Abstract: A ratiometric temperature measurement system includes a sensing circuit to measure a temperature and a controller to determine a resistance corresponding to the sensing circuit. The sensing circuit includes a temperature sensing circuit and a current sensor. The sensing circuit utilize an electrical current to output a first voltage indicative of a first voltage differential across the temperature sensing circuit and to output a second voltage indicative of a second voltage differential across the current sensor. The controller is configured to determine a resistance corresponding to the temperature sensing circuit based at least in part on the first and second voltage differentials. The controller determines a temperature value indicative of the measured temperature based on the resistance.

Abstract: A position sensing system includes a linear variable differential transformer (LVDT) to provide a first output voltage and a second output voltage. The position sensing system also includes two precision rectifiers. Each of the precision rectifiers comprises only operational amplifiers and resistors and obtains the first output voltage or the second output voltage as an input and to provide a full-wave rectified output.

Abstract: A media pack includes a filtration sheet and a support sheet engaged with the filtration sheet. The support sheet includes a first perforated sheet and a first media sheet, the first perforated sheet and the first media sheet being corrugated. The filtration sheet and the support sheet are wound together in a substantially spiral shape. The filtration sheet and the support sheet together form a plurality of channels that are alternatively sealed on opposing ends of the media pack.

Abstract: In accordance with at least one aspect of this disclosure, an engine (e.g., an aircraft turbine engine) can include a turbine mounted to a turbine shaft to rotate the turbine. A starter system can include a starter circuit, for example for powering the starter system to start the engine. More specifically, the starter circuit can be configured to provide power to an electric machine (e.g., an electric motor capable of also acting as a generator) coupled to the turbine shaft to drive the engine.

Abstract: A ratiometric temperature measurement system includes a sensing circuit to measure a temperature and a controller to determine a resistance corresponding to the sensing circuit. The sensing circuit includes a temperature sensing circuit and a current sensor. The sensing circuit utilize an electrical current to output a first voltage indicative of a first voltage differential across the temperature sensing circuit and to output a second voltage indicative of a second voltage differential across the current sensor. The controller is configured to determine a resistance corresponding to the temperature sensing circuit based at least in part on the first and second voltage differentials. The controller determines a temperature value indicative of the measured temperature based on the resistance.

Abstract: Embodiments include systems for regulating windings in a power supply. Aspects include a transformer comprising a first primary winding and a first secondary winding, a DC to DC converter, a saturable reactor coupled to an output of the first secondary winding and an input to the DC to DC converter, and a controlled current source coupled to a node between the saturable reactor and the input of the DC to DC converter, wherein the controlled current source is configured to provide a current rate based on an output voltage of the DC to DC converter, wherein a first filter inductor of the DC to DC converter is magnetically coupled to a second filter inductor of a second DC to DC converter.

Abstract: Systems and methods are disclosed that include generating reservoir property profiles corresponding to reservoir properties for pseudo wells based on reservoir data, generating seismic attributes for the pseudo wells, and training a machine learning model by comparing the reservoir property profiles against the seismic attributes. In this manner, the machine learning model may be used to predict reservoir properties for use with seismic exploration above a region of a subsurface that contains structural or stratigraphic features conducive to a presence, migration, or accumulation of hydrocarbons.

Abstract: There is disclosed in one example a computing apparatus, including: a processor and a memory; and instructions encoded within the memory to instruct the processor to provide a security agent to: identify a malicious process; construct a genealogical process tree of the malicious process, the genealogical process tree including both vertical direct inheritance and horizontal indirect inheritance relationships; and terminate the malicious process and at least some related processes in the genealogical process tree.

Abstract: A cascaded converter system can include a first boost circuit configured to output a first voltage that is higher than an input voltage, and a second boost circuit configured to output a second voltage that is higher than the first voltage. The system can include an intermediate capacitor disposed in parallel between the first boost circuit and the second boost circuit. The system can include a controller configured to control the first and second boost circuit to reduce an RMS current to the intermediate capacitor and/or an area under an intermediate capacitor current plot.

Abstract: Embodiments include systems for regulating windings in a power supply. Aspects include a transformer comprising a first primary winding and a first secondary winding, a DC to DC converter, a saturable reactor coupled to an output of the first secondary winding and an input to the DC to DC converter, and a controlled current source coupled to a node between the saturable reactor and the input of the DC to DC converter, wherein the controlled current source is configured to provide a current rate based on an output voltage of the DC to DC converter, wherein a first filter inductor of the DC to DC converter is magnetically coupled to a second filter inductor of a second DC to DC converter.

