Pub Date : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273040
Chaima. Rkiai, H. Chaouali, H. Othmani, A. Mami
This study presents an improvement of a classical IFOC speed control technique for a 3 phased asynchronous machine by implementing a Fuzzy Logic controller and an MRAS observer replacing speed sensor. Different simulations are made to investigate the robustness of speed estimation and control of rotor speed by imposing sudden variations in speed reference and load nature. The obtained results show the efficiency and the robustness of both developed MRAS speed observer and Fuzzy Logic controller against the introduced perturbations.
{"title":"Sensorless speed control of a 3 phased asynchronous machine based on MRAS observer and fuzzy logic control technique","authors":"Chaima. Rkiai, H. Chaouali, H. Othmani, A. Mami","doi":"10.1109/ICEMIS.2017.8273040","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273040","url":null,"abstract":"This study presents an improvement of a classical IFOC speed control technique for a 3 phased asynchronous machine by implementing a Fuzzy Logic controller and an MRAS observer replacing speed sensor. Different simulations are made to investigate the robustness of speed estimation and control of rotor speed by imposing sudden variations in speed reference and load nature. The obtained results show the efficiency and the robustness of both developed MRAS speed observer and Fuzzy Logic controller against the introduced perturbations.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738229","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8272997
Hajer Najjar, R. Bourguiba, Jaouhar Mouine
This paper presents an updated implementation of the Deriche edge detector in the era of programmable systems-on-chip, that will offer a new opportunity to integrate a whole segmentation chain in a single device. Based on existing optimizations of the filter we judiciously manage the area and the memory so as to leave enough space to insert the rest of the chain units.
{"title":"Real-time implementation of the Deriche edge detector on the Zybo board","authors":"Hajer Najjar, R. Bourguiba, Jaouhar Mouine","doi":"10.1109/ICEMIS.2017.8272997","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8272997","url":null,"abstract":"This paper presents an updated implementation of the Deriche edge detector in the era of programmable systems-on-chip, that will offer a new opportunity to integrate a whole segmentation chain in a single device. Based on existing optimizations of the filter we judiciously manage the area and the memory so as to leave enough space to insert the rest of the chain units.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134000093","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273090
R. Belghouthi, T. Selmi
We present in this paper a new model of a InGaN PV module made up of numerous cells interconnected in diverse potential configurations. The spontaneous and the piezoelectric polarizations effects have been included within the Matlab/Simulink model. Using our model, one can use it, and determine all the necessary parameters under any new conditions of irradiance and temperature and then, obtain the I(V) and P(V) characteristics. The model has shown promising and accurate results and would aid researchers in the field of power electronics to consider it as a truthful PV generator (PVG).
{"title":"Modeling of InGaN PV module using Matlab/Simulink","authors":"R. Belghouthi, T. Selmi","doi":"10.1109/ICEMIS.2017.8273090","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273090","url":null,"abstract":"We present in this paper a new model of a InGaN PV module made up of numerous cells interconnected in diverse potential configurations. The spontaneous and the piezoelectric polarizations effects have been included within the Matlab/Simulink model. Using our model, one can use it, and determine all the necessary parameters under any new conditions of irradiance and temperature and then, obtain the I(V) and P(V) characteristics. The model has shown promising and accurate results and would aid researchers in the field of power electronics to consider it as a truthful PV generator (PVG).","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133030561","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273015
Sonia Zouaoui, L. Boussaid, A. Mtibaa
In a multi-tasking system, numerous tasks require CPU time, and since there is only one CPU, some form of organization and coordination is needed so each task has the CPU time it needs. In practice, each task takes a very brief amount of time, so it seems as if all the tasks are executing in parallel and simultaneously. In the case of excessive complexity applications, which usually run in hard real time constraints, the use of a real time operating system (RTOS) is strongly required. In this paper, a tiny and reliable RTOS was implemented for PIC18F family of microcontroller. This operating system, which is called SmallRTOS, is based on Round-Robin scheduler. The used system tick is based on a variable time-sliced scheduling that has a direct effect on CPU load, context switching and process waiting time.
