236results about How to "Avoid ability to decline" patented technology

The invention discloses an optical network self-adapting route system for a low / middle orbit double-layer satellite. The system is connected with a satellite-ground access segment by a space segment route, a middle orbit satellite managing layer consists of at least four manager satellites and a manager satellite, the manager satellites and the manager satellite manage a low orbit satellite route layer directly, and the low orbit satellite route layer consists of one main proxy satellite, four secondary proxy satellites and at least 8 ordinary satellites which are connected. The calculating method comprises topological parameters; determination of the life span report of the access to the middle orbit satellite by the low orbit satellite; main proxy node and link; link time delay among satellites; time delay report of the low orbit satellite; time delay report of the middle orbit satellite; wavelength usage rate business load; and the calculation of route cost function. The optical network of the double-layer satellite is divided into an access network with highly dynamic change and a space segment core network of periodic change, the access network takes charge of network convergence between the space segment and the ground network, and the space segment uses a laser link among satellites to relay until reaching a service target satellite.

The invention provides an extraction method of semantic information of video images, and relates to the technical field of video description and annotation. Firstly, frame sequences of a video are extracted according to a certain inter-frame space, a feature vector of each frame image is extracted according to a convolutional neural network, the feature vectors are regarded as input of a LSTM network encoder, output of each time step of the LSTM network encoder and output of the previous time step of a LSTM network decoder are regarded as input of an external storage EMM, and contents of a stored matrix in the external storage EMM are updated; the external storage EMM outputs two reading vectors which are regarded as input vectors of decoding and encoding of the subsequent time step respectively. Through two LSTM network dynamics, reading and writing of the external storage EMM are controlled, and storing of the feature vector of each frame image of the video at the encoding phase is achieved; at the decoding phase, through forecasting of feedback of words, the output of the subsequent time step of the external storage is adjusted, so that when an annotation of the video is generated, the feature vectors of a context are adjusted according to a generated word sequence.

The invention discloses a massive web log data query and analysis method based on Hadoop and Hive by means of high reliability, high expansibility, high efficiency and high fault tolerance of a Hadoop and Hive distributed computing platform. The method includes the following steps that data of each data source are analyzed; the data are loaded into a database; HiveQL sentences are received; the received sentences are optimized to obtain a primary map result; the received sentences are converted into a Map Reduce task, the task is executed, and a query result is stored; the data are segmented; the data are analyzed and dug; the data are loaded into a Mysql database. According to massive web log data, precise query and data analysis are achieved, expansibility and effectiveness of storage, query and analysis of the massive data are achieved, and the problem that due to uneven job distribution caused by data skew, overall performance is reduced is avoided.

The invention relates to a high-dielectric-constant resin composition, as well as a prepreg and a copper-clad laminate (CCL) which are manufactured thereby. The prepreg manufactured by the high-dielectric-constant resin composition comprises high-dielectric-constant glass fiber fabric and a high-dielectric-constant resin composition subjected to impregnation drying and then attached to the high-dielectric-constant glass fiber fabric. The CCL manufactured by the high-dielectric-constant resin composition comprises at least one overlapped prepreg and copper foils pressed and coated on both sides of the overlapped prepregs. The CCL manufactured by the high-dielectric-constant resin composition has the performances of high dielectric constant, low dielectric loss, high glass transition temperature, high peel strength and the like and can meet the performance requirement of the high-dielectric-constant antenna substrate.

The invention relates to a data access control method and a data access control device. The method comprises the following steps of: receiving an access request for a database, wherein the access request includes data object information; determining identification information of data records, which are referred by the access request, in the database on the basis of the data object information; determining an access request quantity corresponding to the identification information; and determining whether to refuse the request or not according to the access request quantity. The technical scheme according to the invention has the advantages that the access to the database can be controlled at the fine flow control granularity, i.e., the access control is performed for each record in the database, so that the problem of performance reduction of the whole database due to the overheat of partial records is avoided. The access request quantity on the database is operated and controlled by using a memory queuing mechanism and a waiting time-out mechanism; the direct-refuse and rigid-uniformity crude solving mode is avoided, so that the system resource and flow rate loss is reduced; the use by a user is convenient; and the user experience is enhanced.

