Baryon spectroscopy in the unquenched quark model

We discuss some applications of the unquenched quark model which is an extension of the CQM that includes the effects of sea quarks via a 3P0 quark-antiquark pair-creation mechanism. Particular attention is paid to the electromagnetic couplings and beta decays of baryons. It is shown that the observed discrepancies between the experimental data and the predictions of the CQM can be accounted for in large part by the effects of sea quarks in the unquenched quark model.Comment: 5 pages, 2 figures, 2 tables, invited talk at XVII International Conference on Hadron Spectroscopy and Structure, submitted for publication in Proceedings of Scienc

Laser therapy in onychomycosis scientific evidence

[Resumen] Objetivo: En los últimos años se ha extendido el tratamiento con láser como complemento del tratamiento de la onicomicosis. Existen diferentes publicaciones en relación a los distintos tipos de láser para el tratamiento de las onicomicosis, que contienen diversos resultados de eficacia. El presente trabajo recopila los resultados obtenidos en diferentes estudios con el fin de determinar la eficacia de esta terapia. Determinar la eficacia del tratamiento con laserterapia en casos de infecciones micóticas ungueales. Establecer el nivel de evidencia científica del tratamiento láser en infecciones fúngicas de las uñas. Método: Se realiza un trabajo de revisión mediante búsqueda bibliográfica en las bases de datos biomédicas PubMed, Scopus, Web de Science® (WOS) y Embase empleando las palabras clave “láser, nail, mycosis y treatment”. Se obtienen 50 resultados. Se incluyeron aquellos estudios que empleaban el láser para el tratamiento de onicomicosis, publicados durante los últimos 5 años, excluyendo aquellos que no cumplían tal requisito. Resultados: En un principio se obtienen 390 resultados relacionados con el tratamiento con láser de onicomicosis de los pies; tanto para láser CO2 neodimio como de diodo. De los últimos cinco años, solamente se obtuvieron 121 resultados. Finalmente se escogieron 50 en estudios, de los cuales 20 eran ensayos clínicos, 16 estudios experimentales, y 14 revisiones con resultados de eficacia demostrada in vitro y pautas de aplicación variadas con efectividad de tratamiento dispar. Conclusiones: Se necesita mayor número de ensayos clínicos, con una población de estudio mayor que determinen de manera adecuada, desde el punto de vista de la evidencia científica, si existe correlación entre el empleo de láser y la mejoría de los síntomas en tratamiento de onicomicosis, respecto de los tratamientos antifúngicos existentes tópicos o sistémicos[Abstract] Objective: In recent years it has expanded laser treatment as an adjunct treatment of onychomycosis. There are different publications, relating to different types of laser for the treatment of onychomycosis, contain various efficacy results. This paper lists the results obtained in different studies to determine the efficacy of this therapy. To determine the efficacy of laser therapy in cases of nail fungal infections. Set the level of scientific evidence of laser treatment in fungal nail infections. Methods: A revision work is done by literature search biomedical databases PubMed, Scopus, Embase and Web de Science® (WOS) using the keywords "laser, nail, mycosis and treatment". 50 results. those studies employing laser treatment of onychomycosis were included. Published during the last 5 years excluding those who did not meet that requirement. Results: Initially 390 results related to laser treatment of onychomycosis of the feet are obtained; both neodymium and CO2 laser diode. In the last five years, only 121 results were obtained. Finally they chose 50 studies, of which 20 were clinical trials, 16 experimental studies and 14 reviews with results proven in vitro and application guidelines varied effectiveness of disparate treatment. Conclusions: more clinical trials is needed, with a larger population of study to determine appropriate manner from the point of view of scientific evidence if there is a correlation between the use of laser and improved symptoms in treatment of onychomycosis, respect of antifungal topical or systemic treatments existing

Enrichissement de lexiques sémantiques approvisionnés par les foules : le système WISIGOTH appliqué à Wiktionary

