Abstract: A surgical drill bit for bone drilling and for determining a characteristic of a drilling medium from a characteristic of fluid flow. The surgical drill bit includes a shank portion for coupling to a drill chuck. The shank portion defines a proximal opening. The surgical drill bit also includes a drilling portion for drilling through bone. A distal cutting region (62) of the drilling portion includes a rake surface (66), a clearance surface (68), and a flank surface (70). The flank surface (70) defines a distal opening (72) and is configured to abut the bone such that the distal opening is occluded by the bone while the rake surface is cutting into the bone. The shank and drilling portions collectively define an inner channel in fluid communication with the proximal and distal openings. The distal opening is occluded by the bone during drilling to establish fluid pressure within the inner channel.

Abstract: Methods, systems, and apparatus for quantum simulation of a quantum system. In one aspect, a method includes, for an observable generated from a set of observables, wherein a commutator of each observable in the set of observables with the first Hamiltonian is equal to a combination of observables in the set of observables: encoding, by a quantum computer, a vector of coefficients of a time-dependent representation of the observable in a quantum state of a register of qubits; simulating, by the quantum computer, time evolution of the quantum state under a second Hamiltonian to obtain an evolved quantum state, wherein the second Hamiltonian comprises a matrix of complex weights in the linear combination of observables; measuring, by the quantum computer, the evolved quantum state; and post-processing, by a classical processor, obtained measurement results to obtain an expectation value of the observable.

Abstract: Methods, systems, and apparatus for gradient-based quantum assisted Hamiltonian learning. In one aspect, a method includes obtaining, by a classical processor, multiple experimental data points, wherein each experimental data point is generated according to a Hamiltonian comprising parameters with unknown values; learning, by the classical processor, values of the parameters, comprising iteratively adjusting, by the classical processor and until predetermined completion criteria are met, estimated values of the parameters to minimize a cost function, wherein the cost function is dependent on the multiple experimental data points and at each iteration derivatives of the cost function with respect to respective estimated values of the parameters for the previous iteration are computed using a quantum computer.

Abstract: A surgical drill bit for bone drilling and for determining a characteristic of a drilling medium from a characteristic of fluid flow. The surgical drill bit includes a shank portion for coupling to a drill chuck. The shank portion defines a proximal opening. The surgical drill bit also includes a drilling portion for drilling through bone. A distal cutting region (62) of the drilling portion includes a rake surface (66), a clearance surface (68), and a flank surface (70). The flank surface (70) defines a distal opening (72) and is configured to abut the bone such that the distal opening is occluded by the bone while the rake surface is cutting into the bone. The shank and drilling portions collectively define an inner channel in fluid communication with the proximal and distal openings. The distal opening is occluded by the bone during drilling to establish fluid pressure within the inner channel.

Abstract: Methods, systems, and apparatus for verified quantum phase estimation. In one aspect, a method includes repeatedly performing a experiment. Performing one repetition of the experiment includes: applying a second unitary to a system register of N qubits prepared in a target computational basis state; applying, conditioned on a state of a control qubit, a first unitary to the system register; applying an inverse of the second unitary to the system register and measuring each qubit to determine an output state of the system register; measuring the control qubit to obtain a corresponding measurement result m; and post-selecting on the target computational basis state by, in response to determining that the output state indicates that each qubit was in the target computational basis state prior to measurement, incrementing a first or second classical variable by (?1)m. Phases or expectation values of the first unitary are estimated based on the classical variables.

Abstract: Assay devices, systems, methods, and kits useful for detection of analytes in a bodily fluid sample, such as saliva, are disclosed herein. Assay devices may include a fluid sample collector and an assessment unit to which the fluid sample collector couples. The fluid sample collector may include a cap with a plunger and absorbent member that collects a bodily fluid sample. Insertion of the plunger into the assessment unit during coupling provides pressure-driven fluid flow through a filter rapidly delivering bodily fluid filtrate to one or more test panels which provide the assay result. In embodiments, an on-board light source enables a user to readily detect changes in a test panel indicative of the presence of an analyte thus providing an opportunity for obtaining rapid results with improved confidence.

