摘要:
A method for performing a checkpointing operation in a client/server computer system for safeguarding data in case of a failure. The records of a database are stored in a mass storage device, such as a hard disk drive array. A separate disk drive is dedicated for use only in conjunction with checkpointing. Periodically, when a checkpoint process is initiated, the server writes a number of its modified records to checkpoint files which are stored by the dedicated checkpoint disk drive. The write operation is performed through one or more sequential I/O operations. Thus, the modified records are stored in consecutive sectors of the hard disk drive. If the server becomes disabled, the data can be recovered by reading the contents of the most recent checkpoint files and loading the contents sequentially back to the server's main memory.
摘要:
In a client/server computer system, a method for writing modified data in a cache memory back to a database residing in a hard disk drive. Rather than writing back all of the modified data as part of a checkpointing operation, the present invention designates an amount of the cache memory that is to be cleared for a pre-determined time interval. The amount of cache memory to be cleared is based on an estimate of how much new data is anticipated to be cached. Thereby, just enough memory is cleared and made available so as to accommodate the storage of new data. For the modified data which are to be written back to the database, a lazy writeback operation is utilized.
摘要:
A foldable stadium seat (10) is disclosed which is manufactured from a pair of first and second generally planar seat members (11) and (12), which are both products of the same mold. This is made possible by a specific configuration of hinges wherein a first hinge half of a first hinge is attached at one end of the rear edge of the seat member and a second hinge half of a second hinge is positioned at a second end of the rear edge of the seat member. Each of the hinge halves are positioned along the rear edge such that when the rear edge of a second seat member is placed juxtaposition the rear edge of the first seat member, the hinge halves on the two seat members will interfit and can be engaged by a suitable hinge pin (14). Radial stops are formed along the rear edge of both seat members (11) and (12) to provide a radial stop for the foldable single mold stadium seat (10) when it is in the open position, having a first and second seat members (11) and (12) generally perpendicular to one another.
摘要:
A consumable component for a thermal processing torch is provided. The consumable component includes a consumable component body and a signal device located on or within the consumable component body for transmitting a signal associated with the consumable component. The signal can be independent of a detectable physical characteristic of the consumable component.
摘要:
An anti-splash device for use in a cup or other container can help prevent or minimize sloshing, splashing and other undesirable movement of fluids. In some embodiments, the device includes a main body portion having a plurality of openings. The device can also include one or more features that are configured to engage an interior wall of the cup or other container. In other embodiments, the anti-splash device can attach to the brim of a cup or to a lid. In other embodiments, an anti-splash device, a cup lid or any other components related to a beverage or food container comprises one or more finger guides that provide targeted points of contact when manipulating such a device.
摘要:
A string anchor useful for anchoring a guitar string to a guitar bridge. The string anchor body has a body slot extending along the body side to the through hole. The body is adapted to receive the string enlarged end into the through hole at an anchor body top and through the through hole downward to outside of the anchor body bottom such that as the string adjusted such that its enlarged end is alongside the body and is pulled upward through the through hole and the slot, the string enlarged end is pulled against the anchor body and the bridge plate.
摘要:
A system and process for network-based, interactive, multi-media learning is presented. The learning system and process employs high quality, low latency audio/video links over a multicast network (such as Internet2), as well as an interactive slideshow that allows annotations to be added by both the presenter and lecture participants, a question management feature that allows participants to submit questions and receive answers during the lecture or afterwards, and a complete archiving of the data streams and metadata associated with the foregoing features.
摘要:
An optimized stub-out, sizing system, and method of manufacture for an optimized stub-out having a length adapted to the type of fixture or appurtenance being installed and having a flat-end adapted to piercing.
摘要:
A crystal comprising a biotin carboxylase domain of acetyl-CoA carboxylase is described, along with a computer-based method for identifying compounds that modulates activity of acetyl-CoA carboxylase, a computer-based method for rationally designing a compound that modulates activity of acetyl-CoA carboxylase, along with compounds produced by such methods, as well as compositions and methods of use thereof.
摘要:
A string or cable anchor useful for anchoring the string to a structure, and advantageously a guitar and other stringed musical instruments, typically has a cylindrical body and alternatively a frustum body with an axial bore therethrough ending in intersection with a second bore at an acute angle. The second bore is directed downward from the axial bore and opens at a body side, the body having a body slot extending partially along the body side through the body and through the acute angle from the body side to a body axis and the axial bore. The body slot larger than the cable diameter and smaller than the string enlarged end and the axial bore larger than the string enlarged end is adapted to receive the string enlarged end into the axial bore at an anchor body top and through the axial bore to the intersection with the second bore and then downward through the second bore to outside of the cylindrical body with the string in the body slot such that as the cable is pulled upward through the axial bore, the cable enlarged end larger than the body slot is pulled against the body slot and the anchor body and is thus anchored to the cable anchor.