373 results about "Network analysis" patented technology

Embodiments of the invention provide a method for determining errors and metrics in a computer network. The method includes positioning an analyzer in communication with the network, capturing a data trace of the network with the analyzer, determining a network device topology from a first processing of the data trace, building user layer protocols using a second processing of the data trace and the determined device topology, determining errors in the network device topology using protocol experts applied to the user layer protocols in conjunction with the determined device topology, and displaying at least one of the device topology and the determined errors to a user.

The present invention is implemented by deploying an enhanced ground fault detection and location apparatus and by using the apparatus in conjunction with specific circuit analysis methods, using the information generated by the ground fault detection and location apparatus. The ground fault detection and location apparatus comprises the functionality of a voltmeter, an ammeter, a frequency generator, and a variable power supply, thereby providing for a variety of signals and analyses to be performed on a unintentionally grounded circuit in an ungrounded AC or DC power distribution system. The apparatus includes a main unit and a remote unit, which may be a portable hand-held unit. In a first mode, the apparatus of the present invention can be used to detect ground faults. By switching to a second mode, the apparatus of the present invention can be used to locate ground faults. The methods of the present invention involve the generation of various signals by the main ground fault detection and location unit. The generated signals are introduced into the electrical distribution system and monitored by various means, including one or more remote units. By analyzing the system-level response to the generated signals, the specific location of the ground fault or faults can be more readily ascertained, thereby promoting rapid and efficient repair and recovery practices. The apparatus of the present invention may be implemented as a dedicated, permanent installation or as a temporary portable system. Additionally, the system may be implemented as an automatic computer-controlled ground fault location and detection system.

Analysis of an electrical circuit is performed using a computer program product (60) and a method. In accordance with the program and the method, a electrical circuit analyzer generates an admittance matrix for an electrical circuit which is being analyzed. The admittance matrix includes symbolic expressions rather than numerical expressions for at least some components of the electrical circuit. The electrical circuit analyzer linearly and algebraically solves an equation system including the admittance matrix for analyzing at least a part of the electrical circuit. The electrical circuit analyzer uses symbolic computation to solve the equation system including the admittance matrix for analyzing at least a part of the electrical circuit. The equation system including the admittance matrix can be solved in various types of analyses, including (1) determining a transfer function between specified nodes of the electrical circuit; and (2) optimizing a component of the electrical circuit. The electrical circuit analyzer sets up the admittance matrix Y by following a set of “rules”. Special rules are provided for certain telecommunications components, such as multi-winded transformers, loading coils, line-drivers, analogue cables, and filters. Inclusion of these special rules for telecommunications components enables the electrical circuit analyzer to be more applicable to telecommunications circuits than conventional analyzers. In accordance with a block/subcircuit matrix approach, an overall circuit is divided into plural subcircuits. In such case, the admittance matrix can comprise separate admittance blocks for each of plural subcircuits. Connectivity blocks which represent connectivity between the plural subcircuits are situated on a cross diagonal of the admittance matrix. The admittance matrix can then be conveniently utilized for analyzing at least a part of the electrical circuit. Advantages of this approach include recursively reducing the size of the matrices including the admittance matrix as subcircuits are added to the admittance matrix.

The invention discloses a real-time processing system of a universal network data packet and a method thereof, which are characterized in that a data packet format converting module and an acquisition engine module are embedded between a data packet acquisition module and a network analysis module, wherein the data packet format converting module converts the data packet headers of various formats into data packet headers of uniform format; and the acquisition engine module is used for dispatching processing threads and distributing threads as well as managing operation of all adapter modules and filters. Therefore, the invention realizes unified data packet header format, batch processing of the data, high-efficient network analysis and simple operation, and simultaneously has the advantages of openness, expandability and independence of modules.

The invention relates to an integrated correcting system and correcting method applied to different active array antennas. The integrated correcting system includes an active array antenna, a high-precision measurement real-time compensation unit, a testing probe, an industrial personal computer, a vector network analysis meter, a RF cable, and a low frequency cable. According to the invention, the integrated correcting system is advantaged by high correcting precision, short correcting time, simplicity and easiness of implementation, strong universality and excellent industrial reliability.

