54 results about "Equilibrium solution" patented technology

The invention aims to provide a spectrum sharing method based on supply-demand balance in a cognitive radio system. The method applies the supply-demand balance theory to the spectrum sharing of cognitive radio, and supply and demand models are used for describing a primary user and a secondary user respectively. The spectrum quantity and will provided by the primary user is a supply function, and spectrum quantity required by the secondary user is a demand function; the cost paid by the secondary for obtaining spectrums is income obtained by the primary user for providing spectrums; and suchcost (or income), namely the equilibrium solution in the supply-demand theory, is determined through negotiation between the two parties. According to the determined spectrum sharing cost, the remaining battery capacity of the secondary user terminal and the trust of the primary user on different secondary users in spectrum access, the primary user plays game on the premise of maximizing benefitsand finally determines the shared spectrum number.

The invention relates to a method for treating wood in order to improve its properties of use and storage, and to thus obtained treated wood product. In the method the wood to be treated is contacted with a treatment composition comprising monoester, diester or triester or a mixture thereof formed by a water soluble C₁-C₁₀ alcohol and formic acid as an equilibrium solution. In addition, the invention relates to specific treatment solution compositions.

The invention belongs to the technical field of network security and particularly relates to a network optimal defense strategy selection method and device based on a bounded rational game theory. Themethod comprises the following steps: constructing an offensive and defensive game model in a bounded rational situation according to the bounded rationality of the actual offensive and defensive sides; a random optimal reaction dynamic differential equation of a participant selection strategy is established by setting a participant rationality degree parameter in combination with an offensive and defensive game strategy set and according to historical data; the two simultaneous offensive and defensive parties are treated as the random optimal reaction dynamic differential equation of the participant; and an optimal defense strategy is determined and output by solving and screening a stable equilibrium point. Compared with the method of only giving an equilibrium solution and not analyzing the Nash equilibrium formation process, the network optimal defense strategy selection method and device based on bounded rational game theory in the present invention analyze the dynamic evolutionprocess of the bounded rational evolution game equilibrium, and the utility and the guiding significance are stronger when being applied to network defense decision; the dynamic analysis efficiency ofstrategy selection can be improved; and the network security performance is further improved.

The invention belongs to the technical field of water resource allocation, and particularly relates to a water resource multi-dimensional equilibrium configuration system for inland arid regions. Thesystem comprises a basic system layer, a model input layer, a mechanism recognition layer and a multi-target decision analysis layer. According to the system, a water resource is used as a control object; the total water consumption balance, the total water consumption balance, the water and soil balance, the water and salt balance, the water quantity balance and the water ecological balance are used as control targets; an eco-hydrological process is used as a key point of control; optimization-simulation-assessment are used as technical means; complex and changeable eco-hydrological index threshold values with non-uniform time-space distribution are continuously brought into a water resource development and utilization process of the inland arid regions; and an equilibrium solution of water resource configuration among a social goal, an economic goal and an ecological goal is searched for.

The invention discloses a path tracking and stable controlling method for an intelligent automobile in a limiting condition. The path tracking and stable controlling method comprises longitudinal control, transverse control and stability control. The longitudinal control adopts feedforward control and feedback control, and the feedforward control obtains a feedforward longitudinal force accordingto an acceleration of the automobile; the feedback longitudinal control controls a relationship between a slip rate and a slip angle to obtain a feedback longitudinal force; then a total longitudinalforce is obtained by the feedforward longitudinal force and the feedback longitudinal force, and then a throttle percentage of the automobile and a pressure of a braking main cylinder are obtained bythe total longitudinal force, so that the limiting condition of an adhesive force of a tire is utilized fully; the transverse control adopts self-adaptive model prediction control; and the stability control applies a game control method to game the longitudinal force and trace tracking control and transverse stability control to obtain equilibrium solutions of an additional yawing moment, a frontwheel turning angle and a longitudinal force and optimize a movement velocity and the front wheel turning angle of the automobile in a curve moving process. The path tracking and stable controlling method can enhance the transverse stability of the automobile while improving the trace tracking precision.

