Abstract: Techniques and devices are described for building 3D drawings within a 3D scene sourced from a game engine (or other video source) without the benefit of 3D data and other metadata from the game engine itself. Accordingly, in one aspect an apparatus may include at least one processor assembly that is configured to access a parameterization of a virtual 3D space and to receive user input directed to an object represented in the virtual 3D space. The at least pone processor assembly may also be configured to, based on the user input, change the parameterization of the virtual 3D space to represent the user input within the virtual 3D space from different viewing angles.

Abstract: The present invention is a method for creating a virtual exchange to trade sponsorships for content, the method comprising publishing to the exchange an offer to create content at a set price by a content creator, the exchange having an algorithm that calculates a cost per unit of the offer, the calculation of the cost per unit of the offer based on an audience of a predetermined size known to the content creator and a price established by the content creator for the content, wherein multiple content creators publish offers to the exchange, wherein the published offers are viewable by sponsors and wherein sponsors are able to compare the cost per unit of each offer prior to purchasing an offer.

Abstract: Disclosed is a heat exchanger, especially an exhaust gas heat exchanger, comprising a housing (101, 201, 301, 401, 501, 601, 702, 801, 901, 1101, 1401, 1501, 1901, 2001, 2101, 2201) which can be penetrated by at least one first medium (M1) and at least one second medium (M2), and at least one sealing element (213, 607, 707, 906, 1006, 1011, 1411, 1506, 2205). At least one flow means (217, 1507, 1507a, 1508, 1904, 2005, 2105, 2206, 2206a, 2206b), around which the second medium flows, is provided inside the housing, said flow means improving heat transfer from the first medium to the second medium.