The purpose of this paper is to identify the elements that influence in solid waste management in the center of “Centro Histórico de Quito”. The proposed methodology includes making a simulation with georeferenced multi-agents that improve the handling of the waste. By using the GAMA platform, a simulation model was established with three types of agents: collectors, people and waste containers within an environment modeled with Geographic Information Systems (GIS) layers where the simulation takes place. Each agent is defined by limits and attributes to do actions close to reality within the simulation environment in such a way that people throw waste to the waste container which in turn are emptied by the collectors. A schedule and initial parameters are defined which are modified during the simulation to optimize the routers or the number of collectors. As results, it was observed that with the growth of population in that area, the handling of waste gets more complex. It is not enough to modify the routers, making it necessary to increase the number of collectors.
{"title":"Solid Waste Management using Georeferenced Multi-agent Systems*","authors":"Zoila Ruiz-Chavez, Jaime Salvador-Meneses, Soledad Diaz-Quilachamin, Cristina Mejía-Astudillo","doi":"10.1109/LA-CCI.2018.8625216","DOIUrl":"https://doi.org/10.1109/LA-CCI.2018.8625216","url":null,"abstract":"The purpose of this paper is to identify the elements that influence in solid waste management in the center of “Centro Histórico de Quito”. The proposed methodology includes making a simulation with georeferenced multi-agents that improve the handling of the waste. By using the GAMA platform, a simulation model was established with three types of agents: collectors, people and waste containers within an environment modeled with Geographic Information Systems (GIS) layers where the simulation takes place. Each agent is defined by limits and attributes to do actions close to reality within the simulation environment in such a way that people throw waste to the waste container which in turn are emptied by the collectors. A schedule and initial parameters are defined which are modified during the simulation to optimize the routers or the number of collectors. As results, it was observed that with the growth of population in that area, the handling of waste gets more complex. It is not enough to modify the routers, making it necessary to increase the number of collectors.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121483272","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580309
Carlos A. Loza, J. Príncipe
We propose a novel framework for robust estimation of recurring patterns in time series. Particularly, we utilize correntropy and a shift–invariant adaptation of sparse modeling techniques as the underpinnings of a data–driven scheme where potential outliers, such as spikes, dropouts, high–amplitude impulsive noise, gaps, and overlaps are managed in a principled manner. The Maximum Correntropy Criterion (MCC) is applied to the estimation paradigms and solved via the Half–Quadratic (HQ) technique, which allows a fast and efficient computation of the optimal projection vectors without adding extra free parameters. We also posit a heuristic regarding the initial set of functions to be estimated; specifically, we restrict the search space to patterns with modulatory activity only. We then implement a robust clustering routine to provide a principled initial seed for the greedy algorithms. This heuristic is proved to alleviate the computational burden that shift–invariant unsupervised learning usually entails. The framework is tested on synthetic time series built from weighted Discrete Cosine Transform (DCT) atoms under four different variants of outliers. In addition, we present preliminary results on winding data that illustrate the clear advantages of the methods.
{"title":"Robust Estimation of Shift–Invariant Patterns Exploiting Correntropy","authors":"Carlos A. Loza, J. Príncipe","doi":"10.1109/ETCM.2018.8580309","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580309","url":null,"abstract":"We propose a novel framework for robust estimation of recurring patterns in time series. Particularly, we utilize correntropy and a shift–invariant adaptation of sparse modeling techniques as the underpinnings of a data–driven scheme where potential outliers, such as spikes, dropouts, high–amplitude impulsive noise, gaps, and overlaps are managed in a principled manner. The Maximum Correntropy Criterion (MCC) is applied to the estimation paradigms and solved via the Half–Quadratic (HQ) technique, which allows a fast and efficient computation of the optimal projection vectors without adding extra free parameters. We also posit a heuristic regarding the initial set of functions to be estimated; specifically, we restrict the search space to patterns with modulatory activity only. We then implement a robust clustering routine to provide a principled initial seed for the greedy algorithms. This heuristic is proved to alleviate the computational burden that shift–invariant unsupervised learning usually entails. The framework is tested on synthetic time series built from weighted Discrete Cosine Transform (DCT) atoms under four different variants of outliers. In addition, we present preliminary results on winding data that illustrate the clear advantages of the methods.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"186 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120970064","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580306
Jose Restrepo, Xavier Domínguez, Jhonny Barzola, Isabel Quinde
The increase in solar power penetration during the last years has prompted development of control techniques to inject power into grids with wide and sometimes varying characteristics. Among them, microgrids represent small versatile networks with different load types. Some microgrids require power injection at the three phase level, with stringent tolerance levels, as dictated by IEEE Standard 1547. This work presents the results of using two type of strategies, the first using direct power control DPC, and the second using d/q control. The connection to the power grid uses an L-filter with (DPC) and an LCL-filter with a PI controller in d/q coordinates. Simulations show that the DPC controller behaves well under wide varying conditions, but requires large filter inductance, while the d/q controller with LCL-filter needs special compensation to reduced inherent oscillations due to the LCL-filter.
