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57results about How to "Memory" patented technology

Large-scale MIMO time-varying channel state information compression feedback and reconstruction method

The invention discloses a large-scale MIMO time-varying channel state information compression feedback and reconstruction method. The method comprises the steps that a channel matrix sequence is acquired, T channel matrixes are subjected to DFT separately, and a channel matrix sequence which is sparse in the angle delay domain is obtained; a channel feedback and reconstruction model CsiNet-LSTM isconstructed, the channel matrix sequence is input to a coder, and codewords are output; the codewords are sequentially input to a decoder, and a reconstructed channel matrix sequence is output; the channel feedback and reconstruction model is trained to gradually approximate to the channel matrix sequence to obtain model parameters; each channel matrix in the output reconstructed channel matrix sequence is subjected to two-dimensional inverse DFT, and a reconstruction value of an original space-frequency domain matrix sequence is obtained through recovery; and channel state information to befed back and reconstructed is input to the model, and a reconstruction value is output. According to the method, the feedback overhead of large-scale MIMO channel information can be reduced, the reconstruction precision is improved, and the excellent robustness is particularly achieved on decrease of the compression ratio.
Owner:SOUTHEAST UNIV

Method for producing electrostatic resistance and ray-proof worsted cloth

The invention relates to method for manufacturing antistatic ray-proof worsted fabric, which successively comprises the following steps: firstly, carrying out the cleaning treatment and the sizing and film mulching treatment to rust-less steel fiber, secondly, blending by selecting treated rust-less steel fiber with wool, polyester fiber, bamboo fiber, tenel, modal fiber or spun silk, manufacturing mixed sliver with homogeneous mix, thirdly, spinning the mixed sliver and obtaining the worsted spinning yarn, fourthly, warping, weaving and obtaining the grey fabric, fifthly, carrying out birth repairing, dyeing and finishing and post-processing to the grey fabric, namely obtaining the antistatic ray-proof worsted fabric, wherein the materials feeding proportion by weight of the wool, the polyester fiber, the bamboo fiber, the tenel, the modal fiber, the spun silk, viscose or cashmere are respectively that the rust-less fiber 15-45 parts, the wool 45-75 parts, the polyester fiber 5-50 parts, the bamboo fiber, the tenel, the modal fiber, the spun silk, the viscose or the cashmere 5-20 parts. The method of the invention selectes length and fineness of the rust-less fiber and carries out the prophase film mulching treatment to the fiber, which enables the performances of the fiber is suitable for the requirements of the worsted process and enables the fiber to achieve the goal of being applied at high proportion.
Owner:山东希努尔男装有限公司

Continuously reinforced plastic heat-preserving composite pipeline used for oil field ground and its manufacturing technique

The present invention discloses a continuous reinforced plastic composite pipe and the production technique for buried heat insulation of oil field; the continuous reinforced plastic composite pipe consists of an anticorrosive coating, a reinforced layer and a coating layer; crosslinked polyethylene foamed material is continuously rolled on the continuous reinforced plastic composite pipe to form a continuous insulating course, and fluid sealant layers are respectively coated between the coating layer and the insulating layer, the insulating layer and the protective layer. The reinforced layer is weaved by metal steel wires; the anticorrosive coating and the coating layer are made of crosslinked polyethylene material; the protective layer is made of polyethylene; the insulating course is made of crosslinked polyethylene foam. The pipe of the present invention is a long-distance flexible continuous pipe; the insulating course is made of crosslinked polyethylene flexible material; the continuous reinforced plastic composite pipe has good memory, rebound resilience and concentricity inside and outside the pipeline and ensures that the continuous heat insulation pipeline prevents being squashed after being coiled and buried; thereby the thickness of the insulating course is consistent and achieving better heat insulation effect. The pipeline paved by the invention, even if the local part is damaged, water can be effectively prevented to seep into the insulating course in order to ensure the heat insulation effect.
Owner:长春高祥特种管道有限公司

Overdue monitoring method for optimizing recurrent neural network based on ant colony algorithm

