Front spreading in population dynamic models. Theory and application to the Neolithic transition

This thesis presents population dynamics models that can be applied to predict the rate of spread of the Neolithic transition (change from hunter-gathering to farming economics) across the European continent, which took place about 9000 to 5000 years ago. The first models in this thesis provide predictions at a continental scale. We develop population dynamics models with explicit kernels and apply realistic data. We also derive a new time-delayed reaction-diffusion equation which yields speeds about a 10% slower than previous models. We also deal with a regional variability: the slowdown of the Neolithic front when reaching the North of Europe. We develop simple reaction-diffusion models that can predict the measured speeds in terms of the non-homogeneous distribution of pre-Neolithic (Mesolithic) population in Europe, which were present in higher densities at the North of the continent. Such models can explain the observed speeds.

Completeness for coherent states in a magnetic-solenoid field

This paper completes our study of coherent states in the so-called magnetic-solenoid field (a collinear combination of a constant uniform magnetic field and Aharonov-Bohm solenoid field) presented in Bagrov et al (2010 J. Phys. A: Math. Theor. 43 354016, 2011 J. Phys. A: Math. Theor. 44 055301). Here, we succeeded in proving nontrivial completeness relations for non-relativistic and relativistic coherent states in such a field. In addition, we solve here the relevant Stieltjes moment problem and present a comparative analysis of our coherent states and the well-known, in the case of pure uniform magnetic field, Malkin-Man'ko coherent states.

Coherent states and related quantizations for unbounded motions

We discuss the construction of coherent states (CS) for systems with continuous spectra. First, we propose to adopt the Malkin-Manko approach, developed for systems with discrete spectra, to the case under consideration. Following this approach, we consider two examples, a free particle and a particle in a linear potential. Second, we generalize the approach of action-angle CS to systems with continuous spectra. In the first approach we start with a well-defined quantum formulation (canonical quantization) of a physical system and the construction of CS follows from such a quantization. In the second approach, the quantization procedure is inherent to the CS construction itself.

Observation of Direct-Photon Collective Flow in Au plus Au Collisions at root s(NN)=200 GeV

The second Fourier component v(2) of the azimuthal anisotropy with respect to the reaction plane is measured for direct photons at midrapidity and transverse momentum (p(T)) of 1-12 GeV/c in Au + Au collisions at root s(NN) = 200 GeV. Previous measurements of this quantity for hadrons with p(T) < 6 GeV/c indicate that the medium behaves like a nearly perfect fluid, while for p(T) > 6 GeV/c a reduced anisotropy is interpreted in terms of a path-length dependence for parton energy loss. In this measurement with the PHENIX detector at the Relativistic Heavy Ion Collider we find that for p(T) > 4 GeV/c the anisotropy for direct photons is consistent with zero, which is as expected if the dominant source of direct photons is initial hard scattering. However, in the p(T) < 4 GeV/c region dominated by thermal photons, we find a substantial direct-photon v(2) comparable to that of hadrons, whereas model calculations for thermal photons in this kinematic region underpredict the observed v(2).

On the Origin of the Trigger-Angle Dependence of the Ridge Structure

The origin of the trigger-angle dependence of the ridge structure in two-hadron long-range correlations, as observed at RHIC, is discussed as due to an interplay between the elliptic flow caused by the initial state global geometry and flow produced by fluctuations.

STRUCTURE OF THE ELECTROMAGNETIC FIELD ALLOWING EXACT SOLUTION OF THE SCHRODINGER EQUATION IN SUPERPOSITION WITH AN AHARONOV-BOHM FIELD

A charged particle is considered in a complex external electromagnetic field. The field is a superposition of an Aharonov-Bohm field and some additional field. Here we describe all additional fields known up to the present time that allow exact solution of the Schrodinger equation in a complex field.

