299results about How to "Small area of ​​influence" patented technology

This invention provides a protecting method, device and system of DDOS attack based on SDN. The method comprises the following steps: a traffic statistics instruction is sent to a first message transmitting device by a controller; the traffic statistics instruction indicates the first message transmitting device to perform traffic statistics and carry a destination IP (Internet Protocol) address; the controller collects statistics data reported by the first message transmitting device; the statistics data includes traffic statistics information which flows to the destination IP address; the controller acquires a global traffic statistic which flows to the destination IP address according to the statistics data; the controller judges whether the global traffic statistic exceeds a predefined threshold or not, and sends a DDos protection strategy to a second message transmitting device based on a judging result that the global traffic statistic exceeds the predefined threshold; correspondingly, the second message transmitting device receives the DDos protection strategy sent by the controller; and according to the DDos protection strategy, the traffic which flows to the destination IP address is protected. The method reduces the influence range of the DDos attack to the network, and improves the security of the network.

The invention provides an intelligent client-based on-demand downloading realization method, which aims to solve the problem on the updating of an intelligent client program in a low-speed network and update the program in a configurable mode in a way of taking a function as a unit. In the method, configurable and expandable downloading definition configuration is provided, and an application program can be flexibly configured according to actual conditions; the downloading and updating process of a client is completely automatic in no need of manual intervention; abnormity processing is enhanced in a deployment link, and specifically, the program is automatically updated when the downloading is started when an abnormity occurs; and downloaded items can be downloaded when in use, which reduces network traffic in a disguised form and reduces the range of the influences of a patch on the client.

The present invention provides a dispatching system-based DDoS (distributed denial of service) defense method and a DDoS (distributed denial of service) defense system. The method includes the following steps that: when a DDoS attack to a first IP address is monitored, a currently available second IP address is obtained; and when a dispatching request sent by a user terminal which accesses the first IP address is received, the second IP address is sent to the user terminal, so that the user terminal can access a service target through the second IP address. With the dispatching system-based DDoS (distributed denial of service) defense method provided by the embodiments of the present invention adopted, influences of the DDoS attack can be reduced to a controllable range, defense cost can be reduced, influence on the service target accessed by a user which is caused by wrong attack killing can be greatly reduced, and the experience of a user subjected to attacks can be improved.

The invention discloses a method for code assigning, reading and data correlation of each pack of cigarettes. The method comprises the steps of producing small pack packages of cigarettes and carton packages of cigarettes; assigning codes when printing cigarette packages; conducting carton package with a carton packing machine; scanning unique bar codes on small pack packages and carton packages with a bar code reading device; and conducting exception handling during bar code reading. The method can be used for code assigning for each pack of cigarettes, and codes accurately correspond to bar codes. The method is characterized in that modification of a production line is low in work load, small in influence range and convenient to implement during reading of bar codes; a modification link of the production line is performed after quality inspection and rejection and facilitates accurate corresponding between carton codes and pack codes; the modification link of the production line is performed before shipping of cigarette cartons, the speed requirements for reading and detection of bar codes are greatly reduced, and then the cost of devices to be added is reduced.

The related business implementation method in communication field comprises: the business side sends business requirement to node; after determining the business service node, the access node transmits the requirement, and the service node executes the business. This invention reduces HLR or HSS integration level, and decreases the fault incidence of a single node.

The invention provides a gas compressor plane cascade experimental system with a suction baffle structure. The gas compressor plane cascade experimental system comprises a suction device and a plane cascade experimental device. The plane cascade experimental device comprises a left end plate, a right end plate, an upper baffle, a plurality of experimental blades and a lower baffle, wherein the upper baffle is arranged between the left end plate and the right end plate, and the multiple experimental blades are distributed at intervals. The upper baffle and the lower baffle are connected between the left end plate and the right end plate through fixing shafts. The upper baffle is provided with suction holes. Left end plate suction holes are formed in the left end plate, and right end plate suction holes are formed in the right end plate. The suction holes are connected with a vacuum pump through a pipeline. A three-hole probe 1 is arranged between the left end plate and the right end plate. In the experimental process, the upper baffle and the lower baffle are adjusted so that a cascade can be good in periodicity, the boundary layer of incoming flow is sucked through the left end plate suction holes and the right end plate suction holes, the influence area of the boundary layer is reduced, and uniform incoming flow is achieved. The gas compressor plane cascade experimental system with the suction baffle structure is an effective path for exploring improvement of the performance of a gas compressor, the influence of the boundary layer of the incoming flow is reduced, and meanwhile, the periodicity of the plane cascade is improved.