A method for forming a lithium ion secondary battery comprises the step of charging the lithium ion secondary battery, wherein the process of charging is at least partially carried out under a vacuum condition. The method ensures that the generated gas of the battery can be discharged at any time during the process of charging, so as to completely avoid the problems with the expansion and the deformation of the battery casing caused by the accumulation of the gas generated during the process of charging and with the performance reduction caused by the accumulation of the gas, so that the formed battery has the advantages of high capacity and good cycle performance.

The embodiment of invention provides a data detection method and a data detection device for firewalls. The data detection method for the firewalls comprises the following steps of: receiving application data; acquiring application information in the received application data; according to the application information and an application identification table, judging a corresponding application protocol type of the application data; according to the application protocol type, inquiring a threat detection configuration item so as to judge whether the application data need to be subjected to threat detection; and if the application data do not need to be subjected to threat detection, forwarding the application data. Due to the adoption of the data detection method and data detection device for the firewalls disclosed by the embodiment of the invention, the problem that the performance of a firewall degrades because all application data are sent to a detection processor to be subjected to detection is avoided, and the detection effect of the firewall on the application data is improved.

The invention relates to the field of smart homes, and discloses a smart home system and a data interaction method thereof. In the invention, the smart home system includes several smart home nodes. A terminal accesses the smart home system through a smart home node. Each smart home node has a broadcast monitoring state and a connecting state; if the smart home node is connected with the terminal, the smart home node is switched from the broadcast monitoring state to the connecting state; if the smart home node is disconnected from the terminal, the smart home node is switched from the connecting state to the broadcast monitoring state; in the broadcast monitoring state, the smart home node sends broadcast packets to other smart home nodes or terminals and monitors information sent by the other smart home nodes; and in the connecting state, the smart home node also receives and forwards data packets of the terminal. According to the smart home system and the data interaction method thereof, the flexibility, the validity and the interference immunity of data transmission in the smart home system are raised.

The invention provides a satellite communication system resource scheduling method combining beam hopping and precoding. The method comprises the following steps: establishing a beam hopping time slotallocation target function based on service priority; obtaining a time slot allocation optimal solution by using a convex optimization method, and obtaining a time slot allocation matrix of each wavebeam according to the optimal solution; analyzing the time slot allocation result of each wave beam, and finding out the wave beams with serious same-frequency interference according to the same-frequency multiplexing distance; designing precoding of a transmitting end, and performing interference suppression and elimination on beams with same-frequency interference in the beam hopping resource allocation scheme; according to the resource scheduling method provided by the invention, dynamic scheduling of satellite resources is satisfied, performance reduction caused by same-frequency interference is avoided, and the resource utilization rate and the system capacity are improved.

The invention discloses a neural network control system and method of a magnetic suspension molecular pump. The neural network control system comprises a data acquisition and storage unit and a regulation and control unit, wherein the data acquisition and storage unit collects and stores the installation angle alpha and the installation angle beta of each preset installation position, rotor position deviation E and the rotor position deviation change rate EC as well as radial magnetic bearing bias current, axial magnetic bearing bias current and a PID (proportion integration differentiation) control parameter for causing the molecular pump to stably operate; the regulation and control unit trains a neural network model according to the parameter obtained by the data acquisition and storage unit; when the magnetic suspension molecular pump is installed at any position, the current alpha, the beta, the E and the EC obtained by measurement and calculation are input to the trained neural network model; the neural network control method is used for obtaining the radial magnetic bearing bias current, the axial magnetic bearing bias current and the magnetic bearing PID control parameter of the magnetic suspension molecular pump at the time. Thus, the neural network control system can stably work when the molecular pump is installed at any position, and is suitable for solving the technical problem of installing the magnetic suspension molecular pump at any position.

