Results 21 to 30 of about 83,771 (308)
Brain substrates of behavioral programs associated with self-regulation
Frontiers in Psychology, 2010 The present paper proposes that four neuromodulator systems underpin highly generalized behavioral sets, but each targets either dorsomedial or ventrolateral cortical systems, where it produces its effects in either a proactive or reactive orientation to
Mattie Tops +8 more
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Circular Geodesics Stability in a Static Black Hole in New Massive Gravity
Galaxies, 2020 We study the existence and stability of circular geodesics in a family of asymptotically AdS static black holes in New Massive Gravity theory. We show that the mathematical sign of the hair parameter determines the existence of such geodesics.
Andrés Aceña +2 more
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Simple Closed Quasigeodesics on Tetrahedra
Information, 2022 Pogorelov proved in 1949 that every convex polyhedron has at least three simple closed quasigeodesics. Whereas a geodesic has exactly a π surface angle to either side at each point, a quasigeodesic has at most a π surface angle to either side at each ...
Joseph O’Rourke, Costin Vîlcu
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Co-accelerated particles in the C-metric [PDF]
, 2000 With appropriately chosen parameters, the C-metric represents two uniformly accelerated black holes moving in the opposite directions on the axis of the axial symmetry (the z-axis). The acceleration is caused by nodal singularities located on the z-axis.
A Pravdová +9 more
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Integrability of Geodesics of Totally Geodesic Metrics [PDF]
, 2019 Analysis of the geodesics in the space of signature $(1,3)$ that splits in two-dimensional distributions resulting from the Weyl tensor eignespaces - hyperbolic and elliptic ones - described in [V. Lychagin, V. Yumaguzhin, \emph{Differential invariants and exact solutions of the Einstein equations}, Anal.Math.Phys.
Maria Ulan, Radoslaw Antoni Kycia
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Transcranial electrical neuromodulation based on the reciprocity principle
Frontiers in Psychiatry, 2016 A key challenge in multi-electrode transcranial electrical stimulation (TES) or transcranial direct current stimulation (tDCS) is to find a current injection pattern that delivers the necessary current density at a target and minimizes it in the rest of ...
Mariano eFernandez Corazza +8 more
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Dense array EEG (dEEG) source estimation in neocortical epilepsy
Frontiers in Neurology, 2013 Rationale : Dense array EEG (dEEG) evenly covers the whole head surface with over 100 channels contributing to more accurate electrical source imaging due to the higher spatial and temporal resolution.
Madoka eYamazaki +6 more
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Focusing of geodesic congruences in an accelerated expanding Universe [PDF]
, 2012 We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics.
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THE MAIN PROBLEMS IN ARCHITECTURAL MANAGEMENT OF SETTLEMENTS TERRITORIES
Управленческие науки, 2015 The article considers the major management problems of settlements territories of different kinds in contemporary market conditions, defines the management structure of architectural activity at various designing stages.
O. Drogitskaya
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The local and global geometrical aspects of the twin paradox in static spacetimes: I. Three spherically symmetric spacetimes [PDF]
, 2014 We investigate local and global properties of timelike geodesics in three static spherically symmetric spacetimes. These properties are of its own mathematical relevance and provide a solution of the physical `twin paradox' problem. The latter means that
Golda, Zdzisław A. +1 more
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