The implementation of transform precoding is one of the important steps for SC-FDMA baseband signal generation of physical uplink shared channel in TD-LTE. According to the definition of transform precoding, the mixed radix DFT which is made up of the radix-2, radix-3, radix-5 should be realized, and...

Using wavelet smoothing method, we consider the semiparametric regression model with independent heteroscedastic errors. We investigate the asymptotic normality and weak consistence rates of wavelet estimators.

The HSGS characteristic for secondary arc limitation on UHV parallel lines is investigated versus singlephase to ground faults and cross-country faults, respectively by theoretical analysis and RTDS verification. The influential factors such as electrostatic induction, electromagnetic coupling, line...

Traditional 2 dimensional visualization method of geological data is carried out in 3 dimensional by OpenGL. This include process and visualize of large scale data of digital elevation model height data, remote sensing texture data, geological environment information data of point, line and polygon types...

In this paper, AHP is applied to the evaluation of student maintenance capability in virtual maintenance environment, and the design of evaluation system is achieved. Firstly, the mathematical model of AHP is introduced. And then, according to the index system of maintenance training in aircraft maintenance...

The user selection and resource allocation problem for the downlink of Orthogonal Frequency Division Multiple Access (OFDMA) wireless systems is investigated. It is assumed that the Base Station (BS) consists of multiple antennas in a distributed Antenna System (DAS), while a single antenna is available...

To solve the problem that standard Particle Swarm Optimization can get into local optimum prematurely, an improved Particle Swarm Optimization algorithm is proposed. The improved algorithm can be used to optimize every parameters of Auto carrier landing system. It improves the population diversity and...

This study is concerned about how to optimize the production sequences to minimize the makespan in hybrid flow shops with limited intermediate buffers. An improved memetic algorithm (IMA) is proposed for solving the NP-hard problem. In this algorithm, the method of generating the initial population,...

Without horizontal and vertical stabilizers, a combat flying wing with high aspect-ratio has strong nonlinear dynamic feature, and use multiple control surfaces to realize multi-axis controls. Its flight control system must be able to handle nonlinearity and control redundancy problems. The six-degree-of-freedom...

Firefly Algorithm (FA) is a new meta-heuristic evolutionary algorithm and it has fast calculation and excellent global search capability. Ant Colony Algorithm (ACA) has a positive feedback mechanism and distributed optimization method. Its solution has high accuracy. For characteristics of FA and ACA,...

Directory synchronization in distributed environment means making the directories specified in multiple computers under different network to achieve the consistent state. When implement the directory synchronization, there are several changes including concurrent writing from multi-nodes, nodes join...

A verification methodology is presented for railway interlocking system which is regarded as a safety-critical system. The methodology utilizes UML to model the function requirement and LTL to verify the safety requirements of the specification. The device specifications of railway interlocking system...

The existing Single Sign-On (SSO) schemes are based on PKI/PMI, WS-Security, Kerberos etc. But they can`t support Trusted Network Connect (TNC). To make up for the shortage, a multi-authentication modes SSO scheme based on TNC named SSO-TNC is proposed. SSO-TNC uses an authentication gateway to realize...

This paper focuses on the basic principles and main components of web server-based construction safety supervision and management. Comparative and analysis of the characteristics and advantages of the system, its application for safety of the construction enterprises in production controlled and the...

As for a kind of ordered state evaluation problem, it is too much feature and big calculation in the process of multiattribute decision making, this paper is aimed to the method of DS-AHP and use the convex function to set up its optimization model. Example of the fire extinguishing systems’ state evaluation...

The halon is usually stored in the sealed highpressure steel containers at liquid state, which can not be detected the liquid level by using the traditional contact-type method. In this paper ultrasonic is used to measure the liquid level which achieved the purpose of nondestructive testing, the model...

