65 results about "Reliable computing" patented technology

A multi-cloud data replication method includes providing a data replication cluster comprising at least a first host node and at least a first online storage cloud. The first host node is connected to the first online storage cloud via a network and comprises a server, a cloud array application and a local cache. The local cache comprises a buffer and a first storage volume comprising data cached in one or more buffer blocks of the local cache's buffer. Next, requesting authorization to perform cache flush of the cached first storage volume data to the first online storage cloud. Upon receiving approval of the authorization, encrypting the cached first storage volume data in each of the one or more buffer blocks with a data private key. Next, assigning metadata comprising at lest a unique identifier to each of the one or more buffer blocks and then encrypting the metadata with a metadata private key. Next, transmitting the one or more buffer blocks with the encrypted first storage volume data to the first online cloud storage. Next, creating a sequence of updates of the metadata, encrypting the sequence with the metadata private key and then transmitting the sequence of metadata updates to the first online storage cloud.

A computer-based system generates digital and audio responses to changes in fluid and rock properties of a producing hydrocarbon reservoir for surveillance analysis. The system calibrates observed changes against directly-measured field data in order to optimize the reservoir model. The changes may include, for example, stress changes in rock, impedance changes in rock, and fluid density changes.

System, method, computer, and computer program for secure data processing of potentially malicious code and documents or other data that may contain malicious code. System, method, computer for a secure and reliable computing environment to protect against data loss and/or corruption to provide secure and reliable data processing.

The embodiment of the invention discloses a robot system which comprises a server and at least one robot, wherein the server and the robot communicate with each other through a wireless link or a wire link; the robot is used for sending collected surrounding environmental information to the server; the server is used for receiving a task instruction, getting an action sequence and motion parameters of all actions in the action sequence according to the task instruction and the environmental information, and sending the motion parameters of the actions in the action sequence to the robot one by one according to the sequence of the actions in the action sequence; and the robot is used for performing corresponding actions according to the received motion parameters. The robot system provided by the embodiment of the invention separates a task planning step from the robot body, puts the task planning step in the charge of the server, can meet various concurrent highly real-time and highly reliable computation requirements in a task performing process of the robot, enables the robot to finish more tasks that are more complicated, improves intelligence of the robot, and enlarges the application service scene of the robot.

A method of developing an application for deployment on a computing system. The computing system includes a processor and a reconfigurable logic in communication with the processor for configuration thereby. The method includes programming the processor with hardware-neutral instructions in a high-level software programming language. The instructions are representative of an application configured to execute at least partially on the reconfigurable logic. The method further includes instantiating elements from a library of elements compatible with the high-level programming language; and constructing programmatically a generic data graph representative of the application to be mapped at least partially onto the reconfigurable logic. The generic data graph is expressed as streams of records flowing between operators. A computing system is also disclosed. By presenting an instruction level streaming data processing model that expresses an application as operators and data flows, the invention provide several advantages such as design portability.

The invention provides a method for performance evaluation of a spacecraft attitude control ground simulation system. According to the method, the credibility of a dynamic system, a kinematics system, a measurement system and a control system is studied based on the simulation system credibility theory, the overall credibility of the spacecraft attitude control ground simulation system is obtained through comprehensive calculation, and then the performance of the spacecraft attitude control ground simulation system is evaluated. According to the evaluation method, the credibility of the ground simulation system and an actual satellite attitude control system is considered from all aspects, simulation data are fully utilized, and the credibility of the ground simulation system is described objectively and quantitatively; the theoretical basis is reliable, the calculation process is simple, the application range is wide, and a new idea and reference are provided for performance evaluation study of other simulation systems.

The invention relates to a terminal credible security system which comprises a user identity credible security module, a terminal device credible security module, a platform credible security module.The user identity credible security module is used for setting lists for storing important documents of users and utilizing a kernel protection mode to ensure that the lists of the important documentscan not be revised by non-authorized users; the terminal device credible security module is used for controlling the writing function of mobile devices of U disks, and the like; and the platform credible security module is used for preventing malicious programs from operating. The invention also relates to a terminal credible security method which comprises a user identity credible security step,a terminal device credible security step and a platform credible security step, wherein the user identity credible security step is used for setting the lists for storing the important documents andensuring that the lists of the important documents can not be revised; the terminal device credible security step is used for controlling the writing function of the mobile devices of U disks, and thelike; and the platform credible security step is used for preventing the malicious programs from operating.

