Abstract: Embodiments are directed to a file system that include object stores. An object store for write requests may be provided. Write ahead log (WAL) entries that include data blocks may be generated. A WAL object may be generated based on the WAL entries and stored in the object store. An in-memory overlay may be updated to associate the data blocks with the WAL object. A checkpoint operation may be executed to: generate an index object that includes index entries that associate other data blocks with data objects stored in the object store; update the index object to include index entries that associate the data blocks with the WAL object; store the updated index object in the object store; update the in-memory overlay to remove the association of the data blocks and the WAL object and update the in memory WAL to remove records of successfully checkpointed WAL objects.

Abstract: Embodiments are directed to a file system that include object stores. An object store for write requests may be provided. Write ahead log (WAL) entries that include data blocks may be generated. A WAL object may be generated based on the WAL entries and stored in the object store. An in-memory overlay may be updated to associate the data blocks with the WAL object. A checkpoint operation may be executed to: generate an index object that includes index entries that associate other data blocks with data objects stored in the object store; update the index object to include index entries that associate the data blocks with the WAL object; store the updated index object in the object store; update the in-memory overlay to remove the association of the data blocks and the WAL object and update the in memory WAL to remove records of successfully checkpointed WAL objects.

Abstract: Methods, apparatus, devices, subsystems, and systems for holographically displaying live scenes including one or more three-dimensional (3D) objects are provided. In one aspect, a system includes a holographic capturing system and a holographic display system. The holographic capturing system includes: an optical system configured to generate an optical hologram of a live scene that comprises one or more three-dimensional (3D) objects, and an optical sensor configured to capture sequential optical holograms of the live scene and output sequential hologram data associated with the sequential optical holograms of the live scene, each optical hologram being associated with respective hologram data. The holographic display system is configured to optically reconstruct the live scene in a 3D space based on at least part of the sequential hologram data.

Abstract: In some examples, a system can access video data collected from one or more image sensors, the video data showing a region of interest proximate to a machine. The system can execute an object detection model to detect that a person is within the region of interest proximate to the machine based on the video data. The system can detect a motion status of a component of the machine. The system can execute a pose estimation model on the video data to estimate a pose of the person with respect to the machine. The system can detect a safety rule violation based on the pose of the person with respect to the machine, and the motion status of the machine. The system can transmit a signal to a controller of the machine in response to detecting the safety rule violation.

Abstract: Systems and methods are provided for multi-space vehicle charging. An example system may include a cord management system configured to extend across a plurality of parking spaces and configured to move a charging connector of a cord to at least one selected parking space of the plurality of parking spaces associated with at least one vehicle. The cord may extend from a charging device. An example method may include receiving a request to charge a vehicle located in a parking space of a plurality of parking spaces and/or moving a charging connector of a cord extending from a charging device to the parking space of the vehicle.

Abstract: Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, a system includes: a display having a plurality of display elements and a driving device coupled to the driving device and configured to: obtain a hologram for the display, wherein the hologram comprises, for each display element of the plurality of display elements, a respective sum of electromagnetic (EM) field contributions of a plurality of primitives corresponding to at least one object to the display element; and generate, for each display element of the plurality of display elements, a respective modulation control signal based on the respective sum of EM field contributions of the plurality of primitives to the display element.

Abstract: There is provided a fan assembly comprising a motor-driven impeller arranged to generate an airflow, an air outlet arranged to emit the airflow, at least one filter assembly that is arranged to purify the airflow, a plurality of sensors arranged to measure a value for each of a plurality of air quality characteristic, and a processor. The processor is configured to receive measured values for each of the plurality of air quality characteristics, identify one of a corresponding set of intervals within which the measured value falls, select an air quality index value associated with the identified interval, and generate a corresponding speed value using the selected air quality index value. The processor is then configured to set a speed of the motor-driven impeller in dependence upon the highest of the speed values.

Abstract: There is provided a method of measuring liquid volume in a sealed container of a breast pump of known volume comprising liquid and gas. The method includes a measurement phase, measuring the volume of gas in the container by changing a first parameter of the gas by a known amount. The method also includes measuring a change in a second parameter of the gas; calculating the volume of gas in the container using the measured change and a predetermined operation equation; and determining the volume of liquid in the container based on the calculation.

Abstract: Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, an optical device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device, the light including multiple colors of light; an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device; and a plurality of out-coupling diffractive structures arranged downstream of the in-coupling diffractive structure along the first direction and configured to diffract at least part of the light out of the optical guiding device along a second direction different from the first direction. The optical device can be configured for at least one of: color crosstalk suppression among the multiple colors of light, display zero order light suppression, dispersion compensation, or ambient light blocking.

Abstract: A computer system comprises a plurality of endpoints at which security agents generate security alerts and a machine-learning (ML) system that receives the security alerts from the endpoints and that separates the security alerts into a plurality of clusters, wherein the ML system is configured to execute on a processor of a hardware platform to: determine that a group of first alerts of the security alerts belongs to a first cluster of the clusters; create a first representative alert from metadata of the first alerts belonging to the first cluster; and in response to a security analytics platform evaluating the first representative alert as being harmless to the computer system, store information indicating that all of the first alerts are harmless.

