Classificação automática de documentos de arquivo corrente: estudo de caso sobre a Câmara Municipal de Palmela

Esta dissertação tem como propósito averiguar a aplicabilidade das metodologias de categorização ou classificação automática à classificação em arquivo corrente nas Câmaras Municipais, partindo do Município de Palmela como estudo de caso. A classificação continua a ser de fundamental importância numa época de proliferação de documentos eletrónicos e de sistemas informáticos que os gerem e uma solução que a simplifique e agilize mantendo a sua eficiência seria uma mais-valia. Os objetivos, numa primeira parte, serão caracterizar a classificação em arquivo e a importância da sua definição e implementação desde a origem e incluída em sistemas informáticos, e numa segunda parte caracterizar a tarefa de categorização ou classificação automática, a sua possível relação com a classificação em arquivo e a possibilidade de a automatizar. Para tal, foi realizado um teste e avaliação de resultados. Os resultados experimentais permitiram validar a hipótese colocada. /ABSTRACT - This essay has as intention to inquire the applicability of automatic categorization or classification methodologies to the classification of current archives of the City councils, having the City council of Palmela as case study. Classification continues to be of basic importance at a time of proliferation of electronic documents and informatics systems that manage them and a solution that simplifies and speeds it maintaining its efficiency would be of major value. The purposes will be, in the first chapters, to characterize classification in archives and the importance of its definition and implementation since the origin, in City councils and enclosed in those systems, and in the last chapters, to characterize the task of automatic categorization or classification, its possible relation with archival classification and the possibility of automatizing it. A test and evaluation of its results were made. The experimental results validate the hypothesis placed.

Geomorphological constraining of tsunami (?) run-up in the Alcantarilha coastal lowland (Central Algarve, Portugal)

The Alcantarilha lowland, partly barred by a well developed barrier, including foredunes covering Pleistocene-Holocene beachrock and aeolianite, develops across the Alcantarilha infilled estuary, the beach-dune extending further SE until the Salgados lagoon. A topographic and coring survey revealed a peculiar feature at the leeward toe of the dune ridge close to the inlet area: a sandy fan with location, shape and morphology suggesting emplacement by single or multiple overwash of the barrier tip rather than tidal forcing. Its storm or tsunami origin and age are under investigation, and the only time-constrain available at present is that it should post-date ca. 6600 cal BP, the most recent in situ aeolianite (Moura et al., 2007) dated so far. METHODS, DATA SET AND RESULTS The fan boundaries are distinctive in aerial photos and satellite images: it is roughly ellipsoidal, ~200 m wide and ~300 m elongated paralleling the shoreline, rising ~ 0.9-1.2 m above the surrounding floodplain surface. Detailed topography shows that its short axis aligns with SW-NE elongated (though irregular) depressions in the dune crest, which link the beach with the fan. This could have favoured funnelling of, or erosion by, water overtopping the barrier but, in either case, the fan should correspond to extreme and abrupt event(s) of coastal flooding. 18 trenches and cores were performed in the exposed area of the fan and nearby flood plain to obtain samples and data on its sedimentology, lithostratigraphy and geometry. The fan consists of well sorted and rounded sand (Fig. 2). It thins away and wedges out landwards of the apex (located near Alc29T) where it is partly covered by dune sand. Its lower boundary is undulating and marked by textural contrast between sand (fan) and underlying mud (alluvial/lagoonal); an accumulation of marine-sourced perforated pebbles showing limited lateral continuity may pinpoint this boundary near the foredune (core Alc 25, ca. 80 m westward of profile in Fig.1); mud-balls were also observed immediately above this surface in cores and trenches. As the washover was probably emplaced in a barred lagoonal/estuarine floodplain setting, the fan’s northern outer belt is enclosed by low-energy sediments (not shown in Fig. 2).

