Long term evolution-based multimedia on demand method, system and mobile terminal

The invention discloses a long term evolution (LTE)-based multimedia on demand method, which comprises that: a mobile terminal logs in a multimedia on demand server, and transmits a schedule query request to the multimedia on demand server, and the multimedia on demand server returns a schedule list; the mobile terminal selects required multimedia files from the schedule list and stores related information of the multimedia files; and the mobile terminal downloads the multimedia files from the multimedia on demand server and plays the multimedia files according to the schedules corresponding to the multimedia files. The invention also discloses an LTE-based multimedia on demand system and a mobile terminal. The method, the system and the mobile terminal can transmit the multimedia files in a wireless network environment so as to support the user on demand function.

User interest based Web information push service system

A user interest based Web information push service system comprises a plurality of internet of things terminals, a plurality of mobile terminals, a cloud server and an information publish terminal; the functions of the internet of things terminals are obtaining user interests; the plurality of mobile terminals are used for transmitting obtained user information and geographic position information of the internet of things terminals to the cloud server; the cloud server analyzes interest characteristics and evaluates push content relevancy feedback content according to the transmitted user information; the information publish terminal push analyzed personalized information.

Integrated analysis equipment for detecting oil content and dew point of compressed air

The invention relates to the technical field of compressed air quality detection, and particularly discloses compressed air oil content and dew point detection integrated analysis equipment which comprises an air compression pipeline, a first stop valve, a second stop valve, a water absorption filter, an oil absorption filter, a first electric control valve, a second electric control valve and a measurement and control assembly. The first stop valve is communicated with the air compression pipeline, the first electric control valve is communicated with the first stop valve, the measurement and control assembly is communicated with the first electric control valve, the water absorption filter is communicated with the measurement and control assembly, the oil absorption filter is communicated with the water absorption filter, and the second electric control valve is communicated with the oil absorption filter and located at one end of the oil absorption filter. According to the arrangement ...

An identification method and device for point-to-point media stream

The embodiment of the invention provides a point-to-point media stream determination method and a device which are capable of effectively identifying a point-to-point media stream to control the flow amount of a communication host computer of the point-to-point media stream and make the network system operate stably. The method comprises the collection of the media steam, wherein, the media stream comprises a data package; the point-to-point media stream is determined in accordance with the protocol and data package characteristics adopted by the media stream data package. The embodiment of the invention which identifies the PMS by the data package characteristics is of simple method and can meet the requirements in different aspects according to the needs, such as the flow amount controlto the PMS communication host computer to improve the operation efficiency of the network system; or, the implement of the service guarantee to a PMS service signed user and the implement of the 'best effort ...

Portable turbine dynamic rotating speed measuring device and method

The invention provides a portable turbine dynamic rotating speed measuring device and method. The device comprises a rotating speed pulse signal measuring circuit and a frequency signal measuring circuit, a rotating speed pulse signal is processed by a first amplifying insulation blocking unit and then enters into a first singlechip and a frequency voltage conversion unit, the pulse signal processed by the first singlechip is displayed and is transmitted to a computer, and the pulse signal processed by the frequency voltage conversion unit enters into a high-pass filter to be processed, and finally a rotating speed voltage is output; and a frequency signal is processed by a second amplifying insulation blocking unit and then enters into a second singlechip, the processed frequency signal processed by the second singlechip enters into an A/D converter and a frequency LED (Light-Emitting Diode) display nixie tube, the frequency signal processed by the second singlechip is converted into a ...

Method and device for measuring service life of diesel engine based on cylinder liner wear

The invention discloses a method and device for measuring the service life of a diesel engine based on cylinder liner wear. The method for measuring the service life of the diesel engine based on cylinder liner wear includes the following steps that the relational expression of surface roughness and stable loads, the speed of a test piece piston ring and the number of friction times of the test piece piston ring and a test piece cylinder liner and the relational expression of surface roughness of the test piece cylinder liner and coefficients of wear of the test piece cylinder liner are acquired; the relational expression of the maximum wear depth of the cylinder liner of the diesel engine, the rotating speed and fuel consumption per hour of the diesel engine, atmospheric pressure and environmental temperature is acquired; the maximum wear depth of the cylinder liner of the vehicle-mounted diesel engine is calculated; the service life of the vehicle-mounted diesel engine is confirmed based ...

Absorption type refrigeration and power combined circulating system

The invention relates to a low temperature heat energy recycling technology and discloses a combined circulation system of absorption refrigeration and power. The combined circulation system comprisesheat source, a circulating device and a circulating working medium. The combined circulation system is characterized in that the circulating device comprises a rectifier, a condenser and a steam generator which are connected with the rectifier. A superheater, a turbine, an absorber, a circulating pump and a forewarmer are in turn connected with the superheater of the steam generator. A throttle valve and an evaporator are in turn connected wit the condenser. A generator is connected with the turbine in the same shaft. The power is exported by the generator. The forewarmer is connected with the rectifier. The heat source in turn passes through the super heater, the steam generator and the forewarmer. The evaporator is connected with the absorber, and at the same time the cold energy is exported ...

Mixed structure invasion detection system rule base establishing method

Disclosed is a rule base creation method of a hybrid architecture intrusion detection system, which proposes to create a data packet identification mechanism; the mechanism aims to identity the type of the data packet and start the corresponding rule base (IPv4 or IPv6) for feature identification; the identification method of the mechanism is based on the data packet feature under the hybrid architecture environment of IPv4 and IPv6 and analyzes the feature of the corresponding data packet under different network communication modes and different situations; the method of constructing the IPv4 feature base and the IPv6 feature base and the aspects need to be considered are basically the same to that of the traditional method; the novel behavior features brought by the characteristics of the IPv6 data packet and the IPv6 features need to be considered greatly in the invention. As for the organization form of the rules, the rule base creation method of the hybrid architecture intrusion detection ...

Unified authentication method based on distributed file system

The invention discloses a unified authentication method based on a distributed file system and solves the unified right management problem of multi-service domain under the distributed file system; the unified authentication method based on the distributed file system is divided into three layers: a unified authentication module, a file resource, user visiting file system. The user name and password are input at the client and mapped to the unified authentication module of the name node through the unified interface for realizing right authentication while the user visits the distributed file system. The authentication module firstly searches whether the user exists, if not existing, returning; if the user searching comparison is successful, returning one certificate, the user can carry the certificate for visiting the file resource among different service systems so long as the access process is not finished. The unified right management of multi-service domain under the distributed file ...

Fragmentation and reassembly method based on network protocol version six

The invention relates to a segmentation and reset method based on the Version 6 of a network protocol, which is a method that can improve the transmission performance of the new generation Internet protocol (IPV6) by improving the segmentation and reset efficiency, the specific method includes the following steps: (1) a segmentation and reset system receives a data segment transmitted from a network; (2) the data segment received in step (1) is sent to a segment detection module; (3) the data segment that is not the currently-processed data segment distinguished in step (2) is transmitted to a segmentation tree module for cache, and the segmentation detection module is invoked to guarantee that the segmentation on the branch of the segmentation tree is legal during the branch cache process; 4) the segments passing the authentication in step (2) are transmitted to a segment classification module, and the segments are classified into four types and imprinted with type marks; (5) an advanced ...

Rear radiator and water-gas separator combination structure of compressor

The invention relates to a combination structure of the rear cooler and the moisture separator of a compressor. The rear cooler and the moisture separator is the combination structure with one arranged on the upper and one arranged on the lower. The rear cooler is arranged on the moisture separator. The top part of the rear cooler is equipped with an air inlet pipe. The lateral part of the rear cooler is equipped with a water inlet pipe and a water outlet pipe. The lateral of the moisture separator is equipped with an air discharging pipe. A pollution discharging orifice is arranged on the bottom of the moisture separator. The rear cooler and the moisture separator are integrated by the combination structure of the rear cooler and the moisture separator of the compressor which has the advantages that: 1. due to the omission of an air path which is connected between the rear cooler and the moisture separator, the pipeline of the compressor is more concise; 2. the leak points of the pipeline ...

Road curve vehicle meeting warning device

The invention belongs to the field of road traffic, particularly relates to a road curve vehicle meeting warning device, and provides the following scheme aiming at the danger that an opposite vehicle is easy to collide due to steering adjustment and the like in the driving process of an existing vehicle, and particularly the risk that a large transport vehicle is easy to sideslip when passing through a curve. A rain baffle is fixedly installed at the top of the displayer, a controller, a speed measuring sensor, an alarm and an alarm lamp are fixedly installed in the displayer, the controller is electrically connected with the alarm, the speed measuring sensor and the alarm lamp, and display screen bodies are arranged on the front side and the rear side of the displayer. Good traffic warning and guiding effects can be provided, a vehicle can smoothly pass through a turning road section, the safety can be greatly improved, the problem of sideslip caused by deviation from a route can be avoided ...

