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Search Results: 1 - 10 of 22 matches for " Selfa "
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Recensiones bibliográficas
Selfa, Jesús
Graellsia , 2008,
Abstract:
Al voltant de la relació epistolar entre Joan Coromines i Joan Sales: un recull d’antroponímia i toponímia de Vallclara (1954) [On the epistolary relationship between Joan Coromines and Joan Sales: a collection of anthroponyms and toponyms from Vallclara (1954)]
Selfa Sastre, Moisés
Zeitschrift für Katalanistik , 2012,
Abstract: The epistolary relationship between Joan Coromines (Barcelona, 1905 – Pineda de Mar, 1997) and Joan Sales (Barcelona, 1912–1983) documents how Sales actively collaborated in the collection of toponymic materials for the "Onomasticon Cataloniae" in municipalities and parishes of the Camp de Tarragona, Muntanyes de Prades and the Segarra. Joan Sales reported to Coromines his routes and the difficulties that he encountered in these areas. A result of the surveys carried out in these sites is the collection of Vallclara (Tarragona) presented in our work.
Barriers and Opportunities for Sustainable Food Systems in Northeastern Kansas
Hikaru Hanawa Peterson,Theresa Selfa,Rhonda Janke
Sustainability , 2010, DOI: 10.3390/su2010232
Abstract: Survey responses of producers and institutional buyers in northeastern Kansas (United States) were analyzed to understand barriers and opportunities for sustainable food systems in the region where their emergence has been limited. Producers and buyers identified barriers previously noted regarding mismatches of available quantities and prices. Producers’ enthusiasm to supply locally exceeded buyers’ interest to source locally. Transportation was identified as one of the major concerns by producers, and their responses to choice tasks revealed producers’ preferences to sell locally while pricing their products to secure sales revenue and to cover their logistics expenses at least partially.
Introduction to the Rural Development Special Issue
László J. Kulcsár,Theresa Selfa
Online Journal of Rural Research & Policy , 2009, DOI: 10.4148/ojrrp.v4i1.60
Abstract: The Online Journal of Rural Research and Policy has taken the initiative to publish a Rural Development Special Issue. This initiative corresponds with the interdisciplinary perspective of rural studies and is reflected in the collection of papers. Each paper addresses one or more central themes of rural studies, many of which are interrelated.
Revisió dels odonats valencians de la col·lecció d’artròpodes del Museu de Ciències Naturals de Barcelona
Fontana-Bria, L.,Selfa, J.
Arxius de Miscel-lània Zoològica , 2012,
Abstract: Revision of valencian dragonflies in the arthropod collection at the Museu de Ciències Naturals de BarcelonaThe current work shows the species of valencian dragonflies preserved in the arthropod collection at the Museu de Ciències Naturals de Barcelona (Spain). A total of 33 specimens have been found belonging to 12 species, which represent the 18% of the known species in the Valencian Country.
On simultaneous arithmetic progressions on elliptic curves
I. Garcia-Selfa,J. M. Tornero
Mathematics , 2006,
Abstract: In this paper we study elliptic curves which have a number of points whose coordinates are in arithmetic progression. We first motivate this diophantine problem, prove some results, provide a number of interesting examples and, finally point out open questions which focus on the most interesting aspects of the problem for us.
Thue equations and torsion groups of elliptic curves
Irene Garcia-Selfa,Jose M. Tornero
Mathematics , 2007,
Abstract: A new characterization of rational torsion subgroups of elliptic curves is found, for points of order greater than 4, through the existence of solution for systems of Thue equations.
On the discriminant of elliptic curves with non-trivial torsion
I. Garcia-Selfa,Jose M. Tornero
Mathematics , 2007,
Abstract: For those elliptic curves defined over the rational with non--trivial torsion subgroup, we find a tight relationship between the torsion subgroup itself and a Galois group naturally arising from the curve.
Searching for simultaneous arithmetic progressions on elliptic curves
Irene Garcia-Selfa,Jose M. Tornero
Mathematics , 2007,
Abstract: We look for elliptic curves featuring rational points whose coordinates form two arithmetic progressions, one for each coordinate. A constructive method for creating such curves is shown, for lengths up to 5.
A complete diophantine characterization of the rational torsion of an elliptic curve
Irene Garcia-Selfa,Jose M. Tornero
Mathematics , 2007,
Abstract: We give a complete characterization for the rational torsion of an elliptic curve in terms of the (non-)existence of integral solutions of a system of diophantine equations.
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