When in operation, pump-turbine runners have to withstand large pressure pulsations generated by the rotor-stator interaction. The analysis of the dynamic behavior of these structures is necessary to avoid damage. For this ...

This paper presents an analysis of lightning warnings based on Cloud to Ground flashes information provided by the Colombian lightning locating network (RECMA) during five years. Predictions made in this analysis have ...

Analytic models for a bidirectional coupled-inductor Cuk converter operating in sliding mode are described. Using a linear combination of the converter four state variable errors as a general switching surface, the expression ...

This paper describes the integration of mathematical models of the cardiac electrical activity, the cardiovascular system and the baroreceptor reflex control of the autonomic nervous system, with a model representing a ...

A novel approach to directly interface a capacitively coupled resistive sensor to a microcontroller is presented in this article. The existing measurement schemes for such sensors are complex. In addition, the coupling ...

This paper presents an analysis of a gate-driving technique for enhancing the switching performance of gallium nitride (GaN) power transistors. The technique consists of modifying the Pulse Width Modulated (PWM) signal ...

There has been a long history of coal mine accidents and these, usually, involve serious injuries, fatalities, and the destruction of facilities. In the seventies, an explosion killed 28 miners in a Spanish coal mine. This ...

In this work, we numerically consider a thermoelastic problem where the thermal law is modeled using the so-called Moore-Gibson-Thompson equation. This thermomechanical problem is written as a coupled system composed of a ...

The ground plane of a handset device plays an importants role in radiations process. As a consequence, thorugh a ground plane modification, it is possible to obtain a multiband performance while keeping small antenna dimensions.