Abstract: The present disclosure discloses a distributed antenna system. The DAS includes a signal source, a first signal generator, a first passive mixer, and a first antenna. The first signal generator is configured to: generate a first local-frequency signal, and send it to the first passive mixer by using a passive DAS line. The first passive mixer is configured to receive the first local-frequency signal, and a downlink radio frequency signal having a second radio frequency band. The first passive mixer is further configured to: perform frequency mixing processing on the received downlink radio frequency signal having the second radio frequency band by using the first local-frequency signal, to form a first downlink radio frequency signal having a first radio frequency band, and then send it to the first antenna. The first antenna is configured to transmit the received first downlink radio frequency signal having the first radio frequency band.

Abstract: A method for controlling an unmanned aerial vehicle (UAV) includes: determining, by a processor, a change in a body portion of a user based on acquired images that include the body portion of the user; determining, by the processor, control data of the UAV based on the change in the body portion; and controlling, by the processor, the UAV based on the control data.

Abstract: This application relates to a scheduling method and a device. In the scheduling method, a base station sends, at a first moment, uplink grant (UL GRANT) information to a terminal that is to perform uplink data transmission; the base station sends, at a second moment, downlink data to a terminal that is determined by the base station and that is to perform downlink data transmission, where the second moment is a moment at which the terminal that is to perform uplink data transmission sends uplink data after receiving the uplink grant information at the first moment.

Abstract: Specialized computing systems, devices, interfaces and methods facilitate the simulation of downhole milling procedures such as wellbore departure milling procedures. Computing systems, devices, interfaces and methods enable a user to design and select milling components and procedures to be compared and simulated. Various milling parameters, such as milling tool parameters, whipstock parameters, and wellbore casing parameters may be accessed and selectably modified with milling and simulation interfaces to define and control the simulated milling procedures. Different types of output are selectably rendered to reflect various aspects of the simulated milling procedures.

Abstract: A method of manufacturing FinFET semiconductor devices in memory regions and logic regions includes the steps of forming a first gate material layer on a substrate and fins, patterning the first gate material layer to form a control gate, forming a second gate material layer on the substrate and fins, performing an etch process to the cell region so that the second gate material layer in the cell region is lower than the second gate material layer in the peripheral region, patterning the second gate material layer to form a select gate in the cell region and a dummy gate in the logic region respectively.

Abstract: A method of manufacturing FinFET semiconductor devices in memory regions and logic regions includes the steps of forming a first gate material layer on a substrate and fins, patterning the first gate material layer to form a control gate, forming a second gate material layer on the substrate and fins, performing an etch process to the cell region so that the second gate material layer in the cell region is lower than the second gate material layer in the peripheral region, patterning the second gate material layer to form a select gate in the cell region and a dummy gate in the logic region respectively.

Abstract: A group of arabinose isomerases are disclosed that provide effective amounts of activity for use of arabinose in production of ethanol, when expressed in yeast cells expressing the other enzymes of an arabinose utilization pathway. The group of arabinose isomerases represents a clade of a phylogenetic tree, having a distinguishing conserved amino acid sequence motif. Other useful arabinose isomerases are also disclosed.

Abstract: A blade icing state identification method and apparatus for a wind generator set are disclosed. The method includes setting a preset wind speed threshold and a preset rotating speed threshold, and setting the preset rotating speed threshold as a lower limit value of a maximum limited rotating speed of the wind generator set operating under a limited power condition; comparing a current wind speed and a current rotating speed of the wind generator set with the preset thresholds respectively; progressively increasing a blade icing possibility index when the current wind speed is greater than the preset wind speed threshold and the current rotating speed of the wind generator set is smaller than the preset rotating speed threshold, and otherwise, progressively decreasing the blade icing possibility index; and determining that blades are in an icing state when the blade icing possibility index is greater than a preset index.

Abstract: An unmanned aerial vehicle (UAV), a UAV landing control device and method. The UAV landing control method includes: receiving a trigger command; starting to monitor under control of the trigger command and outputting monitoring information based on a landing platform below the UAV, where the UAV has one or more rotors; and determining whether to control the one or more rotors of the UAV to stop rotation based on the monitoring information.

Abstract: A manufacturing method of a semiconductor structure includes the following steps. A first polysilicon layer is formed on a substrate. A planarization process to the first polysilicon layer is performed. A first etching back process to the first polysilicon layer is performed after the planarization process. A second etching back process to the first polysilicon layer is performed after the first etching back process. A first wet clean process to the first polysilicon layer is performed after the first etching back process and before the second etching back process.

Abstract: An unmanned aerial vehicle (UAV) includes an image capturing module disposed on the UAV, and configured to capture image data; and a controller chip coupled to the image capturing module to receive and process the image data; and the controller chip being configured to control the flight of the UAV.

Abstract: A manufacturing method of a semiconductor structure includes the following steps. A first polysilicon layer is formed on a substrate. A planarization process to the first polysilicon layer is performed. A first etching back process to the first polysilicon layer is performed after the planarization process. A second etching back process to the first polysilicon layer is performed after the first etching back process. A first wet clean process to the first polysilicon layer is performed after the first etching back process and before the second etching back process.

