We develop an analytically solvable three-state discrete-time minimal Brownian ratchet (MBR), where the transition probabilities between states are asymmetric. By solving the master equations, we obtain the steady-state probabilities. Generally, the steady-state solution does not display detailed balance, giving rise to an induced directional motion in the MBR. For a reduced two-dimensional par...

ABSTRACT We report on results of spectropolarimetry the afterglow long gamma-ray burst GRB 191221B, obtained with SALT/RSS and VLT/FORS2, as well photometry from two telescopes in MASTER Global Robotic Network, at MASTER-SAAO (South Africa) MASTER-OAFA (Argentina) stations. Prompt optical emission was detected by 38 s after alert, which dimmed a magnitude (white-light) ∼10–16.2 mag over period ...

Vacuum oscillations are considered for the combined solar neutrino observations, including the Kamiokande II spectrum data and incorporating theoretical uncertainties and their correlations. Despite the conceptual difficulty of the fine tuning between the neutrino parameters and the Sun-Earth distance, 2-flavor vacuum oscillations provide phenomenologically acceptable solutions. There are allow...

We propose a sufficient condition for invertibility of a polynomial mapping function defined on a cube or simplex. This condition is applicable to finite element analysis using curved meshes. The sufficient condition is based on an analysis of the Bernstein-Bézier form of the columns of the derivative. 1 Invertibility of polynomial mapping functions In finite element analysis, it is common to s...

We determine parameters for MSW and vacuum oscillations (active and sterile neutrinos) that are allowed by separate, and collective, imposition of the constraints from total event rates in the chlorine, GALLEX, SAGE, and SuperKamiokande experiments (504 days), the SuperKamiokande energy spectrum, and the SuperKamiokande zenith-angle dependence. The small mixing angle MSW solution is acceptable ...

The first KamLAND results are in a very good agreement with the predictions made on the basis of the solar neutrino data and the LMA realization of the MSW mechanism. We perform a combined analysis of the KamLAND (rate, spectrum) and the solar neutrino data with a free boron neutrino flux fB. The best fit values of neutrino parameters are ∆m2 = 7.3 · 10−5 eV2, tan2 θ = 0.41 and fB = 1.05 with t...

Electronic cam motion involves velocity tracking control of the master motor and trajectory generation of the slave motor. Special concerns such as the limits of the velocity, acceleration, and jerk are beyond the considerations in the conventional electronic cam motion control. This study proposes the curve-fitting of a Lagrange polynomial to the cam profile, based on trajectory optimization b...

Abstract In order to study the mechanical properties of thermal aging composite modified double-base propellant (CMDB), tensile CMDB were investigated at four temperatures (323, 293, 273, 253 K) and different strain rates (3.3 × 10- 5 - 3.3 2 s −1 ). Uniaxial tests carried out on samples with time (0,10,20,35,50,65,80,100 d). The after studied. results show that maximum strength decreases time,...