Bounds for the zeros of unilateral octonionic polynomials

In the present work it is proved that the zeros of a unilateral octo- nionic polynomial belong to the conjugacy classes of the latent roots of an appropriate lambda-matrix. This allows the use of matricial norms, and matrix norms in particular, to obtain upper and lower bounds for the zeros of unilateral octonionic polynomials. Some results valid for complex and/or matrix polynomials are extended to octonionic polyno- mials.R. Serˆodio and P. D. Beites were supported by FCT (Funda¸c˜ao para a Ciˆencia e a Tecnologia, Portugal), project UIDB/00212/2020 of CMA-UBI (Centro de Matem´atica e Aplica¸c˜oes da Universidade da Beira Interior). P. D. Beites was also supported by MINECO (Ministerio de Asuntos Econ´omicos y Transformaci´on Digital, Spain), project MTM2017-83506-C2-2-P. The authors would like to thank Maria Helena Serˆodio and Mary Garfield for clarifying some language queries.info:eu-repo/semantics/publishedVersio

Spanish immigration and asylum policy and regulations: inaction or low profile?

El balance de la actividad normativa a nivel de España durante el período comprendido en este anuario (enero de 2016-junio de 2017) resulta muy limitado; apenas hay iniciativa normativa alguna y el Gobierno ha adoptado un perfil más bajo incluso que en años anteriores, que ya se caracterizaba por un enfoque en el que predominaba la gestión, muy centrado en el programa de reubicación de refugiados que, sin embargo, arroja resultados decepcionantes. La acción de los tribunales cobra en este contexto cierto protagonismo, con sentencias relevantes como la que avala la exclusión sanitaria de los extranjeros irregulares, pero también las que condenan el uso de las devoluciones en caliente o las expulsiones sin valorar la reagrupación familiar, entre otras. When examined, regulatory activity at national level during the period covered by this annual (January 2016 to June 2017) turns out to be very limited; there is hardly any regulatory initiative at all and the government has kept an even lower profile that in previous years, which were characterised by a focus on management with the refugee relocation programme at the centre, and the results of which nevertheless proved to be disappointing. In this context, the activity of the courts has taken a degree of centrality, with significant rulings such as the endorsement of the exclusion of irregular non-nationals from healthcare, but also those condemning the use of forced expulsion without evaluating family reunification, among others. 

