Unfolding the double shuffle structure of q-multiple zeta values

We exhibit the double q-shuffle structure for the qMZVs recently introduced by Y. Ohno, J. Okuda and W. Zudilin.Comment: Submitted. Added paragraphs (5.2 and 5.3) on handling non-modified qMZVs. Red internal comment remove

Spaces of Dirichlet series

This work is dedicated to the study of multiple Dirichlet series and it focuses on three main aspects: convergence, spaces of bounded multiple Dirichlet series and the composition operators of such spaces. In the first chapter we give the necessary preliminary results on regular convergence of double and multiple series and its equivalence with the definition of convergence in a restricted sense. We also recall sequences of bounded variation and we show how they are the multipliers of convergent series in the space of sequences, extending also this characterization to double and multiple regularly conergent series. In the second chapter we recall the fundamentals on the theory of bounded ordinary Dirichlet series of one complex variable. Frist we discuss the different half-planes of convergence and their formulae, reviewing different formulae also for general Dirichlet series. Then we give Bohr's fundamental result which identifies the abscissa of uniform convergence and the abscissa of boundedness, providing a proof of a quantitative version of this result which is key to prove that the space of Dirichlet series that are convergent and bounded form a Banach algebra. Chapter three is dedicated to obtaining theorems on regular convergence of multiple Dirichlet series, and also the study of absolute convergence and uniform convergence, since it is a remarkable fact in the theory of Dirichlet series that different types of convergence produce different regions of convergence. We study sets of regular convergence following the previous work of Kojima, providing a new proof or his characterization of such sets, and we give new formulae for obtaining such sets in the double ordinary case. With this formulae we are able to obtain non-trivial examples of sets of regular convergence. In the fourth chapter we set the ground of the theory of bounded multiple Dirichlet series. We study first the double case: we define the space of bounded double Dirichlet series and, through a vector-valued perspective, we show that this space is a Banach algebra. The key result here is Bohr's Theorem, both in its scalar version and in its vector-valued version, so the first aim in the more general multiple case is to obtain an multiple analogue for this result. Once we have done that, we can show that the spaces of bounded multiple Dirichlet series are Banach algebras, and moreover we show that they are all isometrically isomorphic, independently of the dimension. In the fifth and last chapter we study composition operators on spaces of double Dirichlet series. First we review the characterization of composition operators of the space of bounded Dirichlet series of one complex variable, and we improve such characterization by dropping the hypothesis of holomorphy of the symbol. Then we focus our interest on the characterization of the composition operators of the space of bounded double Dirichlet series. We also show how the composition operators of this space of Dirichlet series are related to the composition operators of the corresponding spaces of holomorphic functions. Finally, we give a characterization of the superposition operators in the space o bounded Dirichlet series and the Hardy spaces of Dirichlet series.This work is dedicated to the study of multiple Dirichlet series and it focuses on three main aspects: convergence, spaces of bounded multiple Dirichlet series and the composition operators of such spaces. In the first chapter we give the necessary preliminary results on regular convergence of double and multiple series and its equivalence with the definition of convergence in a restricted sense. We also recall sequences of bounded variation and we show how they are the multipliers of convergent series in the space of sequences, extending also this characterization to double and multiple regularly conergent series. In the second chapter we recall the fundamentals on the theory of bounded ordinary Dirichlet series of one complex variable. Frist we discuss the different half-planes of convergence and their formulae, reviewing different formulae also for general Dirichlet series. Then we give Bohr's fundamental result which identifies the abscissa of uniform convergence and the abscissa of boundedness, providing a proof of a quantitative version of this result which is key to prove that the space of Dirichlet series that are convergent and bounded form a Banach algebra. Chapter three is dedicated to obtaining theorems on regular convergence of multiple Dirichlet series, and also the study of absolute convergence and uniform convergence, since it is a remarkable fact in the theory of Dirichlet series that different types of convergence produce different regions of convergence. We study sets of regular convergence following the previous work of Kojima, providing a new proof or his characterization of such sets, and we give new formulae for obtaining such sets in the double ordinary case. With this formulae we are able to obtain non-trivial examples of sets of regular convergence. In the fourth chapter we set the ground of the theory of bounded multiple Dirichlet series. We study first the double case: we define the space of bounded double Dirichlet series and, through a vector-valued perspective, we show that this space is a Banach algebra. The key result here is Bohr's Theorem, both in its scalar version and in its vector-valued version, so the first aim in the more general multiple case is to obtain an multiple analogue for this result. Once we have done that, we can show that the spaces of bounded multiple Dirichlet series are Banach algebras, and moreover we show that they are all isometrically isomorphic, independently of the dimension. In the fifth and last chapter we study composition operators on spaces of double Dirichlet series. First we review the characterization of composition operators of the space of bounded Dirichlet series of one complex variable, and we improve such characterization by dropping the hypothesis of holomorphy of the symbol. Then we focus our interest on the characterization of the composition operators of the space of bounded double Dirichlet series. We also show how the composition operators of this space of Dirichlet series are related to the composition operators of the corresponding spaces of holomorphic functions. Finally, we give a characterization of the superposition operators in the space o bounded Dirichlet series and the Hardy spaces of Dirichlet series

