Probabilistic Guarded P Systems, A New Formal Modelling Framework

Multienvironment P systems constitute a general, formal framework for modelling the dynamics of population biology, which consists of two main approaches: stochastic and probabilistic. The framework has been successfully used to model biologic systems at both micro (e.g. bacteria colony) and macro (e.g. real ecosystems) levels, respectively. In this paper, we extend the general framework in order to include a new case study related to P. Oleracea species. The extension is made by a new variant within the probabilistic approach, called Probabilistic Guarded P systems (in short, PGP systems). We provide a formal definition, a simulation algorithm to capture the dynamics, and a survey of the associated software.Ministerio de Economía y Competitividad TIN2012- 37434Junta de Andalucía P08-TIC-0420

Observation and analysis of set pieces actions in professional football

Utilizando la metodología observacional como medio, hemos analizado tres acciones a balón parado muy frecuentes en el fútbol como son los saques de esquina y los tiros libres directos e indirectos, con el fin de elaborar y generalizar una herramienta de observación. El registro de los datos se realizó sobre partidos de la UD Almería de la temporada 2006–2007 en la 2ª división nacional. Para ello se ha utilizado un diseño nomotético de seguimiento y se ha realizado un registro intermitente con codificación de los datos como multieventos, haciéndose posteriormente un análisis de la calidad del dato para asegurar la fiabilidad del registro, donde los datos fueron sometidos a un análisis de componentes de varianza y a un análisis de generalizabilidad. Como conclusiones podemos destacar la confirmación de la fiabilidad y generalizabilidad de la herramienta de observación construida y la inexistencia de diferencias significativas en el comportamiento general de los equipos observados en los saques de esquina y tiros libres directos e indirectos

Medium-induced soft gluon radiation in DIS

We study color coherence effects on the medium-induced soft gluon radiation off an asymptotic quark hit by a virtual photon traversing a hot and dense QCD medium. The transverse momentum spectrum of the emitted gluon is computed at 1st order in the opacity expansion. The interference effects between the initial and final state radiation modify the soft gluon spectrum when a finite angle between the incoming and outgoing quarks is considered, presenting a soft divergence. We comment on possible implications on observables in eA collisions.Comment: 4 pages, 2 figure, Proceedings of DIS 2012, Bonn, German

Fonología contrastiva del portugués y el castellano : una caracterización de la interlingua fónica de los castellanohablantes que aprenden portugués /

Consultable des del TDXTítol obtingut de la portada digitalitzadaEsta investigación teórica pretende servir de herramienta de consulta accesible para el profesor de portugués como lengua extranjera. En la primera parte se plantean los objetivos: (1) establecer el sistema fonológico segmental del portugués atendiendo a las variedades europea y brasileña, (2) realizar el análisis contrastivo de las descripciones de los sistemas castellano y portugués, y (3) caracterizar la interlengua fónica de los castellanohablantes que aprenden portugués. Asimismo, en esta parte, se nos introduce en el marco teórico de la lingüística contrastiva, en la adquisición de la fonología y en el concepto de interlengua fónica del aprendiente de segundas lenguas. En la segunda parte se describen, desde el punto de vista del estructuralismo y partiendo de los rasgos tradicionales de base articulatoria, los sistemas fonológicos segmentales de los estándares del castellano y del portugués. La descripción del portugués ofrece un sistema unitario que abarca las variedades europea y brasileña (carioca). A partir del orden fonológico establecido para el portugués, se describe la articulación de los alófonos correspondientes a cada fonema y se restringe su distribución (primer objetivo). En la tercera parte se lleva a cabo el análisis contrastivo de los dos sistemas fonológicos descritos (segundo objetivo), se realiza una caracterización fónica de la interlengua de castellanohablantes adultos aprendientes de portugués basada en fenómenos de transferencia (tercer objetivo), se ofrecen las conclusiones y se comentan las implicaciones didácticas que tiene una investigación de este tipo en la enseñanza del portugués como L2 en general y en la formación lingüística de traductores e intérpretes en particular. Asimismo, se apuntan algunas de las líneas futuras de investigación que se desprenden de la tesis.The present theoretical research study aims to be an easy-to-use reference tool for teachers of Portuguese as a foreign language. Part I sets out the objectives: (1) to establish the segmental phonological system of Portuguese, taking into account both the European and the Brazilian varieties of the language. (2) to carry out a contrastive analysis of the descriptions of the Spanish and the Portuguese systems, and (3) to establish the characteristics of the phonic interlanguage of Spanish-speaking learners of Portuguese. Part I also introduces the theoretical framework of contrastive linguistics, phonology acquisition and the concept of the phonic interlanguage in learners of second languages. Part II describes, from a structuralist perspective and using traditional articulatory features, the segmental phonological systems of standard Spanish and Portuguese varieties. The description of Portuguese puts forward a single system embracing both the European and the Brazilian (Carioca) varieties. Following the phonological order established for Portuguese, the articulation of the allophones corresponding to each phoneme are established and their distribution is restricted (first objective). Part III carries out a contrastive analysis of the two phonological systems described (second objective), the phonic interlanguage of adult, Spanish-speaking learners of Portuguese is characterised on the basis of transfer phenomena (third objective), the conclusions are presented and the implications of this type of research for the teaching of Portuguese as a second language, in general, and for the language training of translators and interpreters, in particular, are discussed. Some of the future lines of research arising from the thesis are also indicated

