Abstract: The provided invention relates to search engines and may be used to search for vacancies and resumes in databases. Further, the invention may be used to sort out vacancies and resumes by professional area and other predetermined similarity criteria. The technical result is to reduce labor costs for the preparation of materials required for machine learning, reduce the amount of machine computing, accelerate the receipt of results, and reduce the time for analyzing search results. To achieve the technical result, the recommender system uses learning and working databases, wherein the learning sequences are formed by sorting and processing the learning database matrices based on user feedback with regard to the degree of correspondence of the results presented to them to the query subject.

Abstract: A wave energy capture system deployed in water converts mechanical motion induced by waves in the water to electrical energy. A controller of the wave energy capture system receives input regarding real-time wave conditions in a vicinity of the wave energy capture system. The controller applies a control model to the received input to select a value of a control parameter for the wave energy capture system, where the control model includes a model that has been trained using machine learning to take wave condition data as input and to output control parameter values selected based on the wave condition data in order to increase an amount of energy captured by the wave energy capture system. The controller implements the selected value of the control parameter on the wave energy capture system.

Abstract: An error amplifier includes an output pin coupled to a pulse width modulation (PWM) comparator of a buck-boost converter. A first transconductance amplifier adjusts an output current at the output pin and operates in a constant voltage mode. The first transconductance amplifier includes a first positive input to receive a first voltage reference and a first negative input coupled to a tap point of a voltage divider coupled between a voltage bus and a ground of the buck-boost converter. A second transconductance amplifier also adjusts the output current at the output pin and operates in a constant current mode. The second transconductance amplifier includes a second positive input to receive a second voltage reference and a second negative input coupled to a current sense amplifier, the current sense amplifier being coupled to a sense resistor positioned inline along the voltage bus.

Abstract: A system for determining the leakage current of a field effect transistor over temperature includes a metal oxide semiconductor field effect transistor (MOSFET) having first and second current terminals and a control terminal, wherein the first current terminal is coupled to a current measurement device. A switch is coupled to the control terminal and to a voltage source. The switch is configured to apply a voltage between a control terminal and a current terminal of the (MOSFET) responsive to a first signal, and apply approximately zero volts to the control terminal of the (MOSFET) responsive to a second signal.

Abstract: In a transistor that includes an oxide semiconductor, a change in electrical characteristics is suppressed and the reliability is improved. A semiconductor device that includes a transistor is provided. The transistor includes a first conductive film that functions as a first gate electrode, a first gate insulating film, a first oxide semiconductor film that includes a channel region, a second gate insulating film, and a second oxide semiconductor film and a second conductive film that function as a second gate electrode. The second oxide semiconductor film includes a region higher in carrier density than the first oxide semiconductor film. The second conductive film includes a region in contact with the first conductive film.

Abstract: Embodiments relate to a test method for testing an unpopulated printed circuit board. The method can involve the steps of: exposing the unpopulated printed circuit board to temperatures of a reflow soldering process in a first step; and testing the electrical connections of the unpopulated printed circuit board. Embodiments also relate to a test device and a method for producing populated printed circuit boards.

Abstract: The present disclosure relates to a thermally enhanced package, which includes a carrier, a thinned die over the carrier, a mold compound, and a heat extractor. The thinned die includes a device layer over the carrier and a dielectric layer over the device layer. The mold compound resides over the carrier, surrounds the thinned die, and extends beyond a top surface of the thinned die to define an opening within the mold compound and over the thinned die. The top surface of the thinned die is at a bottom of the opening. At least a portion of the heat extractor is inserted into the opening and in thermal contact with the thinned die. Herein the heat extractor is formed of a metal or an alloy.

Abstract: An amplifier circuit is provided. The amplifier circuit outputs a pair of differential output signals through a first output terminal and a second output terminal. The amplifier circuit includes a first amplifier stage electrically connected to a first node and a second node for amplifying a pair of differential input signals; a second amplifier stage which is electrically connected to the first node and the second node and coupled to the first output terminal and the second output terminal; a first switch, coupled between the first output terminal and a first reference voltage; a second switch, coupled between the second output terminal and the first reference voltage; a third switch, coupled between the first node and the first reference voltage; a fourth switch coupled between the second node and the first reference voltage; and a fifth switch coupled between a second reference voltage and the first amplifier stage.

Abstract: A system and method are provided for data fusion between portable electronic devices and wearable accessories that is used to improve location information, particularly with respect to vertical location. A barometer sensor in a wearable accessory is used to obtain relative accurate height information, and an ultra wide band (UWB) radio is used to determine the distance between the wearable accessory and the portable electronic device. At a second timestamp, a barometer in a wearable device is used to calculate a difference in elevation between the first timestamp and the second timestamp. This measurement, along with a measured distance between the devices, can be used to accurately determine elevation. The wireless accessory and the portable electronic device communicate the obtained height and distance information. Accordingly, accurate navigation signals may be provided, even where multiple levels of roadways overlap, such as in parking garages or complex highway interchanges.

Abstract: An ethyl 2-[9-(6-fluoro-2-hydroxyquinolin-3-yl)-1,8-dioxo-3,4,9,10-tetrahydroacridine-10-yl]-acetate compound, its synthesis, and its use as an antimicrobial agent.

Abstract: A temperature control system and method for devices under test and an image sensor-testing apparatus having the system are provided. The temperature control method for devices under test mainly comprises the steps of regulating the temperatures of a plurality of devices under test (DUTs) to a specific temperature in a temperature control zone; transferring the plurality of devices under test to a test plate and placing them into a plurality of test slots respectively; and measuring the temperatures of the device under test by the temperature-sensing elements in the test slots, wherein when at least one temperature-sensing element of the temperature-sensing elements detects that the device under test in the test slot corresponding to said at least one temperature-sensing element fails to meet the specific temperature, a temperature control element corresponding to the test slot regulates the temperature of the device under test.

