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32results about How to "Mitigate performance degradation" patented technology

Method for determining location information of user terminal UE and network side equipment

The present invention relates to the field of communications. In order to solve the problem that the determination of UE location information depends on the establishment of an RRC connection, a method for determining UE location information and configuring parameters for the UE is provided, including: determining the path loss threshold PLTH for the UE to enter the cell edge; determining The grouping threshold matched with the PLTH is sent to each UE in the cell, which is used as a path loss comparison reference when the UE initiates a competitive random access. The UE determines to select a preamble in a different group when initiating a competitive random access according to the comparison result ; During the random access process initiated by the UE, obtain the random access method selected by the UE; when the selected random access method is contention random access, obtain the preamble selected during random access; according to the selected The group to which the preamble belongs determines the location information of the UE. The invention can reduce the overhead of air interface signaling caused by blindly configuring parameters when the RRC is not established, and further improves the utilization rate of system resources.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Method and device for testing trap density and position of gate oxide layer

The invention provides a method and a device for testing trap density and position of a gate oxide layer, and relates to the technical field of quality and reliability testing of an MOS (Metal Oxide Semiconductor) device. The method comprises the following steps: S1, accessing negative voltage at a source end and a drain end, grounding at a substrate end, so that p and n nodes are forward bias; S2, after the p and n nodes are forward bias, accessing a grid direct-current scanning voltage at a grid, and scanning from negative voltage to positive voltage, so that the surface of the device becomes weak inversion state from accumulation state; measuring the substrate end during the scanning process so as to obtain substrate current; S3, establishing a first I-V curve of the substrate current and the grid direct-current scanning voltage; S4, applying a fixed voltage to the grid, repeating the steps S1 to S 3 for multiple times so as to obtain a plurality of second I-V curves; measuring the heights of bottoms of the second I-V curves so as to obtain the trap density of p and n nodes. According to the method and the device, the strap density of the p and no nodes can be measured and the positions of traps can be positioned, so that the design of the device is improved so as to reduce the traps.
Owner:PEKING UNIV

Solid 3D printing system for space component in-orbit manufacturing and repairing by using cold spraying and method

ActiveCN111962059AOvercoming difficulties that are difficult to combine effectivelyReduce burning lossAdditive manufacturing apparatusHeat inorganic powder coatingData controlData information
The invention relates to a solid 3D printing system for space component in-orbit manufacturing and repairing by using cold spraying and a method. The data information of a temperature sensor, a pressure sensor, a distance sensor and a flowmeter are all transmitted to a computer terminal, the computer terminal gives a control instruction according to the three-dimensional data, a three-dimensionalmobile platform is controlled by a three-dimensional mobile platform control chip, a matrix or a substrate moves according to the design path, and meanwhile, a valve and a heater are controlled according to the data of the temperature sensor, the pressure sensor and the flowmeter, so as to adjust the process parameters. The system and the method have the advantages that in the space environment, the problem that a melting state 3D printing technology is difficult to effectively combine under the weight loss condition is solved. In the system and method, powder has extremely high speed and accurate direction, and the kinetic energy generated by means of acceleration of gas through a Laval nozzle makes metallics completely overcome the weight loss environment in the space.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Face representation attack detection method and system based on fusion features and dictionary learning

The invention discloses a face representation attack detection method and system based on fusion features and dictionary learning. The method comprises the steps of extracting image quality features of a complete face image according to a distortion source of secondary imaging of the face image; constructing a deep convolutional network model, and extracting deep network features of the face imageblocks through a deep convolutional network; cascading the two features to generate a final fusion feature through PCA; initializing dictionary atoms by using the fusion features, and training a dictionary learning classifier based on a low-rank shared dictionary; and judging the category of the test sample based on the size of the fusion feature reconstruction residual. According to the method,face representation attack detection is carried out by combining image quality features and deep network features for the first time, information provided by a single-frame image is better utilized, and the discrimination capability of extracted features is effectively enhanced; the same mode of true and false samples is stripped through the low-rank shared dictionary for the first time, so that the attack detection accuracy is successfully improved, and the method has good generalization.
Owner:SOUTH CHINA UNIV OF TECH

Voiceprint recognition system and method based on multi-scale multi-level model

The invention relates to the technical field of voiceprint recognition, and provides a voiceprint recognition method based on a multi-scale and multi-level model in order to improve the accuracy of voiceprint recognition, comprising the following steps: step 1, acquiring voice data with speaker labels; step 2, dividing the voice data into feature segments according to different scales, wherein each division scale corresponds to a hierarchy; step 3, constructing and training a multi-scale multi-level model corresponding to the data division mode; and 4, inputting to-be-recognized voice data into the multi-scale multi-level model obtained by training in the step 3 for voiceprint recognition. The invention discloses a voiceprint recognition system based on a multi-scale and multi-level model. The voiceprint recognition system comprises a data acquisition unit, a data division unit, a model construction unit, a model training unit and a voiceprint recognition unit. By adopting the mode, the accuracy of the voiceprint recognition model is improved.
Owner:四川启睿克科技有限公司

