Resumen: Every finite group G acts as an automorphism group of some non-orientable Klein surfaces without boundary. The minimal genus of these surfaces is called the symmetric cross-cap number and denoted by ˜σ(G). This number is related to other parameters defined on surfaces as the symmetric genus and the strong symmetric genus. The
systematic study of the symmetric cross-cap number was begun by C. L. May, who also calculated it for certain finite groups. Here we obtain the symmetric cross-cap number for the groups Cm ×Dn. As an application of this result, we obtain arithmetic sequences of integers which are the symmetric cross-cap number of some group. Finally, we recall the several different genera of the groups Cm × Dn.
Palabras clave: Automorphism groups; Klein surfaces; cross-cap numbers
Resumen: Missing data represent an important limitation for cross-country analyses of national systems, growth and
development. This paper presents a new cross-country panel dataset with no missing value. We make use of
a new method of multiple imputation that has recently been developed by Honaker and King (2010) to deal
specifically with time-series cross-section data at the country-level. We apply this method to construct a
large dataset containing
a great number of indicators measuring six key country-specific dimensions: innovation
and technological capabilities, education system and human capital, infrastructures, economic competitiveness,
political-institutional factors, and social capital. The CANA panel dataset thus obtained provides a
rich and complete set of 41 indicators for 134 countries in the period 1980-2008 (for a total of 3886 countryyear
observations). The empirical analysis shows the reliability of the dataset and its usefulness for crosscountry
analyses of national systems, growth and development. The new dataset is publicly available.
Palabras clave: Missing data; Multiple Imputation Methods; National Systems of innovation; Social capabilities;
Economic growth and development; Composite indicators.
Resumen: Measurements of inclusive W production cross-sections in pp collisions at center-of-mass energy of 2.76 TeV are presented for the first time, based on 241 inverse nanobarns of data recorded by the CMS detector at the LHC. The measurement, performed in the muon decay channel, gives σ_pp →WX× B(W → μν) = 3.94 ñ 0.18(stat) ñ 3.9(lumi) nb. Theoretical predictions, calculated at the next-tonext-
to-leading
order in QCD using recent parton distribution functions, are in agreement with the measured cross-sections. W^+ and W^− cross-sections and their ratio are also reported. This essay also presents a description of the CMS detector, of the generation and simulation of Monte Carlo
samples of events as well as the characterization of signal events and the complete process of selection and reconstruction of these.
[RESUMEN] En este trabajo se ha medido por primera vez la sección eficaz inclusiva de producción de bosones W a una energía de centro de masas de 2.76 TeV. Los datos analizados corresponden a una muestra de colisiones pp de 241 inversos nanobarn de luminosidad integrada en el experimento
CMS, situado en el acelerador LHC. La medida, realizada en el canal de desintegración muónico, da σ_pp→ WX× B(W → μν) = 3.94 ñ 0.18(stat) ñ 3.9(lumi) nb. Los resultados obtenidos son compatibles con las predicciones teóricas, calculadas a next-to-next-to-leading order en QCD usando
funciones de distribución partónicas recientes. También se presentan las secciones eficaces de W^+ y W^− y el cociente entre éstas. En el trabajo se describe además el funcionamiento del detector CMS, de la generación y simulación de muestras de sucesos por métodos de Monte Carlo así como la caracterización de sucesos de señal y el proceso completo de selección y reconstrucción de éstos.
Resumen: Cross-border protection of intellectual property rights has become more and more important. Notwithstanding international harmonization in the field of IP, the availability of proceedings concerning infringements of foreign IP rights and the limitations imposed on them vary significantly between countries. The most important factors influencing
forum selection by plaintiffs are discussed. Special attention is paid to the interpretation of jurisdiction rules over infringement claims, the role of choice of forum agreements in IP litigation and the jurisdiction to adopt provisional measures. The most recent case-law of the ECJ on IP litigation, concerning consolidation against multiple defendants and the meaning of exclusive jurisdiction on validity of registered rights as a limit to cross-border adjudication, is thoroughly discussed. Finally, the focus turns to the difficulties raised by the limited possibilities of coordination of procedures at world level, the risks of forum shopping in this area and the rules and principles concerning recognition and enforcement of judgments. -- La posibilidad de ejercitar acciones relativas a la protección derechos de propiedad intelectual de varios países ha cobrado especial trascendencia. A pesar de los avances en la armonización internacional en materia de propiedad intelectual, se observan significativas diferencias según los países con respecto a esa posibilidad. Los principales factores que condicionan la opción por los tribunales de un Estado frente a otros son objeto de análisis, así como muy particularmente la aplicación de las normas de competencia judicial internacional a litigios sobre infracción, el significado de los acuerdos de elección de foro, y la competencia para adoptar medidas provisionales. La reciente jurisprudencia del TJCE en materia de litigios sobre IP, relativa al alcance del fuero de la pluralidad de demandados y de la competencia exclusiva en los litigios sobre validez es objeto de un detallado análisis. Por último, también se aborda las carencias de los mecanismos de coordinación de procesos a escala mundial, así como el riesgo de forum shopping y el funcionamiento de las reglas sobre reconocimiento y ejecución de decisiones en este sector.
