The parameters (such as the permeability and the porosity, etc) that affect the recovery efficiency of oil reservoir have the uncertainties within a certain range, which will bring certain risks to the evaluation on recovery efficiency of the numerical simulation program. According to the analysis of...

Human factor is one of the most important reasons causing runway incursion event happened. On the basis of statistics analyzing the existing research about runway incursion human factor causes, this paper builds a key human factor influencing runway incursion and proposes a process of controllers and...

Control system design of quadrotor helicopters with accurate actuator modeling is an important practical design problem that many previous works did not consider. In particular, most actuators of such vehicles are brushless motors, which are hardly controlled without accurate dynamical models. In order...

With the rapid development of cloud computing, more and more data to be stored in the cloud storage servers. Cloud storage as a new type of storage services, with high scalability, high reliability, low cost, can be accessed anytime and anywhere features, provides a new model for mass data storage management....

Floating raft vibration isolator (FRVI) is widely used in ship system. This study investigated effects of FRVI parameters on the overall performance of vibration isolation. Mechanical model of FRVI was established. Using the theory of admittance transmission power flow was deduced. The influence of FRVI...

The integrated sailing performance is important to the ship design and manufacture. However, it is very hard to be evaluated objectively and reasonably. In this paper the evaluation system of integrated sailing performance of ship’s was built which included seakeeping performance, wave loads, speed and...

Spacecraft docking technology play an important role in the aerospace technology. Due to the spacecraft with variable attitude, so the docking process is complex and variable. Therefore, a comprehensive and systematic study of the spacecraft docking process is very necessary. This paper proposed the...

In this paper, a class of electromagnetic suspension system was investigated. Firstly, according to the Newtonian mechanics principle the forced state of the system was analyzed. The differential equation and the transfer function of the controlled system were deduced based on the system's law of electromagnetic...

Fault diagnostics is to distinguish the current state of the equipment is in normal or abnormal. It can be seen as a problem of multi-class classification. To improve the performance of classification, this paper presents a novel method for fault diagnosis. In this method, we synthetically applied immune...

Hybrid-monohull is a kind of high performance ship which has perfect seakeeping performance and equivalent resistance in calm water of round bilge ships, and it’s most feature is the built-up longitudinal-stabilizing appendage fixed on the bottom of bow. In this paper the hydro-coefficients of bow where...

The working principle of a self-centering, power-driven and external-clamping device is induced. The device is based on self-locking worm and worm wheel and slot-and-crank drive. Its mechanical properties and calculation formula is also given out. After the device being driven by gear motor, output torque...

The working principle of an internal-gripping device of the manipulator based on worm and worm gear and crank-connecting rod drive is introduced. Its mechanical properties and calculation formula is also given out. After the device being driven by gear motor, output torque rotates the worm first and...

This paper introduces how to achieve a Jess-based intelligent diagnosis system of local ventilation in the mine field, analyzes how to add rules engine Jess into the development of intelligent diagnosis system, at the same time, it leads the theory of statistics into the inference engine to achieve the...

The theory of international value is the deepening development and application of Marx’s theory of labor value, and also the basis for revealing the exploitative relationship of international capitalism in the world economic globalization. But so far the major challenges that have been faced by Marx’s...

Honey is a significant product in China’s production, consumption, and export. Determining the competitiveness of China’s honey in international markets is important for understanding honey’s relative position in China’s agriculture and the development for its agribusiness firms. The objective of this...

Fractal dimension is usually an effective approach that used to describe the nonregular geometry objects in the nature and nonlinear systems. We investigate the fractal characteristics of well logging curves acquired from Liaohe oil field, China. To calculate the fractal dimension of well logging curves,...

In order to research the basic vibration characteristics of automobile, thus enhance the NVH characteristics for the improvement the comfort of occupants. The finite element model of car ceiling has been established and the modal analysis technology has been used , the effect of structural parameters...

Using the finite element modal analysis technology, Noise, Vibration and Harshness (NVH) characteristics of car tires were analyzed. Through the establishment of finite element model of tire structure, the modal analysis and harmonic response analysis have been carried. From the the modal analysis results...

