Abstract: One or more systems and/or methods for providing conversion prospecting for dynamic content recommendation are provided. A model is trained, using positive events and negative events, to predict conversion-given-click probabilities of users and products. The model is utilized to generate a prediction of a conversion-given-click probability that a user will perform an action in relation to a product. The model is used to generate a bid for the user and the product based upon the conversion-given-click probability, a content provider bid for the product, and a target cost per action. The bid is used to determine whether the product is to compete in an auction hosted by a content serving platform that selects and transmits content items of products to devices for display to users.

Abstract: A personalized intervertebral disc replacement for a subject includes a first element adapted to contact a first vertebra in the spine of the subject, a second element adapted to contact a second vertebra adjacent to the first vertebra in the spine of the subject, and a set of links coupling the first and second elements, the links arranged as a passive parallel mechanism, each of the links having a predetermined stiffness and length, and at least some of the links being oriented obliquely to a direction perpendicular to either of the first and second elements.