Search results for "Variables"

Seasonal precipitation interpolation at the Valencia region with multivariate methods using geographic and topographic information

2009

The spatial pattern of precipitation is a complex variable that strongly depends on other geographic and topographic factors. As precipitation is usually known only at certain locations, interpolation procedures are needed in order to predict this variable in other regions. The use of multivariate interpolation methods is usually preferred, as secondary variables—generally derived using GIS tools—correlated with precipitation can be included. In this paper, a comparative study on different univariate and multivariate interpolation methodologies is presented. Our study area is centred in the region of Valencia, located to the eastern Spanish Mediterranean coast. The followed methodology can …

Emotions and visitors’ satisfaction at a museum

2014

Purpose – This research aims to investigate whether emotions can be considered as a suitable variable to segment visitors at a museum. Furthermore, it seeks to analyse whether emotions influence visitor satisfaction and whether this depends on objective variables (such as age, gender and level of education) or not. Design/methodology/approach – A structured questionnaire was developed and data were collected at the National Museum of Archaeology “G.A. Sanna” in Sardinia (Italy) via 410 face-to-face interviews. Hierarchical and non-hierarchical cluster analyses and a series of chi-squared tests were run for the purpose of the study. Findings – Two segments were identified. The cluster with …

Women’s empowerment and child mortality: the case of Bangladesh

2018

The development of fundamental motor skills of four‐ to five‐year‐old preschool children and the effects of a preschool physical education curriculum

2011

Altogether 38 girls and 46 boys aged four to five years were studied to analyse the linear and non‐linear development of fundamental motor skills. The children were grouped into one experimental and one control group to study the effects of an eight‐month preschool physical education curriculum. In the course of one year, the balance skills of the girls, the running speed of the boys and the standing broad‐jump and manipulative skills of both genders progressed linearly according to the children's age. Two weekly 45‐minute physical education lessons instructed by preschool teachers promoted the linear development of the girls' standing broad‐jump and non‐linear development of the boys' runn…

Attracteurs et bifurcations en dynamique holomorphe

2019

Differential attributes of phytoplankton across the trophic gradient: a conceptual landscape with gaps

1998

I provide a conceptual landscape of attributes of phytoplankton related to trophic gradients, by reviewing 69 papers and books on eutrophication, with special reference to the ecology of the phytoplankton. Forty-eight ecological variables such as total phosphorus and Chl-a, are used, each related to the trophic gradient measured. They are subdivided in structural features of the phytoplankton, functional or dynamic features, and other relevant properties of the plankton community. Only twelve of the forty-eight variables are statistically related to trophic gradient. In most cases, variability across a trophic gradient is only nominally described. Less attention is given to functional, stru…

Essential norm estimates for composition operators on BMOA

2013

Abstract We provide two function-theoretic estimates for the essential norm of a composition operator C φ acting on the space BMOA; one in terms of the n-th power φ n of the symbol φ and one which involves the Nevanlinna counting function. We also show that if the symbol φ is univalent, then the essential norm of C φ is comparable to its essential norm on the Bloch space.

Mechanically-based approach to non-local elasticity: Variational principles

2010

Abstract The mechanically-based approach to non-local elastic continuum, will be captured through variational calculus, based on the assumptions that non-adjacent elements of the solid may exchange central body forces, monotonically decreasing with their interdistance, depending on the relative displacement, and on the volume products. Such a mechanical model is investigated introducing primarily the dual state variables by means of the virtual work principle. The constitutive relations between dual variables are introduced defining a proper, convex, potential energy. It is proved that the solution of the elastic problem corresponds to a global minimum of the potential energy functional. Mo…

Relationship between score and coaches’ verbal behavior

2013

Calpe V, Guzman J, Grijalbo C. Relationship between score and coaches’ verbal behaviour. J. Hum. Sport Exerc. Vol. 8, No. Proc3, pp. S728-S737, 2013. The way the coach act the most during the development of the game is meanwhile verbal behaviour directed to their players (Moreno et al., 2000), being it influenced by his own cognitions, motivations, and emotions, together with players behaviours and playing situation (Borrie, 1996; Smoll & Smith, 1989). The aim of this study was to analyse the relationship between a situational variable, the score during the game, and verbal behaviour of handball coaches in competitive situation. To do this, five coaches were analysed in five games. Two vari…

Hyperspectral UAV-Imagery and photogrammetric canopy height model in estimating forest stand variables

2017

Remote sensing using unmanned aerial vehicle (UAV) -borne sensors is currently a highly interesting approach for the estimation of forest characteristics. 3D remote sensing data from airborne laser scanning or digital stereo photogrammetry enable highly accurate estimation of forest variables related to the volume of growing stock and dimension of the trees, whereas recognition of tree species dominance and proportion of different tree species has been a major complication in remote sensing-based estimation of stand variables. In this study the use of UAV-borne hyperspectral imagery was examined in combination with a high-resolution photogrammetric canopy height model in estimating forest v…