Abstract: A jet flow adjustment method for rotary steerable downhole release includes steps of: defining a diversion ratio p of a jet nozzle by a ground control system; and sending the diversion ratio p of the jet nozzle to a control unit of a downhole rotary steerable system; and determining an opening areas of the jet nozzle by the control unit according to the diversion ratio p of the jet nozzle and an equivalent channel area S of a drilling tool; controlling an adjustable bypass valve by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle, so as to control an overlapping area between sector holes of a rotor end and a stator end, thereby opening the jet nozzle for release. The present invention has simple control and strong release ability.

Abstract: A hydrostatic transmission mechanism of the power split transmission system is in driving connection to the sun gear of the first planetary gear train and the sun gear of the second planetary gear train. The planetary carrier of the first planetary gear train is connected to the planetary carrier of the second planetary gear train. The planetary carrier of the first planetary gear train is connected to the sun gear of a third planetary gear train. The driving plate of a third clutch is in transmission connection to the gear ring of the third planetary gear train. The driving plate of a fourth clutch is in transmission connection to the sun gear of the third planetary gear train. Each of the driven plate of the third clutch and the driven plate of the fourth clutch is connected to an output main shaft.

Abstract: This application discloses a wet gas flow rate metering method and device thereof. The Coriolis mass flowmeter measures a total mass flow rate Qm, a mixed density ?mix, and a medium temperature T; a combination of sensors measures a differential pressure ?P between an inlet and an outlet; a flow rate calculation module performs multi-physical field coupling calculation to obtain an average gas density ?g; according to the mixed density ?mix, the average gas density ?g, and a liquid density ?l, a mass liquid content ?m of a mixed medium is calculated, and the total mass flow rate Qm is corrected by the mass liquid content ?m, the medium temperature T and the average pressure P to obtain a corrected total mass flow rate Qm?. According to the total mass flow rate Qm? and the mass liquid content ?m, a two-phase flow rate is calculated.

Abstract: A method is for determining a wearing state of earphones. The method includes determining an onto-ears event or off-ears event experienced by the earphones on the basis of first data indicating motion of the earphones. The method further includes determining a first wearing state of the earphones on the basis of second data indicating proximity of the earphones to a user's skin. The method additionally includes determining the wearing state of the earphones on the basis of the determined onto-ears event or off-ears event and the first wearing state. This increases the accuracy of detection of the wearing state of the earphones. Based on this more accurately determined wearing state, the earphones can switch appropriately between a low power consumption mode and a normal operating mode, thereby improving the energy consumption of the earphones.

Abstract: A method of analyzing source code includes receiving, by a processor, an updated version of a computer program, the updated version including a source code. The method also includes preprocessing, by a compiler, the source code for a target computing platform. Preprocessing the source code by the compiler includes identifying a macro condition associated with one or more computer instructions enclosed by a macro, determining object code corresponding to the one or more computer instructions based on a current value of the macro condition, and generating object code and macro information for output to a debugger, the macro information including one or more breakpoint conditions in the macro.

Abstract: The present disclosure discloses a method and device in a wireless communication system, the method including: receiving configuration information for configuring multiple cells for a terminal device; and determining a reference cell for a first symbol according to a tenth cell from the multiple cells, or determining the reference cell for the first symbol according to a cell other than the tenth cell from the multiple cells, wherein the first symbol is configured as uplink in the tenth cell and at least one frequency-domain resource in the tenth cell is for a downlink transmission; or the first symbol is configured as downlink in the tenth cell and at least one frequency-domain resource in the tenth cell is for uplink transmission. The present disclosure improves the flexibility and reliability of the wireless communication system.

Abstract: This is an early warning method for a shallow soil landslide based on a digital topographic map, belonging to the field of landslide prevention and control engineering. It has following steps: a. connecting a straight line along an upward bulged intermediate point of a contour line of the topographic map as an intermediate line; b. determining an intermediate point; c. constituting a three-point group of a plane curvature; d. taking an arithmetic average of slopes as a slope ? of a landslide mass. The shallow soil landslide can be early warned without a lot of historical observation data of landslide occurrence, and the dangerous landslide mass can be determined in advance, which greatly improves the applicability of disaster prevention and the early warning efficiency.

Abstract: Disclosed are a method and apparatus for determining an RA-RNTI. In the present application, a base station receives a random access preamble sent by a terminal; the base station determines an RA-RNTI according to a time-frequency resource occupied by the random access preamble, and the time-frequency resource is a time-frequency resource of an orthogonal frequency division multiplexing (OFDM) symbol level; and the base station sends a random access response message, and the random access response message includes downlink control information allocated, by the base station, for the terminal, and the downlink control information is scrambled using the RA-RNTI. By means of the present application, an RA-RNTI can be determined during a random access process of an NR system.

Abstract: A switched-mode power supply (SMPS) chip and system are disclosed, which are used for determining a maximum power output of a solar photovoltaic panel connected to the SMPS chip. The SMPS chip includes a sampled current comparator module, a logic control module connected to the sampled current comparator module, and a charge/discharge control module connected to the logic control module. According to the present invention, an output current from the SMPS system to an external load is detected and serves as a basis for incrementally adjusting a minimum input voltage of the SMPS chip and hence an output voltage of the solar photovoltaic panel. In this way, an output voltage level of solar photovoltaic panel corresponding to the maximum power output thereof under a given condition can be determined. Through keeping the solar photovoltaic panel operating at that output voltage level, it is ensured that the solar photovoltaic panel provides the maximum power output under the given condition.

