VoloGAN: Adversarial Domain Adaptation for Synthetic Depth Data

We present VoloGAN, an adversarial domain adaptation network that translates synthetic RGB-D images of a high-quality 3D model of a person, into RGB-D images that could be generated with a consumer depth sensor. This system is especially useful to generate high amount training data for single-view 3D reconstruction algorithms replicating the real-world capture conditions, being able to imitate the style of different sensor types, for the same high-end 3D model database. The network uses a CycleGAN framework with a U-Net architecture for the generator and a discriminator inspired by SIV-GAN. We use different optimizers and learning rate schedules to train the generator and the discriminator. We further construct a loss function that considers image channels individually and, among other metrics, evaluates the structural similarity. We demonstrate that CycleGANs can be used to apply adversarial domain adaptation of synthetic 3D data to train a volumetric video generator model having only few training samples

A parallel implementation of 3D Zernike moment analysis

Zernike polynomials are a well known set of functions that find many applications in image or pattern characterization because they allow to construct shape descriptors that are invariant against translations, rotations or scale changes. The concepts behind them can be extended to higher dimension spaces, making them also fit to describe volumetric data. They have been less used than their properties might suggest due to their high computational cost. We present a parallel implementation of 3D Zernike moments analysis, written in C with CUDA extensions, which makes it practical to employ Zernike descriptors in interactive applications, yielding a performance of several frames per second in voxel datasets about 2003 in size. In our contribution, we describe the challenges of implementing 3D Zernike analysis in a general-purpose GPU. These include how to deal with numerical inaccuracies, due to the high precision demands of the algorithm, or how to deal with the high volume of input data so that it does not become a bottleneck for the system

Composition of texture atlases for 3D mesh multi-texturing

We introduce an automatic technique for mapping onto a 3D triangle mesh, approximating the shape of a real 3D object, a high resolution texture synthesized from several pictures taken simultaneously by real cameras surrounding the object. We create a texture atlas by first unwrapping the 3D mesh to form a set of 2D patches with no distortion (i.e., the angles and relative sizes of the 3D triangles are preserved in the atlas), and then mixing the color information from the input images, through another three steps: step no. 2 packs the 2D patches so that the bounding canvas of the set is as small as possible; step no. 3 assigns at most one triangle to each canvas pixel; finally, in step no. 4, the color of each pixel is calculated as a smoothly varying weighted average of the corresponding pixels from several input photographs. Our method is especially good for the creation of realistic 3D models without the need of having graphic artists retouch the texture. Categories and Subject Descriptors (according to ACM CCS): Computer Graphics [1.3.7]: Three-Dimensional Graphics and Realism—Color, shading, shadowing, and textur

Septicemia caused by Paracoccidioides brasiliensis (Lutz, 1908) as the cause of death of an aids patient from Santos, São Paulo State, Brazil a nonendemic area

The first case of Paracoccidioides brasiliensis in Santos (Brazil) leading to septicemia and death of an HIV-positive patient is reported here. The patient was a 34-year-old female that presented essential fever and was only diagnosed after death by positive blood culture. The authors underscore the atypical nature of the case, since the patient was a female at fertile age who was born and had always lived in Santos, which is a nonendemic area for this infection.Relata-se o primeiro caso de Paracoccidioides brasiliensis, causando septicemia e morte em um paciente HIV positivo de 34 anos, do sexo feminino, natural e procedente de Santos, S.P.. A paciente apresentava-se com quadro febril inespecífico sendo que o diagnóstico só foi realizado pós morte da paciente através da positividade da hemocultura. Os autores chamam a atenção para a atipia do caso no que se refere ao fato de ser uma mulher em idade fértil e que nasceu e sempre residiu em Santos, área não endêmica para esta infecção

Sudden unexpected death in children with epilepsy: the many faces of fungal pathogenicity

Epilepsy is one of the most prevalent neurological diseases worldwide. the mortality rates are considerably higher in people with epilepsy than would be expected in a healthy population and sudden unexpected death in epilepsy (SUDEP) is the most frequent epilepsy-related category of death. Most children had seizures before the occurrence of the fatal event and autonomic dysfunction has been proposed as mechanisms of sudden death in this population. Is this sense, we raise the question whether is there a possible relationship between SUDEP in children and fungal pathogenicity. Indeed, the role of fungal pathogenicity in the establishment of epilepsy and even in cases of SUDEP has an interesting role in this scenario. Moreover, maternal infections during pregnancy have been associated with an increased risk for several brain disorders, however, this fact is still considered uncertain with respect to epilepsy.Based on this information and considering that maternal-fetal yeast infection is directly associated with an increased risk for epilepsy in childhood and that some patients have medically intractable epilepsy, the chances of these children suffering a fatal event cannot be overlooked by healthcare professionals. Thus, as exact knowledge regarding this association is lacking, some possibilities could be evaluated, and more emphasis on translational research would contribute to further progress to the knowledge of SUDEP. (C) 2012 Elsevier B.V. All rights reserved.Universidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Disciplina Neurol Expt, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Dept Psicobiol, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Disciplina Doencas Infecciosas, Dept Med, São Paulo, BrazilUPM, Neurobiol Lab, Programa Posgrad Disturbios Desenvolvimento, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Disciplina Neurol Expt, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Dept Psicobiol, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med UNIFESP EPM, Disciplina Doencas Infecciosas, Dept Med, São Paulo, BrazilWeb of Scienc