This paper presents a detailed description of a direct digital frequency synthesizer(DDFS) using optimized quartet ROMs. The quartet ROMs technology allows improving the system’s working frequency with respect to controllable chip size and beneficial effects on system performances. Such a high-speed...

In order to determine if a given mooring system is globally asymptotically stable, the mooring system is analyzed based on the hybrid system theory. The stability of linear complementarity system is investigated by using the common Lyapunov function approach. A method to find the common Lyapunov function...

Ant colony algorithm is a typical algorithm of swarm intelligence algorithm. This article introduces the recent development of this algorithm both in principles and in applications. From the basic principle of ant colony algorithm, the paper evaluates its future development.

This paper introduces a kind of FFT algorithm design and realization based on the Xilinx IP core . On the analysis of FFT algorithm, Rely on Xilinx Spartan -3A DSP FPGA series as platform, by calling FFT IP core, validating the feasibility and reliability in FFT algorithm medium or lower end FPGA.

The submarine rescue mission is rather difficult with many uncertain factors and other characteristics. The paper use AHP(Analytic Hierarchy Process)and MMEM (man, machine and environment, management) theory to build up safety assessment model ,and then use fusion algorithm of evidence theory to calculate...

Li presents the U-set to improve the algorithm CharSer that can compute a characteristic series from any given polynomial set. We modify the definition of U-set and present a new version of the algorithm IrrCharSer. Examples are given to show that the improvement can avoid the redundant branches of the...

According to the controlling of traditional complex hydraulic servo system is not precise enough, this paper presents an intelligent control method based on brain emotional learning (BEL) model. BEL model simulates the human brain emotional learning process, according to the neurobiology principle which...

A method is proposed to realize projective synchronization in different chaotic systems. The structure of the controllers is designed based on Lyapunov stability theory. Single-mode laser Lorenz system and Rössler system are taken as examples to verify the effectiveness of the proposed method. The method...

Computer simulation of building energy consumption is one of important assisted tools in the field of energy efficiency, architects can easily design process at any stage of the design of energy-saving evaluation by computer simulation, or test can predict the future or existing Building energy consumption,...

For the problem of the instantaneous frequency estimation of multi-component chirp signals, a new method is presented. And the fractional Fourier transform (FrFT) method is applied to estimate instantaneous frequency of multi-component chirp signals. The chirp signal has the feature that different chirp...

Corona discharge which occurs on high voltage equipment has being detected by Ultraviolet (UV) imaging technology for these years. Image processing technique is essential for UV detection. Image registration technique is one of important methods for image processing. It is useful for further pattern...

This article develops tipping-bucket self-recording real-time monitoring system of district soil erosion monitoring and solves the problem of long-term automatic monitoring at fixed point. It adopts the water body measurement method with simple and reliable mechanical structure, with low cost and no...

The mine drainage system undertakes an important task in underground water exclusion, while the traditionally manual system, which has many disadvantages, can not adapt to the mine production and management mode of modern enterprises. Based on the reality of coal production and the trend of modern automatic...

Because of some irrationality of the design, material selection and heat treatment, earlier failure phenomenon often occurs in cold extrusion die. These failure phenomena of cold extrusion dies have been studied and measures to solve the failures are proposed.

When the permanent magnet linear synchronous motor (PMLSM) direct drive system, the system has the characteristics of nonlinear, motor parameter time-variance and vulnerable disturbance, an adaptive sliding mode controller based on neural network is designed. The controller consists of two neural networks,...

In this paper, wavelet packet algorithm was used in the de-noising of underwater acoustic signal processing since wavelet packet algorithm is suitable for non-stationary signal processing. The principle of wavelet packet de-noising algorithm was described and the MSE of underwater acoustic was improved...

Two novel packet structures are proposed based on the FRFT (Fractional Fourier Transform) communication system for different channel. The first packet is designed for the channel of fast change, and it consists of Chirp signal, sine signal and BPSK, which immensely improve the reliability of underwater...