International audienceSemantic lexical resources are a mainstay of various NLP applications. However, comprehensive and reliable resources rarely exist or are often not freely available. We discuss in this paper the context of lexical resources building and the problems of evaluation. We present Wiktionary, a freely available and collaboratively built multilingual dictionary and we propose a semi-automatic approach based on random walks for enriching its synonymy network, which uses endogenous and exogenous data. We then propose a validation "by crowds". Finally, we present an implementation of this system called WISIGOTH.Bien que de nombreuses applications de TAL reposent sur des ressources lexicales sémantiques, celles-ci sont rarement simultanément de qualité satisfaisante et librement disponibles. Partant de la confrontation entre méthodes traditionnelles et tendances émergentes de construction et d'évaluation de ressources lexicales, nous présentons dans cet article une nouvelle méthode fondée sur Wiktionary, un dictionnaire multilingue libre, disponible en ligne et construit collaborativement, puis nous proposons un enrichissement semi-automatique de son réseau de synonymie utilisant des données endogènes et exogènes, recourant à une validation " par les foules ". Nous décrivons enfin une implémentation de ce système baptisée WISIGOTH

Clustering Sets of Objects Using Concepts-Objects Bipartite Graphs

International audienceIn this paper we deal with data stated under the form of abinary relation between objects and properties. We propose an approachfor clustering the objects and labeling them with characteristic subsetsof properties. The approach is based on a parallel between formal con-cept analysis and graph clustering. The problem is made tricky due tothe fact that generally there is no partitioning of the objects that can beassociated with a partitioning of properties. Indeed a relevant partitionof objects may exist, whereas it is not the case for properties. In order toobtain a conceptual clustering of the objects, we work with a bipartitegraph relating objects with formal concepts. Experiments on artificialbenchmarks and real examples show the effectiveness of the method,more particularly the fact that the results remain stable when an in-creasing number of properties are shared between objects of differentclusters

A Parallel between Extended Formal Concept Analysis and Bipartite Graphs Analysis

International audienceThe paper offers a parallel between two approaches to con-ceptual clustering, namely formal concept analysis (augmented with theintroduction of new operators) and bipartite graph analysis. It is shownthat a formal concept (as defined in formal concept analysis) correspondsto the idea of a maximal bi-clique, while a “conceptual world” (definedthrough a Galois connection associated of the new operators) is a dis-connected sub-graph in a bipartite graph. The parallel between formalconcept analysis and bipartite graph analysis is further exploited by con-sidering “approximation” methods on both sides. It leads to suggests newideas for providing simplified views of datasets

Comparing and Fusing Terrain Network Information

International audienceTerrain networks (or complex networks) is a type of relational infor-mation that is encountered in many fields. In order to properly answer questionspertaining to the comparison or to the merging of such networks, a method thattakes into account the underlying structure of graphs is proposed. The effective-ness of the method is illustrated using real linguistic data networks and artificialnetworks, in particular

Efficacy of Surgical Techniques in Hallux Abductus Valgus by Application of Scale American Orthopedic Foot and Ankle Society: literature review

[Resumen] Objetivos: Identificar las técnicas quirúrgicas más realizadas en el Hallux Abductus Valgus, identificar las principales ventajas e inconvenientes comparando la cirugía de mínima incisión y la tradicional mediante comparación funcional para determinar su eficacia. Metodología: Se llevó a cabo una revisión bibliográfica retrospectiva y analítica con las técnicas quirúrgicas más habituales en la cirugía del Hallux Abductus Valgus, observando su eficacia funcional. Mediante aplicación de escala de la American Orthopedic Foot and Ankle Society para evaluar los resultados funcionales, los valores más altos corresponden a las técnicas de mayor eficacia funcional. Resultados: El valor máximo en la escala AOFAS se sitúa en 96 al final del seguimiento mediante la técnica percutánea sin osteotomía, el valor más bajo obtenido en el estudio es de 79 en la osteotomía de Akin y la técnica de cirugía tradicional mediante abordaje abierto es la técnica que más ha escalado con un total de 65,2. Conclusiones: Artroplastias no son valorables por la falta de estudios, las artrodesis ofrecen óptimos resultados, pero no valorables, las osteotomías proponen técnicas muy variables y las Osteodesis brindan sobresalientes resultados.[Abstract] Objectives: To identify the most performed surgical techniques in Hallux Abductus Valgus, to identify the main advantages and disadvantages comparing the surgery of minimum incision and the traditional one by means of functional comparison to determine its effectiveness. Methodology: A retrospective and analytical literature review was carried out with the most common surgical techniques in Hallux Abductus Valgus surgery, observing its functional efficacy. By means of AOFAS scale application (American Orthopedic Foot and Ankle Society) to evaluate the functional results, the highest values correspond to the techniques of greater functional competence Results: The maximum value in the AOFAS scale is 96 at the end of the follow-up using the percutaneous technique without osteotomy, the lowest value in the study of 79 in Akin osteotomy with open approach and the traditional technique using open approach is the technique that has climbed the most with a total of 65.2. Conclusions: Arthroplasties are not valuable due to lack of studies, arthrodeses offer excellent but not valuable results, osteotomies propose very variable techniques and Osteodesis offer outstanding result

