the influence of the control strategy for a hybrid ESS using DC coupled configuration and the control strategy for ESS only composed of SC using AC coupled configuration.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131506217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042014
George Cosmin Stănică, P. Anghelescu
This paper presents a software solution for managing a publishing company. The application provides features such as: Managing employees and clients, processing orders and generating invoices, administration of products and generating warnings concerning low stock. Users may access the application by credentials each having different rights according on them. The system is developed for processing a large amount of data, offering solutions based on simple analysis models. All the algorithms and results obtained are developed and tested using the C# programming language and a database created with SQL Server used for data storage.
{"title":"Management software for a publishing company","authors":"George Cosmin Stănică, P. Anghelescu","doi":"10.1109/ECAI46879.2019.9042014","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042014","url":null,"abstract":"This paper presents a software solution for managing a publishing company. The application provides features such as: Managing employees and clients, processing orders and generating invoices, administration of products and generating warnings concerning low stock. Users may access the application by credentials each having different rights according on them. The system is developed for processing a large amount of data, offering solutions based on simple analysis models. All the algorithms and results obtained are developed and tested using the C# programming language and a database created with SQL Server used for data storage.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126961112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042141
O. Novac, Iulian-Ioan Mureşan, C. Novac, M. Oproescu, C. Gordan, G. Bujdosó
This paper is meant for a better understanding of the main mobile operating systems, Android and iOS, and the overall development of a weather application, determining the strengths and flaws of each platform. The goal is to provide a detailed study of the two mobile platforms, how they work, their market share and the time and costs needed for development.
{"title":"Development of a Weather Application in Android and iOS Operating Systems","authors":"O. Novac, Iulian-Ioan Mureşan, C. Novac, M. Oproescu, C. Gordan, G. Bujdosó","doi":"10.1109/ECAI46879.2019.9042141","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042141","url":null,"abstract":"This paper is meant for a better understanding of the main mobile operating systems, Android and iOS, and the overall development of a weather application, determining the strengths and flaws of each platform. The goal is to provide a detailed study of the two mobile platforms, how they work, their market share and the time and costs needed for development.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121920407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042062
M. Marcu, F. Popescu, B. L. Samoila, R. Slusariuc, T. Niculescu
It is well known that solar radiation can vary considerably over the course of a day or from one day to the next. In this paper we are presenting the design of a simple MPPT (Maximum Power Point Tracker) charge controller based on perturb and observe algorithm embedded into Atmega 2560 microcontroller. The voltage of the solar cell that operates at its maximum power point at 25C°, which is the standard temperature for testing, is higher than the voltage of battery. While solar panel temperature goes down, the voltage goes up. Therefore, the microcontroller with the MPP algorithm is able to capture the surplus energy and inject it into the accumulator. So, during the colder periods of the year (or the day), a MPPT controlled solar panel can generate up to 30% more energy than during warmer periods. The charge controller will use the microcontroller, DC-DC buck boost circuit, sensors that will read the electrical information from the photovoltaic panel and the battery.
{"title":"Performance Improvement of a Photovoltaic System Using a Programmable Microcontroller","authors":"M. Marcu, F. Popescu, B. L. Samoila, R. Slusariuc, T. Niculescu","doi":"10.1109/ECAI46879.2019.9042062","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042062","url":null,"abstract":"It is well known that solar radiation can vary considerably over the course of a day or from one day to the next. In this paper we are presenting the design of a simple MPPT (Maximum Power Point Tracker) charge controller based on perturb and observe algorithm embedded into Atmega 2560 microcontroller. The voltage of the solar cell that operates at its maximum power point at 25C°, which is the standard temperature for testing, is higher than the voltage of battery. While solar panel temperature goes down, the voltage goes up. Therefore, the microcontroller with the MPP algorithm is able to capture the surplus energy and inject it into the accumulator. So, during the colder periods of the year (or the day), a MPPT controlled solar panel can generate up to 30% more energy than during warmer periods. The charge controller will use the microcontroller, DC-DC buck boost circuit, sensors that will read the electrical information from the photovoltaic panel and the battery.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124144093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042013
Balduino Estison Mugilila Camachi, D. Popescu, L. Ichim
The purpose of this paper is to illustrate the vulnerabilities found through the studies, mainly through the methods of preventing an attack of a Smart Grid. Having a contingency plan of attacks is not something complex and should be part of everyday business, it's wrong to think that answering a security incident only happens in cases of mega attacks, such as WannaCry. Any Security threat must be taken seriously, no matter how small the threat is, because the threat might just be a test of vulnerability. The main goal of this article is to prevent cyber-attacks of Smart Grid using MAC Value Analysis. On this article the goal is to protect the network from these attacks.
