Connections between the principle of least action and optimal control are explored with a view to describing trajectories energy conserving systems, subject temporal boundary conditions, as solutions corresponding systems characteristics equations on arbitrary time horizons. Motivated by relaxation stationary for longer horizons, due loss convexity functional, problems is considered. In charact...

Molecular dynamics simulations are conducted for concentrated solutions of flexible polymers. The results are contrasted with literature dielectric spectroscopy data, in an attempt to elucidate the observed phenomena from a molecular level perspective. A bead-spring model is used and systems with chain sizes up to N5150 beads at reduced densities 0.5<r<0.8 are studied. The dimensions of the cha...

The emergence of sensor networks and distributed applications that generate data streams has created a need for Internet overlays designed for streaming data. Such stream-based overlay network (SBONs) consist of a set of Internet hosts that collect, process, and deliver stream-based data to multiple applications. A key challenge in the design and implementation of SBONs is efficient path optimi...

The noise and vibration of large oil-immersed reactor is usually controlled reduced by using high-strength pretensioned steel rods to fasten iron cores. But the effect uneven temperature increase in on pretension relaxation rarely discussed previous literatures. A combined fastening device rod disc spring designed conduct experiment this paper. And three-dimensional (3D) finite element model de...

A multiscale simulation method is used to calculate the rheological properties of entangled Nylon 6 melts, including stress relaxation modulus, storage and loss moduli, melt viscosity. The three-level approach includes all-atom, coarse-grained slip-spring models, each operating at different levels resolution encompassing a wide range length scales over nine orders magnitude in time. These model...

We discuss the non-equilibrium properties of a thermally driven micromachine consisting three spheres which are in equilibrium with independent heat baths characterized by different temperatures. Within framework linear stochastic Langevin description, we calculate time-dependent average irreversibility that takes maximum value for finite time. This time scale is roughly set spring relaxation T...

since the elderly population is increasing rapidly in developing countries which may decrease the physical activity and exercise and in turn could affect the elderly’s quality of life, this study aimed to investigate the effect of progressive muscle relaxation on the elderly’s quality of life in iran. in a randomized clinical trial, participants were randomly divided into intervention and contr...