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Search Results: 1 - 10 of 12757 matches for " Di Mare "
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Especificación de módulos con ejemplos y casos de prueba
Adolfo Di Mare
Revista Cubana de Ciencias Informáticas , 2012,
Abstract: Se plantea cómo aprovechar la formación del programador para que construya, por lo menos parcialmente, la especificación de sus módulos, incorporando en cada implementación datos de prueba que sean ejemplos de uso de cada rutina, con el fin de mejorar la reutilización de los módulos.
Emergent matter from 3d generalised group field theories
Alessandro Di Mare,Daniele Oriti
Physics , 2010, DOI: 10.1088/0264-9381/27/14/145006
Abstract: We identify classical solutions of a generalised group field theory model in 3 dimensions, and study the corresponding perturbations, deriving their effective dynamics. We discuss their interpretation as emergent matter fields. This allows us, on the one hand to test the proposed mechanism for emergence of matter as a phase of group field theory, and on the other hand to expose some limitations of the generalised group field theory formalism.
Opinion formation models based on game theory
Alessandro Di Mare,Vito Latora
Physics , 2006, DOI: 10.1142/S012918310701139X
Abstract: A way to simulate the basic interactions between two individuals with different opinions, in the context of strategic game theory, is proposed. Various games are considered, which produce different kinds of opinion formation dynamics. First, by assuming that all individuals (players) are equals, we obtain the bounded confidence model of continuous opinion dynamics proposed by Deffuant et al. In such a model a tolerance threshold is defined, such that individuals with difference in opinion larger than the threshold can not interact. Then, we consider that the individuals have different inclinations to change opinion and different abilities in convincing the others. In this way, we obtain the so-called ``Stubborn individuals and Orators'' (SO) model, a generalization of the Deffuant et al. model, in which the threshold tolerance is different for every couple of individuals. We explore, by numerical simulations, the dynamics of the SO model, and we propose further generalizations that can be implemented.
Schwartz, Gustavo;Mare, Rocco Alfredo Di;
Ciência Rural , 2001, DOI: 10.1590/S0103-84782001000100008
Abstract: the research has as objective to compare the esteemed diversity for seven of santa maria's counties, rs, brazil, with different urbane levels, based on the study of abundance, similarity and steadiness among 15 papilionidae species, from september 1994 to march 1995 and november 1995 to february 1996. captures were performed in intervals of thirty days, using entomological net, during intervals of 4 hours average. the butterflies were transported in glassine envelopes, individualized, properly labeled to the laboratory at ufsm biology department. the results suggest that the canopy carries out an important function in the distribution and abundance of those butterflies. the mechanisms that act in wider geographical scales can be different from those that act in smaller scales. coppices and urban landscapes can represent locals, where butterflies can use these complex environments exhibiting a reaction norm that minimizes competition and natural enemies' actions use these complex environments exhibiting a reaction norm that minimizes competition and natural enemies' actions.
Morfometria de Papilioninae (Lepidoptera, Papilionidae) ocorrentes em quatro localidades do Rio Grande do Sul, Brasil. III. Análise da forma das asas através de marcos anat?micos
Di Mare, Rocco Alfredo;Corseuil, Elio;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000400019
Abstract: this study investigated variation in the forewing morphology of 11 butterfly species (papilioninae), sampled in four communities of the rio grande do sul state. the analyses were performed using descriptors of shape derived from anatomical landmarks, wing areas, and area, length and width of the discal cell. differences in the consensus configuration for wing shape between male and female wings were not significant, showing a high correlation degree. the wing shape did not differ among the four communities investigated. the observed differences in wing shape of the species studied here should be better explained by independent changes associated with different areas of the wing, mainly with the discal cell.
Morfometria de Papilioninae (Lepidoptera, Papilionidae) ocorrentes em quatro localidades do Rio Grande do Sul, Brasil. II. Rela??o entre partes do corpo, aerodinamica de v?o e tipos de asas
Di Mare, Rocco Alfredo;Corseuil, Elio;
Revista Brasileira de Zoologia , 2004, DOI: 10.1590/S0101-81752004000400018
Abstract: this study investigated morphometric parameters associated to flight in papilioninae. comparisons were accomplished with body parts, wing form and dynamics of flight of 10 species collected at four different places. was analyzed the total mass of the body, thoracic mass, length and width and area of fore and hind wings, wing loading and aspect ratio and flight speed prevision. the analyses showed significative differences among species, sexes and communities investigated. the correlations between the length and width of fore wings were positive and significant for both sexes. the values obtained for wing loading, aspect ratio, and estimated flight speed, among sexes and species, were similar to those measured in the field or insectary.