{"title":"SmallRTOS: Microcontroller-based embedded multitasking","authors":"Sonia Zouaoui, L. Boussaid, A. Mtibaa","doi":"10.1109/ICEMIS.2017.8273015","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273015","url":null,"abstract":"In a multi-tasking system, numerous tasks require CPU time, and since there is only one CPU, some form of organization and coordination is needed so each task has the CPU time it needs. In practice, each task takes a very brief amount of time, so it seems as if all the tasks are executing in parallel and simultaneously. In the case of excessive complexity applications, which usually run in hard real time constraints, the use of a real time operating system (RTOS) is strongly required. In this paper, a tiny and reliable RTOS was implemented for PIC18F family of microcontroller. This operating system, which is called SmallRTOS, is based on Round-Robin scheduler. The used system tick is based on a variable time-sliced scheduling that has a direct effect on CPU load, context switching and process waiting time.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133285420","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273107
S. Mehri, M. Hammami
Adipose tissue expresses all the renin-angiotensin system (RAS) components that play an important role in the adipogenesis, lipid and glucose metabolism regulation in an auto/paracrine manner. The classical RAS has been found to be over-activated during the adipose tissue enlargement, thus elevated Generation of Angiotensin II (Ang II) may contribute to the obesity pathogenesis. Obesity rates continue to increase worldwide. The question arises whether obesity is truly perceived as a risk factor and a disease. Then, the association between angiotensin converting enzyme (ACE) gene I/D polymorphism and the risk of overweight/obesity remains controversial. We investigated the possible relationship between ACE gene I/D polymorphism and obesity in Tunisian type 2 diabetes mellitus (T2DM) patients. In this study, obesity was defined as a body mass index (BMI) value ≥ 25 kg/m2 and subjects were classified into 4 groups (lean, normal, overweight, and obese). ACE genotyping was determined by PCR. Finding of 47.9% of hypertensives among the subjects having DD genotype and BMI ≥ 30 kg/m2 is consistent with an additive effect of DD genotype and obesity. In conclusion, the present study implies that genotyping of the ACE gene I/D polymorphism could in the future become an important part of the clinical process of risk identification for T2DM in Tunisian population.
{"title":"ACE gene I/D polymorphism and obesity in patients with type 2 diabetes mellitus","authors":"S. Mehri, M. Hammami","doi":"10.1109/ICEMIS.2017.8273107","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273107","url":null,"abstract":"Adipose tissue expresses all the renin-angiotensin system (RAS) components that play an important role in the adipogenesis, lipid and glucose metabolism regulation in an auto/paracrine manner. The classical RAS has been found to be over-activated during the adipose tissue enlargement, thus elevated Generation of Angiotensin II (Ang II) may contribute to the obesity pathogenesis. Obesity rates continue to increase worldwide. The question arises whether obesity is truly perceived as a risk factor and a disease. Then, the association between angiotensin converting enzyme (ACE) gene I/D polymorphism and the risk of overweight/obesity remains controversial. We investigated the possible relationship between ACE gene I/D polymorphism and obesity in Tunisian type 2 diabetes mellitus (T2DM) patients. In this study, obesity was defined as a body mass index (BMI) value ≥ 25 kg/m2 and subjects were classified into 4 groups (lean, normal, overweight, and obese). ACE genotyping was determined by PCR. Finding of 47.9% of hypertensives among the subjects having DD genotype and BMI ≥ 30 kg/m2 is consistent with an additive effect of DD genotype and obesity. In conclusion, the present study implies that genotyping of the ACE gene I/D polymorphism could in the future become an important part of the clinical process of risk identification for T2DM in Tunisian population.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133309476","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273051
H. Abdelali, R. Bedira, H. Trabelsi, A. Gharsallah
This paper presents an implementation of new compact substrate integrated waveguide (SIW) band pass filter (BPF) as a candidate for Wireless sensor network (WSN) applications. The proposed filter is working in UWB frequency and is constructed by three cavities. Two adjacent cavities connected with an iris located in the middle of the structure. While the third cavity is glued above as a superposed layer. In order to transfer the energy to the upper cavity, two symmetrical slots are etched in the top metal of the lower layer cavities. The simulation and performance evaluation have been performed by using the full-wave electromagnetic 3D simulator Ansys HFSS. In the same time, the proposed filter maintains low insertion loss approaching 0 dB as well as good matching since the return loss noted is under 15 dB over the pass band. Moreover, a generated transmission zero located under −15 dB close to the pass band with steep cut-off frequency response. Thus, to guarantee higher selectivity. Furthermore, the compact size of this filter make it suitable for easy integration in systems on chip for microwave circuits.
