With the arrival of the era of big data, wind power forecasting data develops to the massive and multi-dimensional direction. Single computer lack of resources is difficult to solve the problem of wind power forecasting. In this paper, Spark cloud computing platform is introduced to solve the massive...

Short term power load sample is highly variable, and the influence factors are not determined, the data sample is little. In view of the characteristics of the load, we combine the Grey Theory and Elman neural network to predict the short-term power load. Because the gray neural network convergence is...

In order to solve the problem of data security in smart grid wide-area measurement system(WAMS),this paper analyzes the characteristics of the existing data encryption solutions, and combines with the characteristics of massive data as well as high requirement of real time in WAMS, then introduces Storm...

Attributes reduction was one of the key problems in rough set theory. However, to find the minimum attribute reduction is a NP-hard problem. This paper proposed an improved algorithm of heuristic minimal attribute reduction. First it calculates the attribute importance and gets core, then taking the...

In terms of the uncertainties and incompleteness of alarm information in power grid fault diagnosis, this paper proposes a fault diagnosis method based on rough set combined with Bayesian network. Using the ability of rough set to reduce knowledge and process indeterminate information and mine fault...

When the traditional FCM algorithm is applied to image segmentation, it is sensitive to the selection of clustering center and can not automatically determine the number of clustering center. According to these problems, this paper proposes a fuzzy clustering image segmentation algorithm based on genetic...

Feature selection is one of the important factors that affect the intrusion detection system. Aiming at the problems due to selecting the high feature dimension and the redundancy causelow detection accuracy and high missing rate in the traditional intrusion detection system.In this paper, the deep belief...

In order to improve the forecast accuracy and stability of the micro-grid uncontrollable remaining load and provide a more reliable basis for micro-grid power generation plan, an ultra-short-term micro-grid uncontrollable remaining load forecasting model based on the improved online sequential Extreme...

The research is based on a kind of pitch channel hypersonic aircraft model built is released by USA air force, adopting the digital simulation to verify the basic free flight state preliminarily. The difference of the stability and divergent could get observation through the simulation result between...

A kind of imaginary virtual flying with numerical simulation is used to testify the rightness of hypersonic aircraft with air dynamic coefficients. Since the attack angle is the most important factor that affect the stability of the hypersonic or supersonic aircraft, so a kind of virtual flying with...

Attack angle is a most important factor that affect the stability of aircraft no matter for supersonic type or hypersonic type aircraft. And height is another factor that will affect the force and moment of the whole dynamic system by change the density of air and finally it will also affect the stability...

The elasticity is a very special factor considered in modeling of supersonic aircraft, and it is usually neglected in supersonic aircraft. Since it will cause the force and moment of the aircraft totally different, so it increased the complexity and difficulty of hypersonic aircraft. To simplify the...

A kind of numerical simulation method is used to testify the open loop response of a kind high speed aircraft. Since the final aim is to the testify the rightness of the system model and its corresponding air coefficients, so virtual flying condition is set to make the system more simple and more easy...

For high speed vehicles, the engine model is difficult to built. Also it is very important and difficult to design a proper oil supplying law to make the speed of control object to tracking the desired value as accurate as possible. So a kind of speed controller is designed based on the pitch channel...

Based on a kind of pitch channel model of supersonic aircraft which is released by America air force research center, a kind of open loop testing method is proposed to testify the actuator effect of a kind of high speed aircraft. The difference between this type of aircraft and other traditional aircraft...

A kind of virtual flying condition is assumed that the trust and resistance is the same that can keep the force balance during the flying process of high speed aircraft. The main function of this virtual assumption is that it can the unstable open loop aircraft fly a longer time so more date can be gotten...

A kind of attack angle tracking controller with a former similar to PID control is proposed based on the pitch channel model of hypersonic aircraft released by America air force research center. Also the speed of the aircraft is controlled to tracking to a constant, which will make the system more stable...

The open loop response of lift wing is researched based on a kind of high speed vehicle model which is released by America air force research center. Since the speed of aircraft is too high, so its open loop response is unstable, which is difficult to do open loop actuator analysis with traditional method....

Technology report of classified protection testing and evaluating is consulted in supervision and inspection of classified protection of information. The paper brings forward a system for automatically evaluating information system’s security. The system analyses knowledge during classified security...

Development belonging to Location-Based Service (LBS) makes people’s daily lives more convenience. Compared with Outdoor Location System, which developing more and more mature, Indoor Location System achieves much more attention from community. In this paper, by comparing the advantages and disadvantages...