The invention provides a composite lithium supplement diaphragm and a secondary battery thereof, the composite lithium supplement diaphragm comprises a porous base membrane, a lithium-containing layer is arranged on one side of the porous base membrane, the lithium-containing layer comprises lithium sources, inorganic ceramic powder and a binder, the lithium sources are in gradient distribution in the thickness direction of the lithium-containing layer, and the mass ratio of the lithium source close to one side of the surface of the porous base membrane is relatively low. According to the invention, the irreversible active lithium loss in the first charging process can be effectively compensated without additionally supplementing lithium on the surface of the positive pole piece or the negative pole piece, so that the energy density and the cycle life of the lithium ion secondary battery can be remarkably improved. The lithium source in the lithium-containing layer of the composite diaphragm is in gradient distribution, and the active lithium content is relatively low on one side close to the surface of the base membrane, so that the contact area of metal lithium powder or a lithium-containing compound and the like with the base membrane can be effectively reduced, the risk that micropores of the base membrane are possibly blocked is reduced, and the performance of a battery cell is further improved.

The invention provides a method for inserting and unloading a transmission control protocol (TCP) proxy and service gateway equipment. The method comprises the following steps of: during establishment of TCP connection, forwarding a TCP connection establishing message between a TCP client and a TCP server via an L3 layer, and recording option information and serial number information of the TCP connection establishing message; after the TCP connection is established, judging the received massage according to an agent policy; forwarding the message not needing the agent determined according to the agent policy via the L3 layer, and updating the recorded serial number information according to the serial number information of the received message; for the message needing the agent determined according to the agent policy, generating a client pseudo-socket and a server pseudo-socket according to the recorded option information and serial number information; and terminating the received message by adopting the client pseudo-socket and the service end pseudo-socket, and processing the terminated message via an L7 layer, and forwarding the processed message. By the method, the system performance can be improved.

The invention discloses a 64-bit floating-point integer-fusion operation group which support partial deposit and conditional execution. It includes one or more 64-bit floating point / integer-fusion arithmetic unit, conditional execution unit, component interconnect structure and control unit. The computing unit is connected with conditional execution unit by interconnect structure which also is used to transfer data among units. The storage address of operation group is made up of several independent address spaces, and the local operations can indirectly visiting each address space by unified controller. There are specialized instruction register to storage compiled order. The controller send the compiled instruction to each function unit of the corresponded computing group at the same time when the program running, then each group receive instructions and run it by SIMD and storage the result in the same LRF or output.

The invention relates to a photovoltaic power generation system employing a virtual grounding technology. The system comprises M photovoltaic inverters which are parallelly connected to generate power. The output ends of all photovoltaic inverters are connected with the input end of a same isolation transformer; the input end of each photovoltaic inverter is connected with at least one solar panel. The system is characterized in that an isolation direct-current voltage source used for increasing voltage applied to the ground by a cathode of the current photovoltaic inverter is connected between a cathode of only one photovoltaic inverter and the ground, among the M photovoltaic inverters; or an isolation direct-current voltage source used for decreasing the voltage applied to the ground by an anode of the current photovoltaic inverter is connected between the anode of only one photovoltaic inverter and the ground, among the M photovoltaic inverters. A solution to Potential induced attenuation of solar panels is provided for the photovoltaic power generation system with the multiple parallel photovoltaic inverters, the problem that unit performance decrease caused by PID (plasma-induced charging damage) effect can be effectively prevented, and the system is simple, feasible and low in cost.

The invention discloses a gear-shifting correction system for an automatic transmission and a correction method for the gear-shifting correction system. The gear-shifting correction system is characterized by comprising a signal conditioning module, a signal acquiring and processing module, a processor and a solenoid valve drive module, wherein the processor comprises a travelling working condition identifying module, a driving intension identifying module, a decision-making module and a gear-shifting correction module. The correction method comprises the following steps: carrying out signal conditioning and acquiring on a sensor signal so as to acquire a signal required by the travelling working condition identifying module and the driving intension identifying module; carrying out travelling working condition and driving intension identification and split-flow processing, thereby obtaining a corrected object and an uncorrected object; and setting a response priority sequence and a corresponding gear-shifting correction parameter and a gear-shifting correction value of the of the corrected object, carrying out gear-shifting correction, and storing basic gear-shifting control parameters. According to the gear-shifting correction system and the correction method, gear-shifting control needs for different travelling working conditions and driving intensions can be met, and traveling safety, dynamic property and fuel economy of vehicles are improved.

