Abstract: Method and system for recording data describing a first entity, the data endorsed by a second entity comprising the second entity validating data describing the first entity, wherein an identifier is associated with the data, the identifier being generated from a public key of the first entity. Cryptographically signing data corresponding with the data describing the first entity using at least a private key of the second entity. Posting a transaction to a block chain including the cryptographically signed data. Method and system for obtaining data describing a first entity the data endorsed by a second entity comprising. Receiving an identifier of data describing the first entity. Retrieving an entry from a block chain based on the received identifier. Authenticating the entry using a public key of the second entity. Extracting the data describing the first entity from the retrieved entry.

Abstract: Disclosed are systems and methods for obtaining input data comprising properties associated with at least one parent well and a child well associated with the at least one parent well, dividing the input data into a training data subset, a validation data subset, and a test data subset, selecting at least one machine learning model using the training data subset, the validation data subset, and the test data subset based on k-fold cross validation, tuning hyper parameters for each of the at least one machine learning model, and generating a learning output using the at least one machine learning model and the hyper parameters for each of the at least one machine learning model, the learning output indicating a test root-mean-square error (RMSE) and a training RMSE.

Abstract: A wellbore trajectory survey, having an ordered plurality of survey points, is acquired. Each of the plurality of survey points has a measured depth, an inclination, and a geographic location of the point in the wellbore corresponding to the survey point. The wellbore trajectory survey is ordered on measured depth. The processor identifies a minimum lateral measured depth (min_LMD), a maximum lateral measured depth (max_LMD). The processor identifies a mid-lateral point (mid_LMP) in the plurality of survey points whose measured depth (mid_LMD) is greater than min_LMD and less than max_LMD.

Abstract: A computer-implemented method for securing a user device is disclosed. A signed device authentication key is requested and received from a user application executing on the user device. The signed device authentication key is obtained via a software module installed on the user device and associated with a secure data processing provider. A device setup request is transmitted from the user device to the secure data processing system using the signed device authentication key. The device setup request comprises the signed device authentication key. The authenticity of the device setup request is verified at the secure data processing system based on the signed device authentication key.

Abstract: A starter motor controller for a starter motor operatively connected to a single coil solenoid includes a first pair of switches including a first solenoid switch and a second solenoid switch. The first solenoid switch selectively completes a first electrical circuit for delivering a first electrical current to the single coil solenoid and the second solenoid switch selectively completes a second electrical circuit for delivering a second electrical current to the single coil solenoid that is less than the first electrical current. A second pair of switches includes a first starter motor switch and a second starter motor switch. The first starter motor switch selectively completes a first electrical circuit for delivering a first electrical power to the starter motor and the second starter motor switch selectively completes a second electrical circuit for delivering a second electrical power to the starter motor that is greater than the first electrical power.

Abstract: The present invention relates to lipase variants. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

Abstract: A starter motor controller for a starter motor operatively connected to a single coil solenoid includes a first pair of switches including a first solenoid switch and a second solenoid switch. The first solenoid switch selectively completes a first electrical circuit for delivering a first electrical current to the single coil solenoid and the second solenoid switch selectively completes a second electrical circuit for delivering a second electrical current to the single coil solenoid that is less than the first electrical current. A second pair of switches includes a first starter motor switch and a second starter motor switch. The first starter motor switch selectively completes a first electrical circuit for delivering a first electrical power to the starter motor and the second starter motor switch selectively completes a second electrical circuit for delivering a second electrical power to the starter motor that is greater than the first electrical power.

Abstract: One example of well treatment design based on three-dimensional wellbore shape can be implemented as a computer-implemented method. Wellbore data including acoustic logging data that defines an internal shape of a wall of the wellbore at multiple locations around the perimeter of the wellbore can be received. A volume of an open hole portion of the wellbore that includes the multiple locations can be determined using the wellbore data. Using the volume of the open hole portion of the wellbore, a volume of a fluid loss treatment to treat the portion of the wellbore for well fluid loss can be determined.

Abstract: An electric machine configured to increase resistance between a brush and a commutator of the electric machine at a wear condition of the brush consistent with end of service life.

Abstract: Method and system for transferring digital currency from a payer to recipient comprising receiving an identifier of data describing the first entity. Retrieving an entry from a block chain based on the received identifier. Authenticating the entry using a public key of the second entity. Extracting the data describing the first entity from the retrieved entry. Authenticating a block in the block chain containing the entry using a public key of a third entity. If the authentication of the block in the block chain is successful then transferring digital currency from a payer to a recipient, wherein the first entity is the payer or the recipient, and wherein transferring digital currency from the payer to the recipient comprises the payer. Obtaining wallet public key data associated with the recipient. Generating, using at least the wallet public key data, a currency public key for the amount of digital currency to be transferred to the recipient.