The invention discloses a vehicle big data computing and unloading method based on a fog computing network. According to the invention, a more efficient and reliable computing environment can be provided for analyzing vehicle big data. Firstly, a fog computing network system architecture is provided, a network delay model is further established, then a task generation model is established, a fog computing resource optimization model is established, and finally a load balancing computing resource effective task unloading algorithm is used. Efficient Task Offloading Algorithm with Load Balancing, CRETOA) is used for managing computing resources for load balancing of the fog computing network, and a road vehicle terminal request computing task is allocated to the optimal fog computing resources.

A multipoint cooperative working method for reliable communication in a wireless Ad hoc network communication system relates to the wireless Ad hoc network technical field. The invention solves the problem that information transmission reliability is poor as only one route is used for information transmission in the existing wireless communication process. The method includes that: a node requesting cooperative distance measurement broadcasts a cooperative distance measurement request; a destination node writes in the address thereof and the address of a downriver node thereof if needing cooperation; after obtaining successful signal interaction with the destination node and the downriver node of the destination node, the node requesting cooperative distance measurement obtains the distance with the destination node and the distance with the downriver node of the destination node by detecting the cooperative distance measurement request message and acknowledgement signal of the destination node and those of the downriver node of the destination node; and if the two distance values meet the requirement of being less than the corresponding reliable transmission domain radius, the node requesting cooperative distance measurement sends an acknowledge message to the destination node. The invention is applicable to emergency response and communication recovery process after disaster.

The invention discloses a cloud simulation service method comprising the steps of: virtualizing hardware resources in a cloud simulation architecture; virtualizing software resources in the cloud simulation architecture; establishing a unified management platform in the cloud simulation architecture to manage the virtualized hardware resources and the virtualized software resources; and constructing a the professional model and a solver in the cloud simulation architecture. The method has the following advantages of using model sharing service, resource flexible scheduling and solver parallel computing as a core, scheduling tasks and distributing computing resources on demand, providing the professional model and the solver for engineering staff in the form of services by using service middleware, configuring on demand, providing a flexible and reliable computing platform for enterprises; and achieving high data security and high data reliability.

The invention relates to a computing method for circumferential stress of an absorber annular valve sheet, and belongs to the technical field of absorbers. No reliable computing method is put forward for circumferential stress of the absorber annular valve sheet in the prior art. The computing method for circumferential stress of the absorber annular valve sheet is characterized in that the following steps are adopted: 1) each constant term composed of the circumferential stress coefficient of a valve sheet is confirmed; 2) the circumferential stress coefficient G sigma theta r at any position of radius r is computed; 3) the circumferential stress sigma theta r at any position of the radius r of the absorber annular valve sheet is computed. By means of the computing method for circumferential stress of the absorber annular valve sheet, the circumferential stress sigma theta r at any position of the radius and the maximum circumferential stress sigma theta r max at the position of the inner circle radius ra can be accurately computed. The result of the ANSYS emulation proof proves that the computing method for circumferential stress of the absorber annular valve sheet is accurate, so that the reliable circumferential stress computing method is provided for splitting design and stress intensity check of the absorber annular valve sheet.

The invention relates to a computing method for circumferential stress of an equivalent structure circular sandwich valve plate of an absorber, and belongs to the absorber technical field. A reliable computing method for the circumferential stress of the equivalent structure circular sandwich valve plate of the absorber does not exist previously, and therefore the requirements of absorber modernized computer aided design (CAD) design and stress intensity calculation can not be met. The computing method for circumferential stress of the equivalent structure circular sandwich valve plate of the absorber comprises the following steps: (1), ensuring equivalent thickness of the equivalent structure circular sandwich valve plate; (2), ensuring thickness proportionality coefficient of the equivalent structure circular sandwich valve plate; (3), calculating circumferential stress coefficient of the equivalent structure circular sandwich valve plate on any radius r; and (4), calculating circumferential stress and maximum circumferential stress of the equivalent structure circular sandwich valve plate on any radius r. The computing method for circumferential stress of the equivalent structure circular sandwich valve plate of the absorber can accurately calculate the circumferential stress and the maximum circumferential stress of the equivalent structure circular sandwich valve plate on any radius position, and provides a reliable computing method for circumferential stress for absorber equivalent structure sandwich valve plate designs and stress intensity calculation.

