bluuebunny/crossref_metadata_2025 huggingface dataset:
Condensate Pipe Vibration Analysis in the Air Cooling System
Authors: Li Li Mei , Peng Ji Ye , Li Hai , Yang Yu Zhong
Published: June 2013

Condensate pipe vibration in the air cooling system was analyzed. The flow pattern discrimination parameters were obtained through carrying out the iterative calculation on the continuity equation and flow equation. It was proposed to use the flow analysis method to determine pipe diameter and arrangement in the design, and to use the static and dynamic analysis methods to determine pipe support settings. These analysis methods are effective to actual engineering design proved by an example. Finally this paper puts forward the improvement measures to prevent condensate pipe vibration.
Fault Diagnose of Rotor Winding Inter Turn Short Circuit in Generator
Authors: Xiao Hai Yan , Wang Xue Wu , Chen Deng Feng
Published: June 2013

Based on magnetic characteristics of inter turn circuit of rotor windings in turbo generator, and analysis the principles of detecting coil method. Based on the symmetry of generator structure and magnetic character between stator and rotor, three fault diagnose methods are presented in this paper: Wave form limitations, Half-wave sliding superposition and Reference wave forms. The application example shows that Reference wave forms method is capable of diagnosing inter turn fault, its severity, and especially locating the inter turn short circuit fault.
The Characteristics Concerning a Class of Orthogonal Multivariate Matrix-Valued Scaling Functions and Frame Packets
Authors: Liu Hong Yun , Li Jie
Published: June 2013

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. In this work, the notion of matrix-valued multiresolution analysis of space is introduced. A method for constructing orthogonal matrix-valued ternary wavelet packs is developed and their properties are discussed by means of time-frequency analysis method, matrix theory and functional analysis method. Three orthogonality formulas concerning these wavelet packets are provided. Finally, new orthonormal wavelet pack bases of space are obtained by constructing a series of subspaces of orthogonal matrix-valued wavelet packets.
The Design of Dynamic Reactive Power Compensation Device on Segmented Control Mode
Authors: Lu Xiu He , Li Chang Shuo , Li Qi Lin
Published: June 2013

For metallurgical industry perceptual load fluctuations large, and distribution station bus power factor low, and power loss high problems, based on reactive power compensation principle of apparent power does not variable, and used SVC structure forms, has made sectional type compensation control mode, and based on power factor of closed-loop control method, has researched the dynamic reactive power compensation device, by the check of practical run, the feasibility has been proved of the control method, and it has a clear compensation effect and wide practical range and other outstanding features.
Investigation and Analysis on the Performance of the Oscillating Buoy Wave Power Device under the South China Sea
Authors: Mao Lai Feng , Zhang Jun , Qu Quan You , He Hong Zhou
Published: June 2013

The oscillating buoy wave power device is more effective than other devices in energy conversion efficiency, and now it has been widely applied in development of marine wave energy. The oscillating buoy, which is an important component for the oscillating buoy wave power device, is closely related to energy conversion efficiency. In this paper, considering applying conditions in South China Sea, the dynamic characteristic for oscillating buoy is simulated using AQWA software. By analyzing and comparing dynamic characteristics of several different structure bodies, an optimal structure buoy is obtained and it has better energy conversion efficiency.
Analysis of Soil Reinforcement in Cantilever Retaining Structure for Foundation Pit in Soft Soil Region
Authors: Ma Yan Chao , Chen Ying Hui , Pan Yan Lian , Wang Shuai , Liu Qing Shui
Published: June 2013

Cantilever retaining structure is often applied to shallow foundation pit supporting, but it causes large deformation in soft soil region. Reinforcement of soil can solve this problem, and a finite element model of foundation pit which based on elastic fulcrum method is founded to research the regular pattern how the depth and degree of soil reinforcement effects the deformation and the inner force of the cantilever retaining structure. The result shows that the lateral deformation reduces with the increases of the depth and degree of soil reinforcement, and critical depth and degree of reinforcement can been founded. The change of inner force caused by depth and degree of soil reinforcementis small. So it is important to reasonably decide the depth and degree of soil reinforcement.
Research on the SVC Auto-Compensating Method Based on the Variable Reactor
Authors: Chen Jing , Cheng Qi Jian , Yuan You Xin , Yang Wei
Published: June 2013

The objective of this work is to research on a SVC auto-compensation method to improve the power factor of the power supply system. Firstly, the principles of the reactive power compensation of FC+TCR are analyzed qualitatively. According to the deficiencies of this compensator, a novel SVC auto-compensating method based on the variable reactor is presented. The reactor controlled by anti-parallel thyristors is namely as the variable reactor in this method. The secondary-side equivalent inductance of the variable reactor is varied by adjusting the SCR firing angles. And then, the equivalent inductance of the variable reactor of the compensator branch is adjusted indirectly for compensating the corresponding reactive power after the working conditions of the load are changed. Therefore, the auto-compensating of this var compensator is realized. The auto-compensating principles of this compensator have been analyzed, and a research on the compensating parameters of this compensator is given emphatically in this paper. Finally, the essential operation steps of this SVC compensation method are given. The research of this paper has laid a theoretical foundation for this compensator in industrial applications.
Design and Research of Intelligent Power Supply for Ozonizer Based on MCU
Authors: Yang Jia Zhi , Jiang Cun Bo , Fan Xing Ming , Yang Fei , Yi Sheng Li , Yang Fan
Published: June 2013

