5results about How to "Overcome security" patented technology

The invention provides a capacity attenuation trend prediction method of a low-temperature lithium battery, and relates to the technical field of battery health management and prediction. The capacity fading trend prediction method of the low-temperature lithium battery specifically comprises the following steps of S1, initial data acquisition, S2, feature extraction, S3, hybrid prediction model construction, S4, model training and offline verification, S5, online deployment and dynamic correction, and S6, SOH evaluation and early warning output. A hybrid prediction model is constructed by fusing an electrochemical mechanism and deep learning, so that high-precision prediction and full-life-cycle intelligent health management of lithium battery capacity fading in a low-temperature environment are realized, and the problems of accelerated battery aging and prominent safety risk in an alpine region are effectively solved; early warning and intelligent management of the health state of the battery can be realized, and the service life of the battery under low-temperature application can be prolonged.

The invention relates to a method for preparing cyclododecanone oxime, which comprises the following steps: S1, in the presence of a molecular sieve catalyst, carrying out hydrolysis reaction on an oxime compound and water to obtain a hydrolysis reaction product, and carrying out solid-liquid separation on the hydrolysis reaction product to obtain a solid-phase hydroxylamine molecular sieve and a liquid-phase product; and S2, mixing the solid-phase hydroxylamine molecular sieve, cyclododecanone and an optional solvent, and carrying out an oxime exchange reaction. According to the method provided by the invention, the problems that the catalyst and the reaction liquid are difficult to separate and the catalyst cannot be recycled can be effectively solved, the separation and purification process of the product and the reaction liquid in the oxime exchange reaction is effectively simplified, and a relatively high raw material conversion rate can be realized in a reaction system with relatively small dosage of cyclododecanone. In addition, the method disclosed by the invention is simple to operate and mild in condition, can realize continuous feeding and continuous reaction to generate hydroxylamine, and has a relatively good application prospect.

This application provides a network security risk assessment and analysis system, method, and related equipment. By setting up physical security, network security, and management security modules, it comprehensively collects and monitors data from three core dimensions: the physical environment of the data center, network system operation, and personnel management. This enables real-time perception of data center environmental risks and effectively overcomes the shortcomings of traditional assessment methods that only focus on single or partial security elements, ensuring the comprehensiveness and systematic nature of risk assessment. The risk assessment and analysis module is connected in real-time to the above three modules, continuously receiving and analyzing various types of security data, realizing a shift from static assessment to dynamic monitoring. Through real-time correlation and analysis of comprehensive data, potential security risks can be accurately identified, and warnings can be issued promptly based on preset warning conditions. This overcomes the lagging and passive nature of traditional assessment methods, truly achieving prevention before problems arise and significantly improving security response speed and accuracy.

The invention relates to a method for preparing cyclododecanone oxime, which comprises the following steps: in the presence of a solid acid catalyst, cyclododecanone, an oxime compound and an optional solvent are mixed for oxime exchange reaction, and the solvent is a non-acidic solvent. According to the method disclosed by the invention, the oxime in the oxime compound is replaced by cyclododecanone under the action of the solid acid catalyst instead of using a liquid acid catalyst, so that the problems that the liquid acid catalyst is difficult to separate from the reaction liquid, the catalyst cannot be repeatedly used and the like are solved; the separation and purification process of the product and the reaction liquid in the oxime exchange reaction process is effectively simplified, and the method is a continuous and green production process and has a better application prospect.

The invention relates to the field of complex electromechanical system health management, in particular to a complex electromechanical system maintenance opportunity decision-making method under overload operation. The method comprises the following steps: constructing a performance evaluation model based on a belief rule base, defining key feature indexes, overload environment attributes and reference levels thereof, rule weights and attribute weights, and presetting consequent confidence distribution for each rule; monitoring data are collected, the matching degree of the key feature indexes in each rule is calculated, meanwhile, an overload cumulative index is constructed, and the matching degree of overload environment attributes is calculated; calculating a rule activation weight based on the two types of matching degrees, multiplying consequent confidence distribution by the activation weight, fusing by adopting an evidence reasoning algorithm to obtain confidence distribution of a system performance state, and further calculating an output utility value; and determining an optimal maintenance opportunity based on a preset mapping relation. According to the method, the overload environment attribute is introduced into the activation weight calculation, so that the accuracy of health assessment under the overload working condition is improved.