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Search Results: 1 - 10 of 475892 matches for " Miguel A Alonso "
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Crisis gemelas: una nueva generación de modelos de crisis monetarias y financieras o una simple extensión de las generaciones y modelos precedentes?
Miguel A. Alonso Neira
Análisis Económico , 2005,
Abstract: La crisis asiática de finales de la década de los noventa, desmontó el aparato teórico de gran parte de los modelos de crisis monetarias que se habían desarrollado previamente. Por un lado, desafió la idea de que las turbulencias monetarias fuesen resultado de la incapacidad de los gobiernos para disciplinar sus políticas económicas. Por otro lado, se observó que las economías asiáticas no mostraban desequilibrios fundamentales que minasen la capacidad de sus gobiernos para respaldar la paridad de sus monedas. Sin embargo, bajo esta aparente solidez de los fundamentos económicos, se escondía un sistema financiero frágil especialmente vulnerable a pánicos y crisis. Este nuevo escenario, en el que la fragilidad de las instituciones financieras domésticas podía afectar a la estabilidad cambiaria de estos países, requería la adopción de una nueva generación de modelos, los modelos de crisis gemelas . El presente trabajo ofrece una revisión de este nuevo enfoque de las crisis monetarias y financieras, integrándolo en el marco de la literatura sobre crisis monetarias previamente desarrollada, y preguntándose si realmente estamos ante una nueva generación de modelos o ante una simple extensión de los anteriores.
La macroeconomía del capital en el siglo XXI
Miguel A. Alonso Neira
Análisis Económico , 2004,
Abstract: Se ofrece una introducción a la teoría macroeconómica del capital, revisando su evolución histórica, así como sus principales aportaciones. Se destacan especialmente las contribuciones de Garrison (2001), concluyendo que este autor ha abierto las puertas para una profundización de la investigación en las líneas de pensamiento de la macroeconomía del capital.
The Taylor Rule and the Sandpile: The Taylor Contribution and Other Matters  [PDF]
Juan L. Valderrábano López, Miguel A. Alonso Neira
Open Journal of Modelling and Simulation (OJMSi) , 2017, DOI: 10.4236/ojmsi.2017.54014
Abstract: The author of the Taylor Rule has provided new evidence about the application of the Sandpile model to his rule. The same findings of the Sandpile model are described in the Taylor paper in agreement with the conclusions of the Sandpile model. That is, that keeping interest rates too low for too long penalizes the economic recovery. On top of that the Sandpile also provides a metric for the severity of the crisis. The same law (Power Law) applies to the size and the duration of the crisis just modifying the order of the distribution paving thus a way for measuring the size of the crisis. According to the NBER data, the length is already determined for the US crisis, if the model holds on, we can also assess the severity.
Spherical fields as nonparaxial accelerating waves
Miguel A. Alonso,Miguel A. Bandres
Physics , 2012, DOI: 10.1364/OL.37.005175
Abstract: We introduce nonparaxial spatially accelerating waves whose two-dimensional transverse profiles propagate along semicircular trajectories while approximately preserving their shape. We derive these waves by considering imaginary displacements on spherical fields, leading to simple closed-form expressions. The structure of these waves also allows the closed-form description of pulses.
Rhabdorrhynchus echii (Brahm, 1790), a “forgotten” name (Coleoptera, Curculionidae, Lixinae)
Massimo Meregalli,Miguel A. Alonso-Zarazaga
ZooKeys , 2012, DOI: 10.3897/zookeys.243.3976
Abstract: The application of the name Curculio echii Brahm, 1790 is discussed. Based on the description it is evident that it should be applied to a German species of the genus Rhabdorrhynchus, and that it has priority over the name currently applied to the species, R. seriegranosus Chevrolat, 1873. The new combination Rhab-dorrhynchus echii (Brahm, 1790) is proposed. As there is a lack of any type material of C. echii a neotype is designated. Based on the study of the type specimen, R. seriegranosus is restored as a valid species.