Imaging spectroscopic performances for a Si based detection system

We present the imaging and spectroscopic capabilities of a system based on a single photon counting chip (PCC) bump-bonded on a Si pixel detector. The system measures the energy spectrum and the flux, produced by a standard mammographic tube. We have also made some images of low contrast details, achieving good results

Rasgos del conocimiento de la lógica interna del fútbol en niños aprendices de futbolistas.(Original)

Today in day, we can see in the streets a great quantity of children playing the football in an informal way. The following study, had for objective the one of improving of the features of the knowledge of the internal logic of the football in children football player’s apprentices, starting from the following tactical-strategic foundations: game situations; width and depth in the game space; initiation and finish form of the play. The methods used for the study were the observation, the comparison and inferencial statistical. It was selected in way intentional 12 children with age of six and seven years of the municipality Plaza y Cerro, of Habana. The investigative results demonstrated that the tactical-strategic foundations that were studied should be objective high-priority in the initiation process of the children to the football and they improve applying a strategy that has an active, global and integrated focus, being necessary a bigger time of intervention to achieve significant changes in the individual and collective performance.Hoy en día, podemos ver en las calles una gran cantidad de niños jugando fútbol de manera informal. El siguiente estudio, tuvo por objetivo el de mejorar los rasgos del conocimiento de la lógica interna del fútbol en niños aprendices de futbolistas, a partir de los siguientes fundamentos tácticos-estratégicos: situaciones de juego; amplitud y profundidad en el espacio de juego; forma de iniciación y finalización de la jugada. Los métodos empleados para el estudio fueron la observación, la comparación y la estadística inferencial. Se seleccionó de forma intencional 12 niños con edad de seis y siete años del municipio Plaza y Cerro, de la provincia La Habana. Los resultados investigativos demostraron que los rasgos tácticos-estratégicos estudiados constituyen objetivos prioritarios en el proceso de iniciación de los niños al fútbol y se mejoran aplicando una estrategia que tiene un enfoque activo, global e integrado, siendo necesario un mayor tiempo de intervención para lograr cambios significativos en la actuación individual y colectiva

Surveillance programs for detection and characterization of emergent pathogens and antimicrobial resistance: results from the Division of Infectious Diseases, UNIFESP

Several epidemiological changes have occurred in the pattern of nosocomial and community acquired infectious diseases during the past 25 years. Social and demographic changes possibly related to this phenomenon include a rapid population growth, the increase in urban migration and movement across international borders by tourists and immigrants, alterations in the habitats of animals and arthropods that transmit disease, as well as the raise of patients with impaired host defense abilities. Continuous surveillance programs of emergent pathogens and antimicrobial resistance are warranted for detecting in real time new pathogens, as well as to characterize molecular mechanisms of resistance. In order to become more effective, surveillance programs of emergent pathogens should be organized as a multicenter laboratory network connected to the main public and private infection control centers. Microbiological data should be integrated to guide therapy, adapting therapy to local ecology and resistance patterns. This paper presents an overview of data generated by the Division of Infectious Diseases, Federal University of São Paulo, along with its participation in different surveillance programs of nosocomial and community acquired infectious diseases.Várias alterações epidemiológicas ocorreram no perfil das doenças infecciosas hospitalares e comunitárias nos últimos 25 anos. Mudanças sociais e demográficas possivelmente relacionadas com esse fenômeno incluem o rápido crescimento populacional, o aumento da migração urbana e deslocamento através de fronteiras internacionais por turistas e imigrantes, alterações nos habitats de animais e artrópodes que transmitem doença assim como o aumento no número de pacientes com deficiências nas respostas de defesa. Os programas contínuos de vigilância de patógenos emergentes e resistência antimicrobiana são necessários para a detecção em tempo real de novos patógenos assim como para caracterizar mecanismos moleculares de resistência. Para serem mais efetivos, os programasde vigilância dos patógenos emergentes devem ser organizados em uma rede de laboratórios multicêntricos ligados aos principais centros de controle de infecções, públicos e privados. Os dados microbiológicos devem ser integrados a guias terapêuticos adaptando práticas terapêuticas à ecologia local eaos padrões de resistência. O artigo apresenta uma revisão dos dados gerados pela Disciplina de Infectologia, Universidade Federal de São Paulo (UNIFESP), contemplando sua participação nos diferentes programas de vigilância de doenças infecciosas hospitalares e adquiridas na comunidade.Universidade Federal de São Paulo (UNIFESP) Departamento de Medicina Divisão de Doenças InfecciosasUniversidade Federal de São Paulo (UNIFESP) Departamento de Microbiologia, Imunologia e ParasitologiaUNIFESP, Depto. de Medicina Divisão de Doenças InfecciosasUNIFESP, Depto. de Microbiologia, Imunologia e ParasitologiaSciEL

