<p>The Multilevel inverter (MLI) is identified as a viable power electronic unit for distributed energy conversion applications. In this paper discusses the performance of single phase seven level Z (impedance) source cascaded H-bridge topology suited solar photovoltaic systems. A modified sinusoidal pulse width modulation technique used to control switches inverter. The simulation result...

The goal of the research was to define experts opinion about adequate criteria for water polo players' actual quality evaluation and to determine experts opinion about weight coefficients (ponders) of the here defined criteria across the playing positions in the game of water polo. Based upon the expertise performed by ten water polo professionals, the relative importance coefficients with rega...

AIM To obtain the views of specialist registrars on specialty care in the community. METHOD Specialist registrars from five Deaneries in England completed an online questionnaire about their views on employment prospects, the role of specialty care in the community, and the need for additional training in this area. RESULTS One hundred and twenty seven replies were received over a four week...

Challenge and threat states predict future performance; however, no research has examined their immediate effect on motor task performance. The present study examined the effect of challenge and threat states on golf putting performance and several possible mechanisms. One hundred twenty-seven participants were assigned to a challenge or threat group and performed six putts during which emotion...

It is hypothetized that the algebra of the configuration of twenty-seven lines lying on a general cubic surface underlines the dimensional hierarchy of heterotic string spacetimes.

My search for answers began in Birmingham in 1932 with the scientific humanity of Leonard Parsons; it found its main direction in James Spence's Newcastle where, for fifteen of my twenty-seven years there I crossed almost daily the frontier between home and hospital to make some 3,000 visits to every kind of family in every circumstance of life. Then clinical and academic colleagues brought the...