Abstract: A mattress cover includes a first, face layer, a second, back layer, and third, inlay layer between the face layer and the back layer. The inlay layer is composed of a flame-retardant material. The face layer is attached to the back layer. The inlay layer is not attached to the face layer and the back layer.

Abstract: A mattress cover includes a plurality of fire-retardant fibers and a plurality of non-fire-retardant fibers. The plurality of fire-retardant fibers has a first color. The plurality of non-fire-retardant fibers has a second color. The first color is different from the second color.

Abstract: Systems and methods for operating a wireless network using rate-based packet windowing with implicit synchronization. One example method includes assigning a packet sequence number to each of a first plurality of data packets based on a time synchronization for a data link layer for a network context. The method further includes transmitting, via a transceiver, the first plurality of data packets for the network context during a rate-based packet window at or below a maximum packet transmission rate based on a time period and the rate-based packet window.

Abstract: A system may include a processor, a night vision sensor, and an objective lens assembly comprising four lenses. Each of a first lens, a second lens, a third lens, and a fourth lens may be configured to project a real world scene onto one of four portions of the night vision sensor. The night vision sensor may be configured to provide four images of the real world scene from the objective lens assembly to the processor. The processor may be configured to: receive a first image, a second image, a third image, and a fourth image from the night vision sensor; generate color night vision image data based at least on the first image, the second image, the third image, and the fourth image; and output the color night vision image data.

Abstract: A system includes a head-up display (HUD) system including a display; a combiner; and at least one processor communicatively coupled to at least one image sensor of at least one tracking system and to the display. The at least one processor configured to: receive image data from one or more of the at least one image sensor, wherein the image data is (i) for performing eye tracking and/or head tracking operations and (ii) for monitoring the displayed images; and detect the at least one malfunction of the HUD system.

Abstract: An optical device includes an electrochromic layer including a single electrochromic region and electronic drivers. The optical device includes a controller for controlling the electronic drivers to change the light transmission of the electrochromic region by applying different voltages to electrodes contacting the electrochromic region. The optical device includes a light intensity sensor for detecting light intensity of regions of a two-dimensional scene, the regions of the scene corresponding to regions of the electrochromic region. The electronic drivers are caused by the controller to apply different voltages to the electrodes to set the light transmission of the regions of the electrochromic region based on detected light intensity of the regions of the scene.

Abstract: A facility for procuring and analyzing information about an anatomical surface feature from a caregiver that is usable to generate an assessment of the surface feature is described. The facility displays information about the surface feature used in the assessment of the surface feature. The facility obtains user input and/or data generated by an image capture device to assess the surface feature or update an existing assessment of the surface feature.

Abstract: Systems and methods for operating a wireless network using rolling window repetition. One example wireless base station includes an electronic processor and a transceiver coupled to the electronic processor. The electronic processor is configured to, for each of a plurality of sets of information, determine a relevancy period. The electronic processor is configured to, for a first broadcast time, generate a broadcast packet that includes sets of information selected from the plurality of sets of information based on the relevancy periods. The electronic processor is configured to transmit, via the transceiver, the broadcast packet.

Abstract: The system may include at least one a light emitter configured to emit light over a range of wavelengths onto an environment and at least one sensor assembly. The range of wavelengths emitted by the light emitter may be of wavelengths that are above or below wavelengths used by a night vision imaging system. The sensor assembly may include an image sensor and conversion layer. The image sensor may capture images of the environment illuminated by the light emitters and sense light in a given range of wavelengths. The conversion layer may receive the emitted light and convert the emitted light to converted light with a wavelength within the given range of wavelengths associated with the image sensor. The image sensor may be further configured to receive the converted light from the conversion layer, capture an image of the light emitter and output image data associated with the captured image.

Abstract: A mattress incudes a core and an encasement sized and shaped to receive the core. The encasement includes a first end, a second end, a first side, a second side, an upper portion, a lower portion, an interior portion, an opening at the first end and in communication with the interior portion, and a flap at the first end. The flap is moveable from an open position, in which the flap is outside of the opening, and a closed position, in which the flap is within the opening. The flap overlays at least a portion of the core when the flap is in its closed position.

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: 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: An electric machine comprising: a stator assembly; a rotor assembly; and a support body. The rotor assembly comprises a shaft to which is mounted a first bearing and a second bearing either side of a permanent magnet, and the support body comprises first and second bearing seats to which the bearings of the rotor assembly are mounted, wherein the first bearing is mounted to the first bearing seat by adhesive, and the second bearing is soft-mounted to the second bearing seat by an o-ring.

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 mattress cover includes a first, face layer, a second, back layer, and third, inlay layer between the face layer and the back layer. The inlay layer is composed of a flame-retardant material. The face layer is attached to the back layer. The inlay layer is not attached to the face layer and the back layer.

Abstract: A mattress cover includes a first, face layer, a second, back layer, and third, inlay layer between the face layer and the back layer. The inlay layer is composed of a flame-retardant material. The face layer is attached to the back layer. The inlay layer is not attached to the face layer and the back layer.

Abstract: A visor for a helmet is disclosed. The visor includes a first lens member, which includes a first transparent shield configured with a photochromic layer. The photochromic layer is configured to adjust a first transmission state of a first viewing area of the first lens member based on the transmission of ambient light through the first viewing area. The visor also includes a second lens member that includes an electrochromic layer. The electrochromic layer is configured to adjust the transmission of ambient light through a second viewing area upon an application of a voltage to the electrochromic layer. The visor also includes a controller configured to adjust a voltage applied to the electrochromic layer, and an attachment element coupled to the first lens member configured to attach to a headgear.

Abstract: A system includes a vibration detector to detect a location of vibration and identify a frequency of the vibration. The system also includes a controller to generate audio corresponding to the frequency of vibration detected by the vibration detector and one or more speakers configured to provide the audio as directional sound.

Abstract: A facility for procuring and analyzing information about an anatomical surface feature from a caregiver that is usable to generate an assessment of the surface feature is described. The facility displays information about the surface feature used in the assessment of the surface feature. The facility obtains user input and/or data generated by an image capture device to assess the surface feature or update an existing assessment of the surface feature.

Abstract: A helmet assembly for a spacesuit or other protective suit is disclosed. In embodiments, the helmet assembly includes an external face shield attachable to the spacesuit and providing the spacesuit user with a forward field of view. The helmet assembly includes suit status displays hard-mounted to the external face shield at a periphery or edge of the forward field of view (e.g., upper, lower, left, right). Each suit status display includes a linear or one-dimensional array of individual light emitting diodes (LED) in communication with a suit controller of the spacesuit. Each LED array receives from the suit controller suit status data (e.g., consumables levels, suit performance, position data) communicated to the user by illuminating one or more of the individual LED units.