Abstract: Systems and methods include registering use of a virtual certification number (VCN) at a secure entity by receiving, at an external gateway, a registration request comprising an external request code and a primary account number (PAN), wherein the external request code is unique to the secure entity, determining that the external request code is an unregistered external request code, receiving a tokenized PAN based on the PAN, receiving an account identifier by applying the tokenized PAN to a certification mechanism tool application programing interface (API), generating a certification mechanism reference identifier by encrypting a certification mechanism associated with the account identifier and the tokenized PAN, updating a database to associate the certification mechanism reference identifier with the external request code, and transmitting, via the external gateway, a registration authentication to an external entity, the registration authentication comprising the external request code.

Abstract: Systems and methods include providing virtual certification number (VCN) authorizations to an external entity by receiving a plurality of secure entity global authorizations comprising global VCN authorizations and global primary account number (PAN) authorizations, identifying the global VCN authorizations, identifying a subset of the global VCN authorizations, each of the subset of the global VCN authorizations corresponding to an external entity authorization, comparing the subset of global VCN authorizations to previously provided VCN authorizations, to identify an unsent VCN authorization, storing a transmittable unsent VCN authorization based on the unsent VCN authorization, providing an unsent authorization indication to the external entity, receiving, from the external entity, a request for the unsent VCN authorization based on providing the unsent authorization indication to the external entity, and providing the transmittable unsent VCN authorization to the external entity, based on storing the tran

Abstract: Systems and methods for authorizing a source for virtual certification number (VCN) use include receiving a VCN use request from an external entity, the VCN use request including the VCN and transaction data associated with the VCN use request, determining that a VCN binding for the VCN is a strict binding, mapping the transaction data to a transaction source having a transaction source identifier based on the VCN binding being the strict binding, determining a VCN source identifier for the source associated with the VCN, based on a registration authentication of the VCN with the source, comparing the VCN source identifier to the transaction source identifier, determining that the VCN source identifier corresponds to the transaction source identifier based on comparing the VCN source identifier to the transaction source identifier, outputting an approved authorization indicating that the VCN is associated with the source and the source is the transaction source.

Abstract: Systems and methods include registering use of a virtual certification number (VCN) at a secure entity by receiving, at an external gateway, a registration request comprising an external request code and a primary account number (PAN), wherein the external request code is unique to the secure entity, determining that the external request code is an unregistered external request code, receiving a tokenized PAN based on the PAN, receiving an account identifier by applying the tokenized PAN to a certification mechanism tool application programing interface (API), generating a certification mechanism reference identifier by encrypting a certification mechanism associated with the account identifier and the tokenized PAN, updating a database to associate the certification mechanism reference identifier with the external request code, and transmitting, via the external gateway, a registration authentication to an external entity, the registration authentication comprising the external request code.

Abstract: Systems and methods include providing virtual certification number (VCN) authorizations to an external entity by receiving a plurality of secure entity global authorizations comprising global VCN authorizations and global primary account number (PAN) authorizations, identifying the global VCN authorizations, identifying a subset of the global VCN authorizations, each of the subset of the global VCN authorizations corresponding to an external entity authorization, comparing the subset of global VCN authorizations to previously provided VCN authorizations, to identify an unsent VCN authorization, storing a transmittable unsent VCN authorization based on the unsent VCN authorization, providing an unsent authorization indication to the external entity, receiving, from the external entity, a request for the unsent VCN authorization based on providing the unsent authorization indication to the external entity, and providing the transmittable unsent VCN authorization to the external entity, based on storing the tran

Abstract: Systems and methods for triggering a virtual certification number (VCN) generation for use at a source include receiving a VCN generation request from an external entity, the VCN generation request comprising an external request code, external risk signals, and one or more source data for the source, verifying a registration authentication of an account associated with the external request code by comparing the external request code to a database entry, identifying a certification mechanism reference identifier associated with the external request code based on verifying the registration authentication, generating a risk authentication based on a risk analysis conducted using the external risk signals and the external request code, identifying a source identifier based on the one or more source data, and generating the VCN based on the certification mechanism reference identifier and the source identifier.

