Abstract: In one implementation, a computer system receives a request from a first user to perform an operation related to a file stored by the computer system. The file is associated with a second user, and the second user has shared the file with the first user with one or more conditions on the usage of the file by the first user. Based on the first user requesting to perform the operation, the computer system evaluates whether the one or more conditions placed on the usage of the file by the first user allow the first user to perform the operation. Based on evaluation results, the computer system determines that the one or more conditions placed on the usage of the file by the first user allow the first user to perform the operation and authorizes performance of the operation.

Abstract: Fault protection circuitry and methodologies for isolated power supply topologies are provided. The circuitry is configured to shut down the primary side of the supply in case of a system fault, while keeping the secondary side circuit running, thus offering flexibility for restarting upon clearing of the fault. A lighting driver thus configured with safety isolation and a secondary side microcontroller or other control circuitry, is configured so that the circuit can shut down the primary side in response to system fault detection, while keeping the secondary microcontroller running from an energy storage circuit (e.g., bulk capacitor in parallel with load). The driver operation can resume with a controlled timing if the fault is cleared. The number of restarts may be limited, and/or a timer may be used to space restarts. The driver may be used with loads other than lighting-based loads, as will be appreciated.

Abstract: A method, comprising: storing, at a server device, an electronic resource; receiving, at the server device and from a client device associated with a first user, a request on behalf of the first user to access the electronic resource; responsive to receiving the request on behalf of the first user to access the electronic resource, enabling the client device associated with the first user to access the electronic resource; while the client device associated with the first user is accessing the electronic resource, receiving, at the server device and from the client device associated with the first user, a request to validate a representation of a credential purported to represent another user received by the client device; validating the received representation of the credential as representing a second user; and responsive to validating the received representation of the credential, enabling the first user to electronically sign the electronic resource.

Abstract: Systems, methods, and computer program products for turn on optimization of a driver for one or more light sources are disclosed. A duty cycle value is selected from a table. The selected duty cycle corresponds to the target output current of the driver and has a corresponding voltage. The selected duty cycle is applied to the driver. An output voltage at the light source is measured, and compared to the corresponding voltage of the selected duty cycle to produce a voltage comparison result. Based on the comparison result, the selection of the duty cycle is adjusted. Additionally, an output current of the light source is measured and compared to the target output current, to produce a current comparison result. An adjustment coefficient is applied to a feedback circuit of the driver based thereon, wherein the feedback circuit adjusts a switching frequency of the driver based on the selected duty cycle.

Abstract: Methods of packet-based synchronization in non-stationary network environments can include accumulating timestamps transmitted in packets between master and slave devices that are separated from each other by a packet network. Operations are also performed to determine whether first timestamps accumulated in a first direction across the packet network demonstrate that a first packet delay variation (PDV) sequence observed from the first timestamps is stationary. Thereafter, estimates of at least one of frequency skew and phase offset between the master and slave clocks are acquired using a first algorithm, from the first timestamps accumulated in the first direction. These operations of determining further include determining whether second timestamps accumulated in a second direction demonstrate that a second packet delay variation (PDV) sequence observed from the second timestamps is stationary.

Abstract: Disclosed are a method and a system for updating a multi-frequency band pre-distortion coefficient lookup table, in order to solve the problems that the calculation complexity is high. Wherein, the method comprises: collecting a first frequency band reference signal and a first frequency band feedback signal, a second frequency band reference signal and a second frequency band feedback signal; calculating a first frequency band pre-distortion coefficient and a second frequency band pre-distortion coefficient; performing phase calibration on the first frequency band pre-distortion coefficient and the second frequency band pre-distortion coefficient, respectively; and updating a first lookup table according to the first frequency band pre-distortion coefficient performed the phase calibration, and updating a second lookup table according to the second frequency band pre-distortion coefficient performed the phase calibration.

