摘要:
Apparatus and methods for providing SRAM timing tracking cell circuits are disclosed. In an embodiment, an apparatus comprises an SRAM array comprising static random access memory cells arranged in rows and columns; a plurality of word lines each coupled to memory cells along one of the rows; a clock generation circuit for outputting clock signals; a word line generation circuit for generating a pulse on the plurality of word lines responsive to one of the clock signals and for ending the pulse responsive to one of the clock signals; and a tracking cell for receiving a clock signal and for outputting a word line pulse end signal to the clock generation circuit, following an SRAM tracking time; wherein the tracking cell further comprises SRAM tracking circuits positioned in the SRAM array and coupled in series to provide a signal indicating the SRAM tracking time. Methods for SRAM timing are disclosed.
摘要:
Methods and apparatus, including computer program products, implementing and using techniques for performing an index scan in a database system. A sequence of pages visited during an index scan are dynamically tracked. The tracking includes tracking the number of page accesses requiring a wait for input or output. It is determined whether prefetching of an object is desirable. The determination being made at least in part based on the number of page accesses requiring a wait for input or output. If prefetching is desirable, a prefetching method is selected among a set of available prefetching methods. An effectiveness of the selected prefetching method is continuously monitored by tracking the sequence of pages accessed and available access methods. A different prefetching method is selected from the set of available prefetching methods if the different prefetching method has a better effectiveness for a portion of the index that is being scanned.
摘要:
Network architectural roles of packet switching devices are automatically determined by retrieving and analyzing configuration information of the packet switching devices. The retrieved configuration information typically includes operational details of the packet switching operations performed by the packet switching device, with these retrieved operational details being analyzed in order to identify one or more network architectural roles being performed by a particular packet switching device. Examples of such identified network architectural role include, but are not limited to, a customer edge device, a provider edge device, and a user-facing provider edge device. Knowing the architectural role performed by a packet switching device is useful for operations, administration, maintenance and provisioning of networks of these packet switching devices.
摘要:
An extensibility framework that allows a user to write user-defined modules that include user-defined operators (UDO) and user-defined aggregators (UDA) in a non-temporal fashion without the need to worry about temporal attributes of events (or event types). The temporal domain is managed on behalf of the user, and allows the user to write operators and aggregates in the temporal data streaming domain as well as to port existing libraries of non-temporal UDOs/UDAs to the temporal data streaming domain. Temporal attributes and event types are managed for non-temporal UDOs/UDAs by the extensibility framework on behalf of the UDO/UDA writer. Windows can be employed to bridge the gap between the non-temporal domains and temporal domains. Support for complex event processing (CEP) is provided in UDOs/UDAs for base classes related to a CEP operator, CEP aggregate, CEP time sensitive operator, and CEP time sensitive aggregate.
摘要:
A ring back tone playing method and system, a home location register and a mobile switching center, the method comprises the calling side mobile switching center transmitting a route request message to the called side home location register when the calling side mobile switching center has received the call request transmitted from the calling terminal to the called terminal; the calling side mobile switching center receiving the ring back tone service identifier returned from the called side home location register which instructs that the called side home location register has got the called terminal's absence response message and the called terminal has customized a ring back tone service; the calling side mobile switching center instructing the playing device to play the ring back tone to the calling terminal according to the ring back tone service identifier.
摘要:
Example methods, apparatus, and articles of manufacture to generate a wizard application are disclosed. A disclosed example method includes storing a graphical user interface input by a user for the wizard application in a file, storing a definition of an action input by the user to be performed by the wizard application in the file, and transferring the file and an engine to a user's computer, the file to be used by the engine to execute the wizard application, and the engine to, in response to an input from a user of the engine, convert the graphical user interface to at least one of a command line interface, a webpage interface, or an interface that reads user input from a file.
摘要:
A method and apparatus for transmitting a control channel in a base station for a wireless communication system. The base station transmits information including a number of channel elements constituting control channels, to a terminal; establishes a set of control channels that the terminal can receive, within the number of channel elements using an identifier (ID) of the terminal; and transmits control information to the terminal through a selected control channel among the control channels. The terminal is restricted to monitor only a proper number of control channels established without the need to monitor all control channels, thereby reducing reception complexity and avoiding unnecessary battery consumption.
摘要:
In a process for forming a bulk hydroprocessing catalyst by sulfiding a catalyst precursor made in a co-precipitation reaction, up to 60% of the metal precursor feeds end up in the supernatant. The metals can be recovered via any of chemical precipitation, ion exchange, electro-coagulation, and combinations thereof to generate an effluent stream containing less than 50 mole % of metal ions in at least one of the metal residuals, and for at least one of the metal residuals recovered as a metal precursor feed for use in the co-precipitation reaction. In one embodiment, the resin functions as an anion exchange resin with an acidic supernatant to recover Group VIB metal residuals, and a cation exchange resin with a basic supernatant to recover Promoter metal residuals. An effluent stream from the process to waste treatment contains less than 50 ppm metals.
摘要:
A method includes performing a first programming operation on a plurality of memory cells in a same programming cycle; and performing a verification operation on the plurality of memory cells to find failed memory cells in the plurality of memory cells, wherein the failed memory cells are not successfully programmed in the first programming operation; and performing a second programming operation on the failed memory cells. Passed memory cells successfully programmed in the first programming operation are not programmed in the second programming operation.
摘要:
The present invention is adapted to connector field and provides an ultrathin USB female connector, including a metal top shell, an insulated main body with connection pins which are compatible with USB interface protocol, and a metal bottom shell. The connection pins are fixed on the insulated main body. The insulated main body is fastened in the metal top shell. The metal top shell is slidably connected to the metal bottom shell, and the total thickness of the metal top shell and the metal bottom shell is variant. The USB female connector provided by the present invention, when the metal top shell and the metal bottom shell are matched with each other completely, the thickness of the USB female connector is the smallest, and the thickness is smaller than that of the standard USB female connector, thus the USB female connector provided by the present invention can be applied to ultrathin devices. When the ultrathin USB female connector is ready to plug in the standard USB male connector, the metal bottom shell is pulled out, the thickness of the USB female connector increases and reaches the thickness of the standard USB female connector, so that it can plug in the standard USB male connector, thus realizing the object of connecting the ultrathin USB female connector of the present invention with outside electronic devices.