Search results for "Normality"

Laparoscopic management of an isolated left fallopian tube torsion due to twisted Morgagni hydatid in a pre-menarcheal girl.

2014

Isolated torsion of fallopian tube, meanwhile uncommon, should be considered in diagnosis of pelvic and lower abdominal pain. US investigation is an useful diagnostic tool. A prompt diagnosis could avoid salpingectomy and preserve fertility. Laparoscopy, as the first approach, should be preferred. We report a case of isolated tubal torsion occurring in a premenarcheal girl successfully managed by laparoscopy.

Por una muerte digna para la educación artística

2020

Resumen: El año 2020 ha estado marcado por una pandemia global causante de una situación extraña e impredecible a nivel planetario. Todos los países del mundo se encuentran en procesos de prevención sanitaria contra la COVID-19, un virus que ataca agresivamente el sistema inmunológico de las personas. Intentar llevar a cabo cualquier actividad supone un riesgo de contagio, ya que el coronavirus se propaga sobre todo a través del aliento humano, lo cual ha supuesto la irrupción de nuevos hábitos cotidianos, como usar siempre la mascarilla, o no poder reunirse con otra gente para celebraciones y eventos, ni tampoco dar clase en el aula. Inmersos en esta tesitura, desfavorable para cualquier i…

Abnormal peripheral and central visual processing in migraine

2018

Sound induced flash illusion (SIFI) is an illusory cross modal (audio-visual) phenomenon critically dependent upon excitability of visual cortex. A recent study with SIFI confirmed hyperexcitability of visual cortex in migraine; patients with migraine show abnormality of chromatic perception. Here we explored the relationship between peripheral chromatic and central visual dysfunction in patients with migraine

A more efficient second order blind identification method for separation of uncorrelated stationary time series

2016

The classical second order source separation methods use approximate joint diagonalization of autocovariance matrices with several lags to estimate the unmixing matrix. Based on recent asymptotic results, we propose a novel unmixing matrix estimator which selects the best lag set from a finite set of candidate sets specified by the user. The theory is illustrated by a simulation study. peerReviewed

Social Interactions of Dat-Het Epi-Genotypes Differing for Maternal Origins: The Development of a New Preclinical Model of Socio-Sexual Apathy

2021

Social interaction is essential for life but is impaired in many psychiatric disorders. We presently focus on rats with a truncated allele for dopamine transporter (DAT). Since heterozygous individuals possess only one non-mutant allele, epigenetic interactions may unmask latent genetic predispositions. Homogeneous “maternal” heterozygous offspring (termed MAT-HET) were born from dopamine-transporter knocked-out (DAT-KO) male rats and wild-type (WT) mothers

Extracting Conditionally Heteroskedastic Components using Independent Component Analysis

2020

In the independent component model, the multivariate data are assumed to be a mixture of mutually independent latent components. The independent component analysis (ICA) then aims at estimating these latent components. In this article, we study an ICA method which combines the use of linear and quadratic autocorrelations to enable efficient estimation of various kinds of stationary time series. Statistical properties of the estimator are studied by finding its limiting distribution under general conditions, and the asymptotic variances are derived in the case of ARMA-GARCH model. We use the asymptotic results and a finite sample simulation study to compare different choices of a weight coef…

Characterization of Thermographic Normality of Horse Extremities

2017

Proper use of thermography in equine in veterinary medicine to detect abnormality requires determination of temperature distribution. The aim of the study was to define basal temperature distributions in the region of hoof and sole in healthy horses.

KERNEL ESTIMATION OF THE TRANSITION DENSITY IN BIFURCATING MARKOV CHAINS

2023

We study the kernel estimator of the transition density of bifurcating Markov chains. Under some ergodic and regularity properties, we prove that this estimator is consistent and asymptotically normal. Next, in the numerical studies, we propose two data-driven methods to choose the bandwidth parameters. These methods are based on the so-called two bandwidths approach.

Hulluus kulttuurisena kysymyksenä

2019

Psychological factors and defective colour vision

1995

In this study, involving students between 14 and 16 years old, the psychological dimensions of cognition and personality affected by red-green colour vision deficiencies were investigated. From the results of a factorial analysis it appears that the influence of colour vision abnormality on the psychological factors that we tested is always minor. Colour vision defect is correlated with such cognitive variables as spatial aptitude and visual difference perception, and with such personality variables as praxemia and submission. The weighting of the cognition and personality factors linked to colour vision abnormality, however, varies considerably and does not in any case contribute more than…