Search results for "Linea"
showing 10 items of 7724 documents
The Large Hadron–Electron Collider at the HL-LHC
2021
The Large Hadron-Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron-proton and proton-proton operations. This report represents an update to the LHeC's conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LH…
Demo 89. Acelerador magnético o de Gauss
2013
Objetivo: Entender un fenómeno de aparente no conservación de la energía y momento lineal. Profundizar en el concepto de energía de ligadura y energía interna y su relación con la energía cinética.
Orgaaniset ja metallo-orgaaniset epälineaariset optiset materiaalit
2017
Tässä tutkielmassa on perehdytty kirjallisuudessa raportoituihin orgaanisiin ja metallo-orgaanisiin epälineaarisiin optisiin (NLO) materiaaleihin sekä tutkittu mahdollisuutta valmistaa niitä yksinkertaisista orgaanisista molekyyleistä. Työn kirjallisessa osassa luodaan lyhyt katsaus NLO-teoriaan sekä käydään läpi orgaanisten ja metallo-orgaanisten NLO-yhdisteiden lisäksi erilaisia toisen harmonisen säteilyn (SHG) mittaustekniikoita sekä erilaisia kiteytystekniikoita. Kokeellisessa osuudessa on valmistettu polaarisista molekyyleistä heikoilla vuorovaikutuksilla sitoutuneita yhdisteitä, joista osalla on havaittu olevan SHG-ominaisuuksia.
Item Response Trees: a recommended method for analyzing categorical data in behavioral studies
2015
Behavioral data are notable for presenting challenges to their statistical analysis, often due to the difficulties in measuring behavior on a quantitative scale. Instead, a range of qualitative alternative responses is recorded. These can often be understood as the outcome of a sequence of binary decisions. For example, faced by a predator, an individual may decide to flee or stay. If it stays, it may decide to freeze or display a threat and if it displays a threat, it may choose from several alternative forms of display. Here we argue that instead of being analyzed using traditional nonparametric statistics or a series of separate analyses split by response categories, this kind of data ca…
Comparing the Climatic and Landscape Risk Factors for Lyme Disease Cases in the Upper Midwest and Northeast United States
2020
Lyme disease, recognized as one of the most important vector-borne diseases worldwide, has been increasing in incidence and spatial extend in United States. In the Northeast and Upper Midwest, Lyme disease is transmitted by Ixodes scapularis. Currently, many studies have been conducted to identify factors influencing Lyme disease risk in the Northeast, however, relatively few studies focused on the Upper Midwest. In this study, we explored and compared the climatic and landscape factors that shape the spatial patterns of human Lyme cases in these two regions, using the generalized linear mixed models. Our results showed that climatic variables generally had opposite correlations with Lyme d…
A posteriori error identities for nonlinear variational problems
2015
A posteriori error estimation methods are usually developed in the context of upper and lower bounds of errors. In this paper, we are concerned with a posteriori analysis in terms of identities, i.e., we deduce error relations, which holds as equalities. We discuss a general form of error identities for a wide class of convex variational problems. The left hand sides of these identities can be considered as certain measures of errors (expressed in terms of primal/dual solutions and respective approximations) while the right hand sides contain only known approximations. Finally, we consider several examples and show that in some simple cases these identities lead to generalized forms of the …
Estimates for the Differences of Certain Positive Linear Operators
2020
The present paper deals with estimates for differences of certain positive linear operators defined on bounded or unbounded intervals. Our approach involves Baskakov type operators, the kth order Kantorovich modification of the Baskakov operators, the discrete operators associated with Baskakov operators, Meyer&ndash
Strategic and motivational factors as predictors of pre-service primary teachers's success in problem solving
2014
En este trabajo se presenta una investigación descriptiva que muestra las relaciones entre cinco factores motivacionales y estratégicos (planificación, estrategias cognitivas, autocontrol, esfuerzo y autoeficacia) y el rendimiento en la resolución de problemas. Se administró a 66 maestras y maestros de primaria en formación un cuadernillo con dos problemas (problema 1 y problema 2) y el test de O'Neil y Schacter. Los resultados de los análisis de regresión múltiple ponen de manifiesto que: a) planificación, esfuerzo y autoeficacia son predictores significativos de las puntuaciones de las puntuaciones del problema de estructura simple (problema 1); b) esfuerzo, autoeficacia y estrategias cog…
La competencia digital en la formación inicial docente : percepción de los estudiantes de Magisterio de la Universidad de Valencia
2020
espanolLa formacion inicial de los docentes resulta un aspecto fundamental para la mejora de los sistemas educativos. En esta linea, este estudio pretende conocer la percepcion de los futuros maestros en relacion a la importancia de las competencias basicas en su formacion y, de forma especifica, su concepcion sobre la competencia digital, su utilidad y su percepcion de autoeficacia. La informacion de la muestra, compuesta por 104 estudiantes de los Grados de Maestro/a en Educacion Infantil y Primaria de la Universitat de Valencia, ha sido recogida a traves de un instrumento disenado ad hoc para la investigacion. Los resultados muestran que los estudiantes perciben como competencias fundame…
Recensione di: M. Pavanello, “Il segreto degli antenati. Un etnografo nel cuore del Ghana”
2008
Recensione di: M. Pavanello, “Il segreto degli antenati. Un etnografo nel cuore del Ghana”