Parameter estimation in nonlinear time-varying systems through Takagi-Sugeno fuzzy models and wavelets

In this paper, a parameter estimation problem for a Takagi-Sugeno fuzzy dynamic system is formulated under the assumption that the premises in the membership functions are known. A linear expression in consequent parameters is obtained under this assumption. If the system is time-varying, the parameters can be determined by recursive estimation techniques. As an alternate approach, the use of multi-resolution wavelets is proposed. Furthermore, a parameter estimation toolbox for fuzzy dynamic models is developed which is then applied to a simple example and to the Mackey-Glass chaotic time series.Sociedad Argentina de Informática e Investigación Operativ

Nuevos registros de moluscos terrestres (Gastropoda: Stylommatophora) de Antofagasta, norte de Chile

Se presentan nuevos registros para Bostryx holostoma (Pfeiffer, 1846), Pupoides minimus (Philippi, 1860), Stephacharopa calderaensis Miquel y Araya, 2013 y una especie no identificada de la familia Charopidae, basados en ejemplares recolectados cerca de la ciudad de Antofagasta, en el norte de Chile. Se presenta el primer registro de S. calderaensis desde su descripción, extendiendo su distribución conocida hacia el norte en cerca de 350 km. Se presentan además detalles de la protoconcha de B. holostoma que también extiende su intervalo de distribución 145 km al sur. El microhábitat de estas especies en litorrefugios podría explicar la presencia de estos pequeños moluscos terrestres en el hiperárido norte chileno, destacando asimismo la necesidad de estudios adicionales en esta fauna poca conocida.New records for Bostryx holostoma (Pfeiffer, 1846), Pupoides minimus (Philippi, 1860), Stephacharopa calderaensis Miquel & Araya, 2013 and an unidentified charopid species are presented on the basis of specimens collected near the city of Antofagasta, in northern Chile. This is the first record for S. calderaensis after its description, extending its known distribution about 350 km northwards. Details on the protoconch of B. holostoma are presented for the first time, and this species extends its distributional range 145 km southwards. The microhabitat of these species in litho-refugia may explain the presence of these minute terrestrial mollusks in hyper arid northern Chile, further highlighting the need of additional studies of this neglected fauna.Fil: Araya, Juan Francisco. Universidad de Atacama; Chile. Universidad de Concepción; ChileFil: Miquel, Sergio Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; ArgentinaFil: Martínez, Edmundo. Antofagasta Minerals; Chil

Análisis comparativo de materiales didácticos y percepciones de profesores acerca de alimentación y nutrición en las comunas de Puente Alto, Santiago de Chile y Foz de Iguazú, Brasil.

Trabalho de conclusão de curso apresentado ao Instituto Latino-Americano de Ciências da Vida e a Natureza, da Universidade Federal da Integração Latino-Americana (UNILA), como requisito parcial à obtenção do título de Bacharel em Saúde Coletiva. Profa. Dra. Érika Marafon Rodrigues Ciacchi.El presente Trabajo de Conclusión de Curso llevó a cabo una investigación exploratoria, comparativa y cualitativa sobre la percepción de profesores de ciencias y educación física de la enseñanza básica de Chile (Puente Alto-Santiago de Chile) y Brasil (Foz do Iguaçu-Paraná) acerca de la enseñanza de la temática de alimentación y nutrición y la inserción de ésta en los libros didácticos, juntamente con el análisis de los documentos gubernamentales, tales como las Directrices Curriculares, Guías Alimentarias y Programas Nacionales de Alimentación. En un primer momento se realizó una investigación bibliográfica sobre los temas, para en un segundo momento aplicar entrevistas semi-estructuradas a profesores chilenos y brasileros que se desenvuelven en ambientes escolares. Posteriormente se analizó el discurso de dichos profesores mediante análisis de contenido de Bardin. Los libros didácticos fueron analizados desde el punto de vista de categorías sobre el tema encontrados en ellos. Los resultados de la investigación bibliográfica y del análisis de contenido de los discursos y libros son presentados mediante tablas comparativas y textos abarcando aspectos socio-bio-politico de cada realidad analizada, tales como la presencia de aspectos de los PCN en los materiales didácticos, relación de las Guías Alimentares con la práctica docente, formación de los profesores y principales desafíos sobre la enseñanza de estos temas en el espacio escolar; verificándose una despreparación para trabajar el tema por parte de los docentes y una carencia de políticas públicas orientadas a solucionar tal situación.Course Conclusion Work that conducted an exploratory, comparative anda qualitative research on the perception of Science and physical education teachers in primary school in Chile (Puente Alto-Santiago de Chile) and Brazil (Foz do Iguaçu-Paraná) on the subject of eating and nutrition and inserting it in the textbooks, also with the analysis of the government documents, such as the Curriculum Guidelines, Dietary Guidelines and National Food Program. At first a bibliographic research was conducted about the topics, then semi-structured interviews were applied to Chilean and Brazilians teachers and then the speech of those teachers was analyzed using content analysis of Bardin. The textbooks were analyzed from the point of view of categories about the topics found in them. The results of the literature and content analysis of speeches and books research are presented by comparative tables and texts covering socio-bio-political aspects in each reality analyzed, such as the presence of aspects of PCN in the didactic material, Alimentares Guides relationship to teaching practice, teacher training and major challenges for the teaching of these topics in the school environment; was verified that exists a lack of preparation of teachers and a lack of public policies to remedy the situation

Nuevo registro de Cuspidaria patagonica Smith, 1885 (Bivalvia: Cuspidariidae) en el norte de Chile

sin resume

Parameter estimation in nonlinear time-varying systems through Takagi-Sugeno fuzzy models and wavelets

