118 research outputs found
A generalized Holling type II model for the interaction between dextral-sinistral snails and Pareas snakes
Producción CientíficaPareatic snakes possess outstanding asymmetry in the mandibular tooth number, which has probably been caused by its evolution to improve the feeding on the predominant dextral snails. Gene mutation can generate chiral inversion on the snail body. A sinistral snail population can thrive in this ecological context. The interactions between dextral/sinistral snails and Pareas snakes are modeled in this paper by using a new generalized functional response of Holling type II. Distinct Pareas species show different bilateral asymmetry degrees. This parameter plays an essential role in our model and determines the evolution of the populations. Stability of the solutions is also analyzed for different regimes in the space of parameters.Ministerio de Economía, Industria y Competitividad (grant MTM2014-57129-C2-1-P)Junta de Castilla y Leon (grant VA057U16
Orbits in the problem of two fixed centers on the sphere
[EN] A trajectory isomorphism between the two Newtonian fixed center problem in the sphere and two associated planar two fixed center problems is constructed by performing two simultaneous gnomonic projections in S2. This isomorphism converts the original quadratures into elliptic integrals and allows the bifurcation diagram of the spherical problem to be analyzed in terms of the corresponding ones of the planar systems. The dynamics along the orbits in the different regimes for the problem in S2 is expressed in terms of Jacobi elliptic functions
Neurocognitive Impairment in Severe Mental Illness. Comparative study with Spanish Speaking Patients
Background. Serious mental illness (SMI) represents a category of psychiatric disorders characterized by specific difficulties of personal and social functioning, derived from suffering severe and persistent mental health problems. Aims. We wanted to look into differences in cognitive performance among different SMI patients. Methods. Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) screening was applied in one sample of SMI patients (n = 149) and another of healthy comparison participants (n = 35). Within the SMI sample, three different subsamples were formed: one with 97 patients with schizophrenia, a second with 29 patients with mood disorders, and a third with 23 patients with personality disorder. We performed a comparative study within and between groups. Results. Analysis of covariance was performed. Significant differences were found for cognitive functioning including attention and memory. Conclusions. RBANS can be recommended for the detection of neurocognitive deficits in psychiatric disorders, especially in Schizophrenia
Kink manifolds in a three-component scalar field theory
Preprint[EN] In this work we identify the manifold of solitary waves arising in a three-component scalar field model using the Bogomol'nyi arrangement of the energy functional. A rich structure of topological and non-topological kinks exists in the different sub-models contained in the theory. [ES] En este trabajo identificamos el colector de ondas solitarias procedentes de un modelo de campo escalar con tres componentes usando la disposición Bogomol'nyi de la energía funcional. Una estructura enriquecida de Plieges topológicos y no topológico existe en los diferentes sub-modelos contenidos en la teoría
Using Technology To Teach/Learn Mathematics, How Are We As Teachers Fostering Mathematics Education Mobility?
La Informática Industrial en las Ingenierías Industriales
El término Informática Industrial se utiliza para dar cabida a un conjunto muy diverso de disciplinas y tecnologías. El encontrar un criterio unificador que articule los diversos enfoques posibles y que, ayude tanto al docente como al alumno, en el proceso de enseñanza/aprendizaje de manera que se brinde conocimiento perdurable y al mismo tiempo actualizado, es una tarea clave. En esta contribución se discuten estas ideas relativas a la docencia de esta disciplina en las diferentes titulaciones de la Escuela de Ingenierías Industriales de la UVA, manifestando ideas de cómo ese marco conceptual puede adaptarse al contexto de las diferentes especialidades.Departamento de Ingeniería de Sistemas y Automática2018-01-0
The impact of the COVID-19 lockdown on human psychology and physical activity; a space analogue research perspective
Introduction Astronauts will encounter isolated, confined and extreme (ICE) conditions during future missions, and will have to be able to adapt. Until recently, however, few places on Earth could serve as acceptable space analogues (i.e., submarine and polar regions). The coronavirus disease-2019 (COVID-19)-related lockdowns around the globe provided a good opportunity to obtain more comprehensive datasets on the impact of prolonged isolation on human functioning in a very large sample. Methods Seven hundred forty-eight individuals (Belgium 442, Spain 183, Germany 50, Italy 50, US 23; Mean age +/- SD: 41 +/- 14 years, with an age range of 18-83 years; 66% women) filled out an online survey assessing the impact of the COVID-lockdown on psychological, exercise and general health variables a first time near the beginning of the initial lockdown (hereafter 'T1'; 24 +/- 13 days after the start of the first lockdown; i.e., 3 weeks after the start of the first lockdown) and a second time a couple of weeks thereafter (hereafter 'T2'; 17 +/- 5 days after the first online survey; i.e., 6 weeks after the start of the first lockdown). Results From T1 to T2 an improvement of subjective sleep quality was observed (P = 0.003), that was related to an increase in subjective sleep efficiency and a decrease in sleep latency and disturbance (P <= 0.013). Weekly sitting time decreased, and the weekly amount of moderate and vigorous physical activity increased from T1 to T2 (P <= 0.049). No differences from T1 to T2 were observed in terms of mood, loneliness and state anxiety. A lower amount of sitting time was significantly correlated with improved subjective sleep quality (r = 0.096, P = 0.035) and with an increased amount of moderate (r = -0.126, P = 0.005) and vigorous (r = -0.110, P = 0.015) physical activity. Conclusion Compared to 3 weeks into the first COVID-imposed lockdown, 6-weeks after the start of the first COVID-imposed lockdown, physical activity and subjective sleep scores were positively impacted. The present, large sample size study further confirms exercise as a worthwhile countermeasure to psycho-physiological deconditioning during confinement
