Pub Date : 2014-11-01DOI: 10.1109/AIEEE.2014.7020321
A. Dolgicers, J. Kozadajevs
This paper presents the convergence analysis of Seidel method for solving power systems automatic tasks. In a condition of use of Programmable logical controllers with low capacity as a hardware, algorithm solution based on Seidel method have some advantages, such as memory saving. However, there are some limits for Seidel method convergence. If the electrical network condition is close to resonance there will be no assurance that Seidel method will converge. As a result of made experiments we can conclude that usage of relaxation method in conjunction with convergence control on the phase plane allows to solve network analysis problem with nonexpansible hardware.
{"title":"Phase plane usage for convergence analysis of Seidel method applied for network analysis","authors":"A. Dolgicers, J. Kozadajevs","doi":"10.1109/AIEEE.2014.7020321","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020321","url":null,"abstract":"This paper presents the convergence analysis of Seidel method for solving power systems automatic tasks. In a condition of use of Programmable logical controllers with low capacity as a hardware, algorithm solution based on Seidel method have some advantages, such as memory saving. However, there are some limits for Seidel method convergence. If the electrical network condition is close to resonance there will be no assurance that Seidel method will converge. As a result of made experiments we can conclude that usage of relaxation method in conjunction with convergence control on the phase plane allows to solve network analysis problem with nonexpansible hardware.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129924146","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020316
Andis Āriņš
Current Border Gateway Protocol (BGP) serves for worldwide internet backbone connections between different Autonomous Systems (AS) on the routing level. Continuously in real-time changing environment core routers calculate routing decisions based on path-vector database entries. AS path-vector database may contain multiple paths for various Internet Protocol (IP) prefix destinations where smallest entity in the path-vector is AS. In real world AS can be internet service operator, university or any other organization willing to participate in internet network via multi-homed uplinks. Unfortunately, internal part of AS is hidden in path-vector database thus excluding factors like latency, packet loss or throughput from influencing routing decisions. With easier virtual presence possibilities leading European internet operators has direct BGP connections called peering with mostly every other largest operators thus narrowing routing decision objectivity because mostly routing decisions are taken based on AS path length which tends to one. In this paper, a method of measuring latency is proposed and analyzed through lab measurements. The results of this study permit to discuss about requirements and possibilities to extrapolate this technique from small testbed to worldwide routed networks.
{"title":"Latency factor in worldwide IP routed networks","authors":"Andis Āriņš","doi":"10.1109/AIEEE.2014.7020316","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020316","url":null,"abstract":"Current Border Gateway Protocol (BGP) serves for worldwide internet backbone connections between different Autonomous Systems (AS) on the routing level. Continuously in real-time changing environment core routers calculate routing decisions based on path-vector database entries. AS path-vector database may contain multiple paths for various Internet Protocol (IP) prefix destinations where smallest entity in the path-vector is AS. In real world AS can be internet service operator, university or any other organization willing to participate in internet network via multi-homed uplinks. Unfortunately, internal part of AS is hidden in path-vector database thus excluding factors like latency, packet loss or throughput from influencing routing decisions. With easier virtual presence possibilities leading European internet operators has direct BGP connections called peering with mostly every other largest operators thus narrowing routing decision objectivity because mostly routing decisions are taken based on AS path length which tends to one. In this paper, a method of measuring latency is proposed and analyzed through lab measurements. The results of this study permit to discuss about requirements and possibilities to extrapolate this technique from small testbed to worldwide routed networks.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128738566","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020332
D. Liaukonis, A. Aleksandrovas, L. Svilainis
Procedure for dual component epoxy cure monitoring is presented. Accurate time of flight estimation was used employing the correlation processing. Several spread spectrum signals have been put in comparison with conventional pulse and toneburst signals. Experimental results presented indicate that reliable separation of curing phases can be established using both ultrasound velocity and attenuation measurements. Lowest velocity variation was produced by 4 MHz toneburst signal.
{"title":"Epoxy cure monitoring using ultrasonic spread spectrum binary signals","authors":"D. Liaukonis, A. Aleksandrovas, L. Svilainis","doi":"10.1109/AIEEE.2014.7020332","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020332","url":null,"abstract":"Procedure for dual component epoxy cure monitoring is presented. Accurate time of flight estimation was used employing the correlation processing. Several spread spectrum signals have been put in comparison with conventional pulse and toneburst signals. Experimental results presented indicate that reliable separation of curing phases can be established using both ultrasound velocity and attenuation measurements. Lowest velocity variation was produced by 4 MHz toneburst signal.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122552515","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020330
Ģ. Staņa, P. Apse-Apsitis, V. Brazis
This paper describes a stationary bench simulating the traction drive of electric transport vehicles in traction, freewheeling and braking modes which is planned to investigate the drive operation with and without a supercapacitor energy storage system. The bench contains two equal coupled AC motors simulating the traction drive of surface electric transport and the traction drive load. Before the physical realization of the bench it is necessary to design its virtual model for simulations in order to make sure that it functions as needed. The simulation of the drive operation modes is performed using Matlab/Simulink software.
{"title":"Virtual energy simulation of induction traction drive test bench","authors":"Ģ. Staņa, P. Apse-Apsitis, V. Brazis","doi":"10.1109/AIEEE.2014.7020330","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020330","url":null,"abstract":"This paper describes a stationary bench simulating the traction drive of electric transport vehicles in traction, freewheeling and braking modes which is planned to investigate the drive operation with and without a supercapacitor energy storage system. The bench contains two equal coupled AC motors simulating the traction drive of surface electric transport and the traction drive load. Before the physical realization of the bench it is necessary to design its virtual model for simulations in order to make sure that it functions as needed. The simulation of the drive operation modes is performed using Matlab/Simulink software.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116942922","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020324
Romualds Bogdanovics, M. Makarova
This paper present one-winding Magnetically Controlled Shunt Reactors (MCSR) dual model. Principles of the MCSR dual scheme creation as thyristor-controlled reactor are explained. Modeling MCSR and its dual model is done. Results of modeling are compared and harmonical analyses are done.