Escarabeíneos copro-necrófagos (Coleoptera, Scarabaeidae, Scarabaeinae) de fragmentos de Mata Atlantica em Silveira Martins, Rio Grande do Sul, Brasil
Silva, Pedro G. da;Di Mare, Rocco A.;
Iheringia. Série Zoologia , 2012, DOI: 10.1590/S0073-47212012000200012
Abstract: the fauna of scarabaeinae (coleoptera: scarabaeidae) was sampled using pitfall traps baited with human excrement and rotten fish in forest fragments in silveira martins, rio grande do sul, brazil, from november 2010 to january 2011. a total of 1,611 individuals were sampled, belonging to six tribes, 11 genera and 28 species. the most abundant species were canthon latipes blanchard, 1845 (49.9%), c. chalybaeus blanchard, 1845 (13.9%), deltochilum sculpturatum felsche, 1907 (4.9%), and eurysternus caribaeus (herbst, 1789) (4.3%), which accounted for 73% of the total individuals captured. traps baited with human excrement captured a higher number of species than those baited with rotten fish. there was no statistically significant difference between the kinds of baits used in relation to the abundance of scarabaeinae. most of scarabaeinae species was represented by generalist feeding habits and tunneler behavior. the community sampled follows the general patterns of trophic and behavioral structure of scarabaeinae found throughout the neotropical region.
Morfometria e mortalidade em pupas e adultos de Brassolis astyra (Nymphalidae, Morphinae)
Salgado-Neto, Geraldo;Di Mare, Rocco Alfredo;
Iheringia. Série Zoologia , 2009, DOI: 10.1590/S0073-47212009000200012
Abstract: the data presented are based on brassolis astyra godart, 1824 individuals sampled randomly in four locations of the state of rio grande do sul, brazil: tupanciret?, s?o martinho da serra, santa maria - two places. except in s?o martinho da serra, the data were obtained in urban areas, on syagrus romanzoffianum palms (palmaceae). the following parameters were investigated: egg laying number, hatching eggs index, number of miscarried eggs, eggs positioning on the host plant, sex ratio, parasitoid index, emergency pupa-adult frequency, longevity of pupae and adult stages, mass and volume of the pupae and morphometric measurements of pupae and adults' wings. of eggs collected in tupanciret?, 46% hatched, 43% had been parasitized and 11% were miscarried. on the other hand, in s?o martinho da serra only 4% of the eggs collected hatched, 95% had been parasitized and 1% were miscarried. in the other localities no eggs were found. based on adults emerged from the pupae, it was verified that 77% of the males and females presented a normal morphology (viable) and 23% were malformed. the differences in the average values estimated for pupal longevity among the study sites, were statistically significant. the average frequency of adults was 0.47. the data obtained showed a sexual dimorphism in size (weigh) and form (volume) of the pupae. this suggests that the size and the form of the pupae can determine the adults' viability. such effect could be associated with a stabilizing selection, where would be associated to optima values average of weigh and form. although the origin of the sampled individuals varied, the parameters that determine the size and shape are in the same direction when comparing the two sexes. data on longevity and mortality suggest that the estimated values can be influenced by the variability and ecology of the population from which the larvae were sampled.
Diversity of the families of Coleoptera captured with pitfall traps in five different environments in Santa Maria, RS, Brazil
Fagundes, CK;Di Mare, RA;Wink, C.;Manfio, D.;
Brazilian Journal of Biology , 2011, DOI: 10.1590/S1519-69842011000300007
Abstract: the conservationist community is giving special attention to epigean insects due to their importance in the preservation of terrestrial habitats. this work analysed the diversity, richness, abundance and similarity at the soil surface of coleoptera composition among five environments: native forest, native grassland, pinus elliottii plantation, eucalyptus saligna plantation and degraded area by soil use in southern brazil, from october 2004 to october 2005. a total of 1,812 individuals were collected, attributed to 45 morph-species and 14 families. the higher richness and abundance were observed in native forest (31 species and 782 individuals) and the lower richness and abundance in degraded area (14 species, 86 individuals). scarabaeidae was the richest family captured, with nine morph-species, and the most frequent family was nitidulidae (1,113 individuals). according to the shannon-wiener index, the degraded area had smaller diversity in relation to the native forest, e. saligna and pinus elliottii plantations. no difference in diversity between evaluated areas was found for the simpson diversity index. the most dominant site was the degraded. the correlation between the total number of morph-species captured was not different to the degraded area and the p. elliottii monoculture (r = 0.47) and the correlation between the total individuals number was not significant between native forest and native grassland (r = 0.46) and between degraded areas and the other sites. according to the jaccard similarity index, the greatest similarity for the organism composition occurred between p. elliottii plantation and e. saligna plantation, presenting 74% of overlap.
Espécies de Adelpha Hübner, [1819] (Lepidoptera, Nymphalidae, Limenitidinae) ocorrentes no Rio Grande do Sul, Brasil
Di Mare, Rocco Alfredo;Teston, José Augusto;Corseuil, Elio;
Revista Brasileira de Entomologia , 2003, DOI: 10.1590/S0085-56262003000100012
Abstract: species of adelpha hübner, [1819] (lepidoptera, nymphalidae, limenitidinae) occurring in rio grande do sul state, brazil. based on literature, collections and sampled butterflies, a list of twelve species of adelpha hübner occurring in rio grande do sul state is presented, including host plants. adelpha epizygis fruhstorfer, [1916], adelpha falcipennis fruhstorfer, [1916], adelpha goyama schaus, 1902 and adelpha isis (drury, 1782) are new reports to rio grande do sul. the species are illustrated and keyed.
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