Características clínicas de las uveítis en pacientes pediátricos en dos centros de referencia oftalmológica en Bogotá

Introducción: La de uveítis pediátrica tiene una prevalencia mundial de aproximadamente 30 casos por 100.000 y constituye la segunda causa de ceguera en niños en Colombia. Sin embargo, no existen estudios que caractericen esta entidad en nuestro medio. Materiales y Métodos: Estudio retrospectivo, observacional, descriptivo, mediante la revisión de historias clínicas de pacientes pediátricos con diagnóstico de uveítis en la Fundación Oftalmológica Nacional y en un centro privado de consulta oftalmológica en Bogotá entre enero de 2000 y julio de 2013. Resultados: Se describe un total de 311 pacientes pediátricos con diagnóstico de uveítis, 51.8% niñas. La edad promedio de presentación fue de 10.1 años. La uveítis posterior fue la más frecuente (57.8%), siendo más común de aparición insidiosa (87.5%) y crónica (78.1%). La etiología más frecuente fue infecciosa (58.2%) causada por toxoplasmosis (76.8%). Se encontró una diferencia estadísticamente significativa entre la agudeza visual de la uveítis anterior (20/67) e intermedia (20/69), en comparación con la uveítis posterior (20/417) y panuveítis (20/209) (p <0,05). Discusión: Los datos de este estudio proporcionan el primer reporte de las características clínicas de la uveítis en pacientes pediátricos en Colombia, donde las uveítis infecciosas son la primera causa de esta entidad. Este estudio mejorará el conocimiento de la uveítis en nuestro medio, así como es un instrumento para el desarrollo de políticas públicas para la población pediátrica colombiana, con el fin de mejorar los resultados del tratamiento de estos pacientes.

La instrumentalización de procedimientos democráticos en Irak tras la caída de Sadam Husein: tensión entre legalidad y legitimidad (2003-2010)

Esta investigación tiene como objetivo evidenciar la tensión entre legalidad y legitimidad, a raíz de la intervención de Estados Unidos en Irak en el año 2003. Dicha tensión es el resultado de la implementación de procedimientos democráticos que promovieron cambios legales en el gobierno iraquí. Sin embargo, fue la instrumentalización de tales procedimientos lo que generó una falta de legitimidad del gobierno iraquí por parte de algunos sectores sociales, debido a los intereses económicos, políticos y sociales que tenían aquellos grupos que detentaban el poder. La investigación ofrece un análisis sobre Irak bajo los conceptos de democracia formal, democracia sustancial, legalidad y legitimidad, con el propósito de comprender de manera detallada el tipo de democracia que se estableció en Irak y las tensiones generadas en la sociedad iraquí.

Alcances y limitaciones de Al Jazeera como herramienta de Soft Power. Qatar 2005- 2013

El interés de este estudio de caso es mostrar cómo Al Jazeera es utilizada como herramienta de Soft Power por parte de Qatar en su política exterior en Medio Oriente y con Estados Unidos. Se analiza y explica el concepto de Soft Power de Joseph Nye y se aplica a la política exterior qatarí y su relación con la labor informativa de Al Jazeera. Se explican diversos ejemplos en los que la cobertura de Al Jazeera tuvo consecuencias en la política exterior de Qatar y cómo Qatar adecuó su agenda para garantizar su poder sin sacrificar su seguridad. Así mismo la relación entre e Soft Power y el Hard Power y el equilibrio necesario actualmente para lograr los objetivos en política exterior de Qatar.

Tracing the Origin and Spread of Agriculture in Europe

The origins of early farming and its spread to Europe have been the subject of major interest for some time. The main controversy today is over the nature of the Neolithic transition in Europe: the extent to which the spread was, for the most part, indigenous and animated by imitatio (cultural diffusion) or else was driven by an influx of dispersing populations (demic diffusion). We analyze the spatiotemporal dynamics of the transition using radiocarbon dates from 735 early Neolithic sites in Europe, the Near East, and Anatolia. We compute great-circle and shortest-path distances from each site to 35 possible agricultural centers of origin—ten are based on early sites in the Middle East and 25 are hypothetical locations set at 58 latitude/longitude intervals. We perform a linear fit of distance versus age (and vice versa) for each center. For certain centers, high correlation coefficients (R . 0.8) are obtained. This implies that a steady rate or speed is a good overall approximation for this historical development. The average rate of the Neolithic spread over Europe is 0.6–1.3 km/y (95% confidence interval). This is consistent with the prediction of demic diffusion(0.6–1.1 km/y). An interpolative map of correlation coefficients, obtained by using shortest-path distances, shows that the origins of agriculture were most likely to have occurred in the northern Levantine/Mesopotamian area

