Abstract: An automatic synchronous loading system for a space structure lattice includes a liquid storage tank filled with loading liquid, where the liquid storage tank is connected with a main liquid inlet pipe and a main liquid outlet pipe; a plurality of branch liquid tanks, where each branch liquid tank is connected to the liquid storage tank, and each branch liquid tank corresponds to at least one loading node; each branch liquid tank is connected with a liquid inlet pipe and a liquid outlet pipe, each liquid inlet pipe is communicated with the main liquid inlet pipe, and each liquid outlet pipe is communicated with the main liquid outlet pipe; and regulator valves, where each liquid inlet pipe and each liquid outlet pipe are connected with the regulator valves.

Abstract: An L-shaped shear wall module including an L-shaped outer pattern plate, an L-shaped inner pattern plate, and connectors connected between the L-shaped outer pattern plate and the L-shaped inner pattern plate. The L-shaped outer pattern plate 100 and the L-shaped inner pattern plate 200 are arranged in parallel to each other. The L-shaped inner pattern plate includes a first inner pattern plate and a second inner pattern plate which are perpendicular to each other. A corner transition block is disposed at a corner of the L-shaped inner pattern plate. The corner transition block has a protruding surface protruding towards the L-shaped outer pattern plate. The protruding surface of the corner transition block and the inner surface of the L-shaped outer pattern plate jointly enclose a concreting cavity at the corners for concreting reinforced concrete. The present application also provides a shear wall and a construction method thereof.

Abstract: Example methods and apparatus for switching an analog beam are described. One example method includes transmitting a data channel by a terminal by using a first analog beam. The terminal determines that a second analog beam is a target beam to be switched to. The terminal transmits a related signal of the data channel by using the second analog beam. The terminal transmits a data channel by using the first analog beam. The terminal switches from the first analog beam to the second analog beam to transmit the data channel in response to determining that a specified condition is met.

Abstract: An L-shaped shear wall module including an L-shaped outer pattern plate, an L-shaped inner pattern plate, and connectors connected between the L-shaped outer pattern plate and the L-shaped inner pattern plate. The L-shaped outer pattern plate 100 and the L-shaped inner pattern plate 200 are arranged in parallel to each other. The L-shaped inner pattern plate includes a first inner pattern plate and a second inner pattern plate which are perpendicular to each other. A corner transition block is disposed at a corner of the L-shaped inner pattern plate. The corner transition block has a protruding surface protruding towards the L-shaped outer pattern plate. The protruding surface of the corner transition block and the inner surface of the L-shaped outer pattern plate jointly enclose a concreting cavity at the corners for concreting reinforced concrete. The present application also provides a shear wall and a construction method thereof.

Abstract: Example methods and apparatus for switching an analog beam are described. One example method includes transmitting a data channel by a terminal by using a first analog beam. The terminal determines that a second analog beam is a target beam to be switched to. The terminal transmits a related signal of the data channel by using the second analog beam. The terminal transmits a data channel by using the first analog beam. The terminal switches from the first analog beam to the second analog beam to transmit the data channel in response to determining that a specified condition is met.

Abstract: A blind spectrum sensing method and device based on fast Fourier transform. The method comprises: the spectrum sensing device receives a signal on an authorized spectrum band, calculates an autocorrelation coefficient of the received signal after sampling and filtering same, then performs a fast Fourier transform of the autocorrelation coefficient, acquires the modulus of the transform result, constructs determination variables on the basis of the modulus, and determine whether or not a signal of an authorized user is present. The method and device have the advantages of low calculation complexity, obviated need for authorization information characteristic, and insensitivity towards noise uncertainty, and are of great performance.

Abstract: A blind spectrum sensing method and device based on fast Fourier transform. The method comprises: the spectrum sensing device receives a signal on an authorized spectrum band, calculates an autocorrelation coefficient of the received signal after sampling and filtering same, then performs a fast Fourier transform of the autocorrelation coefficient, acquires the modulus of the transform result, constructs determination variables on the basis of the modulus, and determine whether or not a signal of an authorized user is present. The method and device have the advantages of low calculation complexity, obviated need for authorization information characteristic, and insensitivity towards noise uncertainty, and are of great performance.