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Museum collections indicate bird defaunation in a biodiversity hotspot
(Revista Biota Neotropica, 2017-01-01)
Ipanema National Forest, southeastern Brazil, once contained 340 bird species. Forest cover suffered for centuries from log exploitation and, as a result, most of the remaining forests are now an impoverished subset of the ...
Selection of the best air purifier system to urban houses using AHP
(Institute of Electrical and Electronics Engineers Inc., 2017-10)
Pollutants inside at houses are smoking, gas combustion, use of solvents, household cleaning chemicals, emissions from building materials, and contamination of the exterior aggravates the inside of the house. In this ...
O duplo grau de jurisdição e o recurso hierárquico no processo administrativo tributário dos Estados e do Distrito Federal
(2021)
Este trabalho objetiva analisar a compatibilidade com a Constituição Federal da estrutura adotada pelos Estados e pelo Distrito Federal para o processo administrativo fiscal no âmbito de suas competências. Para tanto, este ...
Named entities as privileged information for hierarchical text clustering
(Association for Computing Machinery - ACMInstituto Superior de Engenharia do Porto - ISEPPorto, 2014-07)
Text clustering is a text mining task which is often used to aid the organization, knowledge extraction, and exploratory search of text collections. Nowadays, the automatic text clustering becomes essential as the volume ...
Morphometry of terrestrial shield volcanoes
(Elsevier Science, 2018-03)
Shield volcanoes are described as low-angle edifices built primarily by the accumulation of successive lava flows. This generic view of shield volcano morphology is based on a limited number of monogenetic shields from ...
Causal Inference in the presence of causally connected units: a semi-parametric hierarchical structural equation model approach
(2017)
Abstract. Causal inference has become a dominant research area in both theoretical and empirical statistics. One of the main drawbacks of conventional frameworks is the assumption of no causal interactions among individuals ...
Hierarchical Wide-Area Control of Power Systems Including Wind Farms and FACTS for Short-Term Frequency Regulation
(Institute of Electrical and Electronics Engineers, 2012-11)
In this work a hierarchical scheme is proposed for the coordinated control of conventional synchronous generators, wind farm converters and flexible ac transmission systems. It comprises two levels, namely a fully decentralized ...
An energy-efficient hierarchical architecture for time-interleaved SAR ADC
(Institute of Electrical and Electronics Engineers, 2019-06)
An energy-efficient sampling architecture for time interleaved (TI) successive approximation register (SAR) analog-to-digital converters (ADCs) is proposed. The architecture avoids the use of sampling buffers in order to ...
An improved methodology for the hierarchical coordination of PEV Charging
(Institute of Electrical and Electronics Engineers, 2019-09)
This paper proposes an improved methodology for the hierarchical coordination of daily Plug-in Electric Vehicle (PEV) charging. The aim is to limit the power supplied by the primary distribution transformer (PDT) while ...