Neural Field Equations (NFEs) are integrodifferential equations which describe the electric potential field and the interaction between neurons, in certain regions of the brain. They are becoming increasingly important for the interpretation of EEG, fMRi and optical imaging data. In the present article we describe a new efficient algorithm for the numerical simulation of two-dimensional neural fields with delays. The main features of this method are discussed and its performance is illustrated by some numerical examples.
{"title":"Numerical Investigation of the Two-Dimensioaln Neural Field Equation with Delay","authors":"P. Lima, E. Buckwar","doi":"10.1109/MCSI.2015.46","DOIUrl":"https://doi.org/10.1109/MCSI.2015.46","url":null,"abstract":"Neural Field Equations (NFEs) are integrodifferential equations which describe the electric potential field and the interaction between neurons, in certain regions of the brain. They are becoming increasingly important for the interpretation of EEG, fMRi and optical imaging data. In the present article we describe a new efficient algorithm for the numerical simulation of two-dimensional neural fields with delays. The main features of this method are discussed and its performance is illustrated by some numerical examples.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133880312","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}
M. Laviola, J. Ráfl, M. Rožánek, P. Kudrna, K. Roubík
Acute respiratory distress syndrome (ARDS) is an acute severe lung disease commonly encountered in intensive care units. High-frequency oscillatory ventilation (HFOV) could offer effective lung protective ventilation by delivering very low tidal volumes around constant relatively higher continuous distending pressure (CDP) at frequencies of 3 to 15 Hz. Optimization of CDP is not an easy task and it is titrated empirically in the clinical practice. The aim of this study is to investigate if the level of CDP affects the shape of the partial pressure of oxygen (PaO2) response of the organism to the CDP stepwise changes. Ten pigs were used in this study. In order to mimic ARDS, surfactant deficiency was induced by a double or triple lung lavage. Every 10 minutes, CDP was stepwise increased by 2 cmH2O. Increase in CDP was stopped when severe signs of hemodynamics deterioration were observed and then, CDP was stepwise decreased by 2 cmH2O to its initial value. For each CDP step performed, we fitted PaO2 with a one-term power model as follows: y=a·x b, where x is the time, a is the amplitude of the model and exponent b reflects the shape of the model. For values of PaO2200mmHg, PaO2 course follows a shape modelled exclusively by a root function. It is not possible to describe a relationship between the shape of the PaO2 course and the values of CDP. When alveoli are not recruited at all, oxygenation is more sensitive to changes in lung volume and aeration and thus, PaO2 grows or drops rapidly following linear and/or quadratic functions. Instead of, when alveoli are open and recruited changes in PaO2 are less sensitive to minor changes in lung aeration and thus, PaO2 grows and drops slower following only root function. The CDP level does not affect the response of organism in terms of shape change of PaO2, probably due to the fact that the recruitment occurs at different values in each pig.