¿Imperio o multilateralismo? (Coyuntura)

Este artículo hace un recorrido por los principales acontecimientos, previos y posteriores, generados en torno al ataque de Estados Unidos y los aliados al Iraq. También se analiza la posición de Estados Unidos frente al Consejo de Seguridad de la ONU y se propone un debate al interior de esta organización para definir su papel en el nuevo contexto internacional. Finalmente, el autor explora la situación de Medio Oriente, se estudian las posibilidades de éxito de la "Hoja de Ruta" acordada y se pasa revista a los principales acontecimientos de América Latina.

La paz Caliente (Coyuntura)

Este artículo pasa revista a los acontecimientos que han caracterizado las relaciones internacionales desde la publicación del número anterior. Analiza los pasos que se han dado en la campaña contra el terrorismo internacional que Estados Unidos y una coalición de estados iniciaron a raíz de los atentados del 11 de septiembre. En ese contexto considera que el proceso de estabilización política y reconstrucción de Afganistán no ha registrado mayores avances y que la situación actual en ese país bien podría desembocar en una reanudación de las confrontaciones políticas, si no en una nueva guerra civil. Se analizan también las nuevas tensiones que han surgido en el conflicto del Medio Oriente y en las legendarias disputas entre la India y Pakistán. En América Latina se vive una combinación de turbulencias económicas y financieras y de inestabilidad política y social.

¿“Primavera árabe” o reconfiguración imperial?: esperanzas y límites de la movilización social en el Medio Oriente (Coyuntura)

El presente artículo no pretende aportar respuestas definitivas a las preguntas formuladas, menos alimentar pronósticos. Busca, de manera crítica, fomentar el planteamiento de nuevas interrogaciones que contribuyan a un acercamiento científico, es decir anti-mediático, respecto de fenómenos presentes en la actualidad del Medio Oriente. ¿La fuerza espontánea de la movilización social logrará superar la inercia de las dinámicas imperiales que ritmaron la historia política del Medio Oriente? ¿Podrá romper las cadenas del círculo vicioso de la maldición de la abundancia? Estas preguntas quedan enteras. Sin embargo, una posible respuesta no se verá en la mal llamada “primavera árabe” un fin en sí, sino el comienzo de un despertar colectivo. El fortalecimiento de las capacidades organizativas y movilizadoras de las masas populares del Medio Oriente constituye, sin duda, un primer paso fundamental para el arranque de un proceso histórico nuevo, dominado por los afanes de emancipación.

Preparing for a post-Assad Syria: What role for the European Union? CEPS Commentary, 2 August 2012

In this CEPS Commentary, Steven Blockmans notes that a prolonged period of instability lies ahead for Syria, with an on-going risk of spill-over effects affecting the entire region. The author argues that the EU’s plans for a post-Assad Syria should extend beyond the half-hearted responses to the monumental changes that have ripped through other parts of the Arab world. In recognition of the geostrategic shifts in the Middle East and the Gulf, and pursuant to the obligation imposed upon it by the Lisbon Treaty, the EU should plan for the creation of a regional space of shared security. Such a plan would fit well into the current efforts to revamp the European Security Strategy.

Beyond retrenchment over Iran: can the EU offer a framework for regional security? CEPS Commentary, 3 September 2012

A new and far-reaching round of sanctions imposed recently on Iran by the EU is starting to hurt the country, its economy and its citizens. Yet Iran’s leadership seems deaf to demands for international weapons inspectors to be allowed unhindered access to its nuclear enrichment facilities. With a regime that is not likely to sway to international and domestic pressure, and in view of the shifting strategic landscape in the Middle East, the question is whether the twin-track approach of sanctions and diplomacy should be kept up, or whether it should make way for an alternative set of policies that could preserve the fragile stability in the wider Middle East and turn a vicious circle into a virtuous one. In this new Commentary, CEPS Senior Research Fellow Steven Blockmans argues that the High Representative of the EU for Foreign Affairs and Security Policy, supported by the European External Action Service, is in a good position to offer a negotiated way out of this seemingly intractable situation.

