Search results for "500"
showing 10 items of 3244 documents
Indefinite integrals for some orthogonal polynomials obtained using integrating factors
2020
A method has been presented recently for deriving integrals of special functions using two kinds of integrating factor for the homogeneous second-order linear differential equations which many spec...
Measurement of the cosmic ray energy spectrum with IceTop-73
2013
Physical review / D 88(4), 042004 (2013). doi:10.1103/PhysRevD.88.042004
Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run
2021
We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 data set. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks and, for the first time, kink-kink collisions.cA template-based search for short-duration transient signals does not yield a detection. We also use the stochastic gravitational-wave background energy density upper limits derived from the O3 data to constrain the cosmic string tension, $G\mu$, as a function of the number of kinks, or the number of cusps, for two cosmic string loop distribution models.cAdditionally, we develop and test a third model which interpolat…
Infrared lessons for ultraviolet gravity: the case of massive gravity and Born-Infeld
2014
We generalize the ultraviolet sector of gravitation via a Born-Infeld action using lessons from massive gravity. The theory contains all of the elementary symmetric polynomials and is treated in the Palatini formalism. We show how the connection can be solved algebraically to be the Levi-Civita connection of an effective metric. The non-linearity of the algebraic equations yields several branches, one of which always reduces to General Relativity at low curvatures. We explore in detail a {\it minimal} version of the theory, for which we study solutions in the presence of a perfect fluid with special attention to the cosmological evolution. In vacuum we recover Ricci-flat solutions, but also…
Tensor bounds on the hidden universe
2018
During single clock inflation, hidden fields (i.e. fields coupled to the inflaton only gravitationally) in their adiabatic vacua can ordinarily only affect observables through virtual effects. After renormalizing background quantities (fixed by observations at some pivot scale), all that remains are logarithmic runnings in correlation functions that are both Planck and slow roll suppressed. In this paper we show how a large number of hidden fields can partially compensate this suppression and generate a potentially observable running in the tensor two point function, consistently inferable courtesy of a large $N$ resummation. We detour to address certain subtleties regarding loop correction…
Towards the european strategy for particle physics: The briefing book
2007
This document was prepared as part of the briefing material for the Workshop of the CERN Council Strategy Group, held in DESY Zeuthen from 2nd to 6th May 2006. It gives an overview of the physics issues and of the technological challenges that will shape the future of the field, and incorporates material presented and discussed during the Symposium on the European Strategy for Particle Physics, held in Orsay from 30th January to 2nd February 2006, reflecting the various opinions of the European community as recorded in written submissions to the Strategy Group and in the discussions at the Symposium.
ANÁLISIS DE LOS HOTELES DE ALTA CATEGORÍA DE CROACIA DESDE EL ENFOQUE HOTEL-HUÉSPED
2011
RESUMENCroacia viene experimentando un auge turístico notable en los últimos diez años. Es crucial para su futuro desarrollo saber gestionar el sector hotelero de acuerdo con las nuevas exigencias del mercado. Este trabajo pretende analizar los hoteles de alta categoría de Croacia desde un doble enfoque hotel-huésped, centrándose en una nueva estrategia de marketing denominada Comunicación Integrada de Marketing (CIM), los avances en las Tecnologías de Información y Comunicación (TIC) y la lealtad. Los resultados demuestran el elevado grado de implantación de las TIC y de la CIM y el grado moderado de los programas de lealtad en los hoteles analizados. Además, confirman la influencia de las…
Widely Acclaimed but Lowly Utilized: Congruencing ODL Utilization with its Wide Acclaim
2019
World over, open distance learning (ODL) is widely articulated and vouchered as a panacea pedagogy for increased access and flexibility to higher education. In reality, however, the actual use of ODL approaches in higher institutions of learning in developing regions is unexpectedly low and not in tandem with its wide favorable regional and international vouchering. This paper has the goal to suggest a framework for congruencing the low utilization levels of ODL approaches with their wide acclaim. Using a cross sectional survey, an inquiry was conducted among faculty across institutions of higher learning in Uganda to establish: i) the factors explaining the wide acclaim for ODL; ii) the ut…
¿Mozart era un mutante?: propuestas didácticas sobre la música preexistente en el cine de superhéroes.
2019
Con el inicio del siglo XXI se produjo el comienzo de una edad dorada para el cine de superhéroes; especialmente, en las películas basadas en cómics de la editorial Marvel. Su éxito se debe, sobre todo, a la adaptación al cine del concepto de 'universo compartido', lo que permite mostrar personajes y situaciones interrelacionadas. Ello ofrece la opción de conectar con diversas promociones de alumnos, puesto que se trata de personajes presentes en los cines durante las últimas dos décadas. Como muestra de ello, en esta propuesta se incluirán fragmentos de dos películas distantes en el tiempo: 'X-Men 2' (2003) y 'Thor: Ragnarok' (2017). La popularidad creciente de estos filmes se ve intensifi…
El auto sacramental y la alegorización de la historia: "El socorro de Cádiz" de Juan Pérez de Montalbán
2012
Este trabajo estudia la relación excepcional entre acontecimientos históricos y género sacramental, a partir de un auto que se dio por perdido durante bastantes años. Se trata de El socorro de Cádiz de Juan Pérez de Montalbán en el que se alegoriza la defensa de Cádiz contra los ingleses en 1625. This paper analyzes the exceptional relationship between historical events and the sacramental genre, based on an «auto» that was considered lost during many years. This «auto» is El socorro de Cádiz by Juan Pérez de Montalbán, in which the playwright allegorizes the defense of Cádiz against the English in 1625.