The invention provides a preparation method of organic fluorine modified hyperbranched water-based polyurethane. The method comprises the following steps: (1), synthesizing water-based terminal hydroxyl hyperbranched polyurethane core; (2), synthesizing a double bond end capped linear polyurethane prepolymer through diisocyanate, low polymer divalent alcohol, a chain extendor, an end-capping reagent and the like; (3), grafting linear polyurethane onto terminal hydroxyl hyperbranched polyurethane; (4), leading a fluorine element onto a polymer through an emulsion method, so as to obtain the organic fluorine modified hyperbranched water-based polyurethane. According to the organic fluorine modified hyperbranched water-based polyurethane provided by the invention, raw materials are cheap and readily available, and are wide in sources, the synthesis process is simple, and industrialized production is facilitated. The organic fluorine modified hyperbranched water-based polyurethane is appropriate to be used independently, can be matched with other water-based resins, can be applied to the fields of water-resistant paints, environment-friendly water-based adhesives, water-based paints and the like, and has a broad application prospect.

The invention relates to a lithium nickel cobalt aluminate composite material and a preparation method and application thereof. The lithium nickel cobalt aluminate composite material comprises lithium nickel cobalt aluminate and a lithium iron phosphate material coating the surface of the lithium nickel cobalt aluminate, wherein lithium ferric manganese phosphate and the lithium nickel cobalt aluminate are glued together through polytetrafluoroethylene. By the lithium nickel cobalt aluminate composite material, the problem of battery bulging can be solved. The preparation method of the lithium nickel cobalt aluminate composite material comprises the following steps of spraying a polytetrafluoroethylene emulsion on the surface of lithium nickel cobalt aluminate powder, fully mixing, adding lithium iron phosphate powder and fully mixing again to obtain a mixed material; and drying the mixed material to remove moisture, and then carrying out crushing to obtain the lithium nickel cobalt aluminate composite material. By the method, secondary sintering on the material is not needed, the problem of performance reduction of the lithium nickel cobalt aluminate composite material caused by sintering is solved and application is facilitated. Furthermore, the invention further provides a positive pole piece comprising the composite material and a lithium-ion battery comprising the positive pole piece.

The invention relates to a method and a system for virtualized resources with optimized performance. The method includes that the operating performance of a physical server, the operating performance of a client virtual machine and a system call event of the client virtual machine are monitored on a virtual machine monitor layer at first; data are processed for the monitored system call event in a secure virtual machine according to the monitored operating performance of the physical server, the monitored operating performance of the client virtual machine and priority and security policies; and a control instruction is transmitted after the data are processed so as to control the system call event specific to operation for calling the virtualized resources. The method and the system for monitoring the virtualized resources with the optimized performance have the advantages that integral operating and security states of a system can be effectively monitored, and excellent user experience can be realized.

The invention relates to self-adaptive control system and method of a magnetic suspension molecular pump. The control system comprises a data acquisition storage unit and an adjusting control unit, wherein the data acquisition storage method used by the data acquisition storage unit comprises the steps of acquiring and storing a mounting angle alpha and a rotating angle beta of the molecular pumpwhen being mounted at a plurality of preset positions in the storage debugging process and acquiring bias current of a radial magnetic bearing, bias current of an axial bearing and a proportion integration differentiation (PID) control parameter which ensure that the molecular pump stably operates at each preset mounting position by the experiment. The adjusting control method used by the adjusting control unit comprises the steps of estimating the mounting angle alpha and the rotating angle beta of the molecular pump according to the static work current when the magnetic suspension molecularpump is mounted at a certain position and reasonably adjusting the bias current of the radial magnetic bearing of the molecular pump, the bias current of the axial magnetic bearing and the PID control parameter to ensure that the molecular pump can stably work at any mounting position.

