279 results about "Consistency problem" patented technology

The invention relates to a method and a system for dynamically managing metadata of a distributed file system in order to solve the problems that a metadata management method cannot dynamically adjust the distribution of the metadata according to the load change, smoothly extend a metadata server, process the access to a hot content and well deal with the access to a single hot file. The method comprises that: the metadata server dynamically divides the distribution of the metadata on each metadata server according to the access condition of the metadata and manages the dynamically divided metadata according to the operation request of a client. The method and the system solve the problems of extensibility and load balance of the metadata server through dynamic division and the problem of consistency of the metadata through the management of the dynamically divided metadata.

The invention discloses a parallel structure and a control method for a photovoltaic power generation grid-connected inverter and belongs to the technical field of renewable energy sources. A topological circuit structure of the photovoltaic power generation grid-connected inverter is divided into a parallel structure of single-phase voltage type pulse-width modulation (PWM) inverters and a parallel structure of three-phase voltage type PWM inverters; and in the control method, an outer ring regulator of a control circuit of the parallel voltage type PWM inverters is independent based on a power grid voltage-oriented vector control technology in a control mode of voltage outer ring and current inner ring so as to form a common unified outer ring regulator; control strategies of various inverters are simplified into single closed loop current control so as to achieve the consistency of energy flow directions of the parallel voltage type PWM inverters and avoid ring current; and the parallel current sharing of the voltage type PWM inverters is realized. Therefore, multiple modules of the voltage type PWM inverters are connected in parallel to realize high-power modularized large-scale application.

A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and audio processor including a 3D graphics pipeline and an audio digital signal processor. A memory controller performs a wide range of memory control related functions including arbitrating between various competing resources seeking access to main memory, handling memory latency and bandwidth requirements of the resources requesting memory access, buffering writes to reduce bus turn around, refreshing main memory, and protecting main memory using programmable registers. The memory controller minimizes memory read/write switching using a “global” write queue which queues write requests from various diverse competing resources. In this fashion, multiple competing resources for memory writes are combined into one resource from which write requests are obtained. Memory coherency issues are addressed both within a single resource that has both read and write capabilities and among different resources by efficiently flushing write buffers associated with a resource.

A switched architecture for dual, independent storage controllers overcomes latency and coherency problems by an inter-controller command interchange scheme. The switched architecture permits a read or write command to be presented to either storage controller to effect data transfer on the same or the other storage controller. Communication between the two storage controllers is effected through internal Infiniband switches.

The invention discloses a copy number variation detection method based on next generation sequencing. The method comprises the following steps: pre-processing copy number variation data, constructing a sliding window, calculating of statistics, implementing a replacement policy, constructing zero distribution, and carrying out performance evaluation of an algorithm. The performance evaluation of the algorithm comprises the steps of judging whether a relatively high correct positive rate can be acquired by the algorithm under the condition that a false positive rate is controllable, evaluating whether the algorithm can relatively accurately estimate a p value or not, detecting a boundary detection capability of copy number variation, and analyzing the calculation complexity of the algorithm. With the adoption of the copy number variation detection method, the problem of copy number variation detection errors, caused by the fact that sequencing platforms and sequencing levels are different, is solved, and a result is relatively accurate; data is normalized by utilizing characteristics of a multi-peak frequency histogram, so that a normal region and a copy number variation region are accurately divided; and a new model is established by a comprehensive effect of relevance between a variation reads number and a variation site, so that the inconsistency problem is solved, and the remarkable level of copy number variation is objectively estimated.

Reducing coherency problems in a data processing system is provided. Source code that is to be compiled is received and analyzed to identify at least one of a plurality of loops that contain a memory reference. A determination is made as to whether the memory reference is an access to a global memory that should be handled by a direct buffer. Responsive to an indication that the memory reference is an access to the global memory that should be handled by the direct buffer, the memory reference is marked for direct buffer transformation. The direct buffer transformation is then applied to the memory reference.

