86 research outputs found
Quercomys bijmaigen. nov. sp. nov. (Gliridae, Rodentia, Mammalia) del Transito Oligoceno-Mioceno espanol
Quercomys bijmai gen. nov. sp. nov., a new dormouse of the subfamily Myomiminae, is described from the Oligocene/Miocene Boundary Interval of Santa Cilia (Huesca), Quel-1 and Fuenmayor-2 (La Rioja).
Quercomys gen. nov. is characterized by its medium size, its hypsodont teeth, and its simple dental pattero. It is related to other genera, like Praearmantomys, Armantomys or Pseudodryomys, and its appearance is at a moment of high diversity of the family.Se describe Quercomys bijmai gen. nov. sp. nov. (Gliridae, Rodentia) del Tránsito OligocenoMioceno, de Santa Cilia (Huesca), Quel-1 y Fuenmayor-2 (La Rioja).
Quercomys gen. nov. se caracteriza por sus dientes hipsodontos, talla media y modelo dental simple. Está relacionado con otros géneros como Praearmantomys, Armantomys o Pseudodryomys, y aparece en un momento de alta diversidad en la familia
First-order phase transition in a 2D random-field Ising model with conflicting dynamics
The effects of locally random magnetic fields are considered in a
nonequilibrium Ising model defined on a square lattice with nearest-neighbors
interactions. In order to generate the random magnetic fields, we have
considered random variables that change randomly with time according to
a double-gaussian probability distribution, which consists of two single
gaussian distributions, centered at and , with the same width
. This distribution is very general, and can recover in appropriate
limits the bimodal distribution () and the single gaussian one
(). We performed Monte Carlo simulations in lattices with linear sizes in
the range . The system exhibits ferromagnetic and paramagnetic
steady states. Our results suggest the occurence of first-order phase
transitions between the above-mentioned phases at low temperatures and large
random-field intensities , for some small values of the width .
By means of finite size scaling, we estimate the critical exponents in the
low-field region, where we have continuous phase transitions. In addition, we
show a sketch of the phase diagram of the model for some values of .Comment: 13 pages, 9 figures, accepted for publication in JSTA
Ambiente sedimentario y edad de la unidad superior de brechas de la Cuenca de Quesa (provincia de Valencia)
The miocene deposits of the Quesa basin (Betic foreland) outcrops in the central part of the Valencia province (Spain). Quesa basin is a subsiding hanging-wall basin related to an ENE-WSW listric fault system. The deposits of this basin are formed by a 440 metres thick sequence of red clays, containing few intercalations of sandstones and micritic white limestones, and breccias. The upper 70 metres of this sequence is a wedge-shaped unit composed by breccias containing megablocks, wich interfinger with tabular limestones towards the central part of the basin. The breccias are foot-wall derived debris fiow deposits formed during normal faulting. A mammal site close to the base of the breccias (Quesa 2), has yielded a fossil micrommamal association of Middle to Upper Aragonian age. This allow us to consider as Middle Miocene the sediments and tectonic events in Quesa Basin.La cuenca miocena de Quesa está situada en la parte central de la provincia de Valencia. Es una cuenca continental del antepaís bético, con una estructura de semigraben, controlada por un sistema de fallas lístricas de orientación ENE-WSW. La sucesión de los depósitos de esta cuenca tiene 440 metros de potencia. Está formada por brechas y arcillas rojas conteniendo intercalaciones de areniscas, conglomerados y calizas. Las brechas, que incluyen grandes bloques y olistolitos, forman los 70 metros superiores de la serie, en el sector oriental de la cuenca. Constituyen un cuerpo, en forma de cuña, que se interdigita hacia el centro de la cuenca con calizas blancas laminadas. Estas brechas son depósitos de coluviones formados por mecanismos de «debris-fiow» en la base de un escarpe de falla. Han podido ser datadas como Aragoniense medio-superior gracias a un yacimiento de micromamíferos situado en su base. Esto nos permite considerar al conjunto de los depósitos y al control ejercido por la fractura, de una edad Mioceno medio como más reciente
A Study of Two-Temperature Non-Equilibrium Ising Models: Critical Behavior and Universality
We study a class of 2D non-equilibrium Ising models based on competing
dynamics induced by contact with heat-baths at two different temperatures. We
make a comparative study of the non-equilibrium versions of Metropolis, heat
bath/Glauber and Swendsen-Wang dynamics and focus on their critical behavior in
order to understand their universality classes. We present strong evidence that
some of these dynamics have the same critical exponents and belong to the same
universality class as the equilibrium 2D Ising model. We show that the bond
version of the Swendsen-Wang update algorithm can be mapped into an equilibrium
model at an effective temperature.Comment: 12 pages of LaTeX plus 18 pages of postscript figures in a uuencoded
file (608k
Non-equilibrium phase transitions in lattice systems with random-field competing kinetics: mean-field theory
Geodesic flows on Riemannian g.o. spaces
We prove the integrability of geodesic flows on the Riemannian g.o. spaces of
compact Lie groups, as well as on a related class of Riemannian homogeneous
spaces having an additional principal bundle structure.Comment: 12 pages, minor corrections, final versio
Pinturas murales de la casa de Ariadna (Pompeya, Italia): un estudio multidisciplinar de su estado actual enfocado a una futura restauración y conservación preventiva