The invention discloses a preparing method for a corrosion-resistant liquid cooling heat dissipation cold plate and aims at providing a cold plate preparing method which is free of tedious treatment before welding and has prominent corrosion-resistant capability and long-term work reliability. According to the technical scheme, the two sides of a bottom transverse pipe commonly communicated serve as the starting points respectively, two sets of parallel pipes are longitudinally arranged continuously in a bent manner, and the bending radius of bent circular arc rings on the two longitudinal sides is larger than the distance between every two parallel pipelines; the free ends of each set of parallel pipes are fixedly connected through respective connector flanges; and the two sets of parallel pipes are fixed, clamped and positioned through pipeline clamping tools which are longitudinally arranged at intervals, die positioning plates with screw holes are adopted, wax patterns wrapping runner titanium pipes and connector flange assemblies are clamped between the two die positioning plates, and the runner titanium pipes and the connector flange assemblies are put into a smelting furnace, and a rectangular flat plate is formed through lost foam casting. The preparing method solves the problem that during traditional cold plate welding, a welding seam is prone to cracking, and consequently a cooling agent leaks.

The invention provides a path selection method, a path selection device and a storage area network, and relates to the technical field of selection. The path selection method comprises the following steps in sequence: selecting the transmission performances of some or all paths; determining the type of each path based on the transmission performances of the paths; and distributing the transmission paths for IO (Input / Output) current according to the types of the paths. According to the method, the device and the storage area network, the types of the paths are timely and correctly judged, and the transmission paths are dynamically distributed for the IO current accordingly; the path of the second performance can be given or not given the IO current as requirement, and the IO current which is most suitable for being transmitted on the path of the second performance can be timely switched back once the path of the second performance is returned to normal, thus multi-path management can be effectively carried out well, the problem that the performance of the user service is possibly reduced can be avoided, the best service can be provided for a user to the maximum, and the performance and reliability of service transmission can be improved.

The invention proposes a method for changing a center node of a star-type ad hoc network. The method comprises the following steps: access nodes carry out measurement based on a center node and reportmeasurement information to the central node periodically, wherein the measurement information includes signal strength and quality information; the center node determines whether to start center nodeselection according to the number of access nodes connected to the network currently as well as a network topology change frequency; and if so, calculation is carried out based on the measurement information of all access nodes to select a new center node; and according to the new center node, whether center node changing is carried out is determined. According to the invention, because of adaptive selection of a proper node as a new center node, a problem of performance degrading after continuous changing of the topological structure of a star-type ad hoc network is solved, so that the robustness of the bottom network of the universal network is improved.

The invention relates to the technical field of PBAT / PLA (poly(butyleneadipate-co-terephthalate) / polylactic acid) blend compatibilization, particularly a controllable-degradation PBAT / PLA composite film. The controllable-degradation PBAT / PLA composite film comprises the following components in parts by weight: 50-60 parts of PBAT, 10-30 parts of PLA, 10-20 parts of calcium carbonate, 0.5-2 parts of antibacterial compatibilizer and 0.5-2 parts of tetrabutyl titanate. The mass ratio of the PLA to the calcium carbonate is (1-3):1. The PLA / calcium carbonate proportion is strictly controlled and restricted within the range of (1-3):1; and the PLA / calcium carbonate proportion can be regulated to control the degradation start time of the PBAT / PLA composite film at 60-90 days and control the complete degradation time at 120-150 days.

The invention provides a method, a device and a system which are used for pushing popup pages to a user end, and the popup page pushing method comprises the following steps: a staticizing system converts a dynamic page that needs to be pushed to the user end into a corresponding static page; and the staticizing system stores the static page into an independent staticizing server, and a popup promotion system pushes the static page in the staticizing server to the user end. Compared with the prior art, in the embodiment of the popup page pushing method, device and system, the static page is pushed after staticization to the user end, thus reducing the pressure and influence on the server caused when the dynamic page is pushed to the user end, and consequently when the popup page is pushed to the user end with high concurrency, the performance of the server can not be influenced and the server paralysis problem is further avoided as the static page is obtained from the staticizing server and then pushed by the staticizing server.

The invention discloses a buffering device with efficient energy-absorbing performance. The buffering device comprises a magneto-rheological torsion damper and a motion conversion mechanism used for converting linear motion generated by vibration into rotation to make the magneto-rheological torsion damper inhibit the vibration; the motion converting mechanism is a ball screw rod pair structure and comprises a screw rod used for bearing a vibration load and a nut used for converting linear motion of the screw rod into rotation, and the nut is fixedly connected to a rotary shaft of the magneto-rheological torsion damper and rotates synchronously; the screw rod coaxially penetrates through the rotary shaft and is cooperatively connected with the nut. Reciprocating vibration shock can be converted into stable rotation, and stable damping in the whole process is achieved; meanwhile, the overall size of the device can be effectively reduced, the design is simple, and requirements of precision and miniaturization for an instrument are met.