Ozone is widely used in industry or even home nowadays, the power supply with frequency and duty cycle easy-adjust feature is very important to ozone production. An intelligent power supply based on MCU system is introduced in this paper, Intelligent Power Module (IPM) is used to compose a full bridge inverter circuit, and PWM technology is used to drive the IGBTs integrated in the IPM. The frequency and duty of the output AC can be adjusted manually or by auto tracking, and can be displayed synchronously on the LCD. The result shows that the power supply can adjust and display the output frequency and duty cycle by keyboard manually or by auto tracking based on detected current, and ozonizer have a higher efficiency with adjustable output frequency and duty cycle.
Application of NSTRSS in Mobile Robot Obstacle Avoidance Simulation
Authors: Chai Na , Xu Wang Bao
Published: June 2013

Mobile robot becomes more and more perfect with people research continuously, obstacle avoidance is one of the most basic function in the process of operation. At present, the robot simulation system is an important tool of researching robot. In this paper, hardware design and software design were done by NSTRSS and real-time dynamic obstacle avoidance simulation of mobile robot is completed successfully. The experimental result shows that the simulation has 3D scene, lively effect and a good operation interface.
Effect of Driving Duration and Work Schedules on Vigilance Level and Driving Performance of Bus Drivers
Authors: Pei Yu Long , Wang Lian Zhen
Published: June 2013

The bus drivers have to suffer from very high labor intensity every day. Driving fatigue among the bus drivers is very common and has very dangerous risk for traffic safety. Fourteen male bus drivers, divided into two groups according to two kinds of work schedules, participated in a control experiment. The driving session was performed in the real road scene. Each driver was asked to finish a five-laps driving task. The Stanford Sleepiness Scale score was recorded to measure the subjective fatigue feelings of the bus drivers. Choice reaction time and PECLOS indicators were used to assess the driving performance. One-way ANOVA was used to examine significance of data variations with SPSS. Person’s correlation coefficient was employed to explore the correlations among the three indicators. The results reveal that driving duration has a significant effect on the vigilance level of the bus drivers. There are evident positive correlations between the three indicators. And the two kinds of work schedules have different effect on the bus drivers’ prevention of driving fatigue.
Real-Time Optimal Power Management for Hybrid Electric Vehicle Based on Prediction of Trip Information
Authors: Fang Li Cun , Xu Gang , Li Tian Li , Zhu Ke Min
Published: June 2013

Power management of hybrid electric vehicle (HEV) is an important operational factor for HEV to enhance fuel economy and reduce emissions. Optimal control for HEV requires the knowledge of entire driving cycle and elevation profile to obtain the optimal control strategy over fixed driving cycle. In this paper, the traffic knowledge extracted from intelligent transportation systems (ITSs),global positioning systems (GPSs) and geographical information systems (GISs) is used for predicting the knowledge of the future driving cycle, and the real-time optimal control strategy based on dynamic programming in a moving window is investigated in order to minimize fuel consumption. A simulation study was conducted for two driving cycles, and the results showed significant improvement in fuel economy compared with a rule-based control. Furthermore, the results showed that the distance of the moving window has obvious effect on the fuel economy.
Design and Implementation of Development and Testing Platform for Airbag Control System
Authors: Nie Min , Xu Cheng , Li Tao , Zhang Ting
Published: June 2013

In the late-stage of designing an airbag control system, a lot of collision experiments should be done to verify the performance of the system, but collision experiments cost a lot of time and money. In this paper, we design a new development and testing platform that can generate multi-channel acceleration analog signals and provide multi-channel airbag ignition interfaces. The platform receives the acceleration data customized on PC via a USB interface, then, the PC issues a command to start the output of the acceleration waveforms. The airbag ignition interface has the same electrical characteristics with real airbag, when it receives an ignition current, the platform will ignite the virtual airbag, and record the time. The experimental results show that the platform designed in this paper can precisely simulate the acceleration waveforms collected in collision experiments.
Study on a Testing Device of Automobile Brake Drum Running-In and Braking Force
Authors: Kang Jie , Di Jian Hui , Kang Jin Peng
Published: June 2013

This paper introduces a kind of testing device for automobile brake drum running-in stand and braking force, this device combines the existing car drum brake with braking force by means of increasing the frequency conversion speed control device and redesigning control system. Using this device will reduce the occupied site and realize the conversion between two functions in situ and save the operation time of function conversion. It can completely replace the original car drum brake running-in stand and braking force test bench.
Film Bulk Acoustic Wave Resonator Filter for Ku-Band Applications
Authors: Mohd Nor Nurul Izza , Shah Kriyang , Singh Jack , Sauli Zaliman
Published: June 2013

