Pub Date : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632046
D. Sendrescu, E. Bobaşu, D. Popescu
A metaheuristic is a general algorithmic framework which can be applied to different optimization problems with relative few modifications to make them adapted to a specific problem. This work describes a dynamic mathematical model for a bioprocess, which takes place into a Continuous Stirred Tank Bioreactor with delay in the recycle stream, containing four unknown parameters, which were calibrated using particle swarm optimization through the minimization of an evaluation function. Two kinetic expressions, the Monod and Haldane equations, commonly employed to describe microbial growth were tested in the model simulations. The identification problem is formulated as a multi-modal numerical optimization problem with high dimension. The performances of the identification methods are analyzed by numerical simulations.
{"title":"Identification techniques based on heuristic optimization for propagation processes","authors":"D. Sendrescu, E. Bobaşu, D. Popescu","doi":"10.1109/IcConSCS.2013.6632046","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632046","url":null,"abstract":"A metaheuristic is a general algorithmic framework which can be applied to different optimization problems with relative few modifications to make them adapted to a specific problem. This work describes a dynamic mathematical model for a bioprocess, which takes place into a Continuous Stirred Tank Bioreactor with delay in the recycle stream, containing four unknown parameters, which were calibrated using particle swarm optimization through the minimization of an evaluation function. Two kinetic expressions, the Monod and Haldane equations, commonly employed to describe microbial growth were tested in the model simulations. The identification problem is formulated as a multi-modal numerical optimization problem with high dimension. The performances of the identification methods are analyzed by numerical simulations.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131811442","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632028
A. Olteanu, D. Tudose, N. Tapus
This paper describes the design of energy-efficient wide spectrum mechanisms and protocols to capture context information and employ actuation to close the feedback loop. The project described in this article focuses on harvesting energy from the environment through as many ways as possible, and efficiently using the harvested energy in off-grid buildings, dynamically adapting the consumption to currently available energy levels. The main energy sources to be used for harvesting are: solar energy, wind energy, wasted wireless communication energy and hydro energy. Through its web and Android interfaces, the project offers functionalities such as analyzing energy harvesting efficiency, monitoring building-wide energy consumption, setting up profiles and managing consumers individually.
{"title":"Energy-efficient user interaction with an off-grid building","authors":"A. Olteanu, D. Tudose, N. Tapus","doi":"10.1109/IcConSCS.2013.6632028","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632028","url":null,"abstract":"This paper describes the design of energy-efficient wide spectrum mechanisms and protocols to capture context information and employ actuation to close the feedback loop. The project described in this article focuses on harvesting energy from the environment through as many ways as possible, and efficiently using the harvested energy in off-grid buildings, dynamically adapting the consumption to currently available energy levels. The main energy sources to be used for harvesting are: solar energy, wind energy, wasted wireless communication energy and hydro energy. Through its web and Android interfaces, the project offers functionalities such as analyzing energy harvesting efficiency, monitoring building-wide energy consumption, setting up profiles and managing consumers individually.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130697301","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632056
S. A. Tchenderli-Braham, F. Hamerlain
In this paper we propose to solve the problem of stability and robustness for a trajectory tracking control applied to a bi-steerable mobile robot (Bis-Car) by using a discontinuous hybrid control law. This control is developed from the principles of methods of classic sliding mode and Backstepping. The robustness and the applicability of this control law are shown by simulation and experimentation results.
{"title":"Trajectory tracking with a hybrid control applied to a bi-steerable car","authors":"S. A. Tchenderli-Braham, F. Hamerlain","doi":"10.1109/IcConSCS.2013.6632056","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632056","url":null,"abstract":"In this paper we propose to solve the problem of stability and robustness for a trajectory tracking control applied to a bi-steerable mobile robot (Bis-Car) by using a discontinuous hybrid control law. This control is developed from the principles of methods of classic sliding mode and Backstepping. The robustness and the applicability of this control law are shown by simulation and experimentation results.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116281709","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632042
C. Giovannella
The increasing smarteness of personal devices and territories are rapidly changing the scenarios of data production. Data access and/or data possession can determine positions of privilege, but the real competitive advantage will derive more and more from the ability to identify relevant dimensions and flows and, of course, from that to extract meaningful multidimensional descriptions aimed at detecting and foreseeing emergent behaviors (particularly relevant those concerning small communities) or, in other words, from the ability to transform “big data” into”smart data”. Prerequisite for obtaining this goal is the identification of appropriate models and adequate spaces of representation that may inspire the development of appropriate strategies and methods of analysis. Few examples will be provided.
