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40results about How to "Avoid including" patented technology

IP white list building method based on intranet traffic

InactiveCN107294966AImprove efficiencyReduce processing trafficTransmissionData bankNetwork data
The present invention relates to the field of an intranet traffic monitoring system and an IP white list building method, and aims to provide an IP white list building method based on intranet traffic. The method comprises: first capturing the network data packets communicating between an intranet and an extranet; extracting the information in the data packet headers (including the quintet information, the generation time and data packet sizes); using the information in the data packet headers to form a network data stream with the network data packets and at the same time, saving the information of the data stream in a database as the basic data to build a white list; and finally, using the rules proposed by the method of the invention to establish the IP white list, wherein the rules include: judging whether the uplink/downlink ratio of the data stream satisfies the condition or not; judging whether the number of accessing times by the user of the IPs of the same intranet to the IPs of the external network satisfies the condition for a certain period of time or not; judging whether the number of accessing times by the how many IPs of the intranet to the IPs of the same extranet in a certain period of time satisfies the condition or not; and judging whether the accessing behavior by IPs of extranet meets condition or not in a non-working period. Unlike the traditional IP white list building method, the white list can be generated by the method with high efficiency. The calculation cost and time cost in doing so are low. The generated white list is highly targeted and credible, effectively reducing the data amount required by an internal network security monitoring system.
Owner:SICHUAN UNIV

Multi-threshold squall line identification method based on radar echo three-dimensional puzzle

The invention discloses a multi-threshold squall line identification method based on a radar echo three-dimensional puzzle. The multi-threshold squall line identification method comprises the following steps of A, converting a current volume scan data of a new generation weather radar net into radar echo intensity three-dimensional puzzle data; B, conducting storm cell automatic identification for the radar echo intensity three-dimensional puzzle data by using a storm cell identification tracking algorithm; C, according to statistical analysis results of convective cloud characteristics in a squall line identification region, setting multiple sets of thresholds of parameters required for squall line identification to form multiple sets of parameter schemes; and D, designing a dynamic template and a score function method by using a fitted ellipse long axis, conducting squall line identification respectively using the multiple sets of parameter schemes, if one or more of linear scores corresponding to multiple sets of identification results are higher than a set score, taking the identification result of the highest linear score as the squall line identification result. The invention greatly improves the accuracy of the squall line identification and provides a reliable early warning mechanism for thunderstorm weather forecast.
Owner:STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2

Method for high-density fermentation of selenium-enriched lactobacillus reuteri

The invention discloses a method for high-density fermentation of selenium-enriched lactobacillus reuteri. A high-density fermentation selenium-enriched lactobacillus reuteri bacterium is obtained byusing an improved culture medium with cane sugar, the capability of a fermentation liquid of a unit volume in digesting and absorbing inorganic selenium is improved, the concentration of selenium in the fermentation liquid is controlled to be at a relatively low level through second-stage selenium replenishment, the inorganic selenium in the fermentation liquid is completely converted into organicselenium in the lactic acid bacteria in the fermentation process of the lactic acid bacteria, in addition, as the concentration of the selenium in the fermentation process is controlled, bacterial can grow without limit, a relatively high viable bacterial concentration can be achieved within 24 hours, the problem that lactic acid bacteria grow slowly as the content of the inorganic selenium in the culture medium of a conventional process is far higher that the resistance of the lactic acid bacteria is solved, and meanwhile the problem that the bacterium comprises elemental selenium is avoided. Therefore, the selenium-enriched lactobacillus reuteri fermentation liquid disclosed by the invention has the advantages of both complete organic selenium and high viable counts. In addition, a finally obtained microecological preparation has only organic selenium.
Owner:HUAQIAO UNIVERSITY

Positioning system, and synchronous controller networking system of positioning system

The invention discloses a synchronous controller networking system of a positioning system. The synchronous controller networking system comprises a first synchronous controller, a first set of positioning base station groups, a second synchronous controller, and a second set of positioning base station groups. A first positioning base station in each positioning base station group of the first set of positioning base station groups is coupled to the corresponding interface of the first synchronous controller so as to receive a synchronization signal and send the received synchronization signal to positioning base stations of the above positioning base station group. The second synchronous controller is coupled to the first synchronous controller or any one positioning base station in the first set of positioning base station groups so as to receive the synchronization signal. A first positioning base station in each positioning base station group of the second set of positioning base station groups is respectively coupled to the second synchronous controller to receive the synchronization signal. According to the invention, the positioning system of the present invention may contain a large number of positioning base stations, so that the expansion of a to-be-positioned area can be realized. The hierarchical cascade is realized by adopting synchronous controllers, so that the data returning period is shortened. The positioning real-time property is improved.
Owner:KUNCHEN TECH CO LTD

