Abstract: The present disclosure provides systems, methods, and computer-readable storage devices for supporting an online marketplace that facilitates the exchange of digital assets from student athletes for donations from other users. An online marketplace platform may be configured to maintain accounts for student athletes users and to enable donations to the student athlete users from other users. For example, the online marketplace platform may receive donation information from a first user that indicates a payment amount and a second user designated as a recipient. The online marketplace platform may retrieve the payment amount from a payment source corresponding to the first user and increment an account of the second user based on the payment amount. Based on successful retrieval, the online marketplace platform may send a digital asset, such as a non-fungible token (NFT), associated with the second user to the first user.

Abstract: An air circulation unit, such as a portable evaporative cooler, has one or more graphic image displays. The display may comprise advertising signage, such as the name or logo for marketing the goods or services of a sponsor thereof. The display is affixed to hardware that is adjacent to the intake, the exhaust, or both surfaces. The display may comprise a printed screen having an image formed on a substrate that is permeable to air flow. The display may be mounted to a wire frame or other hardware that is secured adjacent to the intake or exhaust. The surface area of the display may be equal to, greater than, or less than the surface areas of the intake or exhaust, and may be spaced apart therefrom along an axis extending in a direction of the airflow at a suitable distance depending on the application.

Abstract: A lightweight structural member made of prestressed plastic foam is provided, the prestress provided by a plurality of tendons disposed within the foam to which tensile forces are applied during mold casting of the structural member, the tendons being retained in tension by bonding between the tendons and the foam, or by way of anchors which are spaced along the tendons to retain the tendons in immobile condition, one or more skin layers also being optionally provided. A method for producing a lightweight structural member of prestressed plastic foam is also provided.