Abstract: One or more embodiments include a computer-implemented method that includes receiving a data set generated by a machine learning model, wherein the data set comprises a plurality of data samples that are independent of each other, performing two or more fitting operations to fit the data set to a regularized maximum likelihood estimators (MLEs), determining a variance associated with the data set based on a derivative associated with the regularized MLEs, and performing one or more operations associated with the machine learning model based on the variance.

Abstract: A system for measuring oil circulation ratio in a vapor-compression refrigeration system (VCRS) is provided. The system may include an oil separator configured to receive the refrigerant and oil flow from the low-pressure line of the VCRS and output a oil flow and a refrigerant flow. The system may further include an oil collector configured to receive the separated oil flow provided by the oil separator. A valve may control an oil flow from the oil collector to the low-pressure line. A level sensor may measure oil level in the oil collector. The system may close, in response to the oil being at or less than a first level, the valve to collect oil in the oil collector. The system may open, in response to the oil being at or greater than a second level, the valve to release oil from the oil collector to the low-pressure line.

Abstract: A low-profile air purifier comprises a housing that includes a pair of plates opposing one another, an intake opening and an output opening; a toroidal fan rotatably mounted in the housing between the plates, an axis of the toroidal fan being essentially perpendicular to the plates; a motor disposed in a central opening of the toroidal fan for rotating the toroidal fan; and a filter mounted to the housing for filtering air flowing through the housing. The present patent application also discloses a modular wall section that comprises an internal frame; an air purifier mounted within the internal frame; and a panel mounted in the internal frame for movement between an open position for accessing the air purifier and a closed position concealing the air purifier. The air purifier of the modular wall section may have similar configuration as the above discussed low-profile air purifier.

Abstract: A controller for hydraulic system of a work machine is provided. The controller is configured to perform a worktool disconnect routine to reduce pressure in a first worktool line and a second worktool line of the hydraulic system. The hydraulic system comprises a spool valve, a first worktool port connected to the spool valve by the first worktool line, a second worktool port connected to the spool valve by the second worktool line, a high pressure flow source of hydraulic fluid connected to the spool valve by a high pressure line and a low pressure tank line connected to the spool valve, the low pressure tank line at a lower pressure than a pressure of the high pressure line.

Abstract: A technique for powering gate drivers in a half-bridge configuration uses a single external power supply to power each gate driver. A single on-chip regulator regulates the positive turn-on voltage for each switch. The regulator overhead, is also used as the negative voltage for turn-off, thus transferring the low-frequency variation of the external power supply to the negative turn-off voltage. Accordingly, a single on-chip regulator generates both the positive turn-on voltage and the negative turn-off voltage. In at least one embodiment, reuse of the switch turn-off current further reduces on-chip power dissipation. The on-chip regulator's output filter capacitor discharges during turn-on of the external power switching device. During turn-off, the current that discharges the switch gate capacitance recharges the regulator filter capacitor.

Abstract: Location polygons are defined along traffic lanes and parking spaces to facilitate determination of the location of a vehicle relative to features associated with the location polygons. The location polygons are used, in one application, to identity entrance and exit of a special toll lane along a roadway, and to ensure that the vehicle properly enters and exits the tolling lane.

Abstract: A server-based environment for reporting a status of a security, monitoring and automation controller is provided. Detecting cessation of an always-on persistent network connection between the SMA controller and the server is also provided. Reporting the cessation of the network connection to an end user and defined others is further provided. A further aspect provides for automatically reporting an alarm event to a central station, the end user, and others, in the event the cessation of the network connection occurs while the SMA controller is aimed and after a zone fault event, and not receiving a disarm notification prior to expiration of a preset entry delay.

Abstract: A clip for mounting a panel to an internal frame of a modular wall is provided. The frame comprises vertical frame members with a plurality of vertically arranged mounting openings. The clip comprises a mounting portion for attaching the clip to the panel, a mounting insert extending in an insertion direction for insertion into one of the mounting openings on one of the vertical frame members with a longitudinal direction of the clip aligned in the vertical direction of the vertical frame member, and an alignment member offset from the mounting insert in a lateral direction of the clip. The alignment member may extend further in the insertion direction than the mounting insert and being configured such that contact of the alignment member with a vertical edge of the vertical frame member aligns the mounting insert in the lateral direction with the corresponding mounting opening for insertion therein.

Abstract: A security system architecture including bidirectional communication between a sensor control device and one or more sensor devices coupled to the controller is provided. Such functionality is provided by virtue of a bidirectional wireless transceiver and processor in each sensor device. Embodiments of the present invention further provide this functionality by virtue of a coordinating transceiver coupled to the security system controller for communication with the sensor devices.

Abstract: An internal assembly (230) for a tool (200) includes a retainer (232) that at least partially defines an axial bore (238). The retainer (232) further defines a port (246) providing a path of fluid communication from an exterior of the retainer to the bore (238). The internal assembly (230) also includes an electromagnet (250) coupled to the retainer (232). The electromagnet (250) is configured to actuate between an on state and an off state and to attract magnetic debris in a fluid when in the on state. The internal assembly (230) also includes a sleeve (260) that is configured to be positioned downstream from the retainer (232). The sleeve (260) at least partially defines the bore (238). The sleeve (260) further defines a port (262) that provides a path of fluid communication from the bore (238) to an exterior of the sleeve (260). The internal assembly (230) also includes a valve (270) configured to be positioned downstream from the port (262) in the sleeve (260).

