55results about How to "Guaranteed survivability" patented technology

The invention discloses a mimic SDN controller construction method. The method comprises a control plane, a dispatching plane and a data plane. The control plane is used for realizing tasks of network control and management and providing multiple heterogeneous redundant controller executing parts. The data plane is used for finishing a data forwarding function in a network and comprises hardware facilities such as a switch and a router. The control plane communicates with the data plane through the dispatching plane. The dispatching plane comprises a forwarder, a sensor, a decider and a dispatcher. The mimic SDN controller construction method comprises following specific steps of step 1, collecting network state information and forwarding the information to the controller executives; step 2, carrying out sensing detection on network operation states in real time; and step 3, dispatching the controllers of the control plane dynamically, and carrying out voting output on the sent information by utilizing a majority judgment mechanism. The device has a management mechanism capable of sensing and dynamically dispatching the controllers; abnormal network operation resulting from a failure of a single controller is avoided; exterior attacks are difficult to capture the executing parts responsible for network management; and moreover, the security of the SDN is further improved through adoption of the majority judgment decision-making mechanism.

The invention discloses a multi-unmanned aerial vehicle task decision method based on MADDPG, which introduces an MADDPG algorithm into multi-unmanned aerial vehicle task allocation, and comprises thesteps of firstly establishing a two-dimensional combat environment model required by deep reinforcement learning according to the actual combat environment of multiple unmanned aerial vehicles, secondly establishing mathematical description of various threats such as air defense missiles in the combat environment of the multiple unmanned aerial vehicles, and finally, taking the tracks and distances of the multiple unmanned aerial vehicles and the defense threats of the battlefield as constraint conditions, and performing learning training to obtain a multi-unmanned aerial vehicle task decision model. According to the method, an experience pool and a double-network structure are adopted, so that the operation and convergence speed of the whole network is greatly improved, a result can be obtained more quickly in the high-speed flight process of the unmanned aerial vehicles, the purpose of autonomous decision making of the multiple unmanned aerial vehicles can be achieved, and the highefficiency of task decision making of the unmanned aerial vehicles can also be guaranteed in an unknown combat environment.

The invention relates to a screening method for petroleum degrading bacteria. An enrichment medium, a screening medium and a domestication medium, which are used in the method, are media employing petroleum as a unique carbon source, and specifically, petroleum polysorbate-80 solubilizing fluid is specifically added into the media. The method has the beneficial effects that a nonionic surfactant polysorbate-80 is used as a solubilizing agent, so that the dissolution effects of petroleum in water can be improved, and the problem of difficulty in the dissolution of petroleum in the media is solved; petroleum is actually the unique carbon source, and the petroleum polysorbate-80 solubilizing fluid is used as the carbon source of the media in processes of primary screening, domestication, purification and the like of the petroleum degrading bacteria; the screening of the petroleum degrading bacteria comprises the processes of primary screening, domestication, purification and the like, a strain is gradually domesticated to be adapted to growth and reproduction under the condition of employing petroleum as the unique carbon source in the domestication medium of which the petroleum concentration gradient gradually rises, and tolerance to petroleum and the degradation efficiency are improved.

The invention provides a deep well hydrocarbon reservoir temperature and pressure intelligent on-line monitoring device. A test plane and a transition plane are processed in the eccentric oil pipe, an optical fiber Bragg grating strain sensor is formed on the test plane through high-temperature bonding, one end of the optical fiber Bragg grating strain sensor is fixedly arranged on the test plane, and the other end of the optical fiber Bragg grating strain sensor passes through an optical fiber channel arranged between the test plane and the transition plane to reach the transition plane. One end, near the transition plane, of the optical fiber channel is connected with a stainless steel capillary pipe, the optical fiber penetrates into the stainless steel capillary pipe after being led out from the optical fiber channel, the stainless steel capillary pipe approaches to the transition plane and extends to a position near an optical fiber modem interface on the well, and the optical fiber is protected from being influenced by external severe environment in the whole process. The on-line monitoring device related by the invention realizes the deep well oil pipe structure integration, and has the advantages that the size is small, no additional auxiliary structure is adopted, the anti-interference capability is high, signals are stable and reliable, the response speed is high, and the like, and the on-line obtaining precision and the reliability of key information such as deep well hydrocarbon reservoir temperature and pressure can be obviously improved.

