Integrate And Fire
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Brazilian assessment on biodiversity and ecosystem services: summary for policy makers
Resumo: A biodiversidade e os ecossistemas são elementos importantes para enfrentar as crises socioeconômicas e ambientais nacionais e globais, uma vez que proporcionam novas oportunidades de desenvolvimento. Incorporar a biodiversidade na vida cotidiana é uma oportunidade de ouro para promover o uso sustentável da biodiversidade e dos serviços ecossist
Biota Neotrop.. Publicado em: 24/10/2019
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2. Mapping Forest Landscape Multifunctionality Using Multicriteria Spatial Analysis
ABSTRACT This paper presents a GIS methodological approach for mapping forest landscape multifunctionality. The aims of the present study were: (1) to integrate and prioritize production and protection functions by multicriteria spatial analysis using the Analytic Hierarchy Process (AHP); and (2) to produce a multifunctionality map (e.g., production, protect
Floresta Ambient.. Publicado em: 27/06/2019
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3. The Neuroid revisited: A heuristic approach to model neural spike trains
AbstractIntroduction: Since it was introduced in 2012, the Neuroid has been used to aid in understanding how functionally different neural populations contribute to sensory information processing. However, insights about whether this neuron-model could perform better than others or about when its utilization should be considered have not been provided yet.
Res. Biomed. Eng.. Publicado em: 18/12/2017
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4. A relação entre estrutura e função em redes complexas observada localmente / The relationship between structure and function in complex networks observed locally
O estudo de redes complexas tem despertado muita atenção nos últimos anos, principalmente pela sua capacidade de permitir a análise dos mais diversificados sistemas através de um mesmo conjunto de ferramentas matemáticas e computacionais. Até pouco tempo a ênfase nessa área era sobre o estudo das propriedades estruturas e sua influência em caracter
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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5. Middleware de serviços multi-camadas para redes de sensores sem fio
Technological evolutions in the microelectronic systems and in the wireless communication allowed the development of devices called sensor nodes, which are smalles have low cost and low energy consumption. The sensor nodes integrate sensing modules, data processing and of wireless communication. The use of sensor nodes in a distributed way makes possible the
Publicado em: 2010
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6. Networks with spatio temporal dynamics in computer sciences / Redes com dinâmica espaço-temporal e aplicações computacionais
In the last decades, an increasing interest in complex system study has been witnessed. Such systems have at least two integrated fundamental components: individual dynamical elements and an organizational structure which defines the form of interaction among those elements. Due to the dynamics of each element and the coupling complexity, various spatial-tem
Publicado em: 2009
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7. Chaotic solutions in the quadratic integrate-and-fire neuron with adaptation
The quadratic integrate-and-fire (QIF) model with adaptation is commonly used as an elementary neuronal model that reproduces the main characteristics of real neurons. In this paper, we introduce a QIF neuron with a nonlinear adaptive current. This model reproduces the neuron-computational features of real neurons and is analytically tractable. It is shown t
Springer Netherlands.
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8. Rapid local synchronization of action potentials: toward computation with coupled integrate-and-fire neurons.
The collective behavior of interconnected spiking nerve cells is investigated. It is shown that a variety of model systems exhibit the same short-time behavior and rapidly converge to (approximately) periodic firing patterns with locally synchronized action potentials. The dynamics of one model can be described by a downhill motion on an abstract energy land
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9. An egalitarian network model for the emergence of simple and complex cells in visual cortex
We explain how simple and complex cells arise in a large-scale neuronal network model of the primary visual cortex of the macaque. Our model consists of ≈4,000 integrate-and-fire, conductance-based point neurons, representing the cells in a small, 1-mm2 patch of an input layer of the primary visual cortex. In the model the local connections are isotropic a
National Academy of Sciences.
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10. Noise shaping in populations of coupled model neurons
Biological information-processing systems, such as populations of sensory and motor neurons, may use correlations between the firings of individual elements to obtain lower noise levels and a systemwide performance improvement in the dynamic range or the signal-to-noise ratio. Here, we implement such correlations in networks of coupled integrate-and-fire neu
The National Academy of Sciences.
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11. A psycholinguistic model of natural language parsing implemented in simulated neurons
A natural language parser implemented entirely in simulated neurons is described. It produces a semantic representation based on frames. It parses solely using simulated fatiguing Leaky Integrate and Fire neurons, that are a relatively accurate biological model that is simulated efficiently. The model works on discrete cycles that simulate 10 ms of biologic
Springer Netherlands.
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12. Continuous and lurching traveling pulses in neuronal networks with delay and spatially decaying connectivity
Propagation of discharges in cortical and thalamic systems, which is used as a probe for examining network circuitry, is studied by constructing a one-dimensional model of integrate-and-fire neurons that are coupled by excitatory synapses with delay. Each neuron fires only one spike. The velocity and stability of propagating continuous pulses are calculated
The National Academy of Sciences.