QoS (Quality of Service) constraints_based multicast routing is one of major issues in distributed multimedia on the network. An improved algorithm based CACO (Chaos Ant Colony Optimization) is proposed in this paper for solving some routing problems such as the convergence speed, packet loss rate and...

This paper uses AMESim software to model the hydraulic system in the aerodynamic brake system. First we will have a brief introduction about the hydraulic system to be simulated. Than the hydraulic system is modeled and simulated, the results of the simulations are analyzed.

Pass in the Wang Qing in Jilin province Jingouling forestry station to establish temporary study plot, carried on stem analysis, analysis spruce-fir wildwood growth process, discovered spruce-fir DBH for current annual increment at hit maximum for 50 years and 100 years, respectively is 1.14cm and 1.07cm.Height...

To solve large target RCS accurately and efficiently, based on CFIE (Combined Field Integral Equation), various factors influencing the memory, efficiency are analyzed in detail. Based on this analysis, a high-efficient and simple method used on solving large target RCS is proposed. By improving the...

The Lazy Eight aircraft maneuver is researched through numerical simulation. First, a six DOF aircraft flight dynamics model is developed. To control the aircraft performing the maneuver, a basic flight control law is designed, employing classical PID controllers in both pitch and roll loop. Commands...

The paper discusses practical stability and strict practical stability of differential equation on ring neighborhood by means of Lyapunov function. The paper develops (h0 ,h) practical stability by employing two auxiliary functions and using comparative method. Some criteria and results which are used...

Embedded computers have become pervasive and complex. This approach entails at least three serious consequences: firstly, profligate and rigid usage of resources necessitated by the binding of subsystems to hardware platforms; secondly, significantly more difficult system integration because individually...

In the thesis, the author proposes an approach of image processing based on the features of medical image. First, using the space domain to enhance the image and improve clarity. And then process it by using mathematical morphology. Mathematical morphology is a method of nonlinear filters, which could...

The measuring model based on Bi-satellite as well as optical and radar measure was presented; and then the sparse parameter estimation model and the corresponding estimation algorithm and calculation step for exterior ballistic trajectory based on semi-parameter regression model was established. Moreover...

This article provides a saturation throughput analysis of IEEE 802.11n when Block-ACK is adopted. In contrast to the previous models, our model gives more accurate results owing to taking into account the freezing of backoff counter and anomalous slots. Simulation results show the accuracy of our model.

DCF adopts a binary backoff procedure in order to avoid the further collision. In a real wireless channel, both a channel bit error and a collision can cause a data frame loss. However, DCF always assumes that a data frame loss is due to the collision. In fact, a channel bit error should not cause the...

In IEEE 802.16e (WiMAX), each data burst consists of multiple MPDUs. The MPDUs of one data burst are distinguished from each other according to the generic MAC header (GMH). The GMH contains the length information of MPDU. If the GMH is damaged, it doesn’t know what’s end of the MPDU. As a result, the...

In a real wireless channel, both a channel bit error and a collision between competition stations can cause a data frame loss. Moreover, DCF always assumes that a data frame loss is due to the collision and the contention window will double in next transmission. In fact, we think that the contention...

According to the application of ultrasonic in wind speed, flow and liquid level measurement, a method about distinguishing ultrasonic signal waveform starting point was introduced. The high-powered DSP chip was chosen as the system's processor. The IIR band-pass digital filter was designed to eliminate...

People are accustomed to using mobile Internet for browsing, chat, handling documents and emails to replace single GPS, MP3 and MP4. As the most portable personal information terminal, smart phone is undoubtedly the most intimate digital product. As different mobile phone operating systems have different...

The tank detection display system is an basic component of the tank integrated simulator. This paper describes the design process of virtual instrument for tank integrated simulator based on LabWindows/CVI. The hardware architecture and diagrams of system are introduced first. The software module architecture...