The invention provides an environment-friendly water surface hydroelectric power plant which comprises iron tower supports, a water wheel supported to the tops of the iron tower supports through a water wheel centre shaft, a reduction box and an electric generator. The water wheel is evenly provided with a plurality of groove-type blades, the two ends of the water wheel centre shaft are supported to the tops of the corresponding iron tower supports through lifting mechanisms and move up and down to adjust the height of the water wheel, one end of the water wheel center shaft is connected with the input end of the reduction box through a crank type transmission device. According to the environment-friendly water surface hydroelectric power plant, the groove-type blades are adopted and are in holding type contact with water flow, stress is concentrated, the fluid potential energy can be received to the maximum degree, the rotation twisting force of the water wheel and the water wheel center shaft is increased, and the aims of energy conservation and efficiency improvement are achieved; in addition, the water wheel center shaft and the water wheel of the environment-friendly water surface hydroelectric power plant move up and down through the lifting mechanisms, the end of the water wheel center shaft outputs power through the crank type transmission device, normal transmission of power at different heights of the water wheel center shaft is guaranteed, impact damage of floating objects in a river on the blades during large waves and fast flow is avoided, and the electric generation capacity and the viability of the power plant under the extreme hydrologic condition are guaranteed.

The invention discloses a special wild peach fertilizer rich in microorganisms and a preparation method therefor. The special wild peach fertilizer is prepared from the following raw materials in parts by weight: water hyacinth residues, bean flour, a compound microbial agent, rice straws, coconut shells, concentrated phosphoric acid, alcohol, potassium sulfate, a calcium magnesium phosphate fertilizer, humic acid, a binder and a proper amount of water. Tiny thalluses can be attached to a porous natural activated carbon component very well, thereby effectively guaranteeing viability of the thalluses, and improving interaction efficiency of the thalluses; particles take the straws as a main body, so that the thalluses are not damaged, and the purity of a microbial strain is kept; and the thalluses are added, so that root systems of the wild peach trees utilize surrounding nutrient substances easier, and therefore, dosage of the fertilizer is reduced.

The invention relates to a shared protection routing and spectrum allocation method and system considering joint fault probability constraints for reducing the fault risk of service requests in a spectral flexible optical network. The method comprises the following steps of firstly, initializing a spectral flexible optical network G(V, E, F); secondly, generating a group of service requests; and lastly, setting an adjustable parameter alpha and spectral maximum sharing degree, multi-objective optimization functions for shared protection routing and spectrum allocation based on the joint fault probability constraints, and a bandwidth flow conservation constraint condition for the service requests, a spectral consistency constraint condition, a spectral continuity constraint condition, a working path and shared protection path pair selection uniqueness constraint condition, a spectral gap occupation uniqueness constraint condition, a spectrum sharing constraint condition, a spectral gap maximum sharing degree constraint condition and a maximum tolerable fault probability threshold constraint condition which meet the multi-objective optimization functions, and obtaining an optimal solution of spectrum resource occupancy and joint fault probability.

The method includes steps: calculating backup LSPs of all main LSPs in network; if a LSP wins an advantage of former backup LSP, then the LSP is determined as current backup LSP; otherwise the former backup LSP is as current backup LSP. The invention provides a device for selecting backup LSP. The device includes calculation module, comparison module, and current backup LSP determination module. The feature of the invention is that network holds minimal bandwidth in use for recovering path so as to raise use ratio of network bandwidth.

The invention discloses an improved PMADDPG multi-unmanned aerial vehicle task decision-making method based on transfer learning. The method comprises the steps of firstly, performing reasonable mathematical modeling for threats such as air defense missiles and radars in an environment under the background of a multi-unmanned aerial vehicle actual combat environment, then creating a plurality of different two-dimensional combat environment models, designing constraint conditions, and learning and training the plurality of combat environments in sequence, thereby obtaining a final multi-unmanned aerial vehicle task allocation model. According to the method, the defect that in the prior art, task decision making can only be carried out in a known or static combat environment is overcome, decision making can also be carried out efficiently in an unknown combat environment, tasks of unmanned aerial vehicles are achieved, and the viability of an unmanned aerial vehicle group in the unknowncombat environment is greatly guaranteed.

Provided is a method for separating and extracting mesenchymal stem cells from the human umbilical cord. The method uses healthy neonatal umbilical cord tissue; after cleaning and disinfection, mechanically pulverising same, separating the Wharton's jelly, and after treating with erythrocyte lysate, carrying out suspension culture in a serum-free culture medium. Replacing the liquid every 3-5 days; after the plate adherence rate reaches 30-70%, carrying out trypsin digestion, and then collecting the cells by centrifugation for passage amplification, until the rate of confluence of the cells reaches 80-90% confluence, thereby obtaining high purity umbilical cord mesenchymal stem cells.