Abstract: A rotary earhanger structure of a wireless earphone includes an earhanger unit and a movable connection sleeve rotationally connected therewith. One end of the earhanger unit includes a first inclined surface portion extending obliquely in a preset rotational direction. The movable connection sleeve has a second inclined surface portion cooperatively connected with the first inclined surface portion. The movable connection sleeve is connected with an elastic member for driving the movable connection sleeve in a direction close to the earhanger unit. The external force rotates the earhanger unit in the preset rotating direction to adjust the wearing angle. When the earhanger unit is not subjected to the external force, the movable connection sleeve moves in the direction close to the earhanger unit under the force of the elastic member, so that the automatic reset function after the earhanger rotation is realized, thereby simplifying user operation and improving user experience.

Abstract: A composition and use thereof. The composition comprises an active component a and an active component b; the active component a is a compound as shown in general formula A; and the active component b is at least one of compounds which have insecticidal, acaricidal or bactericidal activity and are different from the compound as shown in general formula A. The composition has the advantages of synergistic effect and expanding prevention and treatment spectrum, and can be used for preventing and treating various pests, particularly mite damage, and plant diseases caused by various fungi, bacteria, nematodes and viruses.

Abstract: A battery pack including fire extinguishing equipment. The fire extinguishing equipment includes a first chamber, a second chamber, and an activation line. The first chamber stores a fire extinguishing chemical agent, the second chamber stores a gas-generating chemical agent, and the activation line extends into the second chamber to be in contact with the gas-generating chemical agent. The second chamber includes a pressure relief opening, and the pressure relief opening is in communication with the first chamber, and is configured to spray the gas in the second chamber to the first chamber. The first chamber includes a discharge opening, and the discharge opening is configured to discharge the fire extinguishing chemical agent in the first chamber after the gas generated after the gas-generating chemical agent is ignited enters the first chamber.

Abstract: A radiating element includes: a plurality of radiators, where each radiator includes a first side arm segment and a second side arm segment; a plurality of feeder rods, where each feeder rod is electrically connected to a respective one of a plurality of first side arm segments and a plurality of second side arm segments, where each group of feeder rods and their connected side arm segments include a first portion and a second portion electrically insulating from each other; and at least one common mode current suppressing component, where each common mode current suppressing component includes a first conductive portion and a second conductive portion adjacent to each other and electrically insulating, where the first conductive portion is electrically connected between a first portion of a group of feeder rods and their connected side arm segments and a second portion of an adjacent group of feeder rods and their connected side arm segments, and the second conductive portion is electrically connected betwee

Abstract: The invention provides a non-contact indoor thermal environment control system and a method based on reinforcement learning, which adopts a non-contact measurement mode to collect the video information of indoor personnel and judge the hot/cold state of the personnel through the processing of the video information. It can reduce the intrusiveness caused by the use of measuring equipment. At the same time, the invention adopts the reinforcement learning method to train and obtain the optimal thermal environment control strategy according to the environmental information, the hot and cold state of the personnel and the previous regulation strategy, which not only considers the difference of individual thermal comfort, but also satisfies the dynamic thermal comfort of personnel, improves the regulation efficiency of indoor thermal environment. At the same time, it can reduce the energy consumption of HVAC, achieve a sustainable state of energy saving and environmental protection.

Abstract: Provided is a method for a dynamic state estimation of a natural gas network considering dynamic characteristics of natural gas pipelines. The method can obtain a result of the dynamic state estimation of the natural gas network by establishing an objective function of the dynamic state estimation of the natural gas network, a state quantity constraint of a compressor, a state quantity constraint of the natural gas pipeline and a topological constraint of the natural gas network, and using a Lagrange method or an interior point method to solve a state estimation model of the natural gas network. The method takes the topological constraint of the natural gas network into consideration, and employs a pipeline pressure constraint in a frequency domain to implement linearization of the pipeline pressure constraint, thereby obtain a real-time, reliable, consistent and complete dynamic operating state of the natural gas network.

Abstract: A three-dimensional ultrasonic imaging method includes transmitting an ultrasonic wave to a fetal head; receiving an ultrasonic echo, obtaining an ultrasonic echo signal, and obtaining the three-dimensional volume data of the fetal head according to the ultrasonic echo signal; according to the characteristics of a median sagittal section of the fetal head, detecting the median sagittal section in the three-dimensional volume data; and displaying the median sagittal section.

Abstract: Disclosed is a method for preparing a nano-porous carbon material, comprising the following steps of: mixing polypyrrole nano-fibers with an activator, conducting microwave heating for reaction, and purifying to obtain the nano-porous carbon material. Compared with a conventional high-temperature carbonization method, the method for preparing the nano-porous carbon material of the present disclosure is simple in raw material, convenient to operate, less in time consumption and more suitable for mass preparation and production of the nano-porous carbon materials.