Abstract Ferroelectric nanotubes offer intriguing opportunities for stabilizing exotic polarization domains and achieving new or enhanced functionalities by tailoring the complex interplay among geometry, surface effects, crystal symmetry, more. Here, phase‐field simulations to predict room‐temperature equilibrium domain structure in (001) pc PbZr 0.52 Ti 0.48 O 3 (PZT) are used (pseudocubic (p...

In the last couple of years it has been realized that Gaussian elimination for sparse matrices arising from certain elliptic PDEs can be done in O(n log(1/ )) flops, where n is the number of unknowns and is a user-specified tolerance [Chandrasekaran and Gu]. The resulting solver will also be backward stable with an error of O( ). The techniques used to achieve this speedup has some commonality ...

Frequency-domain stability criteria are developed for converter-based power systems with any number of converters. The converters may be grid following or forming, and the can an ac hybrid ac-dc network. network all modeled in a common (stationary) reference frame based on small-signal sequence immittances. Coupling over frequency coupling considered most general form. For each type systems, fr...

Abstract. Extracting domain-specific patterns and domain-neutral patterns is a challenge for both expert and novice software engineers. Currently, no mature guidelines or methodologies exist for extracting patterns. Software stability model proposed in [3] provides a base for extracting the core knowledge of the domain and identifying atomic notions that can be thought of as patterns by extract...