the morphological river evolution at long-time (centuries and even millennia) and large spatial scale (watersheds of several square kilometres) can be described by means of simplified 1d models, able to simulate the variation of bed elevation and grain size composition at non-detailed scales, involving a reduced computational effort. the erosion and deposition phenomena acting along rivers can ...

Background: High-energy linear accelerator (linac) is a valuable tool and the most commonly device for external beam radiation treatments in cancer patients. In the linac head, high-energy photons with energies above the threshold of interaction produce photoneutrons. These photoneutrons deliver the extra dose to the patients in the planning treatment and increase the risk of secondary cancer.O...

As smart structures are becoming increasingly ubiquitous in our daily life, the need for efficient modeling electromechanical coupling devices is also rapidly advancing. Smart often made of piezoelectric materials such as lead zirconate titanate (PZT), which exhibits strong nonlinear behavior known hysteresis effect under a large applied electric field. There have been numerous techniques that ...

This paper presents a simplified mathematical model of pumped hydrofoil (PH)—a surfboard elevated above water surface and connected to tandem hydrofoils by strut. The PH is operated rider who stands on the produces swinging up-and-down motions resulting in forward propulsion device. In present paper, description vertical motion reduced linear oscillator excited an oscillating mass coupled with ...