The invention discloses a block chain complex transaction verification method and device based on a game model. The method comprises the following steps: electing verification nodes for processing a to-be-verified transaction to form a committee; carrying out deduction under the chain to obtain the verification difficulty and the final state of the to-be-verified transaction, determining a verification time limit and a deposit limit according to the verification difficulty, adding excitation, and broadcasting the information to a committee; enabling the committee to detect the transaction deposit capacity and the conflict situation, and initializing the voting container if the transaction deposit capacity and the conflict situation succeed and meet the complexity lower limit requirement; enabling the verifier in the container to independently complete verification within the verification period and commit and broadcast the verification result by adopting a cryptography commitment scheme; and after all the verification nodes complete the commitment of the verification result or the verification time is equal to the verification time limit, enabling the committee to clear the commitment verification result of the verification nodes, and carrying out rewards and punishment on the verification nodes according to the clearing result. According to the method, the correctness, universality, consistency, excitation compatibility and public verifiable capability of a verification result are ensured.

The invention relates to a routing and spectrum allocation method and system based on sharing protection for guaranteeing the survivability of connection requests and improving the utilization rate of spectrum resources of an optical network with a flexible spectrum. The routing and spectrum allocation method based on sharing protection provided by the invention comprises the following steps: initializing the optical network with the flexible spectrum; generating a group of connection requests; setting an optimal target function of the connection requests for the purpose of guaranteeing the minimum occupation of spectrum resources of working paths and sharing protection paths selected by the connection requests; and running the optimal target function, obtaining an optimal solution of the target function through set constraint conditions satisfying the optimal target function, and storing and recording the obtained optimal solution of the target function. By adoption of the routing and spectrum allocation method and system based on sharing protection provided by the invention, the routing and spectrum allocation problem based on sharing protection in the optical network with the flexible spectrum is solved, the efficiency of the spectrum resources of the optical network with the flexible spectrum is improved, and the survivability of the connection requests is guaranteed.

The invention discloses a virtual network mapping method for a cross-data center. Under the condition that survival capability demands and reliability of a virtual network are ensured, first of all, partition is performed on virtual nodes in the virtual network through virtual node group partition (VNGP), based on current packets, all node pair sets among the different packets are searched for, final partition is determined, and then the virtual network after the partition is mapped to a bottom-layer data center network through a GVNM sub-algorithm. According to the invention, under the condition that the survival capability demands are ensured, the virtual nodes are mapped to the same data center, such that communication resources are saved. Besides, a reliability enhancement method in the data center is also employed, such that the reliability of the virtual network is ensured, and at the same time, the efficiency is high.

The invention provides a multi-fault protecting/recovering method and system in an electric power optical fiber communication network. The method comprises the following steps that network topological information, service demand information and link information are obtained; the survivability priority level of given service is determined according to the service level and the service protecting and protecting requirement in the service demand information; according to the network topological information and the link information, M:N source-destination node pairs are established; when the fact that multiple faults happen in the electric power optical fiber communication network is detected, whether the pre-established M:N source-destination node pairs can protect a link in which the multiple faults happen is judged; if not, service with higher survivability priority level is protected/recovered preferentially. The method and system guarantee the survivability of the electric power optical fiber communication network during major natural disasters, the continuous and reliable communication ability of the electric power optical fiber communication network is guaranteed, the fault risk resisting ability of electric power optical fiber communication network protection is enhanced, and the property safety of an electric power system is protected.

The invention belongs to the field of robots, and particularly relates to a digital security investigation robot. A vehicle body can guarantee the viability of the digital security investigation robotin a special environment. A steering device, a shock absorption device and a transmission device in a base can improve the traveling performance of the digital security investigation robot. The capacity of adapting to the road surface conditions is high. The digital security investigation robot can assist rescue workers in investigating the site on a fire scene and a field accident site and confirming the site environment conditions. Besides, the digital security investigation robot can communicate with people needing help, risks are avoided, and a reasonable rescue scheme is made. The digital security investigation robot can also replace people and monitoring aids to monitor a dangerous place, like an unmanned production area of a petrochemical plant, in a full-time and dead-angle-free mode, and is wide in application range. In addition, the digital security investigation robot is simple in structure, can improve work reliability, and is convenient to repair and examine. All parts ofthe digital security investigation robot are common articles and are low in price, so that the production and repair cost is low, and the economic benefits are high.

The invention discloses pyracantha fortuneana fruit wine and a making method thereof. The pyracantha fortuneana fruit wine is prepared from pyracantha fortuneana fruits, fermented glutinous rice and distiller's yeast. The making method of the pyracantha fortuneana fruit wine comprises the following steps: cleaning and pulping the pyracantha fortuneana fruits, and adding the fermented glutinous rice and the distiller's yeast for solid-state fermentation, distillation, aging and filtering, thus making the pyracantha fortuneana fruit wine. The wine prepared from the Chinese herbal medicinal distiller's yeast and the pyracantha fortuneana fruits fermented through the fermented glutinous rice have the advantages that the materials are natural, healthy and safe, the making method is simple, and various effects are achieved; the prepared pyracantha fortuneana fruit wine is original juice wine, has pure color and fragrance and original taste and flavor, is enriched with vitamin A, B, C and D and various trace elements; the pyracantha fortuneana fruit wine can treat diabetes, hyperlipidemia, arteriosclerosis and constipation, has an effect of liver detoxification, and has a reputation of an optimal hematocathartic in the natural world. The wine is formed by adding the pyracantha fortuneana fruit pulp into the Chinese herbal medicinal distiller's yeast for fermentation and distillation through a conventional process, so that the survivability of the vitamins and the trace elements is guaranteed, and the wine tastes natural and pure.

