Abstract: Voltage-to-current converters that include two current mirrors are disclosed. In an example voltage-to-current converter each current mirror is a complementary current mirror in that one of its input and output transistors is a P-type transistor and the other one is an N-type transistor. Such voltage-to-current converters may be implemented using bipolar technology, CMOS technology, or a combination of bipolar and CMOS technologies, and may be made sufficiently compact and accurate while operating at sufficiently low voltages and consuming limited power.

Abstract: Computer-implemented systems and methods are disclosed for automatically generating and displaying a chronology of events, where events may be represented by data objects in one or more databases. Events/data objects may be identified as relevant to an investigation or analysis based on specified criteria. A timeline may be generated based on the identified set of relevant events, and interactive user interfaces may be generated and displayed that present the events as a timeline and a list. Events may be selected from the timeline or the list, may be identified as key events in the chronology, and additional events related to a selected event may be determined and added to the chronology. Timelines may be compared to other data sets, including other timelines, other event lists, and other relevant data.

Abstract: Computer-implemented systems and methods are disclosed for automatically generating and displaying a chronology of events, where events may be represented by data objects in one or more databases. Events/data objects may be identified as relevant to an investigation or analysis based on specified criteria. A timeline may be generated based on the identified set of relevant events, and interactive user interfaces may be generated and displayed that present the events as a timeline and a list. Events may be selected from the timeline or the list, may be identified as key events in the chronology, and additional events related to a selected event may be determined and added to the chronology. Timelines may be compared to other data sets, including other timelines, other event lists, and other relevant data.

Abstract: Protective gear for a user having an inner panel and an outer panel that is configured so the user can use: only the outer panel; only the inner panel; or both panels together. This allows the user to launder, change and/or replace either panel, without sacrificing the utility of the other panel. The outer panel and the inner panel are temporarily attached to one another when used together. The outer panel's top edge along the user's nose and below the eyes is reinforced with a pliable material, allowing the user to form the top edge of the outer panel to the user's nose and face. There is a small gap in the reinforcements at the nose area, which allows the protective gear to be folded and stored. Both the inner panel and outer panel are formed to cover the user's nose and to accommodate the eye protection worn by the user.

Abstract: Systems and methods are provided for controlling a motor having a rotor and a stator. A motor control module having a processor and a memory is in communication with the motor and is configured to receive an input torque command signal and control a stator current of the motor. The motor control module is further configured to calculate an angular acceleration of the rotor based on the input torque command signal and a rotor inertia. The motor control module calculates an angular velocity based on the calculated angular acceleration of the rotor. The motor control module calculates a stator flux angle based on the calculated angular velocity of the rotor and controls the stator current to generate a magnetic flux at the calculated stator flux angle based on the input torque command signal.

Abstract: Computer-implemented systems and methods are disclosed for automatically generating and displaying a chronology of events, where events may be represented by data objects in one or more databases. Events/data objects may be identified as relevant to an investigation or analysis based on specified criteria. A timeline may be generated based on the identified set of relevant events, and interactive user interfaces may be generated and displayed that present the events as a timeline and a list. Events may be selected from the timeline or the list, may be identified as key events in the chronology, and additional events related to a selected event may be determined and added to the chronology. Timelines may be compared to other data sets, including other timelines, other event lists, and other relevant data.

Abstract: Protective gear for a user having an inner panel and an outer panel that is configured so the user can use: only the outer panel; only the inner panel; or both panels together. This allows the user to launder, change and/or replace either panel, without sacrificing the utility of the other panel. The outer panel and the inner panel are temporarily attached to one another when used together. The outer panel's top edge along the user's nose and below the eyes is reinforced with a pliable material, allowing the user to form the top edge of the outer panel to the user's nose and face. There is a small gap in the reinforcements at the nose area, which allows the protective gear to be folded and stored. Both the inner panel and outer panel are formed to cover the user's nose and to accommodate the eye protection worn by the user.

Abstract: Computer-implemented systems and methods are disclosed for automatically generating and displaying a chronology of events, where events may be represented by data objects in one or more databases. Events/data objects may be identified as relevant to an investigation or analysis based on specified criteria. A timeline may be generated based on the identified set of relevant events, and interactive user interfaces may be generated and displayed that present the events as a timeline and a list. Events may be selected from the timeline or the list, may be identified as key events in the chronology, and additional events related to a selected event may be determined and added to the chronology. Timelines may be compared to other data sets, including other timelines, other event lists, and other relevant data.

Abstract: According to one method, the method occurs at a data file analyzer. The method includes identifying at least one document identifier associated with a first document in a portable document format (PDF) file. The method further includes determining, using the at least one document identifier, a reference point identifier for identifying a reference point in the first document, an offset value for indicating a location of a first detection area in the first document, and size information for indicating a size of the first detection area in the first document. The method also includes identifying, using a reference point identifier, the reference point in the first document. The method further includes identifying, using the offset value and the size information, the first detection area in the first document and extracting, by processing binary data of the PDF file, data within the first detection area of the first document.

