Por uma Teoria Crítica das Relações Internacionais: as contribuições de Jürgen Habermas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

As teorias das guerras preventivas e as internacionais

Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC

Gramsci e a Teoria Crítica das Relações Internacionais

This text has the following aims: a) to discuss Gramsci and Horkheimer’s epistemological status, joined authors in an theoretical approach known as Critical Theory of International Relations; b) to draft an analysis in order to show the mentioned and joined authors’ different epistemological statuses in the theoretical approach in discussion; c) to begin a reflection pointing the absence of accuracy in this approach - whose beginning happened with Canadian political scientist Robert W. Cox – due to joining different epistemological statuses and ignoring the theoretical consequences put by respective central Gramsci and Horkheimer’s concepts: hegemony and emancipation.

On the algebraic K theory of the massive D8 and M9-branes

In this paper we review some basic relations of algebraic K theory and we formulate them in the language of D-branes. Then we study the relation between the D8-branes wrapped on an orientable, compact manifold W in a massive Type IIA, supergravity background and the M9-branes wrapped on a compact manifold Z in a massive d = 11 supergravity background from the K-theoretic point of view. By interpreting the D8-brane charges as elements of K-0(C(W)) and the (inequivalent classes of) spaces of gauge fields on the M9-branes as the elements of K-0(C(Z) x ((k) over bar*) G) where G is a one-dimensional compact group, a connection between charges and gauge fields is argued to exists. This connection could be realized as a composition map between the corresponding algebraic K theory groups.

When less is better: Insights from the product mix dilemma from the Theory of Constraints perspective

Perhaps due to its origins in a production scheduling software called Optimised Production Technology (OPT), plus the idea of focusing on system constraints, many believe that the Theory of Constraints (TOC) has a vocation for optimal solutions. Those who assess TOC according to this perspective indicate that it guarantees an optimal solution only in certain circumstances. In opposition to this view and founded on a numeric example of a production mix problem, this paper shows, by means of TOC assumptions, why the TOC should not be compared to methods intended to seek optimal or the best solutions, but rather sufficiently good solutions, possible in non-deterministic environments. Moreover, we extend the range of relevant literature on product mix decision by introducing a heuristic based on the uniquely identified work that aims at achieving feasible solutions according to the TOC point of view. The heuristic proposed is tested on 100 production mix problems and the results are compared with the responses obtained with the use of Integer Linear Programming. The results show that the heuristic gives good results on average, but performance falls sharply in some situations. © 2013 Copyright Taylor and Francis Group, LLC.