Neural Online Filtering Based on Preprocessed Calorimeter Data

Aiming at coping with LHC high event rate, the ATLAS collaboration has been designing a sophisticated three-level online triggering system. A significant number of interesting events decays into electrons, which have to be identified from a huge background noise. This work proposes a high-efficient L2 electron / jet discrimination algorithm based on artificial neural processing fed from preprocessed calorimeter information. The feature extraction part of the proposed system provides a ring structure for data description. Energy normalization is later applied to the rings, making the proposed system usable for a broad energy spectrum. Envisaging data compaction, Principal Component Analysis and Principal Component of Discrimination are compared in terms of both compaction rates and classification efficiency. For the pattern recognition section, an artificial neural network was employed. The proposed algorithm was able to achieve an electron detection efficiency of 96% for a false alarm of 7%

Object Play as a Positive Emotional State Indicator for Farmed Spotted Paca (Cuniculus paca)

We aimed to assess whether object play can be used as a positive emotional state indicator for farmed spotted pacas (Cuniculus paca) by examining its association with other positive welfare markers including affiliative behavior and low-amplitude vocalizations. We submitted six groups of spotted pacas (one male/two females per group) (N = 18) to an ABA experimental design (A1/A2: without ball; B: with three boomer balls). Object play behavior occurred only during phase B (mean = 35.5 s, SE = 6.4). The spotted pacas spent more time in affiliative and exploratory behaviors and less time engaging in agonistic interactions during phase B than in both control phases (A1 and A2) (p < 0.05). Moreover, the spotted pacas emitted more low-amplitude bark vocalizations during phase B than during either control phase (p < 0.05), and such vocalizations have previously been shown to indicate a positive affective state and low arousal level. Because the expression of object play was associated with a decrease in aggression, an increase in affiliative behavior, and an increase in low-amplitude barking, we suggest that object play can be used as a non-invasive indicator of positive emotional state in this species

Umbuzeiro como porta-enxerto de outras Spondias em condições de sequeiro: avaliações aos cinco anos.

O objetivo desse trabalho é relatar os resultados parciais de um experimento conduzido com a cajazeira, a cirigueleira, a cajá-mangueira, o umbuguela e o umbu-cajazeiro tendo sempre como porta-enxerto o umbuzeiro em condições de sequeiro, após cinco anos da sua instalação

Potencial de impacto da agricultura sobre os recursos hídricos na região do cerrado.

bitstream/CPAC-2009/24492/1/doc_56.pdfCRI655

Indicadores agrícolas das lavouras de subsistência financiadas pelo PRONAF no estado do Ceará.

Resumo: O objetivo deste estudo foi analisar a influência do PRONAF-Programa Nacional de Fortalecimento da Agricultura Familiar sobre os indicadores agrícolas: produção, área plantada e produtividade das lavouras de subsistências beneficiadas pelo Programa no Estado do Ceará, no período de 1999 a 2005. A pesquisa aplicou análises tabular e gráfica para estudar o comportamento das variáveis. Os resultados registraram que as lavouras de subsistência mais beneficiadas pelo Programa foram: algodão, arroz, cana-de-açúcar, feijão, mandioca e milho. Uma comparação destas lavouras com outras não beneficiadas: banana, castanha de caju e mamona revelou que apesar do financiamento as lavouras beneficiadas pelo PRONAF obtiveram um desempenho inferior ao das não beneficiadas em relação aos indicadores agrícolas analisados. Concluiu-se que a influência do PRONAF no desempenho dos indicadores agrícolas das lavouras de subsistência é muito pequena. Abstract: The objective of this study was to analyze influence the PRONAF-National Program of Fortifies of Familiar Agriculture on the agricultural pointers: production, planted area and productivity of subsistences the farmings benefited for the Program in the State of the Ceará, the period 1999 to 2005. The research applied tabulate analyses and graphical. The subsistences of farmings more benefited by the Program had been: cotton, rice, sugar cane-of-sugar, beans, cassava and maize. A comparison with others benefited not of these farmings: banana, chestnut and mamona disclosed that despite benefited the farmings financing for the PRONAF they had gotten an inferior performance to the one of not benefited in relation to the analyzed agricultural pointers. One concluded that the influence of the PRONAF in the performance of the agricultural pointers of the subsistence farmings is very small