Papers by Carlos Álvarez López
La pretensión de los autores se centra en realizar un estudio de las actuaciones de concentración... more La pretensión de los autores se centra en realizar un estudio de las actuaciones de concentración parcelaria en diferentes países de la Unión Europea, donde esta actuación tiene relevancia. Este estudio se concreta en la descripción, para cada uno de los países considerados, de sus características más significativas, seguido de los antecedentes históricos, un resumen de las realizaciones, la especificación de los objetivos a alcanzar con la actuación, los procedimientos que se siguen, y cómo se realiza la valoración de tierras. La experiencia acumulada por estos países constituye un elemento de referencia que nos debe hacer meditar sobre lo que es la concentración parcelaria y su posible utilidad de cara al futuro, en las diferentes Comunidades Autónomas del Estado Español. La evolución observada en los países considerados modificando objetivos de organización del parcelario agrícola, con unos intereses únicamente de mejora de las productividades de las explotaciones agrícolas, a ob...
Recursos Rurais, 2018
In Galicia and in the rest of Spain, dairy barns are going through a transition to implement the ... more In Galicia and in the rest of Spain, dairy barns are going through a transition to implement the latest technologies, improve labour efficiency, and increase size. Barns with capacity for more cows are required due to the new market demands. Such barns must be perfectly defined, so that the construction of new buildings may entail reduced investment and operating costs. A wrong decision in the design phase can lead to serious financial trouble, even to the extent of making the farm economically non-viable.This study focuses in determining the factors that most strongly affect the construction costs of dairy housing, based on the most common barn designs in Galicia. Such factors are determined by implementing different indices that analyse the shape of the building.The implemented indices concern the design of the building –mainly its shape– and consider in all cases the relation of the design to the total cost and cost per item of the different constructions. Among these indices, th...
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Revista espanola de salud publica, 2019
OBJECTIVE Of the 607 fatal work accidents produced in Spain in 2016, 37.9% were due to ischemic h... more OBJECTIVE Of the 607 fatal work accidents produced in Spain in 2016, 37.9% were due to ischemic heart disease and cerebral stroke. Working conditions such as night work, noise or respiratory pollutants are associated with higher cardiovascular incidence. The objective of the present study was to assess whether health surveillance in workers exposed to these conditions should include the assessment of cardiovascular risk. METHODS Cross-sectional study of 680 workers in a public administration. The working conditions were obtained from the business risk assessment and the personal data that allowed the cardiovascular risk assessment, from the medical examination carried out in 2015. For the statistical analysis, Chi-square test (prevalence comparison) and Student's T test or Mann Whitney U test (means comparison), were applied. RESULTS Exposed was 30.1%, showing significant differences by sex (37% men, 11.9% women, p<0.05). According to REGICOR, 13.2% of those exposed were part...
Selected Proceedings from the 12th International Congress on Project Engineering Zaragoza July 2008 2009 Isbn 978 84 613 3557 2 Pags 15 26, 2009
Based on the data from 2007 Analysis of the European Dairy Farmers, the state of labour productiv... more Based on the data from 2007 Analysis of the European Dairy Farmers, the state of labour productivity (efficiency), measured in kilograms of milk per hour of work, are in Spain at 120, while the average for the countries of the Old EU Countries a little more than 180. These values are even worst in the Autonomous Region of Galicia. In this paper we describe the critical factors that limit efficiency taking into account three differential points with regard to the transactions carried out by labour on farms, food, milking and cleaning in 11 selected dairies with different characteristics. It should be noted that regardless of measuring time employees in the activities it has been determined the adequacy of the same, in order to obtain objective results. As overall results, we can conclude that food is more efficient when done through automated means and less efficient farms are those that perform grazing. Milking reaches higher values in the presence of waiting rooms. While cleaning is more appropriate in the exploitations with emparrillado beds and rubber.
Perspectivas Rurales Nueva Epoca, 2012
fabricantes artesanales (más de 250) y en menor escala por semi-industriales (12, al momento de r... more fabricantes artesanales (más de 250) y en menor escala por semi-industriales (12, al momento de realizar el estudio), que en su conjunto producen un volumen total aproximado de 90,000 kilogramos por semana, en la época de mayor producción, siendo la principal actividad económica local.
Cisic 2003 Madrid Majadahonda 7 8 Y 9 De Mayo De 2003 Vol 1 2003 Isbn 84 481 3966 6 Pags 338 347, 2003
Spanish Journal of Agricultural Research, 2011
In this paper, the performance of a manual GPS guidance system to assist farming operations is ev... more In this paper, the performance of a manual GPS guidance system to assist farming operations is evaluated. The distribution of granular fertilizer was simulated in order to discretize areas with excessive application of fertilizers and areas with fertilizer application rates below the intended rate. The path of travel followed by a tractor with the manual GPS guidance system was analysed and compared with a commercial parallel tracking system and without guidance assistance. In addition, the analysis evaluated how the use of manual GPS guidance systems improves the performance of field operations that require large distances between passes. Under the experimental conditions used, the best results were obtained using a commercial parallel tracking system but, for our purposes, small differences were observed between the results obtained with the commercial system and the results obtained with the developed manual GPS guidance system, getting pass-to-pass average error values of 0.26 and 0.73 m, respectively. The results obtained with both systems were significantly better than the results obtained when no guidance assistance was used. In our trials, area with appropriate fertilizer rate was clearly increased when guidance assistance was used. Values of area with correct fertilizer rate applied ranged between 87% with commercial parallel tracking and 59% without guidance assistance. The use of the manual GPS guidance system presented in this paper has proved sufficient to obtain good results for mechanical fertilizer spreading.
Sustainable Forest Management - Current Research, 2012
Estudios Gerenciales, 2010
El articulo muestra, a través del análisis de libros, artículos científicos y algunos estudios ex... more El articulo muestra, a través del análisis de libros, artículos científicos y algunos estudios existentes, el estado del arte y la relación entre los sistemas de identificación (código de barras y radiofrecuencia) y la gestión de la cadena de suministro, en aplicaciones significativas a nivel mundial y de Colombia. Para ello, se compilan conceptos generales de los sistemas de identificación presentando sus definiciones, componentes de hardware/software, aplicaciones en la cadena de suministro y el uso que grandes, medianas y pequeñas empresas le otorgan. El estudio pone en evidencia la importancia que estas tecnologías tienen para mejorar el desempeño y la trazabilidad, simplificar operaciones, reducir costos y agilizar los flujos de información en la cadena de suministro.
Revista Española de Cardiología, 2013
Spanish journal of rural …, 2011
Información del artículo Criterios e indicadores de sostenibilidad para el desarrollo rural.
Cisic 2003 Madrid Majadahonda 7 8 Y 9 De Mayo De 2003 Vol 1 2003 Isbn 84 481 3966 6 Pags 444 450, 2003
Revista Digital Del Instituto Internacional De Costos, 2010
Revista Española de Cardiología (English Edition), 2013
Medicina Clínica, 2005
BACKGROUND AND OBJECTIVE: To review published studies on the prevalence of the main vascular risk... more BACKGROUND AND OBJECTIVE: To review published studies on the prevalence of the main vascular risk factors-hypertension, hypercholesterolemia, diabetes mellitus, obesity and tobacco smoking-in Spain, and to combine their results in an estimate for the Spanish ...
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Papers by Carlos Álvarez López