Ecological concrete prefabricated part for soft-shelled turtle breeding and installation method of ecological concrete prefabricated part

The ecological concrete prefabricated part comprises a support and a concrete prefabricated cover plate, the support comprises a horizontally-arranged bottom plate and a supporting plate, the included angle between the bottom plate and the supporting plate ranges from 25 degrees to 50 degrees, and the lower end of the supporting plate is provided with an outwards-turned right-angle folded edge; the concrete prefabricated cover plate is placed on the supporting plate, an included angle between the concrete prefabricated cover plate and the bottom plate forms an inhabitation space for soft-shelled turtles to move, and a notch for the soft-shelled turtles to climb into the inhabitation space is formed in the lower portion of the concrete prefabricated cover plate; the bank slope can be reinforced, the cost is low, more inhabiting space and a closed, quiet and comfortable inhabiting environment can be provided for the soft-shelled turtles, breeding and inhabiting of the soft-shelled turtles ...

Mobile terminal and filtering method of short messages thereof

The invention discloses a mobile terminal and a filtering method of short messages thereof. A support vector machine algorithm is used for sorting short messages, and simultaneously, a self-feedback function is provided; simple address list or black list matching operation is carried out based on the sorted short messages; and wrongly sorted short messages are fed back and learned to update a support vector library. Thus, the support vector library is continuously perfected, and the filtering capacity is continuously adjusted automatically and enhanced. Because the support vector machine algorithm and the address list or black list matching operation are combined for use, the scheme of the invention can aim at the short messages in various formats and especially can filter the short messages which do not belong to a black list or an address list.

Device facilitating disassembly and assembly of coal feeder end cover

The utility model discloses a device convenient for coal feeder end cover disassembly and assembly, which comprises an end cover and a coal feeder body, the end cover is fixedly connected with the coal feeder body through a bolt, the upper part of the surface of the end cover is provided with a through hole, and a vertical rod is welded on the surface of one side of the coal feeder body through afixing piece. According to the utility model, the structure is simple, hooks and through holes are adopted; a through hole is formed in the middle of the end cover surface; end cover dismounting process, a connecting rod on the top surface of the hook penetrates through the ram; then the hook penetrates through the through hole; then the hook is fixed below the ram through the connection of the nut and the external thread; after the bolt is dismounted, the bolt is dismounted; the end cover is hooked by the hook; the end cover cannot topple over to injure people; the coal feeder is safer to disassemble ...

Web content information filtering method based on cloud computing

The invention discloses a web content information filtering method based on cloud computing. The method comprises a local DNS (domain name server) cooperating with a target DNS to obtain an IP address corresponding to a web address which a terminal user requests to access, the local DNS sending the IP address to a cloud computing filtering system, the cloud computing filtering system giving a feedback of an interception or response instruction, if the local DNS receives the interception instruction, the IP address is not sending to the terminal user, and if the local DNS receives the response instruction, sending the IP address to the terminal user. The filtering method realizes filtering through a cloud computing platform, work including data detection recombination and the like at a client is unnecessary, the filtering precision and efficiency are higher, at the same time content filtering unified disposition and regulation and control are facilitated, and secure and healthy network environment ...

Mobile phone speed dialing method based on fingerprint recognition

The invention discloses a mobile phone speed dialing method based on fingerprint recognition which is a simple and direct dialing method put forward aiming at the situation of the complex operation of smart mobile phones nowadays, and the quick operation of the mobile phone dialing is completed through the combination of a fingerprint recognition technology and mobile phone operations. The method is as follows: gathering human body fingerprint information through a smart touch mobile phone screen with a function of fingerprint recognition or a single fingerprint identifier; setting the corresponding relationship between a contact person and the corresponding fingerprint by a user, wherein the setting process comprises fingerprint recognition, fingerprint information storage, and the like; changing the mapping relationship between the fingerprint and the number of the corresponding contact person after confirming the identity through other identity authentication mechanisms by the user; ...

Fragmentation and reassembly method based on network protocol version six

The invention relates to a segmentation and reset method based on the Version 6 of a network protocol, which is a method that can improve the transmission performance of the new generation Internet protocol (IPV6) by improving the segmentation and reset efficiency, the specific method includes the following steps: (1) a segmentation and reset system receives a data segment transmitted from a network; (2) the data segment received in step (1) is sent to a segment detection module; (3) the data segment that is not the currently-processed data segment distinguished in step (2) is transmitted to a segmentation tree module for cache, and the segmentation detection module is invoked to guarantee that the segmentation on the branch of the segmentation tree is legal during the branch cache process; 4) the segments passing the authentication in step (2) are transmitted to a segment classification module, and the segments are classified into four types and imprinted with type marks; (5) an advanced ...

Negative feedback-based user antipathy label determination method

The invention discloses a negative feedback-based user antipathy label determination method, which comprises the following steps of: acquiring data information, and setting a sliding time window according to the data information; obtaining negative feedback behavior associated video data of the user in the time window, and counting a single label frequency and a total label frequency; calculating a user video antisense weight, and obtaining a user label antisense weight; and calculating a user label dissensitivity degree value, and determining a final user dissensitivity label. The method has the characteristic of high real-time performance, and can accurately express the recent negative feedback direction of the user and reduce the proportion of recommending the anti-dizzy video to the user by continuously calculating the recent anti-dizzy intention of the user through a dynamic time window.

SVM (support vector machine) based mobile terminal application classification system and method

The invention discloses an SVM (support vector machine) based mobile terminal application classification system and method. The system comprises a terminal application consumption data acquisition module, a data type index module and an SVM based classification module, wherein the terminal application consumption data acquisition module is used for detecting the quantity of various resources consumed in the specific environment, the resources comprise electric quantity, flow, permission open condition, test time delay, packet loss probability, delayed shaking and the like which are used as basis of application classification; the data type index module provides an index type base so as to provide a basis for processing of previous acquired data, is also an important part connecting the data acquisition module and the classification module, and provides weighted values for the acquired data according to the classification degree; and the SVM based classification module classifies processed ...

Recognition method of mobile phone viruses, device and system

The embodiment of the invention discloses a recognition method of mobile phone viruses, a device and a system. The method comprises the following steps: a software message is received, when the software message comprises a first pre-estimated value, a second pre-estimated value is generated according to the size of the capacity of other messages in the software message except the first pre-estimated value, and the first pre-estimated value is generated by a sending terminal according to the size of the capacity of the generated sending message; when the absolute value of the difference value of the first pre-estimated value and the second pre-estimated value is not in the preset effective definitional domain, the software message is recognized to be bound by the mobile phone viruses. The embodiment of the invention effectively prevents the sending message from being bound by the mobile phone viruses maliciously in the network transmission process, can effectively search and kill most of ...

Method for supervising online class in real time or non real time based on peer-to-peer agents

The invention relates to a method for supervising online class in real time or non real time, which is used in network computing environment based on Internet or Intranet, and realized by adopting peer-to-peer agents, and aims at solving the problems that classroom teaching in network environment can not ensure the quality and effect of teaching due to looseness, uncertainty and resistance to control, and the teaching result is not satisfactory. The method fuses agent technology and peer-to-peer computing technology together and applies the agent technology and the peer-to-peer computing technology to the real-time and non-real-time supervising system of an online class. The online class supervising system is divided into two parts: a computer for teachers and computers for students, wherein the computer for teachers is taken as an online class gathering point, and is resided with peer-to-peer agents of the gathering point for a long time so as to be in charge of establishing the peer-to-peer ...

Felt strip and processing technique thereof

The invention discloses a felt strip and a processing technique thereof. The felt strip body is provided with the following three layers: upper and lower layers are wool layers and the intermediate layer is made of cotton wool; and the weight ratio of the upper, intermediate and lower layers is 1 to 4 to 1. The felt strip has the advantages of rational structure, and high moisture resistance, heat preservation and air permeability. The invention also provides the processing technique for the felt strip, which comprises the following steps of: making felt, rolling, rubbing edges, ironing the felt, washing and starching, dehydrating, drying and the like. The felt strip and the processing technique have the advantages of low production cost and convenient processing by using the cotton wool, which is formed by newly fluffing and ginning waste cotton-padded covering, as the intermediate layer of the felt strip, so that waste materials are recycled and the felt strip is particularly suitable ...

Semiconductor device manufacturing method

The invention discloses a semiconductor device manufacturing method, which comprises the following steps: (A) a pin unit positioned by a frame is provided, wherein the pin unit comprises a first pin and a second pin arranged at an interval, and the second pin is provided with a limiting part near the first pin; (B) a semiconductor chip is provided, and the semiconductor chip is arranged on the first pin and is electrically connected; (C) a conductive sheet is provided and electrically connected with the second pin and the semiconductor chip, and the conductive sheet is provided with a limited part which can be clamped and limited by the limiting part of the second pin; (D) a glue sealing processing is carried out; and (E) the pin unit and the frame are separated. The conductive sheet is clamped by the limiting part of the second pin, the conductive sheet can be prevented from sliding and deviating from the preset mounting position when the conductive sheet is mounted, and the packaging ...

