摘要:
A fiber optic sensor for sensing the presence of an analyte has a plurality of optical fibers each of which has at least one analyte sensing segment and one or more low loss lead portion, where the optical fibers are disposed on the periphery of a fiber carrier. The analyte sensing segments may be disposed in an offset relationship to provide continuous detection over a desired distance or they may be spaced apart to provide detection at selected locations. More than one set of optical fibers with sensing segments may be combined to provide detection of multiple analytes. Multiple fiber carriers allow each segment or the grouped sets of segments to be coupled together over a distance either in offset relationship or in spaced apart relationship.
摘要:
Computer-readable media, systems, and methods for building a multidimensional data cube having one or more high-cardinality attributes are described. In embodiments, data is extracted from one or more databases. It is determined that one or more instances of the data are fact data and one or more instances of the data are dimension data. Each member of the fact data is one instance of a dimension and each instance of the dimension data includes an attribute for grouping the fact data. Moreover, in embodiments it is determined that one or more instances of the dimension data are high-cardinality attributes. The one or more high-cardinality attributes are processed with fact data and stored in fact tables on a computer storage medium.
摘要:
The subject invention pertains to the integration of an object model and a multidimensional database query language such as MDX. In particular, multidimensional declarative query language entities can be exposed through objects in an object model. The object model enables generation and employment of procedural language functions, routines, or procedures that interact with multidimensional database data. This effectively provides an extension for multidimensional query languages. For example, procedures can be stored and invoked from a declarative language query. Furthermore, the object model disclosed herein can expose a context object to enable conditional procedures based on the context of execution.
摘要:
In a centrifugal oil separator in an internal combustion engine including a centrifuge housing which is placed in a rotationally fixed manner onto a rotating centrifuge shaft, the centrifuge housing is manufactured from plastic and a metal bushing is integrated into the centrifuge housing and is slipped onto the centrifuge shaft.
摘要:
Compressing system paths in a database is disclosed. The systems and methods of the invention define an efficient mechanism to specify a cell's location within the database where there are hierarchies of levels within a dimension. The compressed system paths allow random access of the data without decompressing the data. The format used lends itself well to indexing, and also to creating aggregations of the cell data.
摘要:
A system, method, and related techniques are disclosed for processing data across a distributed network to a plurality of machines. The method may include receiving a first user-supplied transform and generating a first package based on the first user-supplied transform. The method may further include receiving a designated key and generating a second package based on the key. Furthermore, the method may include receiving a second user-supplied transform and generating a third package based on the second user-supplied transform. Moreover, the method may include distributing the first, second, and third packages to a plurality of machines using a cluster API.
摘要:
Systems and methods for storing and retrieving data items in multidimensional databases are provided. Data partition templates are generated for grouping data partitions that are similar to one another, that is, that contain information specified according to particular common characteristics (for instance, time, product, geography, etc.). The data partition template includes one or more rules concerning how the data stored in partitions associated with the data partition template should be processed. A template object having the rule(s) associated therewith is generated for the data partition template. Once a data partition template is generated, a plurality of partitions are generated in accordance therewith. Each of the plurality of partitions utilizes the template object associated with the data partition template. In this way, the overhead associated with managing the partitions is significantly decreased.
摘要:
A data model for accessing data in a relational database in an OLAP system utilizes a multiple-hierarchy dimension. The dimension includes a set of attributes. Each attribute is bound to a column in the relational database. A logical structure is defined, indicating the relationships between the attributes. Hierarchies are defined. Each hierarchy includes a sequence of attributes. A hierarchy provides a common drill-down path that a database user can utilize to access the database. A hierarchy can include a single attribute or a combination of attributes. Both the relationships between the attributes and the sequence of attributes in a hierarchy are defined independent of any restrictions associated with the database.
摘要:
Custom grouping for dimension members of an On-Line Analytical Processing (OLAP) cube is facilitated by an interface component that receives a grouping from a user. A modification component alters an attribute of a session OLAP data cube or a virtual OLAP multi-dimensional data cube so that the change becomes readily available without the time-consuming delay associated with rebuilding or reprocessing the underlying structure. A data scheme generation component produces a data definition language (DDL) definition of a user defined attribute executed by an execution component to affect the change to a data cube. Custom groupings can provide an intermediate dimension level for drill down and/or drill up or roll-up between a level with few members and a level with numerous members. A separate dimensional attribute or level can be created and a group defined comprising or mapping a set or collection of discrete members.
摘要:
A system and method for analytically modeling data with related attributes is disclosed. A single dimension is used to provide data according to each of the related attributes, and, thus, may be said to play the role of each related attribute depending on a received query. The measure of the analytical data model is tied to the dimension according to both data attributes to allow the measure to be analyzed by the dimension according to both attributes.