{"title":"Models of a PaO2 Course during a Stepwise Change of Continuous Distending Pressure in HFOV","authors":"M. Laviola, J. Ráfl, M. Rožánek, P. Kudrna, K. Roubík","doi":"10.1109/MCSI.2015.43","DOIUrl":"https://doi.org/10.1109/MCSI.2015.43","url":null,"abstract":"Acute respiratory distress syndrome (ARDS) is an acute severe lung disease commonly encountered in intensive care units. High-frequency oscillatory ventilation (HFOV) could offer effective lung protective ventilation by delivering very low tidal volumes around constant relatively higher continuous distending pressure (CDP) at frequencies of 3 to 15 Hz. Optimization of CDP is not an easy task and it is titrated empirically in the clinical practice. The aim of this study is to investigate if the level of CDP affects the shape of the partial pressure of oxygen (PaO2) response of the organism to the CDP stepwise changes. Ten pigs were used in this study. In order to mimic ARDS, surfactant deficiency was induced by a double or triple lung lavage. Every 10 minutes, CDP was stepwise increased by 2 cmH2O. Increase in CDP was stopped when severe signs of hemodynamics deterioration were observed and then, CDP was stepwise decreased by 2 cmH2O to its initial value. For each CDP step performed, we fitted PaO2 with a one-term power model as follows: y=a·x b, where x is the time, a is the amplitude of the model and exponent b reflects the shape of the model. For values of PaO2200mmHg, PaO2 course follows a shape modelled exclusively by a root function. It is not possible to describe a relationship between the shape of the PaO2 course and the values of CDP. When alveoli are not recruited at all, oxygenation is more sensitive to changes in lung volume and aeration and thus, PaO2 grows or drops rapidly following linear and/or quadratic functions. Instead of, when alveoli are open and recruited changes in PaO2 are less sensitive to minor changes in lung aeration and thus, PaO2 grows and drops slower following only root function. The CDP level does not affect the response of organism in terms of shape change of PaO2, probably due to the fact that the recruitment occurs at different values in each pig.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121854205","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}
The steel structures are continuously developing by using improved materials or optimized profiles. The corrugated web beams are associated with the last category of optimized profiles but their response to elevated temperatures is less familiar. A different aspect ratio of the cross-section is given by the thin web, leading to particular phenomena regarding thermal and structural response. The paper discusses the behavior of corrugated web beams, subjected to elevated temperatures, analyzed in transient and steady-state procedure with a general purpose finite element code.
{"title":"The Effect of Transient Heat Transfer Analysis on Corrugated Web Beams","authors":"I. Both, F. Wald","doi":"10.1109/MCSI.2015.55","DOIUrl":"https://doi.org/10.1109/MCSI.2015.55","url":null,"abstract":"The steel structures are continuously developing by using improved materials or optimized profiles. The corrugated web beams are associated with the last category of optimized profiles but their response to elevated temperatures is less familiar. A different aspect ratio of the cross-section is given by the thin web, leading to particular phenomena regarding thermal and structural response. The paper discusses the behavior of corrugated web beams, subjected to elevated temperatures, analyzed in transient and steady-state procedure with a general purpose finite element code.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125150300","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}
V. Stefanidis, G. Anogianakis, A. Evangelou, M. Poulos
The aim of this paper is to find Neurophysiological (or Electrophysiological) indexes in order to analyze Unfiltered Multichannel Brain Evoked Potential Data. We use this indexes in order to identify and to predict difficulties in educational procedures. More specifically we use Global Field Power, an index that reflects the spatial standard deviation of evoked potentials in brain map. Also we use classification methods in order to find a proper mathematical model in order to predict these difficulties.
{"title":"Learning Difficulties Prediction Using Multichannel Brain Evoked Potential Data","authors":"V. Stefanidis, G. Anogianakis, A. Evangelou, M. Poulos","doi":"10.1109/MCSI.2015.40","DOIUrl":"https://doi.org/10.1109/MCSI.2015.40","url":null,"abstract":"The aim of this paper is to find Neurophysiological (or Electrophysiological) indexes in order to analyze Unfiltered Multichannel Brain Evoked Potential Data. We use this indexes in order to identify and to predict difficulties in educational procedures. More specifically we use Global Field Power, an index that reflects the spatial standard deviation of evoked potentials in brain map. Also we use classification methods in order to find a proper mathematical model in order to predict these difficulties.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"346 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121610909","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}
We are developing a freight management system that confirms the correctness of container handling during shipping. The system determines the correctness by comparing container handling, which is sensed by UHF RFID tags, with formal models (formulae) written in the Multiple Ambient Calculus(MAC). MAC is a formal description language extended from the Ambient Calculus(AC) in order to express freight systems with nested structures that dynamically change. Using MAC, whole the freight system is modeled by a set of formulae each of which represents the handling of each container while, using AC, the freight systems are modeled by a large formula. Thanks to this feature of MAC, we can express symmetric and concurrent property of freight systems more appropriately and adding or retracting formulae (representing adding or canceling containers for a voyage) becomes easier than using AC. This paper shows the implementation of the freight management system and the results of several experiments.
