Abstract: Systems, methods, and devices for retrying a query. A method includes receiving a query directed to database data and assigning execution of the query to one or more execution nodes of an execution platform, the one or more execution nodes configured to execute the query on a first version of a database platform. The method includes determining that execution of the query was unsuccessful. The method includes assigning a first retry execution of the query to the one or more execution nodes of the execution platform and determining whether a regression or an intermittent fault caused the execution of the query to be unsuccessful based at least in part on whether the first retry execution of the query was successful or unsuccessful.

Abstract: Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

Abstract: An embodiment provides a method for measuring dissolved oxygen of an aqueous sample, including: introducing an aqueous sample into a measurement device comprising at least two dissolved oxygen sensors, wherein at least one of the at least two dissolved sensors comprises a trend sensor and at least another of the at least two dissolved sensors comprises a reference sensor; measuring a first value of dissolved oxygen using the trend sensor, wherein the trend sensor samples at a trend frequency; measuring a second value of dissolved oxygen from a reference sensor, wherein the reference sensor samples at a reference frequency, the reference frequency being less than the trend frequency; and correcting the first value of dissolved oxygen based upon the second value of dissolved oxygen. Other aspects are described and claimed.

Abstract: A surgical robotic component comprising an articulated terminal portion, the terminal portion comprising: a distal segment having an attachment for a surgical tool; a basal segment for attaching the terminal portion to the remainder of the surgical robotic component; and an intermediate compound joint between the distal segment and the basal segment, the intermediate compound joint permitting relative rotation of the distal segment and the basal segment about first, second and third axes; the terminal portion being arranged such that, in at least one configuration of the intermediate compound joint: (i) the axial direction of the basal segment is parallel to the axial direction of the distal segment, and (ii) the first, second and third axes are transverse to the axial directions of the basal and distal segments.

Abstract: Various embodiments provide a hopper railroad car top hatch cover assembly including a hatch cover and a hatch cover securer configured to secure the hatch cover in a closed position engaging a coaming of the hopper railroad car. Various embodiments provide a hopper railroad car having a top hatch cover assembly including a hatch cover and a hatch cover securer configured to secure the hatch cover in a closed position engaging a coaming of the hopper railroad car.

Abstract: Apparatus and methods are presented for enhancing the acquisition speed or performance of Fourier domain optical coherence tomography. In preferred embodiments a plurality of wavelength combs containing interleaved selections of wavelengths from a multi-wavelength optical source are generated and projected onto a sample. In certain embodiments the wavelength combs are projected simultaneously onto a plurality of regions of the sample, while in other embodiments the wavelength combs are projected sequentially onto the sample. Light in the wavelength combs reflected or scattered from the sample is detected in a single frame of a sensor array, and the detected light processed to obtain a tomographic profile of the sample. In preferred embodiments the wavelength comb generator comprises a wavelength interleaver in the form of a retro-reflective prism array for imparting different displacements to different selections of wavelengths from the optical source.

Abstract: Methods and apparatus are provided for optical coherence metrology or tomography across an extended area of an eye with improved registration. At least two optical coherence tomograms are acquired, with each tomogram containing data from regions of an anterior surface of the eye that are at least partially overlapping, and data from one or more deeper structures such as the retina or the anterior or posterior lens surfaces. The tomograms are then processed to register the data from the overlapping portions of the anterior surface regions, thereby registering the data from the deeper structures. In certain embodiments the reference arm of the apparatus comprises a compound reflector having at least two axially separated reflective surfaces for applying differential delays to different portions of the reference beam. The depth of field of the apparatus is thereby extended to enable measurement of eye length.

Abstract: An authentication server may not support all types of user credentials. For example, an on-premise authentication server may support credentials based on user secrets (i.e. username and password) and certificate-based credentials, but not hardware-key based credentials. A client device may use an un-supported type of credential to access resources managed by the on-premise authentication server by authenticating with a web-based authentication server. The web-based authentication server may support any type of credential, and the supported types of credentials may change over time. The web-based authentication server returns an authenticated user token indicating the user has been authenticated, but without authorizing access to any resources. The client device uses the on-premise authentication server to exchange the authenticated user token for an authorized user token. The client device then uses the authorized user token to access resources on the on-premise network.

Abstract: A housing for a seismic sensor station has a base and a removable lid, which when assembled together form a shell whereby the base and the removable lid both have a shell side and an exterior side. A sensor spike, protruding outward from the shell, may be attached to the base on the exterior side of the base. The housing is further provided with two cable docking ports, each allowing passage of a fiber optical cable from outside to inside the shell. The two cable docking ports are exclusively provided in the removable lid.

Abstract: A distributed optical detection system comprising: a broadband optical source; and a phase and amplitude receiver for measuring phases and amplitudes of distributed backscattered signals from a sensing medium. Methods of quantitatively sensing optical path length changes along a sensing medium in a distributed manner are also disclosed.

