Abstract: A reconfigurable antenna includes a first antenna and a second antenna. The first antenna is an omnidirectional antenna, and the second antenna surrounds the first antenna. The second antenna includes a plurality of antenna element groups. Each antenna element group includes a transmission cable, a switch, a first antenna element, and a second antenna element. The transmission cable is connected to the first antenna element and the second antenna element. The transmission cable is connected to a feedpoint. The switch is connected to a first point and a second point on the transmission cable. A sum of a length of antennas and transmission cables in an antenna element group is slightly greater than ½ wavelength (?1), where ?1 is a wavelength of an electromagnetic wave on an operating frequency of the first antenna.

Abstract: This application provides implementations related to lenses. In one implementation, a lens comprises a substrate layer and a metal layer, wherein at least one surface of the substrate layer is a concave surface or a convex surface; the metal layer exists on the at least one surface of the substrate layer; the metal layer comprises a metal part and a hollow-out part, and the metal part or the hollow-out part is presented by using a graphics array; the graphics array comprises a plurality of first rings, the first ring comprises a plurality of graphic units, and a larger ring encircles a smaller ring in the plurality of first rings; and at least one of the following are different: size of graphic units comprised in two adjacent first rings, rotation angle of graphic units comprised in two adjacent first rings, or two adjacent first intervals, wherein the first interval is an interval between the two adjacent first rings.

Abstract: A method and apparatus for device finding after network configuration are disclosed. The method for device finding includes: sending a message to a smart device in an Access Point (AP) mode, the message comprising information for connecting to a first router or AP; changing connection from the smart device to a network; performing a local scanning when connecting to the first router or AP; and performing a cloud scanning when the local scanning fails.

Abstract: A method of low-frequency seismic data enhancement for improving the characterization precision of a deep carbonate reservoir includes: first performing inversions on an input seismic data set to obtain the corresponding reflection coefficients and average seismic wavelet; then constructing a seismic wavelet with rich low-frequency information; and finally, performing convolution on the seismic wavelet with rich low-frequency information and the reflection coefficients to obtain seismic data with rich low-frequency information and enhanced low-frequency energy. In the present invention, changes of the seismic data in a work area in transverse and longitudinal directions are taken into consideration, and processing parameters can be quickly determined according to actual conditions of the work area to obtain an optimal processing effect.

Abstract: A smart antenna, an antenna feeder system, an antenna communications system, and an Access Point (AP) are provided. The smart antenna includes an antenna element array and an impedance transformation circuit. A feeding end of the antenna element array is connected to a first end of the impedance transformation circuit, a second end of the impedance transformation circuit is an input end of the smart antenna, and the input end of the smart antenna is connected to a feeder. The antenna element array can form a plurality of different beam shapes, and the impedance transformation circuit is configured to transform the different input impedance of the feeding end of the antenna element array into preset input impedance at the input end of the smart antenna.

Abstract: An antenna includes a first helical arm and a second helical arm. The first helical arm is wound clockwise along a longitudinal direction of an axis of the antenna, and the second helical arm is wound counterclockwise along the longitudinal direction of the axis of the antenna. The second helical arm and the first helical arm form at least one intersecting point, a first feeding point is disposed on the first helical arm, a second feeding point is disposed on the second helical arm, the first feeding point and the second feeding point are two points symmetrical relative to the axis of the antenna, and any intersecting point of the at least one intersecting point further forms a third feeding point, where the first feeding point and the second feeding point are connected to a first feeding port, and the third feeding point is connected to a second feeding port.

Abstract: Described are techniques for determining statistical properties of time series data. The techniques include a method comprising graphing, from time series data, a time series data graph. The method further comprises iteratively segmenting the time series data graph into respective pluralities of subgraphs using respective segmentation schemes until a first plurality of subgraphs generated by a first segmentation scheme exhibits a similarity between respective subgraphs of the first plurality of subgraphs satisfying a similarity threshold. The first segmentation scheme can be selected from: an equidistant segmentation scheme, a local extrema segmentation scheme, and a windowed segmentation scheme. The method further comprises associating a classification to the time series data based on the first segmentation scheme. The classification can be indicative of one selected from: stationarity of the time series data, periodicity of the time series data, and trending of the time series data.