The invention relates to a wavelength conversion range limited 2-hop-segment-based dynamic optical multicast P-ring segment protection method, belonging to the technical field of network protection. The method comprises the steps of: firstly, searching all loops for a network through a backtracking depth-first search algorithm; then, carrying out path segmentation on a multicast tree, and searching link separated path segments, wherein the survivability of all nodes and links in multicast can be guaranteed through protection on the path segments; finally, obtaining a P ring with the highest efficiency through the wavelength resource utilization of the loops, and establishing the multicast tree and looking for P ring protection to meet a multicast request under the condition that the wavelength conversion range is limited. According to the wavelength conversion range limited 2-hop-segment-based dynamic optical multicast P-ring segment protection method disclosed by the invention, the survivability of dynamic multicast service in an optical network can be guaranteed effectively, and wavelength resources, used by the multicast service and P rings, in the network are reduced.

The invention discloses a software-defined optical network controller deployment method based on multipath survivability protection, belongs to the technical field of networks, and is applied to deployment of a two-layer SDN (Software Defined Network) controller. On the premise that the survivability requirement of a user for a control plane is guaranteed, the situation of multi-controller multi-path collaborative management and control of exchange nodes is provided, the number of controllers is further reduced, and the control cost is further reduced. According to the method, a controller deployment scheme in which a switch and a controller have a unique link is firstly solved, the scheme contains redundant controllers, and the number of the controllers needs to be further reduced. According to the method, a posterior idea is adopted, that is, whether the fault probability of each switch is lower than the fault probability required by a user is verified according to a deployment result. The number of the controllers is gradually reduced, and the survival probability of the switch is ensured all the time until the deployment number of the controllers reaches the minimum. And finally, selecting the controller with the lowest communication time delay as a management and control center to complete the deployment work of the whole control plane.

The invention discloses a synbiotic compound preparation conducive to alleviation of hypertension symptoms without solid lesions. A formula of the synbiotic compound preparation comprises 8%-12% of bifidobacterium infantis, 8%-12% of bifidobacterium longum, 8%-12% of bifidobacterium breve, 3%-6% of lactobacillus acidophilus, 3%-6% of lactobacillus casei, 3%-6% of lactobacillus rhamnosus, 3%-6% oflactobacillus plantarum, 3%-6% of lactobacillus paracasei, 3%-6% of lactobacillus bulgaricus, 12%-18% of streptococcus thermophilus, 0.2%-0.8% of sodium acetate, 0.4-0.8% of sodium butyrate, 1.2%-1.5%of fructo-oligosaccharide, 0.5%-0.9% of lactulose, 0.1%-0.5% of barley malt powder, 1.4%-1.8% of skim sheep milk powder, 1.3%-1.8% of active hexose correlated compound, 0.8%-1.4% of inulin and 0.2%-0.5% of plantago ovate shell. The invention further discloses a preparation method of the synbiotic compound preparation conducive to alleviation of hypertension symptoms without solid lesions. The preparation method includes steps of quantitative weighing, probiotic culture, probiotic fermentation, skim sheep milk resuspension and mixing for capsule preparation.

The invention relates to the technical field of honeysuckle planting and cultivation, and discloses a high-quality honeysuckle cultivation and large-scale planting method which comprises the following steps: S1, seedling selection; s2, seedling treatment and cultivation; s3, seedling raising and cuttage grafting; s4, seedling growing and planting; s5, seedling culture management; s6, harvesting and processing. According to the method, firstly, seedlings which grow fully and are not damaged are selected during cultivation, so that the survivability of the seedlings can be guaranteed, meanwhile, the seedlings need to be soaked and cleaned and nutrients need to be improved during seedling cultivation, the seedlings can be sterilized and disinfected, growth and development of the seedlings can be promoted, and the survival rate of the seedlings is increased. In addition, in the seedling cultivation process, workers need to record the growth condition of the seedlings in time so that the seedlings can be rapidly treated, during seedling planting and management, soil components need to be treated, the soil excavation distance and depth need to be controlled, and the soil excavation efficiency is improved. Therefore, the survival rate of the seedlings is increased after the seedlings are transplanted.