Abstract: A curtain is suitable for use in a hospital, patient facilities or surgical setting. The curtain is slideably attached along a ceiling track. A top edge of the curtain may be attached to the ceiling track by a number of pulleys each of which may be utilized to lower the top edge of curtain to a height which is conveniently accessible to someone standing on the floor of the room to remove and/or replace the curtain. In some embodiments of this invention, the curtain has a top portion joined to a bottom portion by a zipper. The pulleys lower the curtain for someone to easily access the zipper to remove, replace and/or attach the bottom portion from/to the top portion. In other embodiments, the pulleys lower the entire curtain for removal and replacement.

Abstract: A three-dimensional geometry is received, and sliced into layers. A first anisotropic fill tool path for controlling a three dimensional printer to deposit a substantially anisotropic fill material is generated defining at least part of an interior of a first layer. A second anisotropic fill tool path for controlling a three dimensional printer to deposit the substantially anisotropic fill material defines at least part of an interior of a second layer. A generated isotropic fill material tool path defines at least part of a perimeter and at least part of an interior of a third layer intervening between the first and second layers.

Abstract: The present disclosure provides methods and compositions for strengthening paper. The methods may include a step of spraying an anionic polymer onto a paper sheet to increase the strength of the paper sheet. The anionic polymer may have amino groups, amide groups, or a combination of amino groups and amide groups. These groups may be functionalized with an aldehyde. Methods may also include a step of adding a wet end composition to a wet end of the papermaking process.

Abstract: A method for converting voltage is disclosed, including implementing a first DC-DC converter in a power management unit; implementing a second DC-DC converter in the power management unit; implementing a controller communicatively coupled to a first output line of the first DC-DC converter and communicatively coupled to a second output line of the second DC-DC converter; coupling the power management unit to a supply voltage; and providing one or more output voltages on the first output line and the second output line.

Abstract: A vehicle includes a suspension system for providing configurable stiffness and damping. The system includes a plurality of hydraulic cylinders, each corresponding to a respective wheel of the vehicle, and one or more valve assemblies for controlling hydraulic fluid in the plurality of hydraulic cylinders to achieve a plurality of suspension modes affecting bounce, pitch, roll, and warp. The system also includes a plurality of accumulators acting as spring elements for storing and releasing the hydraulic fluid as the plurality of hydraulic cylinders compress and rebound. The system includes control circuitry for controlling the valve assemblies to achieve one or more suspension modes defining bounce, pitch, roll, and warp stiffnesses. By generating control signals for the valve assemblies, various interconnections or fluid paths can be achieved, corresponding to the suspension modes. The hydraulic cylinders are double acting, with rebound and compression volumes, and may be coupled to damping valves.

Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.

Abstract: According to some implementations, a radio-frequency (RF) device includes a communication interface coupled to a serial bus. The RF device also includes a monitoring component coupled to the communication interface, the monitoring component configured to monitor the serial bus for first data transmitted to a first device coupled to the serial bus and configure the RF device based on the first data.

Abstract: A 3D printing apparatus and method confirms that one or more print parameters was satisfied in the printing of a 3D object. Sensor readings are obtained during the printing of the 3D object. Based on sensor data corresponding to the sensor readings, a confirmation is made as to whether the one or more print parameters was satisfied in the printing of the 3D object.

Abstract: Systems and methods for a tunable impedance are provided. A tunable impedance includes a transistor assembly having two terminals and a control input. The transistor assembly includes one or more transistors electrically connected between the two terminals to provide a first impedance between the two terminals, based upon a control signal. One or more replica transistors react to the control signal in a similar fashion as the transistor assembly, to provide a replica impedance based upon the control signal. A control circuit is configured to generate the control signal based upon a voltage across the replica transistor(s) and/or a current through the replica transistor(s).

Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.

Abstract: A multi-view (MV) display panel includes a flat panel display (FPD) having FPD pixels, and lenses configured to image the FPD. Each of the FPD pixels, when imaged through one of the lenses, forms a beamlet that is emitted in a direction unique from other beamlets formed by other FPD pixels through the lens. The lens and the FPD pixels which, when imaged through the lens, form beamlets emitted in different directions collectively configure an MV pixel. Each of the FPD pixels includes multiple sub-pixels. The MV display panel also includes a diffuser arranged between the FPD and the lenses, and a light block configured to isolate a diffusion of the multiple sub-pixels of each FPD pixel from its neighboring FPD pixels. The FPD may be backlit using custom lighting and optics. Lens elements may be staggered in a manner that facilitates assembly of the lenses.