Large deformation frictional contact analysis with immersed boundary method

[EN] This paper proposes a method of solving 3D large deformation frictional contact problems with the Cartesian Grid Finite Element Method. A stabilized augmented Lagrangian contact formulation is developed using a smooth stress field as stabilizing term, calculated by Zienckiewicz and Zhu Superconvergent Patch Recovery. The parametric definition of the CAD surfaces (usually NURBS) is considered in the definition of the contact kinematics in order to obtain an enhanced measure of the contact gap. The numerical examples show the performance of the method.The authors wish to thank the Spanish Ministerio de Economia y Competitividad the Generalitat Valenciana and the Universitat Politecnica de Valencia for their financial support received through the projects DPI2013-46317-R, Prometeo 2016/007 and the FPI2015 program.Navarro-Jiménez, J.; Tur Valiente, M.; Albelda Vitoria, J.; Ródenas, JJ. (2018). Large deformation frictional contact analysis with immersed boundary method. 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Math Comput Model 28(4–8):263–271. https://doi.org/10.1016/S0895-7177(98)00121-6De Lorenzis L, Wriggers P, Zavarise G (2012) A mortar formulation for 3D large deformation contact using NURBS-based isogeometric analysis and the augmented Lagrangian method. Comput Mech 49(1):1–20. https://doi.org/10.1007/s00466-011-0623-4Dittmann M, Franke M, Temizer I, Hesch C (2014) Isogeometric Analysis and thermomechanical Mortar contact problems. Comput Methods Appl Mech Eng 274:192–212. https://doi.org/10.1016/j.cma.2014.02.012Dolbow J, Moës N, Belytschko T (2001) An extended finite element method for modeling crack growth with frictional contact. Comput Methods Appl Mech Eng 190:6825–6846. https://doi.org/10.1016/S0045-7825(01)00260-2Dolbow JE, Devan a (2004) Enrichment of enhanced assumed strain approximations for representing strong discontinuities: addressing volumetric incompressibility and the discontinuous patch test. Int J Numer Methods Eng 59(1):47–67. https://doi.org/10.1002/nme.862Fischer KA, Wriggers P (2006) Mortar based frictional contact formulation for higher order interpolations using the moving friction cone. Comput Methods Appl Mech Eng 195(37–40):5020–5036. https://doi.org/10.1016/j.cma.2005.09.025Giovannelli L, Ródenas J, Navarro-Jiménez J, Tur M (2017) Direct medical image-based Finite Element modelling for patient-specific simulation of future implants. Finite Elem Anal Des. https://doi.org/10.1016/j.finel.2017.07.010Gitterle M, Popp A, Gee MW, Wall WA (2010) Finite deformation frictional mortar contact using a semi-smooth Newton method with consistent linearization. Int J Numer Methods Eng. https://doi.org/10.1002/nme.2907Hammer ME (2013) Frictional mortar contact for finite deformation problems with synthetic contact kinematics. Comput Mech 51(6):975–998. https://doi.org/10.1007/s00466-012-0780-0Hansbo P, Rashid A, Salomonsson K (2015) Least-squares stabilized augmented Lagrangian multiplier method for elastic contact. Finite Elem Anal Des 116:32–37. https://doi.org/10.1016/j.finel.2016.03.005Haslinger J, Renard Y (2009) A new fictitious domain approach inspired by the extended finite element method. SIAM J Numer Anal 47(2):1474–1499. https://doi.org/10.1137/070704435Hautefeuille M, Annavarapu C, Dolbow JE (2012) Robust imposition of Dirichlet boundary conditions on embedded surfaces. Int J Numer Methods Eng 90:40–64. https://doi.org/10.1002/nme.3306Heintz P, Hansbo P (2006) Stabilized Lagrange multiplier methods for bilateral elastic contact with friction. Comput Methods Appl Mech Eng 195(33–36):4323–4333. https://doi.org/10.1016/j.cma.2005.09.008Hughes T, Cottrell J, Bazilevs Y (2005) Isogeometric analysis: CAD, finite elements, NURBS, exact geometry and mesh refinement. Comput Methods Appl Mech Eng 194(39–41):4135–4195. https://doi.org/10.1016/j.cma.2004.10.008Laursen T (2003) Computational contact and impact mechanics: fundamentals of modelling interfacial phenomena in nonlinear finite element analysis. Springer, BerlinLiu F, Borja RI (2008) A contact algorithm for frictional crack propagation with the extended finite element method. Int J Numer Methods Eng 76(June):1489–1512. https://doi.org/10.1002/nme.2376Liu F, Borja RI (2010) Stabilized low-order finite elements for frictional contact with the extended finite element method. Comput Methods Appl Mech Eng 199(37–40):2456–2471. https://doi.org/10.1016/j.cma.2010.03.030Marco O, Sevilla R, Zhang Y, Ródenas JJ, Tur M (2015) Exact 3D boundary representation in finite element analysis based on Cartesian grids independent of the geometry. Int J Numer Methods Eng 103(6):445–468. https://doi.org/10.1002/nme.4914Nadal E, Ródenas JJ, Albelda J, Tur M, Tarancón JE, Fuenmayor FJ (2013) Efficient finite element methodology based on cartesian grids: application to structural shape optimization. Abstr Appl Anal 2013:1–19. https://doi.org/10.1155/2013/953786Neto D, Oliveira M, Menezes L, Alves J (2016) A contact smoothing method for arbitrary surface meshes using nagata patches. Comput Methods Appl Mech Eng 299:283–315. https://doi.org/10.1016/j.cma.2015.11.011Nistor I, Guiton MLE, Massin P, Moës N, Géniaut S (2009) An X-FEM approach for large sliding contact along discontinuities. Int J Numer Methods Eng 78:1407–1435. https://doi.org/10.1002/nme.2532Oliver J, Hartmann S, Cante JC, Weyler R, Hernández JA (2009) A contact domain method for large deformation frictional contact problems. Part 1: theoretical basis. 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Enseñanza musical y aprendizaje instrumental en personas con síndrome de Down, parálisis cerebral, retraso mental y autismo : Un programa de intervención

