bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Residual Fatigue Life Model for Lattice Boom of the Crane In-Service
Authors: Cai Fu Hai , Zhao Fu Ling , Wang Xin , Chen Li Ming
Published: August 2013

There were lots of distributed sources in the process of fatigue crack propagation of the lattice boom. Static evaluation of the reliability indicators couldnt be satisfied to solve practical engineering problems. The load and fatigue resistance were regarded as random processes and the fatigue failure of the randomness in a variety of factors, the concept of dynamic reliability of the weights index was proposed, models of dynamic reliability of the weights index were built based on the fatigue bearing capacity mode and limit damage degree mode. Fatigue stress experiments comparisons were done on a crawler crane according to the actual operating conditions with a K-type welded joints prototype. The results show that the dynamic reliability evaluation assessment model is more accurately in the fatigue life evaluation and the method can provide a new assessment method for engineering applications.
Permeable Rice Husk Fibre Shell Mould System
Authors: Harun Zawati , Kamarudin Noor Hasliza , Yunos Muhamad Zaini
Published: August 2013

Basically, permeability of ceramic shell mould system play an important role in minimizing the casting defects in most investment casting shell. The mould has to be sufficiently permeable to obtain complete mould filling during casting process. Mould fill can be improved by increasing the open porosity that definitely will increase permeability ceramic shell mould. The elimination of rice husk volatile elements has contributed to the increment of pore structure that provides a great deal of connected pathways through the ceramic shell which directly will increase the permeability of the ceramic shell mould during casting process. Indeed, the rice husk fibers additions increase the permeability after firing by a factor 3 compared to the standard shell mould system (without fiber) that makes its an excellent alternative in producing higher permeable ceramic shell system.
Rule-Based Mamdani-Type Fuzzy Modeling of Heating and Cooling Performances of Counter Flow Ranque-Hilsch Vortex Tubes with Different Geometric Construction for Brass
Authors: Ozen Dilek Nur , Berber Adnan , Dincer Kevser
Published: August 2013

In this study, thermal performances of counter flow Ranque-Hilsch vortex tubes were experimentally investigated and modeled with a Rule Based Mamdani-Type Fuzzy (RBMTF) modeling technique. The vortex tubes were made of brass. Diameter of vortex tube (D) was 10 mm. Length of vortex tube (L) was 10D, 11D, 12D, 13D, 14D. Input parameters (ξ, L/D) and output parameters (ΔTh, ΔTc) were described by RBMTF if-then rules. 45 experimental data sets were used in the training step. R2 for the ΔTh was found to be 99.42 % and R2 for the ΔTc was 99.66 %. The actual values and RBMTF results demonstrated that RBMTF can be successfully used for the determination of heating and cooling performances of counter flow RHVT with different geometric constructions for brass.
Study on Waste Aluminum Cans Remelting and Purification Technology
Authors: Duan Rui Bin , Bai Pei Kang , Yang Jing , Zhang Wen Da , Ding Hao
Published: August 2013

With orthogonal optimization method, the impact of the ratio and addition of flux and melting temperature on the recovery and metal impurity quantity of waste aluminumcan is researched, and the optimal purification process is obtained:Formula 3 flux, melting temperature 740°Cand flux addition 4%. In this condition, the recovery rate is 89.3%, flux addition is 0.1024%. Furthermore, the ratio and addition of flux have a significant effect on the waste aluminum cans purification is concluded.
Finite Element Analysis of Modals Intermixture of Ultrasonic Motor and Separation Technique
Authors: Wang Zi Lei
Published: August 2013

In order to reveal the Intermixture of Different Modals of Ultrasonic motor, a complete analysis about the modal types and excitation responses were analyzed by finite element analysis. The intermixture of different modals of the stator and its performance under shock excitation are found while doing modal analysis. Through the sensitivity analysis of modal frequency to structural parameters, the separation technique of stator modes is found, which can solve the intermixture problem and provide basis for accessing the structural design
Reaction Products of Lime Zeolite Stabilized Kaolin Humic Acid
Authors: Ling Felix N.L. , Kassim Khairul Anuar , Abdul Karim Ahmad Tarmizi
Published: August 2013

Lime, a traditional calcium based stabilizer, had been widely used in chemical stabilization to improve the strength of soil. Past researches had shown that the major reaction product of lime and soil such as Calcium Silicate Hydrate (CSH) was formed abundantly under the observation of microscopic studies. However, sometimes it will be quite difficult to confirm the existence of CSH phase if solely based on its needle like structures, especially when other rod like structures will also exist. Practically, the recognition of the CSH phase by using XRD spectrum through matching with published data had speed up the process of identification. If the method is viable, then theoretically, the molecular weight ratio of silica and calcium, S/C of CSH gel is specific and can be determined based on its possible chemical compound. Hence, this study was carried out in an attempt to examine the possibility use of its S/C ratio as a quick method to confirm the existence of CSH gel. Two types of artificial organic soils were formed by admixing kaolin (inorganic matter) and humic acid (organic matter) with the ratio of 7:3 and 5:5. Four types of admixtures with different percentages ratio of lime and zeolite (a kind of pozzolan) were used to stabilize the soils. The specimens were cured at elevated temperature of 50°c in order to accelerate the development of reaction products. Field Emission Scanning Electron Microscope with attached Energy Dispersive Analyzer (FESEM-EDX) was utilized to observe and determine the existence of reaction products and its bulk chemical composition. The S/C ratio of needle like structures were determined and it is found that the S/C ratio fluctuates and varies significantly from one specimen to another. It is believed that due to the limitations of the experimental setup, the EDX analysis can only serve as semi-quantitative and act as a reference guide on the existence of element. Despite of its limitations, the EDX analysis is useful in distinguish the CSH from other structure which is physically un-identical.
The Shift Speed Control of CVT on Different Conditions
Authors: Xia Jing Jing
Published: August 2013

