Abstract: A materialization configuration request is received via a programmatic interface from a client of a journal-based multi-data-store database. The request indicates a partitioning rule to be used to select, for respective writes indicated in committed transaction entries of a journal, the materialization node at which the writes are to be stored. A control plane component of the database verifies that a set of materialization nodes corresponding to the partitioning rule has been established, and initiates the propagation of writes from the journal to the materialization nodes by respective write appliers.

Abstract: A patient simulator system includes a right eye assembly including a right eyelid and a right pupil, and a left eye assembly including a left eyelid and a left pupil, wherein the right pupil moves within an area of the right eye and the left pupil moves within an area of the left eye. In various embodiments, right/left optical sensors provide right/left electrical signals based on sensed light conditions associated with the right/left eyes, and a microprocessor changes a size of the right iris based on the right electrical signal, and changes a size of the left iris based on the left electrical signal. In various embodiments, the microprocessor electrically actuates at least one blink motor to rotate, wherein rotation of the at least one blink motor results in motion of the right eyelid and/or the left eyelid to simulate blinking.

Abstract: An electric discharge machining (EDM) system includes an electrode set having a plurality of electrodes. Each electrode is electrically-isolated from the other electrodes. The EDM system includes a power supply configured to generate an electric discharge between a workpiece and the electrode set to remove material from the workpiece. The power supply includes a multi-loop driver system and an AC-to-DC component that outputs DC electric power. The multi-loop driver system includes a plurality of power loop circuits coupled to an output of the AC-to-DC component. Each power loop circuit is electrically-isolated from other power loop circuits and is coupled to at least one electrode. The multi-loop driver system includes a drive controller coupled to the power loop circuits. The drive controller is configured to transmit at least one control signal to at least one power loop circuit to drive the AC-to-DC component to generate the electric discharge.

Abstract: A system for measuring ball speed, the system comprising a camera configured to capture a live video stream including a plurality of frames, a processor, a memory having executable instructions stored thereon that when executed by the processor cause the processor to load configuration information for initializing settings for the processor and the camera, receive data representation of an environment layout, analyze the plurality of frames to identify a ball, calculate a speed of the ball at a release point based on the analysis, generate data representative of the calculated speed, and a display operative to display the data representative of the calculated speed.

Abstract: A portable, compact, collapsible, adjustable, archery crossbow press for high poundage crossbows which have a rifle-like frame with an elongate channel and transverse limbs with outwardly located cams or wheels connected by a bow string. The crossbow press includes two limb clamp assemblies that releasably capture the transverse limbs about the cams. A flexible connector connects the two limb clamp assembles just above the rifle-like frame. A safety hook block fits within the elongate channel rearwardly of the crossbow string and is anchored to the rifle-like frame. A mechanical cocking device pulls the flexible connector rearwardly to secure it to a hook on the anchored safety hook block.

Abstract: Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.

Abstract: A portable, compact, collapsible, adjustable, archery crossbow press for high poundage crossbows which have a rifle-like frame with an elongate channel and transverse limbs with outwardly located cams or wheels connected by a bow string. The crossbow press includes two limb clamp assemblies that releasably capture the transverse limbs about the cams. A flexible connector connects the two limb clamp assembles just above the rifle-like frame. A safety hook block fits within the elongate channel rearwardly of the crossbow string and is anchored to the rifle-like frame. A mechanical cocking device pulls the flexible connector rearwardly to secure it to a hook on the anchored safety hook block. Crossbows with a crank-type cocking device utilize a slide moveable within the elongate channel to capture and pull the flexible connector into a rearward locked position. In this condition, the bow string, string sights, dampers, tension cable, cams and other components may be safely worked on or replaced.

Abstract: Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.

Abstract: Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.

Abstract: Various embodiments provide a systems and methods for finding wireless signals sufficient for installation of wireless home automation devices. Before such home automation devices are installed, or during the process of installing such home automation devices, the remote-control device of a wireless home automation hub may detect whether a suitable wireless signal is able to be received from the home automation hub or from a wireless repeater device at various locations on the customer premises and indicate that on the remote-control device. The remote control device may continue to display such an indication regarding the signal, or lack thereof, as the user moves about the customer premises with the remote control. In this manner, the user may find what locations on the customer premises are suitable for installation of home automation devices to communicate wirelessly with the home automation hub.