On Modeling the Behavior of Comparators for Complex Fuzzy Objects in a Fuzzy Object-Relational Database Management System

This paper proposes a parameterized definition for fuzzy comparators on complex fuzzy datatypes like fuzzy collections with conjunctive semantics and fuzzy objects. This definition and its implementation on a Fuzzy Object-Relational Database Management System (FORDBMS) provides the designer with a powerful tool to adapt the behavior of these operators to the semantics of the considered application."Consejeria de Innovacion Ciencia y Empresa de Andalucia" (Spain) P06-TIC-01570 P07-TIC-02611Ministry of Science and Innovation, Spain (MICINN) Spanish Government TIN2009-08296 TIN2007-68084-C02-0

Antibacterial Effect of Functionalized Polymeric Nanoparticles on Titanium Surfaces Using an In Vitro Subgingival Biofilm Model

This research was funded by the Ministry of Economy and Competitiveness (MINECO) and the European Regional Development Fund (FEDER), grant number (PID2020-114694RB-I00 MINECO/AEI/FEDER/UE). M. Toledano-Osorio holds a FPU fellowship from the Ministry of Universities (FPU20/00450).This investigation aimed to evaluate the antibacterial effect of polymeric nanoparticles (NPs), functionalized with calcium, zinc, or doxycycline, using a subgingival biofilm model of six bacterial species (Streptococcus oralis, Actinomyces naeslundii, Veillonela parvula, Fusobacterium nucleatum, Porphyromonas gingivalis, and Aggregatibacter actinomycetemcomitans) on sandblasted, large grit, acidetched titanium discs (TiDs). Undoped NPs (Un-NPs) or doped NPs with calcium (Ca-NPs), zinc (Zn-NPs), or doxycycline (Dox-NPs) were applied onto the TiD surfaces. Uncovered TiDs were used as negative controls. Discs were incubated under anaerobic conditions for 12, 24, 48, and 72 h. The obtained biofilm structure was studied by scanning electron microscopy (SEM) and its vitality and thickness by confocal laser scanning microscopy (CLSM). Quantitative polymerase chain reaction of samples was used to evaluate the bacterial load. Data were evaluated by analysis of variance (p < 0.05) and post hoc comparisons with Bonferroni adjustments (p < 0.01). As compared with uncovered TiDs, Dox-NPs induced higher biofilm mortality (47.21% and 85.87%, respectively) and reduced the bacterial load of the tested species, after 72 h. With SEM, scarce biofilm formation was observed in Dox-NPs TiDs. In summary, Dox-NPs on TiD reduced biofilm vitality, bacterial load, and altered biofilm formation dynamics.Spanish GovernmentEuropean Commission PID2020-114694RB-I00 MINECO/AEI/FEDER/UEMinistry of Universities FPU20/0045

"Los Bienaventurados”: un encuentro con Fernando Soto Aparicio. Un tributo en su cumpleaños 82

