Super-simple $(v,5,2)$ directed designs and their smallest defining sets with its application in LDPC codes

2010 International Conference on Intelligent and Advanced Systems, 2010

IEEE Transactions on Communications, 2005

Journal of Communications Software and Systems

This survey paper provides fundamentals in the design of LDPC codes. To provide a target for the code designer, we first summarize the EXIT chart technique for determining(near-)optimal degree distributions for LDPC code ensembles. We also demonstrate the simplicity of representing codes by protographs and how this naturally leads to quasi-cyclic LDPC codes. The EXIT chart technique is then extended to the special case of protograph-based LDPC codes. Next, we present several design approaches for LDPC codes which incorporate one or more accumulators, including quasi-cyclic accumulatorbased codes. The second half the paper then surveys severalalgebraic LDPC code design techniques. First, codes based on finite geometries are discussed and then codes whose designs are based on Reed-Solomon codes are covered. The algebraic designs lead to cyclic, quasi-cyclic, and structured codes. The masking technique for converting regular quasi-cyclic LDPC codes to irregular codes is also presented....

2007 IEEE International Symposium on Information Theory, 2007

Líderes. 100 Ideias para Portugal, 2024

Leaders. 100 Ideas for Portugal: From Economy to Politics and their often supervenient false dichotomies. Internationalisation: Democracy and Cosmopolitanism. From Collaboration with our Allies to an All-Embracing Inclusiveness.

Governança Transversal dos Direitos Fundamentais, 2016

A obra é produto de pesquisa realizada entre os anos de 2012 e 2015 nas universidades de Brasília, Harvard e Oxford, e parte de 55 casos da Comissão e da Corte Interamericana de Direitos Humanos e das jurisdições nacionais da Argentina, Brasil, Chile, México e Uruguai para analisar como a relação entre ordens constitucionais domésticas e os regimes internacionais de direitos humanos tem propiciado o surgimento de espaços transversais de governança dos direitos fundamentais e a emergência de novos direitos e de novos atores constitucionais, desafiando pressupostos das teorias clássicas do Direito Constitucional e do Direito Internacional Público. PDF completo do livro de 2016 (Rio de Janeiro: Lúmen Júris), esgotado.

Leidschrift, 2023

Throughout the early modern period, Europe remained haunted by the religious tensions that had erupted from the Reformation. Despite the Peace of Augsburg (1555), the Edict of Nantes (1598) and the Peace of Westphalia (1648), which put an end to decades of religious wars, violence and persecution persisted well beyond. The Enlightenment and the spread of tolerationist ideas in the eighteenth century should not be regarded as the end of religious violence, but instead as a reminder that religious violence remained very much a reality in this period. Among the best-known examples of religious persecution in the eighteenth century are the Camisards, the Waldensians, the ‘Poor Palatines’, the Salzburgers, the Moravians, the Gordon and Priestley riots, to name just a few. In France, the revocation of the Edict of Nantes in 1685 revived religious tensions in the Protestant provinces of Languedoc and Dauphiné after nearly a century of tolerance. Beside causing the exile of some 200,000 French Protestants towards northern Europe, the Revocation opened a century-long era of clandestinity and discrimination that would last until the French Revolution. Historians generally distinguish between three phases in this period, even though the intensity of the persecution varied between provinces. The years 1685-1715 were the most violent, marked by forced conversions, brutal persecution and the Camisards’ revolt. The second phase, from 1715 to the early 1760s, corresponds to the organised revival of the French Protestant Church through clandestine assemblies and synods and the gradual decline of state persecution; and the third phase, from the early 1760s to the French Revolution, a return to a de facto religious tolerance. This paper surveys the plight of French Protestants from the revocation of the Edict of Nantes to the French Revolution. It nuances the grand narrative of a steady path towards religious toleration by highlighting regional disparities and integrating foreign – mostly Dutch – sources. It argues overall that, despite the death of Louis XIV in 1715 and the role of the Calas affair in changing public opinion, anti-Calvinist sentiments and discriminations remained vivid in southern France until the French Revolution.