Abstract: A method may include identifying a time window of a procedure. The method may also include obtaining operational information of the time window. The operational information may include a limit of pulse repetition frequency (PRF) acceleration and a plurality of preliminary radio frequency (RF) PRFs. The method may also include determining a plurality of updated RF PRFs by updating the plurality of preliminary RF PRFs. A rate of variation between any two adjacent updated RF PRFs may be less than or equal to the limit of PRF acceleration. The method may also include causing an RF source to generate electromagnetic waves at the plurality of updated RF PRFs in the time window.

Abstract: A main and auxiliary alloy-based neodymium-iron-boron magnet material and the preparation method thereof. The raw material composition for the main and auxiliary alloy-based neodymium-iron-boron magnet material includes a main alloy raw material and an auxiliary alloy raw material, wherein the mass percentage of the auxiliary alloy raw material in the raw material composition for the main and auxiliary alloy-based neodymium-iron-boron magnet material is 1.0-15.0 mass %. For the main and auxiliary alloy-based neodymium-iron-boron magnet material prepared by using the raw material composition, the coercivity is increased while high remanence is ensured, and the preparation method therefor can be suitable for engineering applications.

Abstract: A multi-source domain adaptation model by aligning partial features includes a general feature extraction module, a feature selection module for partial feature extraction with the dedicated loss function, three partial feature alignment losses, and two classifiers for adversarial training, where the three partial feature alignment losses include an intra-class partial feature alignment loss, an inter-domain partial feature alignment loss, and an inter-class partial feature alignment loss. With the partial features extracted by the general feature extraction module and the feature selection module following three different partial feature alignment losses, the model is capable of clustering the samples from the identical categories and isolating samples from distinct classes.

Abstract: The present invention belongs to the technical field of disaster prevention and reduction of transmission lines, and provides a quasi-static calculation method for lateral unbalanced force of transmission lines. The present invention can quantify significant unbalanced force caused by a failed tower to an adjacent tower, thus to quantitatively evaluate cascading failure risk of transmission lines. The present invention does not need a lot of iteration, and can parametrically reveal influence of various factors on unbalanced force. The present invention quantifies influence of large deformation effect of a conducting wire on wind load, and at the same time, wind load of the conducting wire is corrected by the trapezoidal equivalent wind pressure proposed, which avoids wind load calculation error of the conducting wire caused by a relatively large vertical height difference, better reflects actual mechanical state of the lines, and optimizes existing wind load calculation method of transmission lines.

Abstract: A foldable windproof unit, a large-span windproof net structure thereof, and a windproof method are disclosed. The foldable windproof unit comprises a flexible windproof net, towers arranged at intervals, and a load-bearing rope erected on the two towers. The tower on one side is provided with a horizontal pulley assembly, and the tower on the other side is provided with two vertical pulleys. The top edge of the flexible windproof net is slidably connected to the load-bearing rope by means of a plurality of hanging structures. The foldable windproof unit further comprises a traction rope, the traction rope is arranged on the horizontal pulley assembly in a sleeving manner, and the two free ends of the traction rope extend to respectively bypass the two vertical pulleys and are connected to winding mechanism. The hanging structure close to the tower on one side is fixedly connected to the traction rope.

Abstract: Embodiments of this application provide a chip and a manufacturing method thereof, and an electronic device, and belong to the field of chip heat dissipation technologies. The chip includes a die and a thermal conductive sheet. An active surface of the die is connected to the thermal conductive sheet by using a first bonding layer. Heat generated at a part with a relatively high temperature on the active surface of the die can be quickly conducted and dispersed by using the thermal conductive sheet, so that temperatures on the active surface are evenly distributed to avoid an excessively high local temperature of the chip, thereby preventing running of the chip from being affected.

Abstract: An axial displacement amplified eddy current damper is disclosed. The axial movement of a slide bar is converted into the rotation of copper sheets and generates eddy current for energy consumption. The copper sheets are rotated and amplified by adjusting the sizes of gears. The short displacement of the slide bar can cause a large angle rotation of the copper sheets, so that energy consumption efficiency is high. The damping parameter can be adjusted by adjusting the magnetic field strength of permanent magnets, the thickness of the copper sheets and the distance from the copper sheets to the permanent magnets. The permanent magnets are adopted to provide continuous magnetic field sources, without external energy, thereby generating long-term and stable vibration reduction effect.

Abstract: --The present invention belongs to the technical field of disaster prevention and reduction of transmission lines, and provides a quasi-static calculation method for lateral unbalanced force of transmission lines. The present invention can quantify significant unbalanced force caused by a failed tower to an adjacent tower, thus to quantitatively evaluate cascading failure risk of transmission lines. The present invention does not need a lot of iteration, and can parametrically reveal influence of various factors on unbalanced force. The present invention quantifies influence of large deformation effect of a conducting wire on wind load, and at the same time, wind load of the conducting wire is corrected by the trapezoidal equivalent wind pressure proposed, which avoids wind load calculation error of the conducting wire caused by a relatively large vertical height difference, better reflects actual mechanical state of the lines, and optimizes existing wind load calculation method of transmission lines.

Abstract: The present invention discloses a coupling beam eddy current damper with shear displacement amplification. The coupling beam eddy current damper with shear displacement amplification comprises a rigid rod, rotating shafts, a pin column, pins, levers, screws, thread sleeves, copper sheets, permanent magnet components, a steel structural component, balls, ball supports and an outer shell. When vibration occurs, coupling beams on both sides of the damper are relatively vertically displaced; at this moment, two levers move up and down relative to the rigid rod; the movement causes the screws and the copper sheets to rotate; the copper sheets rotate in a magnetic field, then induced electromotive force will generates inside the magnetic field, thereby generating eddy current in the copper sheets. The eddy current effect will produce a damping force that impedes the rotation of the copper sheets.