The non-contact 3D surface measurement theory and CAD technology integration, the reverse engineering means can be three-dimensional entity model accurately obtain irregular products. Application of reverse engineering method to establish CAD model and suitable to finite element analysis, the shape and...

With the development of rapid prototyping technology and computer technology, the rapid molding technology and the computer technology is more and more close. Based on the model of 3D data field capture, then according to the software conversion of STL format entity triangulation of 3D data and stratification,...

Optimization of hyperlens structure and composition of materials is a key problem for its application in biological imaging and nanometer lithography. This paper systematically optimizes and analyzes overall structure of the curved multilayer hyperlens. The influences of structure parameters, such as...

We numerically simulate a directional coupler based on hybrid SNIMS (semiconductor-nanowire-insulator-metal strip) plasmonic waveguide using COMSOL. The distributions of electromagnetic field and longitudinal energy flux density when only fundamental mode propagates in waveguides are analyzed. The dependences...

For the construction of the diversion tunnel discharge capacity problem, the difference of the starting point between the theory of uncertainty and the traditional deterministic theory is analyzed. The discharge capacity is affected by a comprehensive variety of factors, including the cross section area,...

Mold failure usually starts from the surface. The mold life expectancy can be effectively extended by improving the surface properties and performance of the mold. Laser cladding technology is a new type of materials processing and surface modification technology. Because the advantages of cladding surface...

To investigate the backlash phenomenon vibration and noise of a gear transmission system, we compared the performance of two difference types of mechanical transmission performance system: worm gears reducer (DYNABOX) and planetary gear reducer (APEX). We analyzed two kinds of models and harmonic response...

In order to study the corn combine harvester hydraulic drive system, the hydraulic system was designed, which mainly consists of two valve blocks, eight branch circuits and other components, mainly for cutting device, snapping roll device, raking and conveying device, Transverse transport device, husker...

In order to study the automatic door systems of factory workshop, and attain low cost and high reliability requirements, the automatic door systems was designed in the factory workshop, door size was determined, material selected and accessories on door was designed. The system was consisted of the main...

In the vehicle side impact test, the dummy injuries were caused by the door intrusion. But because of the complexity of the door structure and the connection relation between the door and the vehicle body, the acceleration of the different position of the door was greatly diverse in the side impact....

In order to realize the architectural benefits (increased system scalability, decreased workload, and etc.), the security of the IMA architecture should be put on the first position. IMA architectures utilize shared, configurable computing, communication, and I/O resources. These architectures do lots...

In order to accurately recognize the degradation state of rolling bearing, a hybrid method combining Genetic Algorithm GA and a Support Vector Machine (SVM) was proposed,and the model for degradation state recognition of rolling bearing was constructed. Firstly the feature vectors of degradation state...

Avionics fuel control system, which is applied for delivering fuel to an engine in modern aircraft system, is difficult to study, design, and implement due to the high-security measures and the need for standard certification.To evaluate the complex dynamics involved in implementing fuel regulating for...

Now, the iPhone/iPad have been widely used in the daily life. If we can apply this into the healthcare field, it will improve the efficiency for the doctor to scan the medical images information. In this case, we designed and developed a DICOM image portable browsing terminal system based on the iOS...

The eastern sag of liaohe basin is magmatic activity center of liaohe depression from Mesozoic to Cenozoic,igneous rock is widely development,the main lithology are trachyte, basalt, diabase and so on. Igneous rock lithology is related to the composition, structure, construction and causes of rock, many...

Laser cladding is mainly applied in components renovation, coating, stacking forming, etc. At present, the degree of automation of laser cladding is not very high. Machine vision technology is gradually becoming a good approach to improve the automaticity. Utilizing machine vision to measure and control...

This study presents a Sequential quadratic Response Surface Method(SRSM) using inherited Uniform Design(UD), to reduce the computational burden in optimization process and improve the computational efficiency of engineering optimization. The program comprises a low accuracy global quadratic response...

The line of sight (LOS) information which detected by strapdown seeker is coupled with missile attitude information. On the other hand, since the instantaneous field of view is wider, the noise levels of strapdown seeker are higher than those of conventional gimbals seeker. According to the relationship...