With the increasing amount of vehicles and traffic accidents, the current situation of transport safety is pessimistic. The research of drivers’ actions is hot spot. It introduces the basic contents of driver’s decision and the utility theory. Dividing the driver’s decision into four layers and using...

Image saliency plays an important role in image processing and recognizing tasks. Owing to color difference computation between the patch centered at the current pixel and the patches centered at its neighboring pixels, a fast algorithm for multi-scale content-aware saliency detection is presented in...

PoC is a part of the IP Multimedia Subsystem service, and provides one to one and group call through a halfduplex VoIP technology. The Group List Management Server (GLMS) in PoC is the auxiliary functional entity to provide services for the PoC contact list management, group list management, etc group...

This paper deals with the drive-response type synchronization of delayed reaction-diffusion neural networks with Markovian jumping parameters. In terms of linear matrix inequalities, a sufficient condition is proposed to ensure the drive system and the response system to be stochastically synchronized....

In this paper, an improved object tracking algorithm based on Camshift and grey prediction model GM (1.1) was proposed to solve problem of the poor tracking ability in occlusions. The whole tracking system could be divided into three parts: the occlusions identifying system based on Bhattacharyya coefficient...

UWB signals are very suitable for localization, since their high time resolution can provide precise time of arrival (TOA) estimation. However, a major challenge in UWB signal processing is the requirement for high sampling rate. The theory of compressive sensing (CS) makes processing UWB signal at a...

Most of existing spectrum allocation algorithms for cognitive radio network are based on continuous spectrum assignment and the user demands are not considered. For this reason, many small spectrum fragments that are smaller than the user demands are generated and these spectrum fragments can’t be fully...

The projective synchronization between the different chaotic systems is investigated based on the Lyapunov stability theory. The nonlinear feedback controllers are designed through constructing a Lyapunov function. The chaotic systems are synchronized by adjusting the feedback gain coefficients. This...

The trajectory tracking control of a quad-rotor UAV is discussed in this paper. Firstly, establish the system model by the Eula-Lagrange method. Decompound the system as the position and attitude subsystem, respectively. The backstepping approach based calculation method is proposed to obtain the expected...

The low-rate denial of service (LDoS) attack is a new threat to Internet security. Due to its low rate and high concealment characteristics, LDoS attack is difficult to be detected through the analysis of attack flow directly. Most present methods primarily analysis network traffic or feature of LDoS...

In the paper, it is introduced that the design of a power quality monitoring system based on LabVIEW for factory power quality, with LabVIEW as development platform, composed by some functional modules such as data acquisition, data processing, data storage, and data report, etc. and making an access...

Based on the control requirement for high speed of the electronic pattern sewing machine, the architecture of open control system, in which based on an ARM embedded system is used for human machine interface and other nonreal-time tasks and motion controller is used for servo control and logic control...

The error accumulation is currently working procedure dimension chain, an important problem in the increasing of the error will reduce production speed and increase production cost. Traditional mode of production in production efficiency and production cost above tend to attend. This paper using Simulated...

Wavelet neural network (WNN) is introduced into the field of image restoration due to the excellent local feature and adaptive ability. The procedure of restoration can be looked as an approximating procedure from noisy image to original image. The better WNN has approximation performance, the better...

In this paper, by using the improved fingerprint pattern, the fingerprint preprocessing effect of using Gabor filtering have been effectively improved. Then, by combining the advantages of the direction-based binarization algorithm and the local threshold algorithm, this paper can effectively get the...

In this paper, we will do some researches on the relationship between action sequence and system efficiency in multi-agent system. Usually, when an agent gets a task, it will calculate all the feasible action sequences and choose the best one whether the task has used to appeared in this system before....

The daylighting system of new intelligent building applies an automatic control system based on DSP and FPGA. It adjusts optical paths accordingly with the angle direction of various optical system arrays, collecting as much solar energy as possible and transferring it efficiently to each room in need,...

