Abstract: An optical display system includes a first display, a plurality of electronic drivers, a controller, and a combiner. Light from a scene is combined with image light from the first display, and the combined light presented to an observer. The combiner includes an electrochromic layer comprising one or more electrochromic regions disposed between the scene and the combiner. The electronic drivers are arranged to electrically connect with and drive respective of the electrochromic regions. The controller is configured to control the plurality of electronic drivers to individually address each of the electrochromic regions to selectively drive some of the electrochromic regions to change light transmission of the selectively driven electrochromic regions.

Abstract: A flame-retardant mattress cover, including a back layer; an inlay layer, where the inlay layer has an inherently flame-retardant material; and a face layer, where the back layer is configured to be closer to a mattress core covered by the flame-retardant mattress cover than the inlay layer and the face layer, where the inlay layer is between the back layer and the face layer.

Abstract: An apparatus includes a memory and a processor. The memory stores first and second machine learning algorithms. The processor receives, from a user, voice signals associated with an information request and converts them into text. The processor uses the first machine learning algorithm to determine, based on the text, to automatically generate a reply to the request, rather than transmitting the request to an agent. The processor uses the second machine learning algorithm to generate, based on the set of text, the reply, which it transmits to the user. The processor receives feedback associated with the reply, indicating that the reply does or does not include the requested information. The processor uses the feedback to update either or both machine learning algorithms.

Abstract: A system includes a head wearable display (HWD) device and a processor. The HWD device includes a waveguide display and an image monitor sensor. The waveguide display includes a waveguide and an optical system, the optical system configured to: receive image data corresponding to an image; and project the image at least through the waveguide to be displayed to a user. The image monitor sensor is optically coupled to the waveguide or the optical system. The image monitor sensor is configured to: capture at least a portion of the image as a monitored image; and output monitored image data. The processor is configured to: receive the monitored image data from the image monitor sensor; and based at least on the monitored image data, determine whether the waveguide display displayed the image correctly.

Abstract: An optical system is disclosed. The optical system includes collimating optics, including a polarization beam splitter, which includes one or more polarizations selection reflection surfaces configured to split image light into (s)-polarized light and (p)-polarized light. The collimating optics further include a first mirror configured to receive and reflect (p)-polarized light emitted from the one or more polarization selective reflection surfaces, a second mirror configured to receive and reflect (s)-polarized light emitted from the one or more polarization selective reflection surface, and a corrector lens configured to receive (p)-polarized light reflected from the first mirror and receive (s)-polarized light reflected from the second mirror, wherein a light path of the (s)-polarized light and a light path of the (p)-polarized light are substantially equal, wherein the (p)-polarized light and the (s)-polarized light are configured to combine to form a user image.

Abstract: A utility device within a utility system and including a power source, a communication interface, and one or more electronic processors. The processors are configured to periodically transition from a standby mode into a receive mode and monitor for a broadcast message while in the receive mode. The electronic processors are also configured to receive a broadcast message via the communication module while in the receive mode and analyze a header of the received broadcast message to determine whether any data packets within the received broadcast message is relevant. The data packets within the broadcast message are determined to be relevant based on whether the received broadcast message includes one or more data packets within one or more information regions associated with a device type of the utility device. The electronic processors are also configured to resume operation in the standby mode in response to determining that the received broadcast message is not relevant.

Abstract: A utility device within a utility system and including a power source, a communication interface, and one or more electronic processors. The processors are configured to periodically transition from a standby mode into a receive mode and monitor for a broadcast message while in the receive mode. The electronic processors are also configured to receive a broadcast message via the communication module while in the receive mode and analyze a header of the received broadcast message to determine whether the received broadcast message is relevant. The broadcast message is determined to be relevant based on the received broadcast message including one or more data packets associated with a unique network ID of the utility device as defined in the header. The electronic processors are also configured to resume operation in the standby mode in response to determining that the received broadcast message is not relevant.

Abstract: An optical display system includes a first display, a plurality of electronic drivers, a controller, and a combiner. Light from a scene is combined with image light from the first display, and the combined light presented to an observer. The combiner includes an electrochromic layer comprising one or more electrochromic regions separated from each other. The electronic drivers are arranged to electrically connect with and drive respective of the electrochromic regions. The controller is configured to control the plurality of electronic drivers to individually address each of the electrochromic regions to selectively drive some of the electrochromic regions to change light transmission of the selectively driven electrochromic regions.

Abstract: An apparatus includes a memory and a processor. The memory stores first and second machine learning algorithms. The processor receives, from a user, voice signals associated with an information request and converts them into text. The processor uses the first machine learning algorithm to determine, based on the text, to automatically generate a reply to the request, rather than transmitting the request to an agent. This determination indicates that the text is associated with a probability that the automatically generated reply includes the requested information that is greater than a threshold. The processor uses the second machine learning algorithm to generate, based on the set of text, the reply, which it transmits to the user. The processor receives feedback associated with the reply, indicating that the reply does or does not include the requested information. The processor uses the feedback to update either or both machine learning algorithms.

