Perfect Fluid Quantum Anisotropic Universe: Merits and Challenges

The present paper deals with quantization of perfect fluid anisotropic cosmological models. Bianchi type V and IX models are discussed following Schutz's method of expressing fluid velocities in terms of six potentials. The wave functions are found for several examples of equations of state. In one case a complete wave packet could be formed analytically. The initial singularity of a zero proper volume can be avoided in this case, but it is plagued by the usual problem of non-unitarity of anisotropic quantum cosmological models. It is seen that a particular operator ordering alleviates this problem.Comment: 13 pages, 4 figures; Accepted for publication in Gen Relativ Gravi

2-Amino­benzothia­zolium 2,4-dicarboxy­benzoate monohydrate

Cocrystallization of 2-amino­benzothia­zole with benzene-1,2,4-tricarboxylic acid in a mixed solvent affords the title ternary cocrystal, C7H7N2S+·C9H5O6 −·H2O, in which one of the carboxyl groups of the benzene­tricarboxylic acid is deproton­ated and the heterocyclic N atom of the 2-amino­benzothia­zole is protonated. In the crystal, inter­molecular N—H⋯O and O—H⋯O hydrogen-bonding inter­actions stabilize the packing

Estudo sobre os crit?rios de decis?o na implanta??o do sistema de processo administrativo eletr?nico

V?rias iniciativas t?m sido desenvolvidas nos ?ltimos anos com o objetivo de criar uma infraestrutura p?blica de processos administrativos eletr?nicos a fim de superar as dificuldades existentes na gest?o p?blica. E, esse passo tem sido inovador pois visa melhorias no desempenho dos processos, possibilitando agilidade, produtividade, redu??o dos custos e satisfa??o dos usu?rios. Desta forma, este estudo prop?s estudar os crit?rios de decis?o na implanta??o do Sistema de Processo Administrativo Eletr?nico. Para isso realizou-se uma pesquisa bibliogr?fica e descritiva acerca dos assuntos que rodeiam o tema, utilizando como instrumento de coleta de dados um roteiro de observa??o e a observa??o direta intensiva para atingir os objetivos espec?ficos. Por fim, como resultado conseguiu-se identificar os crit?rios observados na ado??o de sistemas de informa??es e aqueles que devem ser considerados no processo de implanta??o de sistemas informatizados de gest?o arquiv?stica de documentos

Straightforward Inference of Ancestry and Admixture Proportions through Ancestry-Informative Insertion Deletion Multiplexing

Ancestry-informative markers (AIMs) show high allele frequency divergence between different ancestral or geographically distant populations. These genetic markers are especially useful in inferring the likely ancestral origin of an individual or estimating the apportionment of ancestry components in admixed individuals or populations. The study of AIMs is of great interest in clinical genetics research, particularly to detect and correct for population substructure effects in case-control association studies, but also in population and forensic genetics studies