The invention discloses a power market equilibrium solution method based on a two-layer particle swarm optimization algorithm. The power market equilibrium solution method based on the two-layer particle swarm optimization algorithm includes the steps of (1) constructing a power producer main energy quotation strategy and an ISO (international organization for standardization) market clearing model based on the rules of single-time power market bidding; (2) constructing an Nash fitness calculation function for a bidding strategy combination of power producers; (3) searching for possible strategy combinations of the power producers through an outer particle swarm optimization algorithm, solving the Nash fitness of each strategy combination according to the Nash fitness calculation functionand combined with an inner particle swarm optimization algorithm and an interior point method, and then solving and acquiring an Nash equilibrium strategy combination as a power market optimal strategy via corresponding Nash fitness for each strategy combination. The power market equilibrium solution method based on the two-layer particle swarm optimization algorithm has the advantages of avoidingsemi-smooth nonlinear equations formed for solving double-layer optimization of the power generators through the use of particle swarm optimization algorithm to search for equilibrium solutions, andsimplifying the algorithm at the cost of time under the premise of ensuring accurate results.

The invention relates to a regional distributed energy network design and optimization method based on a master-slave game, and the method comprises the following steps: S1, building an energy stationutility function at an energy station side according to a distributed energy station energy selling income function and a distributed energy station cost function; S2, establishing a user satisfaction function at a user side, and establishing a user side utility function according to the user satisfaction function; s3, establishing a master-slave game model of the regional distributed energy stations and the energy users according to the energy station utility function and the user side utility function; s4, setting an operation constraint condition of the energy internet; and S5, performinginteractive game optimization on the master-slave game model in combination with an operation constraint condition to obtain the optimal energy price of the energy station. Compared with the prior art, the method has the advantages that the cold load and the heat load in the distributed energy system are fully considered, the complete time periods among the participants are selected for gaming, the type selection investment of the function side equipment is fully considered, and the gaming equilibrium solution is more accurate.

The invention discloses an equus oocyte vitrification cryopreservation fluid, a cryopreservation method and an application. The equus oocyte vitrification cryopreservation fluid comprises a base solution (BS), an equilibrium solution (ES) and a vitrification solution (VS), wherein the VS is composed of the following components by volume percent: 10-20% of glycol (EG), 6-10% of dimethyl sulfoxide (DMSO), 6-10% of propylene glycol (PROH), 15-25% of inactivated fetal calf serum (NCS), 8-15% of carboxylate E-polylysine (COOL-PLL) and the balance of an HEPES solution. Each liter of the VS includes 0.3-0.8mol of saccharose. The invention has the beneficial effects that the vitrification cryopreservation fluid has low cytotoxicity, high permeability and obvious vitrification effect, meanwhile can obviously reduce the generation of ice crystals in freezing and re-warming processes, can protect cells from physical injury, can increase the survival rate of oocyte, is suitable for the vitrification cryopreservation of equus oocytes or embryos of horses, donkeys and the like, and is beneficial to the popularization and application of artificial insemination and embryo transplantation technology.

The invention discloses a microgrid stability control method based on bifurcation theory, which comprises the following steps: according to the microgrid circuit structure and the electrical relationship, respectively establishing the state equations of each distributed power source, a transmission line and a load; by Considering the frequency difference between DGs and between DGs and large powergrids, establishing a unified state space equation of micro-grid considering the output difference of DGs; Under the unified state space equation, determining the dominant factors affecting the stability of microgrid; Based on the bifurcation theory, when the dominant factors change, enabling the equilibrium solution of stable operation state of micro-grid popular, and then determining the boundary conditions of stable operation of micro-grid. The invention accurately describes the dynamic characteristics of the system, and makes up for the deficiency that the small disturbance analysis method can only be adopted in the current research. By detecting whether the bifurcation point occurs when the parameters of the system change, the condition of stable operation of the system is determined, and the limitation of stability control method in analyzing the stability of high-order system is solved.

