Pub Date : 2013-05-23DOI: 10.1109/SACI.2013.6608992
P. Butka, J. Pócsová, J. Pócs
In this paper we describe the possibility for usage of generalized version of one-sided (fuzzy) concept lattices, which represents analytical method from the area of Formal Concept Analysis (FCA), for joining of several simple object-attribute models. The main advantage of the algorithm for (so-called) Generalized One-sided Concept Lattices (GOSCL) is its possibility or ability to work with various attributes types. Sometimes, the analyst needs to join some object-attribute models into one comprehensive structure, he/she is able to do it using generalized FCA approach in two basic ways, which are described within the paper. Both approaches provides isomorphic outputs, but provision of information can be different due to usage of generalized attributes, what leads to benefits like better interpretation and understanding of output models and data.
{"title":"Use of generalized one-sided FCA approach for joining of simple object-attribute models","authors":"P. Butka, J. Pócsová, J. Pócs","doi":"10.1109/SACI.2013.6608992","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608992","url":null,"abstract":"In this paper we describe the possibility for usage of generalized version of one-sided (fuzzy) concept lattices, which represents analytical method from the area of Formal Concept Analysis (FCA), for joining of several simple object-attribute models. The main advantage of the algorithm for (so-called) Generalized One-sided Concept Lattices (GOSCL) is its possibility or ability to work with various attributes types. Sometimes, the analyst needs to join some object-attribute models into one comprehensive structure, he/she is able to do it using generalized FCA approach in two basic ways, which are described within the paper. Both approaches provides isomorphic outputs, but provision of information can be different due to usage of generalized attributes, what leads to benefits like better interpretation and understanding of output models and data.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129677259","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608939
P. Tóth
The realization of an adaptive online learning environment presupposes the full consideration of the existing knowledge of the individual and their learning characteristics both in the area of course as well as learning management. Therefore during the learning process diagnostic and formative control, evaluation and assessment, with web usage mining as an efficient means, has a special significance. Educational technology and multimedia, a course in technical teacher training, formed the basis of the study. By the application of web mining methods we were trying to find an answer to the question whether any conclusions from the patterns of online learning activities were to be drawn as to preferred learning characteristics, methods and strategies and also whether the major variables of online learning behavior were possible to define.
{"title":"Adaptive online learning environment and web usage mining","authors":"P. Tóth","doi":"10.1109/SACI.2013.6608939","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608939","url":null,"abstract":"The realization of an adaptive online learning environment presupposes the full consideration of the existing knowledge of the individual and their learning characteristics both in the area of course as well as learning management. Therefore during the learning process diagnostic and formative control, evaluation and assessment, with web usage mining as an efficient means, has a special significance. Educational technology and multimedia, a course in technical teacher training, formed the basis of the study. By the application of web mining methods we were trying to find an answer to the question whether any conclusions from the patterns of online learning activities were to be drawn as to preferred learning characteristics, methods and strategies and also whether the major variables of online learning behavior were possible to define.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128758730","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608950
A. Stînean, S. Preitl, R. Precup, C. Dragos, E. Petriu, M. Radac
The paper deals with control solutions for an electric drive system where the reference and the load disturbance are continuously variable and the plant has variable parameters. The main variable parameter of the process is the moment of inertia in the context of a system that corresponds to laboratory equipment. Using a detailed mathematical model of the process and the particular features of the drive system, the paper proposes variable control structures with switching between three or more control algorithms. This solution is preferred instead of a continuously parameter adaptation due to its simplicity in adaptation to the representative operating points. The control design results are focused on development of two-degree-of-freedom PID control solutions. The control solutions are applied in case studies based on digital simulation but, considering fixed values of the process parameters, they can be easily verified on laboratory equipment [1]. The proposed control solutions have a large applicability in the field of mechatronics systems, where such applications with variable moment of inertia and control system inputs are always present.
