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Relativistic rigid systems and the cosmic expansion
(Springer/Plenum Publishers, 2020-09)
We analyze the necessary conditions for a body to remain rigid in an expanding cosmological Universe. First, we establish the main theorems and definitions for having a rigid body in a general spacetime as well as the new ...
General terms and rigidity: another solution to the trivialization problem
(Universidade Estadual de Campinas. Centro de Lógica, Epistemologia e História da Ciência, 2014-06)
In this paper I am concerned with the problem of applying the notion of rigidity to general terms. In Naming and Necessity, Kripke has clearly suggested that we should include some general terms among the rigid ones, namely, ...
Exact mean field concept to compute defect energetics in random alloys on rigid lattices
(Elsevier Science Sa, 2017-04-29)
In modern materials science modeling, the evolution of the energetics of random alloys with composition are desirable input parameters for several meso-scale and continuum scale models. When using atomistic methods to ...
On equilibrium with price rigidities and rationingOn equilibrium with price rigidities and rationing
(Sociedade Brasileira de Econometria, 1984)
Motion of a rigid body in a viscous fluid
(1999)
We introduce a concept of weak solution for a boundary value problem modelling the
motion of a rigid body immersedin a viscous fluid. The time variation of the fluid’s
domain (due to the motion of the rigid body) is not ...
A new graph-based approach for document similarity using concepts of non-rigid shapes
(IMMM 2017 : The Seventh International Conference on Advances in Information Mining and Management, 2017-06-17)
Most methods used to compare text documents are based on the space vector model; however, this model does not capture the relations between words, which is considered necessary to make better comparisons. In this research, ...
On periodic self-homeomorphisms of closed orientable surfaces determined by their orders
(2016)
The fundamentals for the topological classification of periodic orientation preserving self-homeomorphisms of a closed orientable topological surface X of genus g >= 2 have been established, by Nielsen, in the thirties of ...
Simple parameters spaces analysis of roto-orbital integrable Hamiltonians for an axisymmetric rigid body
(2019-11-04)
The present work presents a test of two Hamiltonians that produce integrable models recently proposed to study the roto-orbital motion of an axisymmetric rigid body in motion under a central gravitational field. The dynamics ...
Análise e simulação de mecanismos flexíveis
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2017-06-22)
The study aims to perform the kinematic analysis of compliant mechanisms by analytical methods and thus compare with results obtained from the simulation employing the finite element method. Due to the presence of large ...