Sistema inteligente para el tratamiento de ruidos

El principal objetivo es lograr recuperar sonidos similares automáticamente de una base de datos con sonidos previamente almacenados. Se utiliza un sonido como argumento de la consulta y se obtienen los resultados con un grado de confiabilidad parametrizable. Este estudio se desarrolla en el marco de las investigaciones realizadas en el laboratorio AIGroup, bajo el nombre de proyecto FIC. En la propuesta del sistema se incluye la capacidad de distinción de ruidos, música, voz y combinación de los anteriores.Eje: Agentes y Sistemas InteligentesRed de Universidades con Carreras en Informática (RedUNCI

Sistema inteligente para el tratamiento de ruidos

El principal objetivo es lograr recuperar sonidos similares automáticamente de una base de datos con sonidos previamente almacenados. Se utiliza un sonido como argumento de la consulta y se obtienen los resultados con un grado de confiabilidad parametrizable. Este estudio se desarrolla en el marco de las investigaciones realizadas en el laboratorio AIGroup, bajo el nombre de proyecto FIC. En la propuesta del sistema se incluye la capacidad de distinción de ruidos, música, voz y combinación de los anteriores.Eje: Agentes y Sistemas InteligentesRed de Universidades con Carreras en Informática (RedUNCI

Endocrine responses to sport-related brain injury in female athletes: a narrative review and a call for action

Sport-related brain injury (SRBI) occurs when a blow to the head causes the brain to move back and forth in the skull, and can lead to neuroendocrine dysfunction. Research has shown that males and females experience and recover from SRBI differently, yet most of what is known regarding diagnosis, treatment, and recovery of SRBI is based on male normative data even though females meet or exceed incidence numbers of SRBIs compared to those of males. Females also have been known to have worse outcomes and a greater number of symptoms following SRBI than males. Research is limited as to why females have worse outcomes, but sex hormones have been suggested as a potential reason. SRBI may cause a dysregulation of the hypothalamic–pituitary–gonadal (HPG) axis, which is responsible for regulating the sex hormones estrogen and progesterone. Initial research has shown that SRBI may suppress estrogen and progesterone, and the concentration of these sex hormones could be indicative of injury severity and recovery trajectory. This review discusses the sex-specific differences in SRBI and also the future direction of research that is needed in order to identify the repercussions of SRBIs for female athletes, which will eventually lead to better clinical treatment, sideline care, and recovery profiles

Haptoglobin Phenotype, Preeclampsia Risk and the Efficacy of Vitamin C and E Supplementation to Prevent Preeclampsia in a Racially Diverse Population

Haptoglobin's (Hp) antioxidant and pro-angiogenic properties differ between the 1-1, 2-1, and 2-2 phenotypes. Hp phenotype affects cardiovascular disease risk and treatment response to antioxidant vitamins in some non-pregnant populations. We previously demonstrated that preeclampsia risk was doubled in white Hp 2-1 women, compared to Hp 1-1 women. Our objectives were to determine whether we could reproduce this finding in a larger cohort, and to determine whether Hp phenotype influences lack of efficacy of antioxidant vitamins in preventing preeclampsia and serious complications of pregnancy-associated hypertension (PAH). This is a secondary analysis of a randomized controlled trial in which 10,154 low-risk women received daily vitamin C and E, or placebo, from 9-16 weeks gestation until delivery. Hp phenotype was determined in the study prediction cohort (n = 2,393) and a case-control cohort (703 cases, 1,406 controls). The primary outcome was severe PAH, or mild or severe PAH with elevated liver enzymes, elevated serum creatinine, thrombocytopenia, eclampsia, fetal growth restriction, medically indicated preterm birth or perinatal death. Preeclampsia was a secondary outcome. Odds ratios were estimated by logistic regression. Sampling weights were used to reduce bias from an overrepresentation of women with preeclampsia or the primary outcome. There was no relationship between Hp phenotype and the primary outcome or preeclampsia in Hispanic, white/other or black women. Vitamin supplementation did not reduce the risk of the primary outcome or preeclampsia in women of any phenotype. Supplementation increased preeclampsia risk (odds ratio 3.30; 95% confidence interval 1.61-6.82, p<0.01) in Hispanic Hp 2-2 women. Hp phenotype does not influence preeclampsia risk, or identify a subset of women who may benefit from vitamin C and E supplementation to prevent preeclampsia

Maids, machines and morality in Brazilian homes

This paper engages with debates about the increasing use of paid domestic labour in Europe and the USA contributing with a reflection about the case of Brazil. Relations of gender, class and race are considered in the deployment of maids for housework, the patterns of consumption of household technologies and the moral reasoning of daily living with hierarchical divisions within the home. The paper considers some parallels between the Brazilian context and that of more developed countries and also the specificity of Brazil. Based on participant observation, secondary data and an ethnographic study, rich empirical data are weaved through to discuss material and moral dimensions of domestic labour and care. How does the availability of cheap domestic labour configure relations of inequality? How are social differences in the home lived with and justified? The exploration of the Brazilian case illuminates some of the problems, contradictions and possible consequences of wealthier households benefitting from the displacement of poor women that is currently happening through international migration. The paper argues that in Brazil the deflecting of tensions in gender divisions of labour in households onto a subordinate person has affected relations of equality between women and men and also the patterns of technological innovation to facilitate housework. These are outcomes to be guarded against in Europe and the United States in face of the current trends in 'global woman' relations