Resumen: Este trabajo se presenta como un estudio comparativo entre una gran variedad de clasificadores utilizados en la minería de datos. Hay diversos métodos aplicados por los
distintos clasificadores, no obstante, este trabajo no finaliza puesto que cada clasificador ofrece buenos resultados con un número muy limitado de clases. El objetivo de este trabajo consiste en constatar que actualmente no existe ningún modelo
que permita la
clasificación de cualquier conjunto de muestras dado, y que simultáneamente obtenga nos resultados satisfactorios. Al mismo tiempo se ha propuesto un nuevo modelo de clasificación que mejora algunos resultados al compararlos con los mejores resultados ofrecidos por los demás clasificadores, y aunque dista de ser un clasificador
generalizado, se plantea la combinación de clasificadores como una técnica rometedora dentro de la tendencia actual en clasificación por los mejores resultados que ofrece. Asimismo en la preparación de los datos, con la finalidad de definir una óptima estrategia de prueba, se han utilizado tanto el algoritmo de estratificación, con el
fin de heterogeneizar los conjuntos de datos, como las técnicas basadas en validación cruzada “cross-validation” para dividir dichos datos. Con estas técnicas se pretende
mejorar los resultados obtenidos por los tres métodos de clasificación clásicos Agrupamiento borroso, Bayes y Vecinos más cercanos (nearest-neighbours).
[Abstract]
This work appears as a comparative study between a great variety of classifiers used in the data mining. There are diverse methods applied by the different classifiers,
nevertheless, this work does not finish since every classifier offers proved with a limited number of classes. The aim of this work consists of stating that nowadays there does not exist any model who allows the classification of any set of samples in view of, and that
simultaneously obtains a few satisfactory results. At the same time in this work we have proposed a new model of classification who improves some results on having compared
them with the best results offered by other classifiers, and though it is far from being a widespread classifier, the combination of classifiers appears as a promising technology inside the current trend in classification for the best results that it offers. Likewise in the
preparation of the information, with the purpose of defining an ideal strategy of test, it have been used the algorithm of stratification, in order to divide the sets of information as the technologies based on crossed validation, for dividing the above mentioned information. With these technologies one tries to improve the results obtained by three classic methods of classification Fuzzy Clustering, Bayes and Nearest Neighbors
Palabras clave: Clasificación, Lógica Fuzzy, Clasificador Fuzzy, Clasificador Bayesiano, Clasificador de nearest-neighbours (vecinos más cercanos), Estratificación, Ten fold cross-validation (validación cruzada), Classification, Fuzzy logic, Fuzzy classifier, Bayesian classifier, Knearest-neighbours, Stratification, Ten fold cross-validation
Departamento: Fac. de Informática - Depto. de Ingeniería de Software e I. A. - Lenguajes y Sistemas Informáticos
CDU: 004.6(043.3):510.64(043.3)
Notas: Master en Investigación en Informática, Facultad de Informática, Departamento de Ingeniería del Software e Inteligencia Artificial , curso 2008-2009
Resumen: ADP-ribosyltransferases including toxins secreted by Vibrio cholera, Pseudomonas aerurginosa, and other pathogenic bacteria inactivate the function of human target proteins by attaching ADP-ribose onto a critical
amino acid residue. Cross-species polymerase chain reaction (PCR) and database mining identified the orthologs of these ADP-ribosylating toxins in humans and the mouse. The human genome contains four functional toxin-related ADP-ribosyltransferase genes (ARTs) and two related intron-containing pseudogenes; the mouse has six functional orthologs. The human and mouse ART genes map to chromosomal regions with conserved linkage synteny. The individual ART genes reveal highly restricted expression patterns, which are largely conserved in humans and the mouse. We confirmed the predicted extracellular location of the ART proteins by expressing recombinant ARTs in insect cells. Two human and four mouse ARTs contain the active site motif (R-S-EXE) typical of arginine-specific ADP-ribosyltransferases and exhibit the predicted enzyme activities. Two other human ARTs and their murine orthologues deviate in the active site motif and lack detectable enzyme activity. Conceivably, these ARTs may have acquired a new specificity or function. The position-sensitive iterative database search program PSI-BLAST connected the mammalian ARTs with most known bacterial ADP-ribosylating toxins. In contrast, no related open reading frames occur in the four completed genomes of lower eucaryotes (yeast, worm, fly, and mustard weed). Interestingly, these organisms also lack genes for ADP-ribosylhydrolases, the enzymes that reverse protein ADP-ribosylation. This suggests that the two enzyme families that catalyze reversible mono-ADP-ribosylation either were lost from the genomes of these nonchordata eucaryotes or were subject to horizontal gene transfer between kingdoms.
Descriptores: Misticismo; Poesía contemporánea; San Juan de la Cruz; Clara Janés;; Mysticism; Contemporary poetry; Saint John of the Cross; Clara Janés