The invention discloses a distributed type station train number tracing logical method. By means of the method, the functions such as train number creation, tracing, deletion and recovery of a CTC/TDCS can be effectively achieved. In the field use process, a tracing system is released downwards to stations in a distributed manner, and the influence scope generated when the stations are upgraded and reconstructed is small; single-station tracing data are configured concisely, arithmetic logic is clear, and fault tolerance can be achieved well and a train can be resumed when an abnormal station yard is shown; train number tracing among the multiple stations can be continued automatically and seamlessly, artificial data configuration is not needed, and the method can also be adapted to special station yard connection; and the train is traced in the interstation operation direction among the stations, and abnormal conditions such as train number backspacing and train number reverse tracing cannot occur.

The invention relates to a new rock II-type fracture toughness test method. According to the invention, on the basis of an original shear box test, by means of adjustments of the stress state of a loaded mould and arrangement of a sample to eliminate rotation tendency of the sample, generation of an excessive tensile stress on a crack tip is inhibited, thereby achieving rock II-type fracture toughness test. A test model includes a square rock sample and two steel loading moulds. Straight cracks are pre-formed on the middle parts of the two sides of the square rock sample, wherein the lengths and the widths of the two straight cracks are equal to each other. The two straight cracks are arranged symmetrically. The loading moulds can achieve 45-degree loading of the sample with a loading end surface being flat and smooth. The widths of two contact surfaces between the loading moulds and the square rock sample are both half of the side length of the sample. An upper end and a lower end of the whole system are subjected to a uniform load. The method enables processing of the rock sample and the loading moulds to be more convenient, is simplified in test process, ensures accuracy of test data, is suitable for the II-type fracture toughness test of various rocks, and provides basis for researching the II-type fracture of rocks and a problem of composite fracture mainly comprising II-type fracture.

The invention discloses an automated mask management system and method. The system comprises a production management module, a mask management module, a process execution module, a mask processing module and a mask storage module, wherein the production management module can be in data interaction with the mask management module, the process execution module, the mask processing module and the mask storage module respectively through an EAP (Equipment Automatic Program) and a server. According to the system and the method, disclosed by the invention, a mask can be accurately applied to a corresponding photoetching machine, a corresponding photoetching process and a corresponding photoetching product, so that the error ratio caused by human factors is reduced, the range of influence caused after problems occur is reduced, the use conditions of the mask can be effectively monitored, and the mask trace tracking is facilitated; and thus, the subsequent data analysis is facilitated, the feedback speed is accelerated, and then, the management is timesaving and laborsaving, so that the process production cost is reduced, and the problem of yield caused by human errors is solved.

The invention relates to a sectional type tunnel smoke exhaust system by water curtain separation, comprising a smoke exhaust duct, a smoke exhaust vent and an air valve. The smoke exhaust duct is positioned on the top or the side wall of a tunnel; the smoke exhaust vent is communicated with the smoke exhaust duct; the air valve is installed on the smoke exhaust vent; and the top or the side wall of the tunnel is provided with devices used for forming fire control water curtains. The invention also provides a smoke exhaust method which uses the sectional type tunnel smoke exhaust system. The smoke exhaust method comprises the following steps of: starting the devices which are used for forming the fire control water curtains and positioned on both sides of a fire source to form the water curtains and separating smoke gas generated by the fire source between the two water curtains; and starting the smoke exhaust vent which is positioned near the fire source to exhaust smoke. The invention has the advantages of optimizing the smoke exhaust effect of a highway tunnel, improving the smoke exhaust efficiency under the condition of the same smoke exhaust configuration, reducing the range of smoke gas influence, effectively controlling the diffusion of smoke gas within 200 meters, greatly reducing the heat radiation near the fire source and supplying better safety space for people escape and fire control.