{"title":"Bandwidth enhancement of substrate integrated waveguide band pass filter for wireless sensor network applications","authors":"H. Abdelali, R. Bedira, H. Trabelsi, A. Gharsallah","doi":"10.1109/ICEMIS.2017.8273051","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273051","url":null,"abstract":"This paper presents an implementation of new compact substrate integrated waveguide (SIW) band pass filter (BPF) as a candidate for Wireless sensor network (WSN) applications. The proposed filter is working in UWB frequency and is constructed by three cavities. Two adjacent cavities connected with an iris located in the middle of the structure. While the third cavity is glued above as a superposed layer. In order to transfer the energy to the upper cavity, two symmetrical slots are etched in the top metal of the lower layer cavities. The simulation and performance evaluation have been performed by using the full-wave electromagnetic 3D simulator Ansys HFSS. In the same time, the proposed filter maintains low insertion loss approaching 0 dB as well as good matching since the return loss noted is under 15 dB over the pass band. Moreover, a generated transmission zero located under −15 dB close to the pass band with steep cut-off frequency response. Thus, to guarantee higher selectivity. Furthermore, the compact size of this filter make it suitable for easy integration in systems on chip for microwave circuits.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125109501","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273104
Najim Aldin Mohsun
The detection and classification of faults for induction motors (I. M) are significant important for researchers. Early detection of the faults prevents the stopping for industrial systems and reduces the cost of maintenance. In this article, broken bars fault classification in 3 φ induction motor are presented and successfully evaluated. The proposed scheme is used the Support Vector Machine (SVM) technique. The envelope of stator current has been estimated in order to extract five features. Principal Component Analysis are presented in order to fed the classifier with suitable classes. The experimental results showed the success of the proposed method for the diagnosis of broken rotor bar for induction motor.
{"title":"Broken rotor bar fault classification for induction motor based on support vector machine-SVM","authors":"Najim Aldin Mohsun","doi":"10.1109/ICEMIS.2017.8273104","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273104","url":null,"abstract":"The detection and classification of faults for induction motors (I. M) are significant important for researchers. Early detection of the faults prevents the stopping for industrial systems and reduces the cost of maintenance. In this article, broken bars fault classification in 3 φ induction motor are presented and successfully evaluated. The proposed scheme is used the Support Vector Machine (SVM) technique. The envelope of stator current has been estimated in order to extract five features. Principal Component Analysis are presented in order to fed the classifier with suitable classes. The experimental results showed the success of the proposed method for the diagnosis of broken rotor bar for induction motor.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114923503","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8272993
Ali Lahouar, Amal Mejri, J. Slama
Load forecast is one of the most important tasks in modern and smart grids. With the integration of renewable intermittent sources and the adoption of demand response strategies, an accurate short-term prediction becomes mandatory. Modern forecast approaches do not merely estimate future values, but provide also confidence intervals with different widths and probabilities. Therefore, this paper proposes a probabilistic day-ahead load forecast approach based on quantile regression forests. Quantile regression forests are extensions to random forests that provide confidence intervals instead of single points. The forecaster inputs are chosen according to measures of correlation and importance, profile analysis and wavelet decomposition of load curves. Several tests are performed using real data sets from the Ontario market. The results reflect the accuracy and the effectiveness of the proposed model under different circumstances.