Abstract: The present invention includes method and device for label-free holographic screening and enumeration of tumor cells in bulk flow comprising: a laser source, a micro-objective, a pinhole device and a collimating lens, a mirror, a sample chamber with a sample flow inlet on a first side of the sample chamber and a sample flow outlet connected by a microchannel, and a detector, wherein the collimated laser beam passes through microchannel and interacts with cells in the sample to generate a respective hologram at the detector, wherein a processor calculates a numerical reconstruction from the respective hologram and generates a focused image of the numerous cells using the numerical reconstruction, wherein the numerous cells are enumerated by looking at a size, a maximum intensity and a mean intensity of the focused image.

Abstract: An aircraft power system includes a front-end power converter and a back-end power converter. The front-end power converter is configured to generate a first direct current (DC) supply voltage or a second DC supply voltage based on a voltage level of an alternating current (AC) supply voltage output from an AC voltage source. The backend power converter sub-system is configured to convert the first DC supply voltage or the second DC supply voltage into a backend supply voltage. An active power distribution system is configured to select different electrical paths between the front-end converter and the backend converter subsystem in response to detecting output of the first DC supply voltage and the second DC supply voltage.

Abstract: There is disclosed in one example a computing apparatus, including: a processor and a memory; and instructions encoded within the memory to instruct the processor to provide a security agent to: identify a malicious process; construct a genealogical process tree of the malicious process, the genealogical process tree including both vertical direct inheritance and horizontal indirect inheritance relationships; and terminate the malicious process and at least some related processes in the genealogical process tree.

Abstract: A method and system for controlling a three-phase drive connected to a three phase power source. The method includes connecting a converter to transfer power from the power source to a first direct current (DC) bus, where the converter and the first DC bus each have a neutral common point (NCP). Connecting a second DC bus to the first DC bus and configuring an inverter connected to the second DC bus to draw power from the second DC bus to provide a plurality of motor signals, the inverter having an inverter NCP. The method also includes connecting a neutral point selection device to the first DC bus NCP and selectively connecting to the converter NCP or the inverter NCP, the bus selection device configured to disconnect the converter NCP or the inverter NCP from the first DC bus NCP under selected conditions.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit a request for system information based at least in part on a threshold; and receive the system information based at least in part on the request. A base station may receive a request for system information, wherein the request is based at least in part on a threshold; and transmit the system information to a user equipment (UE) associated with the request based at least in part on the request. Numerous other aspects are provided.

Abstract: The present invention includes method and device for label-free holographic screening and enumeration of tumor cells in blood for use in connection with cancer treatments and monitoring.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit a request for system information based at least in part on a threshold; and receive the system information based at least in part on the request. A base station may receive a request for system information, wherein the request is based at least in part on a threshold; and transmit the system information to a user equipment (UE) associated with the request based at least in part on the request. Numerous other aspects are provided.

Abstract: Systems and methods are disclosed that include generating reservoir property profiles corresponding to reservoir properties for pseudo wells based on reservoir data, generating seismic attributes for the pseudo wells, and training a machine learning model by comparing the reservoir property profiles against the seismic attributes. In this manner, the machine learning model may be used to predict reservoir properties for use with seismic exploration above a region of a subsurface that contains structural or stratigraphic features conducive to a presence, migration, or accumulation of hydrocarbons.

Abstract: An aircraft power system includes a front-end power converter and a back-end power converter. The front-end power converter is configured to generate a first direct current (DC) supply voltage or a second DC supply voltage based on a voltage level of an alternating current (AC) supply voltage output from an AC voltage source. The backend power converter sub-system is configured to convert the first DC supply voltage or the second DC supply voltage into a backend supply voltage. An active power distribution system is configured to select different electrical paths between the front-end converter and the backend converter subsystem in response to detecting output of the first DC supply voltage and the second DC supply voltage.

Abstract: A method and system for controlling a three-phase drive connected to a three phase power source. The method includes connecting a converter to transfer power from the power source to a first direct current (DC) bus, where the converter and the first DC bus each have a neutral common point (NCP). Connecting a second DC bus to the first DC bus and configuring an inverter connected to the second DC bus to draw power from the second DC bus to provide a plurality of motor signals, the inverter having an inverter NCP. The method also includes connecting a neutral point selection device to the first DC bus NCP and selectively connecting to the converter NCP or the inverter NCP, the bus selection device configured to disconnect the converter NCP or the inverter NCP from the first DC bus NCP under selected conditions.