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Isabel Alves
University of Lisbon
34Publications
12H-index
884Citations
Publications 34
Newest
Maria do Carmo Lourenço Gomes1
Estimated H-index: 1
(University of Lisbon),
Celeste Rodrigues2
Estimated H-index: 2
,
Isabel Alves12
Estimated H-index: 12
This paper introduces the project EFFE that applies and develops a methodology for data collection primarily intended for the study of the correlation between oral and written production in European Portuguese, and that also aims to serve a broad range of studies in different areas. It comprehends (i) a brief review of two scientific contexts occupied with learning to read and write, which are at the basis of the methodological planning of future corpora ; (ii) the methodology adopted for the co...
Published on Dec 1, 2015in Extremes 1.78
Isabel Alves12
Estimated H-index: 12
(University of Lisbon),
Miguel de Carvalho6
Estimated H-index: 6
(UC: Pontifical Catholic University of Chile)
Maria Ivette Gomes was born July 21, 1948 in Almada, Portugal. After obtaining a BSc in Pure Mathematics in 1970 from the University of Lisbon, Ivette moved in to the University of Sheffield where she completed her PhD in Statistics in 1978, under the supervision of Clive Anderson. Research on statistics of extremes in Portugal has now a long tradition, with Ivette being one of the founders of the movement, along with Tiago de Oliveira (1928–1992). Ivette was co-founder of the Portuguese Statist...
Published on Nov 1, 2015in Saber & Educar
Isabel Alves12
Estimated H-index: 12
(University of Lisbon),
Patrícia Costa (University of Lisbon)+ 1 AuthorsCeleste Rodrigues2
Estimated H-index: 2
(University of Lisbon)
In this article, we present a new corpus of writing and speech of children (Portuguese L1) in the early years of schooling: EFFE-On. Its content is available online for research, addressing mainly teachers, linguists and speech therapists. The EFFE-On was developed within the project “Do you write as you speak - Do you speak as you write?” in the Linguistic Centre of the University of Lisbon. Among other applications, the corpus enables: the identification of unconventional spellings; the compar...
Published on Jan 1, 2015
Isabel Alves12
Estimated H-index: 12
(University of Lisbon),
Pedro Rosário3
Estimated H-index: 3
(University of Lisbon)
In a meteorological setup, considering a data set of daily rainfall in Barcelos, Portugal, a survey of possible parametric and semi-parametric approaches in Extreme Value Theory is presented, with the main goal of the analyzing high observations of records over time, since these might entail negative consequences for society. These analysis embraces estimation of several extreme value parameters, including return levels associated with \(T\)-year return periods, for large \(T\).
Published on Jan 1, 2015
J.P. Gouveia2
Estimated H-index: 2
,
Pedro Rodrigues2
Estimated H-index: 2
+ 3 AuthorsCatarina Lopes2
Estimated H-index: 2
Published on Oct 1, 2014in Agricultural Water Management 3.54
Paula Paredes18
Estimated H-index: 18
(Instituto Superior de Agronomia),
J.P. de Melo-Abreu4
Estimated H-index: 4
(Instituto Superior de Agronomia)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia)
Abstract Several maize field experiments, including deficit and full irrigation, were performed in Ribatejo region, Portugal and were used to assess water stress impacts on yields using the AquaCrop model. The model was assessed after its parameterization using field observations relative to leaf area index (LAI), crop evapotranspiration, soil water content, biomass and final yield data and also using default parameters. LAI data were used to calibrate the canopy cover (CC) curve. Results showed...
Published on Jul 1, 2014in Agricultural Water Management 3.54
Paula Paredes18
Estimated H-index: 18
(University of Lisbon),
Gonçalo C. Rodrigues10
Estimated H-index: 10
(University of Lisbon)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
Published on Mar 1, 2014in Agricultural Water Management 3.54
Paula Paredes18
Estimated H-index: 18
(University of Lisbon),
Gonçalo C. Rodrigues10
Estimated H-index: 10
(University of Lisbon)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
Several maize field experiments, including deficit and full irrigation, were used to assess irrigation impacts on yields. The SIMDualKc water balance model was first calibrated and validated to obtain the basal crop coefficients (Kcb) and the depletion fractions for no stress (p) relative to all crop growth stages. The values 0.15, 1.15, 0.30 were obtained for, respectively, the Kcb ini, Kcb mid and Kcb end, as well as p=0.50. The SIMDualKc model provided the partitioning of crop ET into transpi...
Published on Aug 1, 2013in Agricultural Water Management 3.54
Gonçalo C. Rodrigues10
Estimated H-index: 10
(Instituto Superior de Agronomia),
Paula Paredes18
Estimated H-index: 18
(Instituto Superior de Agronomia)
+ 2 AuthorsLuis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia)
This study aims to assess the economic feasibility of full and deficit irrigated maize using center pivot, set sprinkler systems and drip tape systems through multicriteria analysis. Different irrigation treatments were evaluated and compared in terms of beneficial water use and physical and economical water productivity for two commodity prices and three irrigation systems scenarios applied to a medium and a large field of 5 and 32ha respectively. Results show that deficit treatments may lead t...
Published on Jan 1, 2013
Luis S. Pereira51
Estimated H-index: 51
,
Isabel Alves12
Estimated H-index: 12
This article summarizes the essential definitions and methodologies for estimating crop water and irrigation requirements. The concept of reference evapotranspiration is assumed relative to a crop canopy such as grass but with constant crop characteristics. The hypotheses on which this approach is based are discussed relative to crop surface and aerodynamic resistances to heat and vapor fluxes. The crop evapotranspiration is defined using crop coefficients applied to the reference evapotranspira...
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