Abstract: A system includes a vehicle cockpit and a processor. The vehicle cockpit includes imperceptible cockpit reference fiducials and a head wearable display (HWD) device. The imperceptible cockpit reference fiducials are imperceptible to a naked eye of a user in the vehicle cockpit. The HWD device includes a display and an optical sensor configured to: capture images of the imperceptible cockpit reference fiducials; and output optical sensor image data. The processor is configured to: receive the optical sensor image data; and based at least on the optical sensor image data, determine a position and orientation of the head wearable display device. The display is configured to display the images aligned with the field of view of the user based at least on the determined position and the determined orientation of the head wearable display device.

Abstract: A system is disclosed that display configured to transmit a signal that includes a first light configured as a display image and a second light configured as a reference image. The system also includes a beam splitter, a selectively transmissive mirror and a sensor configured to detect the second light. The beam splitter is configured to receive the signal from the display and reflect the signal to the selectively transmissive mirror. The selectively transmissive mirror is configured to receive the reflected signal, transmit the second light toward a sensor, and reflect the first light, wherein the first light is configured with a first bandwidth, wherein the second light is configured with a second bandwidth. The system further includes a corrector lens configured to receive the first light and transmit the first light to an exit pupil.

Abstract: A method to perform continuous-wave NMR measurements of nuclear magnetization at high magnetic fields, above 2.5 T, without analog down-mixing is described. An FPGA controls a digital clock pulse which is used to stimulate a resonant circuit and provide a reference signal. An algorithm determines the real portion of a resonant circuit signal near the Larmor frequency of the species of interest using only two measurements of the waveform per cycle. The FPGA automatically alters a variable capacitance to tune the resonant circuit to the Larmor frequency.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for adaptive educational activities are disclosed. In one aspect, a computer-implemented method includes receiving, by a computing device that is configured to grant a given user access to a first group of activity modules based on a classification of the given user, user data and classification data. The method includes granting the user access to a first activity module and a second activity module, and preventing the user from accessing a third activity module. The method includes receiving interaction data based on the user interacting with the first activity module, and determining that the interaction data indicates an improper classification of the user. Based on the interaction data, the method includes maintaining the classification of the user, granting the user access to a fourth activity module, and preventing the user from accessing the second activity module.

Abstract: A fabric includes a yarn having a core and a sheath. The core is composed of spandex. The sheath includes a plurality of fire-retardant fibers which are spun around the core in a spiral manner. The fabric does not include any glass.

Abstract: Disclosed are isolated single heavy chain variable (VHH) monoclonal antibodies, antigen binding fragments thereof, and bispecific antibodies include these VHH monoclonal antibodies, wherein the VHH monoclonal antibody or antigen binding fragment specifically binds a canine programmed death (PD)-1. Nucleic acid molecules encoding these VHH monoclonal antibodies and antigen binding fragments are also disclosed, as are expression vectors including these nucleic acid molecules and host cells including these expression vectors. Methods of detecting canine PD-1, and methods of increasing cytotoxic T cell activity and treating tumors are also disclosed.

Abstract: A method for identifying and correcting fixed pattern noise includes capturing a focused image and an unfocused image via a variable focus lens. Fixed pattern noise represented in the unfocused image is filtered from the focused image. The unfocused image represents a low-pass filtered component of the focused image; subtracting the unfocused image from the focused image results in a high-pass and fixed pattern noise filtered focused image. Image capture and focus of the variable focus lens are synchronized to remove transitional frames from the image stream.

Abstract: A system and method. The system may include a display, a lens having distortion, an image generator, and a processor. The lens may be configured to focus light received from an environment. The image generator may be configured to receive the light from the lens and output a stream of images as image data, wherein each of the stream of images is distorted. The processor may be configured to: receive the image data from the image generator; detect a point source object in the stream of images of the image data; enhance the point source object in the stream of images of the image data; undistort the stream of images of the image data having an enhanced point source object; and output a stream of undistorted images as undistorted image data to the display.

Abstract: A helmet mounted display is embedded in a visor assembly. The visor assembly comprises two molded sections that define portions for receiving waveguides. The optical components are disposed in a portion of the visor assembly and the entire assembly is attached by a hinge to the helmet. The visor assembly includes lateral clips to secure the visor assembly to the helmet, and a night-vision goggle attachment point.

Abstract: A facemask-mounted augmented reality (AR) display device is disclosed. In embodiments, the display device is hard-mounted to a breathing apparatus (e.g., oxygen mask, smoke mask) fitted to a user's nose and mouth behind a partially or fully covering external face shield. The AR display system includes display surfaces aligned with the eyes of the user and capable of providing the user with a forward field of view that moves with the user's head. The AR display system synthesizes streaming images with additional overlay sources (e.g., mission data, position data) to generate augmented reality content presented to the user within the field of view of the display surfaces.

Abstract: A system and method. The system may include a head-up display (HUD). The HUD may include a positionable combiner optical element (COE) and a combiner alignment detector (CAD) configured to conform images displayed on the positionable COE with a view through the positionable COE. The CAD may include a mirror that moves with the positionable COE, an infrared (IR) emitter configured to emit IR pulses onto the mirror with a duty cycle of less than 1% such that an average time-based radiance of the IR pulses is compatible with a night vision imaging system (NVIS), and an IR detector configured to receive the IR pulses reflected off of the mirror.