Abstract: 1. Implementations of the present disclosure include receiving, by a database system, a query from an entity, providing a parse tree based on the query, the parse tree including nodes representative of operations to be executed and data objects stored within the database system, generating a module tree based on the parse tree, the module tree including a set of modules provided in sequential order from a root module to a leaf module, and executing an authorization check using the module tree by, for each module, determining a set of data objects and, for each data object in the set of data objects, determining whether the entity is one or more of authorized access the data object and perform an operation on the data object.

Abstract: The present invention relates generally to measuring lengths. Typically one would use a ruler or tape ruler to measure units of distance, and to measure surface area of objects of a variety of shapes and sizes. However, in existing technology when using a ruler or tape ruler one cannot measure objects with complex shapes and sizes such as objects with a curved path, curved shape or irregular shape. Therefore, this new invention of Tapeless Measure Gauge provides a handheld digital rolling measuring gauge in a single item solution to accurately measure such objects varying from a flat surface, to a curved surface or shape or irregular shape.

Abstract: The present invention relates generally to measuring lengths. Typically one would use a ruler or tape ruler to measure units of distance, and to measure surface area of objects of a variety of shapes and sizes. However, in existing technology when using a ruler or tape ruler one cannot measure objects with complex shapes and sizes such as objects with a curved path, curved shape or irregular shape. Therefore, this new invention of Tapeless Measure Gauge provides a handheld digital rolling measuring gauge in a single item solution to accurately measure such objects varying from a flat surface, to a curved surface or shape or irregular shape.

Abstract: The present invention relates generally to a new type of inductive displacement sensor, composed of a scale and a winding element. The scale is a conductor with two rows of parallel and uniform distribution of a grid. The scale and winding elements can be moved in the direction of the grid distribution. The winding element is spaced on opposing face of the scale; the winding elements include the first winding, the second winding, the third winding and the fourth winding. The first winding and the second winding cross wind to form the driving winding element, thereby forming the pattern, third winding fourth cross winding constitute two sensing winding elements, with the two sensing winding elements along the direction perpendicular to the grid distribution of each side of the element distribution in driving winding forming patterns. One end of the first winding is connected to one end of the second winding and form a common end which is connected with the electronic device.

Abstract: An axle box suspension positioning device for a railway vehicle is provided, which includes a guide column assembly. The guide column assembly includes a fixed end connected to a frame of the railway vehicle, and a free end which is extendable and retractable from an opening of the axle box. An elastic positioning component is provided in the opening, and the elastic positioning component limits a movement of the free end along a running direction of the vehicle with respect to the frame. The arrangement of the elastic positioning component enables the axle box suspension positioning device to have a large positioning rigidity. A bogie having the axle box suspension positioning device is also provided.

Abstract: An axle box suspension positioning device for a railway vehicle is provided according to the present application, which includes a guide column assembly. The guide column assembly includes a fixed end connected to a frame of the railway vehicle, and a free end which is extendable and retractable from an opening of the axle box. An elastic positioning component is provided in the opening, and the elastic positioning component limits a movement of the free end along a running direction of the vehicle with respect to the frame. The arrangement of the elastic positioning component enables the axle box suspension positioning device to have a large positioning rigidity. A bogie having the axle box suspension positioning device is further provided according to the present application.