Abstract: A dual-redundancy flight control system, comprises a master control system and a secondary control system. The master control system comprises a master controller, and further comprises a first inertial measurement unit (IMU), a first magnetic compass unit, and a first satellite navigation unit, each of which being connected to the master controller respectively. The secondary control system comprises a secondary controller, and further comprises a second IMU, a second magnetic compass unit, and a second satellite navigation unit, each of which being connected to the secondary controller respectively. The secondary controller is connected to the master controller via a data bus, and the master controller is connected to an electronic speed regulator of an aircraft for controlling the flight actions of the aircraft.

Abstract: A method and an apparatus for controlling an unmanned aerial vehicle (UAV) are provided. The UAV comprises at least one rotor. The method includes: receiving a take-off preparatory signal instructing the UAV to enter into a take-off preparatory state; controlling the at least one rotor of the UAV to rotate at a preset rotation speed in response to the take-off preparatory signal, wherein the preset rotation speed is smaller than a rotation speed that enables the UAV to hover in the air; and controlling the UAV to enter into a hovering mode under a predetermined condition, wherein the UAV is controlled to hover at a predetermined height in the hovering mode.

Abstract: A gimbal includes a base and a fixing support rotatably provided on the base, wherein the fixing support includes a first mounting seat and a second mounting seat, and the second mounting seat is provided with an inner cavity therein. An unmanned aerial vehicle including a gimbal is also provided.

Abstract: The present invention provides a memory cell, which includes a substrate, a gate dielectric layer, a patterned material layer, a selection gate and a control gate. The gate dielectric layer is disposed on the substrate. The patterned material layer is disposed on the substrate, wherein the patterned material layer comprises a vertical portion and a horizontal portion. The selection gate is disposed on the gate dielectric layer and atone side of the vertical portion of the patterned material layer. The control gate is disposed on the horizontal portion of the patterned material layer and at another side of the vertical portion, wherein the vertical portion protrudes over a top of the selection gate. The present invention further provides another embodiment of a memory cell and manufacturing methods thereof.

Abstract: Embodiments of the present invention disclose a signal transmission method and apparatus. The apparatus includes an LTE-U processing unit, a Wi-Fi processing unit, an antenna unit, and a coupling apparatus. After receiving an LTE-U signal sent by the LTE-U processing unit, the coupling apparatus divides the LTE-U signal into a first LTE-U signal to be sent to the antenna unit and a second LTE-U signal to be sent to the Wi-Fi processing unit, so that the Wi-Fi processing unit does not send a Wi-Fi signal; and after receiving a Wi-Fi signal sent by the Wi-Fi processing unit, the coupling apparatus divides the Wi-Fi signal into a first Wi-Fi signal to be sent to the antenna unit and a second Wi-Fi signal to be sent to the LTE-U processing unit, so that the LTE-U processing unit does not send an LTE-U signal.

Abstract: The present disclosure discloses a distributed antenna system. The DAS includes a signal source, a first signal generator, a first passive mixer, and a first antenna. The first signal generator is configured to: generate a first local-frequency signal, and send it to the first passive mixer by using a passive DAS line. The first passive mixer is configured to receive the first local-frequency signal, and a downlink radio frequency signal having a second radio frequency band. The first passive mixer is further configured to: perform frequency mixing processing on the received downlink radio frequency signal having the second radio frequency band by using the first local-frequency signal, to form a first downlink radio frequency signal having a first radio frequency band, and then send it to the first antenna. The first antenna is configured to transmit the received first downlink radio frequency signal having the first radio frequency band.

Abstract: Embodiments of the present application disclose a data transmission method, comprising: separately establishing, by a node, a connection to a macro base station and a small cell, where the node, the macro base station, and the small cell are located in a same access network, and the connection is an X2 connection or a user-defined logical connection; and scheduling, by the node, coordinated data, where the coordinated data is data cooperatively transmitted by the macro base station and the small cell for user equipment. In the present application, the node is additionally deployed in the access network, and the node schedules coordinated data in a macro-micro coordination process, therefore the delay of transmission between the macro base station and the small cell is shortened, and the macro-micro coordination performance is improved.

Abstract: The present disclosure proposes a method and an apparatus for controlling video shooting and an unmanned aerial vehicle. The method for controlling video shooting includes: receiving a triggering instruction; responding to the triggering instruction so as to control an UAV to enter into an automatic shooting mode; and generating flight route information corresponding to a predetermined shooting pattern under the automatic shooting mode; controlling the UAV to fly according to the flight route information, and controlling a video shooting apparatus provided on the UAV to shoot under the predetermined shooting pattern while the UAV is flying according to the flight route information. The method, the apparatus and the unmanned aerial vehicle proposed by the present disclosure enable manual operations to be omitted during shooting, so that the shooting performed by the UAV will be fully automatic, upgrading user experience.