Lunar exploration data of Chang'e-3 is collected using two measurement & control stations 60 kilometers apart. The data is synthesized by Sumple algorithm and simulation experiments are carried out using Matlab. The synthetic efficiency is higher than 90%, which verifies the applicability of the composition...

The Sharp Cusa-Huygens inequality involving the generalized trigonometric functions are established.

IGBTs modules have the characteristics widely used in industry, electric power, smart grid and other fields. But the IGBTs modules in the current working state, the device performance and reliability are facing severe challenges. This paper provides a new design of forming hole current bypass and integrated...

IGBT chips are basic structure of power electronic devices in the power grid system. The IGBT module with high current capability needs multi chips parallel connection. Because there are different performance parameters of the IGBT chips in the Wafer, it is necessary to select the parameters of the IGBT...

The study of dynamic trust measurement is a hot spot in the current field of trusted computing. In this paper, aiming at the shortcomings of the chain in the trusted measurement model, we try to dynamically measure the data security of the current entity with the extension of the data check on the trusted...

Based on Online Charging System in one communication operator, the paper analyses some reasons for low online rate of General Packet Radio Service (GPRS) in this system. It is out of balance load and has low resource utilization. Some optimization schemes are proposed in this paper. It optimizes the...

Fire image detection is a kind of important means of early prevention of fire, which has important application value in the important energy base in the island, harbor or other large space. The current fire image detection is focus on the feature extraction, the concrete algorithm, etc., but fire detection...

In this paper, a new scheme is presented. This scheme is based on Advanced Marking Scheme (AMS), and it works with Autonomous System (AS). In autonomous systems, routers are divided into two categories-borders- routers and internal routers. It can reduce the number of routers involved in marking and...

On the purpose of radar operators ability improving, for a man-in-the-loop training system a radar interaction training logic (RITL) model is proposed obeying the entity-action-task-interaction (EATI) military concept modeling rules. The radar interactive training space in RITL model consists of entities,...

Based on the analysis of the group signature scheme based on the Chinese remainder theorem, it is found that the existing schemes have shortcomings in anti fake, anti- frame, anti - joint attacks and non - connection. Tthis paper puts forward an improved group signature scheme that apply RSA signature...

For the blind recognition problem of convoluntional code, a new method based on simulated annealing algorithm is proposed. Firstly, the mathematical model is given based on code features. Then the basic principle and realization process is described in details, also the method to choose parameters is...

In the visual development environment, skilled call API and DLL function, combined with the Windows system kernel, in order to make the user experience Windows API function programming ability strong. In this paper, we first introduce the DLL library and API function about the basic knowledge, followed...

With the rapid development of technology, intelligent mobile phone hardware performance improving. Meanwhile, the openness of Android system is also conducive to the development of software.Therefore this paper proposes a elevator overspeed governor speed measuring system based on Android Smartphone,...

ID3 algorithm is one of the most important algorithm of decision tree classification method, Because of its simple, easy to implement, has been widely applied in various fields. Based on introducing the basic principle of ID3 algorithm, this paper has deeply analyzed the practical application of ID3...

It is observed that oil and gas reserviors exhibit high seismic wave attenuation. Through extracting the attenuation of seismic wave can detect oil and gas. On the basis of Biot's poroelastic theory, through formula derivation and analysis, we proposed a hydrocarbon detection method based on dual-phase...

Based on the study of radial magnetized magnetic gears of permanent magnet synchronous motor, put forward a new type of Halbach magnetic composite gear motor to improve the efficiency of the composite motor driving system. Build finite element analysis model, based on the analysis of the distribution...

With the development of computer technology, communication technology, automatic control technology, life and production management more intelligence and information . The design of intelligent warehouse consists of three parts, the entrance guard control, the temperature and humidity control, the fire...

With the increasing huge amounts of data, there is a high requirement on the electricity information acquisition system. In this paper, a platform for the electricity information collection system is proposed to solve the problems in the current electricity network by employing the cloud computing technology....

In this paper, we present an efficient soft de-mapping method for M-ary APSK modulation based on hard decision thresholds (HDT), which significantly reduces the computational complexity compared with the maximum likelihood detection (MLD). Furthermore, bit error rate (BER) performance of several soft...

In recent year, the Direct Sequence Spread Spectrum (DSSS) technology has been introduced as an attractive approach to guarantee anti-interference capability in satellite communication system. However, due to the limitation of the DSSS, the system performance has been greatly deteriorated while a strong...

Brand reflects the comprehensive competitiveness of an enterprise and even a country. Brand value evaluation is a very important work in every country. There are three perspectives, namely financial affairs, brand based market power and consumers. We made a comparison of the three perspectives. We put...