[EN] This paper deals with the development of a multidisciplinary study on the current state of conservation of Ariadne’s house (Pompeii, Italy), a domus of great archaeological value. The aim of this study is to undertake the preventive conservation actions required and increase the knowledge about its conservation and to generate discussions and points of view for a future restoration. Environmental studies, electromagnetic radiation measurements, study of materials and a photographical study were carried out. Those studies revealed that the rooftops covering the analyzed rooms resulting in adverse weather conditions causing grave damage to the conservation of the wall paintings. Thus, between 2009-2010 the rooftops were changed and new environmental studies were conducted. Studies of materials showed that the paintings match in execution and composition with those reported by other authors. The salts from modern mortars from previous restorations were affecting frescoes, also it is described a thin grayish surface layer from environmental contaminants.[ES] Este trabajo desarrolla un estudio multidisciplinar sobre el actual estado de conservación de la casa de Ariadna (Pompeya, Italia), domus de gran valor arqueológico. El objetivo es aumentar el conocimiento del estado actual de conservación de la casa para la discusión de una futura restauración. Para ello se realizaron estudios ambientales, mediciones de radiación electromagnética, estudio de materiales y un estudio fotográfico. Los estudios revelaron que los tejados que cubrían las salas analizadas estaban originando unas condiciones climatológicas adversas que se traducían en un grave daño para la conservación de las pinturas murales. Entre 2009-2010 se cambiaron las cubiertas y los estudios ambientales fueron repetidos. Los estudios de materiales demostraron que las pinturas coinciden en ejecución y composición con las señaladas por otros autores. Las sales procedentes de morteros modernos de anteriores restauraciones afectaban a las pinturas, también se describe una fina capa superficial de tonalidad grisácea procedente de contaminantes ambientales.This work was partially supported by the Spanish "Ministerio de Ciencia e Innovacion" under projects HAR2010-21944-C02-01 and HAR2010-21944-C02-02. The authors are grateful to J. Minguez for his English grammar corrections.Pérez García, MDC.; García Diego, FJ.; Merello Giménez, P.; D'antoni, P.; Fernández Navajas, A.; Ribera I Lacomba, A.; Ferrazza, L.... (2013). Ariadne's house (Pompeii, Italy) wall paintings: A multidisciplinary study of its present state focused on a future restoration and preventive conservation. Materiales de Construcción. 63(311):449-467. https://doi.org/10.3989/mc.2012.00812S4494676331
Integral strategy to supportive care in breast cancer survivors through occupational therapy and a m-health system: design of a randomized clinical trial
Background: Technological support using e-health mobile applications (m-health) is a promising strategy to improve
the adherence to healthy lifestyles in breast cancer survivors (excess in energy intake or low physical activity are
determinants of the risk of recurrence, second cancers and cancer mortality). Moreover, cancer rehabilitation
programs supervised by health professionals are needed due to the inherent characteristics of these breast cancer
patients. Our main objective is to compare the clinical efficacy of a m-health lifestyle intervention system alone versus
an integral strategy to improve Quality of Life in breast cancer survivors.
Methods: This therapeutic superiority study will use a two-arm, assessor blinded parallel RCT design. Women will be
eligible if: they are diagnosed of stage I, II or III-A breast cancer; are between 25 and 75 years old; have a Body Mass
Index > 25 kg/m2; they have basic ability to use mobile apps; they had completed adjuvant therapy except for
hormone therapy; and they have some functional shoulder limitations. Participants will be randomized to one of
the following groups: integral group will use a mobile application (BENECA APP) and will receive a face-to-face
rehabilitation (8-weeks); m-health group will use the BENECA app for 2-months and will received usual care
information. Study endpoints will be assessed after 8 weeks and 6 months. The primary outcome will be Quality
of Life measured by The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core
and breast module. The secondary outcomes: body composition; upper-body functionality (handgrip, Disability of the
Arm, Shoulder and Hand questionnaire, goniometry); cognitive function (Wechsler Adult Intelligence Scale, Trail Making
Test); anxiety and depression (Hospital Anxiety and Depression Scale); physical fitness (Short version of the Minnesota
Leisure Time Physical Activity Questionnaire, Self-Efficacy Scale for Physical Activity); accelerometry and lymphedema.
Discussion: This study has been designed to seek to address the new needs for support and treatment of breast cancer
survivors, reflecting the emerging need to merge new low cost treatment options with much-needed involvement of
health professionals in this type of patients.
Trial registration: ClinicalTrials.gov Identifier: NCT02817724 (date of registration: 22/06/2016).The study was funded by the Spanish Ministry of Economy and Competitiveness
(Plan Estatal de I + D + I 2013-2016), Fondo de Investigación Sanitaria del Instituto
de Salud Carlos III (PI14/01627), Fondos Estructurales de la Unión Europea (FEDER)
and by the Spanish Ministry of Education (FPU14/01069). This is part of a Ph.D.
Thesis conducted in the Clinical Medicine and Public Health Doctoral Studies of
the University of Granada, Spain
Revisiting Strategic versus Non-Strategic Cooperation
We use a novel experimental design to disentangle strategically- and non-strategically-motivated cooperation. By using contingent responses in a repeated sequential prisoners’ dilemma with a known probabilistic end, we differentiate end-game behavior from continuation behavior within individuals while controlling for expectations. This design allows us to determine the extent to which strategically-cooperating individuals are responsible for the so-called endgame effect. Experiments with two different subject pools indicate that the most common motive for cooperation in repeated games is strategic and that the extent to which endgame effects are driven by strategically-cooperating individuals depends on the profitability of cooperation.
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