The invention discloses a distributed file system architectural method supporting mass data access. The method is based on a distributed Hash table, and access nodes are obtained by conducting Hash mapping on a file path. By the adoption of the fully distributed type non-centralized architectural design, new nodes can join a cluster after several times of communications. A Kademlia algorithm is adopted for addressing among the nodes, and a routing table is divided and the distance between the nodes is obtained through exclusive-or operation to achieve skip of the most adjacent nodes. A leader is selected through a PaxosLease algorithm to handle the mapping operation on the nodes so as to solve the consensus problem. Block storage of fixed size is conducted on actual data of files, and redundant backup is conducted on the multiple nodes, so that the requirements for safety and distributed calculation are met. When an architectural system generated according to the architectural method processes mass files, the processing efficiency can be remarkably improved, and the good effect can be achieved in the environment with the low latency requirement.

The invention discloses the optimal consistency control method and system of a nonlinear multi-agent system. The method is characterized by establishing a reference behavior model according to the individual dynamic characteristic of a heterogeneous multi-agent system, and using a leader-follower control model to form a multi-agent system formed by reference behavior models; then, constructing a dynamic graph game global error dynamical model according to the network topology structure of multiple agents, defining a multi-agent local performance index function, and according to the global Nashequilibrium, acquiring a Bellman optimal equation; and then, under the condition of only using local agent information, using an execution-evaluation execution network framework mode based on value function approximation to carry out online iterative learning, and acquiring an optimal consistency protocol to achieve the consistency of each reference model behavior. Compared with the prior art, byusing the method and the system of the invention, under the condition of guaranteeing optimal control performance, the consistency problem of the complex multi-agent system can be high-efficiently solved, and an actual application value and high scalability are achieved.

A multi-core processor configured to improve processing performance in certain computing contexts is provided. The multi-core processor includes multiple processing cores that implement barrel threading to execute multiple instruction threads in parallel while ensuring that the effects of an idle instruction or thread upon the performance of the processor is minimized. The multiple cores can also share a common data cache, thereby minimizing the need for expensive and complex mechanisms to mitigate inter-cache coherency issues. The barrel-threading can minimize the latency impacts associated with a shared data cache. In some examples, the multi-core processor can also include a serial processor configured to execute single threaded programming code that may not yield satisfactory performance in a processing environment that employs barrel threading.

The invention relates to a method for detecting sensitive information of an e-government system. Various detection algorithms, including the detection algorithm based on a regular expression model, the detection algorithm based on a vector space, the detection algorithm based on a boolean model and the detection algorithm based on a probability model are fused in the method for detecting the sensitive information based on a D-S evidence theory. The D-S evidence theory is firstly utilized to fuse the values of different keywords in the same query acquired by the algorithms, and then is utilized to fuse the trust values acquired by different algorithms, thereby acquiring a sensitive degree of an information detection object. According to the method for detecting the sensitive information based on the D-S evidence theory provided by the invention, the advantages of the algorithms in the information detection of the e-government system are comprehensively utilized, the problems of the lowrecall ratio and precision ratio of a single algorithm and the inconsistency problem of detection results between different algorithms are solved, and the sensitive information in the e-government system is efficiently prevented from being stored and revealed in a level-skipping form.

The invention discloses an energy transfer two-way balancing system based on a power inductor and a control method of the energy transfer two-way balancing system based on the power inductor. The energy transfer two-way balancing system based on the power inductor comprises a data acquisition module, a master control module, a communication module, a balancing module and a driver module, and a two-way balancing circuit topology structure which uses the power inductor as an energy transfer medium is selected. According to the general balancing thinking of the energy transfer two-way balancing system based on the power inductor and the control method of the energy transfer two-way balancing system, the data acquisition module carries out real-time detection on voltage of batteries in a battery pack and electric current of buses in the battery pack, and identifies the working state of the battery pack, inconsistency judgment is carried out through balance variables determined in advance and balance indexes determined in advance, balancing is carried out according to an established control strategy when balance conditions are met, the states of the batteries are continuously monitored, and balancing is stopped until stop conditions are met. Energy can be transferred from the battery with higher voltage to the battery with lower voltage and adjacent to the battery with the higher voltage through control over a switch of an MOSFET corresponding to the battery with the higher voltage, and the magnitude of balanced current is related to the closing time of the corresponding MOSFET. The energy transfer two-way balancing system based on the power inductor can carry out pending balancing, charging balancing and discharging balancing, achieve efficient and comprehensive balancing, and finally solve the problem that the batteries are not consistent in the process of use.

