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1099results about How to "Effective judgment" patented technology

Personnel detection and counting system based on millimeter wave radar

The invention provides a personnel detection and counting system based on a millimeter wave radar, wherein the millimeter wave radar is installed at a set position of a monitoring area, the millimeterwave radar transmits millimeter wave band radio frequency signals to the monitoring area through a multi-transmitting and multi-receiving antenna of the millimeter wave radar and receives echo signals at the same time, the echo signals are subjected to frequency mixing with the transmitted signals and then subjected to down-conversion to obtain beat intermediate frequency signals, and the beat intermediate frequency signals are sampled to obtain an echo sampling sequence. A digital signal processor reads the echo sampling sequence and performs signal processing to obtain a detected point cloud data set. An ARM processor reads the point cloud data set, meanwhile, Kalman filtering tracking is carried out on the point cloud data, continuous observation of states and the number of a pluralityof human body moving targets is achieved, the positions and the number of people in the monitoring area are obtained, and the number of people in the monitoring area is counted. The personnel detection and counting system based on the millimeter wave radar can track at least 20 targets simultaneously, provide the position and speed information of the targets, effectively judge the state of the targets and give early warning in time.
Owner:长沙莫之比智能科技有限公司

Method for detecting mutation information in multiplex amplification sequencing product of genome

The invention discloses a method for detecting mutation information in a multiplex amplification sequencing product of a genome. The method comprises steps as follows: sequencing data are subjected to quality assessment and preprocessing; a recognizable sequencing sequence is selected for sequence assembling; the recognizable sequencing sequence or a sequence obtained through assembling is compared with a reference gene sequence, and preliminary variation information is obtained; fine calibration of sequence variation is performed according to different types of conditions; a calibrated sequencing fragment is obtained; the homozygosis or heterozygosis state of a target fragment is obtained according to the type of the sequencing fragment with the highest abundance; finally, the mutation information in the multiplex amplification sequencing product of the genome is obtained. By means of the method, the amplification product can be rapidly, efficiently and accurately recognized, and the calculation resources are saved; the sequence assembling process is compatible, and the problem of reduction of the quality value of basic groups produced in the sequencing process can be effectively solved; the homozygosis/heterozygosis state of variation information can be more effectively and stably judged, and random errors introduced in the PCR (polymerase chain reaction) process and the sequencing process are eliminated.
Owner:AMOY DIAGNOSTICS CO LTD +1

Method, device and computer program product for determining an electromagnetic near-field of a field excitation source of an electrical system

A method, a device and a computer program product for determining an electromagnetic near-field of a field excitation source of an electrical system are provided, in particular for analysis and/or optimization of an antenna radiation, of a cross-talk problem, of a signal reflexion/transmission, of a stray field, of an irradiation problem or the like. The method includes defining electrical and magnetic properties of the material distribution of the system, defining at least one field excitation source, and determining the electromagnetic near-field components within at least one and in particular all partitions by solution of the Maxwell's equations of the near-field, where each near-field component of each partition can be represented by a linear position of M predetermined ansatz functions Pi orthogonal to one another with regard to a scalar product and weighted with field coefficients vi, and the spatial and/or time derivative of the near-field component can be determined as a linear position of these ansatz functions Pi weighted with derivative coefficients wi, and where each coefficient wi can be determined from a quantity of previously determined field coefficients vi and derivative coefficients wi, so that the determination effort of the near-field of the system rises in substantially linear manner to the number N of partitions in the domain under consideration and to the number M of ansatz functions Pi used in the linear position.
Owner:DASSAULT SYST DEUT GMBH

N-Gram participle model-based reverse neural network junk mail filter device

The invention relates to the technical field of text processing, in particular to an N-Gram participle model-based reverse neural network junk mail filter device. Customized word characteristic items are added to mail particles by using N-Gram technology, and judgment and filter of junk mails are implemented by combining a reverse neural network. The device is implemented by the following steps of: firstly, processing the mails by using a Markov chain and an N-Gram technique, extracting mail sample characteristics, and obtaining a sample mail word-document space by weight calculation and characteristic selection; secondly, matching a mail sample by using the customized word characteristic items to generate a customized characteristic-document space, and combining the document characteristics generated by the two methods to generate a new mail vector space; thirdly, constructing a reverse neural network model, generating characteristic vectors corresponding to network neurons according to the characteristic items of a mail training sample space, and training the network model by using the mail training sample vector space to obtain a trained mail classifier; and finally, generating a test sample vector space by the mail test sample according to the generated characteristic vectors corresponding to the network neurons, and testing the mail type judgment accuracy of the trained mail classifier. The embodiment of the invention can judge the junk mails so as to filter the junk mails.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Malicious code type detection method based on cloud mode

The invention discloses a malicious code type detection method based on a cloud mode. The method comprises the following steps that: a cloud terminal carries out processing and analysis on a malicious code family to generate an initial classification database, generates a representative feature set for each category of malicious code family in the initial classification database, an access or execution operation of a program is intercepted at a client, an only identity value of the intercepted program is calculated, whether the only identity value exists in a local database or not is determined, if not, a specific feature document of the intercepted program is extracted, the only identity value and a specific feature document of the intercepted program is uploaded to the cloud terminal by the client, whether the only identity value exists in a cloud terminal database or whether the feature document belongs to a classification is determined, a final determination result is returned to the client, and the only identity value and the final determination result are written into the cloud terminal database and a client database respectively. According to the method, the rapid expansion of a feature library can be slowed down, the upload of suspicious programs is reduced, and the killing prevention efficiency of cloud security is raised.
Owner:HUAZHONG UNIV OF SCI & TECH