Improvement method based on LDS node sleeping strategy

The invention belongs to the energy conservation field of wireless sensor networks, and provides an improvement method based on an LDS node sleeping strategy. A conception of data activeness h is introduced, the data activeness is used as a factor to influence the node sleeping probability, and the greater the data activeness is, the smaller the sleeping probability of the node is. The invention designs a method capable of realizing the requirement of energy conservation and prolonging network lifetime. Under the circumstance of guaranteeing the energy conservation of the wireless sensor network, the effictiveness of data measurement in the sensor network is improved while an LDS algorithm is improved.

Fine-grained cloud platform security access control method based on user identity capacity

The invention relates to a fine-grained cloud platform security access control method based on user identity capacity, and belongs to the technical field of resource access. According to the method, a file uploaded by a data owner is divided into control fields and ciphertext fields, the ciphertext fields are stored in cloud physical nodes, the control fields are stored by a cloud server, a cloud server agent conducts intervention control, network resources are distributed reasonably, burden of the data owner is relieved, a control list needs to be partially updated in the access permission redirection process, each globally unique document number identifier is associated with a globally unique user identity identifier, operation permissions of users are bounded so as to achieve fine-grained access control, an uploaded identity-permission-ciphertext list is encrypted, the confidentiality and the integrity of user information and file information are guaranteed, and information leakage risks ...

Information processing method and system for extended 6LoWPAN (IPv6 over Low-Power Wireless Personal Area Networks) domain

The invention discloses an information processing method and system for an extended 6LoWPAN (IPv6 over Low-Power Wireless Personal Area Networks) domain. The information processing method comprises triggering a multi-source synchronization mechanism when the context information is updated in the extended 6LoWPAN domain to enable the synchronization of the context value information and the time to be achieved between a plurality of border routers and distributing the updated context information in the extended 6LoWPAN domain through the at least one border router. According to the information processing method and system for the extended 6LoWPAN domain, the information processing method is performed according to a neighbor discovery optimization standard draft which is proposed by an IETF (Internet Engineering Task Force) organization completely and accordingly the feasibility is strong, the applicability is wide, and the problem that the consistency of the context information release in ...

A method and system for preventing from network attacks

The utility model relates to a network attack defending method, comprising a filter, a router, and at least two servers, a first link control module, a second link control module and a front-end control module. The two servers comprise a duty server participating in the network operation and a standby server of the duty server. The front-end control module is used to inform the first link control module to replace the duty server with the standby server, and inform the filter to filter the attacking flow when the resource consumption of the duty server measured by the second link control module exceeds the set value.

Peer-to-peer network flow identification method based on support vector machine and deep packet inspection

The invention relates to a peer-to-peer network flow identification method based on support vector machine and deep packet inspection which is used for monitoring the peer-to-peer network flow. Under the support of the limited characteristic library of application layer protocol, the method can identify unknown types of peer-to-peer network flow through machine learning and reach higher recognition rate. The method combines the advantages of deep packet inspection technology and support vector machine technology; and during identification, the identification method based on deep packet inspection technology automatically collects sample data and periodically performs support vector machine training, and can automatically adapt to different application environments. The decision-making module of the system is used to dynamically select the operational mode of the system to maintain the highest recognition accuracy and recognition efficiency.

Hybrid Pastry network for voice over Internet protocol (VoIP) service

The invention discloses a hybrid Pastry network for a voice over Internet protocol (VoIP) service, which belongs to the technical field of networks. Nodes in the hybrid Pastry network provided by the invention are divided into super nodes and ordinary nodes, wherein the super nodes form a main Pastry network; each super node manages a Pastry sub-network consisting of the ordinary nodes, and keepsand maintains all the information of the nodes in the Pastry sub-networks managed by the super nodes; and when the nodes in the Pastry sub-networks are required to communicate with the other nodes, the other nodes are first searched in the Pastry sub-networks where the nodes are, and if the Pastry sub-networks where the nodes are do not comprise the other nodes, the other nodes are searched in the other sub-networks by the main Pastry network. The hybrid Pastry network also utilizes a dynamic contact frequency grouping method and a recently-contacting node set-trust mechanism method to further improve ...

Face detection method and device

The embodiment of the invention discloses a face detection method and device. The method comprises the following steps: carrying out edge detection processing on a preprocessed image obtained by preprocessing; obtaining an edge detection area and the length value, the width value and the length-width ratio of the edge detection area; according to the length value, the width value and the length-width ratio, obtaining a round area to be detected; carrying out expanded processing on the complexion area to the preprocessed image within the coverage range of the round area to be detected, and obtaining a first face contour; carrying out light compensation processing and complexion detection on the first light compensation image within the coverage range of the round area to be detected to obtain a second face contour; and combining a first face contour with a second face contour to obtain the face image. The device comprises a contour detection module, a complexion area expansion module, a ...

Security threat processing method of portable mobile terminal

The invention discloses a security threat processing method of a portable mobile terminal. The method comprises the following steps: locally building a light security threat database, matching suspect data, directly processing the suspect data when successfully matching, sending the suspect data to a cloud end when not successfully matching, matching the suspect data with a security threat database of the cloud end by the cloud end, and further processing according to a matching result; no matter cloud-end matching or local matching exists, performing frequency updating on feature information corresponding to the suspect data, and updating the local security threat database according to frequency information to relatively fix the volume of the local security threat database. According to the security threat processing method, most of calculation tasks of security threat processing tasks are transferred to a cloud-end server in a manner of combining cloud computing with terminal detection ...

Integrated method for filtering short message by introducing query software

The invention relates to an integrated method for filtering a short message by introducing query software, which realizes an integrated multi-filtration mechanism by introducing a concept of identifying the short message based on the query software and combining the advantages of conventional technological means. In the method, a sensitive word identification range can be efficiently enlarged by replacing the keyword query part with pinyin; the pertinence is higher by setting a black list and a white list; and the introduced query software can further identify the property of the short message by analyzing the source of the short message. The novel and integrated method improves the accuracy of identifying spam short messages, reduces the error deletion rate, and has the advantages of simple and easy operation and capacity of enlarging the identification range by querying the source of the short message and dividing numbers according to regional groups.

User grading recommendation method for improving collaborative filtering

The invention discloses a user grading recommendation method for improving collaborative filtering, which comprises the following steps of: classifying users according to different user attributes; and different recommendation methods are adopted according to customer classification. The invention aims to improve the problems of data sparsity and data imbalance caused by lack of implicit feedback in matrix decomposition due to inaccurate recommendation and less user score information caused by only relying on user score information in collaborative filtering similarity calculation.

Path planning method based on self-adaptive distribution strategy under emergency situation

The invention discloses a path planning method based on a self-adaptive distribution strategy under an emergency condition. The method comprises the following steps: establishing an emergency degree evaluation model, and evaluating the emergency degree; a distribution strategy model is established, and an emergency distribution strategy is made for emergency situations and is embodied in a distribution strategy influence factor mode; establishing a path planning model, and adaptively adjusting the model based on the distribution strategy influence factors; an emergency distribution request priority calculation formula is established, and the priority of each emergency distribution request is calculated and evaluated; and solving the path planning model and the data to obtain a path planning result. According to the method and the system, the sudden emergency distribution request of the customer is timely and effectively responded, and the proper emergency distribution strategy is selected ...

Method and system for recognizing end-to-end flux

The embodiment of the invention discloses an end-to-end flow recognition method and a system thereof, wherein the method comprises the following steps: an eigenvector is constructed according to the linking number and port number and a training sample set is constructed according to the eigenvector; the training sample set is used for training a classification mode of a support vector machine; and the classification mode of the support vector machine is used for recognizing P2P flow from network flow so as to realize accurate and complete recognition of the P2P flow in the network flow and to provide conditions for the further effective control of the P2P flow.

Move glass rotor device

The utility model discloses a move glass rotor device, by the base, elevating system, go up work or material rest and material loading actuating mechanism, the elevating system end is installed at the base side surface, the connecting block is established on its top, establish the axle sleeve on the connecting block in addition, it comprises drive shaft and transportation arm to go up the work or material rest, it comprises actuating arm and freight transportation arm to transport the arm, the side surface at the actuating arm is installed through guiding mechanism in addition to the freight transportation arm, guiding mechanism comprises adjust connection mechanism and adjustment actuating mechanism, freight transportation arm upper surface and lower surface are all established at least two and are grabbed the glassware, the drive shaft is connected with elevating system through the axle sleeve in addition, and drive shaft one end is connected with material loading actuating mechanism ...

Video recommendation method based on image data processing

The invention discloses a video recommendation method based on image data processing, and the method comprises the steps: carrying out the training set preprocessing of video scoring data, and obtaining a video scoring matrix; correcting the video scoring matrix through an exponential decay function with time information; calculating a high-order similarity matrix through cosine similarity and a neighborhood motif structure; by adopting the method, the user cosine similarity matrix and the user high-order similarity matrix are linearly combined to obtain the user enhancement matrix, and the user video type interest matrix and the user high-order similarity matrix are jointly decomposed to relieve the problem of data sparsity, so that the interested video can be recommended for the user in a personalized manner, and the recommendation quality is improved.