Análise de selecção de áreas de caça por uma população de francelho (Faco naumanni) na planície de Évora

Em Portugal, apesar de haver registos históricos da reprodução desta espécie um pouco por todo o país, o francelho (Falco naumanni, Fleischer 1818) desapareceu de quase todo o território nacional estando actualmente restrito à região do Alentejo. Em 2005, 80% da população encontrava-se nas ZPE´s de Castro Verde e Vale do Guadiana (62% e 18% da população nacional, respectivamente (Catry et al. 2005). Ao longo dos últimos anos têm vindo a ser desenvolvidos trabalhos de investigação com o objectivo de conhecer as necessidades ecológicas da espécie nas diferentes colónias, de forma a tentar conciliar a prática de uma agricultura economicamente viável com a conservação de uma espécie que está dependente das práticas agrícolas tradicionais. Os conflitos entre conservação e alteração das práticas agrícolas levam a desafios na gestão deste tipo de habitats. A população de francelho da ZPE Évora, após um período de 12 anos de ausência da espécie como reprodutora na região, tem vindo a aumentar em número de casais reprodutores, desde 1995. A distribuição da espécie na ZPE de Évora, a sua evolução e os principais factores que afectam a sua reprodução foram por nós estudados no ano de 2007. Foi ainda analisada a disponibilidade de habitat de caça para o francelho na área que envolve a principal colónia de Évora de modo a poderem ser sugeridas medidas de gestão adequadas à sua conservação. Concluiu-se que a manutenção de áreas de caça e a conservação dos locais de nidificação existentes e a criação de novos locais passa inevitavelmente pela sensibilização e informação dos proprietários sobre as medidas a aplicar. O recurso a instrumentos de financiamento neste sentido será primordial; ABSTRACT: In Portugal, although there are historical records of the reproduction of this species all over the country, the lesser kestrel (Falco naumanni) disappeared from almost all the national territory being currently restricted to the Alentejo region. In 2005, 80% of the population was in Castro Verde and Vale do Guadiana SPA (62% and 18% of the national population, respectively) (Catry et al. 2005). Over the past few years have been developed research in order to meet the ecological needs of the species in the different colonies, trying to reconcile the practice of an economically viable agriculture and the conservation of a species that is dependent on traditional farming practices. The conflicts between conservation and changing farming practices lead to challenges in managing this type of habitat. The lesser kestrel population of the Évora SPA, after a 12 year absence of the species as breeding in the region, has being increasing in the number of breeding pairs, since 1995. The distribution of the species in the SPA of Évora, its evolution and the main factors affecting their reproduction were studied in 2007. It was also analyzed the availability of hunting habitat for the kestrel in the area surrounding the main colony of Évora so that appropriate management measures can be suggested to their conservation. It was concluded that maintaining hunting areas and conservation of existing nesting sites and the creation of new local inevitably passes through the awareness and information of the owners on the measures to be implemented. The use of financial instruments and the in this direction will be paramount.

Between and within-year effects of haying on grassland bird

In recent years, haying has extended to Iberian Mediterranean dry grasslands potentially threatening grassland birds. We evaluate the between and within-year effects of haying on grassland birds in Alentejo region, Portugal. Our main goals were: (1) to investigate variations on bird abundance and species richness in the fields hayed, with respect to past haying events occurred in a field and its surroundings and (2) to investigate the shifts in bird abundance, species richness and spatial dynamics resulting from haying a field and its surrounding area in a given year. We conducted grassland bird censuses during the breeding season through point counts from 2012 to 2015. The relationship between bird abundance/richness and past haying events was investigated using Generalized Linear Models whereas within-year effects of haying were analysed using Generalized Additive Models. Bird abundance in a field was positively related with the surface hayed in the vicinity of that field in the previous year. However, contrasting yearly effects were found for non passerines. Also, some species prefer fields with less haying events or surface hayed, whereas others occur mostly in fields frequently managed for haying. Haying a field leads, in the short term, to its abandonment by birds, and thus to a decrease in bird abundance and, for some species, to spatial concentration in surrounding fields offering suitable habitat. We conclude that within-year effects of haying have higher impact on grassland birds than between-year effects. Maintaining haying at low levels by rotating haying yearly through the different fields in each farm and using partial haying may be an adequate way to ensure an effective management of grassland bird populations.