EFFECTS OF THE ENVIRONMENTAL REGULATION ON THE INTERNATIONAL TRADE PATTERN FOR AGRICULTURAL PRODUCTS

Agricultural and Food Policy, Environmental Economics and Policy, International Relations/Trade,

On-off intermittency and amplitude-phase synchronization in Keplerian shear flows

We study the development of coherent structures in local simulations of the magnetorotational instability in accretion discs in regimes of on-off intermittency. In a previous paper [Chian et al., Phys. Rev. Lett. 104, 254102 (2010)], we have shown that the laminar and bursty states due to the on-off spatiotemporal intermittency in a one-dimensional model of nonlinear waves correspond, respectively, to nonattracting coherent structures with higher and lower degrees of amplitude-phase synchronization. In this paper we extend these results to a three-dimensional model of magnetized Keplerian shear flows. Keeping the kinetic Reynolds number and the magnetic Prandtl number fixed, we investigate two different intermittent regimes by varying the plasma beta parameter. The first regime is characterized by turbulent patterns interrupted by the recurrent emergence of a large-scale coherent structure known as two-channel flow, where the state of the system can be described by a single Fourier mode. The second regime is dominated by the turbulence with sporadic emergence of coherent structures with shapes that are reminiscent of a perturbed channel flow. By computing the Fourier power and phase spectral entropies in three-dimensions, we show that the large-scale coherent structures are characterized by a high degree of amplitude-phase synchronization.Comment: 17 pages, 10 figure

Automating Self Evaluations for Software Engineers

Software engineers frequently compose self-evaluations as part of employee perfor- mance reviews. These evaluations can be a key artifact for assessing a software engineer’s contributions to a team and organization, and for generating useful feed- back. Self-evaluations can be challenging because a) they can be time consuming, b) individuals may forget about important contributions especially when the review period is long such as a full year, c) some individuals can consciously or unconsciously overstate their contributions, and d) some individuals can be reluctant to describe their contributions for fear of appearing too proud [24]. UNBIASED, Useful New Basic Interactive Automated Self-Evaluation Demon- stration, is a web application designed to tackle the challenges of performing a self- evaluation by automatically gathering data from existing third party APIs, perform- ing an analysis on the data, and generating a self-evaluation starting point for soft- ware engineers to build off. The third party APIs currently supported are: Bitbucket, Gmail, Google Calendar, GitHub, and JIRA

Vorticity statistics and the time scales of turbulent strain

Time scales of turbulent strain activity, denoted as the strain persistence times of first and second order, are obtained from time-dependent expectation values and correlation functions of Lagrangian rate-of-strain eigenvalues taken in particularly defined statistical ensembles. Taking into account direct numerical simulation data, our approach relies on heuristic closure hypotheses which allow us to establish a connection between the statistics of vorticity and strain. It turns out that softly divergent prefactors correct the usual “1/s” strain time-scale estimate of standard turbulence phenomenology, in a way which is consistent with the phenomenon of vorticity intermittency.Indisponível

Behaviorism reception in Argentina and Brazil: A study of two universities, 1960-1970

Describimos y analizamos la recepción del conductismo en Argentina y Brasil, a través de dos ejemplos: la Universidad Nacional de San Luis y la Universidade Federal de Minas Gerais. En Argentina, desde 1960 el conductismo fue ampliamente criticado. Excepcionalmente en San Luis en la década de 1970 hubo un grupo de estudiantes y psicólogos jóvenes que fue receptivo a este modelo por razones ideológicas, profesionales y científica. En Brasil, durante esas décadas, la creación de carreras de grado de psicología comenzó a extenderse. El conductismo circuló a través del laboratorio didáctico del análisis del comportamiento. La recepción del conductismo en estos países nos ayuda a entender la circulación del conocimiento psicológico en diferentes lugares. También nos muestra cómo cada uno de estos sitios ha incorporado el conductismo en su propio contexto.e are describing and analyzing the reception of behaviorism in Argen- tina and Brazil in the 1960s and 1970s. We look deeply at two examples: the Universidad Nacional de San Luis and the Universidade Federal de Minas Gerais. In Argentina, the first psychological courses took place during the late 1950s and early 1960s when behaviorism was widely criticized. In the 1970s, exceptionally in San Luis, there was a group of students and young psychologists that were receptive to its model for ideological, professional and scientific reasons. In Brazil, during those decades, the creation of psychology undergraduate courses started to spread. Behaviorism has circulated through the didactic laboratory of beha- vior analysis in those psychology courses. The reception of behaviorism in these countries helps us to understand the circulation of psychological knowledge in different places. It also shows us how each one of these places incorporated behaviorism uniquely into its own context.Fil: Polanco, Fernando Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Humanas. Departamento de Psicologia. Laboratorio de Investigación en Ciencias del Comportamiento; ArgentinaFil: Lopes Miranda, Rodrigo . Universidade Federal do Minas Gerais; Brasi