CAN bus authentication method and system based on broadcasting

The invention relates to a CAN bus authentication method and system based on broadcasting. The method includes the steps that completeness verification is conducted on all ECUs, seed secret keys are distributed for a gateway and the ECUs passing the verification; the gateway generates an encryption sequence, and the encryption sequence is sent to the ECUs passing the verification through broadcasting; the gateway and the ECUs passing the verification generate identical message authentication code (MAC) tables and identical synchronous counters, wherein the initial value of the counters is zero; the sending ECU attaches the MAC corresponding to the value of the counter of the sending ECU to the data field of a sending data frame; the gateway and the receiving ECU judge whether the MAC in the data field is identical with the MAC in the MAC tables corresponding to the counters of the gateway and the receiving ECU or not; if yes, the data frame is judged to be safe, and if not, the data frame is judged to be the illegal frame; the values of the counters of the sending ECU, the gateway and the receiving ECU are added by one, and whether the values of the counters of the sending ECU, the gateway and the receiving ECU exceed the preset threshold value or not is judged; if yes, an MAC table is generated again; if not, the next frame of communication is conducted, and communication of a next data frame is conducted. According to the CAN bus authentication method and system, due to the fact that a message authentication code is added to the data frames in communication, the attack on the CAN bus can be defended.
Owner:TSINGHUA UNIV

Method for realizing full three-dimensional intelligent virtual computer room

The invention relates to a method for realizing a full three-dimensional intelligent virtual computer room, and belongs to the fields of computer graphics and virtual reality. The method comprises the following steps of: (1) simulating a full three-dimensional system structure and state; (2) monitoring and managing the running states of multiple kinds of large computer room equipment in real time; (3) performing monitoring, transmission and three-dimensional display on signals in real time based on a C / S architecture; (4) automatically laying out and wiring in a three-dimensional space system in real time; and (5) in a three-dimensional space, performing quick positioning, three-dimensional navigation and intelligent analysis on exceptional equipment. In the method, after a two-dimensional sketch map is changed into a full three-dimensional real-time intelligent layout map, according to equipment connection information updated by a server, all equipment is subjected to real-time layout and wiring at a client, the connection relationships of the multiple kinds of equipment are more clear and intuitively, the concept of layout is added, and a phenomenon that a flow chart only has a single function of the connection relationships is improved, so each equipment comprises definite real-time position information, the exceptional equipment is quickly positioned, and the navigation display and intelligent analysis in the three-dimensional space assist users to more effectively judge problems and solve problems.
Owner:SHANGHAI UNIV

Mobile station apparatus, base station apparatus, and radio link synchronization determining method

InactiveUS20110292824A1Efficient radio link synchronization determinationEffective judgmentSynchronisation arrangementError preventionEngineeringMobile station
While a mobile station apparatus is receiving a plurality of frequency bands, effective determinations of wireless link synchronization can be achieved. The mobile station apparatus measures the reception qualities of a plurality of different downlink frequency band signals (DL_CC1, DL_CC2) transmitted by one or more base station apparatuses and by the foregoing base station apparatuses. If all of the measured reception qualities are below a threshold value (Qout) (threshold value for determining downlink synchronizations), the mobile station apparatus determines that a downlink synchronization error has occurred, and then causes the downlink synchronization state to transition to an error detection part. If the mobile station apparatus successively detects the downlink synchronization error a predetermined number of times, then the mobile station apparatus causes the downlink synchronization state to transition to a synchronization protection part and simultaneously starts a downlink synchronization protection timer. If no downlink synchronization has been recovered by the expiration of the downlink synchronization protection timer, the mobile station apparatus determines that an out-of-downlink-synchronization has occurred, and then releases individually designated radio resources and thereafter starts a cell reselection.
Owner:SHARP KK

Power distribution network fault location method based on fault indicators

The invention discloses a power distribution network fault location method based on fault indicators. The method comprises several steps as follows: construction of an incidence matrix, sending of state information to a master station control center by the fault indicators, generation of a trigger vector and location of a fault section. An incidence matrix construction unit generates the incidence matrix, the fault indicators send the state information to a master station through a Zigbee wireless network, and a fault location unit generates a trigger vector, performs matrix operation on the trigger vector and the incidence matrix to acquire a fault section vector, analyzes and locates the fault section and diagnoses the fault information. Effective fault location of a power distribution network which has multiple faults and contains distributed power supplies can be realized. When the method is used for locating the faults of the power distribution network, a normalized incidence matrix is not required, and fault location of the complex power distribution network structure with multiple fault points and multiple power supply systems can be realized; the method has certain fault tolerance and is simple in judgment principle, small in calculation amount, stable, reliable, quick and accurate in fault location and low in cost.
Owner:GUANGXI UNIV +1
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