Search results for "DIMENSION"
showing 10 items of 2766 documents
Testing a theoretically-based overland flow resistance law by Emmett’s database
2021
Abstract The main aim of this paper was to test a recently theoretically deduced flow resistance equation, based on a power-velocity profile, using a wide database of available measurements carried out in laboratory and field experimental runs with overland flow under simulated rainfall. In comparison with previous calibrations and validations of this theoretically deduced flow resistance equation, the used database by Emmett is characterized by a wide range of rainfall intensities (from 79.2 to 303.5 mm h−1 for laboratory runs and from 178.3 to 215.9 mm h−1 for field investigations) and bed slopes (from 0.33 to 17% for laboratory runs and from 2.9 to 33.2% for field investigations). For th…
Study of dimensionality using classic factor analysis and full information factor analysis: analysis of primary (5th and 6th degrees) and compulsory …
2008
The aim of this paper is to analyze the dimensional structure of a set of mathematical achievement tests used to assess the academic achievement in the Community of Madrid during 2005-06 and 2006-07 years and in three cohorts corresponding to the following academic degrees: 5th-6th of primary education, 1st-2nd and 3-4th of compulsory secondary education (ESO). The results coming from classical factor analysis and full information factor analysis are compared. Therefore a longitudinal study is performed in order to test whether such structure remains constant along time. The results confirm that most of the tests are mostly unidimensional structures. Meanwhile, it was proven that as the com…
Evolution of dental arches characteristics in two age groups
2005
Introducción: Se comparan las características dimensionales de las arcadas dentarias entre dos grupos de edades diferentes, adolescentes y adultos jóvenes, para analizar las variaciones asociadas a la edad, sexo y a la influencia del tratamiento ortodóncico. Material y método: Se utilizaron dos muestras: 88 pares de modelos de escayola de adolescentes (edad media 14,05 años) y 65 de adultos (edad media 22,15 años). Se usó un método digital para la medición de los diámetros mesiodistales de los dientes, distancias intercaninas e intermolares, longitudes de las arcadas y se obtuvo el apiñamiento dentario inferior. Para el análisis estadístico se agruparon las muestras de cada grupo de edad po…
Dimensioni di benessere tra le famiglie italiane. Un’analisi sui dati EU-SILC 2005
2009
Il presente lavoro, utilizzando le informazioni dell’indagine EU-SILC (European Statistics on Income and Living Conditions) del 2005 su 22.032 famiglie italiane, si pone come obiettivo l’analisi e la misura del benessere multidimensionale. Nel paragrafo 2 sono riportate le ipotesi teoriche, mentre nel paragrafo 3 è riportata l’analisi dei risultati e alcune considerazioni conclusive.
Dimensioni di personalità in soggetti obesi BED e NON-BED.
2012
Introduzione Pochi studi hanno esaminato la presenza di differenti dimensioni di personalità in soggetti obesi BED e non-BED (Peterson et al., 2010) e i risultati appaiono ancora poco chiari. Lo studio si propone di: a) confrontare le dimensioni di personalità in soggetti obesi BED e non-BED; b) approfondire l’associazione tra stili di personalità e comportamenti binge in relazione ad altre variabili sintomatiche. Metodo 143 soggetti adulti obesi non-BED e 60 soggetti obesi BED che hanno richiesto un trattamento presso un sevizio pubblico sui disturbi alimentari, hanno compilato i seguenti strumenti di assessment: MCMI-III (Millon, 1997), BES (Gormally et al, 1982), OQ-45 (Lambert et al., 2…
Analytical prediction of ultimate moment and curvature of RC rectangular sections in compression
2013
This paper presents closed form expressions linking the ultimate bearing capacity to the ultimate curvature of rectangular RC sections subjected to axial load and bending moment acting in one of the two symmetry planes of the section. With respect to possible simplified formulations the following effects are also considered: confinement of the concrete, hardening of the longitudinal reinforcement, and presence of reinforcing bars distributed orthogonally to the neutral axis. The formulation is proposed in dimensional terms after a preliminary definition of the geometrical and mechanical parameters governing the structural response of the class of sections considered. The analytical expressi…
Development and validation of the team learning questionnaire
2008
Nowadays the organizational scenario is changing in several aspects that affect organization commitment. Team learning construct has emerged as a tool to deal with these changes and the dynamic nature of this situation. Although team learning has acquired importance in recent years, instruments to measure team learning should be developed. The aim of this paper is to develop and validate a team learning scale, the Team Learning Questionnaire, attending to four dimensions of team learning: Continued Improvement Seeking, Dialogue Promotion and Open Communication, Collaborative Learning, and Strategic and Proactive Leadership that Promote Learning. Results provide evidence of the reliability a…
Uniform rectifiability implies Varopoulos extensions
2020
We construct extensions of Varopolous type for functions $f \in \text{BMO}(E)$, for any uniformly rectifiable set $E$ of codimension one. More precisely, let $\Omega \subset \mathbb{R}^{n+1}$ be an open set satisfying the corkscrew condition, with an $n$-dimensional uniformly rectifiable boundary $\partial \Omega$, and let $\sigma := \mathcal{H}^n\lfloor_{\partial \Omega}$ denote the surface measure on $\partial \Omega$. We show that if $f \in \text{BMO}(\partial \Omega,d\sigma)$ with compact support on $\partial \Omega$, then there exists a smooth function $V$ in $\Omega$ such that $|\nabla V(Y)| \, dY$ is a Carleson measure with Carleson norm controlled by the BMO norm of $f$, and such th…
Connected components in the space of composition operators onH∞ functions of many variables
2003
LetE be a complex Banach space with open unit ballBe. The structure of the space of composition operators on the Banach algebra H∞, of bounded analytic functions onBe with the uniform topology, is studied. We prove that the composition operators arising from mappings whose range lies strictly insideBe form a path connected component. WhenE is a Hilbert space or aCo(X)- space, the path connected components are shown to be the open balls of radius 2.
Selmer's Multiplicative Algorithm
2011
Abstract.The behavior of the multiplicative acceleration of Selmer's algorithm is widely unknown and no general result on convergence has been detected yet. Solely for its 2-dimensional, periodic expansions, there exist some results on convergence and approximation due to Fritz Schweiger. In this paper we show that periodic expansions of any dimension do in fact converge and that the coordinates of the limit points are rational functions of the largest eigenvalue of the periodicity matrix.