{"title":"Probabilistic day-ahead load forecast using quantile regression forests","authors":"Ali Lahouar, Amal Mejri, J. Slama","doi":"10.1109/ICEMIS.2017.8272993","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8272993","url":null,"abstract":"Load forecast is one of the most important tasks in modern and smart grids. With the integration of renewable intermittent sources and the adoption of demand response strategies, an accurate short-term prediction becomes mandatory. Modern forecast approaches do not merely estimate future values, but provide also confidence intervals with different widths and probabilities. Therefore, this paper proposes a probabilistic day-ahead load forecast approach based on quantile regression forests. Quantile regression forests are extensions to random forests that provide confidence intervals instead of single points. The forecaster inputs are chosen according to measures of correlation and importance, profile analysis and wavelet decomposition of load curves. Several tests are performed using real data sets from the Ontario market. The results reflect the accuracy and the effectiveness of the proposed model under different circumstances.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123896272","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8272983
Rasha Ismail, F. Safieddine, Atik Kulakli
The failure of the UK government in setting up the first e-university in the early 2000 is attributed to several reasons including poor business models, branding, disruptive technologies, lack of organizational structure that accommodates such challenges, and failure to integrate a blended approach. Key to this failure is the lecture/lesson delivery model whereby e-university lesson models did not adapt much of the original classroom model of teaching with that of the virtual environment. A key obstacle is believed to be the lack of technologies of the time to support such processes. The conditions have since changed and are set to continue to change. This paper looks at academic research, technological innovations, employs process analysis, and reflective analysis to provide a lecture/lesson delivery model for the next generations of e-universities. The aim is to find to what extend current online lecture/lesson deliveries have evolved. In this process, the team reviews the case study of a UK e-university using Adobe Connect learning model that mirrors much of the physical processes of lecture/lesson delivery. Using Riva model, the paper compares the physical with the virtual model of lesson/lecture delivery processes. The paper concludes that this key process has shown promising results but there remain some challenges for e-university processes to overcome.
{"title":"E-university lecture delivery model: From classroom to virtual","authors":"Rasha Ismail, F. Safieddine, Atik Kulakli","doi":"10.1109/ICEMIS.2017.8272983","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8272983","url":null,"abstract":"The failure of the UK government in setting up the first e-university in the early 2000 is attributed to several reasons including poor business models, branding, disruptive technologies, lack of organizational structure that accommodates such challenges, and failure to integrate a blended approach. Key to this failure is the lecture/lesson delivery model whereby e-university lesson models did not adapt much of the original classroom model of teaching with that of the virtual environment. A key obstacle is believed to be the lack of technologies of the time to support such processes. The conditions have since changed and are set to continue to change. This paper looks at academic research, technological innovations, employs process analysis, and reflective analysis to provide a lecture/lesson delivery model for the next generations of e-universities. The aim is to find to what extend current online lecture/lesson deliveries have evolved. In this process, the team reviews the case study of a UK e-university using Adobe Connect learning model that mirrors much of the physical processes of lecture/lesson delivery. Using Riva model, the paper compares the physical with the virtual model of lesson/lecture delivery processes. The paper concludes that this key process has shown promising results but there remain some challenges for e-university processes to overcome.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124053517","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 : 2017-05-01DOI: 10.1109/ICEMIS.2017.8273061
Ahmed Haddad, Labo Riadi
The objective is to conceive and carry out an automatic verification system of the handwritten signatures while being based on the tools of recognitions of the manuscript writing based on the generic silhouettes, this system must allow a fast, systematic and effective checking of the signatures and would reduce the risks of counterfeit significantly. This system enters within the framework of software tools for the automatic treatment of the natural language. This modelling procedure will be based on a soft representation of words called “descriptor”. We use the Arabic morpho-syntactic module of the linguistic platform NooJ for the automatic analysis of all the recognized forms.
{"title":"Online automatic Arabic handwritten signature and manuscript recognition","authors":"Ahmed Haddad, Labo Riadi","doi":"10.1109/ICEMIS.2017.8273061","DOIUrl":"https://doi.org/10.1109/ICEMIS.2017.8273061","url":null,"abstract":"The objective is to conceive and carry out an automatic verification system of the handwritten signatures while being based on the tools of recognitions of the manuscript writing based on the generic silhouettes, this system must allow a fast, systematic and effective checking of the signatures and would reduce the risks of counterfeit significantly. This system enters within the framework of software tools for the automatic treatment of the natural language. This modelling procedure will be based on a soft representation of words called “descriptor”. We use the Arabic morpho-syntactic module of the linguistic platform NooJ for the automatic analysis of all the recognized forms.","PeriodicalId":117908,"journal":{"name":"2017 International Conference on Engineering & MIS (ICEMIS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114899749","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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