{"title":"2-DOF control solutions for an electric drive system under continuously variable conditions","authors":"A. Stînean, S. Preitl, R. Precup, C. Dragos, E. Petriu, M. Radac","doi":"10.1109/SACI.2013.6608950","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608950","url":null,"abstract":"The paper deals with control solutions for an electric drive system where the reference and the load disturbance are continuously variable and the plant has variable parameters. The main variable parameter of the process is the moment of inertia in the context of a system that corresponds to laboratory equipment. Using a detailed mathematical model of the process and the particular features of the drive system, the paper proposes variable control structures with switching between three or more control algorithms. This solution is preferred instead of a continuously parameter adaptation due to its simplicity in adaptation to the representative operating points. The control design results are focused on development of two-degree-of-freedom PID control solutions. The control solutions are applied in case studies based on digital simulation but, considering fixed values of the process parameters, they can be easily verified on laboratory equipment [1]. The proposed control solutions have a large applicability in the field of mechatronics systems, where such applications with variable moment of inertia and control system inputs are always present.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127556260","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608958
C. Căleanu
The huge research effort in the field of face expression recognition (FER) technology is justified by the potential applications in multiple domains: computer science, engineering, psychology, neuroscience, to name just a few. Obviously, this generates an impressive number of scientific publications. The aim of this paper is to identify key representative approaches for facial expression recognition research in the past ten years (2003-2012).
{"title":"Face expression recognition: A brief overview of the last decade","authors":"C. Căleanu","doi":"10.1109/SACI.2013.6608958","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608958","url":null,"abstract":"The huge research effort in the field of face expression recognition (FER) technology is justified by the potential applications in multiple domains: computer science, engineering, psychology, neuroscience, to name just a few. Obviously, this generates an impressive number of scientific publications. The aim of this paper is to identify key representative approaches for facial expression recognition research in the past ten years (2003-2012).","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121400430","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608973
N. Csik
This article introduces new and self-developed software based on photoplethysmographic methods which relies on the functions of the versatile, EDAQ530 sensor-to-USB interface. It offers monitoring of not only raw data obtained with finger photoplethysmography but also the markers relevant in ECG analysis derived from this data including instantaneous heart rate, heart rate variability and more. It can monitor the effects of physical exercise, stress, drugs over time, enabling us to perform exploratory measurements before more extensive research, correct measurements in real time or do demonstrations. Since the program (http://www.gamfelektro.hu/plethysmo) and the hardware documentation (http://www.inf.u-szeged.hu/noise/edudev/EDAQ530) are open source and freely available, it has the potential of becoming a significant tool in education and research.
{"title":"Open source plethysmographic application for monitoring of cardiovascular parameters","authors":"N. Csik","doi":"10.1109/SACI.2013.6608973","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608973","url":null,"abstract":"This article introduces new and self-developed software based on photoplethysmographic methods which relies on the functions of the versatile, EDAQ530 sensor-to-USB interface. It offers monitoring of not only raw data obtained with finger photoplethysmography but also the markers relevant in ECG analysis derived from this data including instantaneous heart rate, heart rate variability and more. It can monitor the effects of physical exercise, stress, drugs over time, enabling us to perform exploratory measurements before more extensive research, correct measurements in real time or do demonstrations. Since the program (http://www.gamfelektro.hu/plethysmo) and the hardware documentation (http://www.inf.u-szeged.hu/noise/edudev/EDAQ530) are open source and freely available, it has the potential of becoming a significant tool in education and research.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127226943","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608999
F. Moldovan, V. Dolga, C. Pop
A ten bar walking mechanism synthesis is presented. The method stated in this case is based on Freudestein equations which are frequently used for bar mechanism synthesis. Following the results of synthesis a CAD model has been achieved and a prototype of a mobile walking robot is described.
{"title":"Synthesis of an articulated ten bar mechanism for building a walking robot","authors":"F. Moldovan, V. Dolga, C. Pop","doi":"10.1109/SACI.2013.6608999","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608999","url":null,"abstract":"A ten bar walking mechanism synthesis is presented. The method stated in this case is based on Freudestein equations which are frequently used for bar mechanism synthesis. Following the results of synthesis a CAD model has been achieved and a prototype of a mobile walking robot is described.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134239535","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608980
I. Haragos, S. Holban, C. Cernazanu-Glavan
During the last period, road traffic has become one of the most studied topics. The main problem in urban transport network is congestion. Congestion is due to a several factors such as infrastructure, the ratio of the large number of vehicles and road network capacity as well as traffic signals mode. For this reason, several models have been developed in order to estimate the throughput value for a street or intersection. In this paper, we propose a new model to estimate the throughput for node of the network. This analytical model is developed based on existing elements in queueing theory. The model takes into account an attenuation factor that describes the quality of street/connection between network nodes, more precisely it shows the traffic status in analyzed section (traffic jam or traffic fluently).
