Abstract: A data recovery method includes executing a recovery program of the DFS to periodically generate backup data of the DFS. In response to received operations of a user on a client device, information in relation to the received operations is stored in a main computing device. When a master node of the DFS is running abnormally, the data recovery program is executed to restore the data of the DFS using backup data having a creation time closest to the current time. Specified operations with later creation times are determined. Information in relation to the specified operations is acquired from the stored information. According to the acquired information of the specified operations, each of the specified operations is re-executed.

Abstract: In a method for arranging a plurality of wires in a pipe, length of a each wire is determined in accordance with locations a plurality of holes on a surface of the pipe, and each of the plurality of wires on a lead stick is fastened in accordance with the locations of the plurality of holes on the surface of the pipe. Ends of the wires are perpendicularly connected to the surface of the lead stick. The lead stick are inserted into the pipe, and the ends of the plurality of wires are extended from the plurality of holes.

Abstract: A streetlight system includes a plurality of streetlights, disaster warning systems positioned at each of the streetlights and a control center electrically connected with the disaster warning systems. The streetlights are positioned at roadways. Each of the disaster warning systems includes a control system and a broadcasting system. When the control center receives a disaster alert signal, the control center transmits information of disaster shelters and evacuating routes to control system, and the broadcasting system broadcasts information of the disaster shelters and the evacuating routes to people for leading people to escape.

Abstract: In a file searching method using a computing device, the computing device connects to one or more terminal devices. An electronic file is obtained from a database when a file name is inputted from one of the terminal devices, and the file is analyzed to obtain a title and text content of the file. One or more keywords are extracted from each of the text content of the file using a term frequency-inverse document frequency (TF-IDF) rule. One or more interested terms are obtained from the keywords according to an importance factor of each of the keywords. The method obtains search results from the database according to the interested terms, and ranks the files according to a relevance degree between each file in the search results and the interested terms. The computing device sends the files with a ranking order to the terminal device.

Abstract: A computing device is electronically connected to one or more clients for a video conference. The computing device firstly sends a first video image to the clients. When a client requests a custom video image, the computing device obtains a second video image by merging images of all conference participants for the client, and sends to the client. The client selects information from the second video image and sends the information to the computing device. After receiving the information, the computing device creates the custom video image according to the received information, and sends the custom video image to the client.

Abstract: A method for managing geographical information of a plurality of Voice over Internet Protocol (VoIP) terminal devices using a VoIP server receives location information of the VoIP terminal devices from the VoIP terminal devices, stores geographical information of the VoIP terminal devices into a data sheet stored in a storage device of the VoIP server. The method detects a query from one of the VoIP terminal devices, retrieves the geographical information from the data sheet according to the query, and obtains an electronic map from the storage device. The method further populates the retrieved geographical information on the electronic map, and sends the electronic map to the VoIP terminal device corresponding to the location information.

Abstract: A server and method detects a power transformer. The server reads power transformer data from a data converter and determines if work state of a power transformer needs to be changed from based on the power transformer data. An alert message is generated by the server and sent to an alarm computer in response to a determination that the work state of the power transformer needs to be changed. The server saves the power transformer data into a database system.

Abstract: In a method for measuring a speed of a vehicle, the method starts a first motion sensor to sense a first position of the vehicle controls a first camera to capture a first image of the vehicle, and records a first time. A license plate number of the vehicle is identified from the first image, and a length of the vehicle is obtained from a database according to the license plate number. The method starts a second motion sensor to sense a second position of the vehicle controls a second camera to capture a second image of the vehicle, and records a second time. The method calculates a moving distance of the vehicle according to the first and the second position and the length of the vehicle, and calculates a speed of the vehicle according to the moving distance, the first time and the second time.

Abstract: A traffic monitoring system includes a plurality of cameras, a monitor center and a portable electronic device. The cameras are respectively positioned at a plurality of monitoring regions to obtain images of the monitoring regions. The monitor center receives the images of the monitoring regions from the cameras and determines a traffic information in the monitoring regions according to the images. The portable electronic device is communicated with the monitor center and receives the traffic information from the monitor center. A method for monitoring a roadway condition is also provided.

