The effect of factors on the process chemical modification tar with formaldehyde using a sulfuric acid as catalyst has been studied. By experimental results, adequate statistical-mathematical (ESM) model developed. Based this model, optimal values have identified, bringing about penetration value and softening point modified tars. Data predicted basis ESM were compared empirical evidence tars p...

Virtually every soil "lives" in that all of its properties undergo changes with time some insignificant, but others very important. Time-dependent chemical, geomicrobiological, and mechanical processes may result in compositional and structural changes that lead to softening, stiffening, strength loss, strength gain, or altered conductivity properties. The need to predict what the properties an...

Nonlinear micro-electro-mechanical systems (MEMS) resonators open new opportunities in sensing and signal manipulation compared to their linear counterparts by enabling frequency tuning increased bandwidth. Here, we design, fabricate study drumhead exhibiting strongly nonlinear dynamics develop a reduced order model (ROM) capture response accurately. The undergo electrostatically-mediated therm...

We show how to achieve large-amplitude oscillation and good frequency stability in a nonlinear NEMS oscillator by using a softening nonlinearity to locally balance the hardening behaviour of the Duffing nonlinearity for a given motion amplitude. The case when the softening behaviour is obtained via electrostatic biasing is theoretically investigated, under parallel-plate assumptions, for a full...

Models with competing interactions, for example the ANNNI model, can have special points at which the ground state is infinitely degenerate, so-called multiphase points. Small perturbations can lift this degeneracy and give rise to infinite sequences of long-period phases. This paper compares the effect of three possible perturbations, quantum fluctuations, thermal fluctuations and the softenin...

The goal of denoising is to remove the noise while preserving the important features as much as possible. By exploring the power of parsimonious wavelet basis representation and statistical decision methods, Donoho and Johnstone [5] pioneered the wavelet shrinkage. However, the performance of traditional wavelet shrinkage is not even as good as that of a simple multiscale product method (MPM) [...

We adapt new schemes of gravitational N-body dynamics and smoothed particle hydrodynamics (SPH) to the tree N-body/SPH galactic chemodynamics code GCD+. The applied new schemes include the adaptive softening suggested by Price & Monaghan (2007), to improve the self-gravity calculation, and artificial viscosity and thermal conductivity suggested by Rosswog & Price (2007) and Price (2008), to mod...

Recently, it was pointed out that soft masses of the supersymmetric gauge theories with extra dimensions tends to a flavor conserving point, which is a desirable scenario in gravity mediation models. We point out that in 6D we must consider the anomaly free condition in addition to the condition on the asymptotic freedom. From this, we find E6, E7 and E8 are natural candidates in 6D. There is n...