Output complexity, environmental conditions, and the efficiency of municipalities: a robust metafrontier approach

Over the last few years, many studies have analyzed the productive efficiency of local governments in different countries. An accurate definition of their output bundles -i.e., the services and facilities they provide to their constituencies- is essential to this research. However, several difficulties emerge in this task. First, since in most cases the law only establishes the minimum amount of services and facilities to provide, it may well be the case that some municipalities go beyond the legal minimum and, consequently, might be labeled as inefficient when compared to other municipalities which stick to the legal minimum. Second, municipalities face very different environmental conditions, which raises some doubts about the plausibility of an unconditional analysis. This study tackles these problems by proposing a metafrontier analysis in which the efficiency of municipalities is evaluated after splitting them into clusters according to various criteria (output mix, environmental conditions, size). We perform our estimations using order-m frontiers, given their robustness to outliers and immunity to the curse of dimensionality. We provide an application to Spanish municipalities, and results show that both output mix and, more especially, environmental conditions, should be controlled for, since efficiency differences between municipalities in different groups are notable. Durante los últimos años muchos trabajos han venido analizando la eficiencia productiva de las corporaciones locales de una gran variedad de países. Para este tipo de estudios resulta crucial una definición precisa de los servicios e infraestructuras que los municipios proporcionan a sus ciudadanos. Sin embargo, esta tarea presenta varias dificultades. En primer lugar, dado que en muchas circunstancias la ley únicamente establece los servicios mínimos que debe proporcionar un municipio, puede darse el caso de que algunos municipios vayan más allá de este mínimo legal y, consecuentemente, sean clasificados como ineficientes al compararlos con otros municipios que se ciñen al mínimo. En segundo lugar, las corporaciones locales operan en condiciones ambientales muy dispares, lo cual genera dudas acerca de la factibilidad de un análisis incondicional. Este trabajo aborda estas cuestiones proponiendo un análisis metafrontera en el que la eficiencia de las corporaciones locales se evalúa tras clasificarlas en distintos grupos de acuerdo con criterios múltiples (output mix, condiciones ambientales, tamaño). Las estimaciones son llevadas a cabo utilizando fronteras orden-m, debido a la robustez que presentan frente a observaciones atípicas y la inmunidad a la ¿maldición de la dimensionalidad¿ (curse of dimensionality). Llevamos a cabo una aplicación a los municipios españoles, y los resultados indican que tanto el output mix como, sobre todo, las condiciones ambientales, deberían ser tenidas en cuenta al evaluar la eficiencia, pues las diferencias en la eficiencia de los municipios en los distintos grupos son notables.eficiencia, condiciones ambientales, gobierno local, metafrontera, orden-m efficiency, environmental conditions, local government, metafrontier, order-m

Devolution dynamics of Spanish local government

Over the last few years, there has been a devolutionary tendency in many developed and developingcountries. In this article we propose a methodology to decompose whether the benefits in terms ofefficiency derived from transfers of powers from higher to municipal levels of government (the¿economic dividend¿ of devolution) might increase over time. This methodology is based on linearprogramming approaches for efficiency measurement. We provide an application to Spanishmunicipalities, which have had to adapt to both the European Stability and Growth Pact as well as todomestic regulation seeking local governments¿ balanced budget. Results indicate that efficiencygains from enhanced decentralization have increased over time. However, the way through whichthese gains accrue differs across municipalities¿in some cases technical change is the maincomponent, whereas in others catching up dominates. Durante los últimos años ha habido una corriente hacia la descentralización de poderes desde laadministración central hacia capas más bajas de gobierno, tanto en países desarrollados como envías de desarrollo. En este artículo proponemos una metodología para determinar si los beneficiosen términos de eficiencia derivados de la transferencia de poderes a los municipios (el "dividendo económico" de la descentralización) podrían aumentar en el tiempo. La técnica está basada enenfoques de programación lineal para la medición de la eficiencia. Llevamos a cabo la aplicación alos municipios españoles, que han tenido que adaptarse tanto al Pacto de Estabilidad y Crecimiento europeo, así como a la Ley General de Estabilidad Presupuestaria. Los resultados indican que lasganancias de eficiencia derivadas de una mayor descentralización han aumentado en los últimosaños. Sin embargo, el modo en que estas se originan varía según municipios -en algunos casos es elcambio técnico el factor dominante, en otros han sido las ganancias de eficiencia-.análisis de la actividad, dinámica de la descentralización, eficiencia, gobierno local. activity analysis, decentralization dynamics, efficiency, local government.

