Abstract: The present invention discloses a coevolution-based multi-beamforming optimizing method for space-based ADS-B, which belongs to the field of aviation technologies. According to this method, after initializing population and acquiring an initial optimal solution, optimization parameters are firstly grouped randomly so that all beams form several significant uncovered regions. Then, grouping is performed by an adaptive grouping strategy based on the relative orientation between the mean center of the largest uncovered region and the direction of each beam, so that the parameters quickly converge to a full-coverage state within the half angle of the satellite. Finally, grouping is performed by a grouping strategy based on the aircraft density covered by each beam to obtain optimally the minimal update time interval under a full-coverage constraint.

Abstract: The present invention discloses a multi-beamforming optimization method for space-based ADS-B based on a coverage matrix. The method includes: calculating signal-to-noise ratios of received signals based on an ADS-B signal model and an air-space channel model; deriving the correct reception probability of ADS-B signals by a satellite with different signal-to-noise ratios and with different numbers of aircraft on the basis of analyzing a correct decoding probability and a collision probability; and in the case that the constraint of satellite coverage metric is satisfied, aiming at minimizing the update interval of position messages at the update probability of 95%, establishing a digital multi-beamforming optimization model for space-based ADS-B.

Abstract: The present invention provides a compound of formula or a pharmaceutical salt thereof, use, methods for its preparation are described.

Abstract: A mining mobile communication system includes a first subsystem configured for communication in a licensed frequency band.

Abstract: An EP4 antagonist represented by formula I, which specifically comprises a crystal form thereof, a pharmaceutically acceptable salt or crystal form thereof, a preparation method therefor, a composition containing same, and a medical use of a related compound.

Abstract: The present disclosure relates to an electric motor cooling arrangement including an end oil spray assembly arranged at both ends of a stator of an electric motor, being used to spray cooling oil towards a winding head of the stator to cool the winding head, and a water cooling assembly arranged to surround at least the core part of the stator, wherein cooling water circulates in the water cooling assembly to cool the core part of the stator.

Abstract: Disclosed is a movable foundation static load test apparatus, which includes a rack, a crawler traveling mechanism and a position adjusting mechanism. The rack is configured to place a balancing weight, the crawler traveling mechanism includes a frame fixedly connected with the rack and is configured to drive the rack to travel, the position adjusting mechanism has a movable stroke moving along the vertical direction, the rack has a movable stroke moving along the vertical direction, the position adjusting mechanism is configured to adjust the distance between the rack and a test object. The crawler traveling mechanism drives the rack to travel, after reaching a test point, the distance between the rack and the test object is adjusted by the position adjusting mechanism to carry out a static load test, the rack may be conveniently moved through the crawler traveling mechanism.

Abstract: The present invention relates to a tricyclic compound used as a GPR84 antagonist, and in particular relates to a tricyclic compound having a structure shown in formula I, and tautomers, stereoisomers, hydrates, solvates, pharmaceutically acceptable salts or prodrugs thereof; the definitions of the ring Cy, L1, R1 are as described in the present invention; the tricyclic compound has significant GPR84 antagonism, good pharmaceutical developability and high safety.

Abstract: A microdevice for monitoring a target analyte is provided. The microdevice can include a field effect transistor comprising a substrate, a gate electrode, and a microfluidic channel including graphene. The microfluidic channel can be formed between drain electrodes and source electrodes on the substrate. The microdevice can also include at least one aptamer functionalized on a surface of the graphene. The at least one aptamer can be adapted for binding to the target analyte. Binding of the target analyte to the at least one aptamer can alter the conductance of the graphene.

Abstract: A rotor includes a rotor shaft, having a rotation axis; a rotor body, fixed to the rotor shaft and formed of multiple stacked laminations. Magnet mounting grooves are provided in the rotor body, and multiple magnets are disposed in the magnet mounting grooves, with a gap formed between each magnet and an inner wall of the corresponding magnet mounting grooves. First and second end plates are respectively disposed at two ends of the rotor body along the rotation axis. A fluid cooling system includes a slot, disposed on one of the first end plate and second end plate, and located on a side of this end plate that faces towards the rotor body; a through-hole, disposed on the other of the first end plate and second end plate; and the gap. The slot, the gap and the through-hole are in fluid communication to form a cooling medium channel.

Abstract: A pyridopyrimidinone derivative as represented by formula I, and a tautomer, a stereoisomer, a hydrate, a solvate, a pharmaceutically acceptable salt thereof or a prodrug thereof. The pyridopyrimidinone derivative has a good SOS1 inhibitory effect.

