Search results for "Heterogeneity."

Integración de la genómica en la modelización de los tumores neuroblásticos = Integration of genomics in neuroblastic tumors modeling

2015

*Introducción: El neuroblastoma es un tumor maligno embrionario del sistema nervioso simpático con una gran heterogeneidad en la presentación clínica, morfológica y genética y en otras características biológicas. La estratificación de grupos de riesgo pretratamiento se basa en los siguientes factores: edad, estadio, histopatológica del tumor, estado del oncogén MYCN, integridad del brazo cromosómico 11q y ploidía. Por otra parte, los cambios numéricos y estructurales detectados en el perfil genético se han incluido recientemente en la estratificación terapéutica de los pacientes con bajo riesgo a recaer o morir. El amplio espectro clínico de la enfermedad va desde pacientes con neuroblastom…

Opetusviestintä heterogeenisen kolmannen luokan ryhmällä

2012

Tämän tutkimuksen tarkoituksena oli selvittää, miten opettaja antoiinstruktion ja palautteen verbaalista ja nonverbaalista viestintää käyttäen heterogeenisen kolmannen luokan liikuntatunneilla sekä miten hän opetusviestinnässään huomioi oppilaiden yksilöllisyyden ja ryhmässä ilmenevän häiriökäyttäytymisen. Lisäksi tutkimuksessa selvitettiin, miten opettajan käyttämä opetusviestintä näyttäytyi oppilaiden toiminnassa liikuntatunneilla. Tutkimus toteutettiin laadullisena tapaustutkimuksena naisopettajan opettamassa 28 oppilaan (17 tyttöä, 11 poikaa) kolmannen luokan liikuntaryhmässä. Oppilasryhmä oli liikunnallisesti, oppimisvalmiuksiltaan sekä sosiaalisilta taidoiltaan heterogeeninen. Aineist…

Deep and Proximate Determinants of the World Income Distribution

2019

This paper studies the deep and proximate determinants of the evolution of the cross-country distribution of GDP per worker in the period 1960–2008 by a novel method based on an information criterion. We find that countries of our sample follow three distinctive growth regimes identified by two deep determinants, namely life expectancy at birth in 1960 and the share of Catholics in 1965, and that each regime is characterized by non-linearities. Growth regimes appear to be the main cause of the increased inequality and polarization, while technological catch-up, proxied by the initial level of GDP per worker, acts in the opposite direction. Finally, human capital marginally reduces polarizat…

Determinants of current account balances

2011

Religious tourism and subjective well being: an empirical analysis in hajj pilgrimage

2018

Abstract This study entitled “Religious Tourism and Subjective Well-Being (SWB): An Empirical Analysis in Hajj Pilgrimage” investigated the influence of religious tourism on subjective well-being (SWB) in the case of Hajj pilgrims. The primary aim of the study was to investigate the geographic, demographic and socio-economic factors that may have considerable effects on the Hajj pilgrims’ well-being and life satisfaction. The study is conducted through an analytical methodology in which a sheer quantitative method was used involving an extensive questionnaire administered to a pool of 500 pilgrims from three continents, namely Asia, Africa and Europe in addition to pilgrims from the Gulf Co…

The role of regional competitiveness in shaping the heterogeneous impact of the Great Recession

2020

This paper assesses the employment resilience of 202 European regions to the Great Recession by investigating the role of regional competitiveness. By using the regional shift component derived from a multiple bases shift–share analysis of employment change as a measure of regional endogenous employment growth, we show that pre‐crisis regional competitiveness determinants are associated with positive performances during the crisis period. However, the variables considered explain well the different vulnerability of the economies, but less convincingly the ability to recover. Taking into account the spatial interactions among regions, results are confirmed and allow us to identify spillover …

Connecting others: Does a tertius iungens orientation shape the relationship between research networks and innovation?

2021

Research on social networks and innovation emphasizes that individuals spanning structural holes and crossing institutional boundaries have more opportunities for knowledge recombination and innovation involvement. However, transforming the potential knowledge and resources available through personal networks to attain innovation can be difficult for the focal individual. Using an ego-network approach, this study examines whether and to what extent an individual strategic orientation to cooperation (i.e. tertius iungens) contributes to strengthening the relation between two personal network properties (structural and institutional separation) and involvement in innovation. Our analysis is c…

Heterogeneity versus Homogeneity in Schools: A Review of the Educational Value of Classroom Interaction

2020

The degree of homogeneity and heterogeneity among schools affects the comprehensiveness and inclusiveness of the school system and the type and scope of classroom interaction. Since the beginning of the 1980s, interest has gradually increased in the effects of homogeneity and heterogeneity of schools on classroom interactions

Hétérogénéité spatiale : principes et méthodes

2004

Spatial Heterogeneity : Principles and Methods This article has a dual purpose . First , it describes the main econometric specifications which can be used to represent spatial heterogeneity , reflected in an instability of parameters in space and / or a heteroscedasticity of error terms . Only the specifications valid in cross-section are examined . Second , it explains the links between spatial heterogeneity and autocorrelation , the other major feature of localised data , defined by the absence of independence between geographical observations . In particular , we look at the extent to which traditional tests of heteroscedasticity or instability need to be amended to take account of spat…

Management diversification increases habitat availability for multiple biodiversity indicator species in production forests

2022

Context Forest biodiversity is closely linked to habitat heterogeneity, while forestry actions often cause habitat homogenization. Alternative approaches to even-aged management were developed to restore habitat heterogeneity at the stand level, but how their application could promote habitat diversity at landscape scale remains uncertain. Objectives We tested the potential benefit of diversifying management regimes to increase landscape-level heterogeneity. We hypothesize that different styles of forest management would create a diverse mosaic of forest habitats that would in turn benefit species with various habitat requirements. Methods Forest stands were simulated under business-as-usua…