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    • 62. 发明申请
    • PARALLEL ALGORITHM TO IMPLEMENT TEMPORAL AGGREGATE QUERIES
    • 并行算法实现时间聚集查询
    • US20100057706A1
    • 2010-03-04
    • US12203180
    • 2008-09-03
    • Xin Zhou
    • Xin Zhou
    • G06F17/30
    • G06F17/30551
    • A method executed by a plurality of processors in a database system to implement temporal aggregate queries. The database system has a temporal table. A plurality of consecutive temporal partitions are defined and allocated to the respective processors. A query is received to aggregate at least one attribute of the temporal table. In response to the query, a plurality of timestamps are identified in the temporal table, the respective timestamps are allocated to the respective temporal partitions, the value changes in the at least one attribute at the plural timestamps are computed within each partition using the respective processors to which each partition is allocated, and the value changes within each partition are aggregated using the respective processors to which each partition is allocated to produce an aggregate value for the query.
    • 由数据库系统中的多个处理器执行的方法来实现时间聚合查询。 数据库系统有一个时间表。 多个连续的时间分区被定义并分配给各个处理器。 接收到一个查询以聚合时间表的至少一个属性。 响应于该查询,在时间表中识别多个时间戳,将各个时间戳分配给各个时间分区,使用各个处理器在每个分区内计算多个时间戳的至少一个属性中的值变化 分配每个分区的每个分区,并且使用分配给每个分区的相应处理器来聚合每个分区内的值更改,以产生查询的聚合值。
    • 64. 发明授权
    • Manual opening device and electrical switching apparatus employing the same
    • 手动开启装置及采用该装置的电气开关装置
    • US07545245B2
    • 2009-06-09
    • US11414941
    • 2006-05-01
    • Xin ZhouBrad R. LecciaPaul J. Rollmann
    • Xin ZhouBrad R. LecciaPaul J. Rollmann
    • H01H81/00H01H75/02H01H77/02H01H85/00H01H73/00
    • H01H3/227H01H3/46H01H33/666
    • A manual opening device is for an electrical switching apparatus, such as a synchronous circuit breaker, including a housing having an opening, a plurality of pole mechanisms each comprising separable contacts, and at least one operating mechanism including a number of actuators adapted to open and close the separable contacts. The operating mechanism is supported by the housing and includes a corresponding pole shaft. The manual opening device comprises an operating handle, a cam assembly, and a drive assembly. A first end of the operating handle protrudes through the opening of the housing and the second end is coupled to the cam assembly. The drive assembly couples the cam assembly to the corresponding pole shaft of the operating mechanism and cooperates with the corresponding pole shaft and actuators to simultaneously open the separable contacts when the operating handle is moved from a first position to a second position.
    • 手动打开装置用于电气开关装置,例如同步断路器,包括具有开口的壳体,每个包括可分离触点的多个极机构,以及包括多个致动器的至少一个操作机构, 关闭可分离的触点。 操作机构由壳体支撑,并包括相应的极轴。 手动打开装置包括操作手柄,凸轮组件和驱动组件。 操作手柄的第一端通过壳体的开口突出,并且第二端联接到凸轮组件。 驱动组件将凸轮组件连接到操作机构的相应极轴,并与相应的极轴和致动器配合,以在操作手柄从第一位置移动到第二位置时同时打开可分离触点。