Abstract: Features for a tail-sitter aircraft having efficiently designed propulsive elements are disclosed. The aircraft may have a tail with landing mounts to support the aircraft in a vertical position for takeoff and landing. The aircraft may have a hybrid propulsion system including an electric power source, such as a generator and an electric motor, and a prime power subsystem, such as an internal combustion engine. The electric and prime power subsystems may be used controllably in varying amounts depending on the phase of flight, such as takeoff, horizontal flight, landing, or maneuvers. The aircraft may have blades with piezo elements to provide shape-changing capability to the blade. The shape of the blade, such as the pitch and/or twist, may be controllably changed for optimal efficiency with the blade depending on phase of flight. The blade shape may be changed from a rotor-like shape during takeoff and landing, to a propeller-like shape during horizontal flight.

Abstract: Features for a tail-sitter aircraft having efficiently designed propulsive elements are disclosed. The aircraft may have a tail with landing mounts to support the aircraft in a vertical position for takeoff and landing. The aircraft may have a hybrid propulsion system including an electric power source, such as a generator and an electric motor, and a prime power subsystem, such as an internal combustion engine. The electric and prime power subsystems may be used controllably in varying amounts depending on the phase of flight, such as takeoff, horizontal flight, landing, or maneuvers. The aircraft may have blades with piezo elements to provide shape-changing capability to the blade. The shape of the blade, such as the pitch and/or twist, may be controllably changed for optimal efficiency with the blade depending on phase of flight. The blade shape may be changed from a rotor-like shape during takeoff and landing, to a propeller-like shape during horizontal flight.

Abstract: Provided are techniques for data stream switching. While accepting data change messages from a historical data stream, in response to determining that the end of the historical data stream is approaching, consumption from a real time data stream is resumed. In accepting data change messages from one of a historical data stream and a real time data stream, a data change message identifier (DCMID) for a data change message is obtained. Then, it is determined whether the data change message is from the real time data stream. In response to determining that the data change message is from the real time data stream, the DCMID is processed against a historical data structure to determine whether the related data change message has been seen in the historical data stream. In response to determining that the data change message is from the historical data stream, the DCMID is processed against a real time data structure to determine whether the related data change message has been seen in the real time data stream.

Abstract: Provided are techniques for data stream switching. While accepting data change messages from a historical data stream, in response to determining that the end of the historical data stream is approaching, consumption from a real time data stream is resumed. In accepting data change messages from one of a historical data stream and a real time data stream, a data change message identifier (DCMID) for a data change message is obtained. Then, it is determined whether the data change message is from the real time data stream. In response to determining that the data change message is from the real time data stream, the DCMID is processed against a historical data structure to determine whether the related data change message has been seen in the historical data stream. In response to determining that the data change message is from the historical data stream, the DCMID is processed against a real time data structure to determine whether the related data change message has been seen in the real time data stream.

Abstract: A database definition, logical database view, extended field definition and control statement information are accessed to build an in-memory representation of selective information contained therein. Utilizing this in-memory representation, a class in one form is automatically generated and customized wherein this class is used to access a hierarchical database responsive to a hierarchical database access request from an application.

Abstract: A system for identifying and utilizing a secondary index to access a database using a management system without an internal catalogue of online metadata. The system receives an application request to access a database from the application program, and parses the application request to determine at least one column name and at least one table name. The system utilizes an online catalogue containing metadata to translate the column name to a field name and the table name to a segment name, wherein the segment name has an associated secondary index. The system utilizes the online catalogue to determine an associated secondary index name, and builds a database request that includes the segment name, the field name, and the associated secondary index name. The system then sends the database request to the database management system, so that the associated secondary index can be used by the database management system in response to the database request.

Abstract: A database definition, logical database view, extended field definition and control statement information are accessed to build an in-memory representation of selective information contained therein. Utilizing this in-memory representation, a hierarchical database schema report is automatically generated wherein this hierarchical database schema report may be used to write application code to access the hierarchical database without further need to utilize the database definition, the extended field definition, the logical database view or any combination thereof.

Abstract: A system for identifying and utilizing a secondary index to access a database using a management system without an internal catalogue of online metadata. The system receives an application request to access a database from the application program, and parses the application request to determine at least one column name and at least one table name. The system utilizes an online catalogue containing metadata to translate the column name to a field name and the table name to a segment name, wherein the segment name has an associated secondary index. The system utilizes the online catalogue to determine an associated secondary index name, and builds a database request that includes the segment name, the field name, and the associated secondary index name. The system then sends the database request to the database management system, so that the associated secondary index can be used by the database management system in response to the database request.

Abstract: A database definition, logical database view, extended field definition and control statement information are accessed to build an in-memory representation of selective information contained therein. Utilizing this in-memory representation, a hierarchical database schema report is automatically generated wherein this hierarchical database schema report may be used to write application code to access the hierarchical database without further need to utilize the database definition, the extended field definition, the logical database view or any combination thereof.

Abstract: A database definition, logical database view, extended field definition and control statement information are accessed to build an in-memory representation of selective information contained therein. Utilizing this in-memory representation, a class in one form is automatically generated and customized wherein this class is used to access a hierarchical database responsive to a hierarchical database access request from an application.

Abstract: A converged service frame format is defined to support any-to-any connections between Ethernet and Token Ring LANs. The converged service frame format is a superset of standard Ethernet frame formats defined in IEEE 802.3 specifications. Where the frame source is an Ethernet LAN, an 802.1Q tag is added. Where the frame source is a Token Ring LAN, other operations are performed, including mapping of Token Ring priority bits into an appropriate field in the converged service frame. The operations required to map either an Ethernet or a Token Ring frame into the converged service frame are performed at an edge device at a point of ingress into an intervening network. The inverse operations required to restore the Ethernet or Token Ring frame are similarly performed in an edge device at a point of egress from the network.