3results about How to "Optimization mechanism" patented technology

The application relates to a carrier information modulation and demodulation method of a controllable resonant magnetic pulse through-the-earth communication transmitter, and the method comprises the following steps: generating a magnetic pulse signal through a hardware topology of a magnetic pulse signal transmitter, wherein the hardware topology comprises a switch, a unidirectional conducting switch, a resonant capacitor and a solenoid; dividing the working period of an LC resonant system into four stages by controlling the conduction and shutdown of the switch and the unidirectional conducting switch; generating a non-continuous magnetic resonant signal pulse by dynamically adjusting the duration of each stage; designing an information modulation mechanism based on orthogonal code elements, generating the waveforms of code element 0 and code element 1, and ensuring the orthogonality by verifying the autocorrelation and cross-correlation; and realizing information demodulation at a receiving end by calculating the cross-correlation between the input non-continuous magnetic resonant signal and code element 0 and code element 1. The application solves the contradiction between radiation efficiency and signal bandwidth which cannot be considered in the existing through-the-earth system and modulation and demodulation method.

The present application relates to a kind of solar interface evaporator evaporation performance prediction method and simulation system, comprising: constructing multiscale dynamics model to carry out molecular dynamics simulation, obtain hydrogen bond coordination statistical result;Macroscopic interface evaporation simulation model is constructed to carry out interface evaporation molecular dynamics simulation, obtain interface water density stratification result, evaporation rate and evaporation enthalpy;The interaction energy between sodium alginate and water molecule and hydrogen bond binding energy are calculated;Core interface water structure parameters such as hydrogen bond interference efficiency, low coordination water molecule proportion and low density liquid domain proportion are defined and quantified;Temperature, sodium alginate concentration and core interface water structure parameter are input characteristics, and multi-objective regression prediction model is constructed, realizes the prediction and optimal working condition screening of interface evaporation performance.Compared with prior art, the present application has the advantages of realizing the precise simulation, quantitative analysis and performance prediction of solar interface evaporator evaporation performance.

The specification discloses a spatio-temporal knowledge graph construction method, system and device for ecological risk prediction, which accesses spatio-temporal data through a platform data interface, structurally processes the spatio-temporal entity model data containing geometric attributes, time attributes and state attributes, constructs a hybrid spatio-temporal index combining spatial index and time index, performs spatial range retrieval on an entity model library according to a given target entity, determines a candidate entity set, combines the state attributes, calculates the correlation strength between entities through a preset quantitative calculation model, generates an enhanced relationship edge containing a weight value and a quantitative indicator, maps the spatio-temporal entity and the enhanced relationship edge to a graph database, and obtains a spatio-temporal knowledge graph; receives a query request containing spatio-temporal constraint conditions and attribute filtering conditions, performs graph traversal and screening based on the weight value and the quantitative indicator of the enhanced relationship edge, and outputs a query result; and updates the spatio-temporal knowledge graph according to a preset data cycle.