Modelling tax decentralisation and regional growth

The aim of this paper is to determine a theoretical linkage between tax decentralisation and regional growth. For this purpose a two fiscal tiers growth model is specified. First, working on Zou (1996) analytical framework, which account for the potential effects of intergovernmental policies on regional growth, a tax decentralisation process is brought in. Next its original model is expanded taking into account such process. It is shown that the effect of tax decentralisation on regional growth depends on the existing relationship between private and regional public capital productivities ratio and their stocks ratio square root. Finally a hypothesis for the Spanish economy is obtained. It will be checked empirically in subsequent work. Keywords: tax decentralisation; general equilibrium analysis; regional growth JEL classification: H70; O40; R13

The beauty of the mammalian vascular system

Beauty is a characteristic of objects that provides a perceptual experience of pleasure. In nature, aesthetic appreciation thereof has given rise to the mathematical search for good series (e.g. the Fibonacci series) and proportions (e.g. the Golden proportion) as important elements of beauty. In 1928 the mathematician George David Birkhoff introduced a formula for aesthetic measurement of an object. Birkhoff equation defines the aesthetic value as the amount of order divided by the complexity of the product. These two features can be measured easily in poetry, music, painting, architecture, etc. In the fine arts, it is the artist who manipulates both these features, but how does nature manage order and complexity in living organisms or their parts? Here we show how Birkhoff equation, applied to the mammalian vascular system of eight representative animals, results in new insights into the organization of the animal vascular system. We found that order and complexity are highly correlated in the mammalian vascular system (_R^2^_=0.9511). Accordingly, in nature both features are not independently managed in the manner of artists. We found significant differences among the Birkhoff aesthetic values in the mammalian arterial system, whereas no such differences exist in the venous system. We anticipate our approach to be useful in the study of morphogenesis and evolution of tree-like structures, employing the Birkhoff aesthetic value as a simple tool for conducting such studies

Measuring Object Rotation via Visuo-Tactile Segmentation of Grasping Region

When carrying out robotic manipulation tasks, objects occasionally fall as a result of the rotation caused by slippage. This can be prevented by obtaining tactile information that provides better knowledge on the physical properties of the grasping. In this paper, we estimate the rotation angle of a grasped object when slippage occurs. We implement a system made up of a neural network with which to segment the contact region and an algorithm with which to estimate the rotated angle of that region. This method is applied to DIGIT tactile sensors. Our system has additionally been trained and tested with our publicly available dataset which is, to the best of our knowledge, the first dataset related to tactile segmentation from non-synthetic images to appear in the literature, and with which we have attained results of 95% and 90% as regards Dice and IoU metrics in the worst scenario. Moreover, we have obtained a maximum error of ≈ 3° when testing with objects not previously seen by our system in 45 different lifts. This, therefore, proved that our approach is able to detect the slippage movement, thus providing a possible reaction that will prevent the object from falling.This work was supported by the Ministry of Science and Innovation of the Spanish Government through the research project PID2021-122685OB-I00 and by the University of Alicante through the grant UAFPU21-26

El Protomedicato navarro : itinerario de una investigación

En este trabajo se expone la metodología empleada en el estudio del Protomedicato navarro. Aprovechando la peculiar situación del reino de Navarra entre los siglos XV y XIX, durante los que mantuvo plena autonomía, se acometió el estudio del Protomedicato navarro a través de los fondos documentales de las demás instituciones administrativas y políticas del reino. Entre estas instituciones cabe destacar la Cofradía de médicos, cirujanos y boticarios de Pamplona, cuya existencia influyó en su evolución

Hydrographic Conditions on Flemish Cap in July 1999 and Comparison with Those Observed in Previous Years

13 páginas, 6 figuras, 2 tablas.-- Scientific Council MeetingHydrographic conditions on Flemish Cap in July 1999 are described after a CTD survey with 116 stations. Water masses present over Flemish Cap are compared with those observed in the three previous years. The hydrographic pattern on Flemish Cap in the summer is the consequence of earlier processes and the summer effect. The incoming fluxes over the bank and its relative strength determine the initial water masses field. Later modifications within the topography of the bank give the resulting water masses field. Anomalous warm summer weather with intense solar heating results in AGW (Anticyclonic Gyre Water) with high superficial temperatures. A well-developed anticyclonic gyre may be the consequence of an intense LC (Labrador Current) over the bank and an ulterior Taylor’s column formationThis paper was supported by the European Commission (DG XIV, Study 98-048), CSIC and IEO.Peer reviewe

Effects of Whole-Grain and Sugar Content in Infant Cereals on Gut Microbiota at Weaning: A Randomized Trial

The introduction of complementary foods during infancy marks an important step in the development of the infant gut microbiome. Infant cereals are popular weaning foods but consistent evidence on their effect on the intestinal microbiota, especially when differing in nutritional quality, is lacking. Fecal samples from 4–7-month-old Spanish infants who consumed infant cereals differing in whole grain and sugar content as first weaning foods were analyzed on changes in microbial composition by massively parallel sequencing of the 16S ribosomal RNA gene at baseline and after 7 weeks of intervention. Samples were obtained from a previous trial conducted in Spain demonstrating whole-grain cereal acceptability. In total, samples of 18 infants consuming 0% whole grain cereals with 24 g sugar (0-WG) and 25 infants consuming 50% whole grain cereals with 12 g sugar (50-WG) were analyzed. Microbial composition changed significantly over time (p = 0.001), per intervention group (p = 0.029) and per infant (p = 0.001). Abundance of genus Veillonella increased in both groups while Enterococcus decreased. Within the 0-WG group, phylum Actinobacteria decreased along with genus Bifidobacterium. In the 50-WG, we observed an increase in Lachnoclostridium and Bacteroides. In addition, 50-WG decreased Proteobacteria and Escherichia to levels lower than 0-WG. Although weaning itself appeared to be responsible for most changes, the increased presence of anaerobic fermenters together with inhibition of pathogenic Escherichia may indicate a supporting effect of infant cereals with 50% whole grains and a reduced sugar content over infant cereals manufactured with refined hydrolyzed flours on the infant microbiota. In fact, using a novel methodology for the identification of microbial signatures, we found two groups of microbial taxa predictive of infants consuming enriched whole-grain infant cereals with a high predictive value of about 93%.European funding from ICEX and FEDER—Program R + D Invest 539 in Spain 2015European Regional Development Fund: 20150347

An Asymmetric Index to Compare Trapezoidal Fuzzy Numbers

In this paper, we present a tool to help reduce the uncertainty presented in the resource selection problem when information is subjective in nature. The candidates and the "ideal" resource required by evaluators are modeled by fuzzy subsets whose elements are trapezoidal fuzzy numbers (TrFN). By modeling with TrFN the subjective variables used to determine the best among a set of resources, one should take into account in the decision-making process, not only their expected value, but also the uncertainty that they reflect. Respecting this condition, for each candidate an asymmetric index evaluates the distance between the TrFNs for each of the variables and the corresponding TrFNs of the "ideal" candidate, consolidating them through a weighted average that lets the decision-maker make the final comparison between the candidates, and the selection of the one best suited. We apply this contribution to the case of the selection of the product that is best suited for a "pilot test" to be carried out in some market segment