{"title":"Inverter Control for Power Injection from PV Sources in Microgrids Under Unbalanced Power Grid and Load Conditions","authors":"Jose Restrepo, Xavier Domínguez, Jhonny Barzola, Isabel Quinde","doi":"10.1109/ETCM.2018.8580306","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580306","url":null,"abstract":"The increase in solar power penetration during the last years has prompted development of control techniques to inject power into grids with wide and sometimes varying characteristics. Among them, microgrids represent small versatile networks with different load types. Some microgrids require power injection at the three phase level, with stringent tolerance levels, as dictated by IEEE Standard 1547. This work presents the results of using two type of strategies, the first using direct power control DPC, and the second using d/q control. The connection to the power grid uses an L-filter with (DPC) and an LCL-filter with a PI controller in d/q coordinates. Simulations show that the DPC controller behaves well under wide varying conditions, but requires large filter inductance, while the d/q controller with LCL-filter needs special compensation to reduced inherent oscillations due to the LCL-filter.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124762842","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580278
Fernando Becerra, David Mejia, Ivan Bernal
Network functions virtualization (NFV) offers an alternative way to design, deploy, and manage networking services. This paper presents the implementation and deployment of a virtualized network function to solve MP-TCP’ shared bottlenecks problem. MP-TCP (MultiPath-TCP) is a protocol that allows hosts that have several interfaces to send data through multiple paths in the network. An MP-TCP connection is divided into several TCP connections called subflows that may follow different paths, in this way effective connection rates and resilience can be increased. However, in a scenario where MP-TCP is used with hosts having a single network interface, created subflows follow the same path even if several are available; this generates the problem known as a shared bottleneck. A solution to this problem is implemented as a SDN (Software Defined Networking) module that is integrated into OpenDayLight’s framework which is used as the SDN controller. This solution is then deployed as a NFV over a cloud infrastructure implemented with OpenStack over a high-end physical server. The deployment of the NFV is automated to a certain degree using Ansible, a DevOps tool. Finally, results of the tests of the SDN solution to MP-TCP’s shared bottlenecks and its operation as a NFV using a completely virtualized network are reported.
