The use of the two-body energy to study problems of escape/capture Ernesto Vieira Neto1

The problem of escape/capture is encountered in many problems of the celestial mechanics -the capture of the giants planets irregular satellites, comets capture by Jupiter, and also orbital transfer between two celestial bodies as Earth and Moon. To study these problems we introduce an approach which is based on the numerical integration of a grid of initial conditions. The two-body energy of the particle relative to a celestial body defines the escape/capture. The trajectories are integrated into the past from initial conditions with negative two-body energy. The energy change from negative to positive is considered as an escape. By reversing the time, this escape turns into a capture. Using this technique we can understand many characteristics of the problem, as the maximum capture time, stable regions where the particles cannot escape from, and others. The advantage of this kind of approach is that it can be used out of plane (that is, for any inclination), and with perturbations in the dynamics of the n-body problem. © 2005 International Astronomical Union.

Da inquisição à ficção: as narrativas do inquérito e os processos da escrita em António Vieira e Lobo Antunes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Os jesuítas e a escravidão africana no Brasil colonial: um estudo sobre os escritos de Antonio Vieira, André João Antonil e Jorge Benci: sécs. XVII e séc. XVIII

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relato e realidade nas cartas brasileiras do Padre Antônio Vieira: uma visão cognitivista e cultural

Pós-graduação em Linguística e Língua Portuguesa - FCLAR

Da ortografia para a fonética e a fonologia nos Sermões do Padre Antônio Vieira

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A oralidade em Luuanda de Luandino Vieira e Alexandree outros heróis de Graciliano Ramos

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

José Geraldo Vieira (1987-1997): fortuna crítica

Pós-graduação em Letras - FCLAS

Vieira e os excluídos do reino de Deus: protestantes, negros e mulheres

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Álvaro Vieira Pinto: massas, nacionalismo e cultura na realidade nacional

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O 'pretoguês' e a literatura de José Luandino Vieira

O texto examina a elaboração artística do 'pretoguês' - forma pejorativa com que oscolonizadores portugueses denominavam a linguagem híbrida português/quimbundo utilizada pela população angolana - na obra do escritor angolano José Luandino Vieira.

O acervo sobre Didática da Escola Estadual Leônidas do Amaral Vieira : contribuições para a história das disciplinas escolares

The article discusses characteristics of the library collection of the Escola Estadual Leônidas do Amaral Vieira, from Santa Cruz do Rio Pardo (SP), which subsidized the research on history of didactics at the Instituto de Educação of this school, from 1953 to 1975. We present aspects of the school and its collection about didactics in light of theoretical and methodological aspects related to the history of school subjects.

Estudo urbano e ambiental da circulação urbana do bairro de Santo Amaro, cidade de São Paulo

This work is resulted of studies about the urban circulation in the modern cities. It was developed from two case studies: the city of São Paulo, specifically Santo Amaro's neighborhood and the city of Regensburg in Germany. The urban circulation of these places was analyzed starting from the premise that the daily of the inhabitants is a relevant factor to be considered. It was researched the types of transportation, the accessibility, and the clearance of public transportations. One of the main purposes of this work was to present general guidelines for the improvement urban circulation in the modern cities, as well as to supply didactic material that contribute to the reflection about urban circulation focusing priorly on the problems of traffic of driving force vehicles

Mil años de ciencia ficción hermética latinoamericana [1492-2500]: En tres episodios: Borges, la conspiración; Sor Juana y Antônio Vieira, íntimos herejes; Bizarros profetas ciberculturales

Pós-graduação em Letras - IBILCE

A história da didática no Instituto de Educação Leônidas do Amaral Vieira - Santa Cruz do Rio Pardo (1953-1975)

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