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Chaotic Dynamics in a Low-Energy Transfer Strategy to the Equilateral Equilibrium Points in the Earth-Moon System
(World Scientific Publ Co Pte Ltd, 2015-05-01)
In the frame of the equilateral equilibrium points exploration, numerous future space missions will require maximization of payload mass, simultaneously achieving reasonable transfer times. To fulfill this request, low-energy ...
Stefan problems for the diffusion-convection equation with temperature-dependent thermal coefficients
(Pergamon-Elsevier Science Ltd, 2021-09)
Different one-phase Stefan problems for a semi-infinite slab are considered, involving a moving phase change material as well as temperature dependent thermal coefficients. Existence of at least one similarity solution is ...
Multipeak solutions to the Bahri-Coron problem in domains with a shrinking hole
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2009)
We construct positive and sign changing multipeak solutions to the Pure critical exponent problem in a bounded domain with a shrinking hole, having a peak which concentrates at some point inside the shrinking hole (i.e. ...
Diagnosis of Organizational Soft Problems in a Peruvian Financial Institution by Systemic Thinking
(SPRINGER/PLENUM PUBLISHERS, 2009)
Managing financial institutions in an underdeveloped economic context has become a real challenge nowadays. In order to reach the organization`s planned goals, they have to deal with structural, behavioral and informational ...
Bayesian estimation of dynamic mixture models by wavelets
(Universidade Federal de São CarlosUFSCarPrograma Interinstitucional de Pós-Graduação em Estatística - PIPGEsCâmpus São Carlos, 2023-04-20)
Gaussian mixture models are used successfully in various statistical learning applications. The good results provided by these models encourage several generalizations of them. Among possible adaptations, one can assume a ...
Online change point detection for random dot product graphs.
(IEEE, 2021)
Given a sequence of random graphs, we address the problem of online monitoring and detection of changes in the underlying data distribution. To this end, we adopt the Random Dot Product Graph (RDPG) model which postulates ...
Alternative transfer to the Earth-Moon Lagrangian points L4 and L5 using lunar gravity assist
(Elsevier B.V., 2014-02-01)
Lagrangian points L4 and L5 lie at 60 degrees ahead of and behind the Moon in its orbit with respect to the Earth. Each one of them is a third point of an equilateral triangle with the base of the line defined by those two ...
SOCIAL-ENVIRONMENTAL PROBLEMS AND THE POLITICAL DIMENSION OF SPACE
(Univ Federal Fluminense, 2016-01-01)
Social-environmental issues have gained notoriety in the last decades. There is a growing concern in some aspects and on different scales, mainly in regard to global climate change and its results, not only related to the ...
In pursuit of impact: From research questions to problem formulation in entrepreneurship research
(2022)
In this paper, we address recent calls to increase the societal relevance of entrepreneurship research. We explore how entrepreneurship researchers and practitioners work together in the formulation of a research problem ...