Dynamic partitioning method, system, equipment and medium

The embodiment of the invention provides a dynamic partitioning method, system and device and a medium. The method comprises the following steps: acquiring a first partition level of a first partition; wherein the system processing resource has a hierarchical structure, the hierarchical structure comprises layers corresponding to different partition levels, and the first partition is located in a first layer in the hierarchical structure; determining working parameters of a plurality of control groups contained in the first partition; determining a second partition level according to the working parameters of the plurality of control groups; and when the second partition level is not matched with the partition level, adjusting the plurality of control groups into the partitions contained in the layer corresponding to the second partition level. When dynamic partitioning needs to be carried out, adjustment can be carried out among layers corresponding to different partition levels of the same partition branch according to the processor pressure of the partition level corresponding to the first partition. And when the cross-affinity domain adjustment demand is carried out, the control group is taken as a division unit to carry out overall migration between different partitions of the layer where the same partition level is located, so that the performance of the overall processor can be effectively improved.
Owner:ALIBABA (CHINA) CO LTD

Test method and device for gate oxide layer trap density and position

The invention provides a method and a device for testing trap density and position of a gate oxide layer, and relates to the technical field of quality and reliability testing of an MOS (Metal Oxide Semiconductor) device. The method comprises the following steps: S1, accessing negative voltage at a source end and a drain end, grounding at a substrate end, so that p and n nodes are forward bias; S2, after the p and n nodes are forward bias, accessing a grid direct-current scanning voltage at a grid, and scanning from negative voltage to positive voltage, so that the surface of the device becomes weak inversion state from accumulation state; measuring the substrate end during the scanning process so as to obtain substrate current; S3, establishing a first I-V curve of the substrate current and the grid direct-current scanning voltage; S4, applying a fixed voltage to the grid, repeating the steps S1 to S 3 for multiple times so as to obtain a plurality of second I-V curves; measuring the heights of bottoms of the second I-V curves so as to obtain the trap density of p and n nodes. According to the method and the device, the strap density of the p and no nodes can be measured and the positions of traps can be positioned, so that the design of the device is improved so as to reduce the traps.
Owner:PEKING UNIV

Semi-supervised medical image classification method based on security comparison self-integration framework

The invention provides a semi-supervised medical image classification method based on a safety comparison self-integration framework, and the method comprises the following steps: firstly, selecting a batch of data composed of labeled and unlabeled data, adding data disturbance to the data, repeating the processing twice to obtain two groups of data, and inputting the two groups of data into a student network and a teacher network respectively; secondly, designing a weighting function, updating the weighting function by utilizing supervised loss, and automatically distributing a weight for each piece of unmarked data; the weight parameters and the probability output of the two networks are combined, and the consistency loss of reliable perception is established; further, normalized low-dimensional representations output by the two networks are obtained by combining weight parameters and utilizing a projection network, and comparison loss of reliable perception is established; and finally, respectively carrying out weighted summation on all the loss functions to form a final loss function, and alternately updating network parameters and weighting function parameters. According to the method provided by the invention, reliable data level and data structure level information can be learned at the same time, and the robustness and generalization of the model are improved.
Owner:NANJING UNIV OF TECH

Method for determining location information of user terminal UE and network side equipment

The present invention relates to the field of communications. In order to solve the problem that the determination of UE location information depends on the establishment of an RRC connection, a method for determining UE location information and configuring parameters for the UE is provided, including: determining the path loss threshold PLTH for the UE to enter the cell edge; determining The grouping threshold matched with the PLTH is sent to each UE in the cell, which is used as a path loss comparison reference when the UE initiates a competitive random access. The UE determines to select a preamble in a different group when initiating a competitive random access according to the comparison result ; During the random access process initiated by the UE, obtain the random access method selected by the UE; when the selected random access method is contention random access, obtain the preamble selected during random access; according to the selected The group to which the preamble belongs determines the location information of the UE. The invention can reduce the overhead of air interface signaling caused by blindly configuring parameters when the RRC is not established, and further improves the utilization rate of system resources.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Browser front-end architecture system capable of being developed separately from rear-end architecture

The invention provides a browser front-end architecture system capable of being developed separately from a rear-end architecture. The browser front-end architecture system comprises an access layer,an HTML single-page application module, a view module, a webpack module packer, a control module and a model layer. The method and the device are used for solving the problems that each page of an existing browser is time-consuming in requesting static resources, variable conflicts occur when js files are introduced, DOM element rendering is slow and performance is poor when the page is locally refreshed, and have the characteristic of improving the performance of a front-end architecture system.
Owner:北京三维天地科技股份有限公司

Manganese zinc ferrite magnetic core with high pressure bearing performance

The invention relates to the technical field of manganese zinc ferrite magnetic core manufacturing, in particular to a high-pressure-bearing manganese zinc ferrite magnetic core. The method mainly aims at solving the problems that due to the fact that the particle size difference is too large, gaps are formed in internal connection, the internal structure of the magnetic core is unstable, the pressure bearing degree of the magnetic core is affected, and due to the fact that the temperature of a setter plate is too high in the sintering process, the setter plate and zinc in manganese-zinc ferrite generate a replacement reaction, and the use performance of the magnetic core is reduced. According to the technical scheme, the composite material comprises the following raw materials in parts by mass: 45-60 mol of iron oxide, 12-18 mol of zinc oxide, 23-29 mol of manganese oxide, 2-8 mol of cobalt oxide, 1.8-4.8 mol of magnesium oxide, 16-19 mol of silicon oxide and 3-12 mol of calcium oxide. The raw materials are easy to obtain, preparation of the magnetic core is controlled from the raw materials, the problem that the internal structure of the magnetic core has a connection trend is solved, the tightness of the internal structure of the magnetic core is improved, the cushion layer is laid in the sintering process, the problem that the performance is indeed due to sintering is solved, the conductive stability is ensured, and the method is suitable for application and popularization.
Owner:ZHONGDE ELECTRONICS
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