Abstract: Methods and systems are provided for controlling attitude of a vehicle using a reaction wheel onboard the vehicle. One exemplary method involves receiving a torque command for adjusting the attitude of the vehicle using the reaction wheel, determining a phase error of the reaction wheel based at least in part on the torque command, and determining a motor torque command for the reaction wheel based on the phase error. The motor torque command is provided to an electric motor of the reaction wheel to apply a corresponding torque to the rotor of the reaction wheel. The relationship between the magnitude of the motor torque command and the magnitude of the phase error is nonlinear. In exemplary embodiments, the magnitude of the motor torque command exceeds the stiction torque, at least instantaneously, when the reaction wheel has fallen behind an expected position by more than a threshold amount.

Abstract: The disclosed embodiments include methods and systems for providing a real-time application programming interface for merchant enrollment and underwriting. In one embodiment, a process is disclosed that may include receiving, from a first computing device, a request for applying for the merchant financial account for a merchant applicant. The request may also include verifying the information associated with the merchant applicant and providing, via the first computing device, at least one question with a plurality of answer choices to the merchant applicant if the merchant applicant information associated with the applicant is verified. In one aspect, the method may include receiving an answer choice to the at least one question from the merchant applicant via the first computing device and validating the received answer choice. If the answer choice is validated, the method may include activating the first computing device and authenticating the merchant applicant for the merchant financial account.

Abstract: Systems and methods are described for emulating proximity operations of a spacecraft. In one embodiment, a method includes: projecting an image of a first spacecraft on a surface and initiating a proximity operation between the first spacecraft and a second spacecraft. The method further includes evaluating sensor feedback from the second spacecraft based on the proximity operation.

Abstract: A studio tool for working stock includes an upper housing, a lower housing, a viewfinder, a viewfinder cover, an alignment tool, and a pressure column. The upper housing and the lower housing are slidably connected so as to at least partially contain the alignment tool and pressure column. A main spring and lower springs may be used to bias the column blade.

Abstract: Methods and systems are provided for reducing angular velocity of a vehicle using a gyroscope array. A method comprises dithering a gyroscope of the gyroscope array, obtaining current through a gimbal motor of the gyroscope while dithering the gyroscope, determining a gimbal rate command to reduce angular velocity of the vehicle based on the current through the gimbal motor obtained while dithering the gyroscope, and operating the gimbal motor of the gyroscope based on the gimbal rate command.

Abstract: Methods and systems are provided for controlling attitude of a vehicle using a reaction wheel onboard the vehicle. One exemplary method involves receiving a torque command for adjusting the attitude of the vehicle using the reaction wheel, determining a phase error of the reaction wheel based at least in part on the torque command, and determining a motor torque command for the reaction wheel based on the phase error. The motor torque command is provided to an electric motor of the reaction wheel to apply a corresponding torque to the rotor of the reaction wheel. The relationship between the magnitude of the motor torque command and the magnitude of the phase error is nonlinear. In exemplary embodiments, the magnitude of the motor torque command exceeds the stiction torque, at least instantaneously, when the reaction wheel has fallen behind an expected position by more than a threshold amount.

Abstract: Methods and systems are provided for orienting an agile vehicle using a control moment gyroscope array. A method comprises obtaining initial vehicle parameters for the vehicle and obtaining target vehicle parameters for the vehicle. The method further comprises determining command parameters based on a difference between the target vehicle parameters and the initial vehicle parameters, and simulating operation of the control moment gyroscope array using the command parameters and a torque value being at least equal to a maximum achievable torque for the control moment gyroscope array. When the simulated vehicle parameters are substantially equal to the target vehicle parameters, the method further comprises determining a torque profile for the control moment gyroscope array based on the simulated operation and operating the control moment gyroscope array using the torque profile.

Abstract: Methods and systems are provided for reducing angular velocity of a vehicle using a gyroscope array. A method comprises dithering a gyroscope of the gyroscope array, obtaining current through a gimbal motor of the gyroscope while dithering the gyroscope, determining a gimbal rate command to reduce angular velocity of the vehicle based on the current through the gimbal motor obtained while dithering the gyroscope, and operating the gimbal motor of the gyroscope based on the gimbal rate command.

Abstract: Methods and systems are provided for reorienting an agile vehicle, such as a satellite or spacecraft, using a control moment gyroscope (CMG) array. The CMG array comprises a plurality of CMGs onboard the agile vehicle. A method comprises obtaining an input torque command for reorienting the vehicle using the CMG array and, when the angular momentum of the CMG array violates or is approaching a momentum boundary criterion, decreasing the input torque command in the kinetic momentum direction, resulting in a modified torque command, and operating the CMG array using the modified torque command.

Abstract: A studio tool for working stock includes an upper housing, a lower housing, a viewfinder, a viewfinder cover, an alignment tool, and a pressure column. The upper housing and the lower housing are slidably connected so as to at least partially contain the alignment tool and pressure column. A main spring and lower springs may be used to bias the column blade.