A unified framework for the integration of the artificial potential field (APF) theory and the navigation for the search of sensory target sources is presented. This global framework is based on modelling both APF navigation and sensory search as a functional optimization problem, making possible to apply a simple gradient operator that allows a unified navigation. The novel idea of generating ...

Purpose: Myocardial delayed enhancement (MDE) is commonly used to assess viability of myocardial tissue. An ECG gated, segmented inversion recovery (IR) fast gradient recalled echo (FGRE) or a steady-state free precession (SSFP) sequence is used for imaging, 15-20 minutes after administration of Gadolinium-based contrast. Multiple slices are typically acquired in successive breath-holds. Single...

We analyze a two-stage implicit-explicit Runge–Kutta scheme for time discretization of advection-diffusion equations. Space discretization uses continuous, piecewise affine finite elements with interelement gradient jump penalty; discontinuous Galerkin methods can be considered as well. The advective and stabilization operators are treated explicitly, whereas the diffusion operator is treated i...

The properties of a relatively uncommon regime of fluid dynamics, low Mach number compressible flow are investigated. This regime, which is characterized by an exceptionally large tube aspect ratio L/d ~ 106 leads to highly subsonic flows in which friction dominates inertia. Even so, because of the large aspect ratio, finite pressure, temperature, and density gradients are required, implying th...

A microbial fuel cell (MFC) is a device that generates electricity from the microbial degradation of organic and inorganic substrates. Constructed wetlands (CWs) are natural wastewater treatment systems that constitute a suitable technology for the sanitation of small communities. The synergy between MFCs and CWs is possible because of the presence of organic matter in CWs due to wastewater cha...

Theoretical research has numerous challenges, particularly about modeling structures, unlike experimental analysis, which explores the mechanical behavior of complex structures. Therefore, this study suggests a new model for functionally graded shell structures called “Tri-coated FGM” using spatial variation material properties to investigate free vibration response incorporating porosities and...

A study of the radial gradients driven neoclassical transport for fast ions, produced by isotropic source, in an axisymmetric toroidal system is present. The governing equation, the bounce averaged Fokker-Planck equation which contains both effects of the pitch angle scattering and the drag, is solved by utilizing the eigenfunction technique in cooperation with a rigorous numerical treatment. T...

The use of wind turbines to generate electricity has increased in recent years. One of the most important parts of a wind turbine is the foundation, which should be designed accurately because it is influenced by difference forces. Soil cannot carry tension stress; thus, when a wind turbine foundation is applied eccentricity forces, a gap appears between the soil and foundation. The gap will ha...

Bayesian particle filters have become popular for tracking human motion in cluttered scenes. The most commonly used filters suffer from two drawbacks. First, the prior used for the filtering step is often poor due to relatively large, poorly modelled inter-frame motion. Second, the use of the prior as an importance function results in inefficient sampling of the posterior. The use of the auxili...