{"title":"A model to estimate the throughput value for a transport network","authors":"I. Haragos, S. Holban, C. Cernazanu-Glavan","doi":"10.1109/SACI.2013.6608980","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608980","url":null,"abstract":"During the last period, road traffic has become one of the most studied topics. The main problem in urban transport network is congestion. Congestion is due to a several factors such as infrastructure, the ratio of the large number of vehicles and road network capacity as well as traffic signals mode. For this reason, several models have been developed in order to estimate the throughput value for a street or intersection. In this paper, we propose a new model to estimate the throughput for node of the network. This analytical model is developed based on existing elements in queueing theory. The model takes into account an attenuation factor that describes the quality of street/connection between network nodes, more precisely it shows the traffic status in analyzed section (traffic jam or traffic fluently).","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"21 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132399900","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 : 2013-05-23DOI: 10.1109/SACI.2013.6609014
L. Mihet-Popa, Xue Han, H. Bindner, J. Pihl-Andersen, J. Mehmedalic
This paper presents a low-voltage distribution grid model designed for a future smart grid based on real data. The grid model is built measuring the distribution lines' length and considering the cable dimensions and lengths, the grid age, the number of cabinets and customers and the load per customer. The aim of the model is to design, implement and test the proposed configuration and to investigate whether the low-voltage distributed grid is prepared for the expected future increase of PV penetration with heat pumps and electric cars connected along the feeders. The model is implemented in NEPLAN and Power Factory and different scenarios will be developed and analyzed. A time series simulation will also be presented for a specific scenario with a comparison between different voltage profiles along the feeder.
{"title":"Development and modeling of different scenarios for a smart distribution grid","authors":"L. Mihet-Popa, Xue Han, H. Bindner, J. Pihl-Andersen, J. Mehmedalic","doi":"10.1109/SACI.2013.6609014","DOIUrl":"https://doi.org/10.1109/SACI.2013.6609014","url":null,"abstract":"This paper presents a low-voltage distribution grid model designed for a future smart grid based on real data. The grid model is built measuring the distribution lines' length and considering the cable dimensions and lengths, the grid age, the number of cabinets and customers and the load per customer. The aim of the model is to design, implement and test the proposed configuration and to investigate whether the low-voltage distributed grid is prepared for the expected future increase of PV penetration with heat pumps and electric cars connected along the feeders. The model is implemented in NEPLAN and Power Factory and different scenarios will be developed and analyzed. A time series simulation will also be presented for a specific scenario with a comparison between different voltage profiles along the feeder.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116443824","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 : 2013-05-23DOI: 10.1109/SACI.2013.6609022
Doru Todinca, C. Cernazanu-Glavan
It is generally considered that the wireless networks of the future will consist of several radio access technologies. In this context, the vertical handover (VHO) decision algorithms will increase in importance and in complexity, and the study of these algorithms becomes a hot research topics. In this work we propose a high-level OMNeT++ framework that permits an efficient evaluation of various vertical handover algorithms. Our framework permits relatively short simulations, making it suitable for testing and evaluating different VHO algorithms. The framework can be easily extended by including new network selection algorithms and new radio access technologies.
{"title":"OMNeT++ framework for efficient simulation of vertical handover decision algorithms","authors":"Doru Todinca, C. Cernazanu-Glavan","doi":"10.1109/SACI.2013.6609022","DOIUrl":"https://doi.org/10.1109/SACI.2013.6609022","url":null,"abstract":"It is generally considered that the wireless networks of the future will consist of several radio access technologies. In this context, the vertical handover (VHO) decision algorithms will increase in importance and in complexity, and the study of these algorithms becomes a hot research topics. In this work we propose a high-level OMNeT++ framework that permits an efficient evaluation of various vertical handover algorithms. Our framework permits relatively short simulations, making it suitable for testing and evaluating different VHO algorithms. The framework can be easily extended by including new network selection algorithms and new radio access technologies.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115521238","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608951
D. Pescaru
Traffic congestion represents an important problem in crowded urban areas. It leads to travel delays, increased fuel consumption and higher level of pollution. This paper proposes a technique for congestion prediction in urban traffic. It uses event based routes selection and relies on information collected by a sensor network. Simulation experiments with more than 50 traffic patterns over eight crowded intersections demonstrate promising results.
{"title":"Urban traffic congestion prediction based on routes information","authors":"D. Pescaru","doi":"10.1109/SACI.2013.6608951","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608951","url":null,"abstract":"Traffic congestion represents an important problem in crowded urban areas. It leads to travel delays, increased fuel consumption and higher level of pollution. This paper proposes a technique for congestion prediction in urban traffic. It uses event based routes selection and relies on information collected by a sensor network. Simulation experiments with more than 50 traffic patterns over eight crowded intersections demonstrate promising results.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122993140","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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