China CPIS policy is the fundamental policy of China cybersecurity strategy. Therefore, CPIS-compliance software solution is highly demanded to help organizations comply with CPIS associated policies and standards. In this paper, a CPIS-compliance security requirements analysis method for software development...

Cost plays a very important role in architectural engineering, and the methods to predict the cost rapidly and accurately are needed. On the basis of the valuation mode of quantities bill, this paper proposed the time series method for predicting project cost. According ti the theory of test, modeling...

This paper analyzes the theory of support vector machines-SVM and discusses the algorithms of SVM classification and regression. After overviewed the SVM application research on machinery fault diagnosis and prediction recently, it discusses the ,erits and deficiencies of SVM and the points out the bright...

To keep abreast of the state changes of the shipborne equipments and the accuracy of the measuring data , an idea that we should build up the quality estimation system of space tracking ships’ exterior measuring data is put forward. In which many methods have been taken into consideration, such as cartography,...

In order to sovle the problem of dimension disaster when mining the high-dimensional data in the data stream and the problem of poor real-time response and insufficient system throughput of dimensional reduction algorithms, a scheme of implementing PCA algorithm on Storm platform is designed. This scheme...

Based on IPSec VPN technology, we propose a scheme for realization of mobile terminal security access system. The scheme, which combines with SM2, SM3 and the IPSec, realizes the establishment of the IPSec VPN client data communication, and the client-server security communication functions by using...

MapReduce is a popular big data processing tool, but there exists a main node failure problem. In order to make the restarted JobTracker recover jobs site quickly, there are mainly two recovery mechanisms: synchronization mechanism and backup mechanism. In synchronization mechanism, TaskTracker sends...

Routing protocol has been a challenging issue in the design of wireless sensor networks. This paper presents an improving LEACH protocol for heterogeneous wireless sensor networks. The new protocol consists of a number of rounds. The wireless sensor networks have some sensor nodes that have greater power...

In this paper, a modified discrete G’/G-expansion method is used to construct exact solutions of Toda lattice equation and Ablowitz-Ladik lattice equations. With the aid of computer symbolic computation, we obtained in a uniform way hyperbolic function solutions, trigonometric function solutions and...

In this paper, the (3+1)-dimensional Jimbo-Miwa equation is solved by Fan sub-equation method with improved algorithms. As a result, many new and more general travelling wave solutions are obtained including kink-shaped soliton solutions, rational solutions, triangular periodic solutions, Jacobi and...

User comment is an important criterion for the approach of web service recommendation. But estimating the credibility of user comment is always a big challenge. This paper proposes a novel method to calculate the trust degree of the user evaluation. In the proposed method, the trust degree of the user...

We propose an unslotted CSMA with grouped sensing and analyze the throughput of SUs in multi-channel cognitive radio network. We model the system by 3-demensional continuous time Markov process, calculate the steady state probability of the system, and obtain throughput and transmission delay of SUs....

To solve the benefit-driven task scheduling problem in clouding computing, a benefit-driven task scheduling algorithm based on genetic algorithm is proposed. Under the precondition of meeting the QoS constraints, the proposed algorithm takes computation overhead, service profit and delay compensation...

Business management is an important part of enterprise management. Information management system is an important means to realize the modernization of management, goods. The current problems, the construction of business management information system, the design of big data, big data management system...

An efficient management platform of industrial park can provide data analysis and data decision support, such as operation services as investment, property management, maintenance and security. However the construction of the management platform of industrial park is the key issue to assure that the...

A systematic solution based on the design of a heterogeneous code is proposed to promote the unified governance foundation of the existing Internet of Things (IoT). The proposed scheme enables advanced functionalities and maintains the compatibility with applications of the existing identifications (QR...

Protocol format reverse based on communication data has played an important role in the fields of network security and information countermeasures. In this paper, a format reverse analysis method for binary communication protocol which based on probability alignment and differential analysis of statistic...

In the paper, we modelling for behavior of Trojan based on fuzzy analytic hierarchy process (FAHP) improved algorithms, an efficacious analysis method which good at behavioral assessment, and has been applied in many fields of malicious code analysis. Based on the model, the harmfulness of software behavior...

Smith-Waterman (SW) algorithm, which calculates the similarity between two given sequences, is broadly used in bioinformatics research field. However, the time complexity of the SW algorithm prevents it from being used for long sequence alignment. Since SW algorithm is based on dynamic programing, using...

A scheme for WSNs (wireless sensor networks) security is given by dividing sensing tetrahedron into clusters and using the symmetric polynomials in this paper. The sensing tetrahedron is divided into a number of small grids. All those sensor nodes, both ordinary sensor nodes and heterogeneous sensor...