The present invention discloses a gateway group method and system based on an SDN framework. The system comprises: a control plane module used to receive gateway group configuration information and send the gateway group configuration information to a network bridge management module; the network bridge management module used to create a network bridge according to the gateway group configuration information and trigger a network bridge adding event to inform a flow table processing module; and the flow table processing module used to push a flow table to an OpenvSwitch connected to a standard southbound interface of the SDN framework by the standard southbound interface of the SDN framework to complete the issuing of the flow table after monitoring the network bridge adding event. The flow table issued by a gateway node is responsible for the forwarding of the north-south traffic. The flow table issued by a calculation node contains an OpenFlow group flow table, which is responsible for the forwarding of the virtual machine traffic from the calculation node to the gateway node. Through a gateway group, the efficiency of the message processing is improved and the problems of performance degradation and low error redundancy and complex user configuration caused by the north-south traffic in the traditional single node gateway processing data center are solved.

The embodiment of the invention provides a directional voice enhancement method. The method comprises the following steps: dividing a space into n intervals by using a microphone array of m microphones, and performing signal directional enhancement on the n intervals; collecting voice signals of n channels in the n intervals; and inputting the voice signals of the n channels into a channel selection module, determining the parameter sizes of the voice signals of the n channels based on a neural network if no specified voice reception interval exists, determining a directional voice reception interval in the n intervals, and determining the voice signals of the channels corresponding to the directional voice reception interval as enhanced directional voice. The embodiment of the invention also provides a directional voice enhancement system. According to the embodiment of the invention, the problem of performance reduction possibly caused by DOA calculation is avoided, and a better noise reduction effect can be obtained by utilizing the advantage that the neural network is superior to a traditional noise estimation algorithm.

The invention discloses a method for rapidly implementing action of an emergency protective system of a steam turbine. The method is characterized by comprising the following steps: processing a parameter digital quantity signal of a monitored steam turbine through a switching value input channel; directly sending the signal into a complex programmable logic array; performing given logic judgment on the signal and directly outputting a tripping signal to a switching value output channel from the complex programmable logic array; and switching on a tripping electromagnetic valve, wherein the complex programmable logic array comprises a complex programmable logic apparatus and an on-site programmable gate array. The method increases response speed of the steam turbine in case of an abnormal situation, prevents performance degradation of huge steam turbine system equipment and major accident occurrence and plays a decisive and enormous role in improving safety of a steam turbine system, prolonging service life of hardware and the like.

The embodiments of the invention disclose methods for realzing memory sharing in aggregation virtualization. The methods comprise the following steps: a cache consistency processor receives a memory processing command sending by a virtual machine manager of a host; if the memory processing command is cache state updating information, the cache consistency processor updates a local cache consistency catalog according to the cache state updating information; or, if the memory processing command is a memory access request of a virtual machine on the host, the cache consistency processor performs cache consistency processing and accesses a memory corresponding to memory address information in the memory access request. The memory processing command is sent to the cache consistency processor through the corresponding virtual machine manager of the host, and the cache consistency processing is carried out by the cache consistency processor, so system processing performance is improved, and memory access time is shortened. The embodiments of the invention further disclose equipment and a system for the memory sharing in the aggregation virtualization.

The invention belongs to the field of video processing and particularly relates to a video stream cache distribution method and device. The invention aims to solve problems of the waste of a memory space, easy data loss and increased system overhead caused by a fixed length of a cache queue in the prior art. The video stream cache distribution method provided by the invention comprises a step of distributing a memory block containing video data as a cache block and storing the memory block into the cache block, a step of storing the cache block into a data center and storing an address of thecache block into a first address queue, and a step of obtaining the cache block, distributing data in the cache block to a corresponding client, and releasing the cache block. According to the video stream cache distribution method, the memory space can be fully utilized, and the smoothness and integrity of a video are ensured. The invention also provides the video stream cache distribution device, a storage device and a processing device with the above effects.