In this paper, a parameter estimation problem for a Takagi-Sugeno fuzzy dynamic system is formulated under the assumption that the premises in the membership functions are known. A linear expression in consequent parameters is obtained under this assumption. If the system is time-varying, the parameters can be determined by recursive estimation techniques. As an alternate approach, the use of multi-resolution wavelets is proposed. Furthermore, a parameter estimation toolbox for fuzzy dynamic models is developed which is then applied to a simple example and to the Mackey-Glass chaotic time series.Sociedad Argentina de Informática e Investigación Operativ

Effect of Terminal Groups of Dendrimers in the Complexation with Antisense Oligonucleotides and Cell Uptake

Indexación: Web of Science.Poly(amidoamine) dendrimers are the most recognized class of dendrimer. Amino-terminated (PAMAM-NH2) and hydroxyl-terminated (PAMAM-OH) dendrimers of generation 4 are widely used, since they are commercially available. Both have different properties, mainly based on their different overall charges at physiological pH. Currently, an important function of dendrimers as carriers of short single-stranded DNA has been applied. These molecules, known as antisense oligonucleotides (asODNs), are able to inhibit the expression of a target mRNA. Whereas PAMAM-NH2 dendrimers have shown to be able to transfect plasmid DNA, PAMAM-OH dendrimers have not shown the same successful results. However, little is known about their interaction with shorter and more flexible molecules such as asODNs. Due to several initiatives, the use of these neutral dendrimers as a scaffold to introduce other functional groups has been proposed. Because of its low cytotoxicity, it is relevant to understand the molecular phenomena involving these types of dendrimers. In this work, we studied the behavior of an antisense oligonucleotide in presence of both types of dendrimers using molecular dynamics simulations, in order to elucidate if they are able to form stable complexes. In this manner, we demonstrated at atomic level that PAMAM-NH2, unlike PAMAM-OH, could form a well-compacted complex with asODN, albeit PAMAM-OH can also establish stable interactions with the oligonucleotide. The biological activity of asODN in complex with PAMAM-NH2 dendrimer was also shown. Finally, we revealed that in contact with PAMAM-OH, asODN remains outside the cells as TIRF microscopy results showed, due to its poor interaction with this dendrimer and cell membranes.http://nanoscalereslett.springeropen.com/articles/10.1186/s11671-016-1260-

EDUCA-SAN: AÇÕES FORMATIVAS EM SEGURANÇA ALIMENTAR E NUTRICIONAL A PARTIR DE ESTRATÉGIAS VIRTUAIS COM AGENTES DA COMUNIDADE ESCOLAR

O desenvolvimento da temática sobre Segurança Alimentar e Nutricional (SAN) no espaço escolar tem sido cada vez mais recomendado nas leis e diretrizes tanto nacionais como estrangeiras. A fim de fortalecer a rede de apoio entre universidades e comunidades escolares, o Centro Latino-Americano de Ciência e Tecnologia em Soberania, Segurança e Educação Alimentar e Nutricional da Região Sul – CeLASSAN/UNILA realizou um curso de atualização a distância, via plataforma Moodle, em parceria com os cursos de Nutrição de três universidades latino-americanas, ofertado às comunidades escolares da Argentina, do Brasil, do Chile e da Colômbia. O curso foi iniciado com uma turma de 111 cursistas, apresentado em 60 horas com o desenvolvimento de dez módulos, com ênfase nos elementos socioculturais, políticos, nutricionais e promotores da saúde. Os cursistas apontaram, a partir da participação nos fóruns e da apresentação de um projeto em SAN, questões importantes a serem problematizadas no ambiente escolar que podem empoderar não apenas educadores, mas os próprios estudantes na promoção de uma alimentação saudável e segura enquanto um direito humano

Electrochemical Hydrogen Evolution over Hydrothermally Synthesized Re-Doped MoS2 Flower-Like Microspheres

In this research, we report a simple hydrothermal synthesis to prepare rhenium (Re)- doped MoS2 flower-like microspheres and the tuning of their structural, electronic, and electrocatalytic properties by modulating the insertion of Re. The obtained compounds were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Structural, morphological, and chemical analyses confirmed the synthesis of poorly crystalline Re-doped MoS2 flower-like microspheres composed of few stacked layers. They exhibit enhanced hydrogen evolution reaction (HER) performance with low overpotential of 210 mV at current density of 10 mA/cm2, with a small Tafel slope of 78 mV/dec. The enhanced catalytic HER performance can be ascribed to activation of MoS2 basal planes and by reduction in charge transfer resistance during HER upon doping

Desarrollo de sistemas de scheduling para la nube

Los sistemas de scheduling son el corazón de todo sistema de planificación de la producción. Las nuevas tecnologías traen consigo amenazas y oportunidades para la industria, en este contexto, los sistemas de scheduling no escapan a esta realidad. El objetivo de este proyecto es investigar sobre métodos y técnicas en pos de integrar las tecnologías de cloud computing, web de tiempo real, software product lines y de los solucionadores para optimización en el desarrollo de sistemas de scheduling de producción.Eje: Agentes y Sistemas Inteligentes.Red de Universidades con Carreras en Informátic

Desarrollo de sistemas de scheduling para la nube

Los sistemas de scheduling son el corazón de todo sistema de planificación de la producción. Las nuevas tecnologías traen consigo amenazas y oportunidades para la industria, en este contexto, los sistemas de scheduling no escapan a esta realidad. El objetivo de este proyecto es investigar sobre métodos y técnicas en pos de integrar las tecnologías de cloud computing, web de tiempo real, software product lines y de los solucionadores para optimización en el desarrollo de sistemas de scheduling de producción.Eje: Agentes y Sistemas Inteligentes.Red de Universidades con Carreras en Informátic