Abstract: A monitoring system based on a digital converter station includes a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side; the monitoring terminal at each level includes a communication module, a human-machine interaction module, a device status monitoring module, a device alarm management module, a video fusion processing module, and a data transmission adjustment and control module.

Abstract: Apparatuses include (among other components) a first gain device connected to receive an initial voltage, a second gain device in series with the first gain device and connected to receive output of the first gain device, differential gain devices connected to receive outputs from the first gain device and the second gain device (the differential gain devices provide opposite voltage outputs from the apparatus) and high-frequency compensation feed-forward paths connected to the first gain device and the second gain device.

Abstract: A method of wireless communication includes receiving, at a first communication node, information that includes one or more parameters indicating a time-domain characteristic of one or more interfered symbols due to a remote interference between the first communication node and a second communication node. The method also includes performing, by the first communication node, subsequent communications based on the information.

Abstract: A main stream reservoir ecological modulation method considering incoming water from interval tributaries is provided. The method determines the contribution ratio of the incoming water from interval tributaries to first-day's water rising in a high-flow surge process and when to start ecological modulations of spawning ground sections, determines a river course routing method after a main stream and its tributaries joining and calibrating parameters, based on past hydrological data, performing river flow calculation on the discharge volume of upstream reservoirs and the flow after interval tributaries joining, and determines a main stream reservoir ecological modulation mode considering incoming water from interval tributaries.

Abstract: The present invention relates to a variable-flow-path air valve for water hammer prevention and a design method. The variable-flow-path air valve includes a valve body with a top provided with an air intake-exhaust port. A ball valve seat and a floating ball are arranged below the air intake-exhaust port. The valve body is provided with at least one swing check valve configured to be opened inward. The swing check valve includes: a swing valve disc connected to a valve body hinge, a variable-flow-path air inlet controlled by the swing valve disc to open and close, a device for limiting the opening degree of the swing valve disc, and a sealing device. In the present invention, the air valve takes in air through the air intake-exhaust port and the variable flow path, and discharges air only through the air intake-exhaust port.

Abstract: A main stream reservoir ecological modulation method considering incoming water from interval tributaries is provided. The method determines the contribution ratio of the incoming water from interval tributaries to first-day's water rising in a high-flow surge process and when to start ecological modulations of spawning ground sections, determines a river course routing method after a main stream and its tributaries joining and calibrating parameters, based on past hydrological data, performing river flow calculation on the discharge volume of upstream reservoirs and the flow after interval tributaries joining, and determines a main stream reservoir ecological modulation mode considering incoming water from interval tributaries.

Abstract: A method for determining flow velocity distribution in the roughness sublayer is provided, which uses the experimental device that includes a variable-slope circulating flume system and a flow-measuring system, the variable-slope circulating flume system is used to study flow in the roughness sublayer, and the flow-measuring system is used to measure flow velocity in each zone in the flume. In the variable-slope circulating flume, the method according to the invention uses cylindrical aluminum rods to simulate large-scale roughness elements, and the submergence, the average bulk flow velocity and the distribution density of roughness elements are changed.

Abstract: The present invention relates to a variable-flow-path air valve for water hammer prevention and a design method. The variable-flow-path air valve includes a valve body with a top provided with an air intake-exhaust port. A ball valve seat and a floating ball are arranged below the air intake-exhaust port. The valve body is provided with at least one swing check valve configured to be opened inward. The swing check valve includes: a swing valve disc connected to a valve body hinge, a variable-flow-path air inlet controlled by the swing valve disc to open and close, a device for limiting the opening degree of the swing valve disc, and a sealing device. In the present invention, the air valve takes in air through the air intake-exhaust port and the variable flow path, and discharges air only through the air intake-exhaust port.

Abstract: The present invention relates to a method for calculating a head loss coefficient and branch pipe flow distribution of a multi-point water intake. The method includes the following steps: inputting and determining a structure and size information of the multi-point water intake; determining a head loss coefficient; determining a head loss coefficient form of a confluence port; pre-estimating or adjusting a trial flow; performing trial calculation on the head loss coefficient of each branch pipe; comparing the head losses calculated by two flow paths; and carrying out overall calculation. According to the present invention, the flow of each branch pipe is adjusted and the head loss coefficient is repeatedly calculated by utilizing iterative calculation of the head loss coefficients of the flows in two directions, so that the head loss and the flow distribution proportion can be finally and accurately calculated.

Abstract: Apparatuses include (among other components) a first gain device connected to receive an initial voltage, a second gain device in series with the first gain device and connected to receive output of the first gain device, differential gain devices connected to receive outputs from the first gain device and the second gain device (the differential gain devices provide opposite voltage outputs from the apparatus) and high-frequency compensation feed-forward paths connected to the first gain device and the second gain device.

Abstract: Amplifier devices includes a first amplifier connected to receive an input voltage. The first amplifier outputs an internal voltage. These structures also include a second amplifier having an input node connected to receive the internal voltage and an output node outputting an output voltage. A resistive feedback loop is connected to the input node and the output node of the second amplifier. A first cross-coupled bandwidth boosting stage is connected to the input node of the second amplifier and a second cross-coupled bandwidth boosting stage connected to the output node of the second amplifier. The cross-coupled bandwidth boosting stages form a distributed differential positive feedback structure.

Abstract: A media information display method and apparatus, and a computer storage medium are provided. The method includes obtaining media information materials; sequencing the media information materials, and generating first media information based on the sequenced media information materials, the media information materials in the first media information being combined and arranged; controlling a first part of the first media information to be displayed in a first media information display window; and controlling a second part of the first media information to be displayed in the first media information display window in response to an operation on the first media information display window, the first part of the first media information being different from the second part of the first media information.

Abstract: A media information display method and apparatus, and a computer storage medium are provided. The method includes obtaining media information materials; sequencing the media information materials, and generating first media information based on the sequenced media information materials, the media information materials in the first media information being combined and arranged; controlling a first part of the first media information to be displayed in a first media information display window; and controlling a second part of the first media information to be displayed in the first media information display window in response to an operation on the first media information display window, the first part of the first media information being different from the second part of the first media information.