Desarrollar la habilidad de crear y aplicar todo tipo de elementos lúdicos para fomentar en los alumnas y alumnos la: - Apertura de canales de comunicación y expresión. - Participación y relación social. - Relación y el afecto familiar. - Autoestima (confianza, seguridad, desinhibición). - Creatividad, imaginación y expresividad . Favorecer y activar en las/os alumnas/os - Destrezas motrices: Equilibrio, reflejos, agilidad, rapidez. - Psicomotricidad global. - Expresión corporal. . Estimular las capacidades de: - Atención, memoria, concentración, abstracción, asociación y disociación. - Percepción a través de los sentidos.Eje: Educación especialRed de Universidades con Carreras en Informática (RedUNCI

Educación musical y desarrollo psicolingüístico de personas con necesidades educativas especiales

Educación musical y desarrollo psicolingüístico de personas con necesidades educativas especiale

Enseñanza musical y aprendizaje instrumental en personas con síndrome de Down, parálisis cerebral, retraso mental y autismo : Un programa de intervención

Desarrollar la habilidad de crear y aplicar todo tipo de elementos lúdicos para fomentar en los alumnas y alumnos la: - Apertura de canales de comunicación y expresión. - Participación y relación social. - Relación y el afecto familiar. - Autoestima (confianza, seguridad, desinhibición). - Creatividad, imaginación y expresividad . Favorecer y activar en las/os alumnas/os - Destrezas motrices: Equilibrio, reflejos, agilidad, rapidez. - Psicomotricidad global. - Expresión corporal. . Estimular las capacidades de: - Atención, memoria, concentración, abstracción, asociación y disociación. - Percepción a través de los sentidos.Eje: Educación especialRed de Universidades con Carreras en Informática (RedUNCI

Self-efficacy in first-year university students: a descriptive study

The study and analysis of the self-efficacy beliefs of students has become an important line of educational research. The purpose of this study, conducted at Mondragon University (Spain), is to explore the different perceptions concerning the creative and entrepreneurial self-efficacy of students on their entrance to university. Results revealed clear patterns with regards to discipline and gender. Students commencing their degrees in social sciences show lower creative and entrepreneurial self-efficacy perceptions than their peers in other disciplines. Women show lower scores than men across different disciplines with the exception of women commencing engineering studies. Self-efficacy has been related to student motivation and learning and has been found influential in the choice of the professional career. The high significance of this construct in education makes the results of this study have clear implications for the development of learning environments that address the differences found between gender and disciplines. Directions for future research are also indicated

Imposing Dirichlet boundary conditions in hierarchical Cartesian meshes by means of stabilized Lagrange multipliers

This is the pre-peer reviewed version of the following article: Tur, M., Albelda, J., Nadal, E. and Ródenas, J. J. (2014), Imposing Dirichlet boundary conditions in hierarchical Cartesian meshes by means of stabilized Lagrange multipliers. Int. J. Numer. Meth. Engng, 98: 399–417, which has been published in final form at http://dx.doi.org/10.1002/nme.4629 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.[EN] The use of Cartesian meshes independent of the geometry has some advantages over the traditional meshes used in the finite element method. The main advantage is that their use together with an appropriate hierarchical data structure reduces the computational cost of the finite element analysis. This improvement is based on the substitution of the traditional mesh generation process by an optimized procedure for intersecting the Cartesian mesh with the boundary of the domain and the use efficient solvers based on the hierarchical data structure. One major difficulty associated to the use of Cartesian grids is the fact that the mesh nodes do not, in general, lie over the boundary of the domain, increasing the difficulty to impose Dirichlet boundary conditions. In this paper, Dirichlet boundary conditions are imposed by means of the Lagrange multipliers technique. A new functional has been added to the initial formulation of the problem that has the effect of stabilizing the problem. The technique here presented allows for a simple definition of the Lagrange multipliers field that even allow us to directly condense the degrees of freedom of the Lagrange multipliers at element level.The authors acknowledge the financial support received from the research project DPI2010-20542 of the Ministerio de Economia y Competitividad. Also, we appreciated the financial support of the FPU program (AP2008-01086) of the Universitat Politecnica de Valencia and the Generalitat Valenciana (PROMETEO/2012/023). The authors are also grateful for the support of the Framework Program 7 Initial Training Network Funding under grant number 289361 'Integrating Numerical Simulation and Geometric Design Technology (INSIST)'.Tur Valiente, M.; Albelda Vitoria, J.; Nadal Soriano, E.; Ródenas García, JJ. (2014). Imposing Dirichlet boundary conditions in hierarchical Cartesian meshes by means of stabilized Lagrange multipliers. International Journal for Numerical Methods in Engineering. 98(6):399-417. https://doi.org/10.1002/nme.462939941798