{"title":"Experiment of a Freight Management System with the Multiple Ambient Calculus","authors":"Toru Kato, A. Miyai, M. Higuchi","doi":"10.1109/MCSI.2015.32","DOIUrl":"https://doi.org/10.1109/MCSI.2015.32","url":null,"abstract":"We are developing a freight management system that confirms the correctness of container handling during shipping. The system determines the correctness by comparing container handling, which is sensed by UHF RFID tags, with formal models (formulae) written in the Multiple Ambient Calculus(MAC). MAC is a formal description language extended from the Ambient Calculus(AC) in order to express freight systems with nested structures that dynamically change. Using MAC, whole the freight system is modeled by a set of formulae each of which represents the handling of each container while, using AC, the freight systems are modeled by a large formula. Thanks to this feature of MAC, we can express symmetric and concurrent property of freight systems more appropriately and adding or retracting formulae (representing adding or canceling containers for a voyage) becomes easier than using AC. This paper shows the implementation of the freight management system and the results of several experiments.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"38 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121016726","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}
Main goal of this paper is to outline influence of architecture on availability and safety of Safety Related Control System using Safety PLC. We will describe types of architecture, SRCS, differences between regular and safety PLC, Safety Related Control Function and at the end we will outline Safe-SADT (structured analysis and design technique) method for design intelligent distributed control systems. Methods and knowledge gained in this article will be used in evaluation of one of our models for case studies.
{"title":"Influence of Architecture on Reliability and Safety of the SRCS with Safety PLC","authors":"P. Cuninka, P. Závacký, M. Strémy","doi":"10.1109/MCSI.2015.38","DOIUrl":"https://doi.org/10.1109/MCSI.2015.38","url":null,"abstract":"Main goal of this paper is to outline influence of architecture on availability and safety of Safety Related Control System using Safety PLC. We will describe types of architecture, SRCS, differences between regular and safety PLC, Safety Related Control Function and at the end we will outline Safe-SADT (structured analysis and design technique) method for design intelligent distributed control systems. Methods and knowledge gained in this article will be used in evaluation of one of our models for case studies.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129156092","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}
F. Frunzulică, I. Predoiu, M. Stoia, A. Dumitrache, C. Bulucea
In the last decades, the wind energy became more attractive to Romania, and thus many resources are allocated to develop the energetic systems based on wind energy. In this work we have investigated the possibility to harvest the wind energy with an actively controlled pitch-plunge aeroelastic system. The paper present some theoretical considerations and results regarding oscillating wing.
{"title":"Flapping Wing as an Alternative Method of Harvesting Energy from Wind","authors":"F. Frunzulică, I. Predoiu, M. Stoia, A. Dumitrache, C. Bulucea","doi":"10.1109/MCSI.2015.33","DOIUrl":"https://doi.org/10.1109/MCSI.2015.33","url":null,"abstract":"In the last decades, the wind energy became more attractive to Romania, and thus many resources are allocated to develop the energetic systems based on wind energy. In this work we have investigated the possibility to harvest the wind energy with an actively controlled pitch-plunge aeroelastic system. The paper present some theoretical considerations and results regarding oscillating wing.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132603531","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}
The multi-charge gun is barrel weapon system intended to attain high muzzle velocity by the means of refining ballistic pressure course. The internal processes of the gun were described mathematically and examined experimentally with positive results. The both numerical and simplified analytical analysis were carried out in order to specify design recommendations for maximal output of the multi-charge gun.