Monitoring video compression method and equipment

The invention provides a monitoring video compression method and monitoring video compression equipment. The method comprises the following steps of: acquiring a video frame; performing content identification on each macro block in the video frame to obtain the content identification result of each macro block, wherein the content identification comprises at least one of motion detection and contour detection; obtaining a quantization parameter (QP) value of each macro block according to the content identification result and coding type of each macro block; and performing quantization coding on each macro block by adopting corresponding QP values respectively. The embodiment of the invention can remove content redundancy and improve compression performance.

Zero-gas-consumption energy-saving adsorption drying method and system

The invention relates to a zero-gas-consumption energy-saving adsorption drying method and system. The method comprises the following steps: mixing inlet compressed air with regenerated air flow, and feeding the mixture into an adsorption tower for adsorption drying treatment; the treated gas flows out through an outlet pipeline, and part of dry gas is separated from an outlet to serve as regeneration gas flow; after the pressure is increased through an air booster pump, the air enters a cold blowing tower for regeneration cold blowing, or is directly preheated through a heat exchanger, and then enters an electric heater to be heated to the final required temperature; the heated regenerated heating gas flow enters the heating desorption tower again so as to complete desorption and heat addition and become high-temperature and high-humidity gas; and then the air flow enters the water cooler to be cooled, and the cooled air flow returns to the inlet pipeline to be mixed with the inlet compressed ...

Video score prediction method based on deep neural network and double regularization

The invention relates to a video score prediction method based on a deep neural network and double regularization, and the method comprises the steps: reconstructing a user-video score matrix, and introducing a video correlation regular term with user activeness and a reliable nearest neighbor regular term; a matrix decomposition recommendation model fusing a video association regular item with user activity and a reliable nearest neighbor regular item is constructed, potential features are input into a deep neural network to obtain a result of a deep neural network model, and the result of the deep neural network model is combined with a matrix decomposition structure to obtain a final prediction score. The precision of prediction scoring is improved; the method comprises the following steps: acquiring user video comments, mining related information in the user video comments by using an LDA model, generating a user type potential feature matrix and a video type potential feature matrix ...

Carbon emission capability prediction method and device based on BP neural network

The invention provides a carbon emission capability prediction method based on a BP neural network, and the method comprises the steps: collecting carbon emission historical data, and carrying out the preprocessing of the historical data, including error correction, vacancy filling, and initial data generation; dividing the initial data, generating a training set and a test set, training a BP neural network model, sequentially inputting the data segmented into a plurality of training samples into the BP neural network model, selecting an S-type transfer function to process the sample data, and adjusting a network weight and a threshold value of an error function, the minimum value of the error function is reached; when the effect of the BP neural network in the training process is convergence, training is stopped, and a carbon emission prediction model is generated; and inputting carbon emission data into the carbon emission prediction model, and outputting a prediction result. According ...

Data transmission method and related device

The invention relates to the field of a communication technology and discloses a data transmission method and related device. The data transmission method comprises the following steps: reading a packet queue to be sent currently from a packet cache pool; coding packets in the packet queue by virtue of a coding method based on a fountain coding model to obtain XOR (exclusive OR) packets; performing forward error correction coding on the XOR packets; sending the XOR packets subjected to the forward error correction coding to a client; and if an automatic repeat request from the client is received in the process of sending the XOR packets subjected to the forward error correction coding to the client, sending a decoding key packet subjected to the forward error correction coding to the client, wherein the automatic repeat request comprises the identifier of the decoding key packet required by the client. According to the invention, the decoding success rate of the client in a 3G (3rd generation ...

不受蛋白质干扰快速检测水发或水产品中甲醛成份的试纸

The test paper for fast detecting formaldehyde content in aquatic product is prepared with common test paper and through cutting into strip, soaking in the reagent for 2 min, lightproof drying at room temperature and is lightproof stored. Of the reagent solution, each 100 ml contains acetylacetone in 0.5-2 ml and ammonum acetate 15-50 g. When the test paper is used, the test paper is soaked or dipped in soaking liquid of aquatic product or the soaking liquid is dropped to the test paper, and when the soaking liquid contains formaldehyde over 30 ppm, the wet test paper will change its color from white to yellow quickly with the color changing time decreasing with the increased formaldehyde content. Compared with standard color card may judge the concentration range of formaldehyde. The advantages includes no interference on detection from protein, simple test paper storing condition and fast detection.

Peer network secure routing method based on multi-dimension distributed hash table

The Peer-to-Peer safe routing method based on a multidimensional distributed hash table comprises: designing of a multidimensional distributed hash table structure, routing transmission and hostile nodes recognition; the multidimensional distributed hash table organizes the whole P2P application nodes into a tree-like structure by dividing the node labels to responsible nodes of each different dimension, thus to provides a basis for safe routing transmission and hostile node recognition; the routing transmission is based on a multidimensional DHT structure, is a process that target nodes gradually approaches each dimension, thus to realize high routing efficiency; the hostile nodes recognition is based on the distributed hash table structure and the routing transmission, recognizes various types of hostile nodes by the saved dimension information of nodes having same dimension. By the structure, hostile nodes are effectively recognized, and routing efficiency is obviously improved.

Oil spout helical -lobe compressor mends oily system on line

The utility model relates to an oil spout helical -lobe compressor mends oily system on line, it includes the oil storage tank body, first ball valve, relief pressure valve, second ball valve and check valve, the pressure interface sets up at oil storage tank body one side head, and lubricating oil adds and mouthful sets up on oil storage tank body upper portion, mends oily interface for oil spout helical -lobe compressor and then sets up in oil storage tank body lower part, and the bottom is installed to oil storage tank body bottom, first ball valve and relief pressure valve are installed in oil storage tank body pressure power interface side, and the air supply is connected to first ball valve, and second ball valve and check valve are installed and is mended oily interface side for oil spout helical -lobe compressor at the oil storage tank body, and the pipeline that accesss to oil spout helical -lobe compressor is connected to the check valve, and lubricating oil gets into oil spout ...

Peer network secure routing method based on multi-dimension distributed hash table

The Peer-to-Peer safe routing method based on a multidimensional distributed hash table comprises: designing of a multidimensional distributed hash table structure, routing transmission and hostile nodes recognition; the multidimensional distributed hash table organizes the whole P2P application nodes into a tree-like structure by dividing the node labels to responsible nodes of each different dimension, thus to provides a basis for safe routing transmission and hostile node recognition; the routing transmission is based on a multidimensional DHT structure, is a process that target nodes gradually approaches each dimension, thus to realize high routing efficiency; the hostile nodes recognition is based on the distributed hash table structure and the routing transmission, recognizes varioustypes of hostile nodes by the saved dimension information of nodes having same dimension. By the structure, hostile nodes are effectively recognized, and routing efficiency is obviously improved.

Parallel supervisible identity privacy protection method

The invention discloses a parallel supervisible identity privacy protection method, which comprises the following steps of: constructing a credit value network through network nodes, constructing a credit weight election algorithm, and selecting the network nodes meeting requirements to form a mixing container; designing a multi-round sorting encryption drawing mechanism to elect supervision nodes, and performing multi-round sorting on the nodes to be elected according to the generated credit weight; the supervision center node initializes the mixing container, and the transaction sender generates a supervisible hidden address for the receiver; constructing a ring signature scheme based on a credit threshold value; proposing a group cooperation commitment, and adding a decentralized blind factor; and unlocking the mixed container, monitoring the container in the block chain network through an observation algorithm, verifying the container through a verification algorithm, and packaging, ...

Service discovery method and device based on 6LoWPAN (IPv6 overLow-Power Wireless Personal Area Networks)

The invention discloses a service discovery method and device based on 6LoWPAN. The service discovery method and device based on the 6LoWPAN comprises an initialization step which includes that a host respectively completes route discovery and host address registration; a service registration step which includes that an SA (service agent) announces a service time which can be provided to a border router; service inquiry step which includes that a UA (user agent) seeks SA information which can provide services for the border router, the border route sends service inquiry response messages to the UA, and application interaction is performed between the SA and the UA. According to the service discovery method and device based on the 6LoWPAN, considering limits such as 6LoWPAN terminal memory capacity and energy consumption, an interactive mechanism is simplified as much as possible, service discovery messages are simplified to reduce loads of a data packet to be adapted to a low-bitrate wireless ...

H264 coding real-time performance optimization method

The invention discloses an H264 coding real-time performance optimization method, belonging to the technical field of digital image processing. The method comprises the following steps: preprocessing the current image by adopting a quadtree progressive coding method according to the required target coding real-time efficiency before normal coding is carried out on a video frame, so as to reduce the original data required to be coded subsequently; and simultaneously, totally controlling the quality of the preprocessed image according to a preset image quality standard in the processing process, thus well meeting the requirement of a user to the quality of the image while the coding real-time performance is optimized. The method disclosed by the invention can be conveniently combined with the traditional various H264 coding optimization methods, thus further improving the coding performance.

