Abstract: Embodiments of the present disclosure include a walker equipped with one or more sensors, an onboard controller, powered wheels and associated motor controllers. The walker can sense its distance from the user and activate the powered wheels when commanded by the controller. The controller can execute programming including an automatic feedback control algorithm that regulates the distance between the walker frame and the user. In this manner, the walker automatically follows the user, keeping the user from having to expend energy to pull the walker along. The walker can then be utilized by the user solely for balance and support.

Abstract: Provided herein are components (e.g., cells and soluble proteins), systems, and methods for assessing the biological activity of soluble proteins comprising an Fc domain and a CD28-binding domain (e.g., CD80 extracellular domain Fc fusion proteins).

Abstract: A method and system for reconciling an account among three data sources, including data provided by or on behalf of an entity, data provided by an asset manager, and data provided by a custodian of an account held by the entity. The system identifies data provided by the entity and receives data from the asset manager and data from the custodian on a daily basis. The system normalizes and aggregates the data. The system matches transactions and positions executed on behalf of the entity among the three data sets. The system compares data associated with matched transactions and positions among the three data sets. If the system identifies any differences in the data associated with a matched transaction and positions among the three data sets, the system reconciles the data. The system may also generate a reconciliation report.

Abstract: A thin, flexible polymer used as an optical data storage disc protector capable of adhering by its static cling material properties to protect a compact disc during handling and storage while consuming minimal space. The outside Diameter (12) of the Protector (10) is larger than the outside diameter (17) of the compact disc (20), which allows for easy handling, application, and removal of the protector (10) repeatedly onto and off of a compact disc (20). Graphics 22 may be printed onto the outside surface (15) of the protector (10) for identifying the disc (20). Harmful sunlight to the compact disc (20) may be decreased or eliminated by an impregnated Ultraviolet protection layer (19).