The design and analysis of Ku-band ladder-type filters based on film bulk acoustic wave resonator (FBAR) is presented. The proposed FBAR filter has an insertion loss of-3dB, out-of-band rejection of-12dB, centre frequency of 15.5GHz with 3dB bandwidth of 1.0GHz. Based on the characteristics of the FBAR filter, the expected characteristics of FBAR resonators are determined by using the Butterworth Van Dyke (BVD) equivalent circuit.
Effect of Pre-Polymerization Conditions on the Performance of UF/Low Melting Point Paraffin Microcapsules
Authors: Xin Chang Zheng , Wang Li Na , Huang Xian Gan , Fan Zhi Shan
Published: June 2013

The reaction mole ratio of monomers, pH value, reaction temperature and time factors directly affect the properties of urea-formaldehyde resin (UF)/low melting point paraffin wax microcapsules during in situ polymerization process. The effects of these factors on the thermal storage capacity, particle size and distribution were systematically discussed. When the reaction conditions were formaldehyde and urea molar ratio of 1.8:1, the prepolymerization system pH controlled at 8.5, the reaction temperature of 60 °C, the reaction time of 60 min, the synthetic phase change materials microcapsules have good morphology and thermal storage capacity.
Simple Tuning Method of a Fuzzy PID Controller for a Class of Unstable Processes
Authors: Ren Yao Qing , Xu Zhen , Ding Wen Hua
Published: June 2013

In this paper, a class of fuzzy Proportion-Integration-Differentiation (PID) controller is tuned for a class of unstable processes based on PID theory. Phase margin and gain margin method is used to design the controller. Moreover, in order to reduce complications of solving equations deduced from phase margin and gain margin, a global approximate method is proposed for those equations. Finally, the simulation results show that the design method not only can be applied to the class of unstable processes but also has a better robustness than traditional PID controller.
Design on the Crane Safety Monitoring System Based on DM3730
Authors: Chen Guang Qing , Sun Miao , Leng Jian Wei
Published: June 2013

According to the current domestic crane safety protection measures are not perfect situation, this paper used DM3730 processor, the embedded theoretical basis, combining the industrial field work environment in consideration, design a set of perfect crane safety monitoring system, accept and deal with crane various signals, various types of emergency situations and signal change to make effective response measures to avoid accidents.
Analysis of Main Controlling Factors for Lithologic Reservoirs of the Fuyu Oil Layer in Honggangbei Area
Authors: Sun Yu , Zhang Jin Yan , Ma Shi Zhong , Wu Zhen Yu
Published: June 2013

Through the research on types and characteristics of lithologic reservoirs of Fuyu oil layer in Honggangbei area, Songliao Basin, such types of lithologic reservoirs is identified from up-dip pinch-out sandstone reservoirs, abandoned channel screened reservoirs, local-oscillation channel sandbody reservoirs, fault-lithologic reservoirs, fault-structural nose reservoirs. Its characteristics are complicated distribution of oil and water, rapid lateral change of reservoirs and monosandbody pool-controlling. Through fine dissection of developed reservoirs, the results show that genetic monosandbody traps are minim oil-controlling units, oil-accumulating units and main controlling factors for lithologic reservoirs of Honggangbei, which it is controlled by vertical layer and planar sedimentary microfacies. Spatial complicated superposition of vertical multi-layer and planar multi-branch monosandbody traps and mis-traps is essential reason of complicated distribution of oil and water.
Design of Natural Gas Ejector in the Engine
Authors: Chen Ming Fei , Wang Na , Xiao Jian Chun , Liu Ke Ming , Zhang Lian Yong
Published: June 2013

in order to meet the requirements of the supplying system of CNG engine to the mixed state of fuel and the ejection time control of fuel, the overall structure of CNG fuel ejector is given. The structural characteristics of the main components of the CNG ejectors are analyzed and the structure parameters which have significant effect on the performance of the ejector are designed and calculated. Through the calculation on the through-hole diameter, spring, coil and minimum wall thickness, it is indicated that the designed ejector satisfies the demand of the jet pressure and jet control.
Model of the Initial Stiffness in Extended End-Plate Connection
Authors: Zhao Jian Li
Published: June 2013

Extend end-plat bolted connections are widely used in steel frames. The rotational stiffness has great influence on steel frame stiffness and deformation. The decrease of the frame lateral stiffness, due to connection rotational deformability, leads to the increase of the period of vibration and the frame sensitivity to second-order effects. This thesis divides the end plate into several parts equivalent to different Timoshenkos beams to determine their contribution to rotational stiffness of the connection. Then stiffness of all parts and bolts is given, and then the component method is used to calculate rotational initial stiffness of extended end-plate connections. Comparisons with results of ANSYS and related tests show that the proposed equations have excellent precision. And the calculating process is simple and easily applicable in practice.
Optimization Design for MA5300 Injection Molding Machine’s Clamping Unit’s Hydraulic System
Authors: Wang Jing , Wang Zheng Cai , Xue Li Ying , Liu Li Zhu
Published: June 2013