This paper presents an outline on architecture and performance of a new message middleware based on publish/subscribe model. This architectural uses topic tree to organize topics in the publish/subscribe system. The system collects network topology information and then forward messages after routing...

Microblog has become an important part of social media, a large number of users send and thus spread information on this platform. Nowadays, the network environment of microblog is impacted by the presence of anomalies in users seriously. So the research on identifying the types of microblog users is...

This paper firstly describes a whole research framework when constructing a knowledge base for K12 education. Then the paper demonstrate thedesign of knowledge base application system for educational resource library, and analyze the how to complete the interoperability between different levels. Finally,...

In order to apply kaleidoscope patterns into textiles or garments, several methods are studied in this paper. Based on Java language, fractal algorithms, M set algorithm and Julia set algorithm are used to simulate kaleidoscope patterns. The simulation results show that the kaleidoscope patterns programed...

Due to favorable sound isolation to the impact sound transmission, People are prone to adopt floating floor as insulation structure. Of the researches on impact sound insulation through a floating floor, the theoretical study is much less than the experiment analysis. For the purpose to determine sound...

The crushing effect of waste phone's circuit boards by mechanical–physical method under different pretreatment processes (without pretreatment, disassembling electrical components, heating treatment) was investigated. The composition, mass distribution, feature, liberation degree of crushed products...

With the development of the information age, the traditional library can not meet the users' needs for information resources, it needs to be digital transformation. The mobile terminal as the currently new developed information devices, has great convenience that the user can access the Internet anytime,...

Distributed antenna system (DAS) has emerged as a promising architecture for future mobile communications. Compared with collocated antenna system (CAS), DAS has advantages in reducing transmission power and improving the cell coverage area. In this paper, the downlink performance of DAS with linear...

Through the analysis on the website traffic monitoring statistics technology, design and realize an intelligent website traffic monitoring system. The major modules have statistical generalization, latest visiting, source details, online statistics, page statistics, monthly statistics, second glance...

This paper proposes a fireman positioning method based on RFID technology, which combined RSSI and TOF ranging in automatic positioning firefighters. When the system can't measure the distance due to various reasons, it will estimate the target location of the current based on historical data. The experimental...

In view of the nonlinearity and coupling in the coordinated control system (CCS) of thermal power plants, the paper introduces a Takagi-Sugeno (T-S) fuzzy model based generalized predictive control (GPC) of CCS. First, a T-S fuzzy model with three chosen typical operating point is employed to approximate...

This paper introduces a decentralized coordinated fuzzy stabilization control of power system. First, the Takagi and Sugeno (T-S) fuzzy model is employed to approximate system-wide nonlinear model of power system. Next, based on the fuzzy model, a fuzzy controller with decentralized constrain is developed...

A novel image encryption scheme with permutation-substitution mechanism is proposed. In the permutation process, the discrete generalized Arnold map is applied to disorder pixel positions and exchange the gray values of corresponding pixels at bit-plane pair. The continuous generalized Arnold map is...

At present, the closed-loop identification methods of nonlinear systems can not provide an satisfied performance. Generally, the step responses are performed to obtain the acceptable models of industrial processes. In consideration of this, the paper proposes a state distinction based identification...

3D reconstruction from a single image is a challenging problem. In this paper, we present an improved method for 3D reconstruction. We use improved arrival time method to solve the Hamilton-Jacobi equation which is obtained from the method of shape from shading (SFS). The concave-convex ambiguity problems...

By using the on-site parameters from the middle speed mill (MSM) of the power plant, the mathematical model of middle speed mill is given by using the test-modeling method. Based on the obtained model, the dynamic matrix control (DMC) of middle speed mill is introduced in MATLAB/SIMULATION environmental....

This paper introduces an identification algorithm for a thermal system with multi-variable closed-loops. First, a kind of subspace identification algorithm based on the principle component analysis (PCA) is analyzed. Next, the PCA is used to identify the parameters of the process, where dynamic model...

A vision based automatic line inspection quadrotor aircraft was designed. The aircraft was constructed and the algorithm was designed. PIXHAWK and Raspberry Pi were used as the dual control core of quadrotor, where PIXHAWK was used to complete the attitude control and Raspberry Pi captured the video...

In order to understand the water environment quality and improve the production efficiency, a wireless sensor network localization algorithm about water quality monitoring based on RSSI ranging is proposed. Firstly the dynamic path loss index is obtained for ranging, then the measurement range is corrected...

