Results 31 to 40 of about 80,117 (291)
Robotics, 2022 Improving the strategies employed to control robotic arms is of great importance because of the increase in their use in advanced supervisory control strategies, such as digital twins.
Jessica Villalobos +2 more
doaj +1 more source
Stationary non-axisymmetric configurations of magnetized singular isothermal discs [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We construct both aligned and unaligned (logarithmic spiral) stationary configurations of nonaxisymmetric magnetohydrodynamic (MHD) disks from either a full or a partial razor-thin power-law axisymmetric magnetized singular isothermal disk (MSID) that is embedded with a coplanar azimuthal magnetic field $B_ $ of a non-force-free radial scaling $r^{-1 ...
openaire +2 more sources
String Webs from Field Theory [PDF]
, 2001 The spectrum of stable electrically and magnetically charged supersymmetric particles can change discontinuously as one changes the vacuum on the Coulomb branch of gauge theories with extended supersymmetry in four dimensions.
Argyres, Philip C., Narayan, K.
core +2 more sources
Frontiers in Physics, 2022 Atomic gases tightly trapped near the focus of an electromagnetic wave interact with photons that exhibit a complex structure, displaying strong gradients of field amplitude and local polarization that can lead to topological phase singularities.
R. Gutiérrez-Jáuregui, R. Jáuregui
doaj +1 more source
The Constraints in Spherically Symmetric General Relativity II --- Identifying the Configuration Space: A Moment of Time Symmetry [PDF]
, 1995 We continue our investigation of the configuration space of general relativity begun in I (gr-qc/9411009). Here we examine the Hamiltonian constraint when the spatial geometry is momentarily static (MS).
B. W. DeWitt +15 more
core +2 more sources
Configuring Polarization Singularity Array Composed of C-Point Pairs
IEEE Photonics Journal, 2022 The generation and topological configuration of double-layered polarization singularity array (PSA) having paired C-points of opposite topological index through superposing three Laguerre-Gaussian (LG) component beams with orthogonal linear polarization ...
Xinglin Wang +8 more
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
$\mu_p$- and $\alpha_p$-actions on K3 surfaces in characteristic $p$
, 2021 We consider $\mu_p$- and $\alpha_p$-actions on RDP K3 surfaces (K3 surfaces with rational double point singularities allowed) in characteristic $p > 0$. We study possible characteristics, quotient surfaces, and quotient singularities.
Matsumoto, Yuya
core
Self-Motions of General 3-RPR Planar Parallel Robots [PDF]
, 2008 This paper studies the kinematic geometry of general 3-RPR planar parallel robots with actuated base joints. These robots, while largely overlooked, have simple direct kinematics and large singularity-free workspace. Furthermore, their kinematic geometry
Bonev, I.A. +11 more
core +5 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song +15 more
wiley +1 more source