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Search Results: 1 - 10 of 31082 matches for " Luis Lozano "
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CARACTERIZACIóN MACRO DE LA POLíTICA FISCAL EN COLOMBIA Y POSTURA FRENTE A LA CRISIS GLOBAL (2008-2009)
Lozano,Luis Ignacio;
Cuadernos de Economía , 2011,
Abstract: this paper characterizes fiscal policy in colombia and discusses the government's stance against the global financial crisis of 2008-09. using a policy rule, the paper finds that discretionary fiscal policy has been procyclical, has reduced its volatility in recent years, and has been consistent with the intertemporal budget constraint. the evidence also indicates that the fiscal authority did not design a countercyclical discretionary program to offset the effects of the crisis. instead, it expected automatic stabilizers to operate in the economic recovery, to rebalance public finances.
Interacciones sociedad-naturaleza en Mazatlán, Sinaloa
José Luis Beraud Lozano
Región y sociedad , 1997,
Abstract: El medio ambiente de la ciudad de Mazatlán, Sinaloa, ha sido radicalmente alterado, al extremo de que sus habitats naturales son reemplazados por artificiales, sin que los habitantes de estos últimos expresen preocupación por preservar algunos elementos característicos de esta concentración espacial que en su etimología significa "lugar de venados" y anta o comprendió maravillosos ecosistemas estuarinos, lagunas, además de hermosas playas. Muchos de esos recursos han desaparecido o enfrentan el peligro de una grave alteración como consecuencia del carácter de las actividades sociales o "externalidades",centradas en la obtención de ganancias a corto plazo, sin que medie una cultura que garantice la preservación de los recursos naturales para su administración sostenida a largo plazo en favor del equilibrio entre los ciclos naturales y la satisfacción de necesidades en las futuras generaciones.
Caracterización macro de la política fiscal en Colombia y postura frente a la crisis global (2008-2009)
Lozano Luis Ignacio
Cuadernos de Economía , 2011,
Abstract: En este trabajo se analiza la política fiscal en Colombia y la postura del gobierno frente a la crisis internacional (2008-2009). Utilizando una regla de política se concluye que la política fiscal discrecional ha sido procíclica, ha reducido su volatilidad en los últimos a os y ha sido consecuente con la restricción presupuestaria intertemporal. La evidencia también indica que la autoridad fiscal no dise ó un programa contra-cíclico discrecional para compensar los efectos de la crisis y que esperó a que operaran los estabilizadores automáticos en la recuperación, para superar los desajustes fiscales de la coyuntura
ALGUNAS REFLEXIONES SOBRE EL TRAMITE DE SOLUCIONES AMISTOSAS POR PARTE DE COLOMBIA ANTE EL SISTEMA AMERICANO DE PROTECCION DE LOS DERECHOS HUMANOS, SIDH (1994-1997)
Lasso-Lozano,Luis Manuel;
International Law , 2011,
Abstract: the friendly settlements at the inter-american human rights protection system and at other similar international organs of protection on human rights can be considered as a group of measures inside transitional justice process. the author examines the causes of the friendly settlements by colombia at the inter-american human rights protection system between 1994 and 1997 and their impact in institutional and legal development, with the achievement of justice right in concrete cases.
Arte y medio ambiente: la naturaleza como experiencia artística
José Luis Lozano Jiménez
Observar , 2010,
Abstract: La naturaleza y, en consecuencia, los espacios naturales han impulsado a los artistas a desarrollar un cierto tipo de proyectos artísticos que nacen de la interpretación de aquélla como material de creación plástica y como fuente de experiencia estética. La presente noticia resume las experiencias recogidas en la coordinación de los talleres que impartieron los artistas Ricardo Calero y Miguel ángel Blanco en el curso-taller sobre intervenciones artísticas contemporáneas Arte y Medio Ambiente, que se desarrolló en el Palacio del Almirante de Granada del 1 al 11 de septiembre de 2009, dentro del Curso de Verano del Centro Mediterráneo de la Universidad de Granada. The nature and, therefore, natural areas have prompted artists to develop a certain kind of artistic projects arising from the interpretation of it as material for artistic creation and a source of aesthetic experience. This paper summarizes the experience in coordinating the workshops taught by artists Ricardo Calero and Miguel Angel Blanco in the course-workshop on contemporary artistic interventions Arte y Medio Ambiente, held at the Palacio del Almirante de Granada from 1 to September 11, 2009, in the Summer Course of the Centro Mediterráneo at the University of Granada.
25 a os de política exterior en México. Carta de navegación para un país a la deriva
Luis Eduardo Garzón Lozano
El Cotidiano , 2009,
Abstract: La política exterior de México ha vivido en el último cuarto de siglo, una profunda transformación que responde al comportamiento de un mundo en tránsito entre dos siglos, como el que nos ha tocado vivir. Establecidos constitucionalmente los principios que le dan identidad internacional y una idea del papel que queremos jugar globalmente, más allá de principios o preceptos, la política exterior de México se percibe como una nave a la deriva a la que los oleajes del cambio le han afectado, perdiendo la brújula y extraviando el rumbo del país en su relación con el mundo. En un cuarto de siglo hemos pasado del liderazgo referencial en temas sustantivos al distanciamiento con países amigos, de la vocería en asuntos vitales al silencio mudo en temas fundamentales. Es tiempo de recuperar el rumbo, por el bien de la nave, pero sobre todo de sus pasajeros.