The Gulf Cooperation Council as a New Regional Power: Time for the EU to Propose a Strategic Partnership. Bruges Regional Integration & Global Governance Papers 3/2012, November 2012

The Gulf Cooperation Council (GCC) is a de facto regional power in the Arab world. Its role has been crucial in some of the outcomes of the Arab Spring. The GCC countries have been very pragmatic in dealing with the uprisings, avoiding any revolutionary spill-over throughout the Gulf region. This paper examines to what extent the policies of the European Union (EU) in the Gulf have changed since the beginning of the Arab Spring. It argues that despite the calls by the European Parliament and by the High Representative Baroness Ashton to improve the relationship, the EU’s support for a new policy in the Gulf after the Arab Spring is stalling, and little new or concrete has been achieved. The paper concludes that the Union needs a reinforced partnership that merges the various EU policies in the region into a single strategic partnership with the Arab countries.

Migration and diversity in Roman Britain: a multidisciplinary approach to immigrants in Roman York, England

Previous anthropological investigations at Trentholme Drive, in Roman York identified an unusual amount of cranial variation amongst the inhabitants, with some individuals suggested as having originated from the Middle East or North Africa. The current study investigates the validity of this assessment using modern anthropological methods to assess cranial variation in two groups: The Railway and Trentholme Drive. Strontium and oxygen isotope evidence derived from the dentition of 43 of these individuals was combined with the craniometric data to provide information on possible levels of migration and the range of homelands that may be represented. The results of the craniometric analysis indicated that the majority of the York population had European origins, but that 11% of the Trentholme Drive and 12% of The Railway study samples were likely of African decent. Oxygen analysis identified four incomers, three from areas warmer than the UK and one from a cooler or more continental climate. Although based on a relatively small sample of the overall population at York, this multidisciplinary approach made it possible to identify incomers, both men and women, from across the Empire. Evidence for possible second generation migrants was also suggested. The results confirm the presence of a heterogeneous population resident in York and highlight the diversity, rather than the uniformity, of the population in Roman Britain. Am J Phys Anthropol 140:546-561, 2009. (C) 2009 Wiley-Liss, Inc

The development of a new dust uplift scheme in the Met Office Unified Model

Aeolian mineral dust aerosol is an important consideration in the Earth's radiation budget as well as a source of nutrients to oceanic and land biota. The modelling of aeolian mineral dust has been improving consistently despite the relatively sparse observations to constrain them. This study documents the development of a new dust emissions scheme in the Met Office Unified ModelTM (MetUM) based on the Dust Entrainment and Deposition (DEAD) module. Four separate case studies are used to test and constrain the model output. Initial testing was undertaken on a large dust event over North Africa in March 2006 with the model constrained using AERONET data. The second case study involved testing the capability of the model to represent dust events in the Middle East without being re-tuned from the March 2006 case in the Sahara. While the model is unable to capture some of the daytime variation in AERONET AOD there is good agreement between the model and observed dust events. In the final two case studies new observations from in situ aircraft data during the Dust Outflow and Deposition to the Ocean (DODO) campaigns in February and August 2006 were used. These recent observations provided further data on dust size distributions and vertical profiles to constrain the model. The modelled DODO cases were also compared to AERONET data to make sure the radiative properties of the dust were comparable to observations. Copyright © 2009 Royal Meteorological Society and Crown Copyright

MI(R,)G(R) and British Covert Operations, 1939-42

The Military Intelligence (Research) Department of the British War Office was tasked in 1940 with encouraging and supporting armed resistance in occupied Europe and the Axis-controlled Middle East. The major contention of this paper is that, in doing so, MI(R) performed a key role in British strategy in 1940-42 and in the development of what are now known as covert operations. MI(R) developed an organic, but coherent doctrine for such activity which was influential upon the Special Operations Executive (SOE) and its own sub-branch, G(R), which applied this doctrine in practice in East Africa and the Middle East in 1940-41. It was also here that a number of key figures in the development of covert operations and special forces first cut their teeth, the most notable being Major Generals Colin Gubbins and Orde Wingate.

When can we expect extremely high surface temperatures?

In the Essence project a 17-member ensemble simulation of climate change in response to the SRES A1b scenario has been carried out using the ECHAM5/MPI-OM climate model. The relatively large size of the ensemble makes it possible to accurately investigate changes in extreme values of climate variables. Here we focus on the annual-maximum 2m-temperature and fit a Generalized Extreme Value (GEV) distribution to the simulated values and investigate the development of the parameters of this distribution. Over most land areas both the location and the scale parameter increase. Consequently the 100-year return values increase faster than the average temperatures. A comparison of simulated 100-year return values for the present climate with observations (station data and reanalysis) shows that the ECHAM5/MPI-OM model, as well as other models, overestimates extreme temperature values. After correcting for this bias, it still shows values in excess of 50°C in Australia, India, the Middle East, North Africa, the Sahel and equatorial and subtropical South America at the end of the century.