It will cause the drop of the acceleration performance and driving comfort if the continuously variable transmission shift too quickly. So Aiming at the shifting problem of continuously variable transmission system, This thesis put forward the method to control shift speed of the continuously variable transmission based on driving intention. By the dynamics analysis of continuously variable transmission system, it does a research on the influence on the motor automobiles acceleration performance and driving comfort, when the ratio changes too fast. According to working practice, analyzing shift way of continuously variable transmission system. Through the above analysis and findings, the method to control shift speed based on driving intention will be designed to make acceleration and driving comfort unified. And by limiting the maximum CVT ratio change rate, the automobile acceleration performance can be further improved.
Ways to Obtain Training Sample in Inversible System of Neural Network
Authors: Wan Shao Song , Cao Jian
Published: August 2013

This paper discusses training structure and procedure about inversible system of neural network. Subsequently, selection of training sample is focused on. Finally, the paper proposes some principles and ways to obtain training sample of inversible system.
A Improved Particle Swarm Optimization and its Application in the Parameter Estimation
Authors: Wu Tie Bin , Cheng Yun , Hu Zhi Kun , Zhou Tao Yun , Liu Yun Lian
Published: August 2013

For the issues of inferior local search ability and premature convergence in the later evolution stage of the traditional particle swarm optimization, an improved particle swarm optimization is proposed and applied to the parameter estimation. Firstly, in the evolutionary process of particle swarm optimization, the particles which have crossed the border are buffered according to the speed. Then, each particle is performed mutation in different probability according to the evolutionary generations, which can keep the diversity of the particle swarm and avoid the premature convergence effectively. Thirdly, a crossover operation is conducted between the current best particle and the particle which is selected from the particle swarm with a certain probability, which can lead particles gradually approaching to the extreme point and hence, the local search ability of the algorithm will be improved. The advanced particle swarm optimization is applied to the parameter estimation of the kinetic model in the Hg oxidation process and the application result show the effectiveness of the suggested algorithm.
Microobjects Gripping with Controllable Menisci Based on Pressure Adjustment
Authors: Wang Le Feng , Guan Nan Nan , Rong Wei Bin , Sun Li Ning
Published: August 2013

Flexible and reliable gripping is a fundamental task in various micromanipulation and microassembly fields. Shape-controllable menisci based on pressure adjustment were proposed to pick up microobjects. Lifting force is provided by a controllable liquid bridge which is formed between the capillary tube and the microobject. The volume and the shape of the meniscus could be regulated dynamically by changing the pressure at the capillary nozzle orifice, thus the capillary force alters correspondingly. The pressure adjustment was realized by adjusting the height of the reservoir device precisely. Fluent software was used to simulate the fluid meniscus under different pressures. Experiments were performed to achieve controllable meniscus with different height difference of liquid level between the reservoir device and the capillary nozzle orifice, and microobjects griping operations were executed to verify the method.
The Research on the BP-Neural-Network-Based Pre-Warning System for the Sustainable Forestry Economic Development
Authors: Cui Wei , Zhuo Xian De , Hua Wei
Published: August 2013

The sustainable forestry economic development is a typical non-linear complex system, so traditional statistical methods are hard to be used for the pre-warning. This paper constructs the pre-warning index system for the sustainable forestry economic development, and then builds a pre-warning model for it by applying the BP artificial neural network technology. This model provides a technical means for the pre-warning analysis of the sustainable forestry economic development as well as the decision-making basis for the forestry economic management and planning.
Human Action Recognition Based on Hybrid Features
Authors: Zhong Ju , Liu Hua Wen , Lin Chun Li
Published: August 2013

The extraction methods of both the shape feature based on Fourier descriptors and the motion feature in time domain were introduced. These features were fused to get a hybrid feature which had higher distinguish ability. This combined representation was used for human action recognition. The experimental results show the proposed hybrid feature has efficient recognition performance in the Weizmann action database .
Hybrid Optimization Approach for Evaluating Photovoltaic Cell Parameters
Authors: Ye Mei Ying
Published: August 2013

