1,368 research outputs found

    Equivariant Poincar\'e series of filtrations and topology

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    Earlier, for an action of a finite group GG on a germ of an analytic variety, an equivariant GG-Poincar\'e series of a multi-index filtration in the ring of germs of functions on the variety was defined as an element of the Grothendieck ring of GG-sets with an additional structure. We discuss to which extend the GG-Poincar\'e series of a filtration defined by a set of curve or divisorial valuations on the ring of germs of analytic functions in two variables determines the (equivariant) topology of the curve or of the set of divisors

    A Rare Presentation of Invasive Tuberculosis of the Central Nervous System in an Immunocompetent Patient in a Nonendemic Country.

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    We herein report a rare case of a 25-year-old immunocompetent male patient with disseminated tuberculosis of central nervous system (CNS), first presenting as multiple cerebral lesions with no meningeal involvement. Subsequent diagnostic workup disclosed extensive peritoneal involvement. A broad differential diagnosis was considered, including neoplastic and infectious diseases. The diagnosis was confirmed with positive PCR result for Mycobacterium tuberculosis in the biopsied mesenteric tissue. The patient was started on tuberculostatic regimen with favorable outcome. No acquired or hereditary immunodeficiency was documented. Disseminated tuberculosis in immunocompetent individuals is extremely rare. Genetic susceptibility factors have been reported in individuals with extensive forms of the disease and a high index of suspicion is required, as observed in our case.info:eu-repo/semantics/publishedVersio

    Los tratados internacionales como fuente de derecho interno

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    Rosa Campillo C. (biografía): Abogada dominicana. Obtuvo su doctorado en derecho en la Universidad Autónoma de Santo Domingo (UASD). También realizó estudios de derecho internacional en la Academia Diplomática Andrés Bello de Santiago de Chile, en la Academia de Derecho Internacional de la Haya, en la Universidad de Río de Janeiro y en el Comité Jurídico Interamericano. En España, en la Universidad de Madrid, realizó estudios de desarrollo económico. Es abogado asociado de la firma Kaplan, Russin, Vecchi & Heredia Bonetti. Ha sido profesora de Derecho Internacional Público en la Universidad Pedro Henríquez Ureña y en la Escuela Diplomática y Consular del Ministerio de Relaciones Exteriores de la República Dominicana, ministerio para el que también trabajó por 21 años. Entre otras organizaciones, forma parte de la Asociación Interamericana de Abogados y de la Asociación Nacional de Mujeres Abogadas. Ha publicado Índice anotado de la colección de tratados de la República Dominicana, Los signos distintivos. Las marcas de fábrica, ¿Cómo combatir la piratería intelectual? y Derecho de los tratados e índice anotado de la colección de tratados de la República Dominicana.En este artículo se desarrolla el tema de los tratados internacionales como fuente de derecho interno. Como explica la autora, en principio, la posición que se asuma al respecto dependerá de la teoría que fundamente el análisis sobre dicha cuestión: es decir, dependerá de si se entiende que el derecho internacional público (DIP) y el derecho interno (DI) son dos sistemas jurídicos diferentes e independientes, o bien si se considera que ambos ordenamientos constituyen o integran un sistema unitario. Para los partidarios de la primera, los tratados internacionales solo pueden ser fuente de derecho interno una vez que los Estados les otorgan el valor de norma jurídica interna, por lo que, para su aplicación en las comunidades estatales, tendría preeminencia la voluntad soberana del Estado, que sería la que facultaría en definitiva su implementación. Para los partidarios de la segunda, en cambio, existiría una norma u origen fundamental común para ambos derechos, que estarían integrados y se complementarían. En ese sentido, el DIP tendría un valor propio independiente de la voluntad de los Estados, de modo que su formación, transformación y abrogación no solo se sustraería del ámbito o competencia del DI, sino que respondería a necesidades sociopolíticas propias de la comunidad internacional. La autora explica que la realidad cada vez más interdependiente de la sociedad mundial ha impulsado con el correr de los años que se reconozca la necesidad de la existencia de un equilibrio y coordinación de la norma interna y la norma internacional. El arbitraje, los derechos humanos, la cooperación internacional, la multiplicación de los organismos internacionales y hasta la emergencia de un derecho penal internacional denotan esta interdependencia de ambos ordenamientos. Es justo esta realidad de interdependencia creciente en el marco geopolítico lo que haría que un principio o norma reconocido por el Estado en sus relaciones con otros Estados no pueda ser desconocido en su jurisdicción interna. Y de ahí que la autora afirme la posibilidad e idoneidad de recurrir, por ante los tribunales nacionales, a los tratados internacionales incorporados al derecho interno

    Características Antropométricas en Atletas de Jiu Jitsu Brasilero de Alto Nivel: Rol del Estilo de Lucha