Different from traditional document management system, the real-time collaborative document management system pays more attention to support multiple users in different places to manage a document simultaneously . In order to support natural and harmonious human to human interactions in real-time collaborative...

In this paper, the relationship between the signal amplitude counting distribution’s information entropy and the channel division is analyzed firstly. According to the character of information entropy, when the channel number is given, if the channel division way is equip-probability division, then the...

The temperature of electrical machine is determined by the cooling effect and the temperature rise can affect the service life and the power rating of machines. Therefore, improving the method of cooling the machine has an important practical significance. In this paper, a 12-slot high speed PM machine...

In order to solve the problems of the traditional network learning system, a network personalized learning system based on web mining is presented in this paper. The web mining technology is simply introduced. The system model is given and the work process of this model is depicted in detail. For improve...

From the perspective of the wisdom public security, this paper concludes the significance of case information Spatio-temporal analysis technology and points its important position in police practical teaching. Combined with the case information Spatio-temporal analysis examples researched in emergency...

Based on the MUSE simulation support environment, designed a complete graphic modeling equation of thermal hydraulic system. Developed a module library, source files library, and a series of manage and configuration tools software. This software package is complete opened and orient. It has a simple...

In full accord function with reality power unit, Operator station and engineer station provided by Ovation virtual DCS is accepted by simulation users. The development of interface between virtual DCS and simulation model is key technology for Stimulated Simulation System. The application in Guangdong...

Against such characteristics as large delay, nonlinear, time-varying and uncertainty of controlled object, the Smith-LADRC cascade control system is proposed in this paper. The principle of the LADRC is briefly introduced firstly, and then the LADRC-P control system with Smith predictor is designed and...

The line loss is an important economic and technical index to evaluate electricity power enterprise production and management, according to the nature it can be divided into theoretical line loss and management line loss. Management line loss is caused by metering equipment error or by poor management....

On the basis of the analysis of commonly used RFID authentication protocols’ shortcomings, this paper proposes a random number and hash function based RFID bi-directional authentication protocol. This protocol can resolve eavesdropping, illegal access, location tracking, impersonation and replay attack.

Service-oriented software system is facing a challenge to regulate itself promptly because of the evolving Internet environment and user requirements. In order to effectively control software of SOA dynamic evolution, by the formal tool Workflow-net, software of SOA model which is composed of four basic...

As the information era is coming, more and more sensitive information will be encrypted into databases for secure accessing. This paper focuses on encrypting String data in databases and provides a method to build index for sensitive attributes. The index is composed of partition value, characteristic...

Binary ZnSe thin films were prepared by spin-coating and chemical co-reduction, the effects of reaction conditions on thin films were investigated. The phases of obtained samples were characterized by X-ray diffraction (XRD). The size and morphology of the products were observed by scanning electron...

CuGaS2 as a ternary semiconductor with chalcopyrite structure has a direct bang-gap of 2.43 eV at room temperature corresponding to the wavelength of 0.51 ?m, it is a promising absorption layer for photovoltaic material. In this work, convergence of the plane wave cut-off energy and the K-mesh were carried...

Cu2ZnSnSe4 thin films were prepared at 160~200 oC by spin-coating and chemical co-reduction, the effects of reaction temperature, time and substrates on thin films were investigated. Experimental results show that, the temperature, reaction time and process are the main factors that affect crystal phase...

Previous efforts on die swell issues mainly focus on linear models such as Oldroyd-B, Linear PTT. However, the characteristic of Rouse Linear Entangled Polymers (Rolie-Poly) model, as a simple model derived from tube-based molecular theory, is rarely discussed before. Compared with other constitutive...

Perovskite-type cube structure LaMnO3 nanofibers of approximately 50~100 nm in diameter were synthesized via Sol-Gel processing and electrospinning technology after calcined at 900? by using polyvinypyrrolidone (10 wt %PVP) as complexing agents. The nanofibers were characterized by experiment technology....

We present a first-principles investigation of electron transport in graphene contact with Au electrodes. Using destiny function theory and a non-equilibrium Green’s function approach, we obtain the best transmission spectrum and current-voltage profiles for Au-graphene-Au contacting device. For this...

Since the source of the waste after the concrete complex, the waste concrete made from recycled coarse aggregate processing and many use restrictions, the recycled concrete technology and water treatment technology integration into a concrete drainage concrete, through experimental analysis of the recycled...

Metallic nanoparticles display unique properties that are quite different from those of individual atoms. In reality, the optical properties of the nanoparticles strongly depend on its shape. We present the electrostatic approach to evaluate scattering and absorption of different shaped nanoparticles...