A new hybrid intelligent technique is proposed to evaluate photovoltaic cell model parameters in this paper. The intelligent technique is based on a hybrid of genetic algorithm (GA) and LevenbergMarquardt algorithm (LMA). In the proposed hybrid intelligent technique, the GA firstly searches the entire problem space to get a set of roughly estimated solutions, i.e. near-optimal solutions. Then the LMA performs a local optima search in order to carry out further optimizations. An example has been used to demonstrate the evaluation procedure in order to test the performance of the proposed approach. The results show that the proposed technique has better performance than the GA approach in terms of the objective function value, the computation time and the reconstructedI-Vcurve shape.
Temperature Field of Electro-Hydraulic Pump with Finite Element Model
Authors: Zhang Xiao Ning , Xue Jing , Fu Yong Ling , Li Zhu Feng
Published: August 2013

Aim. The full paper begins with a variety of Electro-Hydraulic Pump (EHP) and a review on work of existing hydraulic pump, resulting in, in our opinion, the conclusion that it is absolutely essential to in-depth study on the EHP, a highly integration of electric motor and hydraulic pump. We now present a model how to get temperature field of our design plunger EHP that we believe that it can much better develop the EHP. In the full paper, we explain our method in some detail; in this abstract, we just add some pertinent remarks to naming the topics, such as motor thermal model, the fluid model and the heat conduction model. We discuss the temperature distribution under the different leakage decided by oil film thickness. Finally we do simulations in ANSYS. The simulation results in the full paper show our method for the temperature field is efficient to design the EHP.
Implementation of a Networked Control System with Multi-Communication Mode
Authors: Wang Hong Yuan , Ji Qi
Published: August 2013

In this article, a multi-dimensional adjustment target used in optical field is given, which is used to implement network control. The various constituent elements of electrically controlled design and implementation are described in details. Step motor is controlled by MCU and RS232 serial port. The light of integrating sphere is controlled by relay and RS485 serial port. Silicon detector is controlled by AD and RS232 serial port. The three parts are networked through the serial server finally. The control system with this method not only implements simply, but also can achieve remote operation. The approach is convenient in use.
Reliability Analysis of Posturography Using a Newly Developed Automatic Balance Calibration System
Authors: Chong Woo Suk , Lee Sun Yeon , Park Byung Hyun , Park Jong Kwan , Kwon Tae Kyu , Ko Myoung Hwan
Published: August 2013

The purpose of this study was to examine the reliability of posturography using a newly developed automatic balance calibration system (I Balance S (CyberMedic Co., Korea)). Twenty-three patients who volunteered participated in this study. Mean center of gravity (COG) sway velocity, total distance, maximum velocity (MV), average movement degree (AMD), maximum excursion (ME) and directional control (DC) were measured by I Balance S. Overall stability index and overall directional control score were measured by Biodex Balance System (Biodex Medical Systems Inc., New York, USA). For the accurate measurement, the COG was automatically calibrated to zero before each measurement by I Balance S. Each subject was tested twice by examiner A and once by examiner B. The intraclass correlation coefficients (ICC) were calculated to assess the inter-rater and intra-rater reliability. Inter-rater reliabilities were higher with the I Balance S (ICC, 0.80-0.91) than with the Biodex Balance System (ICC, 0.71-0.82). Intra-rater reliabilities were similar between the I Balance S (ICC, 0.88-0.94) and the Biodex Balance System SD (ICC, 0.90-0.91). I Balance S using an automatic balance calibration system is a reliable posturography method for performing balance assessments.
Electric Hydraulic Power Steering System Simulation Study
Authors: Wang Jun , Xu Li Chao
Published: August 2013

Properly controlling electro hydraulic power steering system can improve steering performance. The relation of motor speed, vehicle speed and steering speed is gained, according to the influence of motor speed on the steering performance. The force and angle input is set in the driver input model. Rotary valve is simulated by four orifices. The steering resistance between tire and ground is simulated by the coulomb friction on two tips of the rack. The method of double closed-loops PID is used to control the motor. The influence of the control strategy on the steering performance is realized by the simulations of three typical situation, which includes steering portability, road feel, the speed of assist force response and its stability. The results of simulation validate the availability of the control strategy, which is the basic of optimization.
Design of Piping Functionality for ARM Based Multi-Process Mono-Kernel Embedded OS
Authors: Qu Bo
Published: August 2013

This paper describes the design and implementation of piping functionality for ARM based multi-process mono-kernel embedded operating system, including overview of inter-process communication, key techniques of designing piping routines such as getting i-node for piping, creating pipe, reading and writing pipe, and terminating pipe, etc. At the final, the paper provides a demo example to show the effect. Based on the piping routines described in this paper, more powerful shell interpreter with redirecting and piping functionalities as well as other shell commands analogous to that of embedded Linux can be implemented.
The Research and Application of MapReduce Based Neighbor Model in Personalized Recommendation
Authors: Peng Jian Xi , Liu Zhi Yuan
Published: August 2013