Focusing on PET perform molding features, working principles of MA5300 Injection Molding Machine’s clamping unit’s hydraulic system has been analyzed in this paper. Based on previous hydraulic system, magnetic exchange valve has been added on the demoulding hydraulic circuit, demolding speed has been fastened; energy accumulator has been added on the control circuit so as to stabilize controlled oil-source, improve time of opening and clamping mould and response speed. In addition, common one-way valve in core oil circuit is replaced with hydraulic control one-way valve, in order to realize pressure maintaining function; hydraulic insurance structure is changed into inner circulation, and two-way cartridge valve is used as security valve, so as to realize faster response, and largely improved equipment security. Through adopting common hydraulic components, under the premise of limited increasing cost, the injection molding cycle for PET perform product has been reduced, and enterprise’s productivity has been improved.
Optimization of Helical Rotors in 3D Modeling Design and Processing
Authors: Chen Guang Zhong , Zhang Bing , Yang Yue , Han Jin , Tong Lin Jun
Published: June 2013

3D modeling process and shaped conductor of head face of helical rotor is described, and the constructing method of critical curves of head face is explained in detail. The processing principle of helical rotor is discoursed in paper and the four-axis tool path of the helical rotor based on ball cutter is deduced in UG environment. The Dynamic Process Simulation of tool path is finished, which Verify the feasibility of tool paths
Studies on the Variation of Flow Parameters through a Ball Valve
Authors: Florescu Iulian , Florescu Daniela , Nedelcu Dragoş
Published: June 2013

This paper aims to highlight the current line of flow through a ball valve for opening its different angles. We chose to study the values of values 30o, 45o, 60o and 75o as represented in figures. Flow simulations were performed using Fluent 6.3 software, power lines are marked by their tangent vectors speed. For a default value of power flow and pressure were represented power lines following the turbulence and hence the increased loan losses occur. This ball valve operation analysis may reveal different hydraulic energy losses given conditions different valve opening and leads to a modern design and dynamic analysis of operation.
An Early-Warning Methodology of Work safety for Chemical Industry Park Based on Immune Mechanism
Authors: Chen Qing Guang , Chen Guo Hua , Duan Wei Li , Ye Qing
Published: June 2013

In order to improve the safety management of chemical industry park, a novel methodology was probed into from the perspective of safety early-warning by introducing immune mechanism. Based on the corresponding relationship between the immune system and the chemical industry park, the interaction mechanism of antigen and antibody was taken to guide the formulation of the safety early-warning index system. The weights of the indexes were observed and calculated through the improved analytic hierarchy process. Inspired by fuzzy inference model and neural network algorithm, the safety early-warning model and safety forecast model of the chemical industry park were put forward. The application result showed that the methodology can realize the function of safety early-warning and safety forecast for chemical industry park. Furthermore, the corresponding countermeasures can be taken to improve the safety management of the chemical industry park.
Multi-Class Logistic Regression Classifier with BFGS Method
Authors: Jin Xiao-Bo , Wang Feng , Zhu Pengfei , Yu Junwei
Published: June 2013

The classical multi-class logistic regression classifier uses Newton method to optimize its loss function and suffers the expensive computations and the un-stable iteration process. In our work, we apply the state-of-art optimization techniques BFGS to train multi-class logistic regression and compare them with Newton method on the classification accuracy of 25 datasets experimentally. The results show that BFGS achieves better classification accuracy than the Newton method. Moreover, BFGS have the lower time complexity, in contrast with Newton method. Finally, we also observe that logistic classifier with BFGS method demonstrate comparable performance with the SVM classifier.
Application of Neural Networks in Forecasting SSE Composite Index
Authors: Xue Yong Gang , Zhang Ming Li
Published: June 2013

The methodology is proposed to forecast the daily SSE Composite Index based on artificial neural network and wavelet analysis. The original Composite Index series is decomposed into various components using wavelet techniques at first. The neural network is applied for modeling components of the decomposed series. The final forecast is obtained by combining the components series forecasts. The empirical results show the superior performance of the proposed methodology as compared to the neural network forecasting models. In addition, the results show the obvious difference among different type network in forecasting performance.
A Novel K-Harmonic Means Clustering Based on Multiple Initial Centers
Authors: Gu Lei , Lu Xian Ling
Published: June 2013

In the initialization of the traditional k-harmonic means clustering, the initial centers are generated randomly and its number is equal to the number of clusters. Although the k-harmonic means clustering is insensitive to the initial centers, this initialization method cannot improve clustering performance. In this paper, a novel k-harmonic means clustering based on multiple initial centers is proposed. The number of the initial centers is more than the number of clusters in this new method. The new method with multiple initial centers can divide the whole data set into multiple groups and combine these groups into the final solution. Experiments show that the presented algorithm can increase the better clustering accuracies than the traditional k-means and k-harmonic methods.
Computing and Analyzing the Sensitivity of Radial-Basis Function Neural Network
Authors: Li Jie , Li Jun , Liu Ying
Published: June 2013

