BP neural network to forecast non-linear system, especially the financial data system, has a very strong capacity. A system model based on BP algorithm for forecast stock index was studied and shanghai complex index was forecasted in this paper. This paper has collected the index data of shanghai stock...

This paper introduces the principles of two rate-limiting strategies--HQoS and GTS, and researches the impact of the two strategies on the data transmission of different types of services. By analyzing data transmission mechanism and comparing experimental data, this paper lays emphasis on the analysis...

In the 5G mobile communication network virtualization scenario, how to deploy service function chaining of the core network efficiently is the key problem to realize the efficient deployment of virtual Evolved Packet Core network services. In order to solve the problem that the existing deployment methods...

Web Abstraction Leads to the Generation of Software-Defined Networking (SDN). SDN unique unique CNC separation structure to control the liberation. The development background of SDN is introduced, the most mainstream SDN structure is analyzed, which is divided into three layers: application plane,data...

Aiming at the fact that present environment monitoring systems of ammunition depots have costly wire arrangement, remote monitoring, low reliability and are not able to monitor environment data timely. In this paper, sensor nodes with the core of STM32F103VE chip was designed and the Wi-Fi transmission...

Based on GIS, Baidu map API and Android SQLite database terminal software design of terminal management system which to Achieve user login, monitor the status of street lamps and fault repair and other functions, and ultimately the entire street lamp management system to achieve intelligent management...

Aiming at the lack of effective packet loss differentiation mechanism in existing heterogeneous network congestion control strategies, which leads to efficient use of bandwidth, a packet loss differentiation mechanism based on Kalman filter is proposed and applied to TFRC congestion control strategy....

Because of the tight coupling between the traditional network control layer and the data layer, the path allocation algorithm has poor globality and lack of real-time, and distribution of network traffic is unbalanced, which leads to network congestion. To solve the problem, according to the advantages...

With China's rapid economic development, accelerate the process of city, with the city, how to use better planning of city land, the expansion of the city to better understand, improve the city geographic cellular automaton model based on accuracy, is the main research direction in this field. Aiming...

By setting the detection threshold of temperature and humidity, inspection of the supermarket counters, temperature and humidity environment safety ,and display the upper and lower threshold and temperature and humidity data at the time through LCD1602, realize compare the temperature and humidity data...

In view of the characteristics of large amount of biological sequences data, fast growth rate and high sequences repeatability, a set of DNA sequences storage schemes based on HBase is proposed and implemented in combination with the related theory and technology of HBase distributed database. The pre-splitting...

Get Paid To (GPT) is a self-service model under the mobile Internet. The user downloads the APP, registers as an APP member, and then takes the task (such as going to the supermarkets to check the availability of a certain product) from the APP to earn the nominal fee of the APP for the task. Based on...

The research method of studying on parameter boundary of reservoir with polymer flooding has been established, using numerical simulation method combined with dynamic economic evaluation method. Based on Sha two 1-2 units of Shengtuo second area, the numerical simulation model is built and the influence...

Distributed photovoltaic power generation is of great importance to optimize energy structure, promote energy conservation and emission reduction, and achieve sustainable economic development. First of all, this paper analyzes the impact of distributed photovoltaic power generation paralleling in network...

According to a given joined-wing aircraft, based on the DATCOM calculation data, under typical cruise and stable hover flight conditions, cases are considered with and without the relaxation of static stability technique. The actual lift-drag ratio of the joined-wing layout and conventional layout is...

The 'social network' which is formed by user behavior and its interact relation, could link user wisdom quickly, gather huge amounts of information, accelerate the sharing of knowledge and creation. Xiaomi community using grasping user comments or response data on community BBS section of typical products...

In order to discuss the vehicle routing problem, which is a combination optimization problem, we apply drosophila algorithm. First of all, we introduces the fundamental concepts of drosophila algorithm and describes the specific implementation steps. Secondly, we analyze vehicle routing problem and mathematical...

The traditional rail detection method cannot meet the demand of line repair, so a detection algorithm for rail fastener based on computer vision is proposed, which combines projection method and scanning of pixels in specific region to position the position of fastener, and adopts gray-scale features...

In order to improve the performance of vehicle communication system and reduce the cost of testing, a LIN bus converter has been designed. This paper discusses the basic structure of LIN bus converter and the realization method of hardware and software. The design has been applied in testing of BCM....

In recent years, major and unexpected public events in our country have taken place from time to time, causing great losses to the national economy and people's lives and property. Because these emergencies have caused huge damage to various equipments, resulting in the unblocked communication and affecting...

With the development and application of business management information system, businesss own much more production and management softwares. Traditional computer labs can not deploy these application softwares and provide data sharing operations at the same time. In this paper, a cloud intelligence business...

Base on the problem that during the moment of ignition, electromagnetic environment in vehicles could cause interference to the stability and reliability of vehicle fire protection system, causing failure of the fire-prevention function. In this paper, the interference mechanism and harmfulness were...

Fuze detection is an important means for laboratory to accurately grasp the quality of fuze. After testing, a small amount of minitype fuze explosive elements will be left. Which need to be destroyed in time to eliminate potential safety hazard. Due to the shortcomings of traditional destruction equipment...

The growing demand of cloud storage service has raised a great concern to service providers aiming at high service reliability and usability. In this work, we proposed an erasure code-based approach SEDP to improve the capability of data recovery and dynamic update for cloud storage. The coding scheme...

Heavy haul railway mainly transport bulk cargo such as coal and steel. Its characteristics includes large volume of freight, complicated operation of station, obvious heavy cargo direction etc. The bulk cargo's timeliness standard is low, the occupied time between different operations of station is distinct...