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    Indexación: Web of Science; Scielo.SUMMARY: Human performance efficiency and effectiveness in different sports depend to a large extent on the size, weight and proportion of the physique of the athlete. The aim of this study was to identify morphological characteristics of Brazilian Jiu-Jitsu (BJJ) athletes. The sample consisted of 25 highly trained male athletes who were classified according to their fighting style; guard fighter (GF) vs. pass fighter (PF). The athletes were assessed for somatotype, body composition and proportionality. For the whole group of athletes the somatotype was 2.23±0.68, 6.33±1.14, and 1.75±0.87 for endomorph, mesomorph and ectomorph components, respectively. Muscle and adipose tissue percentages were 52.34±2.15% and 19.30±2.51%, respectively. PF were significantly more mesomorph (p< 0.05) and less ectomorph (p< 0.05) than GF. Also, PF had significantly higher phantom Z score for bone mass vs. GF (0.51±0.57 vs. 0.01±0.54; p<0.05), and significantly lower muscle mass- bone mass ratio (4.55±0.31 vs. 4.77±0.56; p<0.05), height (1.71±0.06 vs. 1.77±0.07; p<0.05) and height weight ratio (40.58±1.11 vs. 41.84±1.22). Our results show that morphological characteristics are related to different fighting styles in BJJ athletes.RESUMEN: La eficiencia y efectividad del rendimiento humano en diferentes deportes depende en gran medida del tamaño, peso y proporción del físico del atleta. El objetivo de este estudio fue identificar las características morfológicas de atletas jiu-jitsu brasileros. La muestra consintió de 25 atletas varones altamente entrenados, quienes fueron clasificados de acuerdo a su estilo de lucha; guarderos (GF) vs pasadores (PF). Se evaluó en los atletas somatotipo, composición corporal y proporcionalidad. Para el grupo total de atletas el somatotipo fue 2,23±0,68, 6,33±1,14 y 1,75±0,78 para el endomorfismo, mesomorfismo y ectomorfismo, respectivamente. Los porcentajes de tejido muscular y adiposo fueron 52,34±2,15% and 19,30±2,51%, respectivamente. PF fueron significativamente las mesomorfos (p<0,05) y menos ectomorfos (p<0,05) que GF. Además PF tuvieron una significativamente alto Z score para la masa ósea (4,55±0,31 vs. 4,77±0,56; p<0,05), estatura (1,71±0,06 vs. 1,77±0,07; p<0,05) y relación altura peso (40,58±1.11 vs. 41,84±1.22). Nuestros resultados muestran que las características morfológicas están relacionadas a diferentes estilos de lucha en atletas de BJJ.http://ref.scielo.org/bzhxy

    The Poincaré Polynomial of a Linear Code

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    We introduce the Poincaré polynomial of a linear q-ary code and its relation to the corresponding weight enumerator. The question of whether the Poincaré polynomial is a complete invariant is answered affirmatively for q = 2, 3 and negatively for q ≥ 4. Finally we determine this polynomial for MDS codes and, by means of a recursive formula, for binary Reed-Muller codes

    An Agent-Based Simulation API for Speculative PDES Runtime Environments

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    Agent-Based Modeling and Simulation (ABMS) is an effective paradigm to model systems exhibiting complex interactions, also with the goal of studying the emergent behavior of these systems. While ABMS has been effectively used in many disciplines, many successful models are still run only sequentially. Relying on simple and easy-to-use languages such as NetLogo limits the possibility to benefit from more effective runtime paradigms, such as speculative Parallel Discrete Event Simulation (PDES). In this paper, we discuss a semantically-rich API allowing to implement Agent-Based Models in a simple and effective way. We also describe the critical points which should be taken into account to implement this API in a speculative PDES environment, to scale up simulations on distributed massively-parallel clusters. We present an experimental assessment showing how our proposal allows to implement complicated interactions with a reduced complexity, while delivering a non-negligible performance increase

    Lifetime of d-holes at Cu surfaces: Theory and experiment

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    We have investigated the hole dynamics at copper surfaces by high-resolution angle-resolved photoemission experiments and many-body quasiparticle GW calculations. Large deviations from a free-electron-like picture are observed both in the magnitude and the energy dependence of the lifetimes, with a clear indication that holes exhibit longer lifetimes than electrons with the same excitation energy. Our calculations show that the small overlap of d- and sp-states below the Fermi level is responsible for the observed enhancement. Although there is qualitative good agreement of our theoretical predictions and the measured lifetimes, there still exist some discrepancies pointing to the need of a better description of the actual band structure of the solid.Comment: 15 pages, 7 figures, 1 table, to appear in Phys. Rev.

    Variational approach to the scattering of charged particles by a many-electron system

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    We report a variational approach to the nonlinearly screened interaction of charged particles with a many-electron system. This approach has been developed by introducing a modification of the Schwinger variational principle of scattering theory, which allows to obtain nonperturbative scattering cross-sections of moving projectiles from the knowledge of the linear and quadratic density-response functions of the target. Our theory is illustrated with a calculation of the energy loss per unit path length of slow antiprotons moving in a uniform electron gas, which shows good agreement with a fully nonlinear self-consistent Hartree calculation. Since available self-consistent calculations are restricted to low heavy-projectile velocities, we expect our theory to have novel applications to a variety of processes where nonlinear screening plays an important role.Comment: 10 pages, 2 figures; Accepted to Physical Review

    The emerging landscape of reimbursement of regenerative medicine products in the UK: publications, policies and politics

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    Aims This paper aims to map the trends and analyse key institutional dynamics that are constituting the policies for reimbursement of Regenerative Medicine (RM), especially in the UK. Materials & Methods Two quantitative publications studies using Google Scholar and a qualitative study based on a larger study of 43 semi- structured interviews. Results Reimbursement has been a growing topic of publications specific to RM and independent from orphan drugs. Risk- sharing schemes receive attention amongst others for dealing with RM reimbursement. Trade organisations have been especially involved on RM reimbursement issues and have proposed solutions. Conclusion The policy and institutional landscape of reimbursement studies in RM is a highly variegated and conflictual one and in its infancy
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