Software Engineering to Professionalize Software Development
Juan Miguel Alonso,Fernando García
Revista Antioque?a de las Ciencias Computacionales y la Ingeniería de Software RACCIS , 2011,
Abstract: The role, increasingly important, that plays the software in the systems with widespread effects presents new challenges for the formation of Software Engineers. Not only because social dependence software is increasing, but also because the character of software development is also changing and with it the demands for software developers certified. In this paper are propose some challenges and aspirations that guide the learning processes Software Engineering and help to identify the need to train professionals in software development.
Temporally disordered Ising models
Juan J. Alonso,Miguel A. Munoz
Physics , 2000, DOI: 10.1209/epl/i2001-00545-8
Abstract: We present a study of the influence of different types of disorder on systems in the Ising universality class by employing both a dynamical field theory approach and extensive Monte Carlo simulations. We reproduce some well known results for the case of quenched disorder (random temperature and random field), and analyze the effect of four different types of time-dependent disorder scarcely studied so far in the literature. Some of them are of obvious experimental and theoretical relevance (as for example, globally fluctuating temperatures or random fields). All the predictions coming from our field theoretical analysis are fully confirmed by extensive simulations in two and three dimensions, and novel qualitatively different, non-Ising transitions are reported. Possible experimental setups designed to explore the described phenomenologies are also briefly discussed.
Can a Dove prism change the past of a single photon?
Miguel A. Alonso,Andrew N. Jordan
Mathematics , 2015, DOI: 10.1007/s40509-015-0044-8
Abstract: We reexamine the thought experiment and real experiment of Vaidman et al., by placing Dove prisms in the nested Mach-Zehnder interferometer arms. In those previous works, the criterion of whether a single photon was present, or not, was the presence of a "weak trace", indicating the presence of a nonzero weak value. This was verified by slightly varying the mirror angle at a given frequency, which was then detected on a position sensitive detector at the oscillation frequency. We show the presence of the Dove prisms gives identical weak values everywhere to the previous configuration because the prisms change neither the path difference, nor the mode profile in the aligned case. Nevertheless, the same slight variations of the interferometer mirrors now give a signal at the first mirror of the nested interferometer. We can interpret this result as a misaligned optical interferometer, whose detailed response depends on the stability of the elements, or as the detector coupling to a nonzero effective weak value.
Three-dimensional Accelerating Electromagnetic Waves
Miguel A. Bandres,Miguel A. Alonso,Ido Kaminer,Mordechai Segev
Physics , 2013, DOI: 10.1364/OE.21.013917
Abstract: We present a general theory of three-dimensional nonparaxial spatially-accelerating waves of the Maxwell equations. These waves constitute a two-dimensional structure exhibiting shape-invariant propagation along semicircular trajectories. We provide classification and characterization of possible shapes of such beams, expressed through the angular spectra of parabolic, oblate and prolate spheroidal fields. Our results facilitate the design of accelerating beams with novel structures, broadening scope and potential applications of accelerating beams.
La legibilidad de los materiales educativos sobre la diabetes: Implicaciones para la educación de pacientes con materiales escritos
Aguilera,Carolina; Pérez,Miguel A.; Alonso Palacio,Luz Marina;
Revista Salud Uninorte , 2010,
Abstract: objective: to ascertain the health literacy levels of diabetes patient education materials distributed by government-funded or nonprofit organization. methods: this descriptive study explored readability levels of 81 written diabetes health education materials available from healthcare providers. the simplified measure of gobbledygoop (smog) readability formula and the fray graph were utilized to determine readability levels of diabetes patient information materials. the sample size excluded materials not in english and those with commercial purposes. data analysis included measures of central tendency. in adition used t test and p-value. results: results from this study show that while education materials provided by nonprofit organizations are easier to read, they are still generally above the reading level of a large portion of the population they are intended to reach. conclusion: results from this study suggest that the majority of diabetes patient education materials are not adequate to reach their intended population due to high readability levels.
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