Abstract: Disclosed is a method and a system for switching pre-distortion coefficients, which is used to solve the problem of interference with neighbor cells due to the inferior pre-distortion coefficients. The method comprises: presetting a primary table and a standby table, wherein the primary table stores default pre-distortion coefficients and the standby table stores updated pre-distortion coefficients; when a data source of a pre-distortion processor adopts the standby table, adopting the updated pre-distortion coefficients to perform parameter output processing to acquire pre-distortion parameters, and conveying the pre-distortion parameters and an input signal to the pre-distortion processor to process to acquire pre-distortion signals; conveying the pre-distortion signals through various signal processors to acquire a first signal, and determining the power data of the first signal; and based on the comparing result of the power data of the first signal and a setting range, there are different actions.

Abstract: In one implementation, a processing system receives a request from a client device to access a user account of the user. In response to receiving the request, the processing system transmits credential data, which corresponds to a credential and which indicates client device data to transmit in response to receiving the credential data. The processing system receives the client device data from the client device, identifies an issuer of the credential, and transmits the client device data to the issuer of the credential.

Abstract: Disclosed are a method and a system for updating a multi-frequency band pre-distortion coefficient lookup table, in order to solve the problems that the calculation complexity is high. Wherein, the method comprises: collecting a first frequency band reference signal and a first frequency band feedback signal, a second frequency band reference signal and a second frequency band feedback signal; calculating a first frequency band pie-distortion coefficient and a second frequency band pre-distortion coefficient; performing phase calibration on the first frequency band pre-distortion coefficient and the second frequency band pre-distortion coefficient, respectively; and updating a first lookup table according to the first frequency band pre-distortion coefficient performed the phase calibration, and updating a second lookup table according to the second frequency band pre-distortion coefficient performed the phase calibration.

Abstract: A server receives, from a first client device associated with a first user, a certification request including information associated with an electronic document, along with a representation of a credential associated with a second user. The server validates the representation of the credential associated with the second user. Responsive to validating the representation of the credential, the server attaches a badge to the electronic document, the badge corresponding to the credential and providing a certification that the second user has witnessed the electronic document. The server stores information corresponding to the electronic document with the attached badge.

Abstract: The present invention discloses a method and a device for prompting information about an e-mail. The method comprises: extracting information from a currently opened e-mail; according to the extracted information, determining whether an unsafe webpage link is contained in content of the currently opened e-mail; and if yes, providing security prompting information to a user. By means of the present invention, security is ensured when a person uses an e-mail box.

Abstract: A method, comprising: storing, at a server device, an electronic resource; receiving, at the server device and from a client device associated with a first user, a request on behalf of the first user to access the electronic resource; responsive to receiving the request on behalf of the first user to access the electronic resource, enabling the client device associated with the first user to access the electronic resource; while the client device associated with the first user is accessing the electronic resource, receiving, at the server device and from the client device associated with the first user, a request to validate a representation of a credential purported to represent another user received by the client device; validating the received representation of the credential as representing a second user; and responsive to validating the received representation of the credential, enabling the first user to electronically sign the electronic resource.

Abstract: A method and client for ensuring user network security, the method comprising: detecting whether a user opens a login operation mode or payment operation mode via a client; and when detecting that the user opens the login operation mode or payment operation mode, performing security monitoring for the login procedure or payment procedure of the user according to a preset security strategy. By applying the embodiment of the present invention, when a client user is in a login procedure or online payment procedure, security protection can be implemented for the login procedure or payment procedure via multiple security strategies specially used for ensuring the login procedure or payment procedure, and network security is ensured for the user during the login procedure or payment procedure via risky process interception, executable file prompt and browser invoke monitoring.