Personalized recommendation provides convenience to users and brings more benefit to companies as well. It has been an important part of electronic commerce website. Collaborative filtering is a common algorithm in recommendation system. But with massive data ages coming, traditional collaborative filtering algorithm could not finish recommendation in time. A neighbor model algorithm based on MapReduce distributed computing framework is presented against to collaborative filtering algorithm. The presented algorithm could accomplish the personalized recommendation effectively and meet the real time requirement completely. The simulation shows that the algorithm has high efficiency and could complete the recommended in a highly efficient and real-time.
Web System Design Oriented EBOM
Authors: Si Xiu Li , Li Wei Wei
Published: August 2013

Approximate but different EBOM encode rules be used in different enterprises. To solve the enterprise in the processing of EBOM data from source SAP system and also keep the low cost, on basis of research and analyze the internal users requirement, design and develop an ASP.NET Web system for EBOM processing. The system acts as the role of middleware between SAP systems, which convert EBOM data from source SAP system to the format that target SAP system accept, and then import into the target.
The Software Design of Underground Mine Personnel Management System
Authors: Zhao Si Hai , Dong Wei Kang , Guo Ge , Gao Ji Ye
Published: August 2013

According to the requirements of National security Supervision department,aimed at the low safety factor and the backward of personnel management, a coal mine underground personnel management system has been developed. The system adopted the Industrial Ethernet and CAN bus for transmission medium, disposed and managed the data from substation in time. This article introduced the framework of Design software and the main functions module of the software and database structure.
Construction and Match of Question Templates Based on Domain Ontology and Semantic Block
Authors: Zhu Xin Hua , Gong Cheng , Chen Hong Chao
Published: August 2013

Compared with other methods, the question sentences processing method based on sentence-template match avoids complex lexical, syntactic and semantic analysis, but the size of the question template library is the key. To solve this problem, this paper used domain ontology and semantic block to build question templates, and added synonymous question templates into question model, then proposed a question template matching algorithm based on the semantic similarity, length similarity and sequence similarity. The experimental results show that this method greatly improves the success rate to extract the semantic features of users question sentences.
The Feature Analysis of Commonly Used Search Engines and Strategy of Information Retrieval in Sci-Tech Novelty Retrieval
Authors: Du Yun , Zhang Wei , Xiao Wen , Chen Shen Jing
Published: August 2013

Indexed search engine is one of most commonly used information retrieval tools in the novelty retrieval, but in practice there are some problems: search results are too complex, precision rate is not high, the way of indexing is not uniform, and poor compatibility. In this paper, we have examined the performance evaluation of the characteristics of commonly used search engines in novelty retrieval and proposed some search strategy countermeasures.
Design of S-Box Based on the Discrete Chaos Synchronization Systems
Authors: Han Dan Dan , Zang Hong Yan , Min Le Quan
Published: August 2013

Based on the theorem of generalized synchronization for discrete chaos systems, a new discrete chaos synchronization system was designed. Using the new system and the properties of sensitive dependent on initial condition, a novel S-box generation approach was proposed. An affine transformation was used to shuffle S-box. Testing the cryptographic properties shows that the S-box generated in the proposed algorithm has sound cryptographic performance.
Stability of Quadratic Functional Equation in Fuzzy Banach Space
Authors: Zhan Xiao Jing , Ji Pei Sheng
Published: August 2013

In this paper, we investigate the Hyers-Ulam stability of the functional equation ƒ(2x+y)+ƒ(2x-y)=8ƒ(x)+2ƒ(y) in fuzzy Banach space using the fixed point method.
Gas Pipeline Corrosion Prediction Based on Modified Support Vector Machine and Unequal Interval Model
Authors: Zhang Wei Dong , Shen Bin , Ai Yi Bo , Yang Bin
Published: August 2013

The corrosion is an important problem for the service safety of oil and gas pipeline. This research focuses. This paper proposed a new prediction algorithm on corrosion prediction of gathering gas pipeline, which combined modified Support Vector Machine (SVM) with unequal interval model. Firstly, grey prediction method with unequal interval model was used to pretreatment original data because there is unequal interval problem in actual collected data of pipeline. Secondly, improved Support Vector Regression (SVR) based on Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) has been proposed to resolve parameters selection problem for SVR. Finally, the corrosion prediction model of gas pipeline has been proposed which combined improved SVR and unequal interval grey prediction method. The experiment results show this algorithm could increase precision of the pipeline corrosion prediction compared with the traditional SVM. This research provides reliable basis for in-service pipeline life prediction and confirming inspecting cycle.
Analysis of Surface Morphology in Work Hardening of High-Speed Milling Based on Dislocation Theory
Authors: Yang Wen Jie , Wang Su Yu , Du Yuan Chao , Ma Lin Lin
Published: August 2013

Work hardening is an important index for the evaluation of the machined surface quality in high-speed milling. The morphology of work hardening can be visually observed by the metallographic pictures of high-speed milling gained from the scanning electron microscope which includes the lattice distortion and cracks etc. Forming mechanism of lattice distortion and micro crack of micro morphology under the workpiece surface is analyzed according to the dislocation theory; meanwhile, the effects on surface quality of the microstructure of the work hardening layer are discussed, which have important guiding significances on improving the surface quality and prolonging the service life of the parts.
Monitoring System of Truck Crane Boom Lifting and Slewing Operating Reliability
Authors: Fu Han , Wang Shu Mao , Ding De Wei
Published: August 2013