Cold-Nuclear-Matter Effects on Heavy-Quark Production in d+Au Collisions at root S-NN=200 GeV

The PHENIX experiment has measured electrons and positrons at midrapidity from the decays of hadrons containing charm and bottom quarks produced in d + Au and p + p collisions at root S-NN = 200 GeV in the transverse-momentum range 0.85 <= p(T)(e) <= 8.5 GeV/c. In central d + Au collisions, the nuclear modification factor R-dA at 1.5 < p(T) < 5 GeV/c displays evidence of enhancement of these electrons, relative to those produced in p + p collisions, and shows that the mass-dependent Cronin enhancement observed at the Relativistic Heavy Ion Collider extends to the heavy D meson family. A comparison with the neutral-pion data suggests that the difference in cold-nuclear-matter effects on light- and heavy-flavor mesons could contribute to the observed differences between the pi(0) and heavy-flavor-electron nuclear modification factors R-AA. DOI: 10.1103/PhysRevLett.109.242301

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations of root s(NN) 200 GeV Au+Au Collisions

We simulate top-energy Au + Au collisions using ideal hydrodynamics in order to make the first comparison to the complete set of midrapidity flow measurements made by the PHENIX Collaboration. A simultaneous calculation of nu(2), nu(3), nu(4), and the first event-by-event calculation of quadrangular flow defined with respect to the nu(2) event plane (nu(4){Psi(2)}) gives good agreement with measured values, including the dependence on both transverse momentum and centrality. This provides confirmation that the collision system is indeed well described as a quark-gluon plasma with an extremely small viscosity and that correlations are dominantly generated from collective effects. In addition, we present a prediction for nu(5).

Temporal evolution of tubular initial conditions and their influence on two-particle correlations in relativistic nuclear collisions

Relativistic nuclear collisions data on two-particle correlations exhibit structures as function of relative azimuthal angle and rapidity. A unified description of these near-side and away-side structures is proposed for low to moderate transverse momentum. It is based on the combined effect of tubular initial conditions and hydrodynamical expansion. Contrary to expectations, the hydrodynamics solution shows that the high-energy density tubes (leftover from the initial particle interactions) give rise to particle emission in two directions and this is what leads to the various structures. This description is sensitive to some of the initial tube parameters and may provide a probe of the strong interaction. This explanation is compared with an alternative one where some triangularity in the initial conditions is assumed. A possible experimental test is suggested. (C) 2012 Elsevier B.V. All rights reserved.

Activitat física per a gent gran : una perspectiva multidisciplinar. 'Actividad física para personas mayores : una perspectiva multidisciplinar'.

Resumen tomado de la publicación

Recreação hospitalar: o papel do profissional de educação física na equipe multidisciplinar

This qualitative study aimed to investigate the methodological perspective, the contents, possible outcomes and the role of Physical Education professionals in multidisciplinary staff of Recreation in hospitals. The study consisted of a survey applied to 20 adults of both sexes, volunteers, working in multidisciplinary team at a hospital in Leme, SP. Data were descriptively analyzed through content analysis technique, indicating that the time of engagement of that professional in that team was on average 12.8 months. Physical Education Professionals act mainly with joy faced the patients, making them well accepted. In relation to the contents used by these professionals, toys were the most mentioned, followed by books, puppets, role play and music. The team noticed some positive changes in patients after Physical Education Professional performances, and his engagement in the health team was considered very important, highlighting the urgency of new shares to enlarge this Professional participation in health multidisciplinary teams.

Programa multidisciplinar para promoção da saúde envolvendo atividade física supervisionada: ações do PAFIPNES na atenção à saúde de mulheres em uma Unidade Básica de Saúde de São José do Rio Pardo-SP

The Physical Activity Program for Persons with Special Needs (PAFIPNES) is a extension project developed since 2002, and operates in secondary care to the health of obese, diabetic and hypertensive women. This offer exercise programs supervised by physical education professionals, together with a multidisciplinary health team that works in a Health Basic Unit of São José do Rio Pardo/SP. Their actions included interventions to improve general health status and stimulate the adoption of a more active lifestyle. In addition, the PAFIPNES serves as an internship site for scholars of Physical Education can acquire knowledge and skills that enable them to act on basic health care of patients with Non Communicable Diseases, as mentioned above.

Determinação do teor alcoólico de vodcas: uma abordagem multidisciplinar no ensino da física, química e matemática

In this paper, it is proposed an experimental activity to be developed with high school students, addressing the concepts of density and surface tension from a multidisciplinary approach among Physics, Chemistry and Mathematics. In this proposal, students are challenged to determine the alcohol content of vodkas from intensive physical properties of liquids. Two calibration curves were obtained, one for density and another for surface tension as a function of ethanol concentration in water. The alcohol levels obtained from these properties were very close to the values given by manufacturers, due the similarity of these beverages with ethanol-water binary mixtures.

