Abstract:
An apparatus, system, and method includes a housing having at least one inlet plug suitable for connection to an alternating current (AC) power outlet and at least one outlet receptacle suitable receiving an AC plug connected to a load device. An AC measurement module is contained within the housing and is coupled to the inlet plug and the outlet receptacle to measure AC voltage and AC current usage of the load device connected to the outlet receptacle. A communication module is operative to transmit AC power values calculated based on the measured AC voltage and AC current in accordance with the IEEE 802.11 wireless networking standard (Wi-Fi) to a wireless network access point.
Abstract:
A process based on the microwave-induced pyrolysis of an actively seeded, high-purity preceramic polymer for the rapid fabrication of low-cost and net-shape, provides silicon carbide and other ceramic components with specifically tailored compositions and multifunctional properties. The microwave processing method enables the microwave-induced pyrolysis of a polymer precursor that has been seeded with low volume fractions (about 5%) of nanometer-sized metal and/or dielectric fillers. The proper choice of the size of the filler particles, the volume content of the filler and the material type of the filler enables the effective direct coupling of the microwave energy to pyrolyze the preceramic polymer.
Abstract:
A disk is segmented into a first data segment and a secondary data segment. The secondary data segment stores a logical mirror of the first data segment of another disk. Upon detecting a failure, the logical mirror of data stored in the first data segment of the failed disk is accessible from the secondary data segment of a non-failed disk. The first data segment can be rebuilt quickly on another disk from the logical mirror stored in the secondary data segment. During regenerating, accesses to the first data segment on the disk containing the logical mirror are handled by its own logical mirror, which is not involved in the regenerating process.
Abstract:
A large information space is divided into many smaller information extents. These extents are annotated with statistics about the information they contain. When a search for information includes a restriction based on value, the desired value ranges can be compared to the value ranges of each extent. If the desired value range lies outside the range of the extent, then the extent cannot hold the desired value and does not need to be included in the search.
Abstract:
A system from processing database queries allows for cost and locale based distribution for execution of database queries. The database queries are executed on execution engines that provide flexible configuration and overlapping functionality. The system reduces various costs, including elapsed time, required to perform database queries. The system provides processing of a database query using a database catalog comprising database table locality information, record locality information and execution engine information. A query optimizer receives the query and accesses the database catalog to create a query execution plan comprising locality-based database operations. A central database operation processor providing a first execution engine executes the query execution plan by performing at least a portion of the locality-based database operations and distributing at least a portion of the locality-based database operations as a subplan. A second database operation processor providing a second execution engine executes the subplan received from the central database operation processor. At least one of the database operations can be executed on either the first execution engine or the second execution engine. A storage unit stores at least a portion of database tables and records. A data communications network connects the central database processor to the second database processor.