{"title":"Virtualizing and Deploying a Solution to MP-TCP’s Shared Bottlenecks as a Network Function","authors":"Fernando Becerra, David Mejia, Ivan Bernal","doi":"10.1109/ETCM.2018.8580278","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580278","url":null,"abstract":"Network functions virtualization (NFV) offers an alternative way to design, deploy, and manage networking services. This paper presents the implementation and deployment of a virtualized network function to solve MP-TCP’ shared bottlenecks problem. MP-TCP (MultiPath-TCP) is a protocol that allows hosts that have several interfaces to send data through multiple paths in the network. An MP-TCP connection is divided into several TCP connections called subflows that may follow different paths, in this way effective connection rates and resilience can be increased. However, in a scenario where MP-TCP is used with hosts having a single network interface, created subflows follow the same path even if several are available; this generates the problem known as a shared bottleneck. A solution to this problem is implemented as a SDN (Software Defined Networking) module that is integrated into OpenDayLight’s framework which is used as the SDN controller. This solution is then deployed as a NFV over a cloud infrastructure implemented with OpenStack over a high-end physical server. The deployment of the NFV is automated to a certain degree using Ansible, a DevOps tool. Finally, results of the tests of the SDN solution to MP-TCP’s shared bottlenecks and its operation as a NFV using a completely virtualized network are reported.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115217687","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580261
Bryan Gordillo, Francisco Sandoval, Patricia Ludeña-González, Katty Rohoden
Orthogonal frequency division multiplexing (OFDM) is a modulation and multiplexing technique widely used in communication systems since it guarantees reliable communications on noisy wireless channels. However, OFDM implementation is a very challenging task due to the high peak-to-average power ratio (PAPR) value. In this work, a PAPR reduction technique is applied, namely clipping technique. This technique is evaluated in a real OFDM system, which is implemented in software defined radio (SDR). We present and demonstrate that is possible to increase the range and coverage through the efficient use of the transmission power when the PAPR reduction technique is applied in the SDR technology. The results show that when a clipping technique with a threshold of 60% is used, the power required is reduced in 33.75%. Additionally, the reduction percentage could be transformed into 9.58% of increase in range and 63.07% in coverage.
{"title":"Increase the Range and Coverage on OFDM System using PAPR reduction by Clipping on SDR","authors":"Bryan Gordillo, Francisco Sandoval, Patricia Ludeña-González, Katty Rohoden","doi":"10.1109/ETCM.2018.8580261","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580261","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is a modulation and multiplexing technique widely used in communication systems since it guarantees reliable communications on noisy wireless channels. However, OFDM implementation is a very challenging task due to the high peak-to-average power ratio (PAPR) value. In this work, a PAPR reduction technique is applied, namely clipping technique. This technique is evaluated in a real OFDM system, which is implemented in software defined radio (SDR). We present and demonstrate that is possible to increase the range and coverage through the efficient use of the transmission power when the PAPR reduction technique is applied in the SDR technology. The results show that when a clipping technique with a threshold of 60% is used, the power required is reduced in 33.75%. Additionally, the reduction percentage could be transformed into 9.58% of increase in range and 63.07% in coverage.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126659875","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580308
Adrián Criollo Rios, Diego Xavier Morales Jadan, Freddy Narvaez Buestan
This research and development project presents the optimization of BESS energy storage systems (Battery Energy Storage System) in photovoltaic systems connected to the electricity grid, using mixed integer linear programming algorithms. In the development of this work, the creation of a database of both load and generation profiles was first performed, the data obtained served to propose the mathematical optimization model together with their respective restrictions. The optimization model was solved through mixed linear programming algorithms and finally the optimization algorithm developed was tested for the electrical system of Santa Cruz Island, Galápagos province, where the integration of the electric grid with renewable energies is carried out as the PV generation.
本研发项目采用混合整数线性规划算法，对并网光伏系统中的BESS储能系统(Battery energy storage System)进行优化。在本工作的开发过程中，首先建立了负荷和发电概况的数据库，所获得的数据用于提出数学优化模型及其各自的限制条件。通过混合线性规划算法求解优化模型，最后将所开发的优化算法应用于Galápagos省圣克鲁斯岛电力系统进行测试，该电力系统采用可再生能源作为光伏发电进行并网。
{"title":"Determination of the optimal size of the Energy Storage Systems in photovoltaic systems connected to the electricity network, through Mixed-Integer Linear Programming","authors":"Adrián Criollo Rios, Diego Xavier Morales Jadan, Freddy Narvaez Buestan","doi":"10.1109/ETCM.2018.8580308","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580308","url":null,"abstract":"This research and development project presents the optimization of BESS energy storage systems (Battery Energy Storage System) in photovoltaic systems connected to the electricity grid, using mixed integer linear programming algorithms. In the development of this work, the creation of a database of both load and generation profiles was first performed, the data obtained served to propose the mathematical optimization model together with their respective restrictions. The optimization model was solved through mixed linear programming algorithms and finally the optimization algorithm developed was tested for the electrical system of Santa Cruz Island, Galápagos province, where the integration of the electric grid with renewable energies is carried out as the PV generation.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121291765","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580321
González Bonifaz David Efraín, Verdugo Cabrera Alexanra del Carmen, Escobar Carvajal Luis Fernando, Lozano César
Multi-Robot systems pose a great area of interest, in order to get benefits from this kind of systems communication and scalability are challenges that have to be surpassed. On the other hand, IoT architectures had shown promise in the connectivity between multiple devices. The present work shows the implementation of an IoT architecture based on MQTT in a Multi-Robot system. Characteristics, navigation and complementary functions of the Multi-Robot system are exposed. Additionally, the IoT architecture elements and functions are described. The test section has focused on evaluating IoT criterions: response time, computational cost, architecture functionality and Multi-Robot capabilities. The results had been satisfactory and shown opportunities in the area of communication and scalability for Multi-Robot systems.