The subject of boom lifting and slewing need to repeat ten hundreds times in truck crane operating reliability, resulting in lasting for dozens of days. It is difficult for the inspection officials to supervise the entire procedures, which influences the objectivity of examination. A monitoring system was developed based on virtual instrument technology. It consisted of the load lifting height detection nodes, boom slewing counter module and data collector, etc. The height was measured by two relative-distance wireless nodes which are based on CSS (Chirp Spread Spectrum, CSS) technology. The boom slewing count was achieved by logic circuit. The signal of it was input by two sensors which were distributed at 180°. The height and count were transported to data collector via wireless network. The number of cycles of boom lifting and slewing was automatically judged by client software in data collector based on the height and slewing count. Preliminary experiments were conducted. A total of 800 experiments were tried and 793 times were successfully counted. The accuracy was 99.1%. The results show that the system can meet long-term demand for reliability test effectively. It is helpful to reduce labor intensity and guarantee the authenticity of examination.
Workspace Analysis and Parameter Optimization of 3-DOF Parallel Mechanism
Authors: Fan Rui , Liu Huan , Wang Dan
Published: August 2013

A spatial 3-DOF translational parallel mechanism is analyzed. Its inverse kinematic model is established. The section view of the workspace of the parallel mechanism is presented via boundary search method under the defined constraints. Considering the workspace volume as the optimization object, the relationship between structural parameters and workspace volume is obtained and the structural parameters to be optimized are determined. Finally, the optimization configuration of the mechanism is obtained. The results show that the volume of the workspace increases 1.55 times as much as the original volume, which lay the foundation for the architecture design.
Study on Optimal Scheduling Methods of Urban Drainage Pumping Stations Based on Orthogonal Test
Authors: Liu Jing Sen , Cheng Ji Lin , Gong Yi
Published: August 2013

An optimal scheduling method of urban pumping stations was proposed to cut down the energy cost.Using this method, pumping stations in the drainage area were divided into groups,and the scheduling period was divided into several computation periods,and several operation schemes were fixed in each group. In each computation period, groups were regarded as test objects,and operation schemes as test levels, and scientific tests were carried out with the help of orthogonal test table. Choosing the ratio of drainage volume and power consumption as the objective function, the best theoretical operation scheme should be found out through the orthogonal analysis.Using the unsteady flow model to calculate each river water level, and if each river water level was within the allowable variation amplitude, then the scheme was optimal and feasible; otherwise, adjust the test level according to the main-to-secondary sequence to obtain the optimal operation scheme. Taking 20-year frequency storm in one region of Shanghai city as a study case, total electric power consumption could be reduced more than 1/4 with the optimal scheduling method compared with the traditional one.
Research of Excel VBA Teaching Based on Computational Thinking Ability Training
Authors: Liang Hui , Li Hua
Published: August 2013

Recently, higher education has seen an increasing emphasis on the prominent role of computational thinking in computer fundamental education. Computational thinking is taken for the fundamental skills for everyone, not just computer scientist, to learn and use. How to develop students capacity for computational thinking during the teaching process is one of the basic goals of computer fundamental education. Using Excel VBA course teaching as example, in this paper, we discuss how to understand the essence of computational thinking and how cultivate the computational thinking ability of students.
Research on the Transport Line of the Trackless Rubber Tire Vehicle Underground Coal Mine
Authors: Guo Feng , Gao Feng , Guo Shuai , Ma Hong Gang
Published: August 2013

This paper countered with the problem of the trackless rubber tire vehicle transport traffic jam in coal mines auxiliary transportation system at present, based on the transport characteristic of the trackless rubber tire vehicle and different transport roadway underground, putting forward the planning and research method of the trackless rubber tire vehicle transport line in the coal mine. The research has very important practical significance to realize reasonable scheduling of the trackless rubber tire vehicle underground the coal mine.
Autonomous Robots Path Planning: An Adaptive Roadmap Approach
Authors: Elbanhawi Mohamed , Simic Milan , Jazar Reza
Published: August 2013

Developing algorithms that allow robots to independently navigate unknown environments is a widely researched area of robotics. The potential for autonomous mobile robots use, in industrial and military applications, is boundless. Path planning entails computing a collision free path from a robots current position to a desired target. The problem of path planning for these robots remains underdeveloped. Computational complexity, path optimization and robustness are some of the issues that arise. Current algorithms do not generate general solutions for different situations and require user experience and optimization. Classical algorithms are computationally extensive. This reduces the possibility of their use in real time applications. Additionally, classical algorithms do not allow for any control over attributes of the generated path. A new roadmap path planning algorithm is proposed in this paper. This method generates waypoints, through which the robot can avoid obstacles and reach its goal. At the heart of this algorithm is a method to control the distance of the waypoints from obstacles, without increasing its computational complexity. Several simulations were run to illustrate the robustness and adaptability of this approach, compared to the most commonly used path planning methods.
IR-LEACH: An Improved LEACH Protocol for WSN
Authors: Tang Gao Ming , Li La Yuan , Gao Ji Peng
Published: August 2013