3d Facial Tracking From Corrupted Movie Sequences

In this paper we perform 3D face tracking on corrupted video sequences. We use a deformable model, combined with a predictive filter, to recover both the rigid transformations and the values of the parameters that describe the evolution of the facial expressions over time. To be robust, predictive filters need a good observation of the system's state. We describe a new method to measure, at each moment in time, the correct distribution of an observation of the parameters of a high-dimensional deformable model. This method is based on bounding the confidence regions of the 2D image displacements with affine forms, and propagating them into parameter space. Using Lindeberg's theorem, we measure a good Gaussian approximation of the parameters in a manner that avoids many of the traditional assumptions about the observations' distributions. We demonstrate in experiments on sequences with compression artifacts, and poor-quality video sequences of Lauren Bacall and Humphrey Bogart from the 1950s, that, without any learning involved, our method is sufficiently robust to extract information from degraded image sequences. In addition, we provide ground truth validation.1I880I885Bishop, G., Welch, G., An introduction to the kalman filter (2001) SIGGRAPH 2001 Course NotesBlake, A., Isard, M., (1998) Active Contours: the Application of Techniques from Graphics, Vision, Control Theory and Statistics to Visual Tracking of Shapes in Motion, , Springer-VerlagBlanz, V., Vetter, T., A morphable model for the synthesis of 3d faces (1999) SIGGRAPH, pp. 187-194. , AugustBrand, M., Bhotika, R., Flexible flow for 3d nonrigid tracking and shape recovery (2001) CVPR, pp. 315-322Bregler, C., Hertzmann, A., Biermann, H., Recovering Non-Rigid 3D Shape from Image Streams (2000) CVPRBrown, L., 3d head tracking using motion adaptive texture-mapping (2001) CVPR, pp. 998-1005Cascia, M., Sclaroff, S., Athitsos, V., Fast, reliable head tracking under varying illumination: An approach based on registration of texture-mapped 3d models (2000) IEEE Trans. PAMI, 22 (4), pp. 322-336Chung, K., (1974) A Course in Probability Theory, , Academic Press, Inc., 2nd editionCootes, T., Taylor, C., Active shape models - Their training and application (1995) CVIU, 61 (1), pp. 38-59De Carlo, D., Metaxas, D., Optical flow constraints on deformable models with applications to face tracking (2000) IJCV, 38 (2), pp. 99-127. , JulyDellaert, F., Burgard, W., Fox, D., Thrun, S., Using the condensation algorithm for robust, vision-based mobile robot localization (1999) CVPRGoldenstein, S., Vogler, C., Metaxas, D., Statistical cue integration in DAG deformable models (2003) IEEE Trans. PAMI, 25 (7), pp. 801-813Gordon, N., Salmon, D., Smith, A., A novel approach to nonlinear/nongaussian bayesian state estimation (1993) IEEE Proc. Radar Signal Processing, (140), pp. 107-113Isard, M., Blake, A., CONDENSATION: Conditional density propagation for visual tracking (1998) IJVC, 29 (1), pp. 5-28King, O., Forsyth, D., How does CONDENSATION behave with a finite number of samples? (2000) ECCV, pp. 695-709Maybeck, P., (1979) Stochastic Models, Estimation, and Control, , Academic PressMeer, P., Stewart, C.V., Tyler, D.E., Robust computer vision: An interdisciplinary challenge (2000) CVIU, (78), pp. 1-7Metaxas, D., (1996) Physics-based Deformable Models: Applications to Computer Vision, Graphics and Medical Imaging, , Kluwer Academic PublishersPighin, F., Szeliski, R., Salesin, D., Resynthesizing facial animation through 3d model-based tracking (1999) ICCV, pp. 143-150Pighin, F., Szeliski, R., Salesin, D., Modeling and animating realistic faces from images (2002) IJVC, 50 (2), pp. 143-169Stolfi, J., Figueiredo, L., (1997) Self-validated Numerical Methods and Applications, , 21° Colóquio Brasileiro de Matemática, IMPATao, H., Huang, T., Visual estimation and compression of facial motion parameters: Elements of a 3D model-based video coding system (2002) IJVC, 50 (2), pp. 111-125Wan, E.A., Van Der Merwe, R., (2001) Kalman Filtering and Neural Networks, p. 50. , chapter Chapter 7: The Unscented Kalman Filter, Wiley PublishingWang, L., Hu, W., Tan, T., Face tracking using motion-guided dynamic template matching (2002) ACCVWen, Z., Huang, T., Capturing subtle facial motions in 3d face tracking (2003) ICCV, pp. 1343-1350Shan, Z.Z.Y., Liu, Z., Model-based bundle adjustment with application to face modeling (2001) ICCV, pp. 644-65