Prevalence and spatial distribution of bovine brucellosis in the provinces of San Luis and La Pampa

La brucelosis bovina es una zoonosis causada principalmente por Brucella abortus y usualmente detectada en hembras que abortan. La enfermedad es endémica en la República Argentina, donde la vacunación con Brucella abortus cepa 19 es obligatoria en todas las hembras bovinas de 3 a 8 meses. El objetivo del estudio fue estimar la prevalencia y la distribución espacial de la brucelosis bovina en vacas de cría adultas en La Pampa y San Luis. Durante el año 2010, se tomaron 8.965 muestras de bovinos de 451 predios. El 1,8 % (n: 157) de los animales y el 19,7 % (n: 89) de los predios fueron positivos. La prevalencia de bovinos y de predios fue significativamente (p<0,05) mayor en La Pampa (2,3 % y 26 %, respectivamente) que en San Luis (1,4 % y 15,5 %, respectivamente), pero estas diferencias no justifican la aplicación de medidas de control diferenciales. La proporción de bovinos reaccionantes no difirió de la obtenida durante el 2005. Sin embargo, La Pampa mostró una prevalencia de predios infectados significativamente mayor. Los predios infectados tuvieron una prevalencia intrapredio comprendida entre 4 % y 40 %. No se detectaron diferencias significativas entre los predios infectados y los no infectados cuando se analizaron las siguientes variables independientes: superficie, densidad bovina, relación ternero/vaca, total de bovinos, número de vacas y vaquillonas ingresadas y número de predios proveedores de hacienda. Tampoco se encontraron diferencias entre predios infectados con prevalencia mayor o bien menor o igual al 10 %. Se detectó un agrupamiento espacial de predios infectados en el sudoeste de La Pampa que podría relacionarse con un menor desarrollo ganadero y con menores controles sanitarios en los predios. Es necesario intensificar las acciones de control existentes en los establecimientos de cría de la región para mejorar su capacidad productiva y proteger a la población humana de esta enfermedad.Bovine brucellosis is a zoonotic disease mainly caused by Brucella abortus and usually detected in females that abort. The disease is endemic in the Argentine Republic, where vaccination with Brucella abortus strain 19 is compulsory in all heifers of 3 to 8 months. The objective of this study was to estimate the prevalence of bovine brucellosis in cows of San Luis and La Pampa and its spatial distribution. Samples were obtained from 8965 cows and 451 farms, during the year 2010. 1.8% (n: 157) of cows and 19.7 % (n: 89) of farms were positive. The prevalence of cattle and farms was significant higher (p<0.05) in La Pampa (2.3% and 26%, respectively) than in San Luis (1.4% and 15.5%, respectively) but these differences are not relevant for implementing differential control measures. The proportion of reactive cows did not differ from that obtained during the year 2005. However, La Pampa showed a significantly higher prevalence of infected farms. The infected farms had an intra-farm prevalence between 4% and 40%. No differences between the infected and noninfected farms were observed when analyzing the following independent variables: area, bovine density, calf/cow index, total number of cattle, number of cows and heifers entering the sampled farms and number of farms supplying cattle. Farms with a prevalence greater than 10% or less than or equal to that value. A spatial cluster of infected farms was detected in the southwest of La Pampa; that situation might be related to a lower productive development and lower sanitary controls at farm level. It is necessary to intensify the current control actions in the breeding farms of the region to improve their productive capacity and to protect the human population from this disease.Fil: Aznar, María Natalia. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Ciencias Veterinarias y Agronomicas. Instituto de Patobiologia; ArgentinaFil: Linares, Facundo José. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; ArgentinaFil: Cosentino, Bernardo. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; ArgentinaFil: Sago, Andrés Miguel. Ministerio de Agricultura, Ganadería, Pesca y Alimento. Servicio Nacional de Sanidad y Calidad Agroalimentaria; Argentina. Instituto Nacional de Tecnologia Industrial. Centro Regional la Pampa; ArgentinaFil: la Sala, Luciano Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahia Blanca; Argentina. Universidad Nacional del Sur; ArgentinaFil: León, Emilio Arnaldo. Instituto Nacional de Tecnologia Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Ciencias Veterinarias y Agronomicas. Instituto de Patobiologia; ArgentinaFil: Duffy, Sergio Jose. Universidad Nacional de Rosario. Facultad de Ciencias Veterinarias; ArgentinaFil: Peréz, Andrés. University Of Minnesota; Estados Unido