Abstract: In one embodiment, a method includes receiving, by a WebAuthn proxy, login prompt information from a browser. The WebAuthn proxy and the browser are installed on a device. The method also includes generating, by the WebAuthn proxy, a WebAuthn credential request based on the login prompt information and communicating, by the WebAuthn proxy, the WebAuthn credential request to a WebAuthn authenticator. The method further includes receiving, by the WebAuthn proxy, a WebAuthn response from the WebAuthn authenticator and communicating, by the WebAuthn proxy, the WebAuthn response to the browser.

Abstract: A curtain is suitable for use in a hospital or patient facilities or in surgical settings. The curtain includes a bottom panel removably attached and suspended from a top panel. The top panel may be suspended from a rail by suspension means such as hooks or rings. The top panel may be a mesh so as to allow air, light, and/or water to pass through. The bottom panel may be opaque to provide privacy. The bottom panel may be single-use or disposable, or may be reusable. The top and bottom panels are joined by a zipper to allow for removal of the bottom panel for washing or replacement. The zipper track has curved portions to allow for easier access to begin the zipping and unzipping process. The curved portions orient the zipper out of the plane of the curtain to allow for easier movement of zipper through the curved portions.

Abstract: A curtain is suitable for use in hospital, patient facilities or surgical settings. The curtain includes a bottom panel removably attached and suspended from a top panel. The top panel maybe suspended from a rail or similar mechanism by suspension means such as hooks or rings. The top panel may comprise a mesh or mesh-like fabric or substance so as to allow air, light, and/or water to pass through. The bottom panel maybe opaque to provide privacy, and maybe flame resistant and/or antibacterial. The bottom panel maybe single-use or disposable, or maybe reusable. The top and bottom panels are joined by a zipper to allow for removal of the bottom panel for washing or replacement. The zipper track has curved portions to allow for easier access to begin the zipping and unzipping process.

Abstract: A 3D printing apparatus and method corrects for skew in the motion components of the apparatus without the use of an independent reference object. A calibration object having features therein or thereon is printed. A user rotates the calibration object by a certain angle after it is printed. The features in/on the calibration object are measured, and an amount of skew is determined based on the measurements. In addition, a 3D printing operation is compensated based on the effects of a coefficient of thermal expansion and/or moisture absorption on dimensional changes.

Abstract: Dispensers are capable of being used in one orientation for dispensing paper towels upwardly when situated on a countertop and also in a second orientation for dispensing paper towels downwardly when mounted on a wall or other surface. Moreover, the dispensers can be easily modified to present a different finish by installing the desired outer shell components on the dispenser. The dispenser utilizes an inner cartridge adapted to house a stack of interleaved paper towels. The paper towels are urged by a spring toward a dispensing slot situated on a housing surrounding the cartridge. The spring urges the leading paper towel in the stack toward the dispensing slot in either orientation for convenient access to the towel by a user.

Abstract: A power amplification system comprises a current source configured to provide a bias current, a current mirror configured to mirror the bias current, and a comparator configured to compare the mirrored bias current to a threshold current and, in response to the mirrored bias current exceeding the threshold current, cause a reduction of output power.

Abstract: According to an embodiment, a system comprises one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations. The operations comprise determining that an endpoint device has requested to discover a location of a protected resource that is protected by a gateway, determining whether the endpoint device has provided a token that is valid, and permitting the endpoint device to discover the location of the protected resource based on determining that the endpoint device has provided the token that is valid. The token indicates that the endpoint device successfully completed a first multi-factor authentication procedure in connection with accessing an authentication enforcement resource.

Abstract: The present disclosure relates to devices and methods for detecting and preventing occurrence of a saturation state in a power amplifier. A power amplifier module can include a power amplifier including a cascode transistor pair. The cascode transistor pair can include a first transistor and a second transistor. The power amplifier module can include a current comparator configured to compare a first base current of the first transistor and a second base current of the second transistor to obtain a comparison value. The power amplifier module can include a saturation controller configured to supply a reference signal to an impedance matching network based on the comparison value. The impedance matching network can be configured to modify a load impedance of a load line in electrical communication with the power amplifier based at least in part on the reference signal.