Results 21 to 30 of about 79,822 (189)
Unified Singularity Crossing of a 3-(rR)PS Metamorphic Parallel Mechanism through Dynamic Modeling
Machines, 2023 Metamorphic parallel mechanisms can change into multiple configurations with different motion types and mobility, which consequently yield different solutions of inverse dynamics when crossing singularity.
Latifah Nurahmi +2 more
doaj +1 more source
Phase singularity annihilation in plasmonic nano-apertures via epsilon-near-zero metamaterials
APL Photonics, 2021 In this work, we performed an extensive theoretical and experimental study to unveil the underlying mechanisms related to the intensified transmittance in epsilon-near-zero (ENZ)-integrated plasmonic nano-apertures.
F. Ghasemzadeh +2 more
doaj +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2015 In this article we prove a classification theorem (Main theorem) of real planar cubic vector fields which possess two distinct infinite singularities (real or complex) and eight invariant straight lines, including the line at infinity and including ...
Cristina Bujac, Nicolae Vulpe
doaj +1 more source
Mean directionally curved lines on surfaces immersed in R4 [PDF]
, 2003 The notion of principal configuration of immersions of surfaces into R3, due to Sotomayor and Gutierrez [16] for lines of curvature and umbilics, is extended to that of mean directional configuration for immersed surfaces in R4.
Mello, Luis Fernando
core +3 more sources
A Metaheuristic Optimization Approach for Trajectory Tracking of Robot Manipulators
Mathematics, 2022 Due to the complexity of manipulator robots, the trajectory tracking task is very challenging. Most of the current algorithms depend on the robot structure or its number of degrees of freedom (DOF).
Carlos Lopez-Franco +4 more
doaj +1 more source
A Note on Superconformal N=2 theories and Orientifolds [PDF]
, 1998 We construct the T duals of certain type IIA brane configurations with one compact dimension (elliptic models) which contain orientifold planes. These configurations realize four-dimensional $\NN=2$ finite field theories.
Aharony +33 more
core +2 more sources
DISCONNECTED REGIONS OF STABLE CIRCULAR ORBITS IN PRESENCE OF MASSIVE SCALAR FIELD
Odessa Astronomical Publications, 2017 We study circular orbits around a static spherically symmetric configuration of General Relativity in presence of a nonlinear massive scalar field (SF). The problem deals with a family of solutions to Einstein – SF equations with the SF potentials that are
O. S. Stashko, V. I. Zhdanov
doaj +1 more source
Supersymmetric Gauge Theories from Branes and Orientifold Six-planes [PDF]
, 1998 We study brane configurations in the presence of orientifold six-planes. After deriving the curves for N=2 supersymmetric SU(Nc) gauge theories with one flavor in the symmetric or antisymmetric representation and Nf fundamental flavors, we rotate the ...
Landsteiner, Karl +2 more
core +2 more sources
Q_l-cohomology projective planes and singular Enriques surfaces in characteristic two [PDF]
Épijournal de Géométrie Algébrique, 2019 We classify singular Enriques surfaces in characteristic two supporting a rank nine configuration of smooth rational curves. They come in one-dimensional families defined over the prime field, paralleling the situation in other characteristics, but ...
Matthias Schütt
doaj +1 more source
Brane Box Realization of Chiral Gauge Theories in Two Dimensions [PDF]
, 1998 We study type IIA configurations of D4 branes and three kinds of NS fivebranes. The D4 brane world-volume has finite extent in three directions, giving rise to a two-dimensional low-energy field theory.
Alishahiha +29 more
core +2 more sources