Enfermedades psiquiátricas y trabajo. Revisión bibliográfica y jurisprudencial (Trastornos esquizofrénicos, trastorno bipolar y trastornos ansioso-depresivos)
Las enfermedades psiquiátricas en su conjunto y, algunas de ellas de forma específica, constituyen un problema de salud pública en todos los países y conllevan un coste económico asociado, tanto directo como indirecto. Pero además, cuando la persona enferma ejerce su derecho al trabajo ello comporta, en ocasiones, más allá de su diagnóstico y su tratamiento, la necesidad de tomar unas acciones en las empresas, limitantes adaptativas o restrictivas, para el trabajador afectado y la adopción de medidas socio-laborales con repercusión posterior administrativa y jurídica. Se revisarán en este trabajo las publicaciones médicas recogidas en la base de datos de referencia (Pub-Med) relativa a estas patologías, su diferenciación en cuanto a los aspectos clínico asistenciales y su comparativa con los socio-laborales. De igual forma se realiza en este trabajo una revisión del impacto de estas patologías en la base de datos jurídica (Westlaw Insignis) y su diferenciación según cada patología y área del derecho correspondiente. Sirvan los resultados para, a través del conocimiento actual de la situación, basada en estos datos, elaborar posibles estrategias preventivas de futuro ante conflictos médico legales y de nuevos enfoques más coordinados entre todos los agentes implicados.Psychiatric disorders as a whole and some of them in a specific way constitute a public health problem in all countries and entail an economic cost associated, both directly and indirectly. In addition, some issues are to be considered when the sick person exercises his right to work, beyond diagnosis and treatment of his/her disease. Companies need to take some actions whether adaptive or restrictive for the affected employee, and the adoption of socio-labor measures which will have administrative and legal impact. The medical publications listed in the reference database (Pub-Med) concerning these pathologies will be reviewed in this article with emphasis in those clinical aspects that correlate health care with socio-labor implications. Paralelly, this work reviews the impact of these diseases in the legal databases (Westlaw Insignis) and their differentiation according to each disorder and its corresponding area of the law.The conclusions of this work, through the current knowledge of the situation, will serve to develop possible preventive strategies to address future medico-legal conflicts as well as to develop more coordinated approaches among all the stakeholders
Consumo de alcohol y riesgo de accidentes de tráfico en España. Aspectos preventivos
Introducción: Las bebidas alcohólicas se consumen ampliamente en todo el mundo y también en España. Aunque la mayoría de la población adulta tiene un patrón de consumo de bajo riesgo, existen personas que presentan patrones lesivos de consumo que van desde el bebedor diario de gran cantidad, al consumo de riesgo ocasional/social. Esta situación genera problemas de seguridad vial en casi todos los países asociados a cambios en el rendimiento psicomotor del consumidor con posterior repercusión en riesgo de accidentes. Método: Para realizar esta revisión se han consultado la base de datos de la Organización Mundial de la Salud: World Health Organization. Global Information System on Alcohol and Health (GISAH) y los resultados del estudio EDADES. Se ha hecho una búsqueda bibliográfica en PubMed y otras bases de datos de referencia (Latindex, Scopus, Índice Bibliográfico Español en Ciencias de la Salud –IBECS sobre los términos de búsqueda: alcohol consumption and road traffic injuries, seleccionándose a criterio de los autores aquellos trabajos considerados más significativos). Conclusiones: Se trata de un complejo problema con repercusión individual en los afectados y trascendencia socioeconómica y en la que destaca la especial implicación en sus efectos de las personas más jóvenes, lo que requiere de un esfuerzo preventivo conjunto sanitario, social y de las Administraciones Públicas para obtener resultados en plazos lo más breves posible y reducir la mortalidad, morbilidad y limitaciones resultantes ocasionadas por la conducción bajo los efectos de las bebidas alcohólicas, con frecuencia asociados al consumo de otro tipo de drogas y aceptado cada vez más por la sociedad en actividades de ocio.Introduction: Alcoholic beverages are widely consumed around the world and also in Spain. Although most of the adult population has a pattern of low-risk drinking, there are people with harmful drinking patterns ranging from daily drinker wealth, consumption casual / social risk. This creates traffic problems in almost all countries associated with changes in psychomotor performance consumer with subsequent impact on accident risk. Methods: To perform this review we have consulted the database of the World Health Organization: World Health Organization. Global Information System on Alcohol and Health ( GISAH ) and the results of the EDADES study. It has become a literature search in PubMed and other databases of reference (Latindex Scopus Spanish Bibliographic Index of Health Sciences -IBECS about search terms: Alcohol Consumption and road traffic injuries, and have been selected by the authors tose works considered more relevants. Conclusions: This is a complex issue with individual impact on those affected and socio-economic importance and which highlights the special involvement in the effects of younger people, which requires a preventive effort overall health, social and government for results in shorter periods and may reduce mortality, morbidity and resulting limitations caused by driving under the influence of alcoholic beverages, often associated with the consumption of other drugs and increasingly accepted by society in leisure activities
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