July 2014

Optical observation of streamer propagation and breakdown in seed based insulating oil under impulse voltages

Increasing demand of electricity and high consumption of natural fuel resources has raised countless challenges for the electricity industry. For years, transformers were equipped with mineral oil for better and lasting performance but the recent uncertainty about the future of oil availability is motivating the researchers to find out the “Green Insulating Oils” for transformers. Thus, green insulating oils...

Author(s): Mohammed I. Qureshi, Abderrahmane Beroual and Essam A. Al-Ammar

July 2014

An efficient technique for morphing zero-genus 3D objects

In this paper, we present an algorithm to morph a zero-genus mesh model to a topologically equivalent one based on spherical parameterization, as it is the natural parameterization method for this kind of objects. Our algorithm starts by normalizing the two objects to the cube of unity, as a preprocessing step. Then, the two normalized models are parameterized onto a common spherical domain. We reposition the points of...

Author(s): A. Elef, M. H. Mousa and H. Nassar