{"title":"Smart Grid Protection using MAC Value Analysis","authors":"Balduino Estison Mugilila Camachi, D. Popescu, L. Ichim","doi":"10.1109/ECAI46879.2019.9042013","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042013","url":null,"abstract":"The purpose of this paper is to illustrate the vulnerabilities found through the studies, mainly through the methods of preventing an attack of a Smart Grid. Having a contingency plan of attacks is not something complex and should be part of everyday business, it's wrong to think that answering a security incident only happens in cases of mega attacks, such as WannaCry. Any Security threat must be taken seriously, no matter how small the threat is, because the threat might just be a test of vulnerability. The main goal of this article is to prevent cyber-attacks of Smart Grid using MAC Value Analysis. On this article the goal is to protect the network from these attacks.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127637392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042148
Andreea Nedelcu, Bogdan Nedelcu, I. Sgârciu, V. Sgârciu
The article shows the complexity of the human resource field, offering an insight on the issues that many decision makers are facing, in a world where any software solution designed to offer value, is no longer viable without big data capabilities. This paper's main objective is to prove the importance of mining human resource data by proving its accuracy. Furthermore, such a way of mining big data can be a starting point for more intelligent systems that could offer decision makers valuable real-time information. The study shows an objective view on how accurate the public available web search data is and how it can be mined for achieving valuable information for HR.
{"title":"Mining Data for Human Resources","authors":"Andreea Nedelcu, Bogdan Nedelcu, I. Sgârciu, V. Sgârciu","doi":"10.1109/ECAI46879.2019.9042148","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042148","url":null,"abstract":"The article shows the complexity of the human resource field, offering an insight on the issues that many decision makers are facing, in a world where any software solution designed to offer value, is no longer viable without big data capabilities. This paper's main objective is to prove the importance of mining human resource data by proving its accuracy. Furthermore, such a way of mining big data can be a starting point for more intelligent systems that could offer decision makers valuable real-time information. The study shows an objective view on how accurate the public available web search data is and how it can be mined for achieving valuable information for HR.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127335395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-01DOI: 10.1109/ECAI46879.2019.9042112
Marius Alexandru Dinca, N. Angelescu, Radu-Alexandru Dragomir, D. Puchianu, I. Caciula
Digital Media Distribution platforms are necessary for delivering multimedia content. Classic client-server approaches and 3-tier architectures are not optimized for media processing. In this paper, we present a serverless modern digital media platform for media content distribution based on the Amazon Web Services (AWS) cloud platform. The proposed platform uses CloudFront for static content cashing, S3 for data storage, Lambda for the dynamic content and Elastic Transcoder for media format conversion. This platform offers reduced loading times and efficient media format conversion/distribution.
{"title":"Digital Media Distribution Platform Using Amazon Web Services","authors":"Marius Alexandru Dinca, N. Angelescu, Radu-Alexandru Dragomir, D. Puchianu, I. Caciula","doi":"10.1109/ECAI46879.2019.9042112","DOIUrl":"https://doi.org/10.1109/ECAI46879.2019.9042112","url":null,"abstract":"Digital Media Distribution platforms are necessary for delivering multimedia content. Classic client-server approaches and 3-tier architectures are not optimized for media processing. In this paper, we present a serverless modern digital media platform for media content distribution based on the Amazon Web Services (AWS) cloud platform. The proposed platform uses CloudFront for static content cashing, S3 for data storage, Lambda for the dynamic content and Elastic Transcoder for media format conversion. This platform offers reduced loading times and efficient media format conversion/distribution.","PeriodicalId":285780,"journal":{"name":"2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133645795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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