A new trackway possibly made by a trotting theropod at the Las Hoyas fossil site (Early Cretaceous, Cuenca Province, Spain): Identification, bio-dynamics and palaeoenvironmental implications

A new trackway possibly made by a trotting theropod at the Las Hoyas fossil site (Early Cretaceous, Cuenca Province, Spain): Identification, bio-dynamics and palaeoenvironmental implication

High astrometric precision in the calculation of the coordinates of orbiters in the Geo Ring

We present an astrometric method for the calculation of the positions of orbiters in the GEO ring with a high precision, through a rigorous astrometric treatment of observations with a 1-m class telescope, which are part of the CIDA survey of the GEO ring. We compute the distortion pattern to correct for the systematic errors introduced by the optics and electronics of the telescope, resulting in absolute mean errors of 0.16" and 0.12" in right ascension and declination, respectively. These correspond to ˜ 25 m at the mean distance of the GEO ring, and are thus good quality results

Relación entre motivación, compromiso y autoconcepto en adolescentes: estudio con futbolistas

El objetivo de este trabajo fue analizar las relaciones entre motivación, compromiso deportivo y autoconcepto físico en futbolistas adolescentes de la provincia de Zaragoza en categorías Cadete (14-16 años) y Juvenil (16-18 años) así como atender a posibles diferencias entre las divisiones que las componen, más o menos competitivas. Para ello, se utilizó una muestra de 512 sujetos pertenecientes a 37 equipos de 12 clubes de la ciudad (M=16,00; DT: 1,465) a quienes se suministró la Sport Motivation Scale (Pelletier et al.,1995) validada y traducida al español por Núñez, Martín-Albo, Navarro y González (2006), Sport Commitment Questionnaire (SCQ), desarrollado por Scanlan, Simons, Carpenter, Schmidt y Keeler (1993), en una versión traducida y validada al castellano por Sousa, Torregrosa, Viladrich, Villamarín y Cruz (2007) y Physical Self-Questionnaire (C-PSQ) de Fox y Corbin (1999) utilizando una versión traducida al castellano de Moreno, Cervelló, Vera y Ruiz (2007) orientada hacia jóvenes. Los resultados mostraron diferencias significativas entre los diferentes niveles de competición así como dos perfiles conductuales; el primero caracterizado por comportamientos más autodeterminados (motivaciones intrínsecas, compromiso adquirido, diversión deportiva, oportunidades de implicación, competencia percibida, autoconfianza…) y otro, de conductas menos adaptativas (motivaciones extrínsecas, amotivación, coacciones sociales, atractivo físico…). The aim of this research was toanalyse the relationships between motivation, sport commitment and physical self-concept among adolescent footballers in the province of Zaragoza in the categories of Juniors I (14-16 years) and Juniors II (16-18 years) as well as exploring possible differences between the more or less competitive divisions. In order to carry this out, a sample of 512 subjects belonging to 37 teams of 12 clubs around the city were involved(M=16,00; SD: 1,465) and who were provided with the Sport Motivation Scale (Pelletier et al., 1995) translated into Spanish by Núñez, Martín-Albo, Navarro y González (2006), the Sport Commitment Questionnaire (SCQ), elaborated by Scanlan, Simons, Carpenter, Schmidt y Keeler (1993), in a version translated into Spanish bySousa, Torregrosa, Viladrich, Villamarín y Cruz (2007), and Fox and Corbin''s (1999) Physical Self-Questionnaire (C-PSQ), using the version of Moreno, Cervelló, Vera y Ruiz (2007) aimed at young people and translated into Spanish. The results showed significant differences among the distinct levels of competitiveness as well as two behavioural profiles: the first one characterised by more selfdetermined behaviour (intrinsic motivation, sport commitment, sport enjoyment, involvement opportunities, competence, self-confidence...) and the second one distinguished by less adaptive behaviour (extrinsic motivation, amotivation, social constraints, attractive body...)

Prevalence of electrocardiographic findings associated to sudden cardiac death: spontaneous type 1 and type 2 Brugada patterns and QT disorders in spanish population older than forty years

Abstrac

Relaciones de la inteligencia emocional, burnout y compromiso académico con el rendimiento escolar de estudiantes adolescentes