Abstract: In a measurement system, a signal probing circuit may provide probed signals by probing voltages and currents and/or incident and reflected waves at a port of a device under test (DUT). A multi-channel receiver structure may include receivers that receive two probed signals from the signal probing hardware circuit, each receiver having its own sample clock derived from a master clock and further having a respective digitizer for digitizing a corresponding one of the two probed signals. A synchronization block, external to the receivers and including a reference clock derived from the master clock, may enable the two probed signals to be phase coherently digitized across the receivers by synchronizing the respective sample clocks of the receivers while the reference clock is being shared with the receivers. A signal processing circuit may then process the phase coherently digitized probed signals.

Abstract: Systems methods and apparatuses for conversion of kinetic energy, which may include: a sail element; a mast; piston device(s) each comprising a piston housing and a piston; movable element(s) connectable to an edge of each piston; and a transmission subsystem movably connectable to the mast and to the movable element(s). The moveable element(s) and piston(s) are movable along a slopped linear path. Clockwise and/or counterclockwise rotations of the mast, caused by wind, are translatable into linear movements of the moveable element(s) and the piston(s), in a first linear trajectory, where the weight of the moveable element(s) causes opposite linear movement of the moveable element(s) and piston(s) in a second opposite linear trajectory, which causes reciprocal movements of the piston(s) causing fluid pressure by emptying and filling of a fluid therefrom and thereto. The mechanical apparatus can connect to a power generation subsystem, configured for conversion of fluid pressure into electrical power.

Abstract: A board adapter device includes: a first adapter structure provided with a gold finger matched with a board of a target memory module, a second adapter structure provided with a connector matched with the gold finger, and a signal transmission structure including a first and second transmission module. The first transmission module is for connecting a data signal line, a clock signal line, an address signal line, and a control signal line of the gold finger to corresponding connecting lines of the connector. The second transmission module is configured to, when receiving a power input signal, convert the power input signal into a power output signal matched with a power supply of the target memory module, and transmit the power output signal to a power signal line of the connector.

Abstract: This invention relates to a self-excited oscillation suppression device and method for the power amplifying circuit, belonging to the field of electronic technology. Said power amplifying circuit includes a FET and a feedback loop. Said device includes: a first compensation circuit which is connected between a drain and a gate of the FET and a second compensation circuit which is connected in parallel with a feedback resistor of said feedback loop. It can solve self-excited oscillation caused by deep negative feedback in the existing power amplifying circuit. The first compensation circuit can shift the open-loop gain curve forward as a whole, and the second compensation circuit can speed up the closure of the feedback gain curve and the open-loop gain curve so that the two curves will close up before the self-excited oscillation; the self-excited oscillation will be suppressed, and the stability of the power amplifying circuit will be improved.

Abstract: A method and system for associating information regarding an object with image objects is disclosed, wherein each image object is a visual data containers including an image associated with the object and data items relating to the object. A user may interact with a graphical user interface to create, modify, and associate image objects by means of the associated images. Information regarding the objects may be associated therewith by means of the image objects, and image objects may be associated with other image objects to generate associations between information regarding the underlying objects. Information regarding other image objects or the associated image may be used to determine information regarding the object, which may be associated with the image object. In some embodiments, associating two or more image objects may associate the underlying objects for purposes of insurance policies or may generate a new insurance policy based on the image objects.

Abstract: An offshore wind turbine erected in a body of water includes a generator, a foundation, a nacelle, a tower having a first end mounted to the foundation and a second end supporting the nacelle, an electrolytic unit arranged above a water level and electrically powered by the generator to produce hydrogen from an input fluid, in particular water, and a fluid supply assembly for supplying the input fluid from a fluid inlet arranged below the water level to the electrolytic unit by means of a fluid connection, wherein the fluid supply assembly includes a cleaning unit configured to clean a build-up formed along an area extending through the inner part of at least a part of the fluid connection or formed at the fluid inlet.

Abstract: Disclosed herein is a hydropower electric generator, in accordance with some embodiments. Accordingly, the hydropower electric generator may include a closed conduit. Further, the closed conduit may include a reservoir, two downward flow pipes, two horizontal pipes, and two upward flow pipes. Further, the downward flow pipes may include turbines configured to intercept the downward flow of the water and generate rotational force. Further, the upward flow pipe may include an airlift assembly configured to receive compressed air into the upward flow pipe. Further, the hydropower electric generator may include an air pump configured to generate the compressed air based on electrical energy. Further, the hydropower electric generator may include an energy storage device.

Abstract: A system for maintaining a meta-database including meta-data representing decentralized data from source databases, which cause inefficient selection of modeling data and/or variables. Each of source and meta-data interfaces communicate with the respective database(s). A key variable repository module operably couples the databases and includes an AI program with a scanner algorithm and a profiler algorithm. The scanner algorithm receives the source data from the source interface, compresses the data, and synchronizes the data with the meta-data using the meta-database interface. The profiler algorithm receives the meta-data from the meta-database interface, generates granular data types for the meta-data, determines variables indicative of the meta-data, generates variable probability distributions, produces variable associations, and modifies the meta-database to include the probability distributions and associations using the meta-data interface.

Abstract: A control apparatus is configured to control driving of a power generation apparatus including a motor and a power generator. The control apparatus includes a processor configured to calculate: (i) a first adjustment force command value for controlling the motor in accordance with a deviation between an observed value and a reference value of a rotation speed of the power generator; (ii) a correction value for compensating for a delay of an electric output of the power generator; and (iii) a second adjustment force command value for controlling the motor by adding the first adjustment force command value and the correction value.