Abstract: A method for validating operation of a driver integrated circuit includes providing a signal using an output node. The signal is provided using multiple set points in response to a change in state of an input signal. Each set point corresponds to a different phase of a multi-phase transition of the signal. The method includes providing a timer value at an end of a phase of the multi-phase transition and determining whether the signal is in a target signal range of the phase based on the timer value at the end of the phase, a predetermined value defining the target signal range of the phase, and a predetermined time limit for the phase. A current through the output node may be provided using the multiple set points, and a voltage on the output node may have the multi-phase transition.

Abstract: Methods, systems, and computer-readable media for execution of replicated tasks using redundant resources are disclosed. Replicas of a task are generated. Computing resources are selected from at least one pool of computing resources of a provider network. The provider network includes a plurality of pools of computing resources that vary in a characteristic, and the computing resources are selected based (at least in part) on the characteristic. Concurrent execution of the replicas of the task is initiated using the selected computing resources. Input data for the concurrent execution does not vary from one of the replicas to another of the replicas, and at least a portion of the replicas produce individual results for the input data. Based (at least in part) on a policy, an individual result of one or more of the replicas is selected as a final result of the task.

Abstract: There is provided an apparatus comprising a requirement determination unit to determine an energy requirement for a system component. A status determination unit determines status information relating to a plurality of heterogeneous energy stores and actuating system control unit controls an activity of the system component in dependence on the status information relating to the plurality of heterogeneous energy stores and the energy requirement.

Abstract: A system and method for construction estimation using aerial images is provided. The system receives at least one aerial image of a building. An estimation engine processes the aerial image at a plurality of angles to automatically identify a plurality (e.g., perimeter and interior) lines in the image corresponding to a plurality of features of a roof the building. The estimation engine allows users to generate two-dimensional and three-dimensional models of the roof by automatically delineating various roof features, and generates a report including information about the roof of the building.

Abstract: A temporal multi-configuration model dataset system comprises a computer system configured to: compare a prior parts list for a vehicle at a point in time to a current parts list in which comparing the prior parts list with the current parts list results in a comparison; determine change lists for the parts that changed using the comparison; append models to a model dataset for the vehicle in response to parts added to the vehicle, wherein models are not removed from the model dataset in response to parts being removed from the vehicle; determine display parts in the model dataset present for a selected point in time in response to receiving a request to visualize the vehicle at the selected point in time in which the display parts are determined using the set of change lists; and display a visualization of the vehicle using the display parts on a display system.

Abstract: Drill strings and related ball dropping tools are provided. In accordance with an example, a ball dropping tool 102 includes an outer body 116, an inner body 126, a side bore 132, 133, a ball 112, 114, and an actuator 146. The outer body 116 has a first end 118, a second end 120, and an axial bore 122 extending between the first end 118 and the second end 120 and forming a flow path 123. The inner body 126 has a first end 128 and a second end 130 and forms a bypass passage 131 extending between the first end 128 and the second end 130 of the inner body 126. The side bore 132, 133 is defined by the inner body 126 and is disposed at an angle relative to the axial bore 122 of the outer body 116. The bypass passage 131 is disposed in a portion of the flow path 123 and is in communication with the side bore 132, 133. The ball 112, 114 is disposed within the side bore 132, 133. The actuator 146 is disposed within the outer body 116.

Abstract: This disclosure includes manifolds, subsea valve modules, and related methods. Some manifolds and/or subsea valve modules include one or more inlets, each configured to receive hydraulic fluid from a fluid source, one or more outlets, each in selective fluid communication with at least one of the inlets, and one or more subsea valve assemblies, each configured to selectively control hydraulic fluid communication from at least one of the inlets to at least one of the outlets, where at least one of the outlets is configured to be in fluid communication with an actuation port of the hydraulically actuated device.

Abstract: An area of Barrett's oesophagus in a subject's oesophagus is quantified from a video image signal representing a video image of the subject's oesophagus captured using a camera of an endoscope. Depth estimation on the frames to derive depth maps in respect of frames of the video image. Regions of the frames corresponding to an area of Barrett's oesophagus in the subject's oesophagus are segmented. A value of a geometrical measure of the area of Barrett's oesophagus is calculated using the depth map and segmented region in respect of at least one of the frames.

Abstract: An ink composition is provided. The composition includes a binder material and at least one narrow band emission phosphor being uniformly dispersed throughout the composition, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 ?m to about 15 ?m and is selected from the group consisting of a green-emitting U6+-containing phosphor, a green-emitting Mn2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn4+, and a mixture thereof. A device is also provided.

Abstract: Mechanisms are provided to implement a hardened ensemble artificial intelligence (AI) model generator. The hardened ensemble AI model generator co-trains at least two AI models. The hardened ensemble AI model generator modifies, based on a comparison of the at least two AI models, a loss surface of one or more of the at least two AI models to prevent an adversarial attack on one AI model, in the at least two AI models, transferring to another AI model in the at least two AI models, to thereby generate one or more modified AI models. At least one of the one or more modified AI models then processes an input to generate an output result.