{"title":"Implementation of an IoT Architecture based on MQTT for a Multi-Robot System","authors":"González Bonifaz David Efraín, Verdugo Cabrera Alexanra del Carmen, Escobar Carvajal Luis Fernando, Lozano César","doi":"10.1109/ETCM.2018.8580321","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580321","url":null,"abstract":"Multi-Robot systems pose a great area of interest, in order to get benefits from this kind of systems communication and scalability are challenges that have to be surpassed. On the other hand, IoT architectures had shown promise in the connectivity between multiple devices. The present work shows the implementation of an IoT architecture based on MQTT in a Multi-Robot system. Characteristics, navigation and complementary functions of the Multi-Robot system are exposed. Additionally, the IoT architecture elements and functions are described. The test section has focused on evaluating IoT criterions: response time, computational cost, architecture functionality and Multi-Robot capabilities. The results had been satisfactory and shown opportunities in the area of communication and scalability for Multi-Robot systems.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116325324","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580301
Kevin Eduardo Lucas Marcillo, D. P. Guingla, E. M. Rocha, W. Barra, David Alejandro Vaca Benavides, R. L. P. de Medeiros
This paper presents the design and evaluation of an optimized interval controller of a buck converter. Uncertainties represent changes in the operating conditions of the system, resulting in degradation of performance of a conventional controller. To address this problem, an optimal robust controller is investigated, aiming to maintain acceptable dynamic performance throughout the range of permissible operating points. In order to maintain efficiency of control process at high level, the controller parameters are optimized by using the Chebyshev’s theorem as robust control technique that guarantees the minimization of the total deviation from the desired performance in a closed-loop system, specified by a family of characteristic polynomials. Simulation has been carried out using Matlab/Simulink. The results show that the optimized interval robust controller is able to maintain acceptable performance across the operating range, with a minor performance degradation compared to an interval robust controller and a conventional controller.
{"title":"Parameter Optimization of an Interval Robust Controller of a Buck Converter Subject to Parametric Uncertainties","authors":"Kevin Eduardo Lucas Marcillo, D. P. Guingla, E. M. Rocha, W. Barra, David Alejandro Vaca Benavides, R. L. P. de Medeiros","doi":"10.1109/ETCM.2018.8580301","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580301","url":null,"abstract":"This paper presents the design and evaluation of an optimized interval controller of a buck converter. Uncertainties represent changes in the operating conditions of the system, resulting in degradation of performance of a conventional controller. To address this problem, an optimal robust controller is investigated, aiming to maintain acceptable dynamic performance throughout the range of permissible operating points. In order to maintain efficiency of control process at high level, the controller parameters are optimized by using the Chebyshev’s theorem as robust control technique that guarantees the minimization of the total deviation from the desired performance in a closed-loop system, specified by a family of characteristic polynomials. Simulation has been carried out using Matlab/Simulink. The results show that the optimized interval robust controller is able to maintain acceptable performance across the operating range, with a minor performance degradation compared to an interval robust controller and a conventional controller.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127702004","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580317
Verônica Soria, G. Arévalo, Patricio Ávila, Francisco Tello, Cristina Gómez Santamaría
In this paper we describe the deployment of a 2×2 and a 4×4 MIMO system using a set of up to eight universal software-defined radio peripherals (USRP) in order to compare the performance of the Alamouti and V-VLAST coding techniques employed for improving the rate and reliability of the data transmission. V-BLAST is based on spatial multiplexing whilst Alamouti employs diversity gain. Results show that, when transmitting M-QAM modulated data, Alamouti achieves a better BER than V-BLAST for the 2×2 as well as for the 4×4 MIMO system.
