Annotated checklist and illustrated key to braconid parasitoids (Hymenoptera, Braconidae) of economically important fruit flies (Diptera, Tephritidae) in Brazil

The braconid parasitoids of fruit-infesting flies have been more intensively studied from the middle to late 1990s, when taxonomic research was restarted in Brazil. At the same time, efforts toward the biological control of fruit flies intensified, and an exotic species, Diachasmimorpha longicaudata, was introduced. In the decade 2010, another exotic species, Fopius arisanus, was introduced, and two new species of Doryctobracon were described. Currently, 12 species of braconids from the subfamilies Alysiinae (two species) and Opiinae (10 species) are associated with fruit flies of economic importance in Brazil, two of which are introduced species. More than half of the species belong to the genus Doryctobracon, with D. areolatus (Szépligeti) the most widely distributed species in Brazil.Fil: Fidelis Marinho, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Catamarca. Universidad Nacional de Catamarca. Centro de Investigaciones y Transferencia de Catamarca; ArgentinaFil: Costa, Valmir A.. Universidade Estadual de Campinas; BrasilFil: Zucchi, Roberto A.. Universidade do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz; Brasi

Mid-callosal Plane Determination Using Preferred Directions From Diffusion Tensor Images

The corpus callosum is the major brain structure responsible for inter-hemispheric communication between neurons. Many studies seek to relate corpus callosum attributes to patient characteristics, cerebral diseases and psychological disorders. Most of those studies rely on 2D analysis of the corpus callosum in the mid-sagittal plane. However, it is common to find conflicting results among studies, once many ignore methodological issues and define the mid-sagittal plane based on precary or invalid criteria with respect to the corpus callosum. In this work we propose a novel method to determine the mid-callosal plane using the corpus callosum internal preferred diffusion directions obtained from diffusion tensor images. This plane is analogous to the mid-sagittal plane, but intended to serve exclusively as the corpus callosum reference. Our method elucidates the great potential the directional information of the corpus callosum fibers have to indicate its own referential. Results from experiments with five image pairs from distinct subjects, obtained under the same conditions, demonstrate the method effectiveness to find the corpus callosum symmetric axis relative to the axial plane.941

Astrocomp: a web service for the use of high performance computers in Astrophysics

Astrocomp is a joint project, developed by the INAF-Astrophysical Observatory of Catania, University of Roma La Sapienza and Enea. The project has the goal of providing the scientific community of a web-based user-friendly interface which allows running parallel codes on a set of high-performance computing (HPC) resources, without any need for specific knowledge about parallel programming and Operating Systems commands. Astrocomp provides, also, computing time on a set of parallel computing systems, available to the authorized user. At present, the portal makes a few codes available, among which: FLY, a cosmological code for studying three-dimensional collisionless self-gravitating systems with periodic boundary conditions; ATD, a parallel tree-code for the simulation of the dynamics of boundary-free collisional and collisionless self-gravitating systems and MARA, a code for stellar light curves analysis. Other codes are going to be added to the portal.Comment: LaTeX with elsart.cls and harvard.sty (included). 7 pages. To be submitted to a specific journa

Reconstructing land's appearance

An important and largely area of computer image generation is that related with geographic information. Geographic data can be used for analysis, design and evaluation in natural-resource assessment, regional planning, and large-area landscape design. While Geographic Information Systems (GIS) has focused on delivering traditional cartographic representations, some people demands others aspects be covered: the use of "appropiate" representations to help viewers to understand the information. This is the case of the visualization of the land's topography and how the changes on it affect its appearance. Strangely, the combination of GIS and visualization area still remains unexplored. The elds seem to complement on another, yet they have developed in parallel and the interaction between them is important in providing usable interactive systems. This paper presents a visualization approach of a topographic surface spatially inter- polated from Topographic Reliefs. We hope this will help people with no background in scientific visualization orient themselves to the image.Área: Procesamiento de Imágenes - Tratamiento de Señales - Computación Gráfica - VisualizaciónRed de Universidades con Carreras en Informática (RedUNCI

What are the Best Hierarchical Descriptors for Complex Networks?

This work reviews several hierarchical measurements of the topology of complex networks and then applies feature selection concepts and methods in order to quantify the relative importance of each measurement with respect to the discrimination between four representative theoretical network models, namely Erd\"{o}s-R\'enyi, Barab\'asi-Albert, Watts-Strogatz as well as a geographical type of network. The obtained results confirmed that the four models can be well-separated by using a combination of measurements. In addition, the relative contribution of each considered feature for the overall discrimination of the models was quantified in terms of the respective weights in the canonical projection into two dimensions, with the traditional clustering coefficient, hierarchical clustering coefficient and neighborhood clustering coefficient resulting particularly effective. Interestingly, the average shortest path length and hierarchical node degrees contributed little for the separation of the four network models.Comment: 9 pages, 4 figure

Evaluating the spoken dialogue system of a conversational character: A Simulation Study

Currently, there are many applications like human-computer interactions in which speech technology plays an important role. In particular, embodied conversational character interfaces research has produced widely divergent results and it has tended to focus on the character’s dialog capabilities associated with reasoning. Conversely, the present work attempts to evaluate a conversational character from interactionrelated aspects. This paper describes an analysis of a conversational character spoken dialogue system using a discrete event simulator. The simulation model was implemented in the ARENA traditional simulator. Simulation results show that sometimes the response time from the speech conversational character can be too long to user, as well as environment noise is an important aspect of the system to be improved.XIV Workshop Computación Gráfica, Imágenes y Visualización (WCGIV).Red de Universidades con Carreras en Informática (RedUNCI

Matemática para Ginásio Moderno, 2ª série, 1971.

Este livro possui dimensões 220mm x150mm, com 180 páginas encadernadas,costurado. O exemplar original pertence ao acervo do Laboratório de Estudos e Pesquisa Científica (LEPAC), da Universidade Federal da Paraíba – Campus I – João Pessoa/PBSegundo volume da série Matemática para o Ginásio Moderno, apresenta uma parte teórica de forma resumida, expondo apenas o essencial, acompanhada de exercícios de exploração e reforço. No final de cada capítulo apresenta uma coleção de exercícios. No final do livro apresenta um apêndice com numerosos exercícios e problemas que contemplam todos os assuntos estudados. Divide-se em oito capítulos que contemplam os seguintes conteúdos: O conjunto Q; Raiz quadrada em Q; Conjunto Q x Q; Função linear; Sentenças e conjuntos; Equações com uma incógnita; Sistemas lineares; Inequações