This paper proposes an algorithm to compute the sensitivity of the Radial-Basis Function Neural Network (RBFNN) due to the errors of the inputs and others parameters of the net works. For simplicity and practicality, all inputs and weights are assumed to be independent and identically distributed (i.i.d) with uniform distribution. A number of simulations are conducted and the good agreement between the experimental results and the theoretical results verifies the reliability and feasibility of the proposed algorithm. The relationship between the sensitivity of RBFNN and input error and the perturbation of others parameters is given.
Adaptive Synchronization of One-Dimensional Discrete Chaotic Systems on Complex Networks
Authors: Chen Yan Fei , Jia Zhen
Published: June 2013

A method of adaptive synchronization of one-dimensional discrete chaotic systems on complex networks is proposed. The nodes of complex networks are constructed by one-dimensional discrete chaotic systems, we consider a general drive-response synchronization model of one-dimensional discrete chaotic systems on complex dynamical networks. Based on the adaptive control technique, the parameter adaptive laws and property conversion laws are given to achieve synchronization and parameters identification simultaneously. Simulation results show that the arithmetic average and geometric mean of all the nodes states are equal, furthermore, the unknown node parameters can be successfully identified, all nodes are transformed to drive nodes. This indicates that chaos synchronization is reached in the whole networks.
An Entropy of Interval Type-2 Fuzzy Sets
Authors: Zheng Gao , Yin Shi Wei
Published: June 2013

The entropy shows the fuzzy degree of a fuzzy set (FS) and can be used in various areas. Aiming at the characteristics of the fuzzy entropy and type-2 fuzzy sets (IT2 FSs), we introduce a new entropy of IT2 FSs in this paper. At first, we select an axiomatic definition for it. Then, considering a fact that the operations of IT2 FSs depend on the upper membership functions (UMFs) and lower membership functions (LMFs), we propose a calculation formula and verify it accords with the four axioms of the selected definition. Finally, we use an example to illuminate its reasonable performance.
A Method of Ship’s Path Planning at Sea
Authors: Zhang Yuan Liang
Published: June 2013

Automatic route design will help to develop electronic chart intelligence, hence to improve safety, economy and reliability of the route. In the paper rasterizing charts are used to expressed the navigation environment of the ship and the modified A* algorithm is used to compute the near optimum trajectory of a ship in given environment based on electronic chart dispiay and information system (ECDIS). By tracing Safety contours, computing obstacle areas and taking into account certain boundaries of the manoeuvring region, the problem of avoiding collisions at sea was reduced to optimization task with static constrains. Simulation using MATLAB is conducted to verify the proposed ship path planning method. The good results show the promise of this method for ship at sea.
Stochastic Programming Based on Traveling Salesman Problem with Stochastic Cost
Authors: Yang Xiao Zheng , Li Qing Chun , Zhou Lei , Hui Hong Qi
Published: June 2013

The research of traveling salesman problem (TSP) is important in logistics distribution. Because many stochastic cost factors affecting logistics distribution in real life, a class of stochastic programming model is considered in TSP in this paper. Through given a class of synthesizing effect functions which synthesis expectation and variance of cost factors, stochastic programming model of TSP with stochastic cost can be converted into a class of crisp programming models. A genetic algorithm based on real coding is used in an illustrative example. It is provided to show the effectiveness of the proposed model and method.
Application and Research of the Granular Evolutionary Neural Network Algorithms for the Complex Network
Authors: Tao Yong Qin , Zhang Ping Ding , Li Qing
Published: June 2013

Research on an "Granular Evolutionary Neural Network Algorithms (GENNA)" is applied to the complex network. The theory of the granular quotient space is introduced to the neural network. At first input variables of the neural network are granulated to equivalence classes, so that the input variables of the network structure can be simplified, and have certain clustering characteristics and strong diversity, and then the network parameters and the weights are optimized using evolutionary algorithms, so as to avoid neural network to fall into the local extremum.The experimental results show that the algorithm effectively narrow the search space and accelerate the speed of convergence , and It is feasibility and effectiveness.
Automatic Automotive Panel Drawing Direction Algorithm Based on Genetic Algorithm
Authors: Yu Sheng Wu , Liu Rui Jun
Published: June 2013

The right panel drawing direction is an important prerequisite for generating qualified parts, an important step before the panel forming simulation is to determine the reasonable direction of the drawing. Manually adjust parts in order to overcome rely on experience, the drawbacks to the drawing direction, the direction of the drawing punch and forming the contact area of the sheet as the goal of automatic determination algorithm. Objective function of the direction of the drawing for the variable contact area in the drawing direction of the feasible region, the use of heritage algorithms to optimize the objective function of the contact area and, ultimately feasible within the contact area corresponding to the drawing direction, that is the best drawing direction. The measured results show that the direction of the drawing based on genetic algorithm, the automatic algorithm can fast and accurate to obtain the optimal direction of drawing.
Discussion on Repair Method of Concrete Highway Pavement
Authors: Xia Chun Yan
Published: June 2013

nfluences on properties of the concrete highway pavement were analyzed in this paper, and the optimal formulation materials were gotten to use in the repair of used-broken cement blocks in the experiment. Polyurethane concrete material was prepared, combing the ordinary concrete technology with one-step method of the synthesis of polyurethane hard bubble, and then its mechanical properties of the relevant parameters were measured to determine the optimal preparation program. The results show that the polyurethane concrete also has sufficiently good mechanical properties while it has the characteristic of fast patching.
Heap Adjustment Algorithms Based on Complete Binary Tree Structure
Authors: Hu Yuan
Published: June 2013