Abstract: Method and system for recording data describing a first entity, the data endorsed by a second entity comprising the second entity validating data describing the first entity, wherein an identifier is associated with the data, the identifier being generated from a public key of the first entity. Cryptographically signing data corresponding with the data describing the first entity using at least a private key of the second entity. Posting a transaction to a block chain including the cryptographically signed data. Method and system for obtaining data describing a first entity the data endorsed by a second entity comprising. Receiving an identifier of data describing the first entity. Retrieving an entry from a block chain based on the received identifier. Authenticating the entry using a public key of the second entity. Extracting the data describing the first entity from the retrieved entry.

Abstract: Methods and devices for use in shuttle drills. The exercise device includes a base having a plate and a central vertical member configured to receive blocks retrieved during a shuttle drill, and several blocks configured to be placed at varying distances from the base and to be picked up by a participant and stacked on the base. The method includes placing blocks of varying colors at varying distances from a base that has a plate and a central vertical member. A participant is instructed to run to the block closest to the base, pick up the block closest to the base, run back with the block to the base and stack the block around the central vertical member, and to repeat the running, picking up, and running back steps until there are no more blocks to be picked up and all blocks are stacked around the central vertical member.

Abstract: An electric machine configured to increase resistance between a brush and a commutator of the electric machine at a wear condition of the brush consistent with end of service life.

Abstract: A starter assembly is provided and includes a shaft to transmit rotation to a ring gear via a pinion and including a first helical spline with angling directed reversely with respect to a direction of the rotation and an elastic element anchored on the first helical spline to bias the pinion in an axial direction. The ring gear and the pinion include complementary teeth and the pinion defines a bore with a second helical spline to register with the first helical spline such that the pinion teeth are forwardly rotated into ring gear teeth engagement positions as the shaft moves axially relative to the pinion in the axial direction.

Abstract: An apparatus including a rotating member, a resolver and a mounting structure. The resolver includes a resolver stator and a resolver rotor fixedly mounted on the rotating member via a mounting structure. The mounting structure has a low magnetic relative permeability and isolates the resolver rotor from the rotating member by preventing direct contact between the rotating member and the resolver rotor. The disclosed apparatus may be an electric machine having a rotor fixed to the rotating member and be suitable for use in a hybrid vehicle. The mounting structure advantageously has a relative permeability of no greater than about 2 and may be formed out of stainless steel material. The rotating member may be a rotor hub formed out of steel material having a relative permeability of at least about 50.

Abstract: One example of well treatment design based on three-dimensional wellbore shape can be implemented as a computer-implemented method. Wellbore data including acoustic logging data that defines an internal shape of a wall of the wellbore at multiple locations around the perimeter of the wellbore can be received. A volume of an open hole portion of the wellbore that includes the multiple locations can be determined using the wellbore data. Using the volume of the open hole portion of the wellbore, a volume of a fluid loss treatment to treat the portion of the wellbore for well fluid loss can be determined.

Abstract: An electric machine includes a pair of substantially aligned sheet metal housing sections each including a substantially “L” shaped portion, at least one cooling channel being formed at an axial end between the two sections, and a plurality of power electronics components engaged with at least one of the housing sections adjacent the axial end cooling channel. An embodiment includes a stator, a pair of housing sections enclosing the stator, power electronics components positioned at an axial end of the electric machine for controlling operation of the electric machine, and a coolant flow path that includes a power electronics cooling channel formed at the axial end between the housing sections. A method includes forming an axial end cooling channel between two sheet metal housing sections, and positioning power electronics components at the axial end along the cooling channel, whereby heat from the electronics components is transferred to the cooling channel.

Abstract: A method, system, and apparatus, including a program encoded on computer-readable medium, for detecting duplicate data files to be stored in a well job data archive includes identifying a well job data file for storage in a well job data archive and performing an initial duplicate check and a secondary duplicate check to determine if the well job data file is a duplicate of a data file stored in the well job data archive, as well as a quality assurance test of the file data. At least one of the well job data file or one or more of the data files stored in the well job data archive is identified as a duplicate data file based on the initial and secondary duplicate checks, and the well job data file is stored in the well job data archive in accordance with the initial and secondary duplicate checks and the identification of a duplicate data file.

Abstract: A starter assembly is provided and includes a shaft to transmit rotation to a ring gear via a pinion and including a first helical spline with angling directed reversely with respect to a direction of the rotation and an elastic element anchored on the first helical spline to bias the pinion in an axial direction. The ring gear and the pinion include complementary teeth and the pinion defines a bore with a second helical spline to register with the first helical spline such that the pinion teeth are forwardly rotated into ring gear teeth engagement positions as the shaft moves axially relative to the pinion in the axial direction.

Abstract: Some embodiments of the invention provide a starter system including a starter, capable of being in communication with an electronic control unit. The starter can include a motor coupled to a circuit and a pinion including a plunger, and a plurality of solenoid assemblies including a plurality of biasing members. The plurality of solenoid assemblies can include at least one solenoid winding capable of moving the plunger, and at least one solenoid assembly capable of holding the plunger, and at least one solenoid assembly capable of controlling current flow to the motor. Some embodiments include a first switch coupled to the circuit that is capable of being activated by the plunger to control current flowing to at least a portion of the circuit. Some embodiments include at least two power isolation switches capable of controlling a current flow within the circuit.