Search results for "AREs"
showing 10 items of 1717 documents
The λ-Error Order in Multivariate Interpolation
2005
The aim of this article is to introduce and to study a generalization of the error order of interpolation, named λ – error order of interpolation. This generalization makes possible a deeper analysis of the error in the interpolation process. We derived the general form of the λ – error order of interpolation and then we applied it for many choices of the functional λ.
Relations between structure and estimators in networks of dynamical systems
2011
The article main focus is on the identification of a graphical model from time series data associated with different interconnected entities. The time series are modeled as realizations of stochastic processes (representing nodes of a graph) linked together via transfer functions (representing the edges of the graph). Both the cases of non-causal and causal links are considered. By using only the measurements of the node outputs and without assuming any prior knowledge of the network topology, a method is provided to estimate the graph connectivity. In particular, it is proven that the method determines links to be present only between a node and its “kins”, where kins of a node consist of …
DECLINE IN US OUTPUT GROWTH VOLATILITY: A WAVELET ANALYSIS*
2012
The aim of the paper is to determine (endogenously) whether the volatility of the US output growth rate has changed since the late 1940s. By applying the discrete wavelet transform to the annualized quarter-to-quarter output growth series, we test the homogeneity of the variance on a scale-by-scale basis. A version of the Normalized and Centered Cumulative Sum of Squares test, adapted to wavelets, leads us to reject the null of constant variance in the two levels of decomposition of the highest resolution and to locate a single break in 1982. The economic implications are explored.
Detecting tri‐stability of 3D models with complex attractors via meshfree reconstruction of invariant manifolds of saddle points
2018
In mathematical modeling it is often required the analysis of the vector field topology in order to predict the evolution of the variables involved. When a dynamical system is multi-stable the trajectories approach different stable states, depending on the initialmconditions. The aim of this work is the detection of the invariant manifolds of thesaddle points to analyze the boundaries of the basins of attraction. Once that a sufficient number of separatrix points is found a Moving Least Squares meshfree method is involved to reconstruct the separatrix manifolds. Numerical results are presented to assess the method referring to tri-stable models with complex attractors such as limit cycles o…
Determinants affecting consumers' attention to fish eco-labels in purchase decisions: a cross-country study
2022
PurposeThe purpose of this study was to investigate the role of consumer altruism and other socio-cultural factors in predicting how much attention consumers pay to seafood eco-labels.Design/methodology/approachThe empirical investigation was carried out by administering an online questionnaire to a sample of Italian and Spanish people from December 2019 to April 2020. After carrying out the principal component analysis procedure, the work made use of an ordinal logistic regression.FindingsBoth Italian and Spanish consumers with an altruistic attitude, who feel that food produced in a sustainable way can protect the environment and workers, appear more likely to take an eco-label into accou…
Aesthetic factors determining quality and comfort in childhood classroom
2016
This study analyses how school age children experience their educational environment. The objective is to collect the determining factors of aesthetic quality and comfort at school. A pluralistic methodology allows: gather both quantitative and qualitative data using photographic elicitation, and show the responses on an artistic way. Eighty-six children participate on this research; they are from 3 until 5 years old, and belong to rural and urban schools of Alicante. The results determine which places of school are more comfortable, pleasant and enjoyable in Early Childhood Education. Pupils are able to examine in a critically form their everyday educational activities and express their op…
Advanced services and city globalization on the Eastern fringe of Europe
2007
Capital cities in East Central and Eastern European Countries (ECEEC) are changing rapidly. Since the 1990s, the ECEEC capitals have faced the double challenge of the market (the transition process) and of integration in the world economy (the globalization process), which supposes a sufficient development of coordination functions and thus of advanced services concentrated in these cities (city globalization). Their capacity to join the network of global cities is evaluated on the basis of their relative specializations in advanced services and their connections with the rest of the world. The comparative analysis leads to contrasted globalization perspectives. Thus, Budapest, Prague and W…
Coefficient shifts in geographical ecology: an empirical evaluation of spatial and non-spatial regression
2009
12 páginas, 4 figuras, 3 tablas.
The Real Effects of Bank Branch Deregulation at Various Stages of Economic Development: The European Experience
2011
This paper provides evidence on the links between financial deregulation and economic performance in a European context. Specifically, we study the relaxation of bank branching restrictions in Spain which triggered off a remarkable inter-regional expansion of savings banks which was coincidental with an unprecedented period of sustained growth. Although related questions have been largely investigated for the US, the European experiences remain largely unexplored. An additional contribution is the use of quantile regression techniques which, unlike traditional OLS regression analysis, do not focus on the “average effect for the average province”. This change of focus helps to overcome the d…
Care poverty : unmet care needs in a Nordic welfare state
2019
This article introduces the concept of care poverty, defined as inadequate coverage of care needs resulting from an interplay between individual and societal factors, and examines its level and predictors among the 75+ population in Finland. The data come from a survey conducted in 2010 and 2015. Despite the universalistic goals of the Finnish care system, 26 percent of respondents with limitations in daily activities faced care poverty with regard to instrumental activities of daily living; the activities of daily living care poverty rate was 17 percent. Concerning instrumental activities of daily living, care poverty was associated with income level, health status and living arrangements,…