this article addresses an efficient and novel method for singularity-free path planning and obstacle avoidance of parallel manipulator based on neural networks. a modified 4-5-6-7 interpolating polynomial is used to plan a trajectory for a spherical parallel manipulator. the polynomial function which is smooth and continuous in displacement, velocity, acceleration and jerk is used to find a pat...

Uncertain hypothesis test is a statistical tool that uses uncertainty theory to determine whether some hypotheses are correct or not based on observed data. As an application of uncertain test, this paper proposes method differential equation fits the data not. In order demonstrate method, numerical examples provided. Finally, both currency model and stochastic used US Dollar Chinese Yuan (USD–...

Chance theory is a mathematical methodology for dealing with indeterminatephenomena including uncertainty and randomness.Consequently, uncertain random variable is developed to describe the phenomena which involveuncertainty and randomness.Thus, uncertain random variable is a fundamental concept in chance theory.This paper provides some practical quantities to describe uncertain random variable...

Abstract This special issue of Cadernos EBAPE.BR sought to provoke a reflection focused on uncertain consumption practices in an future. While prior marketing and consumer research has explored framed by institutionalized, known, more or less predictable context, the set articles approved this edition reveals different nuances. From experiential accounts grief role music coping with struggles i...

this paper presents the kinematic analysis and the development of a 4-degree-of-freedom serial-parallel mechanism for large commercial vehicle driving simulators. the degrees of freedom are selected according to the target maneuvers and the structure of human motion perception organs. several kinematic properties of parallel part of the mechanism under study are investigated, including the inve...

This work is concerned with modeling and control of a vehicle which is assumed to be a body with four wheels. The available control is the vector of torque on the wheels. The aim of the paper is to design a control of the vehicle yaw rate in cornering motions at specified longitudinal speed and steering angle. This problem is one aspect of those appearing in the need of safer, more drivable, an...

During the main phase of evolution a protoplanetary disk, accretion regulates inner-disk properties, such as temperature and mass distribution, in turn, physical conditions associated with planet formation. The driving mechanism behind remains uncertain; however, one promising is removal fraction angular momentum via magnetohydrodynamic (MHD) disk wind launched from inner tens astronomical unit...

The total mass of the Local Group (LG) and masses its primary constituents, Milky Way M31, are important anchors for several cosmological questions. In recent years, independent measurements have consistently yielded halo close to $10^{12} \mathrm{M_\odot}$ MW, $1-2 \times 10^{12} while estimates derived from pair's kinematics via `timing argument' a combined around $5 \mathrm{M_\odot}$. Here, ...