Failure Mode Effect and Critically Analysis(FMECA) is one of the key technologies in testability verification test that based on plenty of failure samples.Line replaceable module(LRM) is the core of the new generation avionics system and military equipment electronic system. Failure data of LRM is difficult...

B‚zier curve is one of typical nonlinear splines, which is of importance for geometric representation, such as edge, contour. Generally, all control points are dealt with based on the same blending functions, regardless of the effect of every independent coordinates on geometric shape. Therefore, current...

With the rapid development of computer science and image processing technology, 3D reconstruction and measurement of surface based on computer vision have become a research trends. However,for the weak texture surface,it is difficult to extract enough key points through general corner detection algorithms....

Future electric cars (plug-in electric vehicle, PEV) large-scale access, will bring to power system planning and operation can not be ignored.This article first introduces the research status of electric vehicles, including its development scale, technical characteristics and power supply mode, and points...

Genetic algorithms are typical swarm intelligence techniques based on the mechanics of natural selection and natural genetics , which combines artificial survival of the fittest concept with genetic operations abstracted from nature. Since the genetic algorithm has good global search capability, as well...

In navigation system, due to the long distance between earth and satellites, the external environment noise may affect the service quality of information transmission system. To improve the capacity of anti-jam satellite communications, in this paper, an efficient construction algorithm for Q-ary LDPC...

During the production process of metal hydrometallurgical based on the Multi-objective Level Balance Control System, advantages such as ensure the production, improve production efficiency, reduce the cost can be made if the level can self-balancing. This paper around the problem of the level balance...

Carrier aggregation (CA) technique is introduced by 3GPP to support higher data rate transmissions over up to 100 MHz frequency bandwidths in LTE-Advanced (LTE-A) systems. However, the use of CA brings new challenges to radio resource management (RRM). In this paper, we propose RRM algorithms, involving...

It was the base of the model which accurately determined the relationship of each part of the armament system combat capability simulation model. In this paper, structural equation modeling method (SEM) was used to determine relationships between the various components of the armament combat capability...

Carrier phase often suddenly change while receiver PLL unlock at PSK modulation communication system, it lead to likelihood information sequence which input of LDPC decoder not accurate and decode fail. This paper analyzed the regularity of LLR information after Cycle-Slip happened and combine with MS...

Current studies demonstrate that cooperative communication between secondary users (SUs) can improve spectrum diversity in cognitive radio (CR) networks. However, any selfish SU in decentralized networks will not help other SU relay information with its otherwise wasted spectrum holes for nothing because...

In this paper, we study the problem of joint relay selection and power allocation in a cognitive radio (CR) network. Different from conventional algorithms that only aim at maximizing source node utility, we also take into account the utility of the SU which acts as the relay. On the premise of meeting...

A method of operational effectiveness analysis for aerocraft is proposed based on L1 regularized logistic model, for the problem of the operational effectiveness index is not easy to quantify analysis .The operational effectiveness of aerocraft is affected by many factors which relationship are complex,...

Internet users tend to have a number of different types of Internet accounts, and yet there does not exist a perfect Internet account association approach. The telecom network operators use DPI technology can detect the part of user's Internet records, which makes it possible to realize the connection...

In order to realize the automation of factory transport materials, improve the automation level and production efficiency of factories and enterprises, the factory intelligent AGV based on electromagnetic guided was designed and developed. This factory intelligent AGV has tracking guide, RFID communication,...

As the development of economic construction, China has paid more and more attention to electrical energy, especially in the requirement and development of clean energy. Wind power, as a supplying channel of clean energy, has been developing rapidly in China's coastal waters recently. However, with the...

as one of the important means to solve rural energy and environmental problem, construction of rural household biogas is of great significance to promoting rural sustainable development and socialist new countryside construction. In USA, Greece, Sweden and some developing countries, it is extensively...

With the development of CMOS technology, the integration and miniaturization have become the trend of electronic devices. This paper proposes a scheme of system on chip (SoC) that realizes the monolithic integration of the intermediate frequency digital receiver based on CMOS technology, which integrates...

Large IP Telephone system may contain multiple domains, and the delay of DNS query across domains may be large. In this paper, the efficiency of call routing in multi-domain SIP system is improved by employing P2P technology. The P2P-SIP system architecture is designed and a no-worse-than-two-hop query...

The bus route search algorithm is the key technical problem of bus route query system. This paper analyses the basic needs of passengers and design requirements of the transfer algorithm, and analyses the realization conditions and influence factors for effective running. It introduces the shortest path...

