This paper presents a parallel simulated annealing algorithm for solving the problem of mapping irregular parallel programs onto homogeneous processor arrays with regular topology. The algorithm constructs and uses joint transformations. These transformations guarantee a high degree of parallelism that is bounded below by d jNpj deg(Gp)+1 e, where jN p j is the number of task nodes in the mappe...

Lévy processes can capture the behaviors of return innovations on a full range of financial securities. Applying stochastic time changes to the Lévy processes randomizes the clock on which the processes run, thus generating stochastic volatilities and stochastic higher return moments. Therefore, with appropriate choices of Lévy processes and stochastic time changes, we can capture the return dy...

The mapping problem arises when the dependency structure of a parallel algorithm differs from the processor interconnection of the parallel computer or when the number of processes generated by the algorithm exceeds the number of processors available. The mapping problem (also known as task allocation) has been widely studied. We propose a new generalized mapping strategy that uses a combinatio...

This paper studies a simple nonautonomous circuit consisting of an RLC resonator, a dependent switch and a periodic pulse-train input. The circuit can exhibit chaotic behavior if an equidistant pulse-train input is applied. The dynamics can be analyzed by a mapping procedure based on a one-dimensional (1-D) return map focusing on the moments when the input is applied. If the periodic pulse-trai...

Indoor robot is a very common robot, and its main navigation method laser SLAM. In the process of detecting dynamic obstacles with SLAM, clustering effect not obvious, accuracy low, real-time performance poor. To solve this problem, sensor fusion lidar monocular camera proposed, which improves position moving obstacles. When processing data, first preprocess then use BDSCAN algorithm to cluster...

Abstract In this paper a selected type of elasto-viscoplastic constitutive equations is considered. The viscoplastic model which was proposed by Marquis generalized allowing multiple terms describing the isotropic and kinematic hardening. Furthermore, presented formulation enables one to use an arbitrary equivalent plastic strain function describe hardening behavior. What more, backstress evolu...

A new energy-dissipation-based rate-independent constitutive law within the framework of elastoplasticity coupled with damage is proposed. With this methodology, inelastic strains and stiffness degradation exhibited by quasi-brittle materials under monotonic or cyclic loading conditions are taken into account. The proposed model able to capture micro-cracks closure-reopening effects due load re...

A variational formulation of small strain ductile fracture, based on a phase-field modeling crack propagation, is proposed. The an effective stress description gradient plasticity, combined with AT1 model. Starting from established statements finite-step elastoplasticity for generalized standard materials, mixed statement consistently derived, incorporating in rigorous way update both the elast...

Abstract The accurate description of the strain rate and temperature dependent response Aluminium alloys is a perpetual quest in hot forming industry. In present study, uniaxial tension, notched tension experiments are conducted for an aluminium AA7075-T6 sheet metal at various temperatures rates. experimental campaign covers rates ranging from 0.001/s to 100/s, 20°C 360°C. We observe low sensi...

the heterogeneous fixed fleet open vehicle routing problem (hffovrp) is one of the most significant extension problems of the open vehicle routing problem (ovrp). the hffovrp is the problem of designing collection routes to a number of predefined nodes by a fixed fleet number of vehicles with various capacities and related costs. in this problem, the vehicle doesn’t return to the depot after se...