Los tribunales administrativos especiales de contratación pública ante las previsiones del informe de la Comisión para la Reforma de las Administraciones Públicas. Balance y prospectiva

Se aborda en este estudio la función de los órganos de recursos contractuales para la resolución de los recursos especiales. Se analiza la eficacia desde su funcionamiento y se postula la consolidación del modelo como herramienta efectiva de control y garantía del derecho a una buena Administración.This paper examines the operation of the courts handling appeals on contractual matters within the domain of special appeals. It analyzes their effectiveness and recommends the consolidation of the model as an effective tool to oversee and guarantee the right to good governance.En aquest estudi s'aborda la funció dels òrgans de recursos contractuals per a la resolució dels recursos especials. S'analitza l'eficàcia del seu funcionament i es postula la consolidació del model com a eina efectiva de control i garantia del dret a una bona Administració

Combined Effects of the North Atlantic Oscillation and the Arctic Oscillation on Sea Surface Temperature in the Alborán Sea

We explored the possible effects of the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) on interannual sea surface temperature (SST) variations in the Albora´n Sea, both separately and combined. The probability of observing mean annual SST values higher than average was related to NAO and AO values of the previous year. The effect of NAO on SST was negative, while that of AO was positive. The pure effects of NAO and AO on SST are obscuring each other, due to the positive correlation between them. When decomposing SST, NAO and AO in seasonal values, we found that variation in mean annual SST and mean winter SST was significantly related to the mean autumn NAO of the previous year, while mean summer SST was related to mean autumn AO of the previous year. The one year delay in the effect of the NAO and AO on the SST could be partially related to the amount of accumulated snow, as we found a significant correlation between the total snow in the North Albora´n watershed for a year with the annual average SST of the subsequent year. A positive AO implies a colder atmosphere in the Polar Regions, which could favour occasional cold waves over the Iberian Peninsula which, when coupled with precipitations favoured by a negative NAO, may result in snow precipitation. This snow may be accumulated in the high peaks and melt down in spring-summer of the following year, which consequently increases the runoff of freshwater to the sea, which in turn causes a diminution of sea surface salinity and density, and blocks the local upwelling of colder water, resulting in a higher SST.CGL2009-11316 (Ministerio de Ciencia e Innovación, Spain, and FEDER

Evaluación del proceso de toma de decisiones en el contexto del arbitraje deportivo : propiedades psicométricas de la adaptación espanola del cuestionario DMQ II en árbitros de balonmano

En este trabajo presentamos un estudio preliminar para adaptar el cuestionario Decision Making Questionaire II (DMQ-II) a la población española de árbitros deportivos, con el propósito de contar con un instrumento auxiliar que facilite el estudio de las diferencias individuales en la toma de decisiones. La muestra estaba compuesta por 131 árbitros de balonmano pertenecientes a las categorías de división de honor, primera división y categoría territorial. La estructura factorial de los datos, así como la consistencia interna del instrumento, confirman la existencia de distintos patrones de conducta ante situaciones de decisión en el contexto del arbitraje en el deporte del balonmano relacionados con: estrés en la toma de decisiones; decisión rápida con incertidumbre; y determinación y compromiso en la toma de decisiones.The present pilot study was carried out with a sample of 131 handball umpires of Spain, with the aim of adapting the Decision Making Questionnaire II (DMQ-II questionaire) and developing an instrument that may help to study individual differences in decision making. Three factors were extracted:stress management and decision making; quick decision making with uncertainty; and determination and commitment to decision making. The factorial structure of the data, as well as the values of internal consistency of the scales, confirm the existence of different patterns of behaviour

Clinical and pathological aspects and cerebellar lectin binding in cattle poisoned with Solanum fastigiatum var. fastigiatum and Solanum bonariense

Microscopic and lectin histochemical studies were performed using the cerebella of 33 natural cases of Solanum fastigiatum var. fastigiatum intoxication in the cattle from southern Brazil and 2 natural and 4 experimental cases of Solanum bonariense from Uruguay. The following biotinylated lectins were used in both cases: WGA, sWGA, BS-I, Con-A, RCA-I, DBA, and UEA-I, with the addition of LCA in S. fastigiatum poisoning cases. Histologically, the lesions consisted of fine vacuolization, distention of portions of the Purkinje cells, axonal spheroids measuring 14-50 m in the granular cell layer and adjacent white matter and, proliferation of the Bergmann?s glia. Lectin histochemistry revealed strong reactivity of stored material in Purkinje neurons with the lectins sWGA, Con-A, and LCA in S. fastigiatum cases. A similar pattern was found in S. bonariense cases with a most intense reactions to WGA, and less intense reaction to Con-A, whereas BS-I and RCA-I binding was absent to poor in these neurons in all the cases studied.Lectin reactivity in Purkinje cells between cases was independent of cell damage (from mild to severe loss of neurons). Both S. fastigiatum and S. bonariense have similar lectin binding,  suggesting a similar pathogenesis. Since comparable binding patterns have been described in animals poisoned with swainsonine-containing plants, perhaps the toxins in these plants contain related glycosidaseinhibiting toxins or inhibit glycoprotein and lysosomal metabolism through some related mechanism. The results of this study showed that in spontaneous poisoning by S. fastigiatum and S. bonariense in the cattle, the pattern of lectin binding is similar to those observed in S. fastigiatum experimental conditions.Fil: Sant’Ana, Fabiano J.F.. Universidade Federal de Santa Catarina; BrasilFil: Barbeito, Claudio Gustavo. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Nishida, Fabian. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Gimeno, Eduardo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias; ArgentinaFil: Verdes, José M.. Universidad de la República. Facultad de Ciencias; UruguayFil: Moraña, Antonio. Universidad de la República; UruguayFil: Barros, Claudio S.L.. Universidad de la República; Urugua