Efficiency and quality in local government management : the case of Spanish local authorities

This study analyses efficiency levels in Spanish local governments and their determining factors through the application of DEA (Data Envelopment Analysis) methodology. It aims to find out to what extent inefficiency arises from external factors beyond the control of the entity, or on the other hand, how much it is due to inadequate management of productive resources. The results show that on the whole, there is still a wide margin within which managers could increase local government efficiency levels, although it is revealed that a great deal of inefficiency is due to exogenous factors. It is specifically found that the size of the entity, per capita tax revenue, the per capita grants or the amount of commercial activity are some of the factors determining local government inefficiency

Hipertrofia lipomatosa epicárdica: la entidad desconocida. Diagnóstico y tratamiento

Cardiac lipomatous hypertrophy (CLH) or lipomatous cordis is a not well known cardiac pathology which diagnosis and treatment remain difficult. It is caused by adipocyte hypertrophy and its main feature is non capsulated fatty tissue accumulation. It ́s normally located at the interatrial septum and less frequently at an epicardic location. Having an initial wrong diagnosis of pericardial effusion by transthoracic ecocardiography in most of the symptomatic cases described, epicardial CLH can be studied now by new cardiac imaging techniques such as cardiac computed tomography and cardiac magnetic resonance with high sensitivity and specificityLa hipertrofia lipomatosa cardíaca (HLC) o lipomatosis cordis es una patología cardíaca no bien conocida en la que persisten dificultades en su diagnóstico y manejo terapéutico. Causada por la hiperplasia de lipocitos, se caracteriza por la acumulación de tejido adiposo no encapsulado, siendo su localización más frecuente en el septo interauricular, y más desconocida a nivel epicárdico. Con un diagnóstico inicial erróneo con ecocardiografía transtorácica de derrame pericárdico en la mayor parte de los escasos casos sintomáticos descritos de HLC epicárdica en la literatura médica, las nuevas técnicas de imagen como la tomografía computerizada (TC) y cardiorresonancia magnética (cardio-RM) permiten caracterizar el tejido con alta sensibilidad y especificidad

Study of serum ctx in 50 oral surgical patients treated with oral bisphosphonates

Objectives: To determine whether there is a relationship between the total BP dose administered and the variations in serum CTX concentration. Study design: The study included 50 patients requiring dental implant surgery and treated with oral BPs, seen in an Oral Surgery and Implantology Unit between January 2007 and June 2009. The patients were divided into two groups: those in which the medication was not suspended before obtaining the laboratory test sample, and those patients referred from other dental clinics in which BPs was suspended before reporting to our Unit. The total drug dosage administered and the total dose per kilogram body weight were evaluated for comparison with serum CTX. The data obtained were correlated to the osteonecrosis risk table developed by Marx et al. in 2007. Results: There were no significant differences between the two groups in relation to the total administered dose and the dose in mg/kg b.w. Likewise, in both groups no relationship was observed between the serum CTX value and the total administered dose or the dose in mg/kg b.w. No differences were found between the two patient groups regarding chemical osteonecrosis risk based on the criteria of Marx et al. Conclusions: No relationship was observed between the oral BP dose administered (total dose or expressed in mg/kg b.w.) and serum CTX concentration, and suspension of the medication did not influence the serum CTX levels

Use of restoration plantings to enhance bird seed dispersal at the roadside: failures and prospects

Plantings are commonly used in roadside reclamation for ornamental purposes and for increasing slope stability and road safety. However, the role of these plantings in restoring ecological processes, such as seed dispersal, has received little attention. We carried out a study to assess the potential role of plantings on roadside embankments to attract frugivorous birds and to enhance seed dispersal mediated by birds from the surrounding landscape. We examined: (1) bird species richness and abundance; (2) patterns of avian spatial distribution within embankments and (3) seed dispersal mediated by birds. Bird richness and abundance did not differ between embankments with and without plantings. However, birds were not distributed randomly within embankments, with levels of species richness and abundance for facultative frugivorous between 4.8–8 times higher in areas closer to plantings. An analysis of bird droppings showed that birds only dispersed seeds of the planted species since no seeds of woody plants from matrices were detected. These results suggest that plantings acted as selective bird attractors, providing food and perches for frugivorous species. Nevertheless, the scarcity of seed-dispersing birds in the surrounding agricultural landscape prevented plantings from enhancing seed dispersal and connectivity to adjacent habitat

Forest Restoration in a Fog Oasis: Evidence Indicates Need for Cultural Awareness in Constructing the Reference

Background: In the Peruvian Coastal Desert, an archipelago of fog oases, locally called lomas, are centers of biodiversity and of past human activity. Fog interception by a tree canopy, dominated by the legume tree tara (Caesalpinia spinosa), enables the occurrence in the Atiquipa lomas (southern Peru) of an environmental island with a diverse flora and high productivity. Although this forest provides essential services to the local population, it has suffered 90% anthropogenic reduction in area. Restoration efforts are now getting under way, including discussion as to the most appropriate reference ecosystem to use. Methodology/Principal Findings: Genetic diversity of tara was studied in the Atiquipa population and over a wide geographical and ecological range. Neither exclusive plastid haplotypes to loma formations nor clear geographical structuring of the genetic diversity was found. Photosynthetic performance and growth of seedlings naturally recruited in remnant patches of loma forest were compared with those of seedlings recruited or planted in the adjacent deforested area. Despite the greater water and nitrogen availability under tree canopy, growth of forest seedlings did not differ from that of those recruited into the deforested area, and was lower than that of planted seedlings. Tara seedlings exhibited tight stomatal control of photosynthesis, and a structural photoprotection by leaflet closure. These drought-avoiding mechanisms did not optimize seedling performance under the conditions produced by forest interception of fog moisture. Conclusions/Significance: Both weak geographic partitioning of genetic variation and lack of physiological specialization of seedlings to the forest water regime strongly suggest that tara was introduced to lomas by humans. Therefore, the most diverse fragment of lomas is the result of landscape management and resource use by pre-Columbian cultures. We argue that an appropriate reference ecosystem for ecological restoration of lomas should include sustainable agroforestry practices that emulate the outcomes of ancient uses