Abstract: A holding sealing material includes laminated mats. One or more fixed parts partially combine the mats. Each of the mats has a basic rectangular shape. Each of the mats has a recess on one of shorter sides of the rectangular shape and a projection on another shorter side and is designed to be wound around an object to be wound so that the projection and the recess are fitted to each other. The mats have respective longitudinal lengths that increase as a distance from the object to each of the mats increases. A mat that is placed at a closest position to the object has a shortest longitudinal length. An area of the projection of the mat that is placed at a closest position to the object is smaller than an area of the projection of a mat that is placed at a farthest position from the object.

Abstract: A method, apparatus, and system for maintaining corresponding relationships between at least one chat transcript and related chat content in an instant messaging system may include establishing a chat session in the instant messaging system. Corresponding chat content may be displayed synchronously according to a changed address of the chat content. The changed address of the chat content may be inserted into a chat transcript, and the chat transcript may be segmented into at least two segments to create a segmented chat transcript. The segmented chat transcript and corresponding relationship between the changed address of the chat content and corresponding chat transcript segments may be stored.

Abstract: A method for extracting scintillation pulse information includes followed steps: 1. obtaining a peak value of the scintillation pulse in a certain energy spectrum, and setting at least three threshold voltages according to the peak value; 2. determining the time when the scintillation pulse passes through the each threshold voltage, wherein each time value and its corresponding threshold voltage form a sampling point; 3. selecting multiple sampling points as sampling points for reconstructing and reconstructing pulse waveform; 4. obtaining the data of original scintillation pulse by using reconstructed pulse waveform. A device for extracting scintillation pulse information includes a threshold voltage setting module (100), a time sampling module (200), a pulse reconstruction module (300) and an information acquiring module (400).

Abstract: Multiple output channel light source power supply circuits, and methods for protecting the output channels, are provided. A front end circuit receivess an input voltage and provides a regulated front end DC voltage. A plurality of voltage converter circuits are each configured to receive the regulated front end DC voltage and provide a separate associated DC output for an associated one of the multiple output channels. A protection switch is coupled therebetween, and includes a conducting state, to couple the front end DC voltage to the plurality of voltage converter circuits, and a non-conducting state, to decouple the front end DC voltage. A current sense circuit is coupled to the voltage converter circuits, and provides a current sense output representative of current through at least one voltage converter circuit. A controller circuit places the protection switch in the non-conducting state in response to the current sense output.

Abstract: An instant messaging communication method, computer program product and apparatus. The instant messaging communication apparatus includes input means for inputting an instant message and a semantic tag for the instant message; a network module for transmitting the input instant message and semantic tag and receiving an instant message with a semantic tag; construction means for constructing a visual topic structural diagram of the transmitted and received instant messages according to the semantic tag; and display means for displaying the visual topic structural diagram. An embodiment of the communication apparatus provides structured guidance to the user's discussion, directs the user to make pertinent announcement and enables the user to easily sum up the main points of the discussion from the log through a visualized topic structural diagram.

Abstract: Multiple output channel light source power supply circuits, and methods for protecting, are provided. A front end circuit receives an input voltage and provides a regulated front end DC voltage (FEDC). Voltage converter circuits (VCCs) receive the FEDC and provide a separate associated DC output for each associated output channel. A protection switch is coupled between. In its conducting state, the FEDC is coupled to the VCCs. In its non-conducting state, the FEDC is decoupled. A current sense circuit of a current sensor in parallel with a bypass switch is coupled to the VCCs to provide a current sense output representing current through at least one VCC. A controller circuit places the protection switch in the non-conducting state in response to the current sense output. The bypass switch may be placed in a conducting state to shunt current around the current sensor during normal operation to reduce or eliminate inefficiency.

Abstract: A first message associated with a collaborative task is received from a user. The first message includes an identification of the collaborative task, a plurality of participants for the collaborative task, and a request from the user for each of the participants to provide content for the collaborative task. In response to receiving the first message, a processor generates a request message for each of the participants. Each of the request messages includes a notification of the collaborative task and the request from the user for that participant to provide the content for the collaborative task. The request messages are sent to the participants.