In many applications, it is necessary to adjust the node position of complete binary tree, making the data set have the nature of heap. Because when binary tree node data volume is huge, it will be needed apparently for heap adjustment efficiency of repair algorithms which is based on heap linear list to be improved. Now an improved algorithm is proposed by experiments, which utilizes characteristics of priority queue (delete the earliest data) and stack (delete the latest data), and conducts stack pushing on binary tree node, then accesses node successively to call glide adjustment algorithm to improve the adjustment efficiency.
Research on DEM Simulation of Lunar Soil Dig Process by Straight Shovel Collector
Authors: Liang Lei , Liu Tian Xi , Zhao Yang
Published: June 2013

The dynamic model of lunar soil was established by discrete element method and the 0-50cm depth lunar soil dug by straight shovel collector was simulated. According to the simulating result, the collectors variation in load under the condition of variable density of lunar soil is analyzed. Meanwhile, with the simplification of particle diameter and particle shape in discrete element model it shows how the simplified model influences the result, which proves that the acting force to collector increases with the increasing of the collectors depth, and it is directly proportional to depth. Meanwhile, it is unnecessary to consider the change of particle shape if the depth is within 10cm, while it is necessary for the deep dig process.
A Genetic Algorithm for the Production Policy in a Supply Chain under Discrete Demand and Time-Vary Cost
Authors: Ouyang Bing Chang
Published: June 2013

Considering discrete demand and time-vary unit production cost under a foreseeable time horizon, this study presents an adaptive genetic algorithm to determine the production policy for one manufacturer supplying single item to multiple warehouses in a supply chain environment. Based on Distribution Requirement Planning (DRP) and Just in Time (JIT) delivery policy, we assume each gene in chromosome represents a period. Standard GA operators are used to generate new populations. These populations are evaluated by a fitness function using the total cost of production scheme. An explicit procedure for obtaining the local optimal solution is provided.
Learning-Based Multi-Directional Adaptive PSO
Authors: Li Zheng Bo
Published: June 2013

Particle Swarm Optimization (PSO) is a swarm intelligence algorithm to achieve through competition and collaboration between the particles in the complex search space to find the global optimum. Basic PSO algorithm evolutionary late convergence speed is slow and easy to fall into the shortcomings of local minima, this paper presents a multi-learning particle swarm optimization algorithm, the algorithm particle at the same time to follow their own to find the optimal solution, random optimal solution and the optimal solution for the whole group of other particles with dimensions velocity update discriminate area boundary position optimization updates and small-scale perturbations of the global best position, in order to enhance the algorithm escape from local optima capacity. The test results show that several typical functions: improved particle swarm algorithms significantly improve the global search ability, and can effectively avoid the premature convergence problem. Algorithm so that the relative robustness of the search space position has been significantly improved global optimal solution in high-dimensional optimization problem, suitable for solving similar problems, the calculation results can meet the requirements of practical engineering.
Automatic Algorithm of Automotive Stamping Direction Based on GA
Authors: Liu Rui Jun
Published: June 2013

The right panel drawing direction is an important prerequisite for generating qualified parts, an important step before the panel forming simulation is to determine the reasonable direction of the drawing. Manually adjust parts in order to overcome rely on experience, the drawbacks to the drawing direction, the direction of the drawing punch and forming the contact area of the sheet as the goal of automatic determination algorithm. Objective function of the direction of the drawing for the variable contact area in the drawing direction of the feasible region, the use of heritage algorithms to optimize the objective function of the contact area and, ultimately feasible within the contact area corresponding to the drawing direction, that is the best drawing direction. The measured results show that the direction of the drawing based on genetic algorithm, the automatic algorithm can fast and accurate to obtain the optimal direction of drawing.
Mechanical & Electrical Equipment Management Mode Control Computer-Based Network (Wireless)
Authors: Wang Jin Rong
Published: June 2013

The right management managing direction is an important prerequisite for generating qualified parts, an important step before the management forming simulation is to determine the reasonable direction of the managing. Manually adjust parts in order to overcome rely on experience, the drawbacks to the managing direction, the direction of the managing tool and forming the contact area of the sheet as the goal of automatic determination mode. Objective function of the direction of the managing for the variable contact area in the managing direction of the feasible region, the use of heritage modes to optimize the objective function of the contact area and, ultimately feasible within the contact area corresponding to the managing direction, that is the best managing direction. The measured results show that the direction of the managing based on genetic mode, the automatic mode can fast and accurate to obtain the optimal direction of managing.
The Research of Case Matching Algorithm in Drilling Fluid Design Expert System
Authors: Li Jian , Xiao You , Luo Yue
Published: June 2013

