Abstract: Disclosed is a method and apparatus of fabricating three-dimensional heat transfer enhancing features on a surface of a substrate, the three-dimensional heat transfer enhancing features having a predetermined desired shape on a surface of a substrate. A mask is supplied, the mask having a pattern formed therein. The pattern is selected based on the predetermined desired shape of the three-dimensional heat transfer enhancing features to be fabricated. A jet of impinging coating particles is sprayed through the mask towards the substrate. A portion of the jet is selectively blocked with the pattern in the mask to fabricate the three-dimensional heat transfer enhancing features on the substrate.

Abstract: Some examples provide systems, methods, apparatus, and computer program products for evaluating participants in a market platform based on the performance of the participants in transactions using the market platform. These evaluations may result in ratings being assigned to the participants, where the rating provides an assessment of the desirability of contracting with the particular party. For example, a rating may provide an estimate of the likelihood that a buyer will comply with the commitment level of their committed pricing agreement, or a rating may provide an estimate of how likely a supplier is to deliver ordered goods in a timely manner and at an agreed-upon price. Implementations may further allow for configuration of a rating engine to provide a unique rating designed for a particular contracting party.