35results about How to "Guaranteed extension" patented technology

The embodiments of the present invention provide a method, an apparatus and a system for data transmission, the method comprises: reusing, when the hop number of a branch in a radio communication network is greater than a predetermined hop number, resources of the predetermined hop number on links with different hop numbers in the radio communication network. The method, apparatus and system provided by the embodiments of the present invention may guarantee the real time traffic transmission of a forwarding network, improve the spectrum efficiency of the forwarding network and assure the dynamic expansion of the forwarding network.

The embodiments of the present invention provide a method, an apparatus and a system for data transmission, the method comprises: reusing, when the hop number of a branch in a radio communication network is greater than a predetermined hop number, resources of the predetermined hop number on links with different hop numbers in the radio communication network. The method, apparatus and system provided by the embodiments of the present invention may guarantee the real time traffic transmission of a forwarding network, improve the spectrum efficiency of the forwarding network and assure the dynamic expansion of the forwarding network.

The invention belongs to the field of intrusion detection algorithms in SDN, and discloses a DDoS attack detection system and method in an SDN environment. In order to timely and effectively identifyabnormal traffic in a network and reduce consumption of network resources by DDoS attacks, an MD-SAL framework is combined, and a DDoS attack defense system is designed. The system comprises an exception detection module, an anti-misjudgment module, a flow processing module, an exception storage module and an information viewing module. The system can identify traffic abnormality in a network, timely gives an alarm to notify the system to make corresponding defense measures, and finally checks attack information according to RPC preset values in advance such as a source IP and a destination IP, and realizes accurate classification of suspicious traffic based on a TDMC algorithm.

The invention discloses a method for measuring the fracture toughness JIC of each micro-region in the heat-affected zone of a welded joint, which is suitable for measuring the fracture toughness of various welded joints. The invention can effectively control the direction of crack propagation by welding the coarse-grained or fine-grained area of ​​the heat-affected zone on the three-point bending sample to open a V-shaped groove, so as to ensure that the crack expands in the coarse-grained or fine-grained area of ​​the heat-affected zone, thereby measuring The fracture toughness of each micro-zone in the heat-affected zone of the welded joint. The method of the invention is simple, low in cost, and the measurement result is true and reliable, and has great significance for evaluating the mechanical properties of each micro-region of the welded joint, determining the weak link of the welded joint and studying the fracture toughness of the heat-affected zone of the welded joint.

The invention discloses a block storage method of a lightweight block chain of the Internet of Vehicles, which comprises the following steps: S1: constructing a block chain storage architecture model to generate blocks; S2: using a block coding algorithm to store the blocks Encoded into several encoding blocks, and randomly sent to each node in the network, S3: several encoding blocks are stored in the RSU, S4: merge the corresponding codes into blocks, S5: verify the integrity of the merged blocks and correctness. The storage architecture model of the block storage method includes: blockchain layer, coding layer, core layer, aggregation layer, verification layer and edge layer. The present invention proposes a novel block coding scheme based on LT fountain coding. This solution enables nodes to function as complete nodes even when only a part of the blockchain is stored, so that the security of the entire blockchain network is not affected.

The invention provides a method and a device for growing a cadmium zinc telluride single crystal. The growth method comprises the following preparation steps: putting a cadmium zinc telluride melt into a crucible; and enabling the temperature of the central area of the growth interface to be at a relatively low level through a cold electrode rod, and avoiding the condition that the relative low temperature of the cold electrode rod causes new crystals in the melt through a hot electrode tube. Through relative displacement between the hot electrode tube and the cold electrode rod, and the crucible, the temperature of a growth interface and the melt side is artificially intervened, so that the central point is slightly lower, growth can be ensured to extend from the center to the periphery, and meanwhile, the area except the central point is kept higher than the central point by using the hot electrode tube to avoid nucleation and polycrystal generation at other places. The growth interface is intervened manually, growth can be guaranteed to extend from the center to the periphery, meanwhile, the area except the center point is kept higher than the center point through the hot electrode tube, and nucleation in other places is avoided to generate polycrystals.