Computer-implemented techniques for verifying ESD device connectivity in an IC include the steps of: receiving an input dataset including layout parameters corresponding to the integrated circuit; identifying ESD devices based at least in part on the input dataset; extracting devices and parasitic elements in at least a portion of the integrated circuit based at least in part on the input dataset; generating a file including connectivity information and dimensional characteristics for extracted devices and parasitic elements associated with at least ESD protection circuitry in the integrated circuit; identifying at least one ESD test based on the identified ESD devices and on connectivity to the respective ESD devices; and performing a linear network analysis for each identified ESD test based at least in part on the netlist evaluated under ESD conditions, the identified ESD devices being removed from the network analysis, the network analysis being used to ensure that current densities through respective conductive connections included in the identified ESD test are less than or equal to a first prescribed threshold, and/or voltage drops associated with the respective conductive connections are less than or equal to a second prescribed threshold.

The invention discloses a botnet, Trojan horse and worm network analysis method based on logs. The method comprises the steps that step 1, a DNS log and a RADIUS log are obtained; the DNS log comprises date, time, visit information, IP request information, domain name request information, domain name request characteristics, type analysis, IP information analysis and DNS server characteristic information; step 2, log cleaning is performed on the DNS log and the RADIUS log, fields which have no influence on statistics are deleted, fields which influences a statistical result are retained or modified; step 3, a suspicious domain name which confirms with specific characteristics is obtained according to common behavior characteristics of a known botnet, Trojan horse and worm network and a computer which has virus of botnet, Trojan horse and worm; step 4, according to the user visit DNS log and RADIUS log of the suspicious domain name, the characteristics of user groups which visit the suspicious domain name are analyzed, and a domain name of the botnet, Trojan horse and worm is determined according to the characteristics of the user groups.

The embodiment of the invention discloses a multi-layer integrated circuit layout polygon alignment and simplification processing method and device. The method comprises the following steps of projecting a plurality of polygons of a multilayer integrated circuit layout to a same layer, and forming a Delaunay triangular mesh according to a Delaunay triangulation algorithm; aligning the Delaunay triangular mesh to each edge of each polygon, calculating the intersection points of the edges of each polygon, and adding the intersection points into the polygon vertexes and the Delaunay triangular mesh nodes to form a first triangular mesh; on the basis, forming the inner and outer auxiliary polygons for clamping the polygons inside and outside each polygon, and controlling the distances betweenthe inner and outer auxiliary polygons and the polygons through the distance thresholds; and aligning and simplifying the edges of each layer of polygons falling between the inner and outer auxiliarypolygons. According to the present invention, the fragmentation problem after the multilayer polygons form the parallel flat plate field domain can be reduced, the unnecessary dense grids are reduced,the analysis and solving time and the required memory of the multilayer integrated circuit are shortened, the gaps among the polygons can be reserved, and the integrated circuit layout shape is basically not changed.

A method and system for providing communication analysus of user equipment based on network analysis is disclosed. The method provides communication analysis of UE in a form as communication statistics or communication prediction by analyzing a network data collected form the NF device.

The invention provides a mixed transient-state analysis method used for a multi-energy complementary comprehensive energy system and a mixed transient-state analysis system. A mixed transient-state model of the multi-energy complementary comprehensive energy system is constructed, a mixed-step-length transient-state analysis method is used for network analysis on a multi-energy coupling system, thus system-level analysis and calculation can be effectively supported, mixed transient-state simulation of long-term transient-states-power-system electromechanical-transient-states in a non-electrical system can be carried out from a time-domain angle, and precision of whole-process simulation on the system can be improved.

The invention provides a slice resource scheduling method and a network element. The method comprises the steps of acquiring analysis data of slices; analyzing and updating the analysis data to obtaina data analysis result; and sending a data analysis result to a network slice selection function NSSF or a policy control function PCF. The NSSF obtains a data analysis result of the slice from a network analysis logic function NWDAF; and slice-level KPIs and network performance adjustment are carried out according to the data analysis result. The PCF obtains the data analysis result of the slicefrom the network analysis logic function NWDAF; and strategy configuration adjustment is carried out on different slices according to the data analysis result. According to the NWDAF provided by theembodiment of the invention, the data analysis result can be obtained according to the analysis data of the current network, the data analysis result is distributed to the NSSF or the PCF, and the NSSF or the PCF dynamically adjusts the slice resources, so that the resource utilization rate is improved, and the SLA requirements of more slice users are met.