In order to construct a large number of diverse and innovative fractal graphics, an arbitrary nonlinear transformation of "V(x,y)" is introduced into the classical iterated function systems to change the construction form of nonlinear iterated function systems (NIFS). The deterministic algorithm and...

To solve the credibility and supervision lacking problem in the OTC warehouse receipt trading system, a scheme of using smart contract on the blockchain to implement the OTC warehouse receipt trading system is presented. As a distributed ledger, blockchain has the advantages of decentralization, irreversibility...

Procedures of the flexible job shop scheduling problems with a workpiece can be machined with different processing time, and not necessarily equal, taking into account the green low carbon emissions is an urgent need to solve manufacturing problems, construct a to minimize the maximum completion time...

Artificial potential field method is a simple and effective path planning algorithm. In this paper, the basic idea of artificial potential field method is inherited. The gravitational potential field and repulsive potential field are introduced into particle swarm optimization. The gravitational potential...

To improve the computing capacity of domestic rugged computers, the present paper provides a design method of computing acceleration module based on Loongson 3A1500, and introduces the modular design ideas. The domestic Loongson 3A1500 processor and DDR3 memory are used in the hardware side. The present...

Traditionally it is widely acknowledged that there are gender differences in using language. Nowadays with the development of network, computer as a communication medium has attracted users around the world due to its convenience and efficiency. The problem is proposed whether gender differences in the...

Recycling is the key link in the reverse supply chain. Recycling center is a bridge between suppliers and customers. Recycling center's location often determines the recovery, distribution distance and distribution mode of logistics. In order to improve the efficiency and reduce the logistics supply...

To investigate the influence of the pedestrian size and vehicle type on the dynamics response and injury of pedestrian thorax by combining the merits of Finite Element (FE) method and analytical method of Multi-body (MB) system, the FE vehicle models and the MB pedestrian dummies were used to coupling...

To solve the problem that it is difficult to obtain the accurate locations of target objects directly by the surveillance video in Road Traffic Accidents, this paper presents a method of measuring the relative position of vehicles on the road surface by using vanishing point principle to mesh the surveillance...

Multi-UAVs close formation is the hot spot of current research. UWB (ultra-wide band) is very feasible to be applied to UAV relative positioning. In this paper, we propose to apply UWB technology to UAV relative positioning for multiple UAV close formations and consider combining UWB positioning with...

This paper briefly analyzes the status quo of uninterruptible power supply of the survey vessel communication system, expounds the composition of communication power supply, principles and functions of uninterruptible power supply, and puts forward the optimal design scheme of the existing power supply...

In recent years, more and more hash learning methods have been applied to solve large-scale vision problems. It has been shown that learning hash function by using supervised information can boost hashing quality. The state-of-the-art image retrieval hashing methods based on visual features lacks of...

In the increasingly fierce modern electronic warfare, it is crucial to hide the relevant parameters of the radar signal itself. In this paper, the background and significance of radar signal design are described. The development and current status of radar signal design are studied. The design status...

In order to analyze the dynamics of the gear transmission more efficiently, this paper builds a three-dimensional modeling software Creo, finite element software Hypermesh and dynamics simulation software based on MFBD (Multi-Flexible-Body Dynamics) technology. RecurDyn established a multi-flexible body...

With the continuous expansion of the size of China's power grid, the traditional inspection line has been difficult to meet the requirements of the future power system, research and application of inspection robot have been become necessary. Instead of manual patrol line, the inspection robot not only...

In this paper, the failure of the switch operation caused by a screw breaking of adjustable mechanisms is analyzed. A number of tests, such as macroscopic examination, chemical composition analysis, metallographic test, scanning electron microscope analysis and hardness test, were carried out on the...

Coil misalignment often takes place in wireless power transfer (WPT) systems. It may result in decrease of transfer efficiency and system instability. In this paper the mutual inductance model and the circuit equation of Magnetic Coupling Resonant WPT (MCRWPT) are established firstly. And the influence...

Based on the limitation of zero-sequence voltage compensation of traditional zero-sequence directional protection principle, an improved anti-maloperation protection strategy is proposed. First of all, by analyzing the characteristics of zero-sequence component, zero-sequence protection principle and...

A novel brush-less DC motor, with two drive methods based on bi-directional quasi-Z-source converter is studied in this paper. The parameters of quasi-Z-source network are respectively designed in square-wave and sine-wave drive methods. The BLDCM control system that applies to micro electric vehicle...

This paper focuses on the lightweight design of the 6-DOF space manipulator designed and assembled independently. The mass ratio of the arm rod is large which matters a lot on the positioning accuracy of the manipulator end. The light weight analysis is carried on to the arm rod of the space robotic...

Under the background of the new electricity system reform, the power grid investment players have more economic requirements for Distribution Investment, and the economic and social benefits brought by Distribution Investment are paid more attention. This paper presents a model considering voltage level...

Timely and accurately short-term traffic flow forecasting is very important in the application of the Intelligent Transportation System (ITS). In this paper, an improved k-nearest neighbor (K-NN) model considering upstream traffic information was proposed to forecast short-term traffic flow. In this...

With the increase of the number of railway container manufacturers, the average maintenance cost of each factory's container is uneven. In order to evaluate the quality of the container, it is necessary to do cluster analysis of railway container stations, thus classify the container by the different...

Based on the analysis of the the airline Internet level at this stage , the paper puts forward that "Centering on the passengers" is the basis of the airlines' Internet. For airlines, the final result of the Internet must be realized human-human interconnection, human-machine interconnection, human-material...

A large number of computer, communication and control technologies are applied in train operation control system, which brings the internal and external security risks to the urban rail traffic, especially under the background that security incidents of industrial control system occur frequently, security...