Vehicle-mounted Lidar steel rail point cloud extraction method based on generalized neighborhood height difference

The invention discloses a vehicle-mounted Lidar steel rail point cloud extraction method based on generalized neighborhood height difference. The vehicle-mounted Lidar steel rail point cloud extraction method specifically comprises the following steps: 1, segmenting track bed point cloud according to a scanning angle or a track line of a vehicle-mounted Lidar point cloud; 2, adopting a statisticalfiltering algorithm to remove noise points caused by shielding factors of the steel rail in the ballast bed point cloud, and obtaining the ballast bed point cloud with the noise points removed; 3, carrying out columnar neighborhood search on one point in the ballast bed point cloud; 4, calculating the generalized neighborhood height difference of the point based on the columnar neighborhood; 5, repeating the step 3-4 until the generalized neighborhood height difference calculation of all points of the ballast bed area is completed, and a histogram is made; and 6, combining track knowledge anda generalized neighborhood height difference histogram to extract a steel rail vertex cloud. The vehicle-mounted Lidar steel rail point cloud extraction method can automatically extract the whole-line continuous steel rail vertex cloud, improves the extraction precision of the steel rail point cloud, is less in dependence on additional data, and is simple to implement.
Owner:SOUTHWEST JIAOTONG UNIV

Phellinus linteus mother strain tissue isolation transfer-tube culture method

The invention discloses a phellinus linteus mother strain tissue isolation transfer-tube culture method, mainly aiming at solving the problems of an existing phellinus linteus mother strain culture method which is too low in one-time inoculum size, slow in mycelium germination rate, high in pollution rate and the like. The culture method disclosed by the invention comprises the following steps: (1) cutting a massive tissue from a fruiting body of phellinus linteus, inoculating the massive tissue into a test-tube culture medium, and culturing in a constant-temperature darkroom until yellow villous mycelia appear; (2) when the mycelia are 2-3cm away from the massive tissue, picking the culture medium containing edge mycelia, transferring and culturing in another test-tube culture medium, and transferring for more than one time so as to obtain purified mycelia; and (3) as the test-tube culture medium is full of the purified mycelia, dicing the test-tube culture medium full of the purified mycelia, and inoculating and culturing the massive culture medium on an enlarged culture medium so as to obtain a phellinus linteus mother strain. The culture method disclosed by the invention has the advantages of effectively increasing the one-time inoculum size, reducing labor intensity, accelerating a germination rate, reducing a pollution rate and the like.
Owner:四川中瑞华航商贸有限公司

Numerical simulation method of controllable source in 3D frequency domain

The invention provides a three-dimensional frequency domain controllable source numerical simulation method. The method comprises the steps of S100: defining a calculation region in a resistivity anomaly body and an adjacent wrapping layer, and dividing the calculation region into multiple regular unit bodies; S200: calculating an initial electric field under an artificial source excitation condition, and by adopting a weighted residual method, establishing a finite element equation set of edge midpoints of the unit bodies in the calculation region; S300: defining an observation point as a boundary node by using a Green function, and enabling a secondary electric field of an internal node to express a secondary electric field of the boundary node; S400: substituting a Green function expression into a mixed equation set to obtain a first equation set only about the secondary electric field of the internal node; and S500: solving the first equation set to obtain secondary electric fieldvalues of nodes comprised in the unit bodies. According to the method, a vector finite element method and a volume integral equation method are applied; the calculation region is reduced; the calculation amount is reduced; the calculation precision is improved; formed equations are sparse in coefficient matrix and good in condition number; and a calculation result is accurate.
Owner:CENT SOUTH UNIV

Decoating liquid

InactiveCN100516304CEnhanced viscosity coefficientAvoid runningChromium trioxidePlastic materials
A kind of deplating solution for smearing, it comprises sulfuric acid, oxidizing agent and thickening agent, and described oxidizing agent comprises at least one in nitric acid, hydrogen peroxide, potassium permanganate, potassium dichromate and chromium trioxide, and described thickening agent It is at least one of polyvinyl alcohol and hydroxyethyl cellulose. It can also include the anti-staining salt sodium m-nitrobenzenesulfonate that can remove copper layer and nickel without corrosion on the plastic surface, and can also include the accelerator copper sulfate used to accelerate the removal of copper layer. The stripping solution of the present invention , due to the thickener polyvinyl alcohol, which enhances the viscosity coefficient of the stripping solution, it is very suitable for partial smearing and deplating on the surface of the product, avoiding the flow of the stripping solution, so as to ensure a good effect of smearing and deplating; further due to The oxidant does not include nitric acid, which can effectively reduce the adverse effects of corrosion on the plastic material itself during deplating. In addition, it will not produce a large amount of NO2 yellow smoke due to the existence of nitric acid, which can reduce environmental pollution and avoid corrosion of workshops and equipment. .
Owner:MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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