The invention discloses a processing method of data consistency, which comprises the following steps: testing the consistency of differential data according to the comparing result or differential list of net data; combining synchronous rule to generate synchronous data to transmit to the relative net; executing data adding/deleting/repairing request of synchronous rule consistency at net; eliminating the consistent net data according to the eliminated data difference. The invention can clean the rubbish data of net in time, which improves the resource utility.

The invention discloses a data migration system and method. The data migration system is universal for an isomorphic database and an isomerous database and is a complete data migration system which can perform full migration in a shutdown mode and a non-shutdown state. A full verification function performed after full migration is provided, and therefore a user can discover the problem of inconsistency in the migration process in time. An incremental migration function and an incremental verification function in the non-shutdown state are provided, so that newly-added data is synchronized in time, and real-time verification is performed on increments to discover the problem of inconsistency of incremental data in time.

The invention discloses a method for correcting color between images. The method comprises the steps of inputting two images including a first image and a second image having a common public area; determining the linear relationship on a color channel between the first image and the second image by respectively acquiring the color average value of the color channel in the common area of the first image and the second image; and correcting the color value of pixels on the full image of the first image or the second image according to the linear relationship. The invention also discloses a device for correcting color between images. The method and the device provided by the invention can solve the consistency problem of illumination and color tone in panoramic image generation, image registration and image fusion, and can be specifically used in picture processing software of PC (personal computer) terminal, mobile phone and tablet PC, with the advantages of stable correction effect and wide application.

The invention provides a stepwise utilization method of decommissioned batteries. The stepwise utilization method comprises decommissioned battery sorting, decommissioned battery grouping and formingan energy storage system by the decommissioned batteries. The invention further provides a stepwise utilization system of decommissioned batteries, comprising an energy storage system and an energy management unit for controlling the energy storage system to perform charging and discharging, the energy storage system is composed of a plurality of battery clusters with a working voltage of 570 to 832.2V, and each battery cluster comprises a plurality of battery packs connected in parallel; and each battery pack comprises decommissioned batteries connected in series, a PCS and a monitoring unit.According to the stepwise utilization method and system provided by the invention, the consistency problem of the decommissioned batteries is solved through string distributed architecture, which greatly simplifies the process, can not only refine the management of energy storage batteries, but also can ensure the battery consistency to the greatest extent. In addition, the long-term stable operation of the entire system can be ensured, and the safety and the service life of the energy storage system are also objectively improved; and meanwhile, the stepwise utilization cost is reduced by thestepwise utilization method and system provided by the invention, so that the stepwise utilization method and system provided by the invention can be widely used, promoted and applied.

The invention brings forward a cloud storage system based on synchronization agents and mixed storage. The system comprises (1) a user interface module having an application program, a Web console and a synchronization agent; (2) a virtual file module responsible for managing storage of object metadata; and (3), a rear end management module responsible for controlling storage equipment and other system functions. The user interface module, the virtual file module and the rear end management module employ a single REST interface to carry out communication. According to the invention, high consistency of data between a client and a server can be effectively solved; the high availability of cloud storage service can be raised; and problems of security of user data uploaded to and stored in public cloud can be solved.

The invention belongs to the technical field of photovoltaic power generation, and discloses a photovoltaic energy storage battery power generation system and a control method. According to the power generation system, photovoltaic batteries and matched single energy storage batteries form photovoltaic energy storage battery modules; a certain number of modules are connected in series according to the requirements; and module strings can be connected with one another in parallel to meet the requirements of loads on power. The control method comprises the following steps: controlling cut-in and cut-out of single photovoltaic batteries, single energy storage batteries and the modules thereof by monitoring voltages, currents, temperatures and the like of single photovoltaic battery modules and singe energy storage batteries; controlling cut-in and cut-out of the photovoltaic energy storage battery modules by monitoring the voltages of series branches; and controlling starting and stopping of the overall system by monitoring a busbar voltage. The photovoltaic energy storage battery power generation system and the control method can solve the problems of the 'shadow effect' and inconsistency of the photovoltaic batteries, the inconsistency and equilibrium management of an energy storage battery pack and energy management of photovoltaic energy storage.