The invention discloses a variable section cement-soil gravity type retaining wall and a construction method thereof. The retaining wall comprises a main wall body which consists of main cement mixed pile bodies, and an attached wall body which is positioned below the bottom face of a foundation pit and on one side or two sides of the main wall body, is connected with the main wall body and consists of attached cement mixed pile bodies, wherein the main wall body and the attached wall body form the variable section retaining wall. The construction method comprises the following steps of: forming the main wall body by using a cement mixed pile machine, forming the attached wall body, and excavating empty pile parts, so that the variable section cement-soil gravity type retaining wall is formed by the main wall body which consists of the main cement mixed pile bodies and is positioned above the bottom of the foundation pit, and the main wall body consisting of the main cement mixed pile bodies and the attached wall body consisting of the attached cement mixed pile bodies, which are positioned below the bottom of the foundation pit. By using the retaining wall formed by the construction method, when the soil layer at the bottom of the foundation pit is disturbed by cushion cap excavation and substrate structure construction, the foundation pit deforms a little, and the formed gravity type retaining wall has small width and floor area and high inclination resistance, shear resistance and bending resistance.

The invention relates to a network negative information impact minimization method based on a topic model. The network negative information impact minimization method comprises the following steps: 1) adopting a directed graph to express the propagation of information in a social network, and independently calculating the probability distribution of the negative information and the probability distribution of historical information on each edge through the topic model; 2) independently calculating a distance, i.e., KL (Kullback-Leibler) divergence d(w,i), between the probability distribution of the negative information and the probability distribution of historical information on each edge, wherein d expresses a calculation result of the KL divergence, w expresses the topic distribution of the historical information, and i expresses the topic distribution of the negative information; 3) calculating tb(w)=b(w)/d(w,i) and to(w)=o(w)/d(w,i), wherein b(w) and o(w) are independently the calculation results of a centrality algorithm and an out-degree in-degree algorithm and are sorted from big to small, and the first k nodes are removed to minimize the propagation range of the negative information. The method disclosed by the invention can effectively control the social network of which the malicious information is burst, and greatly reduces an impact range of the negative information.

The present application aims to provide a database synchronization method and device. The method comprises: acquiring a to-be-synchronized data operation record in a primary database; acquiring a read authority of an upper-layer object of an operational object corresponding to the data operation record, and acquiring a control authority that corresponds to the data operation record and relates to the operational object; and performing the data operation record on the operational object in a backup database corresponding to the primary database. Compared with the prior art, according to the database synchronization method and device provided by the present application, each data operation record acquires, according to actual needs, an operation authority corresponding to a corresponding operation hierarchy; and an influence scope of a DCL statement or a DDL statement on data synchronization is reduced, so that a DCL, a DDL and a DML can be concurrently performed without affecting consistence of a transaction, thereby accelerating primary-backup synchronization efficiency, and implementing management and operation on the database more effectively.

The invention provides a message processing method and device based on a micro-service architecture. The method can comprise the following steps: after acquiring a to-be-processed message by a Micro-BRAS (Broadband Remote Access Server) container, determining a service type corresponding to the message, and determining a service processing container corresponding to the service type; and sending the message to the service processing container by the Micro-BRAS container, and performing processing corresponding to the service type on the message by the service processing container. According tothe technical scheme of the invention, a BRAS is divided into the Mirco-BRAS container and the service processing container by using a container virtualization technology, and the container is expanded or shrank. When a large number of user equipment is accessed, the container can be expanded to meet the service needs, and when the number of the accessed user equipment is reduced, the container can be shrank, thereby saving storage and computing resources, and improving the resource utilization.