In the case-based reasoning in drilling fluid design expert system, it selects the corresponding representation method of attributes and matching algorithm according to the characteristics of drilling fluid system and the formulation. The representation methods of attributes in this article include digital, string and range these three methods, therefore, the corresponding matching algorithms also have nearest-neighbor, string matching and range matching these three algorithms. On this basis, and combined with the single parent genetic algorithm to optimize the initial weights combination, we can get the most optimal and realistic drilling fluid system and formula. This design method can greatly improve the efficiency and accuracy of the drilling fluid formula design.
A Hybrid Particle Swarm Optimization Algorithm Based on Immune Selection for Stochastic Loader Problem
Authors: Wang Hong , Zhao Pei Yi
Published: June 2013

The Particle Swarm Optimization Algorithm is a new computational method for the combinatorial optimization problem, it is simple and effective, but it does suffer from the premature convergence. For overcome this problem and finding the optimal solution of the Stochastic Loader problem, we presented a new hybrid Particle Swarm Optimization Algorithm that combines with Artificial Immune Algorithm, such as immune memory, antibody promotion and suppression, immune selection and so on. Numerical example illustrates the higher efficiency and reliability of the new hybrid PSO compared with the basic Particle Swarm Optimization Algorithm.
Property Preservation of Petri Refinement Net Based Representation for Embedded Systems
Authors: Xia Chuan Liang , Wang Tong Guo , Zhang Ji Jun , Wang Zhong
Published: June 2013

We study the refinement operation of Petri net based Representation for Embedded Systems (PRES+). A refinement of Petri nets is an important transformation to preserve properties of original nets. For systems specified in PRES+, this paper proposes a kind of refinement operation for PRES+ and gives some conditions to preserve important properties, such as reachability, timing and functionality.
Research on Information Extraction Based on Web Table Structure and Ontology
Authors: Wang Xiao Feng
Published: June 2013

With the rapid development of the Internet, as well as the increasingly large Web data, enabling users to obtain useful information from the Web is becoming increasingly difficult, From the Web, how to quickly and efficiently and accurately extract information has become an urgent problem, the Web information extraction technology came into being. Through a Web table positioning, Web table structure identification, the Web table content integration and extraction of results and so on four areas, Proposed a Web-based table structure extraction method. It has good versatility and high accuracy.
Finite Element Analysis of Finishing Mill Roll Based on ANSYS
Authors: Yu Wen Yan , Qiang Lei
Published: June 2013

According to rolled plate situation of finishing mill roll of a steel mill,the large finite element analysis software ANSYS is used to establish the working process of the roll of three dimensional thermal coupling model. It is also put into consideration that the actual process of the simulation should define the boundary conditions. Thermal coupling stress results are concluded,which could provide a theoretical basis for improving the roll life and strength analysis.
The Eigenvalue-Based Decomposition Method of Hermite Matrix and its Realization on Computer
Authors: Sun Bao Fa
Published: June 2013

In order to realize the MUSIC approach for multiple emitter location, eigenvalue-based decomposition of the Hermite array covariance matrix has to be done. This paper proves that the problem of a Hermite matrix decomposition can be transformed into the problem of a real symmetric matrix decomposition, and gives the detailed transformation method. Using Jacobi diagonalization method, the eigenvalue-based decomposition of a real symmetric matrix decomposition is realized on computer, so the eigenvalue-based decomposition of a Hermite matrix is realized on computer.
Design and Implementation of a Remote Calibration Monitoring System for TT&C Ships
Authors: Wang Jue , Pan Gao Feng , Xue Jun , Xie Yong , Liang Sheng
Published: June 2013

In order to improve the orbit determination precision of TT&C equipments, relevant parameters have to be calibrated accurately by using the calibration tower during the dock calibration. Based on analysis of the control objects in remote control mode, this paper builds the wireless communication system, through selecting wireless bridge to develop the network control module and relevant software. It realizes the remote monitoring for the calibration equipment, facilities and instruments. Results of the test show that the system is reasonable, convenient, reliability and extensibility, which is quietly completely suitable to control the remote equipment of Changxing island calibration tower for TT&C ship.
Study on the Strengthening Buffer Operators Based on the Interpolating Function
Authors: Wu Zheng Peng , Wu Li Yun
Published: June 2013

Based on the present theories of buffer operators, we propose in this paper a kind of arithmetic strengthening buffer operators based on the interpolating function, which all have the universality and practicability. At the same time, we proved the strengthening buffer operators presented by Y.G. Dang to be a special case of ours, and researched the characteristics and internal relations between these strengthening buffer operators. Our work extended widely the applied scope of strengthening buffer operator. The problem of some contradictions between qualitative analysis and quantitative forecast in pretreatment for vibration data sequences is resolved effectively.
Experiment and ANSYS Finite Element Analysis on Concrete Filled Thin-Walled Steel Tube Joints
Authors: Jian Li
Published: June 2013