Abstract: A system for securely depositing an item includes: a deposit box with a door configured to provide selective access to an interior space in the deposit box; a lock mechanism configured to attach to the deposit box to selectively block the door from opening; a first proximity sensor operatively connected to the lock mechanism to operate the lock mechanism to block the door or allow the door to open; a second proximity sensor configured to be attached to at least one of: a delivery person and a piece of delivery equipment; a third proximity sensor; and a first transmitter operatively connected to the lock mechanism and configured to transmit a signal indicative of operating information regarding the lock mechanism.

Abstract: A surgical robot comprising an articulated arm, the arm having a terminal portion comprising: a distal segment having an attachment for a surgical instrument; an intermediate segment; and a basal segment whereby the terminal portion is attached to the remainder of the arm; a first articulation between the distal segment and the intermediate segment, the first articulation permitting relative rotation of the distal segment and the intermediate segment about a first axis; and a second articulation between the intermediate segment and the basal segment, the second articulation permitting relative rotation of the intermediate segment and the basal segment about a second axis; wherein: the intermediate segment comprises a third articulation permitting relative rotation of the distal segment and the basal segment about third and fourth axes; and the first, second and third articulations are arranged such that in at least one configuration of the third articulation the first and second axes are parallel and the thir

Abstract: Examples are disclosed that relate to dynamically controlling light sources on an optically trackable peripheral device. One disclosed example provides a near-eye display device comprising an image sensor, a communications subsystem, a logic subsystem, and a storage subsystem. The storage subsystem stores instructions executable by the logic subsystem to control a peripheral device comprising a plurality of light sources by receiving image data from the image sensor, identifying in the image data a constellation of light sources formed by a subset of light sources of the peripheral device, and based upon the constellation of light sources identified, send to the peripheral device via the communications subsystem constellation information related to the constellation of light sources identified.

Abstract: Systems, methods, and devices for retrying a query. A method includes receiving a query directed to database data and assigning execution of the query to one or more execution nodes of an execution platform, the one or more execution nodes configured to execute the query on a first version of a database platform. The method includes determining that execution of the query was unsuccessful. The method includes assigning a first retry execution of the query to the one or more execution nodes of the execution platform and determining whether a regression or an intermittent fault caused the execution of the query to be unsuccessful based at least in part on whether the first retry execution of the query was successful or unsuccessful.

Abstract: Systems and methods for performing netting of business-to-business payments for settlement of running balances between parties are provided. To that end, blockchain infrastructures allow smart contracts that may be suitable for subrogation and netting operations, and the smart contracts that facilitate the operations. Application-programming interfaces (APIs) are provided that may be used to interact with the smart contracts.

Abstract: This invention relates to polynucleotides comprising optimized GALC open reading frame (ORF) sequences, vectors comprising the same, and methods of using the same for delivery of the ORF to a cell or a subject and to treat disorders associated with aberrant expression of a GALC gene or aberrant activity of a GALC gene product in the subject, such as Krabbe disease (i.e., globoid cell leukodystrophy (GLD)).

Abstract: A walking aid accessory that is an aesthetic glider for a walker and a method of manufacturing.

Abstract: A system and method are provided for training a machine learning system. In an embodiment, the system generates a three-dimensional model of an environment using a video sequence that includes individual frames taken from a variety of perspectives and environmental conditions. An object in the environment is identified and labeled, in some examples, by an operator, and a three-dimensional model of the object is created. Training data for the machine learning system is created by applying the label to the individual video frames of the video sequence, or by applying a rendering of the three-dimensional model to additional images or video sequences.

Abstract: Apparatus and methods are presented for enhancing the acquisition speed or performance of Fourier domain optical coherence tomography. In preferred embodiments a plurality of wavelength combs containing interleaved selections of wavelengths from a multi-wavelength optical source are generated and projected onto a sample. In certain embodiments the wavelength combs are projected simultaneously onto a plurality of regions of the sample, while in other embodiments the wavelength combs are projected sequentially onto the sample. Light in the wavelength combs reflected or scattered from the sample is detected in a single frame of a sensor array, and the detected light processed to obtain a tomographic profile of the sample. In preferred embodiments the wavelength comb generator comprises a wavelength interleaver in the form of a retro-reflective prism array for imparting different displacements to different selections of wavelengths from the optical source.

Abstract: A robotic surgical instrument comprising a shaft, an articulated section and a drive mechanism. The articulated section extends from the shaft and terminates at its distal end in a tip. The tip has an attachment for an end effector. The drive mechanism drives the articulated section via flexible driving elements thereby altering the angular orientation of the tip relative to the shaft. The drive mechanism is controlled so as to always fully compress the articulated section along at least one extent by which the articulated section connects the tip and the shaft whilst driving the articulated section from any one configuration to any other configuration. The drive mechanism constrains movement of the articulated section so as to permit the tip to move with two degrees of rotational freedom and no degrees of translational freedom relative to the shaft.