Results 41 to 50 of about 19,259 (181)

DETERMINACIÓN DE CONSTANTES DE E QUILIBRIO DEL ÁCIDO ASCÓRBICO EN MEDIO ACUOSO POR POLARIMETRÍA

open access: yesAvances en Ciencias e Ingeniería, 2017
En este trabajo se determina n l as constantes de acidez del ácido ascórbico ( AA ) por polarimetría, mediante una titulación ácido - base . Los resultados obtenidos por esta técnica se procesaron mediante el ajuste de los ángulos de rotación
Lucero Hernández-García   +4 more
doaj  

No Model Fits All: Dynamic Ensemble Species Distribution Model Reveals Seasonal Patterns of Essential Habitat Use by Ocean Giants in the Southwest Pacific

open access: yesDiversity and Distributions, Volume 32, Issue 4, April 2026.
ABSTRACT Aim Essential habitats are areas that support biological and ecological functions critical for species' survival. For highly mobile and elusive marine species, aggregations in these habitats provide rare opportunities to study their ecology and inform conservation.
Ingo B. Miller   +9 more
wiley   +1 more source

Modelos de regresión lineal con redes neuronales

open access: yes, 2014
Los modelos de redes neuronales pueden ser considerados como nuevos paradigmas para el análisis estadístico de regresión lineal. Una de las razones del uso de las redes neuronales es que no necesitan el cumplimiento de supuestos teóricos como en los ...
Menacho Chiok, Cesar Higinio
core   +2 more sources

Medidas de no linealidad en regresión no lineal

open access: yesRevista Colombiana de Estadística, 1994
Usualmente la extensión de las inferencias de los modelos de regresión lineal al caso no lineal se han hecho obviando el grado de no linealidad y la importancia de la bondad de ajuste en muestras pequeñas.
Grisales Romero Hugo
doaj  

Prevalence of Preoperative Anxiety and Associated Factors in Hallux Valgus Surgery

open access: yesJournal of Foot and Ankle Research, Volume 19, Issue 1, March 2026.
ABSTRACT Introduction Preoperative anxiety is that which is motivated by the emotional and physical stressors inherent in a surgical intervention. The aim of this study was to assess preoperative anxiety as well as the associated sociodemographic and surgical factors in the context of a common foot surgery procedure, such as surgery for the correction ...
Pedro C. Ramírez‐Navarro   +7 more
wiley   +1 more source

Local winds south of Sierra de Misantla (Mexico), and their statistical relationships with 500 mb circulation

open access: yesGeofísica Internacional, 1994
Se aplican modelos de regresión lineal bivariada para estudiar la relación entre vientos locales y características de la circulación a 500mb. Los resultados indican que ni la dirección ni la rapidez del viento a 500 mb influyen significativamente en la ...
A. Tejeda-Martinez   +2 more
doaj   +1 more source

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty   +5 more
wiley   +1 more source

Regresión lineal ortogonal

open access: yes, 2021
This article presents a linear regression method that minimizes the residual error for a set of points xi, yi with i = 1, 2, ..., N, understood this error as the minimum distance from the point to the regression line. Furthermore, this method is compared
Recio López, José Manuel
core  

La Multicolinealidad en modelos de Regresión Lineal Múltiple

open access: yesRevista Ciencias Técnicas Agropecuarias, 2012
En este trabajo se aborda la problemática de la Multicolinealidad entre las variables regresoras en el Modelo de Regresión Lineal Múltiple. Diversas son los ambientes en las ciencias agrícolas donde esta dificultad puede presentarse. En este trabajo para
Juan del Valle Moreno   +1 more
doaj  

Adopting an Integrated Strategy in Local Policy Design: Agenda Content Diversity, Policy Capacities, and Policy Feedback Effects in Urban Policies as Multi‐Level Policy Mixes: The Urban Dimension of the European Union Cohesion Policy in Spain (1994–2020)

open access: yesEuropean Policy Analysis, Volume 12, Issue 1, Winter 2026.
ABSTRACT Policy integration is seen as an appropriate strategy to address urban problems and promote sustainable urban development objectives. The European Union (EU) has been including this strategy as an essential aspect of its urban initiatives since the 1990s.
María José Dorado‐Rubín   +2 more
wiley   +1 more source

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