{"title":"Performance comparison of 2×2 and 4×4 V-BLAST and Alamouti MIMO systems","authors":"Verônica Soria, G. Arévalo, Patricio Ávila, Francisco Tello, Cristina Gómez Santamaría","doi":"10.1109/ETCM.2018.8580317","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580317","url":null,"abstract":"In this paper we describe the deployment of a 2×2 and a 4×4 MIMO system using a set of up to eight universal software-defined radio peripherals (USRP) in order to compare the performance of the Alamouti and V-VLAST coding techniques employed for improving the rate and reliability of the data transmission. V-BLAST is based on spatial multiplexing whilst Alamouti employs diversity gain. Results show that, when transmitting M-QAM modulated data, Alamouti achieves a better BER than V-BLAST for the 2×2 as well as for the 4×4 MIMO system.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126237958","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 : 2018-10-01DOI: 10.1109/ETCM.2018.8580313
J. Velásquez, E. Severeyn, H. Herrera, Néstor Utrera, L. Encalada, Sara Wong
Diabetes mellitus and cardiovascular diseases are ailments related to insulin resistance (IR) and obesity. The existing methods for IR and obesity diagnosis are the HOMA-IR and body mass index (BMI), respectively. Those methods have limitations in the diagnosis. The aim of this research is to propose dimensionless indexes that can diagnose subjects with IR and obesity using anthropometrics and biochemical variables (waist circumference, height, weight, systolic blood pressure, diastolic blood pressure and triglycerides). Three dimensionless indexes, designed from the π Vaschy-Buckingham theorem, were assessed using receiver operating characteristic (ROC) curves and a database of 829 subjects. The index π1, constructed with the variables: waist circumference, triglycerides height and weight; obtained a better performance as classifier of IR and obesity, presenting an area under the ROC curve of 0.78, sensitivity of 0.82 and specificity of 0.68 for IR diagnosis, and an area under the ROC curve of 0.68, sensitivity of 0.66 and specificity of 0.65 for obesity diagnosis. The π1 dimensionless index designed in this study is a simple method that allows diagnosing two pathologies from variables that can be collected in a routine medical examination.
{"title":"Towards the insulin resistance and obesity diagnosis: A dimensional analysis approach","authors":"J. Velásquez, E. Severeyn, H. Herrera, Néstor Utrera, L. Encalada, Sara Wong","doi":"10.1109/ETCM.2018.8580313","DOIUrl":"https://doi.org/10.1109/ETCM.2018.8580313","url":null,"abstract":"Diabetes mellitus and cardiovascular diseases are ailments related to insulin resistance (IR) and obesity. The existing methods for IR and obesity diagnosis are the HOMA-IR and body mass index (BMI), respectively. Those methods have limitations in the diagnosis. The aim of this research is to propose dimensionless indexes that can diagnose subjects with IR and obesity using anthropometrics and biochemical variables (waist circumference, height, weight, systolic blood pressure, diastolic blood pressure and triglycerides). Three dimensionless indexes, designed from the π Vaschy-Buckingham theorem, were assessed using receiver operating characteristic (ROC) curves and a database of 829 subjects. The index π1, constructed with the variables: waist circumference, triglycerides height and weight; obtained a better performance as classifier of IR and obesity, presenting an area under the ROC curve of 0.78, sensitivity of 0.82 and specificity of 0.68 for IR diagnosis, and an area under the ROC curve of 0.68, sensitivity of 0.66 and specificity of 0.65 for obesity diagnosis. The π1 dimensionless index designed in this study is a simple method that allows diagnosing two pathologies from variables that can be collected in a routine medical examination.","PeriodicalId":334574,"journal":{"name":"2018 IEEE Third Ecuador Technical Chapters Meeting (ETCM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134107231","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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