Abstract: The present invention relates to a product forming method, a product, and a shoe. The product forming method comprises the following steps: (1) placing a film on a bottom mold, and fixing the film between the bottom mold and a middle frame; (2) placing an outer housing material on the film, and suctioning the film, so that the film is internally recessed in the direction of the bottom mold, and then performing first curing molding to obtain a molded outer housing; and (3) placing an inner liner material on the molded outer housing, performing second curing molding to obtain a molded inner liner, and demolding to obtain the product.

Abstract: A high anti-vibration gas density monitor is provided, including a monitor enclosure, a signal control mechanism, and an indication value display mechanism independent from the signal control mechanism which are provided in the monitor enclosure. The signal control mechanism includes at least one corrugated pipe, a sealed compensation chamber, a signal generator, and a signal regulation mechanism. The corrugated pipe is perpendicular to a side wall of a control casing. The monitor enclosure includes an independent sealed compartment used to mount the indication value display mechanism. The sealed compartment is filled with anti-vibration oil, or is hermetically filled with gas. The indication value display mechanism includes a Bourdon tube, a base, an end holder, a movement, a pointer, and a dial.

Abstract: The present disclosure provides a novel compound for effectively inhibiting the activity of CD73, a preparation method thereof, and use thereof in the preparation of drugs, and the novel compound is a compound represented by formula I, or a tautomer, stereoisomer, hydrate, solvate, pharmaceutically acceptable salt, or prodrug thereof.

Abstract: Provided are salts of a compound of formula (I) having an ATX inhibitory activity. The salts comprises inorganic acid salts or organic acid salts, and solid forms of the salts, such as crystal forms. The salts of the compound of formula (I) and their crystal forms according to the present disclosure have a good solubility, stability and hygroscopicity, and are more suitable for medicinal use. Moreover, their preparation methods are simple and convenient, and are suitable for large-scale production.

Abstract: The present disclosure provides a ZSM-35 molecular sieve and a preparation method therefor, an isomerization catalyst and a preparation method therefor, and an isomerization method. The preparation method for a ZSM-35 molecular sieve comprises: mixing a silicon source, an aluminum source, an alkali, a template agent and water, then adding a polyacrylamide thereto, and performing crystallization on same twice to obtain a ZSM-35 molecular sieve. The present disclosure further provides an isomerization catalyst prepared from the ZSM-35 molecular sieve and a preparation method therefor, and an isomerization method.

Abstract: The present disclosure provides a driving video recorder for an automotive, which includes: a housing having a side wall, a top wall with an air outlet, and a bottom wall with an air inlet; a first electric fan arranged on the bottom wall above the air inlet and in a vertical middle plane of the housing for directing outside air into the housing; two sets of lenses for image capturing arranged at the side wall and positioned symmetrically on both sides of the vertical middle plane of the housing; and heat generating electrical components provided within the housing. The driving video recorder according to the present disclosure has a symmetrically distributed lens structure ensuring system stability, reliability, and enhanced functionality.

Abstract: Provided are a novel compound that effectively antagonizes P2X3 receptor, a preparation method thereof, and use thereof in the preparation of drugs. The compound is a compound represented by Formula I, or a tautomer, a stereoisomer, a hydrate, a solvate, a pharmaceutically acceptable salt, or a prodrug thereof.

Abstract: The present disclosure provides a precision calibrating device and a precision calibrating method for a magnetorheological polishing device, which realize an automatic and quick calibration process. It is ensured that a polishing gap is kept within an allowable error range when the magnetorheological polishing device processes surfaces of different optical elements, thereby effectively controlling a removal function, reducing or eliminating surface residual errors after processing and low frequency errors and medium frequency errors introduced by insufficient trajectory precision of a mechanical arm, and improving a processing precision of the magnetorheological polishing device based on the mechanical arm.

Abstract: The present disclosure provides a novel compound effective in antagonizing EP4, which is a compound represented by Formula I, or a tautomer, stereoisomer, hydrate, solvate, pharmaceutically acceptable salt or prodrug of the compound represented by Formula I: wherein: R1 is selected from —CH3, —CHF2, and —CF3; R2 is selected from C2-C6 alkyl, C3-C6 cycloalkyl, C2-C6 halogen-substituted alkyl, C3-C6 halogen-substituted cycloalkyl; R3 is selected from hydrogen, halogen, C1-C2 alkyl, C1-C2 fluorine- or chlorine-substituted alkyl; R4 is selected from hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxyl, C1-C6 halogen-substituted alkyl, C1-C6 halogen-substituted alkoxyl.