Using PLS-SEM to Analyze the Effect of CSR on Corporate Performance: The Mediating Role of Human Resources Management and Customer Satisfaction: An Empirical Study in the Spanish Food and Beverage Manufacturing Sector

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). This is the published versión of a published work that apear in final form in Mathematics. To see the final versión see https://doi.org/10.3390/math9222973Although in recent decades corporate social responsibility (CSR) has been subjected to numerous studies in management and marketing literature about its impact on business results, the mechanism by which it affects performance has not been established. There is a lack of consensus when it comes to explaining how CSR actions are related to firm performance. Our research helps to understand this relationship through mediating effects such as CSR-oriented human resource management and customer satisfaction because employees and customers are critical stakeholders of companies and contribute directly to the determination of the corporate results. Through a study on a sample of small and medium-sized Spanish food and beverage manufacturing companies, and by using partial least squares structural equation modelling (PLS-SEM), we found that CSR does indeed impact business performance when CSR actions are mainly oriented towards more efficient management of human resources and customer satisfaction. In this way, the results lead us to conclude that depending on the stakeholder to which these actions are oriented, a specific orientation of the company’s CSR policy can be more efficient in corporate performanc

Synthesis, Photochemical, and Redox Properties of Gold(I) and Gold(III) Pincer Complexes Incorporating a 2,2′:6′,2″-Terpyridine Ligand Framework

Reaction of [Au(C6F5)(tht)] (tht = tetrahydrothiophene) with 2,2′:6′,2″-terpyridine (terpy) leads to complex [Au(C6F5)(η1-terpy)] (1). The chemical oxidation of complex (1) with 2 equiv of [N(C6H4Br-4)3](PF6) or using electrosynthetic techniques affords the Au(III) complex [Au(C6F5)(η3-terpy)](PF6)2 (2). The X-ray diffraction study of complex 2 reveals that the terpyridine acts as tridentate chelate ligand, which leads to a slightly distorted square-planar geometry. Complex 1 displays fluorescence in the solid state at 77 K due to a metal (gold) to ligand (terpy) charge transfer transition, whereas complex 2 displays fluorescence in acetonitrile due to excimer or exciplex formation. Time-dependent density functional theory calculations match the experimental absorption spectra of the synthesized complexes. In order to further probe the frontier orbitals of both complexes and study their redox behavior, each compound was separately characterized using cyclic voltammetry. The bulk electrolysis of a solution of complex 1 was analyzed by spectroscopic methods confirming the electrochemical synthesis of complex 2

1,4-Bis(2′-pyridylethynyl)benzene as a ligand in heteronuclear gold–thallium complexes. Influence of the ancillary ligands on their optical properties

The reaction of 1,4-bis(2′-pyridylethynyl)benzene (L) with [{Au(C6X5)2}Tl]n affords new heterometallic AuI/TlI complexes with different stoichiometries, structural arrangements and optical properties depending on the halogens present in the aryl group. The chlorinated derivative [{Au(C6Cl5)2}Tl(L)]n (1) displays polymeric chains built thanks to unsupported Au⋯Tl interactions and bridging bidentate ligands between adjacent chains, while in the fluorinated species [{Au(C6F5)2}2Tl2(L)2]n (2), also containing N-donor bridging ligands and Au⋯Tl contacts, polymerization occurs via Tl⋯Caryl non-bonding interactions between neighbouring molecules. The optical properties of 1 and 2 have been studied experimentally and theoretically, concluding that the luminescence of 1 in the solid state has its origin in the Au⋯Tl interactions, and that the Tl⋯Caryl interactions in 2 favour a non-radiative deactivation pathway that avoids luminescence. The strength of the non-bonding interactions present in 1 has also been theoretically studied at the HF and MP2 levels, revealing the metallophilic contact as the strongest one.This work was supported by the D.G.I. (MEC)/FEDER (CTQ2013-48635-C2-2-P).Peer reviewe

La escritura medieval de la Corona de Aragón (1137-1474)