Wireless sensor is a miniature battery powered device with limited energy; It contains a large number of the wireless router sensors in wireless sensor networks. Once these batteries placed in these sensors and deployed to the environment, we would be very difficult to artificially replace the battery, run out means of wireless sensor networks "death", so the battery energy is very precious. The energy levels of the network, in other words, to extend the life of the wireless sensor networks, has become an important research focus and design challenges. Today, LEACH is the most representative and most influential representation algorithm in the Topology control method field. To improve LEACH algorithm, Our novel IR-LEACH uses a new cluster head percentage of 3.79%; redefine the concept of round; cluster head transmission of data using a multi-hop transmission; TTL data segment is added to the cluster-head data. Simulation results display that IR-LEACH implement the above discussed improvements effectively and efficiently and improves the network lifespan over LEACH.
A Novel Estimation Method of Fatigue Using EEG Based on KPCA-SVM and Complexity Parameters
Authors: Xiong Yi Jun , Zhang Rong , Zhang Chong , Yu Xiao Lin
Published: August 2013

In this study, Kolmogorov complexity (KC) and approximate Entropy (AE) were adopted to characterize the irregularity and complexity of EEG data. Fifty subjects were instructed to perform two different mental tasks to induce two kinds of fatigue states. Then the Kernel Principal Component Analysis (KPCA) and Support Vector Machine (SVM) are combined to differentiate these two states. The KPCA was used to extract nonlinear features from the complexity parameters of EEG and to effectively reduce the dimensionality of the feature vectors. SVM was used to classify two fatigue states. The experimental result shows that complexity parameters are significantly decreased as the fatigue level increases, which suggests that the proposed parameters can be used to characterize mental fatigue level. Furthermore, compared with several typical classification models, the joint method KPCA-SVM can achieve higher classification accuracy (85%) of mental fatigue with less training and classifying time, which indicates that KPCA-SVM is suitable for the estimation of mental fatigue.
Study on the Rock Slope Landslide Caused by Earth Penetrating Weapon Explosion
Authors: Hao Jie Zhong , Shi Cun Cheng , Li Jie , Sun Yun Hou
Published: August 2013

The rigid limit equilibrium method can be used to analyse the slope stability under the earth penetrating weapon explosion. The explosion seismic inertia force is equivalent by the equivalent static loading method and seismic attenuation is also taken into account, and then the calculating formula is got. The calculation of the example indicates that the stability coefficient increases as the potential sliding rock mass volume increasing and the critical sliding point is corresponding to the maximum sliding rock mass volume. The impact point and explosion center depth influence the slope sliding.
Fabrication and Mechanical Properties Study of the Magnetorheological Elastomer
Authors: Li Guang Hui , Huang Xue Gong , Gu Xiao Yu , Wang Jiong
Published: August 2013

Magnetorheological elastomer (MRE) is a novel kind of magnetorheological materials and has been successfully used to control the structure vibration due to its property of variable stiffness under different magnetic field. In order to improve the properties of MRE, it urgently needs to investigate the preparation methods of MRE and build a corresponding test system to evaluate the performance of MRE in different operating modes. In this paper, different magnetic devices for preparing MRE were studied and designed, and the material was fabricated by the permanent magnets with additional permeability equipment at last. Then, according to the SDOF principle, a novel test system was built in order to investigate the mechanical properties of MRE, and exact close-form expressions of the stiffness, loss factor and other mechanical parameters of MRE, under different magnetic field, have been calculated to analyze the properties of MRE.
Interface Cracking and Fracture in As-Roll-Bonded and Heat-Treated 3-Ply Cu/Al/Cu Hybrid Plate
Authors: Kim In Kyu , Hong Sun Ig
Published: August 2013

The interface cracking and fracture behaviors of as-roll-bonded and heat-treated 3-ply Cu/Al/Cu clad metal were investigated Interfacial intermetallic layer were observed to be formed at the Cu/Al interface upon annealing at and above 300°C. The presence of Cu9Al4, CuAl, Cu3Al2 and CuAl2 at the Cu/Al interface was confirmed by XRD. The intermetallic reaction layer has a detrimental effect on the bonding strength of the Cu/Al/Cu clad metal, inducing interface cracks. The length of the delaminated region increased with increasing heat treatment temperature. No strain incompatibility and cracks were observed across the interface in the as roll-bonded clad composite and, for annealed clad composites at 300°C, some appreciable strain incompatibiliy developed, starting to form interface microcracks. For annealed clad composites at 450°C, the interface crack opened wide up with strain because the separated Cu and Al plate deform, developing their independent necks and fracture independently.
Modal Characteristics of Compressor Blades Considering Fluid-Solid Interaction
Authors: Luo Qing Guo , Si Dong Ya , Ran Zheng Guang , Wang Xu Dong
Published: August 2013