Integrated freeze drying system

The invention relates to the technical field of freeze dryers, in particular to an integrated freeze drying system which comprises a drying machine, a cooling-water machine, a secondary refrigerant conveying pump set, a secondary refrigerant storage device and a control system, and the secondary refrigerant conveying pump set comprises a first secondary refrigerant conveying pump and a second secondary refrigerant conveying pump. The first secondary refrigerant conveying pump is connected with the secondary refrigerant storage device and the cooling-water machine, the second secondary refrigerant conveying pump is arranged between the secondary refrigerant storage device and the drying machine, and automatic control is achieved through the control system. And on the other hand, the gas-water separator can separate most condensate water, and the temperature of compressed air at the outlet of the evaporator tends to be consistent with the pressure dew point of the compressed air, so that ...

Autonomous method for peer-to-peer network, node device and system

The invention discloses a method, a node device and a system of P2P network autonomy and pertains to P2P network field. The method includes: sending the request of searching resources in P2P network; obtaining the resources information and the node trust of the resources; judging whether the trust meets the node regulation of the resources by local node; if so, establish connection with the node of the resources according to resources information and acquire the resources from the node of the resources. The node device includes: a request module, an acquiring module and a control module. The system includes a local node, a node for resources information storage and a P2P node of stored resources. The invention can search resources in the network and legally control the resources by the mode of obtaining node trust and inspecting, with more safety and trust, compared with the prior art.

Absorption type refrigeration and power combined circulating system

The invention relates to a low temperature heat energy recycling technology and discloses a combined circulation system of absorption refrigeration and power. The combined circulation system comprises heat source, a circulating device and a circulating working medium. The combined circulation system is characterized in that the circulating device comprises a rectifier, a condenser and a steam generator which are connected with the rectifier. A superheater, a turbine, an absorber, a circulating pump and a forewarmer are in turn connected with the superheater of the steam generator. A throttle valve and an evaporator are in turn connected wit the condenser. A generator is connected with the turbine in the same shaft. The power is exported by the generator. The forewarmer is connected with the rectifier. The heat source in turn passes through the super heater, the steam generator and the forewarmer. The evaporator is connected with the absorber, and at the same time the cold energy is exported ...

Method and device for P2P stream recognition

The embodiment of the invention discloses a method and a device for P2P stream recognition. The method comprises that: according to information of a data packet received by a terminal to be tested, the equipment type of a plurality of external terminals communicated with the terminal to be tested is judged; the equipment type includes a terminal which has access to the network by the network address conversion equipment and a terminal with a public network IP; according to the equipment type, the data stream information which corresponds to the external terminals is acquired, wherein the datastream information includes the information on the number and the flow quantity of the terminal accessing to the network by the network address conversion equipment and information on the number and the flow quantity of the terminal with the public network IP; and according to the data stream information which corresponds to the external terminals, whether the terminal to be tested performs the P2P ...

Method and device for recognizing data streams in multi-person online role playing game

The inventive embodiment discloses a method for identifying data stream of massive multiplayer online role playing game (MMORPG), which includes counting the quantity of data packs in available loadsof data stream in each period; dividing the quantity of the counted data packs into at least two clusters; determining the reliability of each cluster according to the ratio of number of sub-sequenceof each cluster in a set time to the number of stream gathering periods of MMORPG in the set time, which is integer times of the stream gathering period of MMORPG; and determining the data stream is MMORPG data stream if the reliability of one of the clusters is larger than a set threshold. With the inventive embodiment, the problem existing in prior art that the MMORPG data stream can not be accurately identified can be solved. The inventive embodiment simultaneously discloses a device for identifying data stream of massive multiplayer online role playing game.

Recognition method of mobile phone viruses, device and system

The embodiment of the invention discloses a recognition method of mobile phone viruses, a device and a system. The method comprises the following steps: a software message is received, when the software message comprises a first pre-estimated value, a second pre-estimated value is generated according to the size of the capacity of other messages in the software message except the first pre-estimated value, and the first pre-estimated value is generated by a sending terminal according to the size of the capacity of the generated sending message; when the absolute value of the difference value of the first pre-estimated value and the second pre-estimated value is not in the preset effective definitional domain, the software message is recognized to be bound by the mobile phone viruses. The embodiment of the invention effectively prevents the sending message from being bound by the mobile phone viruses maliciously in the network transmission process, can effectively search and kill most of ...

6LoWPAN (IPv6 over low-power wireless personal area networks)-based NDP (neighbor discovery protocol)

The invention discloses a 6LoWPAN (IPv6 over low-power wireless personal area networks)-based NDP (neighbor discovery protocol) and solves the problem of mass energy consumption of sensor nodes. A prefix information table is established, a PIS (prefix information solicitation) and a PIA (prefix information advertisement) are defined as novel messages to replace an RS (router solicitation) message and an RA (router advertisement) message to transmit prefix information, and router discovery is realized, thus usage of a multicast message of a link layer is fewer; the PIS message and the PIA message are sent by the dynamic router advertisement method, in this way, the energy conservation and sensibility on the network change are achieved in a balanced manner, and accordingly, LoWPAN network flow is greatly reduced, and compatibility with the conventional NDP is guaranteed.

Method for identifying P2P data stream, device and system thereof

The invention provides a method for identifying a P2P data stream and a device and a system thereof. The method comprises the following steps: acquiring and preprocessing an original traffic characteristic value of a data stream to be detected; matching the preprocessed traffic characteristic value with a support vector library of a pre-established multidimensional support vector machine (MSVM), if the matching is successful, identifying the data stream to be detected as the P2P data stream. The device comprises a characteristic acquiring unit which is used for acquiring the original traffic characteristic value from the data stream to be detected; a preprocessing unit which is used for preprocessing the original traffic characteristic value; a support vector matching unit which is used for matching the preprocessed traffic characteristic value with the support vector library of the pre-established multidimensional support vector machine (MSVM) and identifying whether the data stream to ...

Peer-to-peer network flow-rate identification method and device

The invention discloses a peer-to-peer (P2P) network flow-rate identification method and a device. Length of data stream packets of a given quantity is measured, the data stream packets are divided into two types according to a set length threshold value, the typical proportion of the two types of packets is calculated, if the typical proportion of the packet is more than the upper limit of the typical threshold value interval, the data stream is deemed as a peer-to-peer network flow rate. By adopting the method and the device, through the typical proportion of the packet, the data stream can be rapidly and effectively classified so as to rapidly and effectively identify the P2P network flow rate, so the identification efficiency and accuracy can be improved, and the system expenditure caused by the flow-rate detection solution can be greatly reduced.

Power cycle device for low-temperature heat energy reclamation

The invention relates to the heat energy recovery and recycling technology, in particular to a power circulating device used for the low temperature heat energy recovery. The power circulating device comprises a heat source pipeline, a circulating device and a circulation working fluid, and is characterized in that the circulating device includes a generator and a turbine which is in mechanical transmission connection with the generator; an air condenser, a condensing box, a circulating pump and a vapor generator which are sequentially connected with the exhaust outlet of the turbine; the vapor generator is connected with the gas inlet of the turbine to form a circulation loop; the heat source pipeline is connected with the vapor generator for supplying heat energy; the circulation working fluid is R123 or R134a.

Method and device for recognizing data streams in multi-person online role playing game

The inventive embodiment discloses a method for identifying data stream of massive multiplayer online role playing game (MMORPG), which includes counting the quantity of data packs in available loads of data stream in each period; dividing the quantity of the counted data packs into at least two clusters; determining the reliability of each cluster according to the ratio of number of sub-sequence of each cluster in a set time to the number of stream gathering periods of MMORPG in the set time, which is integer times of the stream gathering period of MMORPG; and determining the data stream is MMORPG data stream if the reliability of one of the clusters is larger than a set threshold. With the inventive embodiment, the problem existing in prior art that the MMORPG data stream can not be accurately identified can be solved. The inventive embodiment simultaneously discloses a device for identifying data stream of massive multiplayer online role playing game.

Part detection method, system and device based on information fusion of multiple sensors

The invention discloses a part detection method, system and electronic device based on information fusion of multiple sensors. The method comprises the steps that firstly, the multiple sensors are utilized for collecting images of detected parts, and then multiple images are formed correspondingly; secondly, the multiple images are fused to form a final fused image; thirdly, the finally fused image is matched with a template image, and the qualified rate of the parts is judged according to a matching result. By means of the method, the images can be collected through the multiple sensors, the collected images are fused so that complementary advantages of the multiple sensors in the part detection process can be achieved, the characteristics of the parts can be reflected more truly, and the detection accuracy and efficiency of the parts are improved.

Flexible and easy-to-expand safety and stability control system and method

The invention discloses a flexible and easy-to-expand safety stability control system which comprises a bottom-layer stability control looped network which comprises a main station stability control device, an execution station stability control device and an acquisition station stability control device. The main station stability control device, the execution station stability control device and the acquisition station stability control device are connected with one another to form a looped network structure; the acquisition station stability control device is used for acquiring electrical quantity and switching value information of related station elements, obtaining element state information according to the electrical quantity and switching value information, and uploading the electrical quantity, switching value and state information of the elements to the main station stability control device; the main station stability control device is used for obtaining a power grid operation mode ...

