Abstract: A heat exchanger of a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a plurality of microchannel tubes, where each microchannel tube of the plurality of microchannel tubes is configured to direct refrigerant therethrough, and a plurality of fin sets, where each fin set of the plurality of fin sets is disposed between corresponding adjacent microchannel tubes of the plurality of microchannel tubes. Additionally, each fin set of the plurality of fin sets includes a respective fin density based on a location of the respective fin set along a height of the heat exchanger.

Abstract: A manifold unit includes a body that defines a first inlet aperture having a first inlet axis; a second inlet aperture having a second inlet axis substantially coincident with the first inlet axis; a first outlet aperture having a first outlet axis substantially perpendicular to the first and second inlet axes; and a second outlet aperture having a second outlet axis substantially perpendicular to the first and second inlet axes. The second outlet axis is substantially coplanar with the first outlet axis.

Abstract: At least one loudspeaker module having a loudspeaker driver mounted inside a headrest behind a lateral non-contact surface of the headrest and is oriented so that a central axis of radiation is along a lateral direction, x, of the headrest. A waveguide has an opening in the lateral direction, x, and an exit opening in a forward direction, y. The forward direction, y, is generally perpendicular to the lateral direction, x. The waveguide is mounted to the loudspeaker driver so that the opening aligns with a radiating surface of the loudspeaker driver and the exit opening extends along the lateral non-contact surface of the headrest exteriorly to the headrest. The opening is vertically oriented on the lateral non-contact surface of the headrest so that a central axis of radiation of the waveguide is directed toward the forward direction, y. The loudspeaker has an acoustic lens above the loudspeaker driver.

Abstract: A robot system for servicing a semiconductor tool includes a cart frame. An arm support frame is fixed to the cart frame and is coupled to a robot arm. An arm frame is connected by hinges to the arm support frame at a first end and to a fixture connect interface at a second end. The fixture connect interface connects to a docking fixture of the semiconductor tool. An arm locking mechanism is attached to the arm support frame for locking the arm frame, when rotated, to an extended position or a folded position. The fixture connect interface connects the cart frame to the semiconductor tool, when the arm frame is locked in the extended position.

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: An example device includes: a communications interface including a beacon; and a controller interconnected with the communications interface, the controller configured to: receive, via the communications interface, an initialization request including a beacon type; in response to the initialization request: obtain configuration data for the beacon type; and format a beacon packet according to the configuration data for the beacon type; and control the beacon to broadcast the beacon packet.

Abstract: Various implementations include systems and approaches for grouping speakers. In some cases, a method includes, configuring a first set of acoustic properties to be applied to an audio device in response to detecting an identifier for a given location; in response to detecting the identifier, automatically applying the first set of acoustic properties to the audio device for audio playback; and in response to no longer detecting the identifier, automatically applying a second set of acoustic properties to the audio device for audio playback, the second set of acoustic properties being different from the first set of acoustic properties in at least one aspect.

Abstract: An application receives a request from a client device for information relating to a non-fungible token. The application determines, based on the request, a set of signals to extract relative to the non-fungible token. The application inputs the set of signals into a supervised machine learning model, and receives, as output from the supervised machine learning mode, a prediction for the non-fungible token. The application outputs, for display on the client device, the information relating to the non-fungible token, the information determined based on the prediction.

Abstract: Systems and methods for multi-item searching for limited-channel interfaces are disclosed. In some embodiments, a disclosed method includes: receiving an input message from a requesting device via a limited-communication channel; identifying, via a first trained natural language model, a plurality of queries in the input message; implementing a plurality of search threads, wherein each of the plurality of search threads is configured to generate search results for a corresponding one of the plurality of queries; generating a responsive message comprising at least a portion of the search results for each of the corresponding one of the plurality of queries; and transmitting the responsive message to the requesting device.

Abstract: Systems and methods for expediting online transactions are disclosed. In some embodiments, a disclosed method includes: obtaining a query submitted by a user; identifying, in the query, at least one predetermined keyword indicating a request for an expedited transaction by the user; determining, based on the query and a transaction history of the user, a product item; generating contract data related to a purchase contract of the product item; and transmitting, as a response to the query, the contract data with an option for the user to select to directly place an order of the product item.

Abstract: A robot system for servicing a semiconductor tool includes a cart frame. An arm support frame is fixed to the cart frame and is coupled to a robot arm. An arm frame is connected by hinges to the arm support frame at a first end and to a fixture connect interface at a second end. The fixture connect interface connects to a docking fixture of the semiconductor tool. An arm locking mechanism is attached to the arm support frame for locking the arm frame, when rotated, to an extended position or a folded position. The fixture connect interface connects the cart frame to the semiconductor tool, when the arm frame is locked in the extended position.

Abstract: A device for clearing obstructions from a medical tube is disclosed. The device includes an enclosure having an interior and an exterior, the enclosure comprising a distal opening for providing access to the interior of the enclosure. The device further includes a spool provided within the enclosure that is rotatable about an axis and an elongated guide member coupled to the spool such that the rotation of the spool causes the elongated guide member to wind or unwind about the spool. The device further includes a drive mechanism that is operable to rotate the spool within the enclosure without compromising a sterile field within the enclosure.

Abstract: An apparatus for installing multiple strands of hose below a surface of terrain can include a chassis, a first module coupled to the chassis, wherein the first module comprises a first trenching blade assembly comprising a first trenching blade configured to dig a first trench along a first trench axis, a first hose guide, and a first trench filler-packer, wherein the first trench filler-packer is configured to dispose soil excavated from the first trench back into the first trench and to pack at least a portion of the soil disposed back into the first trench, and one or more additional modules coupled to the chassis, wherein each of the one or more additional modules is configured to dig an additional trench along an additional trench axis. A lateral spacing between the first trench axis and an additional trench axis can be adjustable.

Abstract: A saw blade includes an elongated body with a working edge extending along a longitudinal axis. A first strip composed of carbide or cermet and including at least one first full cutting tooth is coupled to a first portion of the working edge by a first weld fusion zone composed of a ductile material. The first strip is set in a first direction at a first angle out of a plane of the body by a first bend in the first weld fusion zone. A second strip composed of carbide or cermet and including at least one second full cutting tooth is coupled to a second portion of the working edge by a second weld fusion zone composed of a ductile material. The second strip is set in a second direction, opposite the first direction, at a second angle out of the plane of the body by a second bend in the second weld fusion zone.

Abstract: A hole cutting accessory for a power-driven tool may include an arbor that provides for quick release of an annular saw blade component of the accessory, and for quick release of a pilot drill bit component of the accessory. The quick release of the annular saw blade component from the arbor may be accomplished separately from the quick release of the pilot drill bit component from the arbor.

Abstract: A multi-sensor input device includes multi-color lights to illuminate a user's hand with various colors of light including visible and infrared, as well as sensors including a photodetector, a red-green-blue (RGB) camera, and an infrared camera. During operation, sensor data generated by the sensors may represent non-biometric input such as a barcode that is printed or shown on another device's display, biometric input such as images of surface and subcutaneous features of the user's hand, and so forth. The biometric input may then be processed to identify the user. The input device also includes antitamper features to improve security. The input device may be used at various locations, such as at an entry portal, point of sale, and so forth.