furrow irrigation is the most common type of surface irrigation. determine the advance and recession time in the field is required the accurate measurement and this can be costly and time consuming. winsrfr model is used for simulation furrow irrigation by zero inertia and kinematic wave engines. using this model, advance time, reaction time, infiltration depth, runoff depth and application eff...

among different discretization approaches, finite difference method (fdm) is widely used for acoustic and elastic full-wave form modeling. an inevitable deficit of the technique, however, is its sever requirement to computational resources. a promising solution is parallelization, where the problem is broken into several segments, and the calculations are distributed over different processors. ...

Articles you may be interested in Microwave absorptions of ultrathin conductive films and designs of frequency-independent ultrathin absorbers Influence of lattice parameters on the resonance frequencies of a cut-wire-pair medium Experimental study of surface-wave-assisted microwave transmission through a single subwavelength slit

BACKGROUND F waves are late electrophysiological responses to antidromic activation of motor neurons and are used to evaluate the conduction along the whole length of peripheral nerves. We aimed to determine the diagnostic efficacies of minimum median nerve F-wave latency (FWL) and median-to-ulnar nerve F-wave latency difference (FWLD) on carpal tunnel syndrome (CTS). MATERIALS AND METHODS Th...

We have previously proposed a method of cutting bones using high intensity focused ultrasound. The goal of the method is to cut bones in a body without incising skin, but the condition under which bones are cut properly is so sensitive that 1 mm of displacement makes cutting bones fail resulting in necrosis around the focal point. In this paper, we have developed a focused ultrasound propagatio...

The one– and two– particle densities of up to four interacting electrons with spin, confined within a quasi one–dimensional “quantum dot” are calculated by numerical diagonalization. The transition from a dense homogeneous charge distribution to a dilute localized Wigner–type electron arrangement is investigated. The influence of the long range part of the Coulomb interaction is studied. When t...

The time evolution of plane waves in the presence of a 1-dimensional square quantum barrier is considered. Comparison is made between the cases of an infinite and a cut-off (shutter) initial plane wave. The difference is relevant when the results are applied to the analysis of the tunnelling regime. This work is focused on the analytical calculation of the time-evolved solution and highlights t...

We analyze the two-dimensional angular momentum-energy distribution of electrons emitted from argon by short laser pulses. We identify characteristic features of both multiphoton and tunneling ionization in the partial-wave distribution for Keldysh parameters close to unity. We observe a remarkable degree of quantum-classical correspondence in the photoinization process which becomes even more ...

For the Schrödinger-Poisson system, we propose an ALmost EXact(ALEX) boundary condition to treat accurately the numerical boundaries. Being local in both space and time, the ALEX boundary conditions are demonstrated to be effective in suppressing spurious numerical reflections. Together with the Crank-Nicolson scheme, we simulate a resonant tunneling diode. The algorithm produces numerical resu...

BACKGROUND We investigated whether multichannel ECG-recordings are useful to risk-stratify patients with congenital long-QT syndrome (LQTS) for risk of sudden cardiac death under optimized medical treatment. METHODS In 34 LQTS-patients (11 male; age 31±13 years, QTc 478±51ms; LQT1 n = 8, LQT2 n = 15) we performed a standard 12-channel ECG and a 120-channel body surface potential mapping. The ...