KEY DISTRIBUTION METHOD, MACHINE-TO-MACHINE (M2M) PLATFORM AND M2M TERMINAL

The present invention relates to the fields of communications and security and protection. Disclosed are a key distribution method, machine-to-machine (M2M) platform and M2M terminal, designed to solve the problem in the prior art that a key distribution method cannot balance both distribution efficiency and distribution security. The key distribution method, the M2M platform and the M2M terminal of the present invention classify different security levels based on security level classification criteria, then distribute keys according to the security levels, so that a key with high distribution efficiency is distributed in the case of a low security requirement, and a key with high security is distributed in the case of a high security requirement, thus balancing key distribution efficiency and key distribution security.

LoWPAN (low-power wireless personal area network) node secure access control method based on neighbor discovery

The invention discloses a LoWPAN (low-power wireless personal area network) node secure access control method based on neighbor discovery. The LoWPAN node secure access control method based on neighbor discovery solves the problem of communication security of 6LoWPAN (IPv6over LoWPAN) links. By means of optimization on RS (router solicitation) and RA (router advertisement) messages in a router discovery protocol, security authentication when new nodes are added into a network is achieved effectively, and whether the messages in the network are tampered or not is detected. By means of secure access control of a new node, an authentication address IP (internet protocol) list is maintained commonly within a network range, and attack and masking of malicious nodes can be prevented within the whole network range. The LoWPAN node secure access control method based on neighbor discovery has the advantages that the method is put forward based on an NDP (neighbor discovery protocol) of the 6LoWPAN ...

Recognition method and apparatus for peer-to-peer node flow

The invention discloses an identification method and a device of equivalent node flow, which belongs to the communication field, wherein the method comprises numerating the times of signal flow and data flow which are transmitted between two nodes and are alternatively appeared in a preset statistical duration, judging whether the time of signal flow and data flow which are transmitted between two nodes and are alternatively appeared is bigger than a preset time or not, if the time is bigger than the preset time, and flow transmitted between two nodes is equivalent node flow. The device comprises a statistic module, a judging module and a flow identification module. The invention numerates times of signal flow and data flow in a data packet, which are transmitted between two nodes and are alternatively appeared in a period of time, and flow transmitted between two nodes is P2P flow when times which are alternatively appeared are bigger than a preset time, the P2P flow identification technique ...

A method for defining the node logic address, distributing the node and point-to-point network

Power control method based on local channel state estimation

The invention relates to a power control method based on local channel state estimation, and aims to provide a practical wireless sensor network power control algorithm which is applicable to a sensor network and capable of sensing link state variations. The content of the power control method provided by the invention comprises the following three aspects: 1) a distributed channel estimation algorithm based on a training sequence, 2) an influence mechanism of power control technologies for major network performance indexes, and 3) a power control algorithm based on a non-cooperative game model.

Remote home health care system

The invention discloses a remote home health care system. The home health care system comprises a fusion sorting subsystem used for receiving physical sign data parameters collected by a sensor in real time, conducting fusion sorting processing on the physical sign data parameters and diagnosing and feeding back the body condition of a user in real time according to physiological data and physiological models in a physiological model library, a resource optimization subsystem used for regularly optimizing the physiological data in a physiological database, generating an individualized physiological model for the user according to the historical physiological data in the physiological database, storing the physiological model in the physiological model library, and updating the physiological models in the physiological model library according to the latest physiological data in the physiological database and a comprehensive assessment subsystem used for predicting the physical sign change ...

Multi-target emergency material center site selection method based on improved hunter optimization algorithm

The invention discloses a multi-target emergency material center site selection method based on an improved hunter optimization algorithm, and the method comprises the steps: carrying out the dynamic prediction of the demand quantity of emergency materials at a demand point according to the different characteristics of an emergency event in different periods, i.e., an initial stage and a later stage; constructing a demand point rescue priority evaluation system based on the predicted material demand quantity, disaster victim conditions, infrastructures and other influence factors; aiming at different rescue tasks and work in different periods of the emergency event, constructing a multi-target emergency material center site selection model in a dynamic environment; and solving the mathematical model by using an improved hunter optimization algorithm, and outputting an optimal scheme for site selection of the multi-target emergency material center. The problem that the algorithm falls into ...

P2P data stream recognition method, apparatus and system

The embodiment of the invention discloses a method, a network device and a network system for identifying a P2P network data flow. The method comprises the following steps: acquiring a flow rate characteristic value from a captured data packet of the data flow to be identified; using the flow rate characteristic value as an input characteristic vector of an identification unit; and inputting the input characteristic vector to the identification unit completing training in advance for the identification unit to identify whether the data flow to be identified is a P2P data flow. The network device comprises an flow rate characteristic value acquisition unit and the identification unit, wherein the flow rate characteristic value acquisition unit is used for acquiring the flow rate characteristic value of the data packet from a captured data flow to be identified; and the identification unit is used for identifying whether the data flow to be identified is a P2P data flow according to the input ...

Hot resource search method and device in point-to-point file sharing

Mobile terminal application friendliness evaluation method based on feature classification

The invention discloses a mobile terminal application friendliness evaluation method based on feature classification. The method comprises the steps that application classification is carried out according to information inside an index library, definition is carried out on the concrete operations corresponding to the applications in the class, data are collected, scoring is carried out in a classification mode, and data in the index library are fed back and updated according to the scoring results. According to the mobile terminal application friendliness evaluation method, the network dynamic condition can be analyzed in an assisting mode, the resource bottleneck is found in time, negative effects such as service timeout are avoided, network safety is ensured, a friendly intelligent terminal ecological system is created through the analysis, evaluation, optimization, specification and the like carried out on the mobile application network friendliness, the resource utilization rate is ...

Slice level based dynamic interleaving method in video transmission

The invention relates to a slice level based dynamic interleaving method in video transmission, which is based on three parts of a video analyzer, slice strategy and interleaving strategy. The video analyzer reflects important information of a whole image through three indexes of image quality estimation (peak signal to noise ratio), face identification (reflection of image importance) and movement estimation (data volume) by analyzing a video image, and then gets the weight number of the three indexes comprehensively so as to provide a base for the consequent selection of the slice strategy and the interleaving strategy; in the slice strategy part, a decomposed video single frame is decomposed secondarily on the basis of a slice block, and Slice is used as a basic task scheduling unit to take part in interleaving; and based on slice, an interleaver is required to select an interleaving method reasonably and determine interleaving depth according to the size of data volume and the quality ...

Method, equipment and system for implementing stream media caching replacement

The invention discloses a realizing method of stream media buffer transposition, which comprises the following steps: a request from a client side node is received, and the stream media object required by the client side node is obtained; whether the size of the stream media object required by the client side node is larger than current buffer space is judged, if the judgment result is yes, the transpositional factor of each stream media object stored in the buffer depending on the network delay, duplicate amount, size and popularity of the stream media object stored in the buffer is obtained,and the size of the transpositional factor corresponds to the size of the priority level that the stream media object should be transposed; the stream media object of the larger priority level in thebuffer is transposed with the obtained stream media object. Meanwhile, the invention discloses a device and the system for realizing the stream media buffer transposition. The invention has the advantages ...

Multi-compartment point-to-point goods taking and delivering path planning method considering loading and unloading constraints

The invention discloses a multi-carriage point-to-point goods taking and delivering path planning method considering loading and unloading constraints, which comprises the following steps: comprehensively considering factors influencing goods transportation, combining the characteristics of multi-carriage point-to-point goods taking and delivering, generating an initial population solution, and based on a meta-heuristic method of the population and a local search strategy, establishing a multi-carriage point-to-point goods taking and delivering path planning scheme; proper vehicle and cargo matching, loading and unloading schemes and path planning are obtained; the invention further provides a scheme, and the scheme is divided into three optimization methods to carry out matching and path planning on the pickup and delivery nodes and the vehicles. The preprocessing method comprises the steps of inputting and analyzing multiple information and generating an initial scheme population; a population ...

Method and system for recognizing end-to-end flux

The embodiment of the invention discloses an end-to-end flow recognition method and a system thereof, wherein the method comprises the following steps: an eigenvector is constructed according to the linking number and port number and a training sample set is constructed according to the eigenvector; the training sample set is used for training a classification mode of a support vector machine; and the classification mode of the support vector machine is used for recognizing P2P flow from network flow so as to realize accurate and complete recognition of the P2P flow in the network flow and toprovide conditions for the further effective control of the P2P flow.

