Topologies
Mostrando 1-12 de 246 artigos, teses e dissertações.
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1. Omni-Directional Wideband Antenna Array with Solar Cells
Abstract Distributed sensor networks are becoming more and more widespread due to their substantial benefits to our daily lives. These sensors, in most cases, are distributed in nature and even may require mobility. This, in turn, implies omnidirectional collector units to collect the data from various sensors at arbitrary directions. This work summarizes th
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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2. Analysis and Optimization of Ultra-Low-Power Rectifier with High Efficiency for Applications in Wireless Power Transmission and Energy Harvesting
Abstract The system capable of harvesting RF energy from the environment through an antenna and converting it into direct current energy to deliver to a load is known as rectenna. The rectifier circuit is an important part of the rectenna and its modeling is arduous since it employs a non-linear device working at extremely low power levels. In addition, ther
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-03
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3. Mitochondrial genomes of genus Atta (Formicidae: Myrmicinae) reveal high gene organization and giant intergenic spacers
Abstract The ants of the genus Atta are considered important pests to agriculture in the Americas, although Atta species are also important contributors to ecosystem functions in the various habitats in which they occur. The aim of this study was to assemble four complete mitochondrial genomes of the genus Atta, construct the phylogenomic tree, and analyze t
Genet. Mol. Biol.. Publicado em: 13/01/2020
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4. Simulation and Design of a Bandpass Filter Based on Substrate Integrated E-Plane Waveguide
Abstract This paper presents a bandpass filter based on a substrate integrated E-plane waveguide (SIEW) structure for wireless applications, at X-band. The SIEW geometry allows the development of new horizontally polarized filter topologies, unlike filter structures based on substrate integrated waveguide (SIW), which present vertical polarization (perpendic
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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5. Imagens dobráveis: posição e ubiquidade nos xamanismos ameríndios
Resumo Este artigo trata da relação entre a configuração da pessoa e as relações espaciais e temporais nos xamanismos das terras baixas da América do Sul. Partindo da análise de depoimentos e relatos etnográficos, busca-se aqui compreender,especificamente, experiências de ubiquidade características de processos de iniciação e de deslocamento. As
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 26/08/2019
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6. Dynamics of the botanical knowledge of the Laklãnõ-Xokleng indigenous people in Southern Brazil
ABSTRACT We analyzed the botanical knowledge of the Laklãnõ-Xokleng people in the Ibirama Laklãnõ Indigenous Territory. They are the last remnant of this ethnicity living in a unitary socio-political organization. The objective was to investigate the dynamics, distribution and transmission of botanical information. We interviewed 112 people in two villag
Acta Bot. Bras.. Publicado em: 19/06/2019
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7. Dynamics of the botanical knowledge of the Laklãnõ-Xokleng indigenous people in Southern Brazil
ABSTRACT We analyzed the botanical knowledge of the Laklãnõ-Xokleng people in the Ibirama Laklãnõ Indigenous Territory. They are the last remnant of this ethnicity living in a unitary socio-political organization. The objective was to investigate the dynamics, distribution and transmission of botanical information. We interviewed 112 people in two villag
Acta Bot. Bras.. Publicado em: 19/06/2019
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8. [PROVISIONAL] Mitochondrial genomes of genus Atta (Formicidae: Myrmicinae) reveal high gene organization and giant intergenic spacers
Abstract The ants of the genus Atta are considered an important pest to agriculture in Latin América, although, Atta species are important contributors to ecosystem functions in the various habitats in which they occur. Next-generation sequencing product millions or billions of short reads, however, is necessary to applied methods for assembly of the genome
Genet. Mol. Biol.. Publicado em: 10/06/2019
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9. The complete chloroplast genome sequences of three Spondias species reveal close relationship among the species
Abstract This study reports the complete chloroplast sequences of three Spondias species. The genome sequences were obtained for Spondias tuberosa, Spondias bahienses, and Spondias mombin using the Illumina sequencing technology by a combination of de novo methods and a reference-guided assembly using Sapindus mukorossi as reference. The genomes of S. tubero
Genet. Mol. Biol.. Publicado em: 11/03/2019
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10. ESTIMAÇÃO DA ALTURA DE ÁRVORES DE EUCALIPTO COM NEUROEVOLUTION OF AUGMENTING TOPOLOGIES (NEAT)
RESUMO O objetivo geral deste trabalho foi avaliar o método Neuroevolution of Augmenting Topologies (NEAT) para ajustar os pesos e a topologia de redes neurais artificiais (RNAs) na estimação da altura de árvores em povoamento clonais de eucalipto, bem como comparar com as estimativas obtidas por um modelo hipsométrico de regressão. Para a estimativa d
Rev. Árvore. Publicado em: 22/02/2018
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11. REFERENCE EVAPOTRANSPIRATION FORECASTING BY ARTIFICIAL NEURAL NETWORKS
ABSTRACT: Evapotranspiration (ET) is the main component of water balance in agricultural systems and the most active variable of the hydrological cycle. In the literature, few studies have used the forecast the day before via Artificial Neural Networks (ANNs) for the northern region of São Paulo state, Brazil. Therefore, this aimed to predict the reference
Eng. Agríc.. Publicado em: 2017-12
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12. Magnetic topology with axial flux concentration: a technique to improve permanent-magnet motor performance
Abstract This article presents a different topology for the magnetic circuit of permanent-magnet motors, using the concept of Axial Flux Concentration. By means of longitudinal extension of the rotor length beyond the stator core, a substantial increase in the flux per pole is enabled, improving the general performance of the machine. Even in low cost motors
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-12