Se propone una metodologia para la evaluacion de la condicion de corrientes urbanas que integra d... more Se propone una metodologia para la evaluacion de la condicion de corrientes urbanas que integra datos de campo, informacion historica y analisis tecnico. La metodologia podria aplicarse en el componente hidraulico del subsistema fisico para el cumplimiento de los planes de ordenamiento de las microcuencas. Se definen indicadores para medir la situacion de las corrientes por tramos y en toda la microcuenca, se analiza la conectividad entre tramos de la corriente de distintas condiciones de capacidad hidraulica y se desarrolla un analisis multicriterio en el cual se reune toda la informacion recopilada y se identifican los puntos de situacion mas critica en la red hidrica segun tres criterios basicos: evaluacion de campo, registros de inundacion y capacidad hidraulica. Abstract: A methodology for the evaluation of the condition of urban streams is proposed. The methodology integrates field data, historical information and technical analysis; it could be applied to the hydraulic compon...
In the context of vehicular networks a map updating application was analyzed, which enables vehic... more In the context of vehicular networks a map updating application was analyzed, which enables vehicles to download relevant geographic data related to their position. Possible strategies for data sharing are the networks from infrastructure to a vehicle (I2V) and from vehicle to vehicle (V2V). In this study two chunking techniques, the Random Sort Strategy (RSS) and the Network Coding (NC), for the I2V network segment were compared. The study revealed that the distribution of different received chunks is independent of the file size when NC is used; when RSS is used the mean and standard deviation depend on the file size. The authors intend to integrate in a next step these results in the analysis of the V2V network segment. Keywords: V2V, VANet, map update, network coding, random sort strategy. RESUMEN En el contexto de las redes vehiculares, analizamos una aplicacion de descarga de mapas, donde cada vehiculo descarga datos de mapas relevantes segun su posicion. Entre las estrategias...
The blue-billed curassow, Crax alberti, is a critically endangered endemic bird from the northern... more The blue-billed curassow, Crax alberti, is a critically endangered endemic bird from the northern part of Colombia, mainly subjected to habitat loss and subsistence hunting. Geographic Information Systems (GIS) were used to compare the conservation status of forested areas, habitat of the blue-billed curassow, in 15 municipalities of the northeastern region of Antioquia for two different time periods (1986 and 2002). The developed application using digital cartography, allowed the classification of eight zones defined for the study area in order to analyze conservation priorities. Recommendations are made as well for future applications of GIS as a management tool for threatened species in Colombia.
Spectrochimica Acta Part B: Atomic Spectroscopy, 2020
Abstract The use of tetrafluoroboric acid and sodium hydroxide were investigated for the total de... more Abstract The use of tetrafluoroboric acid and sodium hydroxide were investigated for the total decomposition of plant tissues and fertilizers for Si determination by microwave-induced plasma optical emission spectrometry (MIP OES). The accuracy was estimated by comparing the results of the proposed method with those of energy dispersive X-ray fluorescence (ED-XRF). The optimized HBF4 volume required to decompose 100 mg of sample was estimated to be 0.2 mL (48% w v−1). The Si recovery obtained was 99%, and the limit of detection was 0.03 g kg−1. Concerning the reactions and the possible products formed, after digestion 70% of the Si was found as fluorosilicic acid. Besides this, hydrofluoric acid was formed. High dilution factors, the addition of excess boric acid, or the use of a sample introduction system manufactured from inert components can be adopted to avoid damage to the MIP OES components and contamination of the analytical blank. The introduction of air in the N2 plasma was assessed to reduce the matrix effect noted due to high sodium concentration in the alkaline digestion, and improved accuracy was achieved. The Si recoveries obtained by applying this method varied from 100 to 102%, and the limit of detection was 0.4 g kg−1.
Anais do Encontro Nacional de Computação dos Institutos Federais (ENCompIF), 2020
Este trabalho apresenta o desenvolvimento de uma ferramenta de software denominada SIMUNOS, cujo ... more Este trabalho apresenta o desenvolvimento de uma ferramenta de software denominada SIMUNOS, cujo objetivo é simular o comportamento do sistema imunológico humano utilizando agentes inteligentes. A fim de avaliar nossa proposta foram feitos experimentos usando como métricas a variação na população de antígenos e neutrófilos. Os resultados demonstram a viabilidade do uso de Modelagem e Simulação Baseada em Agentes para estudar sistemas complexos.
O artigo vincula-se a ao suposto de que a localização das atividades econômicas não pode ser expl... more O artigo vincula-se a ao suposto de que a localização das atividades econômicas não pode ser explicada apenas por pressupostos da lógica formal, baseados na escolha racional, recorrendo ao escopo teórico da lógica histórica e dialética para compreender o próprio espaço e sua relação com a dinâmica econômica e social de acumulação do capital, tendo como objeto de análise empírica a produção siderúrgica no Brasil. Para aproximar a manifestação do fenômeno e visualizar sua distribuição no espaço, recorreu-se a produção do Índice de Concentração Normalizado (ICn) para todos os municípios brasileiros no ano de 2010, utilizando dados sobre o número de trabalhadores empregados nas 13 classes de atividades econômicas que compõe a cadeia produtiva de valorização do aço. Os resultados nos permitiram identificar as estruturas espaciais que são fundamentais para os processos de criação e circulação do valor, inseridos no processo de acumulação do capital. No entanto, além dos determinantes raci...