Al final de nuestra travesía literaria por este texto, en compañía del Club de Lectura de la Universidad Militar Nueva Granada, reconoceremos cómo, desde la literatura, específicamente desde la obra del escritor colombiano Fernando Soto Aparicio y su novela “Los Bienaventurados”, surge la realidad misma, y cómo aquellos mundos “ficcionales” se deslizan por nuestro pasado, presente y futuro para despertarnos en la realidad colombiana actual para, finalmente, dejar en lectores de diferentes disciplinas cuestionamientos alrededor del tema de la paz y el post-conflicto

“Los Bienaventurados”: un encuentro con Fernando Soto Aparicio. Un tributo en su cumpleaños 82

Al final de nuestra travesía literaria por este texto, en compañía del Club de Lectura de la Universidad Militar Nueva Granada, reconoceremos cómo, desde la literatura, específicamente desde la obra del escritor colombiano Fernando Soto Aparicio y su novela “Los Bienaventurados”, surge la realidad misma, y cómo aquellos mundos “ficcionales” se deslizan por nuestro pasado, presente y futuro para despertarnos en la realidad colombiana actual para, finalmente, dejar en lectores de diferentes disciplinas cuestionamientos alrededor del tema de la paz y el post-conflicto

Folk medicine in the northern coast of Colombia: an overview

<p>Abstract</p> <p>Background</p> <p>Traditional remedies are an integral part of Colombian culture. Here we present the results of a three-year study of ethnopharmacology and folk-medicine use among the population of the Atlantic Coast of Colombia, specifically in department of Bolívar. We collected information related to different herbal medicinal uses of the local flora in the treatment of the most common human diseases and health disorders in the area, and determined the relative importance of the species surveyed.</p> <p>Methods</p> <p>Data on the use of medicinal plants were collected using structured interviews and through observations and conversations with local communities. A total of 1225 participants were interviewed.</p> <p>Results</p> <p>Approximately 30 uses were reported for plants in traditional medicine. The plant species with the highest fidelity level (Fl) were <it>Crescentia cujete </it>L. (flu), <it>Eucalyptus globulus </it>Labill. (flu and cough), <it>Euphorbia tithymaloides </it>L. (inflammation), <it>Gliricidia_sepium</it>_(Jacq.) Kunth (pruritic ailments), <it>Heliotropium indicum </it>L. (intestinal parasites) <it>Malachra alceifolia </it>Jacq. (inflammation), <it>Matricaria chamomilla </it>L. (colic) <it>Mentha sativa </it>L. (nervousness), <it>Momordica charantia </it>L. (intestinal parasites), <it>Origanum vulgare </it>L. (earache), <it>Plantago major </it>L. (inflammation) and <it>Terminalia catappa </it>L. (inflammation). The most frequent ailments reported were skin affections, inflammation of the respiratory tract, and gastro-intestinal disorders. The majority of the remedies were prepared from freshly collected plant material from the wild and from a single species only. The preparation of remedies included boiling infusions, extraction of fresh or dry whole plants, leaves, flowers, roots, fruits, and seeds. The parts of the plants most frequently used were the leaves. In this study were identified 39 plant species, which belong to 26 families. There was a high degree of consensus from informants on the medical indications of the different species.</p> <p>Conclusions</p> <p>This study presents new research efforts and perspectives on the search for new drugs based on local uses of medicinal plants. It also sheds light on the dependence of rural communities in Colombia on medicinal plants.</p

Comunidades de práctica predoctorales: Diez años del Seminari Predoc en la Facultat de Ciències Matemàtiques