The invention provides a cognition TD-LTE system uplink power control algorithm with vertical and horizontal interference considered. The algorithm is suitable for the situation that TD-LTE and FD-LTE use free television white spectrums with adjacent frequency bands at the same time and the frequency bands used by the two systems are adjacent to the frequency band of a television system. The algorithm comprises the steps that a vertical interference expression on a television receiver of a single TD-LTE user, and a vertical interference expression on the television receiver and a horizontal interference expression on FD-LTE UE of the whole TD-LTE system are presented; a utility function and a cost function based on interference proportion are established; a non-cooperation game power control optimization model is established; the existence and the uniqueness of an equilibrium solution of the non-cooperation game power control optimization model are proved according to the Nash equilibrium existence and uniqueness theorem; the non-cooperation game power control optimization model is solved. The algorithm guarantees normal working of the television system and lowers interference on FD-LTE system uplink.

The invention discloses a method for obtaining a reservoir group multi-objective scheduling risk analysis optimal equilibrium solution. The method comprises the acquisition of a multi-objective scheduling risk analysis noninferior solution, the calculation of a uniformity rate decision method of multi-objective scheduling risk analysis, and the calculation of a risk and benefit conversion relation and a threshold determination process in multi-objective scheduling. In the acquisition of the multi-objective scheduling risk analysis noninferior solution, firstly a cascade reservoir combined dispatching multi-objective minimum risk model is established, then a scheme is obtained through a selection operation in a genetic algorithm to carry out non-dominated sorting, and through the continuous renewal and elimination of crossover and variation operations in the algorithm, finally a solution curve or curve surface formed by a solution set is outputted. In the calculation process of the uniformity rate decision method of the multi-objective scheduling risk analysis, and based on a uniformity rate, a decision mode of the optimal equilibrium solution is determined. In the process of the calculation of a risk and benefit mutual conversion relation and a threshold determination process in multi-objective scheduling, based on the bifurcation theory, the threshold of a risk and benefit conversion relation between objectives is analyzed and determined.

The invention discloses a preparation method for a modified polyethylene glycol terephthalate non-woven fabric composite membrane and relates to a preparation method for parting materials and composite membrane materials in order to solve the technical problem that a modified composite membrane prepared according to an existing membrane material modification or membrane surface modification method is low in reduction rate of a water contact angle and in reduction rate of equilibrium solution absorption capacity of bovine serum albumin (BSA). The preparation method includes the steps of: 1), preparation of a casting membrane solution; 2), preparation of the modified composite membrane; 3), preparation of the modified non-woven fabric composite membrane. By the preparation method, the water contact angle of the composite membrane is lowered, the equilibrium solution absorption capacity of the BSA of the composite membrane is decreased, and membrane flux of the composite membrane is increased.

Disclosed is a method for cryopreserving an oocyte by adding an antifreeze protein to a cryopreservation liquid (equilibrium solution, vitrification solution). The disclosed cryopreservation method of an oocyte minimizes damage to the oocyte, which increases the survival rate of the oocyte after freezing and thawing of the oocyte, and improves a fertilization rate, and a blastocyst development ratio of the oocyte.

The invention discloses a single-intersection signal timing method based on sequential gaming, and the method is characterized in that the method comprises the following steps: 1), building an infinite sequential gaming model for representing the timing moment of each phase signal of a single intersection, and determining a revenue function and a discount factor of the model; 2), obtaining a revenue function calculation parameter of each phase of the single intersection in a current period and a queuing length of each phase in a former period through a vehicle-road cooperation system, whereinthe revenue function calculation parameter and the queuing length are used for the gaming calculation of a sequential model; 3), taking each phase of the single intersection as a participant of the infinite sequential gaming model for sequential gaming, and calculating and obtaining the passing time distributed to each phase of the single intersection in a current period according to an obtained sequential gaming equilibrium solution and the duration of a period of the single intersection. The method can be widely used in the field of single intersection signal timing.