The invention discloses a nerve cell material taking operation table support device, which comprises a heat preservation box. Supporting columns are arranged on the outer walls of the four corners ofthe bottom of the heat preservation box. A base is welded to the outer walls of the bottoms of the supporting columns. A water outlet hole is formed in the inner wall of the bottom of the heat preservation box, and a water outlet pipe is arranged in the water outlet hole. The water outlet pipe is provided with an electromagnetic valve. On the left side of the water outlet hole, a limiting groove is formed in the inner wall of the bottom of the heat preservation box. A telescopic pipe is arranged on the limiting groove. The outer wall of the top end of the telescopic pipe is connected with theouter wall of the bottom of a fixed table. According to the invention, a hydraulic telescopic rod and a telescopic pipe are arranged. The telescopic pipe is not only good in extension flexibility, butalso excellent in waterproof performance. Therefore, the working performance of the telescopic rod cannot be influenced. Meanwhile, the effect that the hydraulic telescopic rod is passively matched with the telescopic rod for extending and unfolding when the telescopic rod is in telescopic work is also guaranteed. The distance between an operation box and the bottom of the heat preservation box can be automatically adjusted by the hydraulic telescopic rod, so that an optimal operation height is achieved.

The invention relates to an HLR worksheet processing device based on CORBA interface quick input. The device includes a BOSS HLR interface module, an NEMU server module, an HLR module, wherein, the NEMU sever module comprises a CORBA interface module, an FSM processing module and a DX information transmission module; and the HLR module comprises an EMT module and an HLR information bus module. Byusing the device, a service supporting ability oriented to costumers is enhanced, defaulting of consumers is controlled effectively, complaint is reduced, and satisfaction of consumers is improved. The devise also solves a problem that an interactive interface between a BOSS based on an MML way and an HLR has a business peak bottleneck problem with a long time-lapse in the situations of a batch processing as well as .stopping or recovering the utilization of the machine at the beginning or end of a mouth.

The invention discloses an expandable base station array, an optical tracking system and a tracking method thereof. The expansion of a base station is achieved, more accurate and fast signal sorting is achieved by preset offset layout, and thus more precise and efficient tracking system and tracking method are obtained. The technical solution of the present invention is that the expandable base station array is formed by m*n base stations in m rows and n columns, the scanning ranges of adjacent base stations overlap, and the position of each base station is an original position when the base stations in the same row and in the same column are in linear arrangement. A base station whose row number and column number are odd numbers or even numbers at the same time is arranged at an originalposition, and a base station whose row number and column number are an odd number and an even number is arranged at an offset position set at the lower right part of an original position. According toa set offset, the scanning ranges of the adjacent base stations overlap. For the base station array, the present invention provides the corresponding optical tracking system and tracking method.

The invention relates to an experimental method for testing fracture mechanical properties in the field of material, and discloses a type I crack specimen dynamic symmetrical tensile device and an experimental method thereof. The specimen dynamic symmetrical tensile device includes a power supply, a capacitor charger, loading guns and a waveguide-rod rod system. The capacitor charger adopts a power supply part of a conventional electromagnetic riveting device; two loading guns with the same parameters are connected in parallel and then access the capacitor charger. The invention also relates to the experimental method based on the specimen dynamic symmetrical tensile device. Because the parameters of the two loading guns are the same and access the capacitor charger in parallel, the discharge current can be synchronously and evenly distributed into the two loading guns, same compression stress waves are produced in the two loading guns, are reflected into tensile waves in two convex platforms respectively and then enter tensile rods, and the specimen is loaded; therefore, the specimen can be symmetrically loaded, and a specimen crack is guaranteed to be extended into a type I spallation crack.

The invention provides a method of loose blasting by high-pressure water jet helical cutting. The method includes the steps: 1, drilling; 2, performing high-pressure water jet helical cutting; 3, charging; 4, sealing holes; 5, blasting. The method has the advantages that a crack zone formed by the method compared to traditional loose blasting is wider, coal seam permeability is greatly improved, control holes are fewer, and the cost is reduced; through the application of the water jet helical cutting manner, the defects of traditional mechanical cutting, such as tool jamming and drill locking, are overcome; the size of jet seams is determined by jet parameters, so that the problem that the size of the seams affects blasting effect is solved; helical cutting can be performed in axial and radial directions alternatively, through the application of the helical cutting manner, the range of crack zone is greatly enlarged and compensating space is provided for blasting, cut density can be adjusted, blasting lumpiness is controlled, and energy availability is improved; accordingly, economic benefit is increased on the premise of effectively preventing coal and gas outburst.