The invention discloses an urban subway hard rock stratum connection channel high-pressure gas expansion cracking excavation method, a connection channel is excavated by adopting an upper and lower step method, and the construction sequence of the step method is as follows: upper step excavation, construction of an upper step primary support, construction of an arch mortar anchor rod, excavation of a lower step, construction of a lower step primary support and construction of a connection channel secondary lining structure; wherein the upper step is excavated by adopting a mechanical method and an assistant high-pressure gas expansion fracturing method, and the lower step is excavated by adopting a high-pressure gas expansion fracturing method. The excavation method has the advantages of high efficiency of excavation through a blasting method, safety of excavation through a mechanical method, small influence range, basically no environmental pollution, high efficiency compared with pure mechanical excavation, good safety performance, little pollution, low noise, small vibration, easiness in control and the like.

The invention discloses an intrauterine adhesion prevention and cure device, which comprises an intrauterine-shaped ring and a film, wherein the intrauterine-shaped ring has elasticity; the shape and the size of the intrauterine-shaped ring are adaptive to the periphery of the inner wall of a uterus; the film is connected to the left inner side and the right inner side of the intrauterine-shaped ring; and the middle of the film is provided with an opening from the bottom to the lower section of the intrauterine-shaped ring. According to the intrauterine adhesion prevention and cure device, the intrauterine is prevented from adhering again, liquid convection in the intrauterine can be increased, and infection caused by unsmooth drainage is avoided. In addition, the intrauterine adhesion prevention and cure device also has the beneficial effects on saving raw materials, lowering manufacture cost and saving treatment cost for patients.

The invention discloses a method for growing high-quality silicon carbide crystals in an oxygen-containing atmosphere, which includes putting a graphite crucible equipped with silicon carbide raw materials and seed crystals into a SiC crystal growth furnace, and injecting oxygen-containing gases such as carbon dioxide or oxygen It is directly introduced into the graphite crucible through the pipeline to grow high-quality silicon carbide crystals. Compared with the conventional gas-phase transport method for growing silicon carbide crystals, the difference of the present invention is that oxygen-containing gases such as oxygen or carbon dioxide are introduced into the growth system, and the graphite suspended in the growth atmosphere is consumed by the oxygen-rich gas The fine particles can significantly reduce inclusion defects in the crystal, obtain high-quality silicon carbide crystals, and improve the yield of silicon carbide crystal growth.

The invention relates to a servo rail suitable for a railway tunnel across a skip fault and a control method thereof. The servo rail comprises a flexible isolation layer, a sticky energy consumption layer and a servo regulation layer which are sequentially arranged from bottom to top, wherein the flexible isolation layer comprises an arch-inhibiting filler and elastic baffle blocks at the two sides; the sticky energy consumption layer is a polyurethane solidifying channel bed; the flexible regulation layer comprises a rigid structure and a control unit; the rigid structure comprises a longitudinal beam connected to the polyurethane solidifying channel bed; a wide ram plate is arranged on the longitudinal beam; a steel rail is arranged on the wide ram plate; the control unit comprises a monitoring module for acquiring horizontal dislocation and differential settlement of the wide ram plate, a performing module for driving the wide ram plate to move and a control module for controlling awork state of the performing module. Compared with the prior art, the servo rail has the advantages of being able to ensure integral deformation of a rail structure within a millimeter scale during dislocation of the skip fault, guarantees safe operation of railway, makes rail damage locally, and is beneficial for quick low-cost repair.

The embodiment of the invention discloses an electric power communication virtual fault-tolerant network mapping method and device. The method comprises two stages of node mapping and link mapping; the node mapping stage comprises the step of selecting a node with the minimum load rate for mapping from nodes of a virtual network providing layer that satifies a preset condition according to a greedy node mapping algorithm based on load balance; and the link mapping stage comprises the step of selecting two disjoint physical links for each virtual link as a main link and an auxiliary link. The device is used for executing the method. The electric power communication virtual fault-tolerant network mapping method provided by the invention can meet the requirement of double-path protection of services in an electric power communication network, and improves the reliability of the network through a balanced load.