With the increasing demand for large-tonnage cranes in nuclear power and other industries, the research for cranes superlift is increasingly urgent. Taking 3500t crawler crane for instance, a new kind of hydraulic drive linkage system superlift mechanism is designed and a new design method for size parameters...

Empathetic design is considered as a user-centered design approach that pays attention to the user's feelings toward a product [1][2]. But the design process and design factors are not clearly. This paper analyzed the customer needs, emotion and empathy in psychology, restudied the definition and design...

n order to meet the structural and functional demands of power grid planning research simulation laboratory for application data processing, a set of application data subsystem serving the power grid planning research simulation laboratory is designed according to the actual demand of power grid planning...

As the power supply core for power consumers, the regional power grid is responsible for maximally absorbing new energy sources and providing reliable and economic electric energy to users, thus to become an important development link of modern smart power grid. In allusion to actual conditions of regional...

Nowadays, Smart Planting has become a core and an effective technology to achieve agricultural modernization technologies. In this paper, a new scheme of smart planting innovative scheme based on the Internet of Things and Cloud Computing technology is independently developed. We provide an architecture...

Civil-integration isn’t only inevitable for globalization of military industries, but also necessary for sustainable development. As an important component of national traffic system, air traffic control provides important guarantee for national territorial airspace security and sound development of...

According to the problem that the intelligence is not high of the recognition of GIS PD types by SF6 decomposition components, using the real 110kV GIS platform, simulating two kinds of insulation defects PD of SF6 gas, and making the research on the change of the four kinds of gases of CO2?CF4?SO2F2,and...

This paper discusses how to apply the advantage of the computer to complete the management work of the track and field athletics, and make the management work more scientific and systematic, and apply the successful experience of the management to expound it theoretically.

This paper analyzes the advantages and trends of holographic projection technology and the characteristics of large sports performance arrangement using the method of literature,aiming at providing new ideas for the performance arrangement,thus facilitating new artistic system of large sports performance...

With the rapid development of information technology, the deep integration of information technology and English becomes the core of the current English learning. The rapid development of mobile technology brings much convenience in people's life, at the same time also brought new opportunity for English...

The test paper composition is an important part of the exam, how to choose an efficient, scientific and rational way, can ensure test papers the greatest extent possible to meet the different needs of users, and random, science, rationality and other characteristics, it is very critical. Aiming at the...

With the development of information technology, new writing tools are emerging, to help inspire authors and to improve writing skills and efficiency. This paper studies the problems existed in the popular writing tools. Firstly, studies the system framework, discusses the advantages and workflow for...

English grade test is a nationwide test of testing English proficiency, scores query after the test has become the most concerned issues for candidates. In order to facilitate the candidates query test scores, download exam transcripts at anytime and anywhere; by contrast with previous test scores, rationally...

The cardiovascular system is a closed pipe system, which is composed of the heart and blood vessels. It can ensure the relative constant and the metabolism of the body's environment. The diagnosis and monitoring of cardiovascular system is the key part of the sports medical supervision, which plays an...

Scope, modeling principle and methods of power distribution network equipment state control model are proposed after research according to actual needs of power distribution network equipment state control. Foundation model applicable to power distribution network equipment state control is tailored...

Standalone multi-element complementary microgrid plays a very important role in solving the electricity problems of many areas, which are rich in renewable energy but have problems in the power supply of traditional power grid. To ensure the reliability of power supply while improving overall economic...

The coupling interaction between multiple grid-connected inverters, inverters and grid in the clustered grid-connected distributed photovoltaic (PV) system can cause series and parallel harmonic resonance in the grid. The power quality of grid is seriously affected. Therefore, the resonance problem of...

To deal with the difficulties of getting network positioning signals existing in sensor network as well as the problem of the hunted signals being polluted by electromagnetic radiation, mechanism of hunting for sensor positioning signals based on correlator difference accumulative algorithm is proposed...

Millisecond pulsar can generate another type of time scale that is totally independent of atomic time scale, because physical mechanisms of pulsar time scale and atomic time scale are quite different. Usually pulsar timing observation isn't even sampled, and their data set is sparse, So we use cubic...

With the launch and implementation of the intelligent grid, the remote meter reading through power line carrier and GPRS wireless network has been widely deployed gradually. However, the wireless network based on SIM card is vulnerable to interference at present, the packet loss and drop occurring sometimes,...

Vehicle Information System is one of the important components of the modern automobile electron. Because of the development of the science and technology and the huge market demands, In-vehicle electronic equipment which was the single in-vehicle navigation equipment at the very beginning is developing...