35 results about "Steady state distribution" patented technology

A rhodium sulfide electrocatalyst formed by heating an aqueous solution of rhodium salt until a steady state distribution of isomers is obtained and then sparging hydrogen sulfide into the solution to form the rhodium sulfide and a membrane electrode assembly with the said electrode and a process for electrolyzing hydrochloric acid.

The invention discloses a multi-energy online control system for data centers under dynamic cloud service requests. The multi-energy online control system for data centers under dynamic cloud service requests comprises a system status monitoring module, a load scheduling module and a multi-source energy supply system management module, wherein the load scheduling module comprises a delay-sensitive request scheduling sub-module and a delay tolerant job scheduling sub-module. The system status monitoring module is used for receiving service requests from a user's cloud service every once in a while, determining whether the cloud service request is a delay-sensitive request or a delay tolerant job, and sending the cloud service request belonging to the delay-sensitive request to the delay-sensitive request scheduling sub-module of the load scheduling module while sending the cloud service request belonging to the delay tolerant job to the delay tolerant job scheduling sub-module of the load scheduling module. The multi-energy online control system for data centers under dynamic cloud service requests has the advantages that long-term operating cost of data center energy supply system can be optimized, no system data is needed to be obtained in advance, and no steady state distribution is needed to be assumed.

The invention relates to a method of a cluster computer for simulating electromagnetic wave propagation. The method comprises the following steps of: dispersing an electromagnetic wave propagation space into three-dimensional grids, dividing a simulation area into blocks by using an overlapping area disassembly method and constructing model data files; reading the corresponding model data files by each computation node of the cluster computer respectively, simulating the electromagnetic wave propagation by using a parallel electromagnetic field time-domain pseudo-spectrum method and outputting a file recording the steady-state distribution of an electromagnetic field in a space; and obtaining the distribution of a far-field scattered field by utilizing a near-field extrapolation far-fieldprogram. Compared with the traditional method, the invention has the following advantages that: the method can be used for simulating the electromagnetic wave propagation of point-source excitation; the large-scale electromagnetic wave propagation can be efficiently simulated in parallel; the iteration frequency in the simulation is reduced; and the far-field result is more accurate.

The invention discloses an initial cavitation threshold distribution rebuilding method based on ultrasonic active cavitation imaging. The method comprises the steps of: firstly, emitting a synchronizing signal to a cavitation power source and a full-digitalized ultrasonic imaging device by a signal generator; stimulating a medium through continuous variable power to generate the cavitation by the power source; simultaneously emitting a plane wave and receiving a cavitation echo signal by the full-digitalized ultrasonic imaging device; achieving a cavitation bubble distribution imaging sequence with high resolution and high signal-to-noise ratio through the echo signal by synthetic aperture time delay, correlation coefficient adaptive beam synthesis and interframe decorrelation SSD (steady-state distribution); carrying out region segmentation and extracting a sub-area power intensity curve (PIC) from a sequence image; setting an intensity threshold in the PIC; taking the power corresponding to the intensity threshold as a cavitation initial threshold; and rebuilding the initial cavitation threshold space distribution by pseudo color coding after the initial threshold of each sub-area is obtained. By adopting the method disclosed by the invention, the intuitive image analysis is provided for a cavitation bubble distribution state under the effects under different powers and different parameters; and the foundation is provided for the cavitation analysis of different mediums.

The invention discloses a web service response time predicting method based on increment steady-state analysis, belonging to the field of software performance prediction. The method comprises the following steps: obtaining a sequence of a series of measurement values of network service response time according to a fixed unit time interval; subsequently defining and calculating observation window response time increment types; calculating a transition probability matrix among the types; then calculating a steady-state distribution probability of the response time increment based on the transition probability matrix; and finally adding a calculated increment expected value to a response time measurement value at the t moment so as to obtain the prediction value of the response time at the t+1 moment. With the adoption of the method, the defects that traditional Web prediction mold and method depend too much on SLA (Service-Level-Agreement) specifications and hypothesis parameters are constant and unchanged are avoided; and mold support and analysis means are provided for WEB service credibility research.

The invention discloses a capacitance boundary-based single-end all-line quick-action protection method of a power distribution line. By the capacitance boundary-based single-end all-line quick-action protection method, internal and external in-phase faults of the power distribution line can be rapidly and reliably identified, and relatively high transition resistance capability is achieved. A parallel capacitor at each bus of the power distribution line is used as a boundary component for steady-state distribution compensation and transient-state fault identification, a fault transient-state voltage characteristic is limited in a fault line by a reflection effect of the capacitor on a step fault travelling wave, the transient-state energy difference of a voltage time domain during the internal and external faults is analyzed and extracted by a small wave, and the configuration of an all-line quick-action protection scheme is achieved by comprehensively considering current amplitude characteristic before and after the faults. By the capacitance boundary-based single-end all-line quick-action protection method, current weak protection configuration of the power distribution line is favorably improved, and a protection foundation is provided for a power distribution system containing a large amount of distributed power supplies.

The invention discloses a method for analyzing random variables in a regional comprehensive energy system based on a coupled Markov model, including: determining and analyzing random variables in the comprehensive energy system; modeling photovoltaic power generation equipment; modeling wind power generating equipment; building multiple loads model; conduct single-Markov model modeling analysis on each random variable in the integrated energy system; based on the single-Markov model, comprehensively analyze the random changes in the integrated energy system, and construct multiple random variables by analyzing multivariate load data Coupled Markov model: Based on the coupled Markov model to analyze the integrated energy system, calculate the steady-state distribution of the coupled Markov model, calculate the expectation and variance of the integrated energy system, and adjust the multiple loads and energy storage equipment. The invention can realize the coordinated control of the source, the load and the storage of the multi-energy system, and guarantee the safe and stable operation of the system.

The present invention discloses a method for calculating a second-order Markov chain by using a chemical reaction network. The method comprises the following steps: S1: designing a chemical reaction network to represent different states in a target second-order Markov chain with different reactant species, and setting the initial concentration of the corresponding reactants according to the initial probability distribution of the states of the target second-order Markov chain; S2: implementing transition of each state transition of the target second-order Markov chain through a bimolecular reaction, wherein each reactant represents two states before the transition, and the product represents the two states after the transition; S3: using the rate constant of each reaction to represent thetransition probability of the corresponding state transition, and setting the rate constant according to the value of the transition probability; S4 : removing the invalid reaction in the reaction network; and S5: calculating the steady-state distribution of the target second-order Markov chain, wherein the steady-state concentration of all the reactants after the reaction ends is the probabilityvalue of the steady-state distribution. The method disclosed by the present invention can implement the calculation of a second-order Markov chain.

The invention discloses a network resource allocation method and device. Wherein, the method includes the following steps: obtaining the service distribution state data at multiple sampling moments of the local network; calculating the time interval during which the local network is in a stable state according to the service distribution state data at multiple sampling moments; Adjust the network resources allocated to the local network within the time interval. Through the above method, the present invention can rationally allocate network resources at an appropriate time and improve the utilization rate of network resources.