Environmental regulation and international trade patterns for agro-industrial under a South-North Perspective

This paper aims at examining the relation between the international trade and the environment, particularly focused on sensitive agribusiness sectors. It consists on an empirical test to the conflicting positions supported by economists, some following the traditional approach (trade-off or neoclassical), while others supporting the Porter’s hypothesis, which considers that impacts of the stricter environmental regulation can benefit the trade competitiveness. A Heckscher-Ohlin- Vanek model was applied to net exports as the dependent variable. The agricultural products analyzed were total agriculture, rice, maize, soybean, wheat, dairy and swine; run for 97 countries, divided as developing and developed, in a cross-section approach. This modeling allows including the environmental endowment as explanatory variables. Moreover the Environmental Performance Index (Esty et al, 2008) was also tried as explanatory variables in order to catch any effect of the environmental regulation on the trade patterns. Results were not conclusively as they show that the net exports of the selected products, considered environmentally sensitive, can be affected even positively or negatively (neoclassical approach) by the environmental regulation. The results depend on the products. A remarkable outcome to highlight is that the dummy for developing countries and developed countries was significant, pointing that for rice, for example, it makes difference being a developing country, as well as it does for wheat, being a developed country.Trade, environmental regulation, agribusiness, Environmental Economics and Policy, International Relations/Trade,

Unusual signals in a halo catheter: what is the mechanism?

In this "featured arrhythmia" article we present a set of unusual intracardiac electrode tracings that were recorded in a patient with typical clockwise flutter but a very dilated right atrium. The potential mechanism underlying this phenomenon is discussed with reference to the current literature

Karyotype description of Cephalotrigona femorata Smith (Hymenoptera: Apidae) and the C-banding pattern as a specific marker for Cephalotrigona

Cephalotrigona femorata (Smith, 1854) was submitted to cytogenetic techniques to study and describe its karyotype. Conventional staining allowed the counting (2n=34) and observation of chromosome morphology. The amount and distribution of heterochromatin in this species was different from Cephalotrigona capitata (Smith, 1854), another species of the genus already analyzed. Our results indicate that heterochromatin a potential marker for the genus, at least for the species found in Brazil. This region was marked by DAPI, revealing a high content of A:T. The CMA3 marked two pairs, and it seems to be  polymorphic in one pair

Factores neuropsicológicos que predicen la funcionalidad en adultos mayores

133 p.Este estudio tuvo como propósito fundamental investigar las características del envejecimiento cognitivo en distintos grupos de adultos mayores. Se evaluaron 44 sujetos, distribuidos en 3 grupos: 14 sujetos con escolaridad básica, 16 con escolaridad media y 14 con escolaridad alta, con el fin de estudiar las variables cognitivas a través de la aplicación de una batería neuropsicológica. Los resultados de los análisis indicaron una fuerte asociación entre funcionalidad y memoria de trabajo, observándose que a medida que aumenta el rendimiento en memoria de trabajo, disminuye el nivel de deterioro funcional en adultos mayores. En relación a los factores que predicen la funcionalidad e inteligencia en los adultos mayores, se encontró que las funciones ejecutivas actúan como predictor de la funcionalidad en este grupo. Los hallazgos encontrados en esta investigación entregaron evidencia de que las funciones ejecutivas y la memoria episódica son efectivamente los factores que mejor predicen la funcionalidad y la inteligencia en los adultos mayores, denotándose como potenciales y útiles medidas de evaluación en personas de este segmento con deterioro. Palabras claves: envejecimiento, memoria, inteligencia inteligencia fluida,funcionalidad./ABSTRACT:The purpose of this study was to investigate the characteristics of cognitive aging in elderly, equally distributed according to their level of instruction. 44 subjects were evaluated in order to identify their cognitive variables through the application of a neuropsychological battery; they were distributed in three groups:14 subjects with elementary education completed, 16 subjects with high education completed, and 14 subjects with tertiary education completed. The results showed a positive and significant correlation between functionality and working memory,that is, a lower performance in working memory is related with a greater functional deterioration. In relation to the factors that predict functionality in older people, it was possible to conclude that executive functions can be predictors of functionality in this group. Evidence showed that executive functions and episodic memory are predictors of functionality and intelligence in the elderly, becoming potential and useful evaluation measures in the assessment of this group.Key words: aging, memory, fluent intelligence, functionin