The invention discloses a resource optimal distribution method and device based on correlation equilibrium regret value matching. The method comprises the following steps: constructing an ultra-densewireless network model about a plurality of user nodes by taking system throughput maximization as an optimization target; according to the ultra-dense wireless network model, modeling the multi-dimensional spectrum access optimization problem of the user nodes as a non-cooperative game model; based on the non-cooperative game model, iteratively updating the frequency band selection of the user node through a regret value matching algorithm to obtain a coarse correlation equilibrium solution of the non-cooperative game model; and obtaining a multi-dimensional spectrum access mode of the user node according to the coarse correlation equilibrium solution. Through the regret value matching algorithm, the random finiteness of channel selection and the convergence of the learning algorithm areutilized to obtain the frequency spectrum sharing mode meeting the related balanced mixing strategy through regret matching, the fairness among users is ensured, the frequency spectrum utilization rate is improved, and better network performance is achieved.

The invention provides a multi-unmanned aerial vehicle cooperative target allocation method and system in a confrontation environment. Based on a possible occupation strategy and a target allocation strategy of two confronting parties, a target confronted by each unmanned aerial vehicle of the own side is decided, a zero sum matrix game model is established, and the problem of multi-unmanned aerial vehicle cooperative target allocation in a confronting environment is solved by solving a mixed strategy Nash equilibrium solution of the model. Further, the zero sum matrix game model is solved; agame matrix of an extensible game is established and a current hybrid strategy Nash equilibrium is obtained; then, a variable placeholder iterative search mode is used to solve a third game strategy and a fourth game strategy for the two game parties to execute an extensible matrix game equilibrium solution to each other; and the game matrix of the extensible game for determining the most advantageous game strategy by one party in the solved confrontation is determined by utilizing an iterative method, and the determined game matrix of the extensible game is solved, so that the calculation amount can be effectively reduced, and the calculation efficiency is improved.

The invention discloses a price guidance-based coordinated autonomous optimization operation method for a multi-microgrid system. The method comprises the following steps of establishing a double-layer decision-making system comprising an intermediate agent and each microgrid autonomous agent based on a multi-agent technology; each microgrid autonomous agent (MGA) obtaining each microgrid data, formulating a microgrid optimal scheduling plan according to the electricity price information, and then transmitting the surplus/deficiency information to the intermediate agent MA; the MA formulating an electric energy transaction price mechanism in the MMG system according to the surplus and deficiency information of each microgrid and the supply-demand relationship; and each microgrid autonomous agent (MGA) and the intermediate agent (MA) carrying out multi-time price interaction feedback until an equilibrium solution set is generated, and each microgrid autonomous agent (MGA) issuing a final optimization scheduling plan to each microgrid energy management system for execution. According to the present invention, the optimized operation of each microgrid is guided through price, and on the basis of ensuring benefits and privacy of each microgrid, the on-site consumption capacity of clean energy and the economic and environment-friendly operation performance of the system can be improved.

The invention discloses an ovary vitrification cryopreservation method under intervention of luteinizing hormone. The ovary vitrification cryopreservation method comprises the following steps: soaking an in-vitro ovary into a culture solution, putting into a constant-temperature incubator with 5 percent of CO2 at the temperature of 37 DEG C for culture, then transferring into a permeable cryoprotective agent-containing ethylene glycol pre-equilibrium solution for soaking, after then, transferring into a high-concentration cryoprotective agent-containing vitrified cryopreservation fluid for continuous permeable equilibrium, and finally transferring into liquid nitrogen for soaking for at least 24 hours. A thawing process comprises the steps of taking out the cryopreserved ovary from the liquid nitrogen, placing the ovary into 0.50 mol/L, 0.25 mol/L and 0.125 mol/L of thawing solutions which are preheated at the temperature of 37 DEG C and has the sucrose concentration gradually decreased in sequence for 10 min, then transferring the ovary into the culture solution, and putting into the constant-temperature incubator with 5 percent of CO2 at the temperature of 37 DEG C for culture; the culture solution, the pre-equilibrium solution, the vitrified cryopreservation fluid and the thawing solution contain the luteinizing hormone, so that the survival rate of the cryopreserved ovary can be increased, and the reproductive function and the endocrine function can be retained to a relatively large extent.