{"title":"“Territorial smartness” and emergent behaviors","authors":"C. Giovannella","doi":"10.1109/IcConSCS.2013.6632042","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632042","url":null,"abstract":"The increasing smarteness of personal devices and territories are rapidly changing the scenarios of data production. Data access and/or data possession can determine positions of privilege, but the real competitive advantage will derive more and more from the ability to identify relevant dimensions and flows and, of course, from that to extract meaningful multidimensional descriptions aimed at detecting and foreseeing emergent behaviors (particularly relevant those concerning small communities) or, in other words, from the ability to transform “big data” into”smart data”. Prerequisite for obtaining this goal is the identification of appropriate models and adequate spaces of representation that may inspire the development of appropriate strategies and methods of analysis. Few examples will be provided.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127337560","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632054
Claudia Cardei, Filip Manisor, Traian Rebedea
Although opinion mining solutions with good performance exist for English, it is much more difficult to develop an effective solution for other languages. Moreover, even in English the results deteriorate strongly if the texts that are processed are from a variety of contexts (domains, sources, etc.) We present the preliminary results of several experiments with a system that uses machine learning in order to identify opinions in a corpus in Romanian that was manually annotated. This dataset contains texts from a wide range of sources: popular social networking sites, blogs, comments, news providers and online forums.
{"title":"Opinion mining for social media and news items in Romanian","authors":"Claudia Cardei, Filip Manisor, Traian Rebedea","doi":"10.1109/IcConSCS.2013.6632054","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632054","url":null,"abstract":"Although opinion mining solutions with good performance exist for English, it is much more difficult to develop an effective solution for other languages. Moreover, even in English the results deteriorate strongly if the texts that are processed are from a variety of contexts (domains, sources, etc.) We present the preliminary results of several experiments with a system that uses machine learning in order to identify opinions in a corpus in Romanian that was manually annotated. This dataset contains texts from a wide range of sources: popular social networking sites, blogs, comments, news providers and online forums.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133820059","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632019
A. Maciuca, G. Stamatescu, D. Popescu, M. Strutu
The current paper proposes a hybrid sensor network for indoor monitoring and discusses the way both body and ambient wireless sensors are integrated into this network. A multi-level system architecture is described which relays acquired data and alerts to relevant third parties. Its main purpose is to build a system that monitors the house of a patient and is capable of collecting data from all the nodes. The system contains ambient sensors that monitor temperature, humidity, pressure and light. Beside the ambient sensors, the network also contains body sensors situated on the patient that monitor different health parameters like temperature, heart rate and motion capture. Efficient correlation among the two data-sets can lead to rapid response in case of an emergency with a high degree of autonomy and independent living for the patient.
{"title":"Integrating wireless body and ambient sensors into a hybrid femtocell network for home monitoring","authors":"A. Maciuca, G. Stamatescu, D. Popescu, M. Strutu","doi":"10.1109/IcConSCS.2013.6632019","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632019","url":null,"abstract":"The current paper proposes a hybrid sensor network for indoor monitoring and discusses the way both body and ambient wireless sensors are integrated into this network. A multi-level system architecture is described which relays acquired data and alerts to relevant third parties. Its main purpose is to build a system that monitors the house of a patient and is capable of collecting data from all the nodes. The system contains ambient sensors that monitor temperature, humidity, pressure and light. Beside the ambient sensors, the network also contains body sensors situated on the patient that monitor different health parameters like temperature, heart rate and motion capture. Efficient correlation among the two data-sets can lead to rapid response in case of an emergency with a high degree of autonomy and independent living for the patient.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115336717","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632053
Costin-Gabriel Chiru, Asmelash Teka Hadgu
In this paper, we present a text segmentation system based on the sentiments expressed in the text. The system takes as input plain text (product review for instance) and uses two different resources for tagging the sentiment words: a sentiment words dictionary and SentiWordNet. Once the sentiment words are identified, the initial text is annotated with segmentation markers when polarity shifts. The system also outputs the counts of positive and negative sentiment words found in text and optionally annotates them with their valence.
{"title":"Sentiment-based text segmentation","authors":"Costin-Gabriel Chiru, Asmelash Teka Hadgu","doi":"10.1109/IcConSCS.2013.6632053","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632053","url":null,"abstract":"In this paper, we present a text segmentation system based on the sentiments expressed in the text. The system takes as input plain text (product review for instance) and uses two different resources for tagging the sentiment words: a sentiment words dictionary and SentiWordNet. Once the sentiment words are identified, the initial text is annotated with segmentation markers when polarity shifts. The system also outputs the counts of positive and negative sentiment words found in text and optionally annotates them with their valence.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124733675","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632049
Sonja Sredojev, R. Eaton
We present stability results for dissipative interconnected parameterized systems controlled by model predictive controller (MPC). According to the extensive literature, numerous results have been already developed to stabilize dissipative systems. However, they are still not explored enough in the context of MPC. Therefore, it naturally arises the need to investigate stability properties of dissipative dynamics for this particular class of controllers. In order to construct the efficient algorithm it is a fundamental requirement to get the full information about the plant dynamics. In general, this is very hard to obtain or, even not possible at all. Hence, we aim to stabilise the approximate dynamics containing a set of unknown parameters. Typically, for this type of problems the controller relies on a properly defined adaptation rule which forces the unknown parameter to converge inside a specified closed, convex set. Eventually, the controller drives the state solution to the optimal set-point. Asymptotic stability properties are analysed with respect to the specific quadratic supply rate and linear protocol. We assume that the output is available for a feedback all the time.