{"title":"Dual model of single-winding magnetically Controlled Shunt Reactor","authors":"Romualds Bogdanovics, M. Makarova","doi":"10.1109/AIEEE.2014.7020324","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020324","url":null,"abstract":"This paper present one-winding Magnetically Controlled Shunt Reactors (MCSR) dual model. Principles of the MCSR dual scheme creation as thyristor-controlled reactor are explained. Modeling MCSR and its dual model is done. Results of modeling are compared and harmonical analyses are done.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133816630","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020325
Donatas Sederevičius, M. Meilūnas, A. Ušinskas, J. Usinskiene
In the paper two models of the brain perfusion for dynamic susceptibility contrast magnetic resonance imaging technique are introduced. Estimation of the cerebral perfusion parameters is done by two approaches. Both approaches are based on non-linear regression method. Parametric maps of perfusion parameters are given and compared. In conclusion it is resumed what factors can effect the final results.
{"title":"Modelling of the MRI perfusion process of human head","authors":"Donatas Sederevičius, M. Meilūnas, A. Ušinskas, J. Usinskiene","doi":"10.1109/AIEEE.2014.7020325","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020325","url":null,"abstract":"In the paper two models of the brain perfusion for dynamic susceptibility contrast magnetic resonance imaging technique are introduced. Estimation of the cerebral perfusion parameters is done by two approaches. Both approaches are based on non-linear regression method. Parametric maps of perfusion parameters are given and compared. In conclusion it is resumed what factors can effect the final results.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114616888","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020319
Julija Ovcinnikova, Kārlis Čerāns, Renars Liepins
A grammar based content completion method for Lua programming language and its LPeg.re module environment is described in this paper. The use of our method is not demanding in computing resources, as well as it is easy to add the content completion functionality to any target language grammar. We report on the application of our method for OWL Manchester syntax expression grammar, as well as custom database-to-ontology mapping language.
{"title":"Grammar based content completion method using Lua LPeg.re module","authors":"Julija Ovcinnikova, Kārlis Čerāns, Renars Liepins","doi":"10.1109/AIEEE.2014.7020319","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020319","url":null,"abstract":"A grammar based content completion method for Lua programming language and its LPeg.re module environment is described in this paper. The use of our method is not demanding in computing resources, as well as it is easy to add the content completion functionality to any target language grammar. We report on the application of our method for OWL Manchester syntax expression grammar, as well as custom database-to-ontology mapping language.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126962954","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020317
Rudolfs Bundulis, G. Arnicans
This paper presents the scalability and hardware dependency problems found in existing solutions in the high resolution display wall domain and proposes a new solution. Authors propose hosting the system that provides the visual content for the display wall inside a virtual machine. In such way any needed configuration of displays and resolutions can be applied to the graphics processing unit simulated by the virtualization system. The frame buffer content of the virtual graphics processing unit is then split, encoded with H.264 and sent over gigabit Ethernet as an RTP stream to the display wall. The display wall is driven by Raspberry Pi embedded devices that receive the stream, decode it and send digital video signal to the displays. This paper describes the construction of a prototype for this architecture and provides preliminary results that prove the potential of this solution.
{"title":"Concept of virtual machine based high resolution display wall","authors":"Rudolfs Bundulis, G. Arnicans","doi":"10.1109/AIEEE.2014.7020317","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020317","url":null,"abstract":"This paper presents the scalability and hardware dependency problems found in existing solutions in the high resolution display wall domain and proposes a new solution. Authors propose hosting the system that provides the visual content for the display wall inside a virtual machine. In such way any needed configuration of displays and resolutions can be applied to the graphics processing unit simulated by the virtualization system. The frame buffer content of the virtual graphics processing unit is then split, encoded with H.264 and sent over gigabit Ethernet as an RTP stream to the display wall. The display wall is driven by Raspberry Pi embedded devices that receive the stream, decode it and send digital video signal to the displays. This paper describes the construction of a prototype for this architecture and provides preliminary results that prove the potential of this solution.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114378338","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 : 2014-11-01DOI: 10.1109/AIEEE.2014.7020318
Vita Jasevičiūtė, D. Plonis, A. Serackis
Paper presents a new algorithm proposed to dynamically adapt jitter buffer, used in video transcoding applications. When the video content provider is moving continuously, the wireless network connectivity conditions changes in time. The resulting jitter should be compensated in video transcoder by selecting jitter buffer high enough to compensate all possible jitter variations. The algorithm, proposed in this paper updates the jitter buffer according to current jitter measurements and jitter prediction results in order to reduce the total latency of the video transcoding in live transmissions.
{"title":"Dynamic adaptation of the jitter buffer for video streaming applications","authors":"Vita Jasevičiūtė, D. Plonis, A. Serackis","doi":"10.1109/AIEEE.2014.7020318","DOIUrl":"https://doi.org/10.1109/AIEEE.2014.7020318","url":null,"abstract":"Paper presents a new algorithm proposed to dynamically adapt jitter buffer, used in video transcoding applications. When the video content provider is moving continuously, the wireless network connectivity conditions changes in time. The resulting jitter should be compensated in video transcoder by selecting jitter buffer high enough to compensate all possible jitter variations. The algorithm, proposed in this paper updates the jitter buffer according to current jitter measurements and jitter prediction results in order to reduce the total latency of the video transcoding in live transmissions.","PeriodicalId":117147,"journal":{"name":"2014 IEEE 2nd Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131640367","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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