In this study, we analyze concisely the evolution of the forms adopted by the script of the Crown of Aragon, from 1137 until 1474. The chronological period analyzed includes the formal variations of the gothic and the humanistic ones. We have not only described the external aspect and the chronology for both of them, but we have also tried to rebuild the different contexts of use of the writing and the formal characteristics that it adopted, as far as the different functionality is concer­ned. Given that the most studied field is the Royal Cancillería, its documentation forms the leading thread of this article. Moreover, ocher material (epigraphic, phylactery, from books, etc.) will allow us to rebuild the whole history of medieval script used in the different fields.Ce travail présente, de manière schématique, l'évolution des formes adoptées par l'écriture dans la Couronne d'Aragon de 1137 à 1474. La période chronologique analysée comprend les variantes exactes de la gothique et de l'humanistique. Ce n'est pas seulement l'aspect extérieur et la chronologie de chacune qui y sont décrits, on a prétendu, aussi, y reconstruire les différents contextes en usage de l'écriture et les caractéristiques exactes qu'elle a adopté en tenant compte de la diversité de sa fonction. Etant donné que le terrain le plus étudié est la Chancellerie royale, sa documentation agit en tant que fil conducteur du travail. Cela n'empêche pas que l’on démontre, à travers des textes, d'autres matériaux (épigraphiques, phylactères, de livres, etc.) qui permettront de reconstituer l'histoire complète de l'écriture médiévale employée dans les différents milieux

Células madre de cordón umbilical : usos clínicos y perspectivas

La sangre de cordón umbilical (SCU) se presenta como una fuente alternativa de progenitores hematopoyéticos (PH) frente a la medula ósea, pues posee determinadas características que resuelven los mayores problemas presentes en el uso de PH de medula ósea en terapias celulares. La facilidad y rapidez para obtener una muestra compatible, y la permisividad de incompatibilidad de HLA debido a su baja inmunogenicidad, han hecho que los investigadores de todo el mundo comiencen a usar los PH de la SCU, en lugar de los de medula para los trasplantes. Los bancos de SCU son los encargados de preservar las muestras, permitiendo la creación de una red mundial de donantes que ha aumentado el número de trasplantes no relacionados de manera exponencial a lo largo de los últimos años. El tipo de trasplante de SCU que se realice dependerá de la enfermedad que se quiera tratar, realizándose trasplantes autólogos para hemoglobinopatías adquiridas, tumores sólidos y enfermedades producidas por tóxicos o virus, y trasplantes alogénicos para hemoglobinopatías hereditarias. También en la medicina regenerativa se están produciendo grandes avances; por el uso de la SCU en diversas terapias para enfermedades como el Alzheimer, Parkinson o Huntington, y los nuevos estudios de determinación de los posibles usos de las células mesenquimales procedentes del cordón umbilical. Estas razones hacen del uso de la sangre de cordón uno de los descubrimientos más importantes de los últimos año

Valoración de los niveles de PCR tras artroplastia total de cadera

Objetivo: Determinación de la respuesta fisiológica de la Proteína C Reactiva (PCR) y la velocidad de sedimentación glomerular (VSG) tras la artroplastia total de cadera (ATC) no infectada. Material y Métodos: se realizó un estudio descriptivo sobre 20 pacientes afectos de coxartrosis primaria e intervenidos mediante ATC (18 pacientes tipo Auto-fit cementada y 2 pacientes tipo Prophor no cementada). Se determinaron los valores de VSG, PCR, fibrinógeno, hematocrito, hematíes y temperatura corporal matinal preoperatoriamente y en los días 1º, 2º, 3º, 7º, decimocuarto y a los 3 meses tras la intervención. Resultados: Se realizó el test de ANOVA para medidas repetidas con los valores obtenidos. Existieron diferencias significativas entre los niveles de PCR medidos en los diferentes momentos del estudio (p<0,001), alcanzando los niveles máximos dicho parámetro el 2º día postoperatorio y descendiendo sensiblemente a partir del 7º día postintervención. Conclusiones: La permanencia de valores altos de PCR o la aparición de nuevos picos tras el 2º -3er día postoperatorio puede ser un indicador de complicaciones graves en la ATC.Objectives: To determine the physiological answer of the reactive protein C (RPC) and the speed of globular sedimentation (SGS) after non infected total hip arthroplasty (THA). Material and methods: a descriptive study on a total sample of 20 patients suffering primary coxarthrosis and operated with THA was performed (18 patients with cemented Auto-Fit Prosthesis and 2 patients with cementless Prophor Prosthesis). The values of SGS, RPC, fibrinogen and morning body temperature were determined before the surgical proce- dure and on day 1, 2, 3, 7, 14 and 90 after it. Results: an ANOVA test was used for repeated measurements of the obtained results. There were statistically significant differences in the levels of RPC obtained in the different days of the study (p<0.001), obtaining the highest levels of it on day 2 after surgery and highly decreasing from day 7 after surgery onwards. Conclusions: the maintenance of increased levels of RPC or the appearance of new peaks after the day 2 or 3 after surgery may be an indicator of severe complications in THA