Economics affordability like safety, reliability, maintainability, is the inherent attributes of aircraft. Total life cost is the main economic index for aircraft. Active economic design for aircraft shows cost as independent variable. And economic design should consider total cost throughout the product...

the purpose of the paper is to design power parameters of snow plough and some relevant research of snow plough in order to improving transport efficiency of vehicles, improving winter driving conditions and avoiding accidents. The paper gives some common methods of snow removal and their advantages...

As the improvement of living standard, people are more and more pursuing personalized furniture. For more and more personalized custom products, furniture production designers can no longer fix processing parameters by the means of test sample. There is an urgent need of precise parameter calculation...

To solve bi-objective assembly line design problem (ALDP) considering station paralleling and equipment selection, a Pareto-dominance-based method is presented. The two objectives are minimization of investment cost and maximization of availability of the assembly line. A multi-objective particle swarm...

Objective The human living organ irregular volume calculation and 3D imaging method will give a potential hope for operation direction, tumor spatial location fixing. This project will also find a new method to study human brain volume calculation and this can enhance the neuroscience development. Methods...

Supply chain management (SCM) has turned out to be latently precious approach to gaining access to competitive advantage and improving performance with increasingly escalating competition switching into among supply chains rather than between individual firms. This study is aimed at addressing influencing...

In order to solve the problem of parameter identification of ship's Maneuvering Motion, a fast convergent iterative least squares algorithm is presented considering nonlinear and non-stationary characteristics of ship motion in time domain. The speed and precision of parameter identification have been...

Non-linear distortion would be introduced when non-constant envelope signal passes through power amplifiers. In the satellite navigation system, since composite signal generated by direct linear combination of signals does not have constant envelope characteristic, unexpected distortion would be introduced...

Manufacturing is the main source of the pillar industries of national economy and national income. In the globalization environment, on the one hand, the competition in manufacturing has been from the market competition to the competition of industrial cluster evolution; On the other hand, the development...

Mixed rifle has the merit of improving the accuracy, range, and lifetime of gun tube. Due to the large caliber, the deep helix groove, and the long barrel of large-caliber cannon artillery, the traditional way is a complex, reiterative and time consuming process to design an effective cathode for electrochemical...

Remote handling maintenance (RHM) is the act of monitoring and maintaining equipment in a safety zone away from the site by applying a manipulator (robot) or special equipment inside the nuclear device to reduce the exposure dose and labor intensity for personnel. RHM technology is an important and indispensable...

By using sphere pair with unilateral constraint, the limbs of the proposed pre-stressed six-axis sensor must be under pressure in the measurement process, so prior to measurement, a certain preload must be applied to the sensor. The viable limbs’ number of the pre-stressed six-axis force senor is determined...

To estimate the Melt Index(MI) value accurately and quickly in the quality control process of polypropylene (PP), the paper proposed a forecast model of MI (PHKT-GRBFNN-CRBFNN-HMM) integrating the technologies of data mining, model constructing and two error compensation based on the data. Firstly applied...

By the use of basic geological data, properties, cash thin section, SEM, particle size, high mercury injection and other core analysis experiments are completed to make a detail study on the Chang 6 group characteristics of Zhiluo oil field in diagenesis perspective. The results reveals that sandstone’s...

Adopting laser cladding technology, 3 kinds of alloy powder (Ni, Fe, Co) is successfully cladded on the surface of mold copper plate. Metallurgical bonding between cladding layer and Cu substrate is generated. Cladding layer has fine grained structure without micro-crack and bubble. The average hardness...

In the paper,most multiphase flow model use viscosity as an important parameter, however the viscosity of mixed fluid sometimes is unavailable or difficult to measure especially in small-scale flowing condition,In order to solve this problem, the drift-inhibition angle and expansion-inhibitions angle...

Based on the convex geometry, a lot of endmember extraction algorithms have been proposed, in which N-FINDR algorithm use sample points in data cloud to construct simplex and maximize its volumn, it suitable for the images which contain “pure pixels”, we can randomly select pixels as the endmembers to...

In this paper, the energy on workpiece surface in electrical discharge machining (short in EDM) process were modeled and its related parameters were analysized, based on electron sputtering and the resistance heat reaction of current flow when the tool electrode is negative. The study shows that: when...

parallelizable processing mechanism and multi-core architecture characteristics of image processing algorithm are studied. On the basis, image processing algorithm parallel design paradigm based on multi-core computing environment with five design procedures of analysis, modeling, mapping, debugging...

