Enhanced Parallel Generation of Tree Structures for the Recognition of 3D Images

Segmentations of a digital object based on a connectivity criterion at n-xel or sub-n-xel level are useful tools in image topological analysis and recognition. Working with cell complex analogous of digital objects, an example of this kind of segmentation is that obtained from the combinatorial representation so called Homological Spanning Forest (HSF, for short) which, informally, classifies the cells of the complex as belonging to regions containing the maximal number of cells sharing the same homological (algebraic homology with coefficient in a field) information. We design here a parallel method for computing a HSF (using homology with coefficients in Z/2Z) of a 3D digital object. If this object is included in a 3D image of m1 × m2 × m3 voxels, its theoretical time complexity order is near O(log(m1 + m2 + m3)), under the assumption that a processing element is available for each voxel. A prototype implementation validating our results has been written and several synthetic, random and medical tridimensional images have been used for testing. The experiments allow us to assert that the number of iterations in which the homological information is found varies only to a small extent from the theoretical computational time.Ministerio de Economía y Competitividad MTM2016-81030-

Analysis of the Spanish Catches of White Hake (Urophycis tenuis) in NAFO Regulatory Area, 2000-2003

The Spanish fleet that operates in NAFO Regulatory Area has captured white hake in a regular way during the last years. Before 2002, the level of catches of this species has not been very high (300 tons per year) and these catches were part of the by-catch of the different fisheries that Spanish fleet carries out in NAFO Area (Greenland halibut, skates, redfish). Catches have been increased substantially in the last two years, being captured in the year 2003 more than 1 800 tons. The Spanish fishery directed to white hake began in the year 2002 and it is developed mainly in the Div. 3O among the depths 200-500 meters. The biggest catches are carried out during the third quarter, and more than 80% of the catches, in abundance and biomass, are mature

Description of the Spanish Pelagic Fishery of Oceanic Redfish (Sebastes mentella Travin) in the North Atlantic (2000-2004)

The period analyzed in this paper is 2000-2004. Data from the Spanish commercial fishery (hauls, positions, CPUE and length distributions) were recorded on board by scientific observers of the national sampling network. The effort data come from the Fisheries National Administration (SGPM). The Spanish pelagic redfish fishery in ICES areas XII and XIV and in the NAFO Div. 1F and 2J showed a significant seasonal pattern in terms of its geographical and depth distribution. The fishing season occurs mainly during the 2nd and 3rd quarter of every year. In the second quarter the fleet works in area XIV, between the Greenland and Iceland EEZs, in depths deeper than 500 m capturing fish of great size. Proportion of females in the catches is greater than the males. The catches length distributions present two modes that move along the time. In third quarter the fleet moves toward the south west to ICES Division XII and NAFO Div. 1F and 2J and depth of hauls is less than 500 m. The length distributions of the catches are smaller than those of the second quarter and show only one mode rather stable in time. Proportion of the males in the catches is bigger than the females. The yields in these Divisions are smaller than in Division XIV. The fishery in NAFO area 1F and 2J is quite similar to that one carry out in ICES Division XII, particularly in the characteristics of the hauls (depth, season) and in the catches (distributions of sizes, sex ratio, etc)

The Spanish Fishery (1998, 2000-2002) and the Spanish 3NO Survey (1995-2002) in Relation to the Skate Fishery in NAFO Divisions 3NO.

This paper analyses the data of the Spanish fishery (1998, 2000-2002) and the Spanish 3NO Survey (1995-2002) in relation to the Skate fishery in NAFO Div. 3NO. According to the distribution pattern of the fishing effort in 1998, 2000, 2001 and 2002, it may be concluded that the majority of the effort were performed in shallow waters of less than 100 m. and in the second half of the year. The species composition of catches show that thorny skate is the target specie and American plaice is the main bycatch species Other less important species in the by-catch are yellowtail flounder, witch flounder and cod. The percentage of SSB in the catches for yellowtail flounder is quite high and constant. For skate the values shows a increasing trend in biomass and abundance. For American plaice the values are very stables in all years excepting the last year where the percentage of abundance was rather low. Survey data shows that almost the 100% of the biomass and abundance of Yellowtail flounder was found in the stratum 0-91 m. For American plaice the percentage in the last years is more than 70%. For skate the values are very variable between years. Most of biomass and abundance of Witch flounder are outside of this stratum

Results of the 2004 Spanish Experimental Fishing in NAFO Subarea 1

An experimental fishing was carried out with three bottom trawlers commercial Spanish vessels from July to December of the year 2004 in the Subarea 1. The main objective of the experimental fishing was to search for cephalopods species concentrations inside the territorial waters of Greenland. During the experimental fishing a scientific observer stayed on board each vessel to collect effort data, catches and yields by haul and Division. The observers carried out length distribution samplings of the following species: Reinhardtius hippoglossoides, Pandalus borealis, Gadus morhua, Sebastes spp., Hippoglossoides platessoides and Macrourus berglax. Biological samplings of R. hippoglossoides, P. borealis, H. platessoides, G. morhua and M. berglax were also carried out. Otoliths of Greenland halibut (1 356) and Atlantic cod (739) were collected for age determination. Greenland halibut was the main species caught and the cephalopods, target species, have not been found in the experimental fishing

Results of the 2004 Spanish Experimental Fishing in NAFO Subarea 1

An experimental fishing was carried out with three bottom trawlers commercial Spanish vessels from July to December of the year 2004 in the Subarea 1. The main objective of the experimental fishing was to search for cephalopods species concentrations inside the territorial waters of Greenland. During the experimental fishing a scientific observer stayed on board each vessel to collect effort data, catches and yields by haul and Division. The observers carried out length distribution samplings of the following species: Reinhardtius hippoglossoides, Pandalus borealis, Gadus morhua, Sebastes spp., Hippoglossoides platessoides and Macrourus berglax. Biological samplings of R. hippoglossoides, P. borealis, H. platessoides, G. morhua and M. berglax were also carried out. Otoliths of Greenland halibut (1 356) and Atlantic cod (739) were collected for age determination. Greenland halibut was the main species caught and the cephalopods, target species, have not been found in the experimental fishing

Spanish Research Report for 2005

25 páginas, 23 tablasPeer reviewe

Alcohol and Drug Use by Professional Drivers in Spain

Abstract The self evaluation of health status, the presence of pathological processes and the consumption patterns of medicaments and alcohol in a sample of Spanish professional drivers is analyzed in this study. 13% of professional drivers claim to suffer a pathological process, while 12.75% say they are taking medicaments. 46% of professional drivers drink alcohol every week, with an average consumption of 16.8 ± 11.8 grams of pure alcohol per day, and 8.7% have a score of 8 or more points in the AUDIT test. These results show that the presence of pathological processes, the consumption of medicaments, of alcohol and its related problems is frequent in Spanish professional drivers. Introduction The use of alcohol, and to a lesser extent of medicinal drugs, is common in the population (1-4). Earlier studies have also shown frequent consumption of these substances among drivers. There is, however, little information regarding professional drivers, either in Spain or elsewhere

Spanish Research Report for 2002

26 páginas, 24 tablasPeer reviewe

Spanish Research Report for 2003

24 páginas, 22 tablasPeer reviewe