{"title":"Attainable Velocities by Multi-charge Gun","authors":"M. Kovářík","doi":"10.1109/MCSI.2015.23","DOIUrl":"https://doi.org/10.1109/MCSI.2015.23","url":null,"abstract":"The multi-charge gun is barrel weapon system intended to attain high muzzle velocity by the means of refining ballistic pressure course. The internal processes of the gun were described mathematically and examined experimentally with positive results. The both numerical and simplified analytical analysis were carried out in order to specify design recommendations for maximal output of the multi-charge gun.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"319 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124515072","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}
To solve the problem of unstable predicted results and poor generalization ability when a single extreme learning machine is treated as a classifier, this paper puts forward a classification algorithm using ensemble Extreme Learning Machine based on linear discriminant analysis. The main idea is applying linear discriminant analysis on each subset of the training samples generated by bootstrapping. By this way, a subset of the larger diversities can be got, which increases the diversity between each machine and reduces the ensemble generalization error and redundant data. Wavelet packet is used to extract features, and the proposed algorithm is used for EEG signal classification. The experiments results with the UCI datasets and another publicly available datasets show that compared with traditional methods and others, the proposed method can significantly improve the classification accuracy and stability, and produce better generalization performance.
{"title":"EEG Signals Classification Based on Wavelet Packet and Ensemble Extreme Learning Machine","authors":"Min Han, Zhuoran Sun, Jun Wang","doi":"10.1109/MCSI.2015.30","DOIUrl":"https://doi.org/10.1109/MCSI.2015.30","url":null,"abstract":"To solve the problem of unstable predicted results and poor generalization ability when a single extreme learning machine is treated as a classifier, this paper puts forward a classification algorithm using ensemble Extreme Learning Machine based on linear discriminant analysis. The main idea is applying linear discriminant analysis on each subset of the training samples generated by bootstrapping. By this way, a subset of the larger diversities can be got, which increases the diversity between each machine and reduces the ensemble generalization error and redundant data. Wavelet packet is used to extract features, and the proposed algorithm is used for EEG signal classification. The experiments results with the UCI datasets and another publicly available datasets show that compared with traditional methods and others, the proposed method can significantly improve the classification accuracy and stability, and produce better generalization performance.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127915632","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}
Numerical schemes based on the simulation of suitable Markov jump processes such as the stochastic direct simulation method and its improved variants have shown to be a good alternative to deterministic solvers when applied to semi-discrete approximations of time-dependent partial differential equations. Moreover, in contrast to deterministic explicit solvers, this class of methods turns out to be stable also on nonuniform grids, a feature which was demonstrated by applications to moving cell methods in one space dimension. In this paper we present a modified scheme based on the same basic principle, suited for approximating linearly implicit ordinary differential equations of the form Au' = F(u). They can arise for example in the context of finite-element discretizations of the corresponding partial differential equations. The results of the numerical experiments show that methods based on the principle of stochastic simulation are able to handle also this type of problems and can motivate further research in this direction, especially for more complex, higher-dimensional problems with relevant applications.
{"title":"Stochastic Simulation Method for Linearly Implicit Ordinary Differential Equations","authors":"Flavius Guias","doi":"10.1109/MCSI.2015.52","DOIUrl":"https://doi.org/10.1109/MCSI.2015.52","url":null,"abstract":"Numerical schemes based on the simulation of suitable Markov jump processes such as the stochastic direct simulation method and its improved variants have shown to be a good alternative to deterministic solvers when applied to semi-discrete approximations of time-dependent partial differential equations. Moreover, in contrast to deterministic explicit solvers, this class of methods turns out to be stable also on nonuniform grids, a feature which was demonstrated by applications to moving cell methods in one space dimension. In this paper we present a modified scheme based on the same basic principle, suited for approximating linearly implicit ordinary differential equations of the form Au' = F(u). They can arise for example in the context of finite-element discretizations of the corresponding partial differential equations. The results of the numerical experiments show that methods based on the principle of stochastic simulation are able to handle also this type of problems and can motivate further research in this direction, especially for more complex, higher-dimensional problems with relevant applications.","PeriodicalId":371635,"journal":{"name":"2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115847709","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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