Invariants and variability of synonymy networks: Self mediated agreement by confluence

International audienceEdges of graphs that model real data can beseen as judgements whether pairs of objectsare in relation with each other or not. So,one can evaluate the similarity of two graphswith a measure of agreement between judgesclassifying pairs of vertices into two cate-gories (connected or not connected). Whenapplied to synonymy networks, such measuresdemonstrate a surprisingly low agreement be-tween various resources of the same language.This seems to suggest that the judgementson synonymy of lexemes of the same lexi-con radically differ from one dictionary ed-itor to another. In fact, even a strong dis-agreement between edges does not necessarilymean that graphs model a completely differ-ent reality: although their edges seem to dis-agree, synonymy resources may, at a coarsergrain level, outline similar semantics. To in-vestigate this hypothesis, we relied on sharedcommon properties of real world data net-works to look at the graphs at a more globallevel by using random walks. They enabledus to reveal a much better agreement betweendense zones than between edges of synonymygraphs. These results suggest that althoughsynonymy resources may disagree at the levelof judgements on single pairs of words, theymay nevertheless convey an essentially simi-lar semantic information

Métrologie des graphes de terrain, application à la construction de ressources lexicales et à la recherche d'information

This thesis is organized in two parts : the first part focuses on measures of similarity (or proximity) between vertices of a graph, the second part on clustering methods for bipartite graph. A new measure of similarity between vertices, based on short time random walks, is introduced. The main advantage of the method is that it is insensitive to the density of the graph. A broad state of the art of similarities between vertices is then proposed, as well as experimental comparisons of these measures. This is followed by the proposal of a robust method for comparing graphs sharing the same set of vertices. This measure is shown to be applicable to the comparison and merging of synonymy networks. Finally an application for the enrichment of lexical resources is presented. It consists in providing candidate synonyms on the basis of already existing links. In the second part, a parallel between formal concept analysis and clustering of bipartite graph is established. This parallel leads to the particular case where a partition of one of the vertex groups can be determined whereas there is no corresponding partition on the other group of vertices. A simple method that addresses this problem is proposed and evaluated. Finally, a system of automatic classification of search results (Kodex) is presented. This system is an application of previously seen clustering methods. An evaluation on a collection of two million web pages shows the benefits of the approach and also helps to understand some differences between clustering methods.Cette thèse s'organise en deux parties : une première partie s'intéresse aux mesures de similarité (ou de proximité) définies entre les sommets d'un graphe, une seconde aux méthodes de clustering de graphe biparti. Une nouvelle mesure de similarité entre sommets basée sur des marches aléatoires en temps courts est introduite. Cette méthode a l'avantage, en particulier, d'être insensible à la densité du graphe. Il est ensuite proposé un large état de l'art des similarités entre sommets, ainsi qu'une comparaison expérimentale de ces différentes mesures. Cette première partie se poursuit par la proposition d'une méthode robuste de comparaison de graphes partageant le même ensemble de sommets. Cette méthode est mise en application pour comparer et fusionner des graphes de synonymie. Enfin une application d'aide à la construction de ressources lexicales est présentée. Elle consiste à proposer de nouvelles relations de synonymie à partir de l'ensemble des relations de synonymie déjà existantes. Dans une seconde partie, un parallèle entre l'analyse formelle de concepts et le clustering de graphe biparti est établi. Ce parallèle conduit à l'étude d'un cas particulier pour lequel une partition d'un des groupes de sommets d'un graphe biparti peut-être déterminée alors qu'il n'existe pas de partitionnement correspondant sur l'autre type de sommets. Une méthode simple qui répond à ce problème est proposée et évaluée. Enfin Kodex, un système de classification automatique des résultats d'une recherche d'information est présenté. Ce système est une application en RI des méthodes de clustering vues précédemment. Une évaluation sur une collection de deux millions de pages web montre les avantages de l'approche et permet en outre de mieux comprendre certaines différences entre méthodes de clustering