Coexistence and interoperability between 20MHz and 40MHz device and modes of operation are addressed in standard IEEE802.11n system. It is mandate to give the channel state in receiving processing, since for 40MHz device and modes for it should not only fulfill the single 20MHz signal but also 40MHz...

Based on dynamic binary platform, an analysis method for buffer overflow is described in detail and a prototype system is implemented. Overflow detection based on exception capture, control flow analysis, and memory status checks is implemented according to the principle of buffer overflow exploits....

Poor visibility brings the safety issues to the automobile running on highway in fog weather. The research of vehicle distance measurement system can help driver better estimate the distance between the car and the car in front and make opportune anti-collision action even in poor visibility. Firstly,...

According to the basic principle of the Screw-driven, a new mechanism named rolling screw transform mechanism is designed in this paper, which is input straight reciprocating motion and output rotation. The motion performance and of the mechanism is analyzed, the motion equations, such as displacement,...

To meet the public security and criminal investigation requirement, this paper studies detecting and tracking of human motion through related theories on image processing and pattern recognition. The video information is obtained from video monitoring system (VMS). Background modeling is based on mixture...

Nearest Feature Line (NFL) is a convenient and effective way to search in video database, but the Framework does not address the feature extraction for dimension reduction. In this paper, a novel method is proposed for content-based shot retrieval. Karhunen Loeve Transform (KLT) is used to reduce dimensionality...

In order to meet the request of fast access of power system simulation software base on Oracle, two methods based on OCI (Oracle Class Interface) technology are presented in this paper. The method of Binding array is used for reading data and the method of direct path load is used for writing Oracle...

Environmental states retrieving is the major issue in the implementation of action-based access control model. In this paper, the environmental states retrieving mechanism based on ABAC (Action-Based Access Control) was proposed. Then, the architecture of network location detector was presented, and...

Wireless sensor networks (WSN) are a new selforganizing network as a kind of military applications by RF wireless communications, so its security is very important. Intrusion detection system always be deployed at each node in previous research in defense mechanism in WSN, and it will produce great energy...

Numerical tests on three-dimensional rock samples containing hole were carried out with finite element software ANSYS to investigate the mechanism of zonal disintegration within surrounding rockmass around deep circular tunnel under dynamic disturbance. Numerical tests presented the distribution of stress...

As a widely used finite difference software in coal mine research, FLAC3D is applied with to simulate the deforming course of coal body around spraying hole induced by waterpower. The results are appealing and instructive for optimization of gas drainage holes in outburst mine. Two core simulating distribution...

In this paper, the diffusion process of China's 3G users is researched based on the Bass model. The parameters of the Bass model are estimated with the recent number of 3G users. By the diffusion of the future 3G users simulated, the trends of 3G market in the next few years is predict, to look forward...

When varying degrees defects existing in the anchorage system, energy decreasing and frequency mutation can be caused during the acoustic waves propagation. We can get the instantaneous frequency of the signal by processing the analysis of anchor bolt testing signal using the method of HHT (Hilbert-Huang...

Artifacts such as eye movements, muscle, electrocardiogram (EKG) and line noise may cause severe contamination in Electroencephalogram (EEG). The independent component analysis (ICA) is the general method to remove the artifacts within electroencephalographic traces. Desired bands in specific EEG analysis,...

Dedicated Short-Range Communication (DSRC) technology has various applications, such as Intelligent transport systems (ITS), Electronic toll collection (ETC) and Camel-Vehicle-Accident-Avoiding-System (CVAAS), etc.. The ETC has been used in many countries, such as USA, Malaysia, Thailand and Japan [9]....

Inspired by the Chinese game “Weiqi”, this paper proposes a Quasi-Human stochastic Growth Algorithm (QHGA) for the Simple Cubic Hydrophobic Polar (SC-HP) lattice model of the protein folding problem. Two concepts from the “Weiqi”, the actual gain and the external potential, are used to evaluate different...

