Abstract: A network system provides delivery of items using unmanned aerial vehicles (UAV) or drones. The network system uses an infrastructure of nodes that include landing pads to dock drones, as well as interfaces to provide and receive items from docked drones. Nodes may be stationary (e.g., fixed at a building rooftop or public transit station) or mobile (e.g., mounted to a vehicle). The network system may determine a route for delivery of an item, where a drone transports the item for at least a portion of the route. For example, the route may include multiple waypoints associated with nodes between which drones travel. For other portions of the route, the network system may request a provider to transport the item using a ground-based vehicle.

Abstract: A turbomachine having an axial stop member arranged to restrain axial movement of a bearing assembly of the turbomachine, the axial stop member having a bore defined by a radially inner surface of the axial stop member which forms a close radial fit with a shaft of the turbomachine, or a member mounted on the shaft to rotate with the shaft, an anti-rotation formation engageable with a complimentary formation provided on an outer race of the bearing assembly so as to rotationally fix the outer race relative to the axial stop member and wherein the axial stop member further comprises a lubricating fluid directing member and a lubricating fluid outlet, the lubricating fluid directing member being arranged to receive lubricating fluid that is flung radially outward from said axis, due to the rotation of the shaft, and to direct the lubricating fluid to the lubricating fluid outlet.

Abstract: A turbomachine having an axial stop member arranged to restrain axial movement of a bearing assembly of the turbomachine, the axial stop member having a bore defined by a radially inner surface of the axial stop member which forms a close radial fit with a shaft of the turbomachine, or a member mounted on the shaft to rotate with the shaft, an anti-rotation formation engageable with a complimentary formation provided on an outer race of the bearing assembly so as to rotationally fix the outer race relative to the axial stop member and wherein the axial stop member further comprises a lubricating fluid directing member and a lubricating fluid outlet, the lubricating fluid directing member being arranged to receive lubricating fluid that is flung radially outward from said axis, due to the rotation of the shaft, and to direct the lubricating fluid to the lubricating fluid outlet.

Abstract: A method, apparatus, system, and computer program product for communicating using Session Initiation Protocol (SIP) is provided. The method, apparatus, system and computer program product provide mechanisms by which simplified messages may be utilized by client applications such that the client applications need not maintain information pertaining to the routing of messages. The system includes a network interface and a SIP client manager that receives SIP messages through the network interface. The SIP client manager contains a SIP management module and an X-SIP client module. The SIP management module contains a SIP message modifier for modifying incoming messages and outgoing messages in accordance with context information or state information for a session associated with a SIP message, and the SIP management module also contains input/output controllers for receiving, sending, or forwarding SIP messages.

Abstract: A method, apparatus, system, and computer program product for communicating using Session Initiation Protocol (SIP) is provided. The method, apparatus, system and computer program product provide mechanisms by which simplified messages may be utilized by client applications such that the client applications need not maintain information pertaining to the routing of messages. The system includes a network interface and a SIP client manager that receives SIP messages through the network interface. The SIP client manager contains a SIP management module and an X-SIP client module. The SIP management module contains a SIP message modifier for modifying incoming messages and outgoing messages in accordance with context information or state information for a session associated with a SIP message, and the SIP management module also contains input/output controllers for receiving, sending, or forwarding SIP messages.

Abstract: A method, apparatus, system, and computer program product for communicating using Session Initiation Protocol (SIP) is provided. The method, apparatus, system and computer program product provide mechanisms by which client applications need not maintain information pertaining to the routing of messages. The SIP client manager receives SIP messages through a network interface. The SIP client manager contains a SIP management module and an X-SIP client module. The SIP management module contains a SIP message modifier for modifying incoming messages and outgoing messages in accordance with context information or state information for a session associated with a SIP message, and the SIP management module also contains input/output controllers for receiving, sending, or forwarding SIP messages. The X-SIP client module contains an input/output controller for receiving and sending SIP messages and also contains a SIP application programming interface (API) for handling SIP messages for a SIP-enabled application.