Rubrica d’avaluació de l’activitat Demostracions Psicosocials

La rúbrica que es presenta és l’instrument per avaluar el seminari de Demostracions Psicosocials que es realitza com activitat d’avaluació continuada en l’assignatura de Ciències Psicosocials Aplicades a la Salut, en el primer curs del Grau d’Infermeria

Magnetic fields inferred by Solar Orbiter: A comparison between SO/PHI-HRT and SDO/HMI

Context. The High Resolution Telescope (HRT) of the Polarimetric and Helioseismic Imager on board the Solar Orbiter spacecraft (SO/PHI) and the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory (SDO) both infer the photospheric magnetic field from polarised light images. SO/PHI is the first magnetograph to move out of the Sun–Earth line and will provide unprecedented access to the Sun’s poles. This provides excellent opportunities for new research wherein the magnetic field maps from both instruments are used simultaneously. Aims. We aim to compare the magnetic field maps from these two instruments and discuss any possible differences between them. Methods. We used data from both instruments obtained during Solar Orbiter’s inferior conjunction on 7 March 2022. The HRT data were additionally treated for geometric distortion and degraded to the same resolution as HMI. The HMI data were re-projected to correct for the 3° separation between the two observatories. Results. SO/PHI-HRT and HMI produce remarkably similar line-of-sight magnetograms, with a slope coefficient of 0.97, an offset below 1 G, and a Pearson correlation coefficient of 0.97. However, SO/PHI-HRT infers weaker line-of-sight fields for the strongest fields. As for the vector magnetic field, SO/PHI-HRT was compared to both the 720-second and 90-second HMI vector magnetic field: SO/PHI-HRT has a closer alignment with the 90-second HMI vector. In the weak signal regime (< 600 G), SO/PHI-HRT measures stronger and more horizontal fields than HMI, very likely due to the greater noise in the SO/PHI-HRT data. In the strong field regime (≳600 G), HRT infers lower field strengths but with similar inclinations (a slope of 0.92) and azimuths (a slope of 1.02). The slope values are from the comparison with the HMI 90-second vector. Possible reasons for the differences found between SO/PHI-HRT and HMI magnetic field parameters are discussed.Sección Deptal. de Óptica (Óptica)Fac. de Óptica y OptometríaTRUEBMWi - Bundesministerium für Wirtschaft und Energie (Alemania)AEI/MCIN/10.13039/501100011033Ministerio de ciencia e innovación de EspañaInstituto Astrofísico de Andalucía (España)Agencia Estatal de Investigación (España)Fondo Europeo de Desarrollo Regional (Fondos FEDER)Centre national d'études spatiales (CNES) (Francia)CSIC (Centro Superior de Investigaciones Científicas) (España)pu

Coronal voids and their magnetic nature

Context. Extreme ultraviolet (EUV) observations of the quiet solar atmosphere reveal extended regions of weak emission compared to the ambient quiescent corona. The magnetic nature of these coronal features is not well understood.Aims. We study the magnetic properties of the weakly emitting extended regions, which we name coronal voids. In particular, we aim to understand whether these voids result from a reduced heat input into the corona or if they are associated with mainly unipolar and possibly open magnetic fields, similar to coronal holes. Methods. We defined the coronal voids via an intensity threshold of 75% of the mean quiet-Sun (QS) EUV intensity observed by the high- resolution EUV channel (HRIEUV) of the Extreme Ultraviolet Imager on Solar Orbiter. The line-of-sight magnetograms of the same solar region recorded by the High Resolution Telescope of the Polarimetric and Helioseismic Imager allowed us to compare the photospheric magnetic field beneath the coronal voids with that in other parts of the QS.Results. The coronal voids studied here range in size from a few granules to a few supergranules and on average exhibit a reduced intensity of 67% of the mean value of the entire field of view. The magnetic flux density in the photosphere below the voids is 76% (or more) lower than in the surrounding QS. Specifically, the coronal voids show much weaker or no network structures. The detected flux imbalances fall in the range of imbalances found in QS areas of the same size. Conclusions. We conclude that coronal voids form because of locally reduced heating of the corona due to reduced magnetic flux density in the photosphere. This makes them a distinct class of (dark) structure, different from coronal holes