Abstract: A rigid-flexible coupled unmanned aerial vehicle (UAV) morphing wing and an additive manufacturing method thereof are disclosed. A shape memory alloy (SMA) strip/wire for controlling the wing upward deformation and an SMA strip/wire for controlling the wing downward deformation are arranged alternately, and a plurality of reinforcing ribs are arranged at intervals on the SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation. The SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation are arranged on a flexible substrate, and are wrapped with an insulating covering. The SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation each are provided with an electric heating element.

Abstract: The communication method includes: sending, by a CMTS (cable modem terminals stem), a reference signal within a first time period by using a valid subcarrier in a first spectrum, where the first time period is a time period within which none of CMs (cable modems) connected to the CMTS sends a signal in the first spectrum; performing, by the CMTS based on an interfering signal received by the CMTS within the first time period, channel interference estimation on a channel that is used during signal reception of the CMTS and that occupies the first spectrum, where the interfering signal is a signal obtained after the reference signal passes through the channel; and canceling, by the CMTS based on a result of the channel interference estimation, interference from a first signal received by the CMTS to a second signal received by the CMTS.

Abstract: Disclosed are a pretreatment method and system for a fraction oil for the production of alkylbenzene, the method comprising: adding a fraction oil, a weak base solution and an inorganic salt solution into a reactor, and leaving same to stand and layering same after the reaction is complete; adding water and an inorganic salt solution into an oil phase for washing with water; extracting same with a polar solvent having a high boiling point, and then adsorbing same with an adsorbent to separate oxygen-containing compounds in the neutral fraction oil; sending the extraction agent containing the oxygen-containing compounds to an extraction agent recovery unit; and then sending the neutral fraction oil to an alkylation reactor for a reaction.

Abstract: A ring bus and a credit allocation method are provided. The ring bus includes a slave module and multiple master modules. The slave module includes an injection table and a state table, and is configured to generate a credit signal including a node identity and an active code. The master modules are coupled to the slave module to form a ring path. The slave module determines whether the credit signal is a newly injected credit signal, and determines the node identity of the credit signal according to the injection table or the state table. The slave module transmits the credit signal to the master module corresponding to the node identity through the ring path according to the node identity. The slave module uses a corresponding idle entry to receive a credit request signal provided by the master device consuming a credit of the credit signal.

Abstract: The present invention provides a power adjustment method, a network management system, a CMTS, and a CM. The power adjustment method includes: obtaining, by a network management system, a first SNRCM between two CMs connected to a CMTS, where the first SNRCM represents a signal ratio of a signal sent by the CMTS to a first CM and received by the first CM to a signal sent by a second CM to the CMTS and received by the first CM; and sending, by the network management system, indication information to the CMTS based on the first SNRCM, and a first relationship between an SNRCM and a transmit power at which the CMTS sends a signal to the CM.

Abstract: A secondary battery and its preparation method, the secondary battery having a negative electrode containing a negative current collector and no negative active material; an electrolyte having an electrolyte salt and an organic solvent; a separator; a positive electrode having a positive active material layer containing a positive active material, wherein the positive active material comprises a material having a layered crystal structure; and a battery case used for packaging. Main active component of the secondary battery is the positive active material having a layered crystal structure, which is environmentally-friendly and low in cost; meanwhile, negative active material is not needed by the second battery system, thereby remarkably reducing the weight and cost of the battery and improving the battery energy density. The reaction mechanism adopted by the secondary battery significantly increases the working voltage of the battery and further improves the energy density of the battery.

Abstract: The current invention discloses methods and devices for adding a new member to a group, e.g. a chat group associated with a chat program. The new member may be added through a barcode-scanning process or an existing-member-invitation process. After the new member is added to the chat group, a server may send notification messages to mobile devices associated with the existing members of the group. The contents of the notification messages may vary based on the processes by which the new member is added, the number of existing members, and the direct-contact relationships the new member has with the existing members. The current invention provides simplified methods and devices for adding the new member, avoiding cumbersome operations and protecting member privacy at the same time.

Abstract: A method of searching content is provided. The method includes receiving, in a social media messaging program, a search request including one or more search terms from a user of a client device. The method further includes searching, among the user's contacts locally stored on the client device, for contacts matching with the one or more search terms to produce first search results displaying a least a subset of the first search results and one or more search navigation affordances. At least one of the search navigation affordances corresponds to second search results of a first content type that are shared by the user and other users and at least one of the search navigation affordances corresponds to third search results of a second content type different from the first content type that are associated with the user.

Abstract: A ring bus and a credit allocation method are provided. The ring bus includes a slave module and multiple master modules. The slave module includes an injection table and a state table, and is configured to generate a credit signal including a node identity and an active code. The master modules are coupled to the slave module to form a ring path. The slave module determines whether the credit signal is a newly injected credit signal, and determines the node identity of the credit signal according to the injection table or the state table. The slave module transmits the credit signal to the master module corresponding to the node identity through the ring path according to the node identity. The slave module uses a corresponding idle entry to receive a credit request signal provided by the master device consuming a credit of the credit signal.

