Abstract: The video based detection of pulse waveform includes systems, devices, methods, and computer-readable instructions for capturing a video stream including a sequence of frames, processing each frame of the video stream to spatially locate a region of interest, cropping each frame of the video stream to encapsulate the region of interest, processing the sequence of frames, by a 3-dimensional convolutional neural network, to determine the spatial and temporal dimensions of each frame of the sequence of frames and to produce a pulse waveform point for each frame of the sequence of frames, and generating a time series of pulse waveform points to generate the pulse waveform of the subject for the sequence of frames.

Abstract: Embodiments described herein relate to various structures, integrated assemblies, and memory devices. In some embodiments, a memory device includes a memory block region having a pillar structure, a first word line structure that extends away from the pillar structure along a first level, a second word line structure that extends away from the pillar structure along a second level, and a dielectric gas region along a third level that is between facing surfaces of the first word line structure and the second word line structure. The memory device includes a periphery region proximate the memory block region. The periphery region includes a tiered structure that includes a first nitride layer formed along the first level, a second nitride layer formed along the second level, and a semiconductor layer formed along the third level.

Abstract: The disclosure introduces systems, devices, methods, and instructions for autonomously identifying recurring patterns (e.g., pulse, respiration) in video content using unsupervised learning. The embodiments overcome the limitations of traditional supervised methods that require extensive labeled datasets, particularly for detecting subtle periodic signals like heart rate and respiration. The disclosure utilizes feature extraction, clustering algorithms, and validation to analyze video data for these temporal patterns, offering potential applications in various fields such as border or gate security, deception detection, healthcare, and entertainment without the need for manual annotation.

Abstract: The video based detection of pulse waveform includes systems, devices, methods, and computer-readable instructions for capturing a video stream including a sequence of frames, processing each frame of the video stream to spatially locate a region of interest, cropping each frame of the video stream to encapsulate the region of interest, processing the sequence of frames, by a 3-dimensional convolutional neural network, to determine the spatial and temporal dimensions of each frame of the sequence of frames and to produce a pulse waveform point for each frame of the sequence of frames, and generating a time series of pulse waveform points to generate the pulse waveform of the subject for the sequence of frames.

Abstract: Systems, devices, methods, and non-transitory computer-readable instructions for determining a physiological signal from a video stream, comprising capturing the video stream of a subject, the video stream including a sequence of frames, processing each frame of the video stream to identify a facial portion of the subject in each frame, determining a periodic physiological signal of the subject from the video stream using a plurality of datasets in which one or more augmentations were applied to the plurality of datasets.

Abstract: Liveness detection includes systems, devices, methods, and non-transitory instructions for detecting liveness of a subject from a media stream, including capturing a media stream of the subject, the media stream including a sequence of frames, processing each frame of the media stream to track one or more biometrics, and determining whether the subject in the media stream is live based on the one or more biometrics detected in the media steam.

Abstract: A fluid level sensor for sensing a level of a fluid within a toroid-shaped tank includes a float ring, a float structure, a gauge shaft, and a tiller arm. The float ring rotate s within the toroid-shaped tank about a first rotational axis. The float structure exhibits buoyancy in the fluid disposed within the toroid-shaped tank and supplies a force to the float ring based on the level of the fluid within the toroid-shaped tank. The gauge shaft is mounted for rotation about a second rotational axis and rotates about the second rotational axis to a position representative of the level of the fluid within the toroid-shaped tank. The tiller arm supplies the rotational drive force to the gauge shaft when the float ring rotates.

Abstract: A fluid level sensor for sensing a level of a fluid within a toroid-shaped tank includes a float ring, a float structure, a gauge shaft, and a tiller arm. The float ring rotate s within the toroid-shaped tank about a first rotational axis. The float structure exhibits buoyancy in the fluid disposed within the toroid-shaped tank and supplies a force to the float ring based on the level of the fluid within the toroid-shaped tank. The gauge shaft is mounted for rotation about a second rotational axis and rotates about the second rotational axis to a position representative of the level of the fluid within the toroid-shaped tank. The tiller arm supplies the rotational drive force to the gauge shaft when the float ring rotates.

Abstract: Systems, devices, methods, and non-transitory computer-readable instructions for non-contrastive unsupervised learning of a physiological signal from a video stream, the computer-implemented method including capturing the video stream of a subject, the video stream including a sequence of frames; processing each frame of the video stream to update a physiological signal detection function; determining the physiological signal from the video stream, and applying the updated physiological signal detection function to a subsequent video steam.

Abstract: A physical vapor transport growth system includes a growth chamber charged with SiC source material and a SiC seed crystal in spaced relation and an envelope that is at least partially gas-permeable disposed in the growth chamber. The envelope separates the growth chamber into a source compartment that includes the SiC source material and a crystallization compartment that includes the SiC seed crystal. The envelope is formed of a material that is reactive to vapor generated during sublimation growth of a SiC single crystal on the SiC seed crystal in the crystallization compartment to produce C-bearing vapor that acts as an additional source of C during the growth of the SiC single crystal on the SiC seed crystal.

Abstract: Systems, devices, methods, and non-transitory computer-readable instructions for detecting deception of a subject from a media stream that capture a media stream of the subject including, the media stream including a sequence of frames, process each frame of the media stream to track a plurality of biometrics, and determine whether the subject in the media stream is deceptive based upon changes to respective biometrics.

