Sharing child custody: co-parenting after divorce in Spain

La coparentalidad tras separación o ruptura conyugal en España se ha introducido desde la demanda de una neutralidad de género aunque su puesta en práctica parece invocar al ideal de la familia biparental heterosexual que requiere mantener la verdad genética, el apellido y la residencia. Los desarrollos legislativos y el ordenamiento jurídico en torno a la custodia compartida en este país mediterráneo han tenido lugar en un contexto de cambios sociales muy importantes. El propósito de esta contribución es demostrar que la reforma de la ley del divorcio asume que padre y madre comparten responsabilidades parentales de modo equitativo, sin haber considerado la prevalencia de los roles de género en la práctica del cuidado físico y la atención cotidiana. Se ha revisado la literatura sobre estudios de familia desde disciplinas como la antropología social, la sociología, la ciencia política y el derecho y se han tenido en cuenta datos socioeconómicos de fuentes primarias y secundarias.Cooperative parenting after separation and divorce in Spain has been introduced with claimed gender neutrality although its application seems to invoke the two-parent heterosexual family ideal that requires genetic truth, surname and residence to be preserved. Legislative developments and legal ordering revolving around joint physical custody and shared residence in this Mediterranean country have taken place within a context of relevant social changes. The aim of this contribution is to demonstrate that divorce law reform has assumed that father and mother share parental responsibility equally, without raising the practical issue of gender role prevalence in physical day-to-day care. Literature on family studies has been reviewed from disciplines such as social anthropology, sociology, political science and law, providing socioeconomic data from primary and secondary sources.This paper is a result of the Project entitled Parentalidades. Aproximaciones antropológicas y conexiones interdisciplinarias, funded by the Spanish Ministry of Economy and Competitiveness, Code CSO2012- 39041-C02-00 (2013-2016)

Robotic arm with ten degrees of freedom

ABSTRACT: This bachellor thesis present a matlab code that makes a robotic arm to work. Controlling the arm means that all the movements of the arm are defined. The robotic arm is ten degrees of freedom. Inside this task we are going to use the code of the optimization algorithm based on genetic algorithms and the knowledge of direct kinematics equations to get the inverse kinematics model used to control the movement of a robotic arm. With this combination we got a good inverse kinematic model of 10 D.O.F. robot mechanism.Grado en Ingeniería en Tecnologías Industriale

Ternary and quaternary oxides of Bi, Sr, and Cu

Before the discovery of superconductivity in an oxide of Bi, Sr, and Cu, the system Bi-Sr-Cu-O had not been studied, although several solid phases had been identified in the two-component regions of the ternary system Bi2O3-SrO-CuO. The oxides Sr2CuO3, SrCu2O2, SrCuO2, and Bi2CuO4 were then well known and characterized, and the phase diagram of the binary system Bi2O3 -SrO had been established in the temperature range 620 to 1000 C. Besides nine solutions of compositions Bi(2-2x) Sr(x) O(3-2x) and different symmetries, this diagram includes three definite compounds of stoichiometries Bi(2)SrO4, Bi2Sr2O5, and Bi2Sr3O6 (x = 0.50, 0.67 and 0.75 respectively), only the second of which with known unit-cell of orthorhombic symmetry, dimensions (A) a = 14.293(2), b = 7.651(2), c = 6.172(1), and z = 4. The first superconducting oxide in the system Bi-Sr-Cu-O was initially formulated as Bi2Sr2Cu2O(7+x), with an orthorhombic unit-cell of parameters (A) a = 5.32, b = 26.6, c = 48.8. In a preliminary study the same oxide was formulated with half the copper content, Bi(2)Sr(2)CuO(6+x), and indexed its reflections assuming an orthorhombic unit-cell of dimensions (A) a = 5.390(2), b = 26.973(8), c = 24.69(4). Subsequent studies by diffraction techniques have confirmed the composition 2:2:1. A new family of oxygen-deficient perovskites, was characterized, after identifying by x ray diffraction the phases present in the products of thermal treatments of about 150 mixtures of analytical grade Bi2O3, Sr(OH)2-8H2O and CuO at different molar ratios. X ray diffraction data are presented for some other oxides of Bi and Sr, as well as for various quaternary oxides, among them an oxide of Bi, Sr, and Cu