Spontaneous parametric down conversion in chirped, aperiodically-poled crystals
X. Sanchez-Lozano,Jose Luis Lucio
Physics , 2014, DOI: 10.1142/S021974991550032X
Abstract: We present a theoretical analysis of the process of spontaneous parametric down conversion (SPDC) in a non-linear crystal characterized by a linearly-chirped X(2) grating along the direction of propagation. Our analysis leads to an expression for the joint spectral amplitude, based on which we can derive various spectral-temporal properties of the photon pairs and of the heralded single photons obtained from the photon pairs, including: the single photon spectrum, the chronocyclic Wigner function and the Schmidt number. The simulations that we present are for the specific case of a collinear SPDC source based on a PPLN crystal with the signal and idler photons emitted close to the telecom window. We discuss the mechanism for spectral broadening due to the presence of a linearly chirped X(2) grating, showing that not only the width but also to some extent the shape of the SPDC spectrum maybe controlled. Also, we discuss how the fact that the different spectral components are emitted on different planes in the crystal leads to single-photon chirp.
Cirugia de la estenosis de uretra: Actualización
Lozano Ortega,José Luis; Pertusa Pe?a,Carlos;
Archivos Espa?oles de Urología (Ed. impresa) , 2007, DOI: 10.4321/S0004-06142007000600003
Abstract: objectives: to compile the main methods of surgical treatment of penile and bulbar urethral stenosis. methods: we review the most updated bibliography, focusing on authors with large experience in the treatment of urethral stenosis, and we use our own experience to contrast or reaffirm some of the techniques. results/conclusions: the base of the treatment of urethral stenosis remains in the stenosis itself (localization, etiology and length) and also in patient?s characteristics (age, past medical history). among the techniques of urethroplasty we have techniques in one step, as the technique of excision and anastomosis, and the use of free grafts or vascularized flaps. the techniques in two steps like johannson`s or perineostomy are very useful in certain cases of complex stenosis. we should keep an eye on the development of new techniques and the use of new materials that will help, once consolidated, to improve results.
Tratamiento quirúrgico de la estenosis uretral: Resultados de 100 uretroplastias
Lozano Ortega,José Luis; Pertusa Pe?a,Carlos;
Archivos Espa?oles de Urología (Ed. impresa) , 2009, DOI: 10.4321/S0004-06142009000200004
Abstract: objectives: we report our results after 100 urethroplasties for the treatment of urethral stricture both at the bulbar and penile urethra, using different techniques. methods: 100 patients with the diagnosis of anterior urethral stricture, that were submitted for urethroplasty in the period 1997-2007. of them, 57 treated by end to end urethroplasty. 4 patients underwent augmented free graft anastomotic urethroplasty. buccal mucosa free graft was used in 16 patients and penile skin onlay flap in 23. results: we have obtained 84% good results overall. in patients undergoing end to end urethroplasty we obtained 91.2% success rate. we had 75 % of good results with the free graft anastomosis. in the cases in which we used buccal mucosa patch we obtained 90% success in bulbar urethra and 67 % in penile urethra. when we used onlay flaps good results were 70.6% in penile urethra and 66,7 % in bulbar urethra. conclusions: open surgery is the best form of treatment for urethral strictures. the anastomotic urethroplasty is the technique that, applied in bulbar urethra, enables better results. for strictures over two centimeters we have other procedures of choice in penile urethra, pediculated skin flaps, except in cases with lichen esclerosus, in which the use of buccal mucosa as a graft is preferable, and in the bulbar urethra in which augmented onlay graft urethroplasty or free grafts, mainly buccal mucosa, are preferred. in long and complex strictures, the option that we must contemplate is two-stage surgery. any type of urethroplasty can fail, and this risk increases as the time passes.
Divertículo uretral tras uretroplastia de sustitución: A propósito de seis casos
Lozano Ortega,José Luis; Pertusa Pe?a,Carlos;
Archivos Espa?oles de Urología (Ed. impresa) , 2007, DOI: 10.4321/S0004-06142007001000003
Abstract: objectives: to expose the pathogenesis, diagnosis and therapeutic options for urethral diverticula appearing after substitution urethroplasty. methods: over a total of 34 urethroplasties, 20 with pediculated flap and 14 with buccal mucosa, we collected six cases of urethral diverticula/sacculation development. five of them underwent surgery, and in one case without symptoms we opted for therapeutic abstention. results: currently four patients remain asymptomatic after treatment. the other two are waiting for a second-time urethral closure. conclusions: the development of urethral pseudodiverticula secondary to stenosis after urethral substitution surgery is not an infrequent complication. for the practice of reconstructive surgery it is important to know that there are techniques to reinforce the resistance of this weakened area of the urethra.
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