Abstract: An assembly comprising a fuel stringer duct, a bulkhead, and a bulkhead retainer. The bulkhead is positioned in the fuel stringer duct to block the flow of fluid along the fuel stringer duct. The bulkhead retainer comprises a retainer portion that extends through an opening in a wall of the fuel stringer duct and which is configured to abut with the bulkhead to prevent movement of the bulkhead along the fuel stringer duct. Also a method of installing a bulkhead in a fuel stringer duct.

Abstract: A computer system comprises a machine-learning (ML) system at which alerts are received from endpoints, wherein the ML system is configured to: upon receiving a first alert and a second alert, apply an ML model to the first and second alerts; based at least in part on the first alert being determined to belong to a first cluster of the ML system, classify the first alert into one of a plurality of alert groups, wherein alerts classified into a first alert group of the alert groups are assigned a higher priority for security risk evaluation than alerts classified into a second alert group of the alert groups; and based on the second alert being determined to not belong to any cluster of the ML system, analyze a chain of events that triggered the second alert to determine whether there is suspicious activity associated with the second alert.

Abstract: Interfaces for positive pressure therapy having a mask assembly, a headgear assembly and a connection port assembly are disclosed herein. The connection port assembly has a ball joint connection with the mask assembly and includes a quick release button for easily disconnecting the gases source conduit from the mask assembly. The mask assembly may include a bias flow vent that is formed separately and attached to the mask assembly. The headgear assembly encircles the rear region of the user's head and may include at least some portions that are substantially non-stretchable.

Abstract: A connector for connecting a fluid flow duct to a fuel stringer duct. The connector comprises a body having an internal channel for fluid passage between a first opening and a second opening of the body. A flange surrounds the first opening, the flange configured for insertion into a hole formed in a wall of the fuel stringer duct. An outer surface of the flange is provided with a first sealing member that surrounds the flange, the first sealing member configured to form a seal between the outer surface of the flange and an internal surface of the hole formed in the wall of the fuel stringer duct.

Abstract: A support system is provided for a gear case of a rope shovel. The gear case supports a gear drive configured to drive rotation of a hoist drum, and the gear case includes a first end, a second end, and a longitudinal axis extending between the first end and the second end. The support system includes: a coupling for securing the gear case against translational movement relative to a rotating frame, the coupling oriented orthogonally to the longitudinal axis and configured to engage the rotating frame and a portion of the gear case; and a support member configured to be coupled to the rotating frame of the rope shovel and supporting the gear case, the support member permitting translational movement of the gear case relative to the rotating frame to accommodate flexing of the rotating frame.

Abstract: A method includes determining a trajectory of an object based on a mass of the object, and determining a motion of a hand based on the mass of the object and the trajectory of the object. The method can further include generating an animation of the hand interacting with the object based on the trajectory of the object and the motion of the hand.

Abstract: A gas hydrate inhibitor composition is disclosed including two main components: (1) 5-95% of an amphiphilic compound with a hydrophobic tail linked to a hydrophilic head group through various linking structures, and (2) 5-95% of a cationic surfactant based on di(C8-C18 alkyl)dimethyl ammonium salts. The linking structures include amide-based linkers and more complex structures containing hydroxyl groups, carboxylic acid groups, and various combinations. The composition features specific requirements for substituent groups ranging from small alkyl chains to larger hydrocarbyl groups.

Abstract: Disclosed are embodiments of an apparatus, system, and method for performing a sleeve gastrectomy. The apparatus can include a bougie for insertion into an interior of a stomach, the bougie having a proximal bougie end and a distal bougie end, an inflation lumen having a proximal lumen end and a distal lumen end, the inflation lumen extending from the proximal bougie end through the distal bougie end, a fluid delivery system coupled with the proximal lumen end, the fluid delivery system being operably configured to deliver positive pressure in a predetermined positive pressure range into the stomach, and a monitor coupled with the proximal lumen end operably configured for the monitoring of pressure or volume within the stomach. The bougie can be operably configured to define a resection line for the sleeve gastrectomy when the predetermined positive pressure range is achieved within the stomach.

Abstract: A laundry appliance includes a drum that is rotationally operable within a tub and a rotator that is rotationally operable relative to the drum. The rotator includes an impeller that is axially fixed with respect to the drum and includes a receiver, a removable agitator that is selectively coupled with the receiver, and a filtration structure that is disposed at least within the removable agitator.

Abstract: System for endocardial injection are disclosed. An example system may include a first steerable catheter having a first lumen formed therein. A second steerable catheter may be disposed within the first lumen. The second steerable catheter may have a second lumen formed therein. An injection catheter may be disposed within the second lumen. The injection catheter may have a distal end region. The distal end region may include an imaging section and a needle section. The system may include an imaging device configured to be disposed within the imaging section.