Abstract state machine, AsmL, Computer generated forces, Behavior

Quantizing Error during the process of JPEG compression is analyzed, and a new information hiding algorithm is proposed based on Quantizing Error of JPEG image. Experimental results show that the proposed algorithm can provide a high capacity information hiding and keep the visual quality well, also...

Aiming at the special conditions that it is very difficult to measure precisely and continuously by the traditional level measurement. This paper designed the linear frequency modulation continuous wave radar level measurement system base on SOPC. The paper introduced the overall design of the system,...

This paper presents a comparison of wheelbase filtering effect and suspension tuning between two-axle and triaxle vehicle. Interference angle, introduced to account for the conflict between bouncing motion and pitching motion, is used to study the responses of the tri-axle vehicle. Olley tuning, the...

In this paper, a suspension with spring and Hydraulic shock absorber model is presented with AMESim software. Hydraulic shock absorber model contains piston valve assembly, bottom valve assembly, rebound chamber, compression chamber, reserve chamber and so on. Then the optimal parameters of the Hydr-aulic...

This paper presents a detailed model of a hydraulic shock absorber. The detailed structure includes in the model, such as the deflection of valve which deforms in the oil, the contact between the superposition valves et al. The FEM is used to solve the valve deflection problem. The difference between...

Genetic Algorithms uses the population selection technology, newer population is generated from current population by cross, mutation and other genetic operations, and gradually make the population to evolve the optimization result. Compared with traditional optimization methods, Genetic Algorithm has...

In traditional recognition system of license plate, the problem is the low recognition rate caused by inaccurate segmentation. This paper proposes a novel adaptive edge detection segmentation algorithm based on first-order differential operator to solve this problem, it can detect the edge of object...

The performance of door assembly is very significant for the vehicle design. In the present paper, the finite element method is used in the development processes of the door assembly. The stiffness, strength, modal characteristic and anti-extrusion of a newly developed passenger vehicle door assembly...

Discover frequent itemsets is the key problem of mining association rules, and the expenditure of this process is high. So, the research of incremental updating algorithms is particular important. This paper presents a comprehensive study on the performance of incremental updating algorithms that currently...

The overall planning of aircraft digital design platform is proposed concerning the problems and difficulties in construction of the platform. The general mentality of constructing total solution of aircraft digital design platform is presented. The combing method of aircraft digital research and development...

The bi-level decision making system involves two optimization decision problems. The target value of the upper level decision problem is implicitly determined by the solution of the lower problem. In This paper discusses the sensitivity analysis of bi-level linear programming while the value coefficients...

This paper presented the process of using a function of the parametric design and assembly modes of UG software to realize the parametric design and modeling for the yaw bearing. The built 3-dimension model was imported into ANSYS. A new method was used to find the precisely loading position. Finally,...

With the development of electronic technology, the cooling of the electronic devices, especially for high-power semiconductor, becomes more and more important. The aircooled technology is gradually replaced by the water-cooled technology with the excellent cooling ability. This paper simulates the flow...

Sliding yaw bearing works in the complex environment with large load range, so its dynamic analysis is very important. The modal analysis of sliding yaw bearing is not only an effective method for analyzing sliding yaw bearing’s dynamic characteristics, but also the basis of the dynamic respond analysis....

The start control strategy is the key technology of the AMT, and the hill start control is the very difficult for the AMT control. This paper presents the research on hill start control for the heavy truck with the AMT. The model was built with Matlab/Simulink, and the simulation was carried out to study...

In the predictive control, it is often need to obtain the model which prediction accuracy is possible higher, however, in practice controlled objects are often exist nonlinear, parameter variation, model mismatch, disturbance and other factors, there is a big error between the controlled object-based...

For the factor of aircraft flying safety, some critical flight parameters must be limited within the envelop borders. However, excellent flight performance requires that the aircraft can flight to some envelop borders easily and fast nearly. The purpose of envelop protection is to solve this dilemma....