A Simulation Workflow for Membrane Computing: From MeCoSim to PMCGPU Through P-Lingua

P system simulators are of high importance in Membrane Computing, since they provide tools to assist on model validation and verification. Keeping a balance between generality and flexibility, on the one side, and efficiency, on the other hand, is always challenging, but it is worth the effort. Besides, in order to prove the feasibility of P system models as practical tools for solving problems and aid in decision making, it is essential to provide functional mechanisms to have all the elements required at disposal of the potential users smoothly integrated in a robust workflow. The aim of this paper is to describe the main components and connections within the approach followed in this pipeline.Ministerio de Industria, Economía y Competitividad TIN2017-89842-

La importancia de las relaciones investigador-investigado: el caso de las narrativas de vida profesional

Este artículo aborda un tema fundamental en los estudios llevados a cabo desde una perspectiva construccionista y narrativa: el de la relación entre investigadores e investigados. Nuestra aportación se basa en la elaboración de nueve microetnografías, en las que hemos tenido en cuenta de forma especial la dimensión biográfica, con nueve docentes de enseñanza primaria, lo que nos ha permitido: a) poner de manifiesto la importancia de explicitar la relación entre investigadores e investigados; b) examinar las fortalezas y las debilidades de cada tipo y modalidad de relación; c) apuntar la complejidad y el dinamismo de los elementos que configuran las relaciones; d) abrir vía de indagación que puede contribuir a profundizar en los aspectos relacionales que subyacen a la construcción social del conocimiento

The use of non-animal alternatives in the safety evaluations of cosmetics ingredients by the Scientific Committee on Consumer Safety (SCCS)

In Europe, the safety evaluation of cosmetics is based on the safety evaluation of each individual ingredient. Article 3 of the Cosmetics Regulation specifies that a cosmetic product made available on the market is to be safe for human health when used normally or under reasonably foreseeable conditions. For substances that cause some concern with respect to human health (e.g. colorants, preservatives, UV-filters), safety is evaluated at the Commission level by a scientific committee, presently called the Scientific Committee on Consumer Safety (SCCS). According to the Cosmetics Regulations, in the EU, the marketing of cosmetics products and their ingredients that have been tested on animals for most of their human health effects, including acute toxicity, is prohibited. Nevertheless, any study dating from before this prohibition took effect is accepted for the safety assessment of cosmetics ingredients. The in vitro methods reported in the dossiers summited to the SCCS are here evaluated from the published reports issued by the scientific committee of the Directorate General of Health and Consumers (DG SANCO); responsible for the safety of cosmetics ingredients. The number of studies submitted to the SCCS that do not involve animals is still low and in general the safety of cosmetics ingredients is based on in vivo studies performed before the prohibition

Les pensions culturals de la Junta de Comerç i la figura de Josep Roura i Estrada (1797-1860)

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Comparative sensitivity of tumor and non-tumor cell lines as reliable approach for in vitro cytotoxicity screening of lysine-based surfactants with potential pharmaceutical applications

Surfactants are used as additives in topical pharmaceuticals and drug delivery systems. The biocompatibility of amino acid-based surfactants makes them highly suitable for use in these fields, but tests are needed to evaluate their potential toxicity. Here we addressed the sensitivity of tumor (HeLa, MCF-7) and non-tumor (3T3, 3T6, HaCaT, NCTC 2544) cell lines to the toxic effects of lysine-based surfactants by means of two in vitro endpoints (MTT and NRU). This comparative assay may serve as a reliable approach for predictive toxicity screening of chemicals prior to pharmaceutical applications. After 24-h of cell exposure to surfactants, differing toxic responses were observed. NCTC 2544 and 3T6 cell lines were the most sensitive, while both tumor cells and 3T3 fibroblasts were more resistant to the cytotoxic effects of surfactants. IC50-values revealed that cytotoxicity was detected earlier by MTT assay than by NRU assay, regardless of the compound or cell line. The overall results showed that surfactants with organic counterions were less cytotoxic than those with inorganic counterions. Our findings highlight the relevance of the correct choice and combination of cell lines and bioassays in toxicity studies for a safe and reliable screen of chemicals with potential interest in pharmaceutical industry