Non-contact micro particulate matter rotating air curtain trapping device

The invention discloses a non-contact micro particulate matter rotating air curtain trapping device which comprises a middle flow guide device, the middle flow guide device comprises a center exhaust pipe and a cavity structure arranged on the periphery of the center exhaust pipe, and an annular air outlet is formed between the outer wall of the center exhaust pipe and the inner wall of the cavity structure. A guide vane structure is arranged in the annular air outlet, an air hood is formed outside the center exhaust pipe and the cavity structure, the cavity structure is communicated with an air outlet of an air blower through a first air pipe extending out of the air hood, and the top end of the center exhaust pipe extends out of the air hood to be communicated with a second air pipe. The second air pipe is communicated with an air inlet of a centrifugal fan, an air outlet of the centrifugal fan is communicated with a collecting bag through a third air pipe, and a collecting opening is ...

Intelligent power grid protection fault identification method and device based on adaptive genetic algorithm

The invention provides an intelligent power grid protection fault identification method based on an adaptive genetic algorithm, and the method comprises the steps: carrying out the coding of a fault problem through binary coding according to a power grid structure, and generating a fault digital coding string; establishing an expectation function model based on the fault element state represented by the fault digital coding string, the system structure and the protection action logic; establishing a fitness function according to the acquired state of the protection strategy information and the expected state of the protection action information calculated by the expected function model; and adopting a genetic algorithm, taking the fault digital coding string as a population individual, screening a new generation of individuals according to the fitness function, carrying out hybridization, and evaluating an individual optimal solution to obtain a final solution. The fault identification ...

DoS detection system of 6LoWPAN sensing network

The invention belongs to the field of security of a wireless sensing network, and provides a DoS detection system of a 6LoWPAN sensing network. The system employs a layered design and is divided into a perception layer, an adaptation layer and a network layer. The perception layer acquires correlation data from a real sensing world and transmits the data to the adaptation layer. The adaptation layer performs header compression, MAC address conversion and address registration. The network layer carries out performance management, state management and security management on the system. According to the invention, the influence of secondary factors on classification performance is reduced; dimensions are decreased, data redundancy information is reduced, and computation is reduced; and the classification performance of a support vector machine is improved, and the real-time performance of intrusion detection and the intrusion detection precision are enhanced.

Design method for high-speed multi-dimension message classification

The invention discloses a design method for high-speed multi-dimension message classification. The method has the advantages that the high-speed multi-dimension message classification can be optimized by using backbone network flow features, and in addition, the optimization problem is concluded into an optimum flow classification tree for calculating the dynamic flow classification cost minimization in the current timeslice; a solving method of the optimum flow classification tree comprises the following four parts including a layer division method for optimizing the message classification tree by using the large-scale backbone network flow features, a classification domain entropy calculation method for measuring the classification capability of various classification domains on the current flow, a finding method for reducing the classification node finding and copying cost by using flow length features and effectively accelerating the message classification speed, and an updating method ...

Multi-protocol layer interpretation method for constructing hybrid network of internet protocol version four and version six

The invention discloses a multiple protocol layer translation method for establishing a hybrid network of Internet protocol versions 4 and 6 to solve the communication problem of the transition of the Internet towards an IPV6 network, which can effectively reduce capital input, improve information transmission efficiency, realize seamless exchange visits and smooth transition and establish the multiple protocol layer translation technique of the hybrid network. The MPLT technique consists of three basic constituent parts, namely, an address/port translation and conversion module at the lowest layer, protocol translation and conversion modules PT64 and PT46 at the middle layer, and an translation module of an application layer at the top layer, and through applying the multiple protocol layer translation technique MPLT in a proxy server that connects two types of networks, IPv4 and IPv6 and under the condition of not changing the original network topology, the three big problems of the network ...

Method for identifying P2P data stream, device and system thereof

The invention provides a method for identifying a P2P data stream and a device and a system thereof. The method comprises the following steps: acquiring and preprocessing an original traffic characteristic value of a data stream to be detected; matching the preprocessed traffic characteristic value with a support vector library of a pre-established multidimensional support vector machine (MSVM), if the matching is successful, identifying the data stream to be detected as the P2P data stream. The device comprises a characteristic acquiring unit which is used for acquiring the original traffic characteristic value from the data stream to be detected; a preprocessing unit which is used for preprocessing the original traffic characteristic value; a support vector matching unit which is used for matching the preprocessed traffic characteristic value with the support vector library of the pre-established multidimensional support vector machine (MSVM) and identifying whether the data stream to ...

Group-fused collaborative knowledge graph network recommendation method

The invention discloses a group-fused collaborative knowledge graph network recommendation method. The method comprises the following steps: acquiring user group data, user item interaction data and knowledge graph data; fusing user project interaction and a knowledge graph into a collaborative knowledge graph through project nodes, and expanding a user project bipartite graph in the collaborative knowledge graph into a tripartite graph by using user group data; using a transR knowledge graph representation method to perform embedded representation on nodes and relationships; converting the group user item tripartite graph into a plurality of relation sub-graphs through a meta-path method; performing similarity analysis on the sub-graphs to obtain user-user and project-project similarity relationships and expressions, and updating node embedding of the knowledge graph; information transmission and aggregation are carried out by using an improved attention mechanism based on user potential ...

Device suitable for stably observing movement process of particles in turbulent flow field

The invention discloses a device suitable for stably observing the movement process of particles in a turbulent flow field. The device comprises a pipe flow section, a flow stabilizing groove, a water groove, a submersible pump, a high-speed dynamic shooting system and a continuous laser system. The upper end of the pipe flow section is connected with a valve and a flowmeter and communicated with the water tank, the lower end of the pipe flow section is connected with an outlet of the flow stabilizing tank, and a fixed grating is installed in the pipe flow section through nuts; the submersible pump is placed in the water tank to pump water into the steady flow tank; three partition plates are vertically arranged in the steady flow groove, small holes are formed in the lower portion of the second partition plate and are slightly higher than the other two partition plates, fluid in the steady flow groove flows through the grating from the bottom of the pipe flow section to form turbulent ...

Micro-fine particle flotation turbulence desorption behavior observation and desorption probability measurement device

The invention discloses a micro-fine particle flotation turbulence desorption behavior observation and desorption probability measurement device. The micro-fine particle flotation turbulence desorption behavior observation and desorption probability measurement device comprises an air inlet device, a stirring device, an adhesion section, a desorption section, a vibration device and a collection section. The air inlet device is composed of a micro-injection pump and an air inlet pipe, and an outlet of the air inlet pipe is fixed to the lower half section of the adhesion section. The stirring device is placed at the bottom of the adhesion section and achieves sufficient dispersion of particles at the bottom of the adhesion section. And the upper part of the adhesion section is connected with the bottom of the desorption section through a tapered reducer. A vibration grid is arranged in the desorption section, the upper part of the desorption section is communicated with the collection section ...

Method for automatically portioning hair area

The invention provides a method for automatically portioning a hair area, relating to the technical field of a hair partitioning method and belonging to the field of computer vision. The method comprises the following steps of: step 1, detecting the face: using a face detection module for detecting the face position from one input face picture by using a trained cascade classifier; step 2, marking target background marks: using a target background marking module to line out the interested area, and finding out the most possible target mark and the background mark according to position and color characteristics; and step 3, image partitioning: according to the target background marks, using an image partitioning module to partition the hair area and output the hair area. The method provided by the invention uses the image processing technology to perform face detection, target background marking, image partitioning and the like to an input image, and output the hear area in the image. The ...

Mixed structure invasion detection system rule base establishing method

Disclosed is a rule base creation method of a hybrid architecture intrusion detection system, which proposes to create a data packet identification mechanism; the mechanism aims to identity the type of the data packet and start the corresponding rule base (IPv4 or IPv6) for feature identification; the identification method of the mechanism is based on the data packet feature under the hybrid architecture environment of IPv4 and IPv6 and analyzes the feature of the corresponding data packet under different network communication modes and different situations; the method of constructing the IPv4 feature base and the IPv6 feature base and the aspects need to be considered are basically the same to that of the traditional method; the novel behavior features brought by the characteristics of the IPv6 data packet and the IPv6 features need to be considered greatly in the invention. As for the organization form of the rules, the rule base creation method of the hybrid architecture intrusion detection ...

Diesel engine cylinder air leakage detection method and detection apparatus based on high rotation speed differential pressure

The invention discloses a diesel engine cylinder air leakage detection method based on high rotation speed differential pressure and a diesel engine cylinder air leakage detection apparatus based on high rotation speed differential pressure. The method comprises the following steps: step 1, under different environments and conditions, measuring the air leakage area at the keystone ring opening of a piston and the change of working medium pressure in a cylinder so as to obtain a relational expression between the air leakage area at the keystone ring opening and the working medium pressure in the cylinder; step 2, detecting the working medium pressure in the cylinder of a vehicular-mounted diesel engine; and step 3, by use of the detected working medium pressure in the cylinder of the vehicular-mounted diesel engine and the relational expression, obtaining a detection value of the air leakage area at the keystone ring opening, and comparing the detection value and a preset air leakage area ...

