International banking and financial fragility: the role of regulation in Brazil and Mexico, 1967–1982

The shortcomings and potential dangers of international financial flows for the health and stability of domestic banking systems in developing countries have been copiously discussed over the last decades. While the importance of capital controls and regulation as determining factors has been widely emphasised, the extent to which these policies work in episodes of financial crisis is still a matter of debate. This article examines the relationship between supervisory frameworks and banking fragility in Mexico and Brazil in the wake of the international debt crisis of 1982. It shows that the model of international banking intermediation that evolved out of the stringent capital mobility system in Brazil was considerably less vulnerable to crisis than in Mexico, which had a more lightly regulated regime. These findings provide insights into historical debates about the implications of prudential regulation and capital controls for the development and expansion of foreign finance, and whether the risks underlying international banking are necessarily inherent in the process of financial globalisation

Chronicle of a Measurement Unforetold:measurement models for intensive longitudinal data

Nowadays, researchers can easily collect dozens and dozens of measurements of a single individual by using smartphones and other electronic devices. For these kinds of studies, participants are requested to fill in short questionnaires multiple times a day for a couple of weeks or even for months, in which they report how they feel, where they are, with whom they are, and so on. The purpose of these studies is to understand how the psychological variables of interest unravel over time given the individual experiences of each subject and the specific situations where the measurements occurred. In other words, the goal is to understand the psychological dynamics of each individual. The resulting data from these studies is known as intensive longitudinal data or time series data. However, analyzing this kind of data can be challenging as sophisticated statistical methods which are still in development are required. The studies in this dissertation discuss and further develop statistical methods to analyze intensive longitudinal data in psychology based on one fundamental question: What are we measuring? With this in mind, we focused on two topics: How to distinguish between “traits” and “states”, and how to account for measurement error when studying intensive longitudinal data

On the Influence of Spatial Dispersion on the Performance of Graphene-Based Plasmonic Devices

We investigate the effect of spatial dispersion phenomenon on the performance of graphene-based plasmonic devices at THz. For this purpose, two different components, namely a phase shifter and a low-pass filter, are taken from the literature, implemented in different graphene-based host waveguides, and analyzed as a function of the surrounding media. In the analysis, graphene conductivity is modeled first using the Kubo formalism and then employing a full-$k_\rho$ model which accurately takes into account spatial dispersion. Our study demonstrates that spatial dispersion up-shifts the frequency response of the devices, limits their maximum tunable range, and degrades their frequency response. Importantly, the influence of this phenomenon significantly increases with higher permittivity values of the surrounding media, which is related to the large impact of spatial dispersion in very slow waves. These results confirm the necessity of accurately assessing non-local effects in the development of practical plasmonic THz devices.Comment: 5 pages, 18 figures, 2 table

Del “otro” como sujeto de investigación al “otro” como productor de conocimiento: (re)pensando la práctica de investigación etnográfica con organizaciones sociales

Fil: Fernandez Alvarez, Maria Ines. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Ciencias Antropológicas. Seccion de Antropología Social; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Carenzo, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencias Sociales. Instituto de Estudios Sociales de la Ciencia y la Tecnología; Argentin