Abstract: A moving part of a maglev train, comprising two levitation frames that are arranged at an interval along the direction of travel, the two levitation frames being connected by means of a vertical beam; a peripheral wall of the vertical beam provided with a slot that may reduce the torsional rigidity thereof, being capable of reducing the torsional rigidity of the traditional vertical beam so as to reduce the coupling effect between the two levitation frames that are connected by means of the vertical beam, thereby greatly reducing the difficulty and energy consumption of levitation control. The levitation frames and the train body are provided therebetween with a vertical shock absorber and a horizontal absorber having suitable damping values, the levitation frames and the train body are provided therebetween with horizontal stoppers and vertical stoppers which may prevent excessive horizontal movement, rollover and overturning.

Abstract: A heat exchanger coil and a heat exchanger having the same. The heat exchanger coil includes: a plurality of flat tubes, each flat tube having a length direction oriented along a vertical direction; and a plurality of fins, in which each fin is disposed between adjacent flat tubes and includes a plurality of fin units arranged along the length direction of the flat tube and sequentially connected into a corrugated shape, each fin unit has a windward end portion and a leeward end portion opposite to each other in a width direction of the flat tube, and at least one end portion of the windward end portion and the leeward end portion of each fin unit extends beyond the plurality of flat tubes along the width direction of the flat tube and is provided with a drain hole.

Abstract: A fin and a heat exchanger having the fin, wherein the fin includes a sheet body. The sheet body includes a plurality of cooling sheet units arranged along a longitudinal direction of the sheet body. Each cooling sheet unit includes a windward zone, a main heat exchange zone and a leeward zone arranged along a transverse direction of the sheet body. The windward zones of adjacent cooling sheet units are connected to each other. A flat tube groove extends between the leeward zone and the main heat exchange zone of one of the adjacent cooling sheet units and the leeward zone and the main heat exchange zone of the other of the adjacent cooling sheet units. Each cooling sheet unit is provided with a plurality of protrusions spaced apart from each other.

Abstract: A heat exchanger coil and a heat exchanger having the same. The heat exchanger coil includes: a plurality of flat tubes, each flat tube having a length direction oriented along a vertical direction; and a plurality of fins, in which each fin is disposed between adjacent flat tubes and includes a plurality of fin units arranged along the length direction of the flat tube and sequentially connected into a corrugated shape, each fin unit has a windward end portion and a leeward end portion opposite to each other in a width direction of the flat tube, and at least one end portion of the windward end portion and the leeward end portion of each fin unit extends beyond the plurality of flat tubes along the width direction of the flat tube and is provided with a drain hole.

Abstract: A capacitor, an image sensor circuit and fabricating methods are provided. The method includes providing a base substrate including a trench region and a body region adjacent to the trench region. The method also includes forming a first trench structure and a second trench structure on the first trench structure, in the base substrate in the trench region. In addition, the method includes forming a dielectric layer on a sidewall surface and a bottom surface of the first trench structure and an electrode layer on the dielectric layer in the first trench structure. Further, the method includes forming an isolation layer filling the second trench structure.

Abstract: A control method for controlling audio playing includes obtaining a playing instruction corresponding to a multi-media file, detecting whether a current playing environment meets a preset condition, and controlling playing of audio data in the multi-media file if the current playing environment meets the preset condition. The current playing environment includes at least one of a current audio output channel, the multi-media file, and a current time.

Abstract: Provided is a floating observation system, comprising a floating platform. The floating platform comprises an upper deck (1), several upright posts (3), a device compartment (2), a ballast compartment (4), a radome structure (5) and a device installation base (6). Top ends of the upright posts (3) are connected to the upper deck (1), and bottom ends thereof are connected to the device compartment (2). The ballast compartment (4) is connected to the device compartment (2). The radome structure (5) is borne on the upper deck (1). The device installation base (6) is arranged on the outer surface of the floating platform. The floating platform has a reasonable structure and a powerful bearing capacity. Various types of devices can be borne by the upper deck (1) and the device compartment (2) on the floating platform.

Abstract: According to the embodiments of the present disclosure, a first terminal device may create a peer-to-peer (P2P) group, and then determine a Service Set Identifier (SSID) and a connection password of the P2P group, and then send the SSID and the connection password to a second terminal device so that the second terminal device is able to connect to the first terminal device according to the SSID and the connection password. In this way, prior to establishment of the wireless connection, the second terminal device may acquire the SSID and the connection password of the P2P group created by the first terminal device, thus second terminal device may directly use the SSID and the connection password to connect to the first terminal device without cumbersome discovery and negotiation processes as used in establishment of a conventional P2P connection.

Abstract: A fin and a heat exchanger having the fin, wherein the fin includes a sheet body. The sheet body includes a plurality of cooling sheet units arranged along a longitudinal direction of the sheet body. Each cooling sheet unit includes a windward zone, a main heat exchange zone and a leeward zone arranged along a transverse direction of the sheet body. The windward zones of adjacent cooling sheet units are connected to each other. A flat tube groove extends between the leeward zone and the main heat exchange zone of one of the adjacent cooling sheet units and the leeward zone and the main heat exchange zone of the other of the adjacent cooling sheet units. Each cooling sheet unit is provided with a plurality of protrusions spaced apart from each other.