The invention discloses a detecting method of data consistence, which comprises the following steps: gathering data of net element to keep data consistent; obtaining the data with the same standard format through predisposing the data; analyzing and comparing the data; obtaining the data difference of each net element; generating difference list. The invention can detect and record the inconsistence of data actively and timely, which is fit for each kind of charging system and network account business domain.

The invention relates to an infrared photoelectric orientation detection and remote control tracking guide system. A multi-path time sharing transmission infrared orientation signal, single-path serial reception detection and remote control guidance technology are employed, inconsistency of characteristic parameters of components are avoided when multiple photoelectric receivers are employed, and measurement accuracy and a measurement distance are improved. A guide end and a mobile end are included, an array is formed by multiple infrared transmitting tubes on a motion carrier of the mobile end, multi-path infrared signals for orientation detection are sequentially transmitted in a time sharing mode; the guide end is equipped with a high sensitivity infrared receiver and serially receives and detects parameters of each path of infrared signals, azimuth information is acquired after data calculation processing to form a control instruction signal, the control instruction signal is sent to the mobile end through a remote control emitter to control tracking and guiding of the motion carrier; a visible light guide spot can be utilized at the guide end to indicate a guide position and a direction; a synchronization signal is transmitted between the mobile end and the guide end which maintain a synchronization corresponding relation for transmission and reception of each path of signals.

The amount of position error written into a servo burst pattern can be reduced by using additional media revolutions to write the pattern. Where the edges of two servo bursts are used to define a position on the media, trimming the first burst and writing the second burst on separate revolutions of the media will result in a different amount of position error being written into each burst. The end result will be a reduction in the overall error in position information. In order to further reduce the position error given by a burst pair, each burst also can be trimmed and/or written in multiple passes. Additional bursts can also be written, such as for each data track centerline. The overall error in position should decrease as the number of passes used to write a burst pair increases. Also, additional bursts can be written in separate passes in order to further reduce position error while avoiding coherence concerns. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

The invention relates to an active equalization circuit for a multi-monomer series battery. The active equalization circuit comprises a DC/DC (direct current) convertor with an isolating transformer and a switch array, wherein the switch array consists of a set of positive pole switches of which one ends are respectively connected with the positive pole of each monomer battery and a set of negative pole switches of which one ends are respectively connected with the negative pole of each monomer battery, the other ends of the positive pole switches are in short connection with one another, so that a positive pole public end can be formed, and the other ends of the negative pole switches are in short connection with one another, so that a negative pole public end can be formed; and two input ends of the DC/DC convertor are respectively and correspondingly connected with the positive pole public end and the negative pole public end by a pair of input switches, and two output ends of the DC/DC convertor are respectively and correspondingly connected with the positive pole public end and the negative pole public end by a pair of output switches. Due to the scheme, the direct two-way energy transfer between any two monomer batteries can be realized, and the problem such as the inconsistency between the capacity and the electric quantity of the monomer batteries can be solved.

This inventing relates to one glue electrolyte with high energy and safety lithium ion dynamic battery design and production process, which uses one series of new materials and technique, such as spot polymer to process glue polymer electrolyte, spot electrochemical publicizing to process glue polymer electrolyte and high intensity metal coating materials to process compound materials as battery shell.

The invention discloses methods for routing decision and flow table consistency optimization in a software defined satellite network and relates to the field of software defined satellite networks. The method for flow table consistency optimization comprises the following steps of firstly, monitoring the global state of the satellite network in real time through network awareness, maintaining topological graphs in the satellite network at different moments and updating the topology state and events timely; secondly, combining a routing decision based on an issued delay and a routing decision based on path similarity, wherein the needed issued delay and the write delay are smaller, so that the total delay of a flow table updating process is reduced; and lastly, reducing the influence of the time delay from the switch to the a controller on the flow table inconsistency through adjusting an issued order of a switch, and reducing the number of the issued flow table entries to reduce the write time of the flow table entries through carrying out classification processing on the old and new flow tables, thereby reducing the total delay for flow table updating. According to the methods, a problem of inconsistency of flow table updating of the software defined satellite network is better improved.