In order to improve productivity and to solve the Potential shortage of skilled workers in polishing manufacturing, a new type multi-station rotary polishing robot was proposed. This robot mechanical structure was discussed in some detail. The kinematics of this robot was analyzed and the approximate...

This paper describes the realization of a system capable of tracking objects. The whole system design includes lower control system design and upper control system design. The rotation of the camera was controlled by an MCU in the lower control system and the tracking algorithm mean-shift was performed...

To the problem of poor efficiency and low accuracy of building reconstruction method, an automatic building reconstruction method from airborne LiDAR point clouds and building outline from GIS maps is proposed. This article discusses the key steps of building reconstruction such as the buildings extraction,...

For underground wireless sensor networks with limited energy problem, this paper proposes a method based on AP cluster head routing protocol (EDAP). By computing energy consumption between both node to node and note to sink node, get the competition degrees W that is a cluster basis. Use the W to select...

In this paper, we consider the very deep multi-stage two-stream convolutional neural network for action recognition in videos. The challenge of action recognition is to capture the appearance and motion information to describe various actions efficiently and to classify different levels of difficult...

Medical image registration is a very important technology in the field of medical image fusion, in order to meet the needs of clinical diagnosis and treatment. This paper presents a registration method of medical images based on contour features and multi-scale information. First, the resample operator...

An alcohol concentration detector based on STC89C52 is presented. The detector, adopting a single chip microcomputer, STC89C52, as its controlling unit, collects samples of alcohol concentration via a gas sensor MQ3 and ambient temperature via a temperature sensor DS18B20, displays the results on an...

Aiming at the shortcoming that the calculation of the gray relational coefficient is influenced by the number of schemes and distinguishing coefficient, which causes inconsistency of the evaluation results in the traditional gray relational degree, an effectiveness evaluation method is proposed, which...

By comparing the existing casting defects diagnosis methods, a set of .NET-based casting defects expert system has been developed which analyzes the causes and countermeasures. By storing the defect classification knowledge, coding defects in the SQL database, and using guide form programmed in .NET...

This paper designs a low-complexity decoder based on LDPC of GPS standards.In the design ,the decoder we only uses a CNU(Check Node Unit) in the decoding process,which reduce the hardware sources effectively.Besides,we decreases the decoding complexity through the check matrix equivalence transformation,At...

In a hostile environment, it is important for avoiding the threat of ground radar and ground air defense missile. So, in the airlines planning process these are some factors to be studied carefully, such as the terrain, ground radar and anti-aircraft missiles and other factors. Firstly, it is important...

Firstly, the definition and implication of virtual learning communities (VLCs) are introduced, then the research on definition, dimension and process of participation of VLC members and their continued involvement are presented. Finally, based on the review of literatures about VLCs, we analyzed the...

The paper considers a Betrand model with incomplete information. Two strategies with price adjustment are mainly discussed: the tit-for-tat strategy and the tit-for-tat strategy with cooperative intention and their dynamic systems respectively.

We propose a method of automatic news topic detection in large-scale data. First, topic words are detected based on their word entropy. Then, the topic word co-occurrence net is constructed via the semantic relationships of topic words represented by their orders in which they appear within the original...

"Nanchang-Jiujiang Integration" is an important development strategy in Jiangxi Province. This paper embarks from the perspective of promoting regional economic integration, and takes time-distance for an index, and quantitative analysis the highway traffic accessibility in Nanchang-Jiujiang region from...

In many real-world video-based face recognition scenarios, videos are usually captured under unconstrained conditions. It is very challenging because of low face resolutions, varying head pose and complex lighting. To address this issue, we present a new method by formulating the video-based face recognition...

The optimization of minesweeping magnetic field plays an important role in the minesweeping operation which is concerned with magnetic minesweeping gear. In order to analyze the factors which influence the working efficiency of the mine sweeping gear, a magnetic field dipole model is established according...

During the using of 3D mesh, the different LOD meshes are needed for a same model. This paper presents an algorithm of 3D mesh reconstructing based on the rendering pipeline. This algorithm bases the pipeline, performs the coordinate transform and records the original coordinates of the mesh during the...

The road network environment, Top-k query algorithm of spatial object query efficiency is a measure of the important indicators of query performance. Because in the practical application of query location is often mobile, using the traditional snapshot query to deal with the efficiency of mobile query...

The maritime right of our country faces severe situation, there is complicated work of marine delimitation between peripheral marine countries and our country, the research on marine delimitation technology using of information technology is an important task. This paper has analyzed the urgency and...

The estimation of number of remaining mines is an important basis for the performance evaluation of naval minesweeping, and the accuracy of the estimation is related to the mastery of prior information and the selection of evaluation model. In this paper, we build the evaluation models by employing Markov...