Abstract: The present invention belongs to the field of monitoring technology and signal analysis of lattice tower structures, and discloses a horizontal two-dimensional displacement reconstruction method for a lattice tower structure based on multi-source heterogeneous data fusion. a lattice tower is simplified into a thin-walled three-dimensional variable section cantilever beam, a two-dimensional strain-displacement mapping method is used to calculate the horizontal two-dimensional displacement with low sampling rate, and finally a multi-rate Kalman filter algorithm is used to fuse the displacement with horizontal two-dimensional acceleration to obtain the horizontal two-dimensional displacement with high sampling rate. A data fusion method of the present invention needs less sensors, is simple in calculation process and accurate in calculation results, and has strong operability and practicability.

Abstract: The present invention belong to the technical field of lattice tower structure monitoring, and discloses a displacement reconstruction method for a lattice tower structure based on improved mode superposition.

Abstract: The present invention provides methods of synthesizing D-?-methyldopa and L-?-methyldopa.

Abstract: Determining coordinates and an initial coordinate system of simulation points according to structural drawings, and transforming the coordinate system so that Y axis is parallel to the wind direction, to obtain a 3D model of N structural simulation points; projecting all the simulation points of the 3D model onto a target 2D plane, and transforming the simulation points into projection points on the 2D plane; calculating the delay time of the wind speed, that is, the time required to move from each point to the projection points on the target plane; using a 2D coherence function to consider the spatial correlation of different simulation points in horizontal and vertical directions; generating fluctuating wind speed by using harmony superposition method; and obtaining the wind speed time history of all the points by using the delay time.

Abstract: An electronic device. An antenna module of this electronic device includes a plurality of antenna branches; a common feed structure is disposed between the plurality of antenna branches; the plurality of antenna branches are divided into a first group of antenna branches and a second group of antenna branches; the first group of antenna branches and the second group of antenna branches respectively correspond to different communication bands; and the common feed structure and the first group of antenna branches are disposed on an inner surface of a housing of the electronic device, and the second group of antenna branches are disposed on an outer surface of the housing of the electronic device.

Abstract: An antenna module of the electronic device includes a first radiator and a second radiator. The first radiator and the second radiator respectively correspond to different communication frequency bands, and the first radiator includes: a first sub-radiator, a second sub-radiator, a first connection portion, and a second connection portion. A common feeding structure is disposed between the first sub-radiator and the second radiator, and the first sub-radiator is connected to the second sub-radiator through the first connection portion and the second connection portion. The common feeding structure and the first sub-radiator are disposed on a non-metallic area of an inner side surface of a housing of the electronic device, the second sub-radiator is disposed on a non-metallic area of an outer surface of the housing, and the second radiator is disposed on a non-metallic area of the inner side surface or a non-metallic area of the outer surface.

Abstract: Techniques for managing energy use of a computing deployment are provided. In one embodiment, a computer system can establish a performance model for one or more components of the computing deployment, where the performance model models a relationship between one or more tunable parameters of the one or more components and an end-to-end performance metric, and where the end-to-end performance metric reflects user-observable performance of a service provided by the computing deployment. The computer system can further execute an algorithm to determine values for the one or more tunable parameters that minimize power consumption of the one or more components, where the algorithm guarantees that the determined values will not cause the end-to-end performance metric, as calculated by the performance model, to cross a predefined threshold. The computer system can then enforce the determined values by applying changes to the one or more components.

Abstract: A method of transmitting data is provided. The method of transmitting data includes transmitting, to a user equipment (UE), information on frequency domain resources of at least one subband on which carrier sensing is to be performed, performing carrier sensing on the at least one subband, and allocating idle resources within one or more subbands to the UE, and transmitting to the UE control information indicating the resources allocated to the UE. The disclosure also provides a method of transmitting a HARQ-ACK, a method of transmitting an OFDM symbol, a base station, a UE, and a computer readable medium.

Abstract: A portable massager includes a housing, a first connecting shaft, a second connecting shaft, a supporting rod, a supporting arm, and a massage device. The housing includes an upper cover and a base. The upper cover and the base cooperatively define a receiving space. Two spaced apart massage grooves are recessed from the upper cover toward the base and are each in air communication with the receiving space. The first connecting shaft and the second connecting shaft are disposed on a bottom surface of the base. An end of the supporting rod is rotatably connected to the base through the first connecting shaft. An end of the supporting arm is rotatably connected to the base through the second connecting shaft. The massage device is arranged in the receiving space and a portion of the massage device protrudes from the receiving space toward the massage grooves.

Abstract: The present invention belongs to the technical field of energy consumption and vibration reduction of assembled building structures, and provides an energy-consuming connecting device for a prefabricated assembled wall. The present invention provides a normal connection function between walls, and also has the functions of energy consumption and vibration reduction. A used viscoelastic material can provide energy consumption and weaken the cold and hot bridge effect, which is beneficial to building thermal insulation. Meanwhile, the energy-consuming connecting device for the prefabricated assembled wall can be connected with a prefabricated wall in advance, which can be carried out at the same time as the wall is inserted during construction, thereby effectively increasing the construction efficiency. Through the design of clamping groove devices, the wall can be connected firmly and reliably while generating displacement and consuming energy.

Abstract: The present invention provides methods of synthesizing D-?-methyldopa and L-?-methyldopa.