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    • 61. 发明申请
    • Method and system for processing abstract derived entities defined in a data abstraction model
    • 用于处理在数据抽象模型中定义的抽象派生实体的方法和系统
    • US20060020582A1
    • 2006-01-26
    • US10897353
    • 2004-07-22
    • Richard DettingerRichard StevensJeffrey Tenner
    • Richard DettingerRichard StevensJeffrey Tenner
    • G06F17/30
    • G06F16/248G06F16/2428
    • A method, apparatus and article of manufacture for utilizing an abstract derived entity are disclosed. An abstract derived entity is a data object present in an abstract data model that may be referenced by other entities in the abstract data model as though it were a relational table present in a physical data source. In one embodiment, an abstract data model provides data access independent of the manner in which the data is physically represented in a set of physical data sources. In addition, an abstract derived entity may be used to provide aggregate data joined with other non-aggregate data. Aggregate data values are calculated from the column of a relational table, or other sets of input data. In one embodiment, an abstract derived entity may describe a describe relational table comprising a set of aggregate data used to form a column of the relational table joined to other columns formed from the sets of input data specified by the abstract derived entity. The resulting abstract derived table may be queried as though it were an actual relational table stored in a physical data source.
    • 公开了一种利用抽象派生实体的方法,装置和制品。 抽象派生实体是呈现在抽象数据模型中的数据对象,其可以被抽象数据模型中的其他实体引用,就像它是物理数据源中存在的关系表一样。 在一个实施例中,抽象数据模型提供独立于在一组物理数据源中物理表示数据的方式的数据访问。 此外,抽象派生实体可用于提供与其他非汇总数据连接的汇总数据。 汇总数据值根据关系表列或其他输入数据集计算。 在一个实施例中,抽象派生实体可以描述描述关系表,其包括用于形成连接到由抽象派生实体指定的输入数据组形成的其他列的关系表的列的聚合数据集合。 所得到的抽象派生表可以被查询,就像它是存储在物理数据源中的实际关系表一样。
    • 62. 发明申请
    • Method and system for providing aggregate data access
    • 提供聚合数据访问的方法和系统
    • US20060020580A1
    • 2006-01-26
    • US10897333
    • 2004-07-22
    • Richard DettingerRichard StevensJeffrey Tenner
    • Richard DettingerRichard StevensJeffrey Tenner
    • G06F17/30
    • G06F17/30595
    • A method and apparatus for defining and processing aggregate data is disclosed. Using database abstraction techniques, a set of logical fields may be used to compose queries of a set of underlying physical data sources. In one embodiment, a logical field may represent an aggregate data value calculated from the elements appearing in a column of a relational table in an underlying physical data source. The elements may be divided into to subsets to calculate multiple aggregate values. An abstract derived entity is a data object present in a database abstraction model that may be accessed as though it were a relational table contained in an underlying physical data source. In one embodiment, columns of the table defined by the abstract derived entity may be populated with aggregate data values joined to other data as specified by a composition rule included in the definition of the abstract derived entity.
    • 公开了一种用于定义和处理聚合数据的方法和装置。 使用数据库抽象技术,可以使用一组逻辑字段来构成一组底层物理数据源的查询。 在一个实施例中,逻辑字段可以表示从出现在底层物理数据源中的关系表的列中的元素计算的聚合数据值。 元素可以分为子集,以计算多个聚合值。 抽象派生实体是存在于数据库抽象模型中的数据对象,可以被访问,就像它是包含在底层物理数据源中的关系表一样。 在一个实施例中,由抽象派生实体定义的表的列可以填充与由包括在抽象派生实体的定义中的组合规则指定的其他数据连接的聚合数据值。
    • 66. 发明申请
    • SYSTEM FOR DETERMINATION OF DOWNHOLE POSITION
    • 用于确定井下位置的系统
    • US20120173196A1
    • 2012-07-05
    • US13401293
    • 2012-02-21
    • Antoni MiszewskiRichard StevensBenjamin Brooking
    • Antoni MiszewskiRichard StevensBenjamin Brooking
    • G06F15/00
    • E21B47/024E21B47/022G01C19/38
    • A measurement means for a downhole tool for determining the orientation of the axis of a downhole tool in relation to true north. It includes a gyro sensor capable of measuring angular rate, a rotation means for rotating the gyro sensor about a sensor axis, a measurement means to detect the angular rate at the gyro sensor as it is rotated to form a series of readings, and a processor capable of interpreting the signal amplitude from the series of readings and determining the points of greatest signal amplitude. The processor is also being capable of comparing the phase difference between the actual readings taken against what would be generated with the sensor pointing true north thus providing a downhole tool axis angular deviation from true north. The rotation means rotates the gyro sensor in discrete steps.
    • 井下工具的测量装置,用于确定井下工具相对于真北的轴线的取向。 它包括能够测量角速率的陀螺仪传感器,用于围绕传感器轴旋转陀螺传感器的旋转装置,用于检测陀螺仪传感器旋转以形成一系列读数时的角速率的测量装置,以及处理器 能够解读来自该系列读数的信号幅度并确定最大信号幅度的点。 处理器还能够比较实际读数之间的相位差与传感器指向真北部所产生的相位差,从而提供井下工具轴与真北的角度偏差。 旋转装置以离散步骤旋转陀螺传感器。