bluuebunny/crossref_metadata_2025 huggingface dataset:
A Compact Lowpass Filter with Four Transmission Zeros Using Single-Sided Compact Microstrip Resonator Cells
Authors: Zhao Kai Yu , Li Lin
Published: March 2012

A compact lowpass filter using two single-sided compact microstrip resonator cells （CMRCs）with low insertion loss and broad bandwidth is presented. The cutoff frequency is about 1.4 GHz, the insertion loss is less than 0.6 dB and the 20dB bandwidth is up to the range from 2.1 GHz to 9.8 GHz by means of introducing four transmission zeros through two CMRCs. In addition, the simulated results demonstrate that the proposed filter is characterized by a compact size, low insertion loss, sharp transition, low return loss and wide bandwidth.
Study on Mass Loss of Ludwigite in the Process of Carbothermal Reduction
Authors: Liu Ran , Wang Xing Juan , Gao Yong Liang , Lu Qing , Xue Xiang Xin
Published: March 2012

Using ludwigite as raw material, mass loss of ludwigite on the procedure of carbothermal reduction was studied. The effects of reduction temperature, carbon content, holding time were investigated by orthogonal experiment. Reduction temperature was the most influential factor for affecting the mass loss of ludwigite. The experimental results showed that the mass loss rate of samples increases with rising temperature, of which the maximum is 52.6wt% in the range from 1410°C to 1470°C. Mass loss rate of magnesia in ludwigite went up to 98.0% because it was reduced as gaseous magnesium vapor in the process of carbothermal reduction. The main phase of the reduction product was Fe2B, FeB and SiC. The paper can provide significant references for selective separation of valuable elements form ludwigite.
Control System of Automatically Leveling Based on DSP
Authors: Huang Lan , Chen Chon
Published: March 2012

The thesis developed a DSP -based automatically leveling control system of four of the supporting for a two -phase hybrid stepping motor which includes the introduction of the leveling strategy, the composition and the design of software based on the TMS320F2812.Practice proved that the system is a comparatively new system leveling easy to realize. The leveling precision of the system is less than six cent and the leveling time is less than five minutes.
The Study of Submerged Arc Welding Power Based on DSP
Authors: Li Chun Tian , Du Chang Hua , Xu Hui Bin , Luo Yi
Published: March 2012

The main and control circuit of submerged arc welding (SAW) power, which is mode of full-bridge and IGBT, is designed based on DSP (Digital Signal Processor). The designing include sub-modules based on DSP such as the sampling signal circuit, the control circuit for external characteristics, the PWM (Pulse-Width -Modulation) control circuit of SAW power, the IGBT drive circuit and etc. This designing can strengthen the reliability of feedback regulation property on SAW power, can enhance the stability of the parameters from the power system. The experimental result shows that the designed welding power has good feedback regulation and stability properties during the SAW process.
Study on Themal and Rheological Properties of POM
Authors: Guo Zhi Hong , Wen Zhen Xi , Xu Qing Yan , Tian Yuan , Qiu Gao , Wang Yi Min
Published: March 2012

Polyoxymethylene is a linear polymer with excellent performance due to its chemical structure and high crystallinity. The thermal and rheological properties of POM are investigated in this paper. Experimental results indicate that the melting point and decomposition temperature of POM are about 162 °C and 266 °C respectively. POM melt is a non-Newtonian fluid, the apparent viscosity gradually decreased with the increase of shear rate, showing a typical shear-thinning behavior. Non-Newtonian index increased from 0.53 to 0.61 as the melt temperature increased from 190 °C to 230 °C. The flow activation energy of POM melt is between 11.36 and 24.90 kJ/mol within the shear rate range of 90~2500s -1.
Shakedown and Limit Analysis of Crack Structure Based on Simple Models
Authors: Cui Jin , Zhang Le Le
Published: March 2012

For the loading capability of structures with cracks, the simply calculational models of structures with triangular and rectangular crack have been established, under considering the local rounded area of the crack tip in this paper. The calculation of limit/shakedown domains has been successfully done based on the method of interior point. The influence of some factors such as crack shape and tip size on the loading limit and shakedown of structure has been analyzed and compared, and the results are the trial foundation of intensive study about crack structures.
Digital Image Edge Detection Method in the Application of the Beam Displacement Measurement and Damage Detection
Authors: Yuan Xiang Rong , Liu Ming , Cai Ka Hong
Published: March 2012

The images of the simply supported beam in different deformation state captured by digital camera are processed. The polynomial function is used to fit the grey level near the edge of the beam in image. The edge is located by calculating the derivative of the fitting grey level. The identified edges in different deformation states are compared to measure the displacements along the edge of the beam. The second order derivative of the measured deflection curve is calculated to obtain the strain of the beam. The abnormal change in the strain data series is used to identify the damage of the beam. It can be shown in the model test results that the image method used here are useful in structure measurement and damage detection.
The Design, Manufacture and Wind Tunnel Test of the Full Aircraft Transonic Flutter Model
Authors: Qian Wei , Guan De
Published: March 2012