The invention discloses a system and a method for high-speed processing and interaction of mass data. The system comprises a data transceiver module, a central processing module, and a data processing module. The data transceiver module is used for receiving and transmitting data. The central processing module opens n ring buffer areas to buffer received data according to the number n of GPUs (Graphics Processing Unit), copies data to the system memory after a certain amount of data is accumulated or within a certain period of time, directly maps the system memory to each GPU in advance, and sends the processing result through the data transceiver module after processing by the GPUs. The data processing module acquires corresponding data in the memory through DMA (Direct Memory Access) mapping, makes the corresponding GPUs carry out multi-thread high-concurrency processing, and returns the processing result to the central processing module. High-speed interaction of mass data between NIC (Network Interface Card) and GPU is realized. The mass network data processing ability and interaction ability of the system are improved. A more reliable technical support is provided for real-time network analysis.

Measurement system and method for determining a quality indicator for end-to-end data transfer in a wireless data network (1). A data network analysis system (10) is connected to the wireless data network (1) for measuring at least one system performance indicator using a predefined data transfer specimen. The measurement system (10) is further equipped with processing means (2) which are arranged for deriving the quality indicator for at least one other data transfer type from the at least one performance indicator. The present system and method also allow to analyse the contributions to the quality indicator for determining underlying causes for bad performance.

The invention belongs to the technical field of radar radiation source signal identification and evaluation in electronic countermeasure, and discloses a radar radiation source signal identification efficiency evaluation method and system. The method comprises the following steps: firstly, analyzing attributes with relevance characteristics under an evaluation criterion by adopting an intuitionistic fuzzy network analysis method to obtain corresponding attribute weights; Secondly, on the basis of the interval hesitant fuzzy thought, selecting an identification rate test result more reasonably,determining elements in an interval hesitant fuzzy initial decision matrix, and providing more accurate original data for a subsequent decision process; And finally, on the basis of the interval hesitant fuzzy thought, achieving evaluation of the radar radiation source signal recognition efficiency by using a cancellation and selection conversion method and combining an approximation ideal sorting method. The method can reasonably and effectively solve the problem of mutual independence of attributes, and can avoid low-efficiency assessment caused by doping of human factors and incapability of fully assessing all recognition schemes in a decision-making method.

The invention provides a limb movement recognition method based on the autonomous motor imagery electroencephalogram. Survey data show that when a person does the same movement, the brain can generatesimilar electroencephalogram signals, and therefore the feature signals can be extracted to achieve movement of the mechanical arm, and then the disabled can be assisted in moving. According to the method, the brain network is established to classify the actions, so that the consideration of the correlation among the regions of the brain is enhanced, and the working mechanism behind the EEG signals and the related rhythm characteristics thereof is displayed. A brand-new brain factor effect network analysis method based on a nonlinear partial directional coherence method is used for carrying out upper limb movement classification by utilizing a random forest, the classification accuracy is high, and corresponding actions are judged according to electroencephalogram signals, so that the mechanical arm moves, and the purpose of assisting the disabled in movement is achieved.

The invention discloses a method for implementing the integrated framework of a main distribution network, and the method comprises the steps: hardware architecture design, software architecture design, and application coordination and function implementation design. With the help of a scheduling system supporting platform of an original main network, the method employs a mode of application separation and unified display to achieve the integration of the main distribution network through the sharing of data resources, technical resources, and equipment resources. The method achieves a monitoring function of main network equipment of a conventional main network scheduling control system in a main distribution network integrated system, and also achieves the functions of distribution network data collection, distribution network SCADA, distribution network base network analysis and feeder line automatic processing of a distribution network main station system. The method does not change the hardware architecture of an original system, makes the most of the equipment resources of an original automatic system, reduces the reconstruction cost of a system, and improves the monitoring efficiency of power grid equipment.