Se propone una metodologia para la evaluacion de la condicion de corrientes urbanas que integra d... more Se propone una metodologia para la evaluacion de la condicion de corrientes urbanas que integra datos de campo, informacion historica y analisis tecnico. La metodologia podria aplicarse en el componente hidraulico del subsistema fisico para el cumplimiento de los planes de ordenamiento de las microcuencas. Se definen indicadores para medir la situacion de las corrientes por tramos y en toda la microcuenca, se analiza la conectividad entre tramos de la corriente de distintas condiciones de capacidad hidraulica y se desarrolla un analisis multicriterio en el cual se reune toda la informacion recopilada y se identifican los puntos de situacion mas critica en la red hidrica segun tres criterios basicos: evaluacion de campo, registros de inundacion y capacidad hidraulica. Abstract: A methodology for the evaluation of the condition of urban streams is proposed. The methodology integrates field data, historical information and technical analysis; it could be applied to the hydraulic compon...
In the context of vehicular networks a map updating application was analyzed, which enables vehic... more In the context of vehicular networks a map updating application was analyzed, which enables vehicles to download relevant geographic data related to their position. Possible strategies for data sharing are the networks from infrastructure to a vehicle (I2V) and from vehicle to vehicle (V2V). In this study two chunking techniques, the Random Sort Strategy (RSS) and the Network Coding (NC), for the I2V network segment were compared. The study revealed that the distribution of different received chunks is independent of the file size when NC is used; when RSS is used the mean and standard deviation depend on the file size. The authors intend to integrate in a next step these results in the analysis of the V2V network segment. Keywords: V2V, VANet, map update, network coding, random sort strategy. RESUMEN En el contexto de las redes vehiculares, analizamos una aplicacion de descarga de mapas, donde cada vehiculo descarga datos de mapas relevantes segun su posicion. Entre las estrategias...
The blue-billed curassow, Crax alberti, is a critically endangered endemic bird from the northern... more The blue-billed curassow, Crax alberti, is a critically endangered endemic bird from the northern part of Colombia, mainly subjected to habitat loss and subsistence hunting. Geographic Information Systems (GIS) were used to compare the conservation status of forested areas, habitat of the blue-billed curassow, in 15 municipalities of the northeastern region of Antioquia for two different time periods (1986 and 2002). The developed application using digital cartography, allowed the classification of eight zones defined for the study area in order to analyze conservation priorities. Recommendations are made as well for future applications of GIS as a management tool for threatened species in Colombia.
Spectrochimica Acta Part B: Atomic Spectroscopy, 2020
Abstract The use of tetrafluoroboric acid and sodium hydroxide were investigated for the total de... more Abstract The use of tetrafluoroboric acid and sodium hydroxide were investigated for the total decomposition of plant tissues and fertilizers for Si determination by microwave-induced plasma optical emission spectrometry (MIP OES). The accuracy was estimated by comparing the results of the proposed method with those of energy dispersive X-ray fluorescence (ED-XRF). The optimized HBF4 volume required to decompose 100 mg of sample was estimated to be 0.2 mL (48% w v−1). The Si recovery obtained was 99%, and the limit of detection was 0.03 g kg−1. Concerning the reactions and the possible products formed, after digestion 70% of the Si was found as fluorosilicic acid. Besides this, hydrofluoric acid was formed. High dilution factors, the addition of excess boric acid, or the use of a sample introduction system manufactured from inert components can be adopted to avoid damage to the MIP OES components and contamination of the analytical blank. The introduction of air in the N2 plasma was assessed to reduce the matrix effect noted due to high sodium concentration in the alkaline digestion, and improved accuracy was achieved. The Si recoveries obtained by applying this method varied from 100 to 102%, and the limit of detection was 0.4 g kg−1.
Anais do Encontro Nacional de Computação dos Institutos Federais (ENCompIF), 2020
Este trabalho apresenta o desenvolvimento de uma ferramenta de software denominada SIMUNOS, cujo ... more Este trabalho apresenta o desenvolvimento de uma ferramenta de software denominada SIMUNOS, cujo objetivo é simular o comportamento do sistema imunológico humano utilizando agentes inteligentes. A fim de avaliar nossa proposta foram feitos experimentos usando como métricas a variação na população de antígenos e neutrófilos. Os resultados demonstram a viabilidade do uso de Modelagem e Simulação Baseada em Agentes para estudar sistemas complexos.
O artigo vincula-se a ao suposto de que a localização das atividades econômicas não pode ser expl... more O artigo vincula-se a ao suposto de que a localização das atividades econômicas não pode ser explicada apenas por pressupostos da lógica formal, baseados na escolha racional, recorrendo ao escopo teórico da lógica histórica e dialética para compreender o próprio espaço e sua relação com a dinâmica econômica e social de acumulação do capital, tendo como objeto de análise empírica a produção siderúrgica no Brasil. Para aproximar a manifestação do fenômeno e visualizar sua distribuição no espaço, recorreu-se a produção do Índice de Concentração Normalizado (ICn) para todos os municípios brasileiros no ano de 2010, utilizando dados sobre o número de trabalhadores empregados nas 13 classes de atividades econômicas que compõe a cadeia produtiva de valorização do aço. Os resultados nos permitiram identificar as estruturas espaciais que são fundamentais para os processos de criação e circulação do valor, inseridos no processo de acumulação do capital. No entanto, além dos determinantes raci...
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