The invention discloses a virtual power plant based equilibrium cooperative game controller. The virtual power plant based equilibrium cooperative game controller comprises an electric quantity prediction module, a communication interface module, a cooperative game party behavior analysis module and a cooperative game algorithm module. The invention provides an algorithm for quasi-power plant internal cooperative game equilibrium solution, which can obtain a virtual power plant operation scheme with optimal economic benefit. A predicted power generation value is obtained by analyzing the related information and historical power generation data of each distributed power source, and the predicted power generation value is transmitted through the communication interface module; and the transmitted information is inputted into an opponent behavior analysis module to obtain an opponent's predicted bidding behavior, and the opponent's predicted bidding behavior is then inputted into the cooperative game algorithm module to obtain the optimal economic benefit of an alliance and individual joint.

The invention belongs to the technical field of wireless communication, specifically a decision method for a mapping policy in a virtual network. The method comprises the steps of establishing a Markov decision process optimization model according to mapping resources; solving a centralized optimum mapping policy through adoption of a Markov decision process; defining various virtual network requesters as buyers and defining substrate networks as sellers, and establishing a Stackelberg buying and selling model; solving a current equilibrium solution of a Stackelberg game and taking the currentequilibrium solution as the optimum resource capacity and the optimum selling price in a current phase; predicting a future equilibrium solution, and taking the future equilibrium solution as the optimum resource capacity and the optimum selling price in a future phase; and evaluating a mapping relationship between the buyers and the sellers according to the current equilibrium solution and the future equilibrium solution, thereby determining a distributed optimum mapping policy. According to the method, the load balance of the substrate networks is effectively improved, and the network performance is optimized.

The invention discloses a cooperation method for installing electric vehicle charging piles in a residential area from a tripartite perspective. The method includes: before building a model, making assumptions about the tripartite relationship between the charging pile operator, the property of the residential area, and resident users, and giving the benefits of the three parties Cost function value; build a game model under the existence of three parties and find the equilibrium solution; analyze the results of the tripartite cooperation for the model equilibrium solution and give a plan for the tripartite cooperation. The method disclosed in the present invention distributes the interests of installing and using charging piles among the charging pile operators in the residential quarters, the residential property and the resident users, and obtains the preconditions for cooperation between the three parties, and realizes the electric vehicle A solution for the smooth installation and use of charging piles. In the process of solving, not only the role of the power grid system as the installation operator of charging piles, but also the importance of community property maintenance and the willingness of community residents to use electric vehicles were considered.

An equilibrium solution, such as a beverage product, containing a calcium salt of a sequestrant (such as calcium hexametaphosphate), coordinated compound of a calcium sequestrant and a sequestrant allows the delivery of bio-available calcium while maintaining the preservative qualities of the sequestrant (such as sodium hexametaphosphate). In one embodiment, the reaction of a salt such as calcium hydroxide and a sequestrant such as sodium potassium hexametaphosphate (sodium potassium polyphosphate) yields such an equilibrium solution in a beverage matrix. Calcium hexametaphosphate having a relatively short phosphate chain is disclosed, as well as the method of making that material, and beverage compositions containing the material together with a sequestrant preservative, such as SHMP.

A method of post-solidification processing to minimize the content of extremely coarse grain-refining precipitates that may form during solidification is low-alloy and alloy high-strength steels containing approximately 0.09-0.17% by weight C so as to provide improved toughness in a wrought and heat-treated product. The method entails cooling an as-cast steel at a reduced rate in a furnace held at a temperature in excess of the equilibrium solution temperature for AlN in austenite. The steel is maintained at this temperature for a sufficient amount of time to effect the dissolution of coarse AlN precipitates in the microstructure, and the so-treated steel is then cooled at any desired rate to room temperature or to a hot-rolling temperature.