An accurate three-dimensional flow passage model of the compressor has been created; the stress distribution of the main flow channel has been obtained. The aerodynamic force was applied to the impeller blades. Three kinds of loads were applied to the main blades and splitter blades. Modal characteristics of the compressor blades have been intensively studied.
Comparison of Bending Stress of a Helical Gear for Different Materials and Modules Using AGMA Standards in FEA
Authors: Prabhakaran S. , Ramachandran S.
Published: August 2013

Gearing is one of the most critical components in mechanical power transmission systems.. This paper explains about the comparison of the geometry of Helical gears for two different modules by modeling and mathematical equations, load distribution at various positions of the contact line and the stress analysis of Helical gears using three-dimensional finite element method. The bending stresses were examined using three-dimensional finite element model.. These stresses of different modules obtained from the finite element analysis were compared and the considerable reduction of weight occurred was found and also the values are compared with the theoretical values. Both results agree very well. This indicates that the finite element method model is accurate.
Investigations on Low Environmental Impact Machining Processes of Free Cutting Austenitic Stainless Steels
Authors: Li Zhuang , Wu Di , Lv Wei , Zheng Zhen , Kang Shao Pu
Published: August 2013

In the present paper, sulfur, RE (rare earth) and bismuth were added to an austenite stainless steel. Low environmental impact machining processes of free cutting austenitic stainless steels was investigated by machinability testing. The results show that a significant amount of grey and dispersed inclusions were found in steel B. The inclusions are typical sulfide inclusions, and bismuth element is attached to double end of manganese sulfide inclusions. Some inclusions exhibit globular shape due to the presence of rare earths elements in steel B. Chip morphology was improved in steel B under the same turning conditions. The machinability of steel B is much better than that of steel A. This is attributed to the presence of free-cutting additives of sulfur, RE and bismuth in the austenitic stainless steels. Satisfactory mechanical properties were also obtained under the conditions of our experiments. The reasons why satisfactory mechanical properties were obtained may lie in that the sulfides and bismuth are soft phase, and the presence of rare earths elements contributes to the improvement of the toughness of the austenitic stainless steels.
Effect of Dimensional Size on the Electrical Voltage Generation Property of PZT Piezoelectric Ceramic
Authors: Chure Ming Cheng , Wu Long , Wu King Kung , Lin Yu Chang , Wu Meng Jiun , Tung Chia Cheng , Lin Jui Sheng , Ma Wu Chung
Published: August 2013

In this study the relation between output voltages of PZT piezoelectric ceramic body with applied impact mechanical energy are studies. The output voltages of PZT piezoelectric ceramic body are increased with the increasing of the applied mechanical energy. Under the same impact mechanical energy, the output voltages of the PZT piezoelectric ceramic body are depending on both the dimensional size and properties of the samples. The PZT piezoelectric ceramic body with greater (t/D2) can produce a higher output voltage. With the same piezoelectric ceramic body size, under the same impact mechanical energy, the output voltage of soft type piezoelectric ceramic body is higher than that of hard type piezoelectric ceramic body, which is because the g33 value of soft type piezoelectric ceramic body is higher than that of hard type piezoelectric ceramic body.
Effects of Fly Ash/Slag Ratio and Liquid/Binder Ratio on Strength of Alkali-Activated Fly Ash/Slag Mortars
Authors: Chi Mao Chieh , Liu Yen Chun
Published: August 2013

The purpose of this study is to investigate the effects of fly ash/slag ratio and liquid/binder ratio on strength of alkali-activated fly ash/slag (AAFS) mortars. Three liquid/binder ratios of 0.35, 0.5 and 0.65 and three fly ash/slag ratios of 100/0, 50/50, and 0/100 were selected as variables to design and produce mixes of AAFS mortars. The compressive strength and flexural strength of alkali-activated fly ash/slag mortars were discussed and compared with reference mortars produced using ordinary Portland cement (OPC) mortars. Based on the results, both fly ash/slag ratio and the liquid/binder ratio are significant factors influencing the strengths of AAFS mortars. The strength of AAFS mortars except alkali-activated fly ash mortars is higher than that of OPC mortars. When the fly ash/slag ratio reaches 50/50, the AAFS mortars possesses the highest strength compared with the other mortars.
Steel Billet Continuous Induction Heating – Numerical Model and Advanced Control
Authors: Kapusta Juraj , Camber Juraj , Hulkó Gabriel
Published: August 2013

Nowadays, the achievement of proper steel billets temperature profile is not the only design priority of induction heaters for hot forming applications. Due to its high operating costs, its design is constantly improving in terms of electrical and thermal efficiency. Therefore the more efficient multi-coil design starts to be more used in industrial practice. Numerical model of mentioned heater based on partial differential equations were solved by finite element method in virtual software environment. Primary goal of computer modeling was to investigate the thermal dynamics of four-module heater working in steady-state operation regime. Obtained data were applied to design an advanced control circuit based on distributed parameter systems theory. This may open up the opportunity to make further progress in induction heaters design.
RETRACTED: Structure Optimization of High-Speed Machining Center Workbench Based on Bionic Design and Hierarchical Optimization Techniques
Authors: Xiang Fei Fei , Xiang Zhong Ke , Li Hong Ying
Published: August 2013