The invention discloses an evaluation method of investment benefit of a power grid project, which comprises the following steps of: classifying the items to be evaluated; constructing an evaluation index system; establishing the graph model of the index and quantifying it; calculating index weights of the quantized index graph model; performing quantification and dimensionlessness of the indexes;constructing a comprehensive scoring model to evaluate the investment benefit. The invention provides a method for evaluating the investment benefit of a power grid project, the evaluation index system considering the functional characteristics of the project is constructed, a graph model index weighting method is proposed and the differential evaluation results of power network projects based onfunction classificaiton can be obtained through a scoring module; the method of the invention can scientifically and reasonably evaluate the benefit of the investment of the power network project, andcan reflect the investment benefit of the different functional projects more accurately and quickly, and the method of the invention is scientific and reliable, and the calculation process is simpleand clear.

The invention relates to a reliable multi-path aggregation routing algorithm based on energy balance, and belongs to the technical field of a wireless sensor network. The algorithm comprises the following steps: analyzing a network data transmission feature, and establishing a multi-hop convergence network rate estimation model by combining the density and location information of the node; selecting more AMN and less AMNs at event regions with low energy consumption rate and high energy consumption rate by using a node selection algorithm based on the space relevancy; designing an optimal pathsearch algorithm based on a forwarding node set, and designing the multi-path convergence routing in energy balance by adopting the algorithm, wherein the multi-path convergence routing comprises anoptimal main path for data collection and an optimal convergence path for each AMN node, and all convergence paths are converged on an aggregation node on the main path; monitoring the data to arrivethe aggregation node through the convergence path, and enabling the data to arrive a Sink node through the main path after the aggregation node accomplishes the data aggregation. Through the algorithmdisclosed by the invention, the network energy consumption can be effectively balanced, the network life is prolonged, and the event detection reliability is improved.

The invention relates to a computing method for equivalent thickness of hydraulic buffer isomorphic annular sandwich valve plates, and belongs to the technical field of buffers. In the prior art, the reliable computing method for the equivalent thickness of the hydraulic buffer isomorphic annular sandwich valve plates is not available, and thus the actual requirements for design, production and characteristic simulation modeling of the buffer can be not met. With adoption of the method, according to thickness and plate number of the annular sandwich valve plates with same material, equal inner diameter and equal outer diameter, the equivalent thickness h<e> of the sandwich valve plates, equivalent to that of a signal valve plate, can be computed accurately and quickly; through comparison with the ANSYS simulation result, the fact can be confirmed that the computing method for the equivalent thickness of the hydraulic buffer isomorphic annular sandwich valve plates is accurate and reliable, and further, the reliable computing method for the equivalent thickness of the isomorphic annular sandwich valve plates is provided for detachment design and stress intensity check of the buffer sandwich valve plates as well as characteristic simulation modeling of the buffer.

The invention discloses a method for extracting a rolling bearing fault feature based on EEMD and K-GDE. The method comprises the following steps: S1, measuring vibration of a rolling bear by using anacceleration sensor and a collector; S2, performing EEMD decomposition on a rolling bearing vibration signal; S3, calculating kurtosis indexes of essential modular functions; S4, calculating correlation coefficients between the essential modular functions and an original signal; S5, selecting an essential modular function with the largest kurtosis index and the largest correlation coefficient from all the essential modular functions to serve as a sensitive single component of next analysis; S6, selecting a value k from a value range, and calculating the envelop amplitude of the sensitive single component based on a k-GDE method; and S7, performing Fourier transform on the envelop amplitude to obtain a k-GDE envelop spectrum, and realizing fault diagnosis by matching a peak frequency and arolling bearing fault feature frequency. The method for extracting the rolling bearing fault feature based on the EEMD and the K-GDE has the effects of accurate and reliable algorithm, as well as simple, convenient and efficient calculation on the aspect of calculation of amplitude envelop.