Abstract: This application provides an antenna system and a wireless device, and pertains to the field of communications technologies. In this application, a decoupling resonator is connected to a first antenna, and a resonance frequency of the decoupling resonator is within an operating frequency band of a second antenna, so that the decoupling resonator can resonate within the operating frequency band of the second antenna. The decoupling resonator reduces coupling between the first antenna and the second antenna, and isolation between the first antenna and the second antenna is improved.

Abstract: The application relates to a communication method, apparatus, and system, a storage medium, and a terminal. The method includes: receiving first data from a first receiving device in multiple first devices of a first device type through a first network of a first network type, wherein the first data is received from a first client device by the first receiving device through a second network of a second network type, the first data is configured to control a first target device in multiple second devices of a second device type, and the first client device is beyond a communication range of the second devices; and sending the first data to a relay device in the second devices through a third network of a second network type, wherein the relay device is connected to the first target device through a fourth network of a third network type, and the first data is sent to the first target device by the relay device.

Abstract: This application provides a feed apparatus, a dual-band microwave antenna, and a dual-band antenna device. The feed apparatus includes a low-frequency feed and a high-frequency feed. The high-frequency feed is embedded into the low-frequency feed. The low-frequency feed includes a plurality of low-frequency array elements arranged in an array. The high-frequency feed includes a plurality of high-frequency array elements arranged in an array. At least one high-frequency array element is embedded into the low-frequency array element, and the low-frequency array element and each high-frequency array element embedded into the low-frequency array element have a common waveguide wall.

Abstract: The present disclosure is directed to methods and compositions for the prediction and treatment of immunotherapy—induced toxicities, as well as improved methods for the treatment of cancer with immunotherapies.

Abstract: A subdomain hybrid cellular automata method for solving car body thickness optimization includes an outer loop and an inner loop: the outer loop is to conduct crash finite element simulation analysis, calculate an output response, and update a cell internal energy density, and update a target mass using a penalty function method; the inner loop is mainly to adjust a cell thickness using a PID control strategy according to internal energy densities of a current cell and neighboring cells thereof, so that a current mass of the inner loop converges to the target mass; and finally the cell internal energy density distribution approaches a step target internal energy density function as much as possible. Step target internal energy density update rules are provided in the inner loop. Cell thickness update rules based on a PID control strategy are provided in the inner loop.

Abstract: An antenna includes a first helical arm and a second helical arm. The first helical arm is wound clockwise along a longitudinal direction of an axis of the antenna, and the second helical arm is wound counterclockwise along the longitudinal direction of the axis of the antenna. The second helical arm and the first helical arm form at least one intersecting point, a first feeding point is disposed on the first helical arm, a second feeding point is disposed on the second helical arm, the first feeding point and the second feeding point are two points symmetrical relative to the axis of the antenna, and any intersecting point of the at least one intersecting point further forms a third feeding point, where the first feeding point and the second feeding point are connected to a first feeding port, and the third feeding point is connected to a second feeding port.

Abstract: An antenna includes a first element, a second element, and a reactance-adjustable component. The first element receives an excitation current through an electrical connection to an antenna feeder, and the second element generates an induced current through electromagnetic induction of the first element. The reactance-adjustable component is disposed at an end of the first element close to a reference plane, and/or the reactance-adjustable component is disposed at an end of the second element close to a reference plane. The reference plane uses a connection point between the first element and the antenna feeder as an origin point and is perpendicular to an axial direction of the first element. The reactance-adjustable component has an adjustable reactance value and is configured to adjust a phase difference between an excitation current and an induced current, where the phase difference has an association relationship with a target angle of radiation of the antenna.