Hybrid motorcade scheduling method based on dung beetle optimization algorithm

The invention discloses a hybrid motorcade scheduling method based on a dung beetle optimization algorithm. The method comprises the following steps: obtaining order data of a user; obtaining a fitting function according to the historical travel data, and calculating the power consumption of the electric vehicle at different temperatures; establishing an objective function, and setting constraint conditions; and solving the scheduling problem model of the hybrid motorcade by using an improved dung beetle optimization algorithm to obtain an objective function value and a distribution route scheme which are output after algorithm iteration is completed. The traveling reliability of the electric vehicle can be improved, the probability that a driver generates mileage anxiety is reduced, the road network permeability of the electric vehicle which is a clean energy traffic tool is improved, the algorithm keeps balance between local search and global search, and the Levy flight strategy with ...

Terminal delivery method and device based on customer classification

The invention discloses a terminal distribution method and device based on customer classification, and the method comprises the steps: recognizing the information of an express parcel arriving at a terminal website, and inputting all the recognized information of the express parcel into a website database; calling customer information of a to-be-delivered express from a customer information database, performing clustering analysis by using the customer information, and classifying customers; based on the website database and the clustering analysis result, adding the express needing to be delivered currently into the delivery order; all to-be-delivered places are marked in a map, path planning is carried out in combination with the current vehicle use condition and the real-time road condition information, and a courier or an unmanned vehicle carries out delivery according to the planned path; according to the invention, the terminal delivery of the express is carried out based on the ...

Method for detecting peer-to-peer file sharing programme

Power generation system used for heat source at low temperature of 60-90 DEG C

The invention relates to the field of lower temperature heat source reutilization and discloses a power generation system for a 60 to 90 DEG C low temperature heat source. The power generation system comprises a generator, a circulating device and a circulating working medium. The power generation system is characterized in that the circulating device comprises a turbine in the transmission connection with the generator, an air cooling condensation device, a circulating pump and a steam generator for absorbing the energy of the low temperature heat source; the air cooling condensation device, the circulating pump and the steam generator are connected in series with the air outlet of the turbine in turn; and the outlet of the steam generator is connected with the air inlet of the turbine to form a circulating loop which has the circulation working medium of carbon dioxide.

Method and device for evaluating image quality

The invention discloses a method for evaluating image quality, comprising the step of obtaining a human eye vision evaluation model by training according to human eye vision character parameters of images with preset quantity and various preset subjective evaluation results. In the model, the human eye vision character parameters are adopted as input variables, and the quality evaluation results are adopted as output functions; an image to be evaluated is obtained, and the human eye vision character parameters of the image to be evaluated are extracted; and then the quality evaluation of the image to be evaluated is calculated and obtained by using the human eye vision evaluation model according to the extracted character parameters. The invention also provides a device for evaluating the image quality. The method and the device can enhance the accuracy and the stability of the image quality evaluation result.

Inter-cloud-storage-system data migration encryption method

The invention discloses an inter-cloud-storage-system data migration encryption method, and relates to the technical field of data migration and cluster parallel computing. The acting object of the inter-cloud-storage-system data migration encryption method is that multiple kinds of proven safety technology RBAC, access control rules and the like are combined between two cloud systems, namely in the public cloud-to-public cloud scene, and the safety data migration method is obtained. An access strategy of an organization is achieved through access control based on identities, central nodes of source systems serve as subjects, central nodes of target systems serve as objects, and communication between the subjects and the objects can be implemented only after verification is carried out through the access rules, namely permission expressions. According to the RBAC, roles are introduced into the subjects, labels are introduced into the objects, if verification is successful, the objects return ...

Open type heat pump air separation and efficient ammonia synthesis system based on LNG cold energy

The invention relates to an open type heat pump air separation and efficient ammonia synthesis system based on LNG (Liquefied Natural Gas) cold energy, which comprises an LNG cooling system, a two-stage heat pump rectification air separation nitrogen production system, a methane steam reforming hydrogen production system and an ammonia synthesis system, the two-stage heat pump rectification air separation nitrogen-making system separates nitrogen from the pretreated air and conveys the nitrogen to the ammonia synthesis system; the methane steam reforming hydrogen production system is used for fully reacting methane with water, separating out hydrogen and sending the hydrogen to the ammonia synthesis system, the ammonia synthesis system is used for mixing nitrogen and hydrogen and reacting to generate ammonia, and liquid ammonia is separated out through the cooling system; the LNG cooling system serves as a heat exchange cold source of an air separation part in the two-stage heat pump rectification ...

Networking type abnormal flow defense method based on combining network with host computer

A network-based and a host-based combining networking abnormal traffic prevention method is a method for preventing the harms of the network performance caused by the abnormal traffic, such as the communication link of the core network is occupied by the abnormal traffic, the load of the link network equipment is too high due to the abnormal traffic, service quality of the important client sharply drops caused by the abnormal traffic, and the like. The method comprises: (1) setting a performance parameter list; (2) a flow statistic module statistical analyzing the flow information collected by a route device and comparing the information with a threshold value set by the parameter list of the step (1); (3) if the flow statistic of any host exceeds the threshold range set by the step (1), judging that abnormal traffic of the host occurs and triggering an abnormal warning mechanism; (4) the abnormal warning mechanism sending abnormal alarm to the host of the step (3) and commanding the host ...

Morchella ISSR-PCR molecular marker method

The invention relates to the field of molecular biology, in particular to a morchella esculenta ISSR-PCR molecular marking method. The invention discloses a morchella esculenta ISSR-PCR molecular marking method. The method comprises the following steps: 1) extracting morchella esculenta genome DNA; 2) carrying out PCR (Polymerase Chain Reaction) amplification; and (3) carrying out electrophoresis detection, observation and photographing on a PCR amplification product. The method comprises the following steps of: establishing an initial data matrix, calculating a genetic correlation coefficient by using NTSYSpc2.1 software, and performing clustering analysis by using an average linkage method (UPGMA), wherein the number of the strips with amplified strips is 1, and the number of the strips without strips at the same position is 0, constructing the initial data matrix, and calculating the genetic correlation coefficient by using NTSYSpc2.1 software. The method disclosed by the invention is ...

Internet of vehicles anonymous identity authentication improvement method based on group signature

The invention discloses an Internet of Vehicles anonymous identity authentication improvement method based on a group signature, and the method comprises the steps: collecting data information, and carrying out the initialization of a vehicle, a block chain model and a group signature model according to the information; confirming the communication mode of the vehicle, and adopting different authentication mechanisms according to the judged communication type of the vehicle; and judging whether a conflict occurs during vehicle communication, and if the conflict occurs, revealing the identity of the vehicle by the group administrator. According to the method, relatively perfect protection can be provided for the identity privacy of the vehicle, the problem of low signature verification efficiency caused by long-time-consuming bilinear pairwise operation in an existing group signature algorithm is solved, and the problem of privacy leakage of a signer caused by hostile attack of a single ...

Internet of things-based digital media creation system and creation method

The invention discloses an internet of things-based digital media creation system and a creation method. According to the system, professional digital media soft-hardware resources are open to a platform, so that the platform has the real-time material capturing capability and the massive digital media storage capability; and thus a unified creation function for various types of digital medias is realized and the creation efficiency is improved. The provided system comprises: an application layer, which is used for providing originality and design interfaces for movie-video special effects, animation a digital media material library; an intermediate layer, which is used for providing a digital cloud media platform and providing movie-video special effect and animation production software, high reality parallel rendering engine software and a massive digital media material library based on the platform; and a base layer, which is used for providing a digital media service based on the Internet ...

Remote home healthcare system

A remote home health care system is described. The system includes: a fusion sorting subsystem configured to receive physical sign data parameters collected by a sensor in real time, perform fusion sorting processing on the physical sign data parameters, pre-diagnose a physical condition of a user in real time according to physiological data and a physiological model in a physiological model library and feed back the pre-diagnosed physical condition; a resource optimization subsystem configured to optimize the physiological data in a physiological database periodically, generate a personalized physiological model for the user according to historical physiological data in the physiological database, store the generated physiological model in the physiological model library, and update the physiological model in the physiological model library according to the latest physiological data in the physiological database; and a comprehensive evaluation subsystem configured to predict a changing trend and a dynamic change range of the physical signs of the user according to the physiological data in the physiological database and the physiological model in the physiological model library and evaluate a health condition of the user according to the physiological data and the result of the prediction.

Information processing method and system for 6lowpan extension field

An information processing method and system for an extended 6lowpan field are disclosed. The method includes: when a case of context information updating occurs in the extended 6lowpan field, triggering a multi-source synchronization mechanism, so as to accomplish a synchronization between context value information and time among a plurality of border routes; and at least one border route distributing the updated context information within the extended 6lowpan field. The information processing method for the extended 6lowpan field proposed in the embodiments of the present invention is completely based on the neighbor discovery protocol standard draft proposed by the IETF organization, which has stronger feasibility and extensive applicability; moreover, it can solve the problem of how to ensure the consistency of released context information in a case that there are a plurality of border routes within the extended 6lowpan field.

6lowpan network-based service discovery method and apparatus