Local asymptotics of selection models

Selection models are ubiquitous in statistics. In recent years, they have regained considerable popularity as the working inferential models in many selective inference problems. In this paper, we derive an asymptotic expansion of the local likelihood ratios of selection models. We show that under mild regularity conditions, they are asymptotically equivalent to a sequence of Gaussian selection models. This generalizes the Local Asymptotic Normality framework of Le Cam (1960). Furthermore, we derive the asymptotic shape of Bayesian posterior distributions constructed from selection models, and show that they can be significantly miscalibrated in a frequentist sense.Comment: 14 pages, 1 figur

Splitting strategies for post-selection inference

We consider the problem of providing valid inference for a selected parameter in a sparse regression setting. It is well known that classical regression tools can be unreliable in this context due to the bias generated in the selection step. Many approaches have been proposed in recent years to ensure inferential validity. Here, we consider a simple alternative to data splitting based on randomising the response vector, which allows for higher selection and inferential power than the former and is applicable with an arbitrary selection rule. We provide a theoretical and empirical comparison of both methods and extend the randomisation approach to non-normal settings. Our investigations show that the gain in power can be substantial.Comment: 24 pages, 2 figure

Natural feed after weaning improves the reproductive status of Solea senegalensis breeders

The aim of this study was to evaluate the effect of long term natural feeding in the subsequent reproductive status of 4 years old cultured Solea senegalensis, and to determine if the potential changes were structural or feeding dependent. To this aim, two different feeding regimes were used from one year after weaning and during the following 3 years; 1) a commercial dry food diet and 2) a natural feeding regime. After this period, the proportion of fluent males and the evolution of maturity stages of females over a breeding season were studied. A complete sperm quality analysis assessment was carried out, including individual volumes, motility, density and curvilinear, rectilinear and mean velocities of spermatozoa. Moreover, viability and apoptosis indexes were analyzed as indicator of molecular sperm membrane integrity. Additionally, a morphological characterization of the testes during the spawning season was conducted. Finally, both groups were fed with the same commercial pellets during one year to evaluate the effect of the diet of previous years on sperm quality. The results of this study showed how feeding can improve not only sperm quality and quantity, but also the proportion of fluent males and females in advanced maturity stages. All the sperm quality parameters resulted significantly higher in the group fed with a natural diet. Moreover, the number of apoptotic cells was significantly higher in the group fed with a commercial diet. According to the morphological features of the testes, the animals fed with a natural diet presented more basal position, less protuberances and irregular edges when compared with the animals fed with commercial diet. Interestingly, the progression of the spermatogenesis determined by the proportion of germ cells and the production of spermatozoa determined by the wider of the ducts system was also significantly larger in the natural diet group. After the standardization of the diets, mean volume per male and production of total motile cells were sig- nificantly higher in the group that was previously fed a natural diet, confirming structural improvements.Versión del editor2,04

Dendrímeros de estructura carbosilano y su uso como vectores no-virales en terapia génica y como agentes terapéuticos

El trabajo de investigación realizado en el Departamento de Química Inorgánica de la Universidad de Alcalá se puede resumir en los siguientes puntos: 1.- Se han establecido métodos de síntesis sencillos para la preparación de dendrímeros carbosilano iónicos (catiónicos y aniónicos), estables y solubles en disolución acuosa. 2.-Se ha establecido el comportamiento ácido-base de los dendrímeros aniónicos en función del pH. A pH fisiológico, ambos tipos de compuestos presentan especies diferentes en disolución, lo que puede repercutir en su comportamiento en procesos biomédicos. 3.- Los estudios biomédicos muestran que los dendrímeros carbosilano catiónicos son: a) Eficientes vehículos de transporte no-virales en procesos de terapia génica. b) Prometedores agentes terapéuticos (antibacterianos, antivirales y antipriónicos). c) Potenciales agentes de transporte de fármacos de naturaleza aniónica. 4.-Los dendrímeros carbosilano aniónicos se pueden considerar eficientes agentes antivirales frente al VIH. Sus propiedades antiinflamatorias y antibacterianas les confieren un valor añadido para su posible formulación como gel microbicida vaginal o rectal de uso tópico