Abstract: A streetlight system includes a plurality of streetlights, disaster warning systems positioned at each of the streetlights and a control center electrically connected with the disaster warning systems. The streetlights are positioned at roadways. Each of the disaster warning systems includes a control system and a broadcasting system. When the control center receives a disaster alert signal, the control center transmits information of disaster shelters and evacuating routes to control system, and the broadcasting system broadcasts information of the disaster shelters and the evacuating routes to people for leading people to escape.

Abstract: A server and method detects a pipeline. The server reads pipeline data from a data collector and analyzes the pipeline data to determine if the pipeline works abnormally. An alert command is sent by the server to an alarm computer to notify a user in response to a determination that the pipeline works abnormally. The server saves the pipeline data into a database system.

Abstract: An electronic device connected with at least one digital video camera dynamically monitors an area where the digital video camera covers. The electronic device displays a monitor point tree, where each node corresponds to a digital video camera. The electronic device can dynamically create an icon control component of a selected digital video camera on an electronic map by dragging and dropping the node corresponding to the one selected on a electronic map. The electronic device can play a video feed of the digital video camera by clicking on the created icon control component.

Abstract: A mobile device comprises a built-in camera connects to a monitoring server via a communication network. The mobile device records a video feed and compresses the recorded video feed. The mobile device uploads the compressed video to the monitoring server. The mobile device can log in to the monitoring server to watch the uploaded video feed.

Abstract: A system and method for performing mutual authentication verifies a username and a password of a handheld device by a server, and verifies an identity of the server by the handheld device if the handheld device passes the username and password verification. The system and method further verifies an identity of the handheld device by the server if the identity of the server is valid, and gives an access authority to the handheld device if the identity of the handheld device is valid.

Abstract: A server communicates with one or more work machines and automated guided vehicles (AGVs) via a wireless network. When receiving a request signal for desired material, the server analyzes the request signal to determine a location of the work machine, and searches for an AGV according to basic information of a production scene stored a storage device. The server further generates a control command according to the location of the work machine, a starting location of the searched AGV, and arrangement information of AGV tracks obtained from the basic information, and controls the searched AGV to move to the location of the work machine according to the control command, to delivered the desired material carried by the searched AGV to the work machine.

Abstract: A method for managing geographical information of a plurality of Voice over Internet Protocol (VoIP) terminal devices using a VoIP server receives location information of the VoIP terminal devices from the VoIP terminal devices, stores geographical information of the VoIP terminal devices into a data sheet stored in a storage device of the VoIP server. The method detects a query from one of the VoIP terminal devices, retrieves the geographical information from the data sheet according to the query, and obtains an electronic map from the storage device. The method further populates the retrieved geographical information on the electronic map, and sends the electronic map to the VoIP terminal device corresponding to the location information.

Abstract: An electronic device with a water level monitoring system monitors a buoy to determine if a water level is acceptable. The device separates level markers of the containment facility and the buoy floating therein. The device traces a trace of the movement of the buoy and compares the trace and security lines to determine if the water level is acceptable or not. If the water level is unacceptable, the device sends an alarm to an alarm mainframe to display a warning on a monitor array.

Abstract: A method executed by a processor of a server sets device parameters and system parameters in relation to the server and one or more monitoring devices, and collects data from each of the one or more monitoring devices according to the set device parameters and system parameters. The collected data is stored into a first queue, and read at a specified time interval, and then stored into a database. Any abnormality in the operation of the monitoring devices is stored into a second queue and processed in real-time.

Abstract: A server communicates with one or more work machines and automated guided vehicles (AGVs) via a wireless network. When receiving a request signal for desired material, the server analyzes the request signal to determine a location of the work machine, and searches for an AGV according to basic information of a production scene stored a storage device. The server further generates a control command according to the location of the work machine, a starting location of the searched AGV, and arrangement information of AGV tracks obtained from the basic information, and controls the searched AGV to move to the location of the work machine according to the control command, to delivered the desired material carried by the searched AGV to the work machine.

Abstract: An identification device reads an identification number from a tag of goods which are transported on an input guide rail. An application server receives the identification number from the identification device. The application server searches for a serial number of a designated output guide rail according to the identification number. When the goods are transported to an intersection of the input guide rail and the designated output guide rail. The goods are carried onto the designated output guide rail. The application serer controls the goods to be transported to a destination station along the designated output guide rail.