[EN] The Seminari Predoc is a community of practice organised by PhD students together with the Faculty of Mathematical Sciences of the Valencia University. The aim of these seminars is to help participants to refine and improve their academic presentations, which in turn yields a connecting between them and members from different institutions around the globe as well as with the faculty itself. In this paper, we describe its origin, objectives, and evolution on the occasion of its 10th anniversary.[ES] El Seminari Predoc es una comunidad de práctica organizada por los estudiantes de doctorado vinculados a la Facultat de Ciències Matemàtiques de la Universitat de València que permite dar a conocer su trabajo a toda la comunidad educativa. Este seminario tiene el objetivo de ayudar a los participantes a perfilar y mejorar sus ponencias de carácter académico, estrechando y creando, a su vez, vínculos con otras personas en una situación similar, con los diferentes miembros de la Facultad y con los estudiantes visitantes. En este artículo describimos su origen, objetivos y evolución aprovechando su décimo aniversario.Calvo Bayarri, G.; Castillo Medina, J.; Cosme Llópez, E.; Dantas, S.; Giménez Conejero, R.; Martínez Minaya, J.; Reula Martín, M. (2022). Comunidades de práctica predoctorales: Diez años del Seminari Predoc en la Facultat de Ciències Matemàtiques. Editorial Universitat Politècnica de València. 1-14. https://doi.org/10.4995/INRED2022.2022.1580511

Intervenir sobre la agresividad en la conducción.

El Instituto Universitario de Investigación en Tráfico y Seguridad Vial (INTRAS) y Attitudes (programa social de Audi), tras la publicación de los libros "La agresividad en la conducción: Una investigación a partir de la visión de la población española" y "La agresividad en la conducción: una visión a partir de las investigaciones internacionales", se plantearon como actividad complementaria la realización de unas jornadas que cumplieran los siguientes objetivos: • Permitir avanzar en el conocimiento y la implementación de medidas que contribuyan a una mejora de la seguridad vial. • Servir como foro de expresión para científicos y profesionales con un tono constructivo, plural e integrador. • Tener un componente de difusión tanto al público científico y profesional, como a la población en general a través de una amplia convocatoria a los medios de comunicación. • Partir de una rigurosidad científica en su planteamiento, siendo ésta la única imposición que centrara las intervenciones de todos los participantes. Sus características serían: • La temática es la agresividad en la conducción. • Se desarrolla mediante la organización de varios Focus-group (grupos de discusión) que sirvan de reunión de expertos y responsables en las materias y campos de actuación confluyentes en esta problemática. • Dichos Focus-group cuentan con personas relevantes de nuestro país. • Tener unos documentos que centraran la discusión (mediante la aportación a los miembros de los Focus-group de los libros mencionados). • Una conferencia magistral de una prestigiosa investigadora en la temática propuesta (la agresividad en la conducción) como es el caso de Dianne Parker, profesora de psicología de la Universidad de Manchester (UK) y Directora del Driver Behavior Research Unit. • Dividida en dos días, para atender a dos objetivos tan distintos como complementarios. El primero de ellos para el desarrollo de los Focus-group donde se pproducen los debates entre los expertos y el segundo de ellos para servir de plataforma de divulgación de los resultados de los estudios, de la conferencia magistral y de los resultados de los distintos Focus-group. Las 1as Jornadas de Reflexión Attitudes: "La agresividad en la conducción” se llevaron a cabo los días 17 y 18 de octubre de 2002. Se desarrollaron cuatro Focus-group con los siguientes títulos: • "Intervenir sobre la agresividad en la conducción: aspectos jurídicos-legales" • "Intervenir sobre la agresividad en la conducción: programas educativos y sociales" • "Intervenir sobre la agresividad en la conducción: medios de comunicación y publicidad" • "Los niños y la agresividad en la conducción" Y esto que tiene entre sus manos es el cuaderno que recoge las conclusiones de las referidas jornadas. Encontrarán, en correspondencia con los Focus-group mencionados, tanto los intervinientes en los mismos como un resumen de las principales líneas de debate y conclusiones a las que llegaron cada uno de ellos. Nuestro último objetivo es impulsar e iniciar un segundo paso en la actividad de investigación-intervención, que desarropado de protagonismo, desde la integración y suma de esfuerzos de instituciones y personas, permita avanzar más y más rápido en el sentido deseado de prevenir la accidentalidad viaria abordando en este caso el factor de riesgo de la agresividad en la conducción