GENRAY and CQL3D were used to estimate the Electron Bernstein Wave (EBW) current drive profiles normalised efficiency ? CD (6) for several STEP reactor concepts with varying temperature, density, geometry magnetic field. > 1.0 was readily found ? = 0.65 ? 0.9 while 0.5 ? 0.5. Okhawa is be most efficient mechanism due high trapped fraction in STEP. Optimal 2 nd harmonic absorption ? 0.8 highe...

Parallel connection of inverter modules is a solution to increase reliability, efficiency and redundancy of inverters in Micro-Grid system. Proper load sharing among parallel inverters is a key point. The circulating current among the inverters can greatly reduce the efficiency or even cause instability of the system. In this paper, a control strategy for improving the load sharing performance ...

In a previous paper (Johnsen et al., 2015) and presentation (Johnsen et al., 2016), we developed and demonstrated a generic modelling framework for the modelling of direct precipitation fouling from multi-component fluid mixtures that become super-saturated at the wall. The modelling concept involves the 1-dimensional transport of the fluid species through the turbulent boundary layer close to ...

This paper will discuss frequently encountered errors in the evaluation process relative to anti-virus software selection by examining some of the methods commonly used by corporate and governmental personnel working in the area of Management Information Systems (MIS). In addition to discussing inherent problems, we will suggest alternative methodologies for evaluation. We will examine commerci...

The current push for bandwidth caps, tiered usage pricing, and other measures in both wireless and wireline communications is usually justified by invoking the specter of “bandwidth hogs” consuming an unfair share of the transmission capacity and being subsidized by the bulk of the users. This paper presents a conventional economic model of flat rates as a form of bundling, in which consumption...