In minesweeping operations, it is difficult to get optimum sweeping width due to complicated magnetic field distribution. Therefore the main work in this dissertation is to find a method to analyze the characteristics of magnetic field and key factors which can affect minesweeping width. First, the distribution...

The structure of 5-UPS/PRPU redundant parallel manipulator is introduced. The degree of freedom and redundant type of this manipulator is analyzed. And, the dynamic equations of five UPS branches and a PRPU branch are established with Lagrange Method. This study provides theoretical basis for the control...

During the rapid development of the network, this is very important that the system is security.we should will be thinking about the problem ,it is the system's first line of security . How do we protect and build it? In this paper, we introduce about Kerberos authentication and certification process;...

The transonic axial compressor Stage35 was selected as a research object, using software NUMECA taking numerical simulation of it. And then, the distribution rules of pressure and temperature of meridional channel and blade surface are derived. On this basis, the formation process of shock wave and the...

The intention of this paper is to explore the dynamic behavior of hard-disk disk. In this paper, the modal analysis of hard-disk disk simulated by ANSYS and the vibration and the resonance behavior are introduced .The results of this research could provide engineers with useful information to understand...

To study deposited Ni-W alloy on electronic level, empirical electron theory of solids and molecules (EET) was used to calculate valence electron structures (VES). In addition, high-resolution transmission electron microscope (TEM) was used to identify crystal features. Regular arrangement exists according...

This paper introduced an automatic handling system. It composed of mechanical structure, electrical control system. The mechanical structure including frame body, moving car, hydraulic system. It can achieve horizontal moving, up and down moving, clamping, loosen. According to the working requirements,...

Design content includes the choice of controller, design of external wiring, design of PLC programming. According to the movement process, write PLC program. The program has four components, the initialization program, the manual operation program, the automatic return to the origin program, and automatic...

In order to increase the efficiency of system dynamic modeling and simulation, the order reduction method of system dynamic equations based on vector bond graph is proposed. Based on system independent energy storage field, resistive field, source field and junction structure, the different unified formula...

In this paper the problems is analyzed, that the phenomenon of burning crops straw, although it is prohibited times without number, and which causing serious air pollution are a great deal of occurrences in recent years in rural area. It points out that one of the main reasons is lacking efficient machine...

The biconical shaped charge liner serves as the main part to constitute the armour-piercing projectile and its dimensional precision is mainly affected by the spinning force. Excessive spinning force will cause the increase in feed amount of spinning roller and then raise the surface roughness of the...

For the computing method of conventional spinning force sometimes has a great error by neglecting deposit metal before roller, this essay proposed a spinning force calculation method based on cut and curving force, and it is analyzed an effective and accurate way by testing a set of craft experiments....

Soluble medical dressing can form gel on the wound surface, which can keep the wound wet and promote wound healing. In this work, carboxymethyl cellulose (CMC) gauze embedded with silver nanoparticles (AgNPs) was prepared via in situ reduction of Ag+-CMC gauze in the presence of reducing reagent and...

Previous studies have shown that the executive components and control components have great impacts on dynamic characteristics of a hydraulic system, while the impacts of auxiliary components in a hydraulic system are often deemed as less important. In this paper, the influence of the pipeline between...

The existence of a large number of distributed heterogeneous data sources, to access betweent application systems brings much inconvenience.OGSA-DAI middleware simplifies the date access and integration in the grid environment. This paper focusing on the innermechanism of OGSA-DAI, describes its architecture,...

Probe calibration is carried out under specific conditions; most of the error caused by the change of speed parameter has not been corrected, In order to reduce the measuring error influence on measurement accuracy, analyze the relationship between speed parameter and probe error, and using Bayesian...

The cold stamping forming processes of the car beam left/right section were designed and analyzed using the CAD/CAE technology and related software. Based on the establishment of the numerical model for the car beam left/right section, the stamping processes of the product were determined through the...

Springback is a kind of formation defect in punch machining. It can be decreased by adjusting the processing parameters. In this paper it put forward to optimize the parameters with response surface method. Firstly it built an artificial neural network for mapping the relation between the parameters...

Springback is a kind of typical defect in sheet metal punching. Although it could be resolved with mould surface modification, it is inefficient with traditional method. In this paper, a new method of mould surface modification was proposed. The new method converted the traditional method into an optimization...

The less volatile impurities has been eliminated by high temperature vacuum distillation of crude indium. The experiment was carried out in a self-designed vacuum distillation furnace. The temperature of distillation experiment was carried out at 1273~1373K and samples of condensate were collected at...