Abstract: The video based detection of pulse waveform includes systems, devices, methods, and computer-readable instructions for capturing a video stream including a sequence of frames, processing each frame of the video stream to spatially locate a region of interest, cropping each frame of the video stream to encapsulate the region of interest, processing the sequence of frames, by a 3-dimensional convolutional neural network, to determine the spatial and temporal dimensions of each frame of the sequence of frames and to produce a pulse waveform point for each frame of the sequence of frames, and generating a time series of pulse waveform points to generate the pulse waveform of the subject for the sequence of frames.

Abstract: Methods, systems, and devices supporting a data model for emissions analysis are described. Some database systems may store emissions data and support a sustainability application. The sustainability application may display reports that track and analyze data related to carbon emissions. In some cases, underlying data for a report is missing from the database system. The system may support extrapolation techniques to estimate the missing data and aggregate the underlying data—including the extrapolated values—according to a data schema of the database to calculate fields in a report. In some cases, a single data record may be used to generate multiple reports. The system may send one or more results to a user device for display in a user interface (e.g., in one or more dashboards). Additionally or alternatively, the system can display underlying calculations (e.g., report calculations, extrapolation calculations, etc.) in the user interface to support auditing activities.

Abstract: A physical vapor transport growth system includes a growth chamber charged with SiC source material and a SiC seed crystal in spaced relation and an envelope that is at least partially gas-permeable disposed in the growth chamber. The envelope separates the growth chamber into a source compartment that includes the SiC source material and a crystallization compartment that includes the SiC seed crystal. The envelope is formed of a material that is reactive to vapor generated during sublimation growth of a SiC single crystal on the SiC seed crystal in the crystallization compartment to produce C-bearing vapor that acts as an additional source of C during the growth of the SiC single crystal on the SiC seed crystal.

Abstract: A physical vapor transport growth system includes a growth chamber charged with SiC source material and a SiC seed crystal in spaced relation and an envelope that is at least partially gas-permeable disposed in the growth chamber. The envelope separates the growth chamber into a source compartment that includes the SiC source material and a crystallization compartment that includes the SiC seed crystal. The envelope is formed of a material that is reactive to vapor generated during sublimation growth of a SiC single crystal on the SiC seed crystal in the crystallization compartment to produce C-bearing vapor that acts as an additional source of C during the growth of the SiC single crystal on the SiC seed crystal.

Abstract: Methods, systems, and devices supporting a data model for emissions analysis are described. Some database systems may store emissions data and support a sustainability application. The sustainability application may display reports that track and analyze data related to carbon emissions. In some cases, underlying data for a report is missing from the database system. The system may support extrapolation techniques to estimate the missing data and aggregate the underlying data—including the extrapolated values—according to a data schema of the database to calculate fields in a report. In some cases, a single data record may be used to generate multiple reports. The system may send one or more results to a user device for display in a user interface (e.g., in one or more dashboards). Additionally or alternatively, the system can display underlying calculations (e.g., report calculations, extrapolation calculations, etc.) in the user interface to support auditing activities.

Abstract: A method and apparatus facilitate electronic commerce by allowing items in use at the user's location to act as physical representations of items available for purchase electronically. Thus, the user's location becomes, in effect, a showroom for items available for purchase online for which corresponding physical representations exist and are in use at the user's location.

Abstract: A self-retaining, recessed seal for reception in an open top groove, where the groove is neither configured for seal retention (e.g., convergent side walls), nor provided with seal retention features such as flanges, projections, etc. No adhesives are required, enabling the seal to be easily removed for cleaning, etc. The self-retaining seal has a bottom structure with lateral extensions, wider than the groove, with upwardly angled surfaces at the edges and portions that extend upward when compressed laterally by the walls of the groove. Side walls of the seal extend upward from the bottom structure and are slightly narrower than the groove, to avoid or minimize contact with the groove side walls when the seal is inflated. The configuration enables relatively easy installation of the seal but effectively prevents the seal from “walking” out of the groove over time, with repeated cycles of inflation and deflation.

Abstract: We describe methods of mass-producing full color, 3D holograms, potentially incorporating a personalized image, which are particularly suitable for security purposes. Broadly speaking in embodiments a method generates, electronically, an interlaced image comprising a set of different views of a 3D object from different angles. This is projected onto a diffusing screen using coherent light and mapped from the screen into an angularly encoded object beam using a lenticular array. The different views in the angularly encoded object beam are then recorded simultaneously into holographic film using a reference beam.

Abstract: A self-retaining, recessed seal for reception in an open top groove, where the groove is neither configured for seal retention (e.g., convergent side walls), nor provided with seal retention features such as flanges, projections, etc. No adhesives are required, enabling the seal to be easily removed for cleaning, etc. The self-retaining seal has a bottom structure with lateral extensions, wider than the groove, with upwardly angled surfaces at the edges and portions that extend upward when compressed laterally by the walls of the groove. Side walls of the seal extend upward from the bottom structure and are slightly narrower than the groove, to avoid or minimize contact with the groove side walls when the seal is inflated. The configuration enables relatively easy installation of the seal but effectively prevents the seal from “walking” out of the groove over time, with repeated cycles of inflation and deflation.