Retracted article: We aimed at high speed machining center high machining accuracy and lightweight design requirements ,Then design the two different stiffened plate structure workbench, The one use traditional design method, the other use bionic design method; Optimize the dimensions of bionic stiffened plate design based on CAD/CAE system integration and hierarchical optimization techniques, got the optimal size; through the static analysis and modal analysis verify the superiority of the optimization schemes.
Pavement Performance Prediction Model Based on Weibull Distribution
Authors: Peng Ting , Wang Xiao Ling , Chen Shuan Fa
Published: August 2013

The Weibull distribution is an ideal model for failure analysis. In this work, it is applied to simulate pavement performance regression process. Then, pavement performance prediction model is constructed according to the Weibull distribution. Historical pavement performance data are used to evaluate the practical performance of the model. According to the experimental results, ideal performance is obtained. It provides more accurate results compared with the previous work.
Electrolyte Plasma Nitriding of High-Speed Steel
Authors: Skakov Mazhyn , Rakhadilov Bauyrzhan , Sсheffler Michael , Karipbayeva Gaukhar , Rakhadilov Merey
Published: August 2013

Developed a new method of electrolytic-plasma nitriding, which enable to carry out surface modification of high-speed steels and provide the high kinetic energy efficiency of diffusion saturation process. . Implementation of electrolytic-plasma nitriding of high-speed steel R6M5 in the optimal mode was determined, which leads to a significant increase in hardness and wear-resistance of the high-speed steel surface layer. It is experimentally established, that after nitriding of electrolytic-plasma heating on the surface of high-speed steel R6M5 formed the modified layer, which has high abrasive wear resistance as compared with the source material.
Justification of Creation of an External Propulsor for Multipurpose Shield-Type Heading Machine – GEO-WALKER
Authors: Aksenov Vladimir V. , Khoreshok A.A. , Begljakov V.Yu.
Published: August 2013

The work describes the features of process of mine working with application of geo-walkers, defines a number of tasks for determination of parameters of an external propulsor and proves their urgency
Analysis of Over-Voltage Failure in the Computer Room
Authors: Niu Shuang Guo , Wang Lei , Wang Meng Chun
Published: August 2013

Because the over-voltage failure often occurs in the computer room, which is caused by the centerline cut in the case of three-phase load current unbalanced, and is brought by high-order harmonic. So we calculated, analysised and proved its cause and harm in electrical theory, and we have put forward some effective countermeasure to prevent the over-voltage.
A Vague Sets Based Approach of Multi-Sensor Information Fusion for Urban Ambient Air Quality Monitoring
Authors: Li Jin Gang , Su Xiao Hong , Xuan Hong Wei , Zhao Shi Lei
Published: August 2013

In order to enhance the organization and management efficiency of multi-source heterogeneous data in the collection process for urban ambient air quality monitoring, according to the analysis of the limitations, the existing methods and the features of data collected, a new kind of multi-sensor and multi-level information fusion approach based on vague sets is proposed. The approach takes full advantage of the redundancy and complementarities from inter-level information to achieve the purpose of information integration. The mathematical description of vague sets based on the multi-sensor information fusion is defined and the corresponding model is developed in which the data organization and the monitoring method and the implementation of the hierarchical algorithm are discussed. Finally, the proposed approach is applied to a computing system of the ambient air quality monitoring. The study of this approach can supply scientific accordance for comprehensive monitoring of urban ambient air quality.
Comparison of Tikhonov Regularization and Adaptive Regularization for III-Posed Problems
Authors: Dong Wen , Sun Tao
Published: August 2013

nverse problems are important interdisciplinary subject, which receive more and more attention in recent years in the areas of mathematics, computer science, information science and other applied natural sciences. There is close relationship between inverse problems and ill-posedness. Regularization is an important strategy when computing the ill-posed problems to maintain the stability of the computation.This paper compares a new regularization method,which is called Adaptive regularization, with the traditional Tikhonov regularization method. The conclusion that Adaptive regularization method is a stronger regularization method than the traditional Tikhonov regularization method can be made by computing some numerical examples.
Agent-Based Simulation Method of Complex System
Authors: Lai Jia Zhe , Liao Shan Liang
Published: August 2013

In this paper a method is introduced to simulate the Complex system by ABMS . space system can be considered a complex system that is composed of many satellites ,which need a powerful and flexible method to study , MAS structure of space system is gived by analyzing its hiberarchy , by studying the navigation agent , a typical agent structure is gived . introduce the RepastHPC agent platform using MPI , orbit forecasting method is studying , Finally, we realize the MAS simulation and run it on parallel cluster .
Ontology-Based CRM for Bank Customers
Authors: Yang Yu Xin , Tang Da Quan
Published: August 2013

This paper introduces an ontology-based CRM for the commercial use, which specifically is for commercial bank customers. By using the ontology modeling method, which includes competency questions, intuitions, axioms and specific model, this ontology can share the information between the commercial banks and their customers. Ontology for the commercial banks domain is being developed as relationships and facts of the architecture. The steps of developing such an ontology model and a mapping mechanism between the commercial bank's customers and ability of consuming are discussed.