Abstract: An electric discharge machining (EDM) system includes an electrode set having a plurality of electrodes. Each electrode is electrically-isolated from the other electrodes. The EDM system includes a power supply configured to generate an electric discharge between a workpiece and the electrode set to remove material from the workpiece. The power supply includes a multi-loop driver system and an AC-to-DC component that outputs DC electric power. The multi-loop driver system includes a plurality of power loop circuits coupled to an output of the AC-to-DC component. Each power loop circuit is electrically-isolated from other power loop circuits and is coupled to at least one electrode. The multi-loop driver system includes a drive controller coupled to the power loop circuits. The drive controller is configured to transmit at least one control signal to at least one power loop circuit to drive the AC-to-DC component to generate the electric discharge.

Abstract: Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.

Abstract: Various embodiments provide a systems and methods for finding wireless signals sufficient for installation of wireless home automation devices. Before such home automation devices are installed, or during the process of installing such home automation devices, the remote-control device of a wireless home automation hub may detect whether a suitable wireless signal is able to be received from the home automation hub or from a wireless repeater device at various locations on the customer premises and indicate that on the remote-control device. The remote control device may continue to display such an indication regarding the signal, or lack thereof, as the user moves about the customer premises with the remote control. In this manner, the user may find what locations on the customer premises are suitable for installation of home automation devices to communicate wirelessly with the home automation hub.

Abstract: Various arrangements for monitoring and mitigating infrared (IR) interference from a display device are presented. IR emissions from a display device are measured the IR signaling characteristics may be adjusted to mitigate interference from the emissions. Calibration methods may be used determine display emission characteristics by displaying test patterns and video clips. Characteristics of the display patterns and video clips may be correlated to high IR emissions.

Abstract: Systems for aiding emergency responders are described. An exemplary system may include a primary device and a secondary device. The primary device may be configured to provide audio communication between the primary device and one or more of the plurality of secondary devices along a wireless communication path. The primary device may be configured to compress audio communication for transmission over a low bitrate band. The plurality of secondary devices may be configured as a network where each of the devices is configured to communicate with at least two other secondary devices. The secondary devices may also be configured to receive audio communication from the primary device and automatically transmit the received audio communication to one or more other of the secondary devices.

Abstract: A system for measuring ball speed, the system comprising a camera configured to capture a live video stream including a plurality of frames, a processor, a memory having executable instructions stored thereon that when executed by the processor cause the processor to load configuration information for initializing settings for the processor and the camera, receive data representation of an environment layout, analyze the plurality of frames to identify a ball, calculate a speed of the ball at a release point based on the analysis, generate data representative of the calculated speed, and a display operative to display the data representative of the calculated speed.

Abstract: An electronic monitoring system and method for monitoring one or more transport services, wherein for each one of one or more portable electronic devices, data of the portable electronic device indicative of the location of the portable electronic device is monitored and the location data stored in a memory of the portable electronic device. Each device monitors for a boarding trigger event indicative of a user carrying the portable electronic device boarding a transport service, and upon a boarding trigger event occurring, communicates monitoring data to a remote monitoring system, the monitoring data including at least time data of the boarding trigger event and data indicative of the location of the portable electronic device. The remote monitoring system monitors one or more transport services using data communicated by the portable electronic devices.

Abstract: A patient simulator system includes a right eye assembly including a right eyelid and a right pupil, and a left eye assembly including a left eyelid and a left pupil, wherein the right pupil moves within an area of the right eye and the left pupil moves within an area of the left eye. In various embodiments, right/left optical sensors provide right/left electrical signals based on sensed light conditions associated with the right/left eyes, and a microprocessor changes a size of the right iris based on the right electrical signal, and changes a size of the left iris based on the left electrical signal. In various embodiments, the microprocessor electrically actuates at least one blink motor to rotate, wherein rotation of the at least one blink motor results in motion of the right eyelid and/or the left eyelid to simulate blinking.

Abstract: A system for attracting fish by means of incorporating the metals of a lure, hook or fishing accessory along with anode metals to create a corrosion cell. The corrosion cell, also known as an electrochemical cell, when immersed in an electrolyte of fresh or salt water, will generate a fish attracting, positive (+) voltage field which radiates from the lure, hook or fishing accessory.

Abstract: A circuit for generating an output voltage to a top node of a plurality of LED strings. The circuit includes an inductor having a load current flowing therethrough and a switching transistor responsive to a switching control signal. An integrator generates a compensation voltage responsive to a voltage at a bottom node of the LED string and a reference voltage. Circuitry for combining an a correction offset with the compensation voltage is responsive to the compensation voltage and the load current through the inductor. The offset is generated only during a step load change of the load current and substantially reduces voltage transients from the compensation voltage and the output voltage. A summation circuit sums the compensation voltage including the correction offset with at least the voltage at the bottom node of the LED string to generate a first control signal. A latch generates the switching control signal responsive to the first control signal and a leading edge blanking signal.