The Development of the Brazilian Bio-electricity Market: An Historical Analysis of the Institutional Changes in the Sugarcane and Electricity Markets

Crop Production/Industries, Resource /Energy Economics and Policy,

Violence in Schools: Perspectives (and hope) from Galtung and Buber

Research into violence in schools has been growing steadily at an international level, and has shown high degrees of violence at various different levels. Given the seriousness of the problem, finding ways of responding to this issue in schools becomes an imperative for educationists. In this article, we engage with this problem by defending the view that whilst violence might be endemic in schools, there are also real possibilities for working towards different ways of being in relationship in schools. Firstly, we discuss Galtung’s understanding of violence and peace, paying particular attention to his concepts of structural and cultural violence, peacekeeping, peacemaking and peacebuilding. Secondly, we connect Galtung’s notions of peacemaking to Buber’s philosophy of dialogue, in order to make a case for an ‘epistemological shift’ which might enable individuals and communities to achieve ‘peace’. Finally, we direct our argument to the education context and put forward some concrete proposals for peacemaking in schools.This is the author accepted manuscript. The final version is available from Taylor & Francis via http://dx.doi.org/10.1080/00131857.2015.110203

Optimization of the Superconducting Linear Magnetic Bearing of a Maglev Vehicle

Considering the need for cost/performance prediction and optimization of superconducting maglev vehicles, we develop and validate here a 3D finite element model to simulate superconducting linear magnetic bearings. Then we reduce the 3D model to a 2D model in order to decrease the computing time. This allows us to perform in a reasonable time a stochastic optimization considering the superconductor properties and the vehicle operation. We look for the permanent magnet guideway geometry that minimizes the cost and maximizes the lateral force during a displacement sequence, with a constraint on the minimum levitation force. The displacement sequence reproduces a regular maglev vehicle operation with both vertical and lateral movements. For the sake of comparison, our reference is the SupraTrans prototype bearing. The results of the optimization suggest that the bearing cost could be substantially reduced, while keeping the same performances as the initial design. Alternatively, the performances could be significantly improved for the same original cost

Dressing approach to the nonvanishing boundary value problem for the AKNS hierarchy

We propose an approach to the nonvanishing boundary value problem for integrable hierarchies based on the dressing method. Then we apply the method to the AKNS hierarchy. The solutions are found by introducing appropriate vertex operators that takes into account the boundary conditions.Comment: Published version Proc. Quantum Theory and Symmetries 7 (QTS7)(Prague, Czech Republic, 2011

High-scale inflation and the tensor tilt

In this paper, we explore a novel observational signature of gravitational corrections during slow-roll inflation. We study the coupling of the inflaton field to higher-curvature tensors in models with a minimal breaking of conformal symmetry. In that case, the most general correction to the tensor two-point function is captured by a coupling to the square of the Weyl tensor. We show that these scenarios lead to a correction to the tilt of the tensor power spectrum and hence a violation of the tensor consistency condition. We arrive at the same conclusion through an analysis in conformal perturbation theory