Abstract: There is described an artificial heart comprising a pump, the pump comprising a housing (10) defining a substantially spherical cavity and comprising four vascular connectors (15in, 15out, 15?in, 15?out), namely two inlet connectors (15in, 15?in) and two outlet connectors (15out, 15?out) to connect the pump to the pulmonary and systemic circulation. A rotatable disc (11) is mounted within the housing (10) and secured to rotate about a fixed axis (12). Two oscillating palettes (16a, 16b) are mounted to rotate about a mobile axis (17) movable within a plane perpendicular to the fixed axis (12), wherein said palettes (16a, 16b) are connected together and are arranged on both sides of the rotatable disc (11), in a diametrically opposed fashion, to create two pumping units comprising each two variable sized chambers (20a, 20b, 20c, 20d) in fluid communication with one corresponding inlet and outlet connector respectively.

Abstract: Systems, methods, and non-transitory computer-readable media can identify a set of media content items associated with a first user of a social networking system. It can be determined that a second user of the social networking system is attempting to access at least a portion of the set of media content items associated with the first user. A first subset of media content items can be dynamically selected out of the set of media content items. In some cases, each media content item in the first subset can satisfy specified selection criteria. The second user can be provided with access to a representation of the first subset of media content items. In some instances, the representation of the first subset can be provided in a media access interface associated with the first user.

Abstract: The present disclosure is directed toward systems and methods for generating application recommendations to provide to a user of a mobile device. For instance, the systems and methods use social networking information to identify applications that may be of interest to the user, and present application recommendations to the user at various contact points on the mobile device. The present disclosure is also directed toward systems and methods for managing the download and installation of selected applications on a mobile device such that a presentation focus on an application does not change during a download and installation process.

Abstract: Systems, methods, and non-transitory computer-readable media can identify a set of media content items associated with a first user of a social networking system. It can be determined that a second user of the social networking system is attempting to access at least a portion of the set of media content items associated with the first user. A first subset of media content items can be dynamically selected out of the set of media content items. In some cases, each media content item in the first subset can satisfy specified selection criteria. The second user can be provided with access to a representation of the first subset of media content items. In some instances, the representation of the first subset can be provided in a media access interface associated with the first user.

Abstract: Systems, methods, and non-transitory computer-readable media can identify a set of media content items associated with a first user of a social networking system. It can be determined that a second user of the social networking system is attempting to access at least a portion of the set of media content items associated with the first user. A first subset of media content items can be dynamically selected out of the set of media content items. In some cases, each media content item in the first subset can satisfy specified selection criteria. The second user can be provided with access to a representation of the first subset of media content items. In some instances, the representation of the first subset can be provided in a media access interface associated with the first user.

Abstract: Systems, methods, and non-transitory computer-readable media can identify a set of media content items associated with a first user of a social networking system. It can be determined that a second user of the social networking system is attempting to access at least a portion of the set of media content items associated with the first user. A first subset of media content items can be dynamically selected out of the set of media content items. In some cases, each media content item in the first subset can satisfy specified selection criteria. The second user can be provided with access to a representation of the first subset of media content items. In some instances, the representation of the first subset can be provided in a media access interface associated with the first user.

Abstract: A wheelchair seat is provided with a power adjustment assembly that allows the user to control the depth and angle of the wheelchair seat relative to the wheelchair base. The wheelchair includes a seat depth adjustment mechanism and a seat angle adjustment mechanism that provide adjustment of the forward and rearward horizontal position of the seat, and the vertical position of both the rear portion and the front portion of the seat. The wheelchair may additionally include a tilt assembly interposed between the seat and the wheelchair base to provide tilt for the entire adjustable seat assembly relative to the base. The tilt assembly is actuated by fixed and movable telescopic rails, and is connected to the seat by a pivot rod and a pivot linkage.