Results 61 to 70 of about 79,822 (189)
Cosmological singularities in brane gravity
Nuclear Physics BWe present a comprehensive study of cosmological singularities within the framework of Covariant Extrinsic Gravity (CEG), addressing both the initial Big Bang singularity and potential finite-time future singularities.
R. Jalalzadeh +2 more
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Kinematically Redundant Octahedral Motion Platform for Virtual Reality Simulations
, 2017 We propose a novel design of a parallel manipulator of Stewart Gough type for virtual reality application of single individuals; i.e. an omni-directional treadmill is mounted on the motion platform in order to improve VR immersion by giving feedback to ...
B Dasgupta +11 more
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Historia Crítica, 2017 This article studies the process of the configuration of census statistics in the first half of the 20th century in Colombia. It indicates the singularities of the production and uses of these figures, and describes the problems that the Colombian state ...
Victoria Estrada Orrego
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Geometric and algebraic classification of quadratic differential systems with invariant hyperbolas
Electronic Journal of Differential Equations, 2017 Let QSH be the whole class of non-degenerate planar quadratic differential systems possessing at least one invariant hyperbola. We classify this family of systems, modulo the action of the group of real affine transformations and time rescaling ...
Regilene D. S. Oliveira +3 more
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Inverted Pendulum Nonlinear Controllers Using Two Reaction Wheels: Design and Implementation
IEEE Access, 2020 Reaction wheels have been extensively used to control and stabilize a wide range of applications due to the angular momentum exchange that they provide to mechanical systems.
Joao Francisco Silva Trentin +3 more
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Soliton sheets of Bose–Einstein condensates in optical lattices
New Journal of PhysicsSoliton sheets are observed in Bose–Einstein condensates in optical lattice which are formed by superposition of condensates occupying different single-particle states. These structures consist of one-dimensional stationary solitons distributed in the x -
Shu-Song Wang, Su-Ying Zhang
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Verification and Generation of Safe Straight Paths for a 4-DOF Spherical Manipulator
Tikrit Journal of Engineering Sciences, 2011 Sometimes in a manufacturing environment, a robotic arm is wanted to move in a straight path such as welding, painting and assembling. This straight path causes the manipulator to actuate all or most of its joints in the same time to track the path ...
Rawand Ehsan J.T
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Dynamics of perturbed singular configuration of three point vortices [PDF]
Nelineinaya Dinamika, 2008 Summary: Motion of three point vortices in a perturbed singular configuration is studied numerically and analytically. Several cases of the motion are analyzed according to location of the vorticity center to the orbit of one of the vortices. For each of these cases the trajectories of vortices are calculated.
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Experimental identification of topological defects in 2D colloidal glass
Nature CommunicationsTopological defects are singularities within a field that cannot be removed by continuous transformations. The definition of these irregularities requires an ordered reference configuration, calling into question whether they exist in disordered ...
Vinay Vaibhav +5 more
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Configuration Space Singularities of The Delta Manipulator
, 2018 We investigate the configuration space of the Delta-Manipulator, identify 24 points in the configuration space, where the Jacobian of the Constraint Equations looses rank and show, that these are not manifold points of the Real Algebraic Set, which is defined by the Constraint Equations.
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