Influência de um programa de exercício na aptidão física pós-transplante hepático: o caso da polineuropatia amiloidótica familiar nas suas componentes composição corporal, capacidade funcional e função neuromuscular

Portugal é o país que mais transplantes hepáticos efectuou a nível mundial e o segundo com maior número de dadores por milhão de habitantes, com a região centro do país a liderar a doação de órgãos. Esta liderança na área da transplantação hepática contribui também para as elevadas taxas de sobrevivência destes doentes, suportada pela excelência técnica de uma equipa multidisciplinar diferenciada, complementada por recentes avanços terapêuticos. Portugal é, também a nível mundial, o país com maior número de casos de polineuropatia amiloidótica familiar (PAF), variante TTRmet30 (proteína transtirretina mutada) tipo português, diagnosticados, sendo em algumas regiões considerada como uma doença endémica. Apesar de novas terapêuticas em estudo (exemplo: Tafamidis), até à data o transplante hepático parece ser a única terapêutica com eficácia ao retardar ou mesmo na estabilização da evolução desta doença hereditária e degenerativa, progressiva e fatal no prazo de 10-15 anos após o início da sintomatologia.

El río Guadalquivir como recurso educativo para un programa multidisciplinar de intervención ambiental.

Se presenta memoria final de proyecto educativo que pretende generar una gran cantidad de actividades y plantear estrategias educativas que sean capaces de aprovechar todos y cada uno de los recursos que el río Guadalquivir ofrece, desde una perspectiva multidisciplinar e implicando a la totalidad del centro. Los objetivos: reestablecer los vínculos afectivos entre el río y la población más cercana; sensibilizar al alumnado de la conservación y mejora del medio ambiente promoviendo actitudes pro-ambientales partiendo desde su realidad más cercana -río Guadalquivir- para extrapolarlo a los demás entornos; participar dentro de la dinámica de los colectivos ciudadanos que vienen trabajando para la integración del río en la ciudad; utilizar el río como centro de interés que puede aglutinar todo un programa de actividades interdisciplinares; diseñar proyectos de actividades y realizarlos -si se obtienen los permisos necesarios- que sirvan para promocionar el río y sus márgenes. El proceso consta de varias fases: fase de sensibilización, que pretende cuestionar la imagen que el alumnado tiene sobre el río; fase de conocimiento-conceptualización, que pretende que el alumnado adquiera un conocimiento básico de todo lo relacionado con el río y su entorno; fase de producción, que pretende implicar al alumnado en el diseño de actividades culturales, físicas, deportivas, lúdicas, respetuosas y solidarias con el entorno; fase de evaluación, se realiza una evaluación de todo el proyecto en diferentes momentos. Los resultados: se percibe un cierto cambio en la percepción del alumnado con respecto al río; se ha conseguido una percepción afectiva y de interés, por parte del alumnado y profesorado, hacia el río Guadalquivir a su paso por Córdoba y su importancia y repercusión en la vida diaria y cotidiana; se ha apreciado cierto cambio positivo en la concienciación de respeto hacia el medio ambiente en la mayoría de alumnado; aglutinar al profesorado del centro para realizar actividades interdisciplinares basadas en el río Guadalquivir. Los materiales producidos: folleto explicativo para el taller de bicicletas, folleto explicativo para el taller de fotografía, fotografías realizadas por el alumnado sobre el entorno del río Guadalquivir, fichas de trabajo para el estudio básico de la calidad del agua de un río y estudio de vegetación de la ribera, entrevista estructurada a padres, madres y familiares sobre sus vivencias, recuerdos y lazos afectivos con el río, fotografías antiguas recopiladas del río Guadalquivir, composiciones escritas sobre el río por el alumnado, vídeos sobre la carrera popular, documento de trabajo para el alumnado sobre los 'Sotos de Albolafia', plano de orientación sobre el entorno del río Guadalquivir a su paso por Córdoba, acuarelas sobre el río elaboradas por el alumnado para promocionar el río, láminas de trabajo básicas sobre el ciclo integral del agua y sobre los molinos, calendario del año 2006 sobre el río Guadalquivir elaborado por el alumnado, documento de trabajo para la gymkhana, recopilación de algunos juegos populares y tradicionales, tres diálogos dramatizados con diferentes personajes y situaciones clave, guiones de trabajo para las actividades relacionadas con la música, cuaderno de campo para la ruta de senderismo, paneles en madera con ejercicios de condición física para ser colocados en el muro del río.