The invention relates to a curved path cutting method of a brittle base plate by laser cutting, which comprises the following steps of: manufacturing an initial crack on the base plate as a cutting path, and setting sampling points; respectively obtaining the cracking angles theta at all sampling points; obtaining the current sampling point, and calculating out the stress intensity factors KI andKII according to the cracking angle theta at the current sampling point and the fracture toughness KIC of the base plate; solving temperature field distribution according to the stress intensity factors KI and KII of the current sampling point; regulating the parameters of a hot source and a cold source according to the obtained temperature field distribution so that the temperature field generated at the current sampling point is consistent with the calculated temperature field; and judging whether the current sampling point is the last sampling point or not, if not, then acquiring the next sampling point as the current sampling point, and turning to the step 2. The invention has the advantages of capability of ensuring a crack to propagate along the preset cutting path and high cutting accuracy.

The invention relates to a damage control method for ultraprecision turning of a crystal material. The damage control method for ultraprecision turning of the crystal material comprises the steps that a multi-layer amorphous system is designed according to the to-be-machined material and cutting parameters, the number, the depth and the thickness of amorphous layers are determined, the ion irradiation process is simulated through the Monte Carlo numerical method, and an ion source, implantation energy and the dosage combination are worked out; ion irradiation is conducted through an ion implanter or a high-energy accelerator according to the worked-out implantation parameters, and a multi-layer amorphous structure in the material is prepared; the allowable maximum feed rate for turning is determined according to the arc radius of a tool, the cutting depth, geometrical parameters of the amorphous layers, and the brittleness-plasticity conversion thickness of the workpiece material; and planar machining is conducted on a modified crystal according to the turning parameters.

The invention discloses a cantilever type loop-handled truss hoisting system for a high-altitude attached tower in a mountainous area. The cantilever type loop-handled truss hoisting system for the high-altitude attached tower in the mountainous area comprises cantilever support seats, connecting seats, cushion blocks, a support plate, a guide rail, a supporting and walking mechanism, a truss hoisting bracket I, a walking and lifting mechanism I, a truss hoisting cross beam, pull ropes, a stand column I, a fixed clamping block I, a stand column II, a fixed clamping block II, a truss hoisting bracket II and a walking and lifting mechanism I. The cantilever type loop-handled truss hoisting system for the high-altitude attached tower in the mountainous area provided by the invention is reasonable and simple in structure, low in production cost and convenient to install; through arranging the walking and lifting mechanism I and the walking and lifting mechanism I, the requirements on lifting and hoisting truss components and hoisting during assembling are net, and the working efficiency is further improved. Through the arranged supporting and walking mechanism, the hoisting range can be improved, and especially the cantilever support seats, the connecting seats, the cushion blocks and the supports are hoisted so as to be conveniently installed on tower columns, so that the system can be expanded along with the working procedure, the hoisting assembling of the system can be carried out without the need for adopting a large-sized hoisting device, and a large number of cost and time is saved.

The invention discloses a nerve cell material taking operation table support device, which comprises a heat preservation box. Supporting columns are arranged on the outer walls of the four corners ofthe bottom of the heat preservation box. A base is welded to the outer walls of the bottoms of the supporting columns. A water outlet hole is formed in the inner wall of the bottom of the heat preservation box, and a water outlet pipe is arranged in the water outlet hole. The water outlet pipe is provided with an electromagnetic valve. On the left side of the water outlet hole, a limiting groove is formed in the inner wall of the bottom of the heat preservation box. A telescopic pipe is arranged on the limiting groove. The outer wall of the top end of the telescopic pipe is connected with theouter wall of the bottom of a fixed table. According to the invention, a hydraulic telescopic rod and a telescopic pipe are arranged. The telescopic pipe is not only good in extension flexibility, butalso excellent in waterproof performance. Therefore, the working performance of the telescopic rod cannot be influenced. Meanwhile, the effect that the hydraulic telescopic rod is passively matched with the telescopic rod for extending and unfolding when the telescopic rod is in telescopic work is also guaranteed. The distance between an operation box and the bottom of the heat preservation box can be automatically adjusted by the hydraulic telescopic rod, so that an optimal operation height is achieved.

The invention belongs to the field of intrusion detection algorithms in SDN, and discloses a DDoS attack detection system and method in an SDN environment. In order to identify abnormal traffic in the network in a timely and effective manner and reduce the consumption of network resources by DDoS attacks, a DDoS attack defense system is designed in combination with the MD‑SAL framework. The system includes an anomaly detection module, an anti-misjudgment module, a flow processing module, an anomaly storage module and an information viewing module. The system can identify the abnormal traffic in the network, timely alarm and notify the system to formulate corresponding defense measures, and finally check the attack information according to the source IP, destination IP and other RPC preset values ​​in advance, and realize the accurate classification of suspicious traffic based on the TDMC algorithm.