Abstract: A method of low-frequency seismic data enhancement for improving the characterization precision of a deep carbonate reservoir includes: first performing inversions on an input seismic data set to obtain the corresponding reflection coefficients and average seismic wavelet; then constructing a seismic wavelet with rich low-frequency information; and finally, performing convolution on the seismic wavelet with rich low-frequency information and the reflection coefficients to obtain seismic data with rich low-frequency information and enhanced low-frequency energy. In the present invention, changes of the seismic data in a work area in transverse and longitudinal directions are taken into consideration, and processing parameters can be quickly determined according to actual conditions of the work area to obtain an optimal processing effect.

Abstract: The disclosure discloses an ultrasonic-assisted pretreatment method for extraction of multiple steroid hormones in a sediment, including the following steps: (1) lyophilizing the sediment, grinding the sediment, and passing the ground sediment through a 40-60-mesh sieve; (2) placing the sample obtained in step (1) in a container; (3) adding an extractant to the container in step (2), shaking the mixture for 15 s-30 s, centrifuging the mixture to collect an supernatant after ultrasonication, and repeating extraction three times; where the extractants used in the three times of extraction are two of methanol, acetonitrile and acetone; and (4) after mixing the supernatants of the three times of extraction obtained in step (3), concentrating the mixture under a nitrogen flow at 20-30° C., passing the concentrated mixture through a filter, and performing detection. By using the method of the disclosure, the maximum recovery can be up to 100%.

Abstract: The present invention relates to a smart equipment, a method used by a smart equipment, and a smart lamp. The smart equipment comprises a WiFi module and a Bluetooth Low Energy (BLE) module. The BLE module comprises a microcontroller unit (MCU). The WiFi module wirelessly downloads an OTA file. The microcontroller unit divides the OTA file into at least one packages. The Bluetooth Low Energy (BLE) module OTA upgrades a plurality of devices in a mesh network simultaneously by broadcasting the at least one packages.

Abstract: A subdomain hybrid cellular automata method for solving car body thickness optimization includes an outer loop and an inner loop: the outer loop is to conduct crash finite element simulation analysis, calculate an output response, and update a cell internal energy density, and update a target mass using a penalty function method; the inner loop is mainly to adjust a cell thickness using a PID control strategy according to internal energy densities of a current cell and neighboring cells thereof, so that a current mass of the inner loop converges to the target mass; and finally the cell internal energy density distribution approaches a step target internal energy density function as much as possible. Step target internal energy density update rules are provided in the inner loop. Cell thickness update rules based on a PID control strategy are provided in the inner loop.

Abstract: The present disclosure relates to coaxial dual-band antennas. One example antenna includes a waveguide tube, a ring groove, and a high frequency feed. The waveguide tube has a tubular structure and is configured to transmit a first electromagnetic wave. The ring groove whose opening direction is the same as an output direction of the first electromagnetic wave is on a wall of the waveguide tube. A frequency of the first electromagnetic wave is lower than a frequency of an electromagnetic wave transmitted by the high frequency feed. The high frequency feed is located in the waveguide tube and has a same axis with the waveguide tube.

Abstract: The application relates to a device control method and apparatus, a storage medium, a processor, and a terminal. A device has a WIFI module for WIFI connection and a Bluetooth module for Bluetooth connection. The device control method includes: acquiring a network module status of the device, wherein the network module status indicates whether the WIFI module or Bluetooth module of the device is enabled; if the WIFI module and the Bluetooth module are enabled, detecting wireless data packet features in a wireless network environment where the device is located; and controlling the device according to the detected wireless data packet features so that one of the WIFI module and the Bluetooth module is enabled and the other one of the WIFI module and the Bluetooth module is disabled. The technical solution of the application causes a WIFI and Bluetooth dual-mode device to intelligently select an operating mode, and avoids interference caused by the coexistence of radio frequency signals.