Abstract: A method and a system for fingerprinting signatures and enhanced signature capturing for charge card transactions on mobile communication devices identify and transform a signature into a normalized representation such as a bytestream including coordinate data and combine the normalized representation with some transaction information into combined data. The combined data is further transformed into fixed length data stored for further analyses or uses. Upon the receipt of a dispute, the stored representation(s) of the signature and some of the stored transaction information of the transaction in dispute may be transformed into a first fixed length data. The first fixed length data may be further compared with the stored fixed length data obtained at the time of the transaction to resolve the dispute. The representations of signatures of multiple transactions may be used to determine whether these multiple transactions belong to the same category or to different categories.

Abstract: Techniques for MRAM patterning using a diamond-like carbon hardmask are provided. In one aspect, a method of forming an MRAM device includes: forming an MRAM stack on a substrate; depositing a metal hardmask layer on the MRAM stack; depositing a diamond-like carbon layer on the metal hardmask layer; forming a patterned resist on the diamond-like carbon layer; patterning the diamond-like carbon layer using the patterned resist to form a diamond-like carbon pillar; patterning the metal hardmask layer using the diamond-like carbon pillar to form a patterned metal hardmask; and patterning the MRAM stack into an MRAM pillar using the patterned metal hardmask to form the MRAM device. An MRAM device is also provided.

Abstract: A furniture member may include a stationary frame assembly and a seat bottom assembly. The stationary frame assembly may include a stationary base frame and a stationary seatback frame that is fixed relative to the base frame. The seat bottom assembly may be supported by the base frame and movable relative to the base frame and the seatback frame between a first position and a second position. The seatback frame is disposed vertically higher than the base frame and the seat bottom assembly.

Abstract: A method and a system for fingerprinting signatures and enhanced signature capturing for charge card transactions on mobile communication devices identify and transform a signature into a normalized representation such as a bytestream including coordinate data and combine the normalized representation with some transaction information into combined data. The combined data is further transformed into fixed length data stored for further analyses or uses. Upon the receipt of a dispute, the stored representation(s) of the signature and some of the stored transaction information of the transaction in dispute may be transformed into a first fixed length data. The first fixed length data may be further compared with the stored fixed length data obtained at the time of the transaction to resolve the dispute. The representations of signatures of multiple transactions may be used to determine whether these multiple transactions belong to the same category or to different categories.

Abstract: Techniques for MRAM patterning using a diamond-like carbon hardmask are provided. In one aspect, a method of forming an MRAM device includes: forming an MRAM stack on a substrate; depositing a metal hardmask layer on the MRAM stack; depositing a diamond-like carbon layer on the metal hardmask layer; forming a patterned resist on the diamond-like carbon layer; patterning the diamond-like carbon layer using the patterned resist to form a diamond-like carbon pillar; patterning the metal hardmask layer using the diamond-like carbon pillar to form a patterned metal hardmask; and patterning the MRAM stack into an MRAM pillar using the patterned metal hardmask to form the MRAM device. An MRAM device is also provided.

Abstract: A furniture member may include a stationary frame assembly and a seatback cushion. The stationary frame assembly may include a stationary base frame, a pair of stationary armrest frames and a stationary seatback frame that is fixed relative to the stationary base frame and the stationary armrest frames. The seatback cushion may include upholstery attached to at least one of the armrest frames. The upholstery may include a portion disposed between the at least one of the armrest frames and the seatback cushion. The portion of the upholstery may be expandable to allow movement of the seatback cushion relative to the stationary base frame, the stationary armrest frames and the stationary seatback frame between an upright position and a reclined position.