Coal ash as flame retardant was used to flexible poly (vinyl chloride) (PVC), and the flame retardant and smoke suppressant properties of PVC were investigated by the limiting oxygen index, smoke density rating, and cone calorimeter tests (CONE), the thermal degradation behaviors of PVC were studied...

Expanded graphite (EG) was used as a flame retardant and mixed with the flexible polyurethane foam (FPUF). The effects of EG on flame retardant properties of FPUF were studied by limiting oxygen index(LOI), rate of heat release (RHR), total heat release (THR), total mass loss (TML) and mass loss rate...

Aimed at the same bearing in the same condition will appear different failure modes for single bearing performance degradation evaluation, this paper puts forward a new performance degradation assessment method based on contact stress and deformation , which based on the Hertz's point contact theory...

Crowning roller is widely applied in industrial applications today, large to the transmission system of the heavy body, small to the bearing parts.Crown roller with crown in order to eliminate the edge stress concentration phenomenon, so as to improve the service life of roller bearings. In this paper,...

Gangue as flame retardant was used to flexible poly (vinyl chloride) (PVC), and the flame retardant properties of PVC were investigated by the limiting oxygen index, and cone calorimeter tests (CONE). The CONE result indicated that the rate of heat release (HRR) and total heat release (THR) of PVC treated...

Montmorillonite as flame retardant was used to flexible poly (vinyl chloride) (PVC), and the flame retardant and smoke suppressant properties of PVC were investigated by the limiting oxygen index, smoke density rating, and cone calorimeter tests (CONE), the thermal degradation behaviors of PVC were studied...

The main work of this thesis is to study and discuss flame retardant properties of the flexible polyurethane foam (FPUF) added with borax as flame retardant. The flammability parameters, including limiting oxygen index(LOI), rate of heat release (RHR), total heat release (THR), total mass loss (TML)...

Wood was treated with guanyl urea phosphate (GUP) to impart flame retardant. The flame retarding behavior of samples was valued by cone calorimeter and thermalgravimetric analysis. The flammability parameters, including rate of heat release (RHR), total heat release (THR), total mass loss (TML) and mass...

Potassium perfluorobutane sulfonate (PPFBS) was used to impart flame retardancy to polycarbonate (PC). The thermal properties of of the PC/PPFBS composites were studied by limiting oxygen index (LOI), vertical burning test (UL-94), TG, and scanning electron microscopy (SEM). The results showed that PC/1wt.%...

Complex of cell-THPC-thiourea-ADP with lanthanide metal ions Gd3+ has been prepared. The thermal stability and smoke suspension of the samples are determined by TG, DTA and cone calorimetry. Experimental data show that for the complexes of cell-THPC-thiourea-ADP with the metal ions, thermal decomposition...

The effect of electric fields on the aging phase transformation of Al-Zn-Mg-Cu alloys is investigated with the first-principles method combined with vacancy mechanism. The effects of external electric intensity on aging phase transformation are analyzed. Results show that during aging in an applied electric...

In order to solve the problems of the inaccuracy of node-flow distribution in the hydraulic model of water supply pipe network, a better method to distribute node-flow was presented. The node-flow is consisted of marketing node-flow and non-revenue water. The marketing node-flow was confirmed by the...

When the raw data has greater volatility, alone using GM (1, 1) model can lead to big error of water demand prediction results. For this problem, based on the grey GM (1, 1) model and Markov model theory and combine the two algorithm to constitute a grey Markov model which is reasonable and applied to...

On the basis of introducing Adaptive Filter Theory, this essay analyzes the stability and inductive spectrum of traditional parallel structure Fx-LMS calculation and carries out a modified parallel structure multi-frequency Fx-LMS calculation of signal processing filter with errors. Damping vibration...

Parallel structure's dual-frequency Fx-LMS calculation of signal filter with is introduced by having emulation analysis of active vibration control system in single -input and single-output way as well as four-input and two-output way while taking finite element model helicopters as research objects....

Firstly, the control object and the loop of large radar bi-motor servo drive systemis analyzed in detail and the model is given. Then, using the Matlab/simulink simulation software, the system is simulated. At last, the Potter curves and transient response curves of the servo drive system in different...

Using electrolysis method can produce high quality of refined copper, copper cathode plate applied to the electrochemical machining. In order to make the copper cathode in electrolysis with high flatness to ensure distance between cathode and anode plate, so that purity cathode copper higher, is committed...

Using message queue technology in the data exchange of star topology can solve the point-to-point reliable data transmission, it makes the data exchange platform has good expansibility and maintainability, but this existe a problem,that is any local failure may lead to "traffic jam" of central node....