Search results for "ovarian"

Robustness of texture parameters for color texture analysis

2006

This article proposes to deal with noisy and variable size color textures. It also proposes to deal with quantization methods and to see how such methods change final results. The method we use to analyze the robustness of the textures consists of an auto-classification of modified textures. Texture parameters are computed for a set of original texture samples and stored into a database. Such a database is created for each quantization method. Textures from the set of original samples are then modified, eventually quantized and classified according to classes determined from a precomputed database. A classification is considered incorrect if the original texture is not retrieved. This metho…

Weighted nonlinear correlation for controlled discrimination capability

2002

We recently demonstrated the high discrimination capability as well as the high sensitivity to small intensity variations of the sliced orthogonal nonlinear generalized (SONG) correlation. This nonlinear correlation has a correlation matrix representation. Previous papers considered only the principal diagonal elements of the correlation matrix. We propose using the off-diagonal non-zero elements of the SONG correlation matrix in order to achieve variable discrimination performance and controlled detection adapted to the gray-scale variations. Moreover, we introduce negative coefficients in order to improve the discrimination properties of the SONG correlation. To control the degree of reco…

Psicothema

2009

Resumen tomado de la publicación A pesar de que un 26 por ciento de niños con TDAH tiene una dificultad específica en el aprendizaje de las matemáticas (DAM) las investigaciones han sido escasas. El presente estudio se planteó estudiar: 1) el perfil de los niños con TDAH+DAM en habilidades cognitivas y metacognitivas de cálculo y solución de problemas, en comparación con niños con TDAH, niños con DAM, y niños sin problemas; 2) la severidad del déficit en funcionamiento ejecutivo (FE) en niños con TDAH+DAM. Al comparar los grupos DAM, TDAH, TDAH+DAM y grupo de niños sin problemas, los resultados mostraron un claro déficit cognitivo y metacognitivo en el rendimiento matemático del grupo TDAH+…

Partitioning ET measurements for sparse vegetation: application to an olive orchard.

2011

Exploratory remarks and discussion on a potential program for interlock even more the mathematics and physics

2021

These remarks are endowed with exploratory argumentation for disrupt further discussion and in favor of the in-depth consolidation of a mathematical and physics identification based on 2 key concepts: 1) finite support and 2) a notion of infinite intrinsic to the usage of the complex numbers. General relativity shows up linked to a kind of a Gelfand representation as an approximation of an analog of a hidden Markov Model. This has deep connections with the Stone–Weierstrass theorem and these discussion are an invitation to the physics community to study the physics x mathematics identification in the case of a holding true multiverse hypothesis. Photon in this setup stands to the analog of …

The relationship among beliefs about problem solving, epistemological beliefs, grade level, sex, and problem solving achievement: A study in secondar…

2020

The first purpuse of this investigation was to study the effects of sex and grade level on secondary students’ beliefs about epistemology and problem solving. The second purpuse was to analyze the contribution of both belief systems, grade level, and sex to problem solving achievement. One hundred and forty-four High School students, 9th and 11th grade students, took part in the study. Two questionnaires (Schommer and StageKloosterman’s questionnaires) and a problem solving test (two word problems of the PISA tests) were administered to these students. Two ANOVAs, an ANCOVA, and a multiple regression analysis were carried out from data obtained in the investigation. In the light of the fore…

Detección de cambios anómalos mediante teledetección

2016

Este trabajo de fin de máster aborda el problema de la detección automática de cambios anómalos ocurridos en la superficie terrestre mediante imágenes satelitales de la Tierra. Dichos cambios implican cualquier variación fuera de lo típicamente esperado que se produzca en un área determinada del planeta. Su detección es muy importante dentro de las ciencias de la Tierra, ya que en el contexto actual de calentamiento global y cambio climático, presentan una importancia muy elevada en la escala global y local, permitiendo descubrir nuevos efectos generados por las actividades humanas que alteren el medio natural, y también posibles desestabilizaciones a gran escala entre los sistemas terrestr…

Advanced spatio-temporal point processes for the Sicily seismicity analysis

2018

Due to the complexity of the generator process of seismic events, we study under several aspects the interaction structure between earthquake events using recently developed spatio-temporal statistical techniques and models. Using these advanced statistical tools, we aim to characterise the global and local scale cluster behaviour of the Easter Sicily seismicity considering the catalogue data since 2006, when the Italian National Seismic Network was upgraded and earthquake location was sensibly improved. Firstly, we characterise the global complex spatiotemporal interaction structure with the space-time ETAS model where background seismicity is estimated non-parametrically, while triggered …

Bayesian reanalysis of a quantitative trait locus accounting for multiple environments by scaling in broilers1

2006

A Bayesian method was developed to handle QTL analyses of multiple experimental data of outbred populations with heterogeneity of variance between sexes for all random effects. The method employed a scaled reduced animal model with random polygenic and QTL allelic effects. A parsimonious model specification was applied by choosing assumptions regarding the covariance structure to limit the number of parameters to estimate. Markov chain Monte Carlo algorithms were applied to obtain marginal posterior densities. Simulation demonstrated that joint analysis of multiple environments is more powerful than separate single trait analyses of each environment. Measurements on broiler BW obtained from…

Different effects of interferons, interleukin‐1β and tumor necrosis factor‐α in normal (OSE) and malignant human ovarian epithelial cells

1996

Ovarian cancer arises mostly from the ovarian surface epithelium. The aim of our study was to compare the effects of cytokines in ovarian surface epithelial (OSE) cells and in ovarian carcinoma cells. Proliferation and expression of surface antigens (CA-125 and classes I and II antigens of the major histocompatibility complex [MHC]) were measured in OSE cells obtained from 7 different patients and 7 ovarian carcinoma cell lines. Proliferation of OSE cells remained unaffected by interferon (IFN)-α or IFN-γ, whereas interleukin-I (IL-I) and tumor necrosis factor (TNF) increased cell growth. Proliferation of ovarian carcinoma cells was reduced by both types of IFN as well as TNF but was not af…