Abstract: A furniture member may include a stationary seatback frame, a seat bottom assembly, a legrest mechanism, and a backrest support spring. The seat bottom assembly is movable relative to the seatback frame between a nominal position and a tilt position. The legrest mechanism is movable among a retracted position, a first extended position and a second extended position. A portion of the legrest mechanism contacts the seat bottom assembly when the legrest mechanism is in the first extended position and pushes the seat bottom assembly from the nominal position to the tilt position as the legrest mechanism moves from the first extended position to the second extended position. The backrest support spring includes a first end attached to the seatback frame and a second end attached to the seat bottom assembly and movable with the seat bottom assembly relative to the seatback frame.

Abstract: A method and a system for fingerprinting signatures and enhanced signature capturing for charge card transactions on mobile communication devices identify and transform a signature into a normalized representation such as a bytestream including coordinate data and combine the normalized representation with some transaction information into combined data. The combined data is further transformed into fixed length data stored for further analyses or uses. Upon the receipt of a dispute, the stored representation(s) of the signature and some of the stored transaction information of the transaction in dispute may be transformed into a first fixed length data. The first fixed length data may be further compared with the stored fixed length data obtained at the time of the transaction to resolve the dispute. The representations of signatures of multiple transactions may be used to determine whether these multiple transactions belong to the same category or to different categories.

Abstract: After bonding a second substrate to a first substrate through a bonded material layer to provide a bonded structure, through dielectric via (TDV) openings of different depths are concurrently formed in the bonded structure by performing a single anisotropic etch using fluorine-deficient species that are obtained by dissociation of fluorocarbon-containing molecules.

Abstract: After bonding a second substrate to a first substrate through a bonded material layer to provide a bonded structure, through dielectric via (TDV) openings of different depths are concurrently formed in the bonded structure by performing a single anisotropic etch using fluorine-deficient species that are obtained by dissociation of fluorocarbon-containing molecules.

Abstract: A furniture member may include a stationary frame assembly and a seat bottom assembly. The stationary frame assembly may include a stationary base frame and a stationary seatback frame that is fixed relative to the base frame. The seat bottom assembly may be supported by the base frame and movable relative to the base frame and the seatback frame between a first position and a second position. The seatback frame is disposed vertically higher than the base frame and the seat bottom assembly.

Abstract: A furniture member may include a stationary frame assembly and a seatback cushion. The stationary frame assembly may include a stationary base frame, a pair of stationary armrest frames and a stationary seatback frame that is fixed relative to the stationary base frame and the stationary armrest frames. The seatback cushion may include upholstery attached to at least one of the armrest frames. The upholstery may include a portion disposed between the at least one of the armrest frames and the seatback cushion. The portion of the upholstery may be expandable to allow movement of the seatback cushion relative to the stationary base frame, the stationary armrest frames and the stationary seatback frame between an upright position and a reclined position.

Abstract: A furniture member may include a stationary seatback frame, a seat bottom assembly, a legrest mechanism, and a backrest support spring. The seat bottom assembly is movable relative to the seatback frame between a nominal position and a tilt position. The legrest mechanism is movable among a retracted position, a first extended position and a second extended position. A portion of the legrest mechanism contacts the seat bottom assembly when the legrest mechanism is in the first extended position and pushes the seat bottom assembly from the nominal position to the tilt position as the legrest mechanism moves from the first extended position to the second extended position. The backrest support spring includes a first end attached to the seatback frame and a second end attached to the seat bottom assembly and movable with the seat bottom assembly relative to the seatback frame.

Abstract: A PV array rail mounting system for use on support structures that include a substrate and covering material. In an aspect, the PV array rail mounting system is configured to be mounted to a roof with various tile types. In an aspect, the PV array rail mounting system includes a mounting hook for shared rails that allow the rails to be adjustably mounted. The overall PV array rail mounting system is configured to allow a rail be mounted on a roof tiles without the excessive removal of such tiles when mounted.