Abstract: A method includes: determining a length of a trunk cable based on a first time domain characteristic of an echo channel of a cable modem termination system CMTS; determining, based on a second time domain characteristic of an echo channel of each cable modem CM, a length of a drop cable connected to the trunk cable; determining a connection relationship between each CM and the trunk cable based on a signal to interference plus noise ratio SINR between any two of the CMs; and determining a topology of a network based on the length of the trunk cable, the length of the drop cable, and the connection relationship between each CM and the trunk cable.

Abstract: A message sending method includes: displaying chat messages on a chat interface, which is one of a group chat interface and a single chat interface; when detecting a reply operation performed by a user on a first chat message in the chat messages, obtaining content of the first chat message and content of a reply message corresponding to the reply operation; combining the content of the first chat message and the content of the reply message into a second chat message; when the first chat message is on the group chat interface, sending the second chat message to a client corresponding to each chat account that participates in a group chat; and when the first chat message is on the single chat interface, sending the second chat message to a client corresponding to a chat account that posted the first chat message.

Abstract: A bonding device and a bonding method for an irregular-shaped curved cover plate and a flexible screen are disclosed. The bonding device includes: a support body supporting the flexible screen; and a bonding body supporting the flexible screen together with the support body and pressing the flexible screen. The bonding body has a cylindrical shape. A cross-sectional shape of the bonding body along an axial direction matches with a cross-sectional shape of the irregular-shaped curved cover plate. The support body is located at a radial end of the bonding body. The bonding body can be expanded along the axial direction, to have opposite sides thereof abutted against the arc hook areas.

Abstract: A cable modem (CM), a hybrid fiber coaxial (HFC) network fault locating system, and a fault detection method are provided. The CM can not only detect intrusion noise outside a carrier and white noise, but also detect other fault problems, such as non-linear distortion, pulse noise, intrusion noise on a carrier, and linear distortion. The system includes a direction-selective apparatus. The apparatus can allow only an upstream signal entered from an output port of the apparatus to be transmitted to a CM to which a branch port of the apparatus is connected, without allowing an upstream signal entered from an input port of the apparatus to be transmitted to the CM to which the branch port of the apparatus is connected, so that once detecting a fault from the upstream signal, the CM can accurately determine, through locating, that the fault in an HFC network is located on an output port side of the apparatus.

Abstract: A method implemented by a cable modem of a cable network includes sending an upstream test signal during at least one frequency division duplex minislot assigned to the cable modem, receiving other upstream test signals from other cable modems, measuring interference in each received test signal from the other cable modems, and reporting the interference measurement for each received test signal to a cable modem termination system.

Abstract: A network interaction system may comprise a terminal device, an instant messaging server, and a public account server. The terminal device may be configured to receive information from the public account server via the instant messaging server. The instant messaging server may be configured to receive from the terminal device an information operation request associated with information from the public account server. Then the instant messaging server may send a notification associated with the information operation request to the public account server and send a response to the information operation request to the terminal device. The public account server may be configured to receive from the instant messaging server the notification and determine an information transmission strategy for the terminal device in accordance with the information operation request.

Abstract: The present disclosure provides example channel parameter estimation methods and related apparatuses. In one example method, a cable modem (CM) obtains a second data frame through a downlink channel between the CM and a cable modem termination system (CMTS). The second data frame is generated after a first data frame sent by the CMTS is modulated through the downlink channel, a zero-bit-loaded symbol of the first data frame includes no valid codeword, but includes a zero-bit-loaded NCP and an idle codeword identified by the zero-bit-loaded NCP, and the idle codeword includes a data sequence used for channel parameter estimation. The CM can estimate a channel parameter of the downlink channel based on a data sequence in an obtained zero-bit-loaded symbol of the second data frame and the data sequence in the zero-bit-loaded symbol of the first data frame.

Abstract: Mail processing methods and a server are described. The server receives a mail reply request sent from a client, determines whether a new contact and an original attachment are present in the mail reply request, and if it determines that the new contact and the original attachment are present in the mail reply request, generates a data packet based on a predetermined rule for non-regular mails, and transmits the data packet to a destination.

Abstract: Method and server system for user login verification are disclosed. The method includes: obtaining a verification request from a first device for an account operation requested by a user using a first account; identifying, from the server system, usage history data associated with the first account, including data regarding usage of the first account on the first device; determining, in accordance with the data regarding the usage of the first account on the first device and one or more predetermined usage history criteria, whether the account operation associated with the first account on the first device is safe; and in accordance with a determination that the account operation associated with the first account on the first device is not safe, initiating a verification process based on a second device that qualifies as being safe for the account operation.

Abstract: A method and a device are provided for inputting account information in the field of Internet communications. The method includes: obtaining user account information included in a first application; obtaining an information type of a form element included in a form of a second application; determining account information corresponding to the form element according to the information type of the form element and the user account information; and automatically inputting the account information corresponding to the form element to the form element. The device includes a processor and a non-transitory storage medium, which includes: a first obtaining module, a second obtaining module, a determining module, and an inputting module.