Objetivo: La finalidad de la presente investigación fue la de analizar las relaciones entre los constructos de la inteligencia emocional, el burnout, el engagement académico y el rendimiento escolar en 1756 estudiantes en etapa Secundaria de 9 centros educativos. Materiales y métodos: los instrumentos utilizados para dicho trabajo fueron las versiones traducidas al castellano del Traid Meta-Mood Scale-24 (TMMS-24), el Maslach Burnout Inventory–Student Survey (MBI-SS) y Utrecht Work Engagement Scale–Student (UWES-S). Por su parte, el rendimiento escolar se midió por medio de la nota media del alumnado. Resultados: los resultados arrojaron relaciones positivas de las variables más autodeterminadas como resultan la inteligencia emocional y el engagement académico con el rendimiento escolar en un claro patrón de conductas más adaptativas. Por otro lado, puntuaciones más bajas en inteligencia emocional y burnout académico correlacionaron con menores puntuaciones de rendimiento escolar. Conclusiones: se desprende la importancia de la promoción de variables emocionales en clase para facilitar comportamientos positivos y autodeterminados que faciliten el rendimiento del alumnado así como la prevención del burnout potenciando el desarrollo educativo de los mismos. Objective: the aim of this research was to analyze the relationship between constructs of emotional intelligence, burnout, academic engagement and school performance in 1756 students in Secondary stage of 9 highschools. Materials and methods: the instruments used for this research were the spanish translated versions of Traid Meta-Mood Scale-24 (TMMS-24), the Maslach Burnout Inventory-Student Survey (MBI-SS) and Utrecht Work Engagement Scale-Student (UWES-S). On the other hand, the school performance was measured by means of the average mark of the students. Results: the results showed positive relationships of the most self-determined variables such as emotional intelligence and academic engagement with school performance in a clear pattern of more adaptive behaviors. On the other hand, lower scores in emotional intelligence and academic burnout correlated with lower school performance scores. Conclusions: the importance of the promotion of emotional variables in class to facilitate positive and self-determined behaviors that facilitate the performance of students as well as the prevention of burnout enhancing their educational development

Multidimensional continued fractions, dynamical renormalization and KAM theory

The disadvantage of `traditional' multidimensional continued fraction algorithms is that it is not known whether they provide simultaneous rational approximations for generic vectors. Following ideas of Dani, Lagarias and Kleinbock-Margulis we describe a simple algorithm based on the dynamics of flows on the homogeneous space SL(2,Z)\SL(2,R) (the space of lattices of covolume one) that indeed yields best possible approximations to any irrational vector. The algorithm is ideally suited for a number of dynamical applications that involve small divisor problems. We explicitely construct renormalization schemes for (a) the linearization of vector fields on tori of arbitrary dimension and (b) the construction of invariant tori for Hamiltonian systems.Comment: 51 page

Interleukin-15-stimulated natural killer cells clear HIV-1-infected cells following latency reversal ex vivo

Current efforts toward human immunodeficiency virus (HIV) eradication include approaches to augment immune recognition and elimination of persistently infected cells following latency reversal. Natural killer (NK) cells, the main effectors of the innate immune system, recognize and clear targets using different mechanisms than CD8+ T cells, offering an alternative or complementary approach for HIV clearance strategies. We assessed the impact of interleukin 15 (IL-15) treatment on NK cell function and the potential for stimulated NK cells to clear the HIV reservoir. We measured NK cell receptor expression, antibody-dependent cell-mediated cytotoxicity (ADCC), cytotoxicity, interferon gamma (IFN-γ) production, and antiviral activity in autologous HIV replication systems. All NK cell functions were uniformly improved by IL-15, and, more importantly, IL-15-treated NK cells were able to clear latently HIV-infected cells after exposure to vorinostat, a clinically relevant latency-reversing agent. We also demonstrate that NK cells from HIV-infected individuals aviremic on antiretroviral therapy can be efficiently stimulated with IL-15. Our work opens a promising line of investigation leading to future immunotherapies to clear persistent HIV infection using NK cells

An approximate renormalization-group transformation for Hamiltonian systems with three degrees of freedom

We construct an approximate renormalization transformation that combines Kolmogorov-Arnold-Moser (KAM)and renormalization-group techniques, to analyze instabilities in Hamiltonian systems with three degrees of freedom. This scheme is implemented both for isoenergetically nondegenerate and for degenerate Hamiltonians. For the spiral mean frequency vector, we find numerically that the iterations of the transformation on nondegenerate Hamiltonians tend to degenerate ones on the critical surface. As a consequence, isoenergetically degenerate and nondegenerate Hamiltonians belong to the same universality class, and thus the corresponding critical invariant tori have the same type of scaling properties. We numerically investigate the structure of the attracting set on the critical surface and find that it is a strange nonchaotic attractor. We compute exponents that characterize its universality class.Comment: 10 pages typeset using REVTeX, 7 PS figure

DSS for optimum ventilation, thermal storage & CO2 management for different climates & available sustainable energy sources

The EUPHOROS project is co-funded by the European Commission, Directorate General for Research, within the 7th Framework Programme of RTD, Theme 2 – Biotechnology, Agriculture & Food, contract 211457. The views and opinions expressed in this Deliverable are purely those of the writers and may not in any circumstances be regarded as stating an official position of the European Commission. This Deliverable 5 Annex is the latest updated version in September 2011

Safety study of transcranial static magnetic field stimulation (tSMS) of the human cortex

Transcranial static magnetic field stimulation (tSMS) in humans reduces cortical excitability. Objective: The objective of this study was to determine if prolonged tSMS (2 h) could be delivered safely in humans. Safety limits for this technique have not been described. Methods: tSMS was applied for 2 h with a cylindric magnet on the occiput of 17 healthy subjects. We assessed tSMS-related safety aspects at tissue level by measuring levels of neuron-specific enolase (NSE,a marker of neuronal damage) and S100 (a marker of glial reactivity and damage). We also included an evaluation of cognitive side effects by using a battery of visuomotor and cognitive tests. Results: tSMS did not induce any significant increase in NSE or S100. No cognitive alteration was detected. Conclusions: Our data indicate that the application of tSMS is safe in healthy human subjects, at least within these parameter