Dissipative vortex solitons in 2D-lattices

We report the existence of stable symmetric vortex-type solutions for two-dimensional nonlinear discrete dissipative systems governed by a cubic-quintic complex Ginzburg-Landau equation. We construct a whole family of vortex solitons with a topological charge S = 1. Surprisingly, the dynamical evolution of unstable solutions of this family does not alter significantly their profile, instead their phase distribution completely changes. They transform into two-charges swirl-vortex solitons. We dynamically excite this novel structure showing its experimental feasibility.Comment: 4 pages, 20 figure

Direct measurements of the magnetocaloric effect in pulsed magnetic fields: The example of the Heusler alloy Ni50_{50}Mn35_{35}In15_{15}

We have studied the magnetocaloric effect (MCE) in the shape-memory Heusler alloy Ni$_{50}$Mn$_{35}$In$_{15}$ by direct measurements in pulsed magnetic fields up to 6 and 20 T. The results in 6 T are compared with data obtained from heat-capacity experiments. We find a saturation of the inverse MCE, related to the first-order martensitic transition, with a maximum adiabatic temperature change of $\Delta T_{ad} = -7$ K at 250 K and a conventional field-dependent MCE near the second-order ferromagnetic transition in the austenitic phase. The pulsed magnetic field data allow for an analysis of the temperature response of the sample to the magnetic field on a time scale of $\sim 10$ to 100 ms which is on the order of typical operation frequencies (10 to 100 Hz) of magnetocaloric cooling devices. Our results disclose that in shape-memory alloys the different contributions to the MCE and hysteresis effects around the martensitic transition have to be carefully considered for future cooling applications.Comment: 5 pages, 4 figure

EL DESARROLLO SUSTENTABLE Y LA INSTRUMENTACIÓN DE SU PARADIGMA EN MÉXICO

Since the late 1960s the discussion about the limits of growth fueled the development of sustainable development as a paradigm that has dominated strategies and policies, including the proposal in 2012 of Green Economies. Nonetheless, progress has not been achieved, among other reasons for the absence of integrated public policies. With a general perspective, the experience of Mexico’s federal public administration and recent planning instruments is revisited, including the creation of green jobs. With such analysis the conclusion about the importance of integrated public policies is duplicated

EL DESARROLLO SUSTENTABLE Y LA INSTRUMENTACIÓN DEL PARADIGMA EN MÉXICO

Since the late 1960s the discussion about the limits of growth fueled the development of sustainable development as a paradigm that has dominated strategies and policies, including the proposal in 2012 of Green Economies. Nonetheless, progress has not been achieved, among other reasons for the absence of integrated public policies. With a general perspective, the experience of Mexico’s federal public administration and recent planning instruments is revisited, including the creation of green jobs. With such analysis the conclusion about the importance of integrated public policies is duplicated

The Devil is in the Details. Sex Differences in Simple Bargaining Games

The study of gender differences in social preferences has shown mixed results, preventing economists and other social scientists from drawing definitive conclusions on this topic. Several original investigations and experimental reviews have hypothesized that the main reason of this heterogeneity of results is the myriad of experimental designs used to study gender differences. In this paper we test this hypothesis by making male and female participants to face two different but related experimental games and two different information treatments. Through this 2x2 factorial design, we obtain results in line with some recent papers: women are sensitive to the design and context of the experiment in ways that men are not. In addition, we go further providing a well-grounded account on the importance of the context for female decision-making

The importance of various work aspects and their organiza tional consequences using Hofstede's cultural dimensions

This study examines the importance employees place on various work aspects according to their nation's relative positioning along Hofstede's four cultural dimension: power distance, individualism, uncertainty avoidance, and masculinity/feminity. Based on a cross-national sample of over 5,000 employees representing 20 countries, the results uncover differential patterns of responses by cultural groupings. The data also suggest that importance and satisfaction interactively affect several organizational consequences critería: job satisfaction, company satisfaction, intent to leave the firm, and organizational cornmitment

The linkages between business strategies and compensation policies using miles and snow's framework

This study links a multidimensional measure of compensatíon strategy to Miles and Snow's (1978) business strategies, and examines their interactive impact on firm performance. The results reported here indicate that a more mechanistic compensation strategy makes a greater contribution to firm performance among defenders, while a more organic compensation strategy makes a greater contribution to firm performance among prospector