The invention discloses an overdue monitoring method for optimizing a recurrent neural network based on an ant colony algorithm, and the method comprises the following steps: firstly, selecting a modeling sample, and collecting credit data of the sample, and labelling the performance data of the sample; preprocessing the collected credit data, and randomly segmenting the modeling sample into a training set and a test set; determining a recurrent neural network topology structure and initializing network parameters according to the training set features, and establishing a recurrent neural network model; pre-training the weight and bias in the recurrent neural network by using an ant colony algorithm, and training the recurrent neural network by using a gradient descent algorithm; inputting a test set sample to the trained recurrent neural network for prediction comparison and evaluation. According to the method, the optimal weight and bias of the recurrent neural network are determined by using the ant colony algorithm, the convergence rate of the neural network is increased, the accuracy of the prediction model is improved, and the requirement of real-time detection of Internet financial fraud behaviors can be met.
Owner:百维金科(上海)信息科技有限公司

Dynamic enhanced magnetic resonance imaging processing method and system, storage medium and terminal

The invention belongs to the technical field of medical image processing and computer-aided diagnosis, and discloses a dynamic enhanced magnetic resonance imaging processing method and system, a storage medium and a terminal, and the method comprises the steps: carrying out the full-automatic segmentation and processing of a primary tumor region in an obtained breast cancer DCE-MRI multi-stage image; carrying out mask processing on the segmented result, and taking the geometric center of the obtained maximum lump as a criterion to draw regions of interest of three scales; meanwhile, sending the multi-stage region-of-interest images under three scales into three connection structures combining a convolutional neural network and a long-term and short-term memory network for feature extraction and fusion; and sending the multi-stage fusion features obtained under the three scales into a soft aggregation model for aggregation of the overall features to obtain prediction results of different tasks. According to the method, the limitation of a shallow architecture is overcome, and the prediction precision is greatly improved; and perfect preoperative reference information can be visuallyprovided for operative treatment of breast cancer patients.
Owner:NORTHWEST UNIV

Biconical vena cava filter system for temporary use

The invention discloses a biconical vena cava filter system for temporary use. A filter main body includes three parts, namely a filtering portion, a fixing portion and tail fibers, wherein the filtering portion is represented as a conical spring structure; the fixing portion is a conical spring structure; and the filtering portion and the fixing portion follow smooth connection by virtue of a memory alloy wire. The filter main body is formed by implementing heat treatment setting on a memory alloy wire on a special mold; a round ball is fixed to a circle of spring, which has the largest diameter, in conical springs of the filtering portion and a round ball is fixed to a circle of spring, which has the largest diameter, in conical springs of the fixing portion. The filter (the filter system) further comprises a threaded connecting component and an extension wire. With the adoption of a biconical structure, the filter can achieve smooth release and recovery, and contact points of the filter with a vascular wall are reduced; the filter, which is fixedly located within the inferior vena cava in a double-layer and multi-spherical-point mode, can prevent injury of blood vessels as well as hyperplasia and climbing of endangium; and the filter, even being implanted for a long time, can be smoothly withdrawn.
Owner:北京有卓正联医疗科技有限公司

Intelligent fuse

The invention discloses an intelligent fuse. The intelligent fuse comprises two electrodes, memory metal and a shell; the memory metal is spring-shaped, wherein one end of the memory metal is fixed onan electrode of the intelligent fuse in the shell, and the other end of the memory metal is not fixed in the shell and is in contact with the electrode at the other end of the shell; the temperatureof a circuit component can be directly transmitted to the memory metal spring through the electrode when an electric appliance works. After the technical scheme is adopted, when the intelligent fuse is electrified to work, the high temperature is transmitted to a memory metal spring through the electrode once the heat accumulation temperature generated by a resistor of an electrical and electronicelement reaches the memory metal deformation temperature, and the electrode in contact with the deformation end of the memory metal spring is disconnected with a power supply. The disconnected intelligent fuse stops electrifying an electric appliance circuit, and the temperature of the components of the electric appliance circuit begins to drop. When the temperature is reduced to the normal temperature, the intelligent fuse resumes working. Components in an electric appliance circuit are ensured to always work in a constant temperature state lower than memory metal metamorphosis temperature,thereby avoiding the factors of fire and explosion caused by overload of current of the electric appliance circuit and spontaneous combustion of heat accumulation temperature generated by resistance of internal circuit components higher than critical points of the circuit components.
Owner:王淯