This paper discusses the design, manufacture and wind tunnel test of a full aircraft structure similar transonic flutter model in the wind tunnel FL-26. It introduces the mechanics hypothesis, use of materials, and design methods of this model design, in which it uses a technology of dynamic finite element model’s flexibility-mode collaborative correction. In the process of the model, it adopts glass fiber, carbon fiber reinforced plastic and foam for manufacturing of dynamics similar model. After simulation calculation of the model, transonic flutter wind tunnel test of the model is finally accomplished in the wind tunnel FL-26.
An Algorithm for Testing Isomorphism of Planer Graph Based on Distant Matrix
Authors: Wu Yan Peng , Liu Shui Qiang
Published: March 2012

The testing for graph isomorphism is one of the many problems in the subject of graph theory. This thesis proposes an algorithm for testing isomorphism of planer graph of polynomial time via structuring characteristics of planer graph based on distance matrix. The algorithm, with a time complexity of O (n^4) and a space complexity of O (n^2), has a great application value.
Mass Customization–Oriented Module Combination Method
Authors: Sheng Zhong Qi , Liu Yu Chang , Jin Yan , Liu Yong Xian
Published: March 2012

For the modular design in manufacturing paradigm of mass customization (MC), module combination is a complex process. To the study on this problem, this paper put forward a module combination method based on module family model. Based on the module family model and tree-type storage structure, this method used a “most similar module" search algorithm to carry out the module search, and applied analytic hierarchy process(AHP) to construct the hierarchy model for the evaluation of module combination configuration program. This module combination method has some theoretical and practical ignificance.
Blow Molding Process Optimization of Amorphous Alloy Tube Blank Based on DEFORM Software
Authors: Guo Yu Qin , Yang Xin , Han Juan Juan , Chen Wei
Published: March 2012

In recent years, with the increase of the research about forming technology of amorphous alloys, blow molding is explored to process the amorphous shell parts and containers both at home and abroad. Jan Schroers of Yale University found that it can improve the formability of amorphous alloys greatly by adjusting the thickness of plate blank and prefabricating parison. In this article, choosing Zr44Ti11Cu10Ni10Be25 as the study object, plate blanks with variable thickness are prefabricated to optimize the uniformity of the wall thickness of tube blank molded and studies the effects of blowing pressure and material viscosity on the formability of tube blank based on DEFORM software, so as to define the reasonable process parameters, provide theoretic foundation for blow molding process optimization of bulk metallic glasses (BMGs) plate and develop the industry application fields of BMG materials.
Study on Dynamical Modulus and Damping Ratio of Lime-Treated Soil
Authors: Wang Min , Kong Ling Wei , Wang Xiao Yan
Published: March 2012

In order to study dynamic properties of lime-treated expansive clay, a comprehensive series of laboratory tests were conducted via dynamic triaxial test system. The influences of factors such as moisture content, confining pressure, vibration frequency, consolidation ratio and the number of cycles on dynamic characteristics were discussed. It is found that the dynamic stress-strain curves of lime-treated expansive clay show the general trend of hyperbola. Compared with the remoulded expansive soil, the bearing capacity of lime improved expansive soil is higher than remolded soil.
Synthesis and Properties of Copolymer of p-Hydroxybenzoic Acid and Sulfanilic Acid Using Horseradish Peroxidase
Authors: Lv Sheng Hua , Rui Gong , Li Di
Published: March 2012

A novel copolymer of p-hydroxybenzoic acid and sulfanilic acid (pHBA-SAA copolymer) was synthesized by free radical copolymerization with horseradish peroxidase (HRP)/HB2BOB2B as initiator. The effects of the proportion of monomers, the amount of catalyst, reaction temperature and time on copolymer performance were investigated. The structure of the copolymer was characterized with FTIR, NMR and GPC. Shrinkage temperature (TBsB) of the leather tanned with the copolymer was 81.5°C. The thickness increment ratio of the retanned leather was 23.23% and meanwhile the retanned leather showed better softness and exceptionally good flexible. The results indicated that the graft copolymer has excellent retanning properties and particularly suited to be served as retannage substitute for chrome and resin retannages in making leather process.
Determination of PCB Residues in Vegetables by GC-MS
Authors: Liu Tie Bing , Tu Hai Yun , Han Li Ming , Yuan Qiu Ping , Duns Greg
Published: March 2012

This paper examines a method for the simultaneous detection of 12 different dioxin-like polychlorinated biphenyl (PCB) residues in vegetables. A qualitative and quantitative determination of PCB residues in vegetables was undertaken by a combination of high-speed freezing centrifugation, solid phase extraction, purification, concentration, and GC- MS and GC-ECD. From this combination of methods, 12 different PCBs were detected in vegetables over a linear concentration range of 0.001 to 2 µ g/L (ppb), with detection limits ranging from 0.4ppb to 0.5 ppb, a linear correlation coefficient of 0.99, recoveries ranging from 96.25%-117.5%, and a relative standard deviation ≤ 21%(RSD) .
Microcontact Printed Protein Micropatterns on Titanium Surface Characterized by Confocal Laser Scanning Microscopy
Authors: Pan Chang Jiang , Nie Yu Dong , Dong Yun Xiao
Published: March 2012

In this paper, two kinds of stamps (squares (a×a)) separated by spacing b, the values of a and b were varied from 2.5 µm to 50 µm), i.e. positive and negative stamps, