Validación de la Escala de “Satisfacción de las Necesidades Psicológicas Básicas” y del Cuestionario de la “Regulación Conductual en el Deporte” al contexto español. (Validation of Psychological Need Satisfaction in Exercise Scale and the Behavioural Regulation in Sport Questionnaire to the Spanish context).

Resumen<p align="justify">El objetivo de este estudio fue adaptar y validar al contexto deportivo español la Escala de Satisfacción de Necesidades Psicológicas Básicas (PNSE) y el Cuestionario de la Regulación Conductual (BRSQ). Para ello se utilizó una muestra de 298 deportistas españoles, con una media de edad de 14 años. Se llevaron a cabo diferentes análisis factoriales confirmatorios, análisis de consistencia interna y de correlación. Tras los respectivos análisis factoriales confirmatorios, tanto la PNSE (2 = 222.62, p = .00, 2/g.l. = 129, CFI = .91, IFI = .92, TLI = .91, RMSEA = .04, SRMR = .08) como la BRSQ (2 = 824.56, p = .00, 2/g.l. = 558, CFI = .92, IFI = .91, TLI = .92, RMSEA = .04, SRMR = .06) presentaron valores adecuados. De igual forma, la consistencia interna obtenida de las respectivas dimensiones estuvo por encima de .70. Se observó una correlación positiva y significativa entre las tres necesidades psicológicas básicas, así como de éstas con la motivación intrínseca (hacia el conocimiento, consecución y estimulación), la regulación integrada y la regulación identificada. Por su parte, la necesidad de competencia correlacionó de forma negativa y significativa con la desmotivación, mientras que la necesidad de relación con los demás lo hizo con la desmotivación, la regulación introyectada y la regulación externa. Este estudio ha permitido proporcionar dos escalas válidas y fiables para evaluar la satisfacción de las necesidades psicológicas básicas y la motivación de los practicantes de actividad física y deportiva.</p>Abstract<p align="justify">The objective of this paper was to adapt and to validate to the Spanish sport context the Psychological Need Satisfaction in Exercise Scale (PNSE) and the Behavioural Regulation in Sport Questionnaire (BRSQ). The sample was 298 Spanish sportspersons, with a mean of 14 years old. Confirmatory Factor Analysis (CFA), internal consistency and correlation analysis were made. The respective CFAs showed that PNSE (2 = 222.62, p = .00, 2/g.l. = 129, CFI = .91, IFI = .92, TLI = .91, RMSEA = .04, SRMR = .08) and BRSQ (2 = 824.56, p = .00, 2/g.l. = 558, CFI = .92, IFI = .91, TLI = .92, RMSEA = .04, SRMR = .06) had good values. In the same way, the internal consistency of the respective dimensions was greater than .70. It was observed a positive and significant correlation between the three basic psychological needs, and between these ones and intrinsic motivation (to knowledge, achievement and stimulation), the integrated regulation and identified motivation. On the other hand, the necessity of competency correlated negatively and significantly with demotivation, while the necessity of relationship with others correlated with demotivation, introjected regulation and external regulation. This work has showed two valid and reliable scales for evaluating the satisfaction with the basic psychological needs and the motivation of practitioners of physical and sport activity.</p

Irradiation of carbon nanotubes with carbon projectiles: A molecular dynamics study

The irradiation of carbon based nanostructures with ions and electrons has been shown to be an appropriate tool to tailor their properties. The defects induced in the nanostructures during irradiation are able to modify their mechanical and electronic properties. Here we simulate the irradiation of carbon nanotubes with carbon ions using a molecular dynamics code. We use the Tersoff potential joined smoothly to the Universal Ziegler-Biersack-Littmark potential at short distances. We study the number of defects produced after irradiation with a single carbon ion finding a saturation with its energy at ∼ 3 keV. We observe, after continuum irradiation with low energy ions, the formation of bumps in the irradiated region. For larger energy ions we find that the diameter of the nanotube shrinks as shown in previous works.This work has been financially supported by Project FIS2010-17225 by the Spanish Ministerio de Ciencia e Innovación

Classical BSE prions emerge from asymptomatic pigs challenged with atypical/Nor98 scrapie

Pigs are susceptible to infection with the classical bovine spongiform encephalopathy (C-BSE) agent following experimental inoculation, and PrPSc accumulation was detected in porcine tissues after the inoculation of certain scrapie and chronic wasting disease isolates. However, a robust transmission barrier has been described in this species and, although they were exposed to C-BSE agent in many European countries, no cases of natural transmissible spongiform encephalopathies (TSE) infections have been reported in pigs. Transmission of atypical scrapie to bovinized mice resulted in the emergence of C-BSE prions. Here, we conducted a study to determine if pigs are susceptible to atypical scrapie. To this end, 12, 8–9-month-old minipigs were intracerebrally inoculated with two atypical scrapie sources. Animals were euthanized between 22- and 72-months post inoculation without clinical signs of TSE. All pigs tested negative for PrPSc accumulation by enzyme immunoassay, immunohistochemistry, western blotting and bioassay in porcine PrP mice. Surprisingly, in vitro protein misfolding cyclic amplification demonstrated the presence of C-BSE prions in different brain areas from seven pigs inoculated with both atypical scrapie isolates. Our results suggest that pigs exposed to atypical scrapie prions could become a reservoir for C-BSE and corroborate that C-BSE prions emerge during interspecies passage of atypical scrapie

Collision cascade effects near an edge dislocation dipole in alpha-Fe: Induced dislocation mobility and enhanced defect clustering

Collision cascades near a 1/2⟨111⟩{110} edge dipole in alpha-iron have been studied using molecular dynamics simulations for a recoil energy of 20 keV and two temperatures, 20 K and 300 K. These simulations show that the collision cascade induces the migration of the dislocations through glide along its slip plane. The motion of the dislocations starts at the peak of the collision cascade and expands a time scale much longer than the cascade duration, until restoring the equilibrium distance of the dipole, regardless of the damage produced by the cascade. At the initial stages, kinks are formed at the dislocation that enhance glide. When defects reach the dislocations, jogs are produced. We show that the initial dislocation motion is triggered by the shock wave of the collision cascade. The cascade morphology is also strongly influenced by the presence of the dislocations, having an elongated form at the peak of the displacement, which demonstrates the strong interaction of the dislocations with the cascade even at the early stages. Finally, we show that larger vacancy clusters are formed in the presence of dislocations compared to isolated cascades and that these clusters are larger for 300 K compared to 20 K.This work was partly supported by the Generalitat Valenciana through PROMETEO2017/139. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 and 2019–2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. EM gratefully acknowledges support from the U.S. DOE, Office of Science, Office of Fusion Energy Sciences, and Office of Advanced Scientific Computing Research through the Scientific Discovery through Advanced Computing (SciDAC) project on Plasma-Surface Interactions (award no. DE-SC0008875)

An integrated tool for assessing the demand profile flexibility

The purpose of this paper is to describe an integrated tool whose aim is to assess the residential demand profile flexibility through the control of space conditioning loads, mainly air conditioner and heat pump appliances. This assessment has been divided into two principal tasks—an estimation of the controllable load and a selection of the optimum load control strategy according to a target profile and a set of prefixed constraints. The tool also provides the aggregated load behavior, allowing a comparison between different load strategies. This tool can be applied from the customer’s and the utility’s side. An application example to a real environment is also presented.This work was supported by the Ministerio de Ciencia y Tecnología of Spain through Research Project DPI2001- 2779-C02-01

Electrical thermal storage modeling: a tool to valuate new opportunities and bids for residential users in a deregulated market

The purpose ofthis paper is to describe a useful tool for the initial analysis to assess the possibilities of residential Electric Thermal Storage (ETS), taking into account heat storage and cool storage devices. These load models are based on an energy balance between the indoor environment, the dwelling constructive parameters, the ETS device and the internal mass through a discrete statespace equation system. The main application of this load model has been oriented towards the simulation of ETS performance in order to evaluate the possibilities of Load Management in the new de-regulated structures of Electrical Power Systems. The proposed model has been implemented and validated for heat storage, using real data collected during the last years in residential areas to evaluate its accuracy and flexibility. Finally, a simulation case study is presented to show the possibilities of modifying the actual residential demand profile through a storage period re-scheduling proposed by the authors, taking into account the customer minimum comfort levels and avoiding program rejection.The work described in this paper is financially supported by the Ministerio de Ciencia y Tecnologia of Spain, through a research project (Ref. DP12001-2779-C02-01). The authors are very grateful to the Spanish company Gabarrón-Elnur S.A. for the generous cession of its commercial ETS appliances in order to test them and for its support to this research

Semigroups with fixed multiplicity and embedding dimension

Given m is an element of N, a numerical semigroup with multiplicity m is called a packed numerical semigroup if its minimal generating set is included in {m, m + 1 , ..., 2m - 1}. In this work, packed numerical semigroups are used to build the set of numerical semigroups with a given multiplicity and embedding dimension, and to create a partition of this set. Wilf's conjecture is verified in the tree associated to some packed numerical semigroups. Furthermore, given two positive integers m and e, some algorithms for computing the minimal Frobenius number and minimal genus of the set of numerical semigroups with multiplicity m and embedding dimension e are provided. We also compute the semigroups where these minimal values are achieved

Destrezas matemáticas previas de los estudiantes de grado en Ingenierías y Arquitectura

Muchos profesores de asignaturas de física y de matemáticas que imparten docencia en el primer curso de las titulaciones técnicas de Grado detectan un empeoramiento de las destrezas matemáticas básicas de los alumnos de nuevo ingreso. Esta situación dificulta el proceso de enseñanza-aprendizaje y lastra negativamente las posibilidades de éxito de muchos estudiantes de primer curso. Esta clara sensación, sin embargo necesita de una definición cuantitativa. En este proyecto, nos planteamos realizar un análisis cuantitativo de las destrezas en matemáticas básicas de los nuevos matriculados en las titulaciones de Grado de la Escuela Politécnica Superior (EPS), para impulsar un debate en la comunidad universitaria y pre-universitaria que lleve a proponer medidas concretas dirigidas a mejorar las habilidades en nuestros estudiantes

Recensiones [Revista de Historia Económica Año XXI Primavera-Verano 2003 n. 2 pp. 437-462]

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MicroRNA Alterations in a Tg501 Mouse Model of Prion Disease

MicroRNAs (miRNAs) may contribute to the development and pathology of many neurodegenerative diseases, including prion diseases. They are also promising biomarker candidates due to their stability in body fluids. We investigated miRNA alterations in a Tg501 mouse model of prion diseases that expresses a transgene encoding the goat prion protein (PRNP). Tg501 mice intracranially inoculated with mouse-adapted goat scrapie were compared with age-matched, mock inoculated controls in preclinical and clinical stages. Small RNA sequencing from the cervical spinal cord indicated that miR-223-3p, miR-151-3p, and miR-144-5p were dysregulated in scrapie-inoculated animals before the onset of symptoms. In clinical-stage animals, 23 significant miRNA alterations were found. These miRNAs were predicted to modify the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways including prion disease, extracellular matrix interactions, glutaminergic synapse, axon guidance, and transforming growth factor-beta signaling. MicroRNAs miR-146a-5p (up in cervical spinal cord) and miR-342-3p (down in cervical spinal cord, cerebellum and plasma), both indicated in neurodegenerative diseases earlier, were verified by quantitative real-time polymerase chain reaction (qRT-PCR). Minimal changes observed before the disease onset suggests that most miRNA alterations observed here are driven by advanced prion-associated pathology, possibly limiting their use as diagnostic markers. However, the results encourage further mechanistic studies on miRNA-regulated pathways involved in these neurodegenerative conditions