Fishery habitat water quality evaluation method and system

The invention discloses a fishery habitat water quality evaluation method which comprises the following steps: constructing a water quality prior probability table, a copepod density level table and acopepod density conditional probability table of an evaluation object according to historical water quality monitoring data and historical copepod density monitoring data of the evaluation object; collecting the current copepod density of the evaluation object, and constructing a density set; searching a copepod density grade table and a copepod density conditional probability table, and obtaining a copepod density conditional probability corresponding to each copepod density grade in the density set; substituting the copepod density conditional probability and the water quality prior probability into a Bayesian inference model, sequentially calculating the water quality posterior probability corresponding to each copepod density in the density set, and taking the water quality posteriorprobability corresponding to the last copepod density as an evaluation result. The invention further discloses a corresponding system. Only the copepod density is collected, the water quality evaluation result can be rapidly obtained based on the copepod density, and multiple physicochemical indexes are not needed.
Owner:HOHAI UNIV

A water removing device for a rear-view mirror of an automobile

The invention provides a water removing device for a rear-view mirror of an automobile, which relates to the automobile field. The device includes a shell, and the inside of the shell is hollow. The inner wall of the shell is fixedly connected with the mirror surface, the right windward surface of the shell is provided with an air inlet, the outer surface of the shell is arranged on the right sideof the mirror surface with an air outlet, the inner wall of the shell is arranged on the left side of the air inlet and is fixedly connected with the wind hood, and the inside of the shell is provided with a wind driving device. According to the water removing device, the magnetic pole of the permanent magnet block 1 is opposite to the magnetic pole of the side close to the permanent magnet block2 so that the permanent magnet block 1 and the permanent magnet block 2 can be magnetically attracted by each other, and the rubber wiper bar arranged on the left side of the bar-shaped block can bestuck on the reflector surface through the magnetic force between the permanent magnet block 1 and the permanent magnet block 2, thereby effectively preventing the problem of dropping the wiper devicein the running process of the vehicle, and facilitating the wiping operation of the wiper device.
Owner:张孟齐

Fabric for weaving sports socks

The invention discloses a fabric for weaving sports socks. The fabric comprises a skin-friendly fabric layer and a surface layer, wherein the skin-friendly fabric layer and the surface layer are integrally sewn on a fabric surface through elastic contraction threads, the skin-friendly fabric layer comprises a skin-friendly layer and a mesh-like heat dissipation fabric layer, dot-matrix heat dissipation holes are formed in the positions, corresponding to foot arches, of the skin-friendly layer, the mesh-like heat dissipation fabric layer is formed on the inner side of the skin-friendly fabric layer, and is formed by blending 65-80% by mass of high-elasticity fibers and the balance of CoolMax fibers, the mesh-like heat dissipation fabric layer is formed into a grid structure in a weaving process so as to separate a gap structure layer between the skin-friendly layer and the surface layer through the grid structure, the surface layer is a composite fabric layer, a sweat-permeable elasticfabric layer and a pure cotton fabric layer are sequentially arranged from the side of the skin-friendly fabric layer to the outside, and dot-matrix heat dissipation holes are formed in the pure cotton fabric layer and correspond to foot arches. According to the invention, the fabric characteristics of gas permeation and high elasticity, has good moisture absorption and quick-drying performance after sweating, and improves the exercise comfort and the protection effect.
Owner:湖南尚珂伊针纺有限公司

Anti-explosion rechargeable battery

The invention discloses an anti-explosion rechargeable battery which is prepared from positive and negative electrodes, memory metal, an accumulation medium and a shell, wherein the memory metal is ofa strip shape, with one end fixed on the positive or negative electrode of the battery, and the other end is free; the temperature of the accumulation medium can be directly transferred to the memorymetal strip through the electrode. In the technical scheme, when the anti-explosion rechargeable battery is charged and works, once the heat of the accumulation medium inside approaches the criticalpoint temperature for deformation combustion, the high temperature is transferred to the memory metal strip through the electrode, the contact between the memory metal strip and corresponding electrode of electrical application or charging device is cut while the circuit with the electrodes of corresponding charging device and electrical appliance is opened. The open-circuit anti-explosion rechargeable battery stops the charging and discharging work on the electrical appliance and the charging device, and the temperature of the accumulation medium starts to drop. When the temperature is reduced to normal temperature, the anti-explosion rechargeable battery continues working. The accumulation medium in the anti-explosion rechargeable battery is ensured to be always kept in a safe and normaltemperature state lower than the critical point, thus the factors leading to fire and explosion caused by long-time overload charging and discharging work of the anti-explosion rechargeable battery and excessively high temperature of the accumulation medium inside over the critical point are avoided.
Owner:王淯
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