Abstract: A folding joint, the folding joint having two connecting plates, which are respectively connected to a rod member and are hinged on one side, wherein folding surfaces of the two connecting plates each have two or more bosses; each of the bosses of one of the connecting plates is provided with a clamping block, which is driven by a screw rod and has a groove at one side; concave edges of the groove on one side of the clamping block can simultaneously come into contact with flanges of the bosses of each of the connecting plates when the two connecting plates are folded close to each other; and the connecting plates folded close to each other are clamped and fastened.

Abstract: Methods and systems for off-route identification may be provided. A first navigation route of an object that is traveling and one or more positioning location points during traveling may be obtained. Whether a first preset condition is satisfied may be determined based on a positional relationship between the one or more positioning location points and the first navigation route. In response to determining that the first preset condition is not satisfied, whether the object is off-route may be determined based on information associated with the traveling of the object.

Abstract: The present disclosure relates to systems and methods for identifying a closed road section. The systems may obtain a first heat map representing a first density of tracked vehicles in a target area over a first time period and a second heat map representing a second density of tracked vehicles in the target area over a second time period; determine a difference map between the first heat map and the second heat map; determine one or more candidate regions based on the difference map; identify one or more candidate links associated with the one or more candidate regions in a road network map; determine one or more confidence levels associated with the one or more candidate links based on the one or more candidate regions; and identify one or more closed road sections based on the one or more confidence levels.

Abstract: The present disclosure relates to systems and methods for monitoring traffic congestion. The systems may perform the methods to obtain traffic data associated with speeds or locations of a plurality of vehicles at a first time point; determine a plurality of congested links based on the traffic data; determine one or more congested areas by searching for congested links that are topologically close and clustering the congested links generated by the search; for each of the one or more congested areas, determine whether the congested area is a normal congested area or an abnormal congested area; and display congestion information associated with at least one of the one or more congested areas, wherein the congestion information may include a designation indicating whether the at least one of the one or more congested areas is the normal congested area or the abnormal congested area.

Abstract: The present disclosure relates to systems and methods for identifying a closed road section. The systems may obtain a first heat map representing a first density of tracked vehicles in a target area over a first time period and a second heat map representing a second density of tracked vehicles in the target area over a second time period; determine a difference map between the first heat map and the second heat map; determine one or more candidate regions based on the difference map; identify one or more candidate links associated with the one or more candidate regions in a road network map; determine one or more confidence levels associated with the one or more candidate links based on the one or more candidate regions; and identify one or more closed road sections based on the one or more confidence levels.

Abstract: The present disclosure relates to systems and methods for monitoring traffic congestion. The systems may perform the methods to obtain traffic data associated with speeds or locations of a plurality of vehicles at a first time point; determine a plurality of congested links based on the traffic data; determine one or more congested areas by searching for congested links that are topologically close and clustering the congested links generated by the search; for each of the one or more congested areas, determine whether the congested area is a normal congested area or an abnormal congested area; and display congestion information associated with at least one of the one or more congested areas, wherein the congestion information may include a designation indicating whether the at least one of the one or more congested areas is the normal congested area or the abnormal congested area.

Abstract: The present invention provide an optical distribution method that includes determining, a first optical distribution frame and a second optical distribution frame, and generating first port indication information and second port indication information according to fiber patch cord setting information; and sending the first port indication information to the first optical distribution frame, sending the second port indication information to the second optical distribution frame, receiving a first port identity and a fiber patch cord identity corresponding to the first port identity which are sent by the first optical distribution frame, and receiving a second port identity and a fiber patch cord identity corresponding to the second port identity which are sent by the second optical distribution frame.

Abstract: The present invention discloses a method, an apparatus, and a system for centralized 802.1X authentication in a wireless local area network, and the method includes: receiving, by the access point, an EAP authentication start message from the UE, where a destination address of the EAP authentication start message is a MAC address corresponding to an air interface of the access point, and its source address is a MAC address of the UE; modifying the destination address of the EAP authentication start message to be a multicast address of a port access entity or a MAC address of the authentication entity; and forwarding the EAP authentication start message whose destination address is modified.

