There is a simple type of electric network termed a series-parallel connection which occurs frequently in both theoretical and applied electrical engineering. One reason for the importance of series-parallel connection stems from the fact that the joint resistance is easily evaluated by the following two rules due to Ohm: 0 s. Resistance is additive for resistors in series. 0 P. Reciprocal resi...

Three-phase voltage source inverters (VSIs) with output $ LC$ filter are preferred topologies to provide and frequency support for islanded ac microgrids. This article proposes a finite-set quasi-sliding model predictive control (FS-QSM...

CM/AVS is a visualization environment for the massively parallel CM-5 from Thinking Machines. It provides a backend to the standard commercially available AVS visualization product. At the Advanced Computing Laboratory at Los Alamos National Laboratory, we have been experimenting and utilizing this software within our visualization environment. This paper describes our experiences with CM/AVS. ...

Using workstation clusters (WSCs) is a practical and cost-e ective means of parallel computing. Fast workstations, using the latest RISC technology, can be assigned as computation nodes, however, communication between nodes is rather slow when using Ethernet. Recently, fast communication adaptors[2] have been developed, and the speed problem is being solved. We have developed a WSC called the R...

SiC devices are potential future power because of their higher switching speed and lower ON resistance than those Si devices. Research development efforts to apply them in medium- large-capacity conversion circuits underway. However, TO packages, which general-purpose difficult high-current applications owing low current ratings. Therefore, increasing the capacity by connecting parallel is bein...

We describe three data-parallel implementations of the simplex method for dense linear programming problems. The rst implementation uses a full tableau and the most-negative reduced cost pivot rule, the second uses a tableau and the steepest-edge pivot rule, and the third is a revised method with explicit inverse. All are implemented on a Connection Machine CM{2 massively parallel computer syst...

Iterated integration of a connection gives the holonomy or parallel transport of the connection. Iterated integration of a superconnection gives something else which we call a “superconnection parallel transport.” We ask under what conditions are the holonomies of a connection on a graded vector bundle chain maps and under what conditions the superconnection parallel transports give homotopies ...

This paper investigates the relationship between two fundamental types of objects associated with a connection on a manifold: the existence of parallel semi-Riemannian metrics and the associated holonomy group. Typically in Riemannian geometry, a metric is specified which determines a Levi-Civita connection. Here we consider the connection as more fundamental and allow for the possibility of se...