Abstract: A device and method for performing a user identification of a user include acquiring a first image of the user. A second image of the user that is associated with a previous user identification of the user is selected. The first image and the second image are compared, and a user identification is performed based on the comparison of the first image the second image.

Abstract: The present invention relates to a process for preparation of metal free, nontoxic, hydrocarbon fuel compatible fluorescent carbon quantum dots (CQD), which act as marker as well as lubricity improver. CQDs are highly stable in non-polar hydrocarbons, at ppm level exhibit distinct fluorescent color upon irradiation with light of specific wavelength and exhibit distinct spectral properties compared to non-polar base hydrocarbons.

Abstract: A caliper pig for detecting geometrical deformation of a pipeline is disclosed. The caliper pig includes a body and a first sensor arm assembly. The first sensor arm assembly includes a primary caliper sensor ring adapted to be mounted on the body. Further, the first sensor arm assembly includes a plurality of sensor arms adapted circumferentially distributed on the primary caliper sensor ring. Each of the plurality of sensor arms includes a sensing arm adapted to be in contact with an internal surface of the pipeline and a pair of magnets adapted to rotate along the sensing arm. Each of the plurality of sensor arms includes a sensing unit configured to detect a change in magnetic field based on the movement of the sensing arm. The sensing unit is configured to generate an output indicative of an angle of deflection of the sensing arm while traversing on the internal surface of the pipeline.

Abstract: A system performs a first query to retrieve a commit lag timestamp, where the commit lag timestamp specifies an earliest time instance when a record of an entity is inserted or updated, but is yet to be committed, to a data source. The system determines an inline crawl interval based on the commit lag timestamp. The system performs a second query based on the inline crawl interval to retrieve a number of record identifiers and/or modification dates. The system performs a third query based on the inline crawl interval, where the third query corresponds to records that exist in a data store. The system determines at least one identifier that is missing from the third query due to commit lag based on a difference between data corresponding to the second and third queries. The system persists data corresponding to the second query and the at least one missing identifier.

Abstract: A caliper pig for detecting geometrical deformation of a pipeline is disclosed. The caliper pig includes a body and a first sensor arm assembly. The first sensor arm assembly includes a primary caliper sensor ring adapted to be mounted on the body. Further, the first sensor arm assembly includes a plurality of sensor arms adapted circumferentially distributed on the primary caliper sensor ring. Each of the plurality of sensor arms includes a sensing arm adapted to be in contact with an internal surface of the pipeline and a pair of magnets adapted to rotate along the sensing arm. Each of the plurality of sensor arms includes a sensing unit configured to detect a change in magnetic field based on the movement of the sensing arm. The sensing unit is configured to generate an output indicative of an angle of deflection of the sensing arm while traversing on the internal surface of the pipeline.