The experiment on joints of concrete filled thin-walled steel tube and the composite beam is carried out in 8 specimens, and mechanics performance of all type joints is concluded in general. The test results indicate that each joint has higher bearing capacity and better ductility performance. Solid65 and Shell181 Elements of ANSYS finite element program are adopted to simulate concrete and thin-walled steel sheet of composite beams and columns. Calculation results in theories proved conformity with the test in primary.
The Characterization of Multiple Harmanic Riesz Bases of Affine Subspaces and Applications
Authors: Du Shu De , Lv Bao Xian
Published: June 2013

An information system is any combination of information technology and people's act- ivities that support operations, management and decision making. Information science focuses on understanding problems from the perspective of the stakeholders involved and then applying information and other technologies as needed. The definition of multiple harmonic frames for subs -paces with integer translation is proposed. The notion of a generalized multiresolution structure of is also introduced. The construction of a generalized multiresolution structure of Paley -Wiener subspaces of is investigated. The pyramid decomposition scheme is derived based on a generalized multiresolution structure.
Study on the Application of Bar Code Technology in Equipment Logistics Automated Storage and Retrieval System
Authors: Wang Xiao Kun , Wang Hong Feng , Niu Yu Bao , Dong Qun Ying , Wang Cong
Published: June 2013

High-tech local war drives higher requirement of speed and accuracy performance of equipment logistics. In this paper, using LABVIEW as data acquisition platform and control program environment, an automatic control equipment logistics system is designed. This system integrates bar code technology and warehouse position system based on microprocessor STM32. Whole process monitoring and management can be realized by this system, which has a high significance of improving the military equipment configuration capabilities.
Study on the Archives Management System of Aviation Products Based on MBD
Authors: Zhang Hai Jun , Zhang Sen , Yan Qiong
Published: June 2013

With the model based definition (MBD) technology widely used in the aviation industry, the traditional archives management mode had seriously hampered the market response speed of aviation products. Firstly, the paper analyzed the formation process of the MBD-based aviation product archives data. Secondly, the paper designed an integrated system framework of MBD-based aviation product archives, which employed the strategy "immediate logical archiving, regular physical archiving. Finally, the paper proposed the functional module of the MBD-based aviation product archives management system (MBDAMS), which was benefit for the automated, knowledge-based management of the aviation product archives. The MBDAMS has the engineering practical value and the good application prospect.
TL-Strongly Implicative Ideals of BCI-Algebras
Authors: Zhang Xiao , Sun Shao Quan
Published: June 2013

In this paper, the concepts of TL-strongly implicative ideal of BCI-algebra is introduced. A necessary and sufficient condition for a L- subset of BCI-algebra to be a L-strongly implicative ideal is stated, and inverse-images of TL-strongly implicative ideal under BCI-algebra homomorphism are studied. Also, several characterizations of TL-strongly implicative ideal are given. Where T is an arbitrary t-norm on a given complete Brouwerian lattice L.
Quality Management Research of all Handset Lithium Battery Engineering Parts
Authors: Jin Man Hong , Chen Jing , Zhong Xin
Published: June 2013

with the advent of the era of 3 g, mobile phone has become a key factor restricting the development of mobile phone battery, lithium ion battery is still dominant used in mobile phone in the next four or five years. In this paper,it has been analyzed that lithium ion battery parts, and does quality management of all engineering parts, mainly focus on the quality control of the Angle of the sealing plate, sealing body and the shell, at the same time deeply analyzes the different parts of the common categories .So this paper plays a guiding role in guaranteeing the whole project management of the quality of handset lithium battery.
Development of Long Distance Data Transmission and Control Circuit in Borehole
Authors: Le Heng , Deng Ming , Zhang Qi Sheng , Li Guan Min , Qiao Shan
Published: June 2013

This paper introduces a data transmission circuit used to transmit signals over thousands of meters in borehole; meanwhile, a control system that is equipped with the circuit is also presented here. This set of equipment has many advantages over previous systems-smaller size, less cost, longer communication distance and friendlier user interface. The design of hardware in the system consists of LVDS transceiver circuit, USB port circuit based on high speed MCU C8051F321, automatic power-on circuit based on relay TQ201 and acquisition circuit based on 24-bit analog-to-digital converter LTC2492. The software is based on both C language and VC++6.0. Finally, it accomplishes a kind of data transmission circuit and control system in borehole which delivers the data from thousands of meters away.
Development of Pusat Pengajian Diploma Industrial Training Online System (PiTOS): A Step Forward
Authors: Mohd Hanifa Rafizah , Mohamad Shamsul , Bahrudin Ida Aryanie , Muhammad Firdaus Kamarudin
Published: June 2013

This paper describes the design and implementation of the Pusat Pengajian Diploma Industrial Training Online System (PiTOS), which was designed to be a user friendly, generic, web-based system to ease accessibility to all vital information related to students’ industrial training in a more organized and efficient way in a paperless environment. The solution we developed is a web application, written using PHP and utilizes the MySQL as the database management system.