Abstract: A method for providing a collision alert is provided. The method includes: receiving position information of one or more vehicles; determining, based on the position information and road information, that a vehicle is about to encounter another vehicle at a curve; and providing the collision alert to the vehicle indicating a potential collision at the curve.

Abstract: A method includes: monitoring a plurality of wireless working frequency bands supported by a smart terminal; when a Peer to Peer (P2P) data packet is received at any of the wireless working frequency bands, analyzing the P2P data packet and obtaining device information of a smart device; and establishing a wireless connection with the smart device at the wireless working frequency band according to the device information.

Abstract: A display device includes: a display panel; a mainboard including a processing circuit, a signal transmission interface, and a signal conversion interface, wherein the signal conversion interface includes a first interface and a second interface, and the signal transmission interface is electrically connected to a signal transmission interface of the display panel; and an adaptation circuit electrically connected to the signal conversion interface, the first interface of the signal conversion interface being electrically connected to the processing circuit of the mainboard and the second interface of the signal conversion interface being electrically connected to the signal transmission interface of the mainboard.

Abstract: A server, system, and client are provided. The server receives audio data from one or more clients; receives an audio data request from a requesting client, and obtains, from the audio data request, a mixing manner of audio data requested by the requesting client; preprocesses audio data of a client of the one or more clients that corresponds to the audio data request using the obtained mixing manner; and sends the preprocessed audio data to the requesting client.

Abstract: An icon position interchanging method includes receiving a first sliding signal triggered by a first dragging operation over a first icon and a second sliding signal triggered by a second dragging operation over a second icon, determining a first sliding vector according to the first sliding signal and a second sliding vector according to the second sliding signal, judging whether the first sliding signal and the second sliding signal satisfy a preset condition according to a first length of the first sliding vector and a second length of the second sliding vector, and performing position interchanging on the first icon and the second icon if the first sliding signal and the second sliding signal satisfy the preset condition.

Abstract: A capacitor, an image sensor circuit and fabricating methods are provided. The method includes providing a base substrate including a trench region and a body region adjacent to the trench region. The method also includes forming a first trench structure and a second trench structure on the first trench structure, in the base substrate in the trench region. In addition, the method includes forming a dielectric layer on a sidewall surface and a bottom surface of the first trench structure and an electrode layer on the dielectric layer in the first trench structure. Further, the method includes forming an isolation layer filling the second trench structure.

Abstract: The present disclosure relates to a method and an apparatus for controlling a smart device. The method includes: when a first hand gesture is detected, preparing to switch a control relationship according to the first hand gesture and a first mapping relationship, the first mapping relationship including a corresponding relationship between hand gestures and respective control functions; when a second hand gesture is detected, determining a target controlled device according to the second hand gesture and a second mapping relationship, the second mapping relationship including a corresponding relationship between hand gestures and locations of respective controlled devices; establishing a first control relationship with the target controlled device; acquiring a third hand gesture; and controlling, according to the third hand gesture and the first mapping relationship, the target controlled device to perform an operation corresponding to the third hand gesture.

Abstract: A method is provided for updating a connection parameter of a low-power Bluetooth device. The method includes, upon detection of a local switch of remote control modes, transmitting, to a controlled device, a prompt message indicating the local switch, such that a request for updating a connection parameter is generated based on the prompt message and transmitted to a Bluetooth remote control device. A valid time for the connection parameter is carried in the request, and is earlier than a default valid time. The method also includes monitoring, for every connection interval after the local switch, whether the request is received locally. The method also includes upon detection of the request, transmitting, to the controlled device, a response for agreeing to update the connection parameter. The method further includes updating the connection parameter between the Bluetooth device and the controlled device, when the valid time for the connection parameter arrives.

Abstract: A method for managing power usage is perform at a mobile terminal having one or more processors and memory storing programs executed by the one or more processors. The mobile terminal collects its operating environment information while the mobile terminal is in a first operating mode. The mobile terminal compares the collected operating environment information with a plurality of power usage switch conditions, each power usage switch condition having an associated operating mode, to determine whether the collected operating environment information matches one of the plurality of power usage switch conditions. When this happens, the mobile terminal determines its current working status and switches from the first operating mode to the second operating mode when there is no conflict between the mobile terminal's current working status and the second operating mode associated with the matched power usage switch condition.

Abstract: A display device includes: a display panel; a mainboard including a processing circuit, a signal transmission interface, and a signal conversion interface, wherein the signal conversion interface includes a first interface and a second interface, and the signal transmission interface is electrically connected to a signal transmission interface of the display panel; and an adaptation circuit electrically connected to the signal conversion interface, the first interface of the signal conversion interface being electrically connected to the processing circuit of the mainboard and the second interface of the signal conversion interface being electrically connected to the signal transmission interface of the mainboard.

Abstract: An external extended device, an audio processing method and an audio playback method are provided. The external extended device is configured to receive power supplied and a signal transmitted by a television device and the external extended device includes: an integrated physical interface connecting the external extended device and the television device; and a sound-mixing processing chip electrically connected with the integrated physical interface and configured to: acquire an accompaniment audio signal transmitted by the television device via the integrated physical interface; perform sound-mixing processing on a user voice signal gathered by a microphone device and the accompaniment audio signal; and transmit a sound-mixed signal to a power amplifier circuit of the television device via the integrated physical interface.