摘要:
A method and apparatus for measuring parameters of a receiver having a mixer for generating an I signal and a Q signal using an input signal, an I channel circuit for processing the I signal, and a Q channel circuit for processing the Q signal. The method includes feeding the receiver a first testing signal before the mixer. The method includes feeding the receiver a second testing signal on the I channel circuit. The method includes feeding the receiver a third testing signal on the Q channel circuit. The method includes measuring I/Q quadrature deviation and I/Q delay imbalance of the receiver using the first, the second, and the third testing signals. This separates the I/Q quadrature deviation and I/Q delay imbalance.
摘要:
Architecture employs an iterative process that incrementally discovers inter-component interactions and explores local state spaces within each component. Thus, the architecture lazily constructs the behavior of the environment of a component in the target software system, and integrates the construction of the inter-component interactions with the model checking process itself, and hence, does not need to eagerly construct the interface process. Component-based state space reduction is applied during the exploration of the whole system. The architecture decomposes a target software system into a set of loosely coupled components where interactions between the components tend to be significantly simpler than interactions within each component. An iterative algorithm facilitates the component-based state space reduction, which is exponential, on the real large-scale software systems.
摘要:
A system and method for identifying a deviation during clinical pathway execution. The system comprises: a clinical pathway storage component configured to store a clinical pathway; a semantic relationship storage component configured to store a semantic relationship between activities; a receiver component configured to receive an activity inputted from a user; and an activity matching component configured to judge, based on the semantic relationship between activities, whether the inputted activity matches the requisite activity defined in the clinical pathway, and if it is determined that the inputted activity does not match the requisite activity defined in the clinical pathway, generate a first clinical pathway execution deviation report, wherein the first clinical pathway execution deviation report indicates that an undefined redundant activity is executed. This permits the precision of identifying deviation during clinical pathway execution to be improved.
摘要:
The present invention relates to a blind adaptive filter for narrowband interference cancellation, which includes an adaptive filter, a delay unit coupled to the adaptive filter for generating a delayed signal with a predetermined delay length from the output signal of the adaptive filter, and an error calculation unit coupled to the adaptive filter and the delay unit. The error calculation unit compares the output signal from the adaptive filter and the delayed signal from the delay unit to extract error information, and feedback the first error information to the adaptive filter. The first error information is formed of a transfer function including a number of coefficients, and used to adjust the adaptive filter and remove interference in the next input signal. The disclosed technique is also applicable in wideband receivers, as well as resisting multiple strong narrowband interferences having a frequency sweep rate of tens of milliseconds.
摘要:
An exemplary metal structure (10, 30) includes a base portion (14, 34), a flange (122, 322), and an edge portion (1241, 3241). The base portion defines a circular flanged hole (12, 32). The flange extends from a top surface of the base portion and the flange surrounds the circular flanged hole. The edge portion is configured for connecting an inside surface of the flange and the top surface of the base portion. The edge portion includes an edge surface, and a ratio of a radius of the edge surface (1242, 3242) of the edge portion with respect to a thickness of the base portion is less than 0.4. A method for making a circular flanged hole in a metal sheet (15) is also provided.
摘要:
A method and apparatus for measuring parameters of a receiver having a mixer for generating an I signal and a Q signal using an input signal, an I channel circuit for processing the I signal, and a Q channel circuit for processing the Q signal. The method includes feeding the receiver a first testing signal before the mixer. The method includes feeding the receiver a second testing signal on the I channel circuit. The method includes feeding the receiver a third testing signal on the Q channel circuit. The method includes measuring I/Q quadrature deviation and I/Q delay imbalance of the receiver using the first, the second, and the third testing signals. This separates the I/Q quadrature deviation and I/Q delay imbalance.
摘要:
The present invention provides a method for transforming a concept-based query into SQL query statements, comprising the steps of: transforming inputted concept-based queries into logic rules; checking validity of the logic rules; optimizing the valid logic rules; and translating the logic rules into SQL query statements in accordance with the optimization result. The present invention further provides corresponding transformation engine, database query system and computer program product. The present invention facilitates people to use more descriptive query language to query data stored in relational database. Furthermore, the present invention can automatically generate the correct and efficient SQL query statements so that people's efforts to deal with complex data model are saved significantly.
摘要:
An XML querying method and system for constructing an XQuery/XPath query to a schema variable XML document. The method includes: receiving the query from a client computer; generating a tree structure; and generating, by query rewriting, an XQuery/XPath for the XML document based on the tree structure and configurable query constraints. The system includes: a tree structure generating unit for generating a tree structure; and a query writing unit for generating an XQuery/XPath query for the XML document based on the tree structure and configurable query constraints.
摘要:
An exemplary flipping apparatus includes a slider, a flipping member and a holding table. The slider is slanted relative to the horizon. A first end of the flipping member is connected to the slider. The flipping member includes a first flipping plate and a second flipping plate facing the first flipping plate. The first flipping plate and the second flipping plate are contoured to define a workplace groove to receive a workpiece to be flipped. An angle defined by the slider and an end section of the first flipping plate opposite to the slider is less than an angle between the slider and the horizon. The holding table is connected to a second end of the flipping member, and the second end is opposite to that of the first end of the flipping member.
摘要:
A transport arm of the present disclosure includes a pneumatic cylinder and an acting arm. The pneumatic cylinder includes a main body, a piston rod, a piston and a guiding pin. A chamber is defined in the main body. The piston rod is partially received in the chamber of the main body. The piston rod defines a guiding groove therein, and a section of the guiding groove is slanted relative to an axis of the piston rod. The piston is fixed to the piston rod and partitions the chamber of the main body into two chambers. The guiding pin is fixed to the main body, and an end of the guiding pin adjacent to the guiding groove of the piston rod moveably engages in the guiding groove. The acting arm is fixed to an end of the piston rod opposite to the piston.