Aircraft platform environment has an important impaction on the aboard equipment performance. In all environment factors, the temperature is an key one because it will affect the working lifespan and operational performance of aircraft. Therefore, it is necessary to study the temperature prediction algorithm...

It is very difficult that experimental data collection was carried out in the small holes directly.And because of the rheological properties of non-newtonian fluid being complex, its transmission parameters in the channel, people often were depended on the single factor experiment chart or experience...

China feudal society has seriously hierarchical characteristic, its clothes distinguish the status and rank from the color to the pattern. The pattern of Ming and Qing official uniform has special function and inheritance. The bird and beast patterns in representative official uniform not only contain...

Cast-iron parts are employed widely in all kinds of industries, which are very difficult to repair with overlaying welding methods such as electric arc,Ar arc, etc. Laser cladding is a great approach to repair this kind of parts. This paper did some experimental research of laser cladding reparations...

In order to overcome the shortcomings of slide steering technology, the rotary steerable drilling technology is a new technology developed, this technique represents the highest level of drilling technology development. At the same time, rotary steerable technology is becoming one of the world-class...

This article presents the mechanical design of a modular quadruped robot, named XDog. The leg mechanism of XDog has coplanar hip joints with the leg apart from the body to increase the motion range of the hip joint. Gear pair is used to drive each joint to promise high motion accuracy and compact assembling....

The energy storage technology plays an important role in the modern power grid. The application of the energy storage technology can improve the stability and controllability of the new energy technologies, and can steady the power grid operation and improve the quality of power supply. In this paper,...

According to the characteristics of quality engineering curriculum and shortcomings of traditional teaching methods, this paper studies on project teaching reform and practice of quality engineering curriculum, for improving students' quality engineering core skills. An implementation framework of the...

The forecasting method of future values of a time series from current and past values is of considerable practical interest and in important areas of application. In addition to calculating the best forecasts, it is also necessary to specify their accuracy, so that the risks associated with decisions...

This paper presents a qualitative theory for faults diagnosis. We extend Reiter's [1] theory to deal with the dynamic and continuous systems and offer a necessary assumption and the corresponding propositions. Then we propose an algorithm of detection of faults and extend it to the multi-faults case....

This paper presents the process of qualitative multi-faults diagnosis. We propose a new diagnostic process for continuous and dynamic system and its corresponding consistency-checking module. The STRIPS language is used to generate the system model since it integrates the cause-effect information required...

Cold roll-beating is a new advanced plastic forming technology, obtaining the forming force varying law is key to study the forming mechanism. Aiming at force measuring requirement in cold roll-beating forming process and the forming principle, a strain gage type dynamometer dedicated for cold roll-beating...

To improving the NVH (Noise, Vibration and Harshness) performance of vehicles, the NVH performance of exhaust system must be considered. As hanger is the main vibration transfer path and hanger isolator is the crucial vibration isolation components, it is necessary to study hanger location and stiffness...

Thermostat is an important part of car cooling system. In this paper, with the fluid analysis software FLUENT, CFD simulation analysis was carried out on the two kinds of thermostat. The distributions of temperature, speed, pressure were obtained by simulation analysis of flow field of thermostat, and...

The cavitating water jet is a new type jet with great potential and good efficiency, which has been applied widely in rock crushing, oil drilling, wastewater degradation, industrial cleaning and so on.Cavitating water jet cleaning technology was caused the attention in these years for good cleaning quality...

Two machines driving one propeller, especially CODAD (Combined Diesel and Diesel) has been widely used in marine propulsion shafting for power performance and fuel economy, but there were few researches about the device for shaft vibration. In this paper, based on the independent design multi-functional...

Time reversal technique as an excellent channel equalization technologywhich can restrain multipath effectively to implementation time focusing and can improve the distribution of energy in space to implementation spatialfocusing.This paper aim to improve the shortcomings with poor accuracy of positioning,a...

The design method and design criteria for low noise gear were introduced. Based on the analysis of gear modification principle, determination of basic parameters and the design of modification scheme, taking SS8- II type quasi- high speed passenger electric locomotive gear transmission as a studying...