{"title":"Dissipativity-based model predictive controller for a family of parameterized systems","authors":"Sonja Sredojev, R. Eaton","doi":"10.1109/IcConSCS.2013.6632049","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632049","url":null,"abstract":"We present stability results for dissipative interconnected parameterized systems controlled by model predictive controller (MPC). According to the extensive literature, numerous results have been already developed to stabilize dissipative systems. However, they are still not explored enough in the context of MPC. Therefore, it naturally arises the need to investigate stability properties of dissipative dynamics for this particular class of controllers. In order to construct the efficient algorithm it is a fundamental requirement to get the full information about the plant dynamics. In general, this is very hard to obtain or, even not possible at all. Hence, we aim to stabilise the approximate dynamics containing a set of unknown parameters. Typically, for this type of problems the controller relies on a properly defined adaptation rule which forces the unknown parameter to converge inside a specified closed, convex set. Eventually, the controller drives the state solution to the optimal set-point. Asymptotic stability properties are analysed with respect to the specific quadratic supply rate and linear protocol. We assume that the output is available for a feedback all the time.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129984605","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632023
Silviu Medianu, L. Lefévre, D. Stefanoiu
The aim of this paper, is to study the identifiability property, of Port-Controlled Hamiltonian systems. A simple identifiability condition, is derived by transforming the port-Hamiltonian systems to the observable canonical form. Indeed, the observable canonical form, gives the possibility to represent the transfer function in a simplified form, similar to ARMAX models, used in identification. In order to test the identifiability of Port-Controlled Hamiltonian systems, a test was realized in the case of a LC circuit.
{"title":"Identifiability of linear lossless Port-controlled Hamiltonian systems","authors":"Silviu Medianu, L. Lefévre, D. Stefanoiu","doi":"10.1109/IcConSCS.2013.6632023","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632023","url":null,"abstract":"The aim of this paper, is to study the identifiability property, of Port-Controlled Hamiltonian systems. A simple identifiability condition, is derived by transforming the port-Hamiltonian systems to the observable canonical form. Indeed, the observable canonical form, gives the possibility to represent the transfer function in a simplified form, similar to ARMAX models, used in identification. In order to test the identifiability of Port-Controlled Hamiltonian systems, a test was realized in the case of a LC circuit.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126845443","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 : 2013-10-17DOI: 10.1109/IcConSCS.2013.6632026
Silviu Medianu, C. Lupu, D. Popescu, L. Lefévre
The aim of this paper, is to study the performances of closed-loop identification techniques, and choose an optimal closed-loop identification solution, for a flexible transmission system using two recursive closed-loop identification class of methods: the direct closed-loop identification class of methods, called CLOE (Closed Loop Output Error) and the indirect closed-loop identification class of methods called FOL (Filtered Open Loop). The flexible transmission system, for which an optimal closed-loop solution is proposed, is represented by a 4th order complex plant, with a 2nd order delay, identified in open-loop[1] for which also a pole-placement control strategy is proposed. The closed-loop identification tests, with the flexible transmission system, are realized in the case of a constant-trace adaptation gain, with a parametric initialization starting from the parameters identified in open-loop.
本文的目的，是研究闭环辨识技术的性能，并选择一个最优的闭环辨识解，针对柔性传动系统采用两种递归的闭环辨识类方法:直接闭环辨识类方法，称为CLOE (Closed Loop Output Error)和间接闭环辨识类方法，称为FOL (Filtered Open Loop)。柔性传动系统的最优闭环解是一个四阶复杂对象，具有二阶延迟，在开环中被识别[1]，并提出了一种极点放置控制策略。在恒迹自适应增益的情况下，实现了柔性传动系统的闭环辨识试验，并从开环辨识的参数开始进行参数初始化。
{"title":"Optimal closed-loop identification solution using direct and indirect methods for a flexible transmission system","authors":"Silviu Medianu, C. Lupu, D. Popescu, L. Lefévre","doi":"10.1109/IcConSCS.2013.6632026","DOIUrl":"https://doi.org/10.1109/IcConSCS.2013.6632026","url":null,"abstract":"The aim of this paper, is to study the performances of closed-loop identification techniques, and choose an optimal closed-loop identification solution, for a flexible transmission system using two recursive closed-loop identification class of methods: the direct closed-loop identification class of methods, called CLOE (Closed Loop Output Error) and the indirect closed-loop identification class of methods called FOL (Filtered Open Loop). The flexible transmission system, for which an optimal closed-loop solution is proposed, is represented by a 4th order complex plant, with a 2nd order delay, identified in open-loop[1] for which also a pole-placement control strategy is proposed. The closed-loop identification tests, with the flexible transmission system, are realized in the case of a constant-trace adaptation gain, with a parametric initialization starting from the parameters identified in open-loop.","PeriodicalId":265358,"journal":{"name":"2nd International Conference on Systems and Computer Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134251216","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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