Abstract: The present invention provide an optical distribution method that includes determining, a first optical distribution frame and a second optical distribution frame, and generating first port indication information and second port indication information according to fiber patch cord setting information; and sending the first port indication information to the first optical distribution frame, sending the second port indication information to the second optical distribution frame, receiving a first port identity and a fiber patch cord identity corresponding to the first port identity which are sent by the first optical distribution frame, and receiving a second port identity and a fiber patch cord identity corresponding to the second port identity which are sent by the second optical distribution frame.

Abstract: A method, an apparatus, and a system for carrying out a multimedia service are provided in a WLAN. The method includes: receiving a multicast data stream sent by a data server; and monitoring in real time a receiving rate of a terminal connected to an access point, if the receiving rate is higher than or equal to a multicast sending rate at which the access point sends multicast data, sending, in a multicast mode, the multicast data stream sent by the data server to the terminal, and if the receiving rate is lower than the multicast sending rate, converting the multicast data stream sent by the data server into a unicast data stream and sending the unicast data stream to the terminal.

Abstract: The present invention discloses a method, an apparatus, and a system for centralized 802.1X authentication in a wireless local area network, and the method includes: receiving, by the access point, an EAP authentication start message from the UE, where a destination address of the EAP authentication start message is a MAC address corresponding to an air interface of the access point, and its source address is a MAC address of the UE; modifying the destination address of the EAP authentication start message to be a multicast address of a port access entity or a MAC address of the authentication entity; and forwarding the EAP authentication start message whose destination address is modified.

Abstract: A method and device for displaying a window of security class software are disclosed. The method includes processing a window based on a selected window style according to a detection result of a security status of a processing equipment detected by the security class software, and displaying the window corresponding to the detection result. Based on characteristics of the security class software, a solution that can display different windows under one window style according to the detection result of the processing equipment is provided, so that a user can intuitively know the current security status of the processing equipment through an intelligently displayed window. Using skin change technology of the security class software, a user can be informed intuitively and vividly that whether the processing equipment used by the user is safe or not.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for carrying out a multimedia service in a WLAN. The method includes: receiving a multicast data stream sent by a data server; and monitoring in real time a receiving rate of a terminal connected to an access point, if the receiving rate is higher than or equal to a multicast sending rate at which the access point sends multicast data, sending, in a multicast mode, the multicast data stream sent by the data server to the terminal, and if the receiving rate is lower than the multicast sending rate, converting the multicast data stream sent by the data server into a unicast data stream and sending the unicast data stream to the terminal. In the solution, the mode of sending multimedia data stream by the access point is determined according to the receiving rate of the terminal, which improves the transmission quality of the multimedia data stream and enhances the user experience.

Abstract: Systems and methods for electromechanical oscillation monitoring are disclosed herein. In one embodiment, a method for monitoring electromechanical oscillation in a power system includes forming a power density spectrum in frequency domain based on phasor measurements collected from a plurality of locations in the power system and identifying an oscillation in the power density spectrum. The oscillation has a power density larger than other oscillations. The method also includes analyzing the identified oscillation in time domain to determine a damping characteristic of the identified oscillation and indicating that an insufficiently damped oscillation exists in the power system if the determined damping characteristic of the oscillation meets a predetermined condition.

Abstract: Systems and methods for electromechanical oscillation monitoring are disclosed herein. In one embodiment, a method for monitoring electromechanical oscillation in a power system includes forming a power density spectrum in frequency domain based on phasor measurements collected from a plurality of locations in the power system and identifying an oscillation in the power density spectrum. The oscillation has a power density larger than other oscillations. The method also includes analyzing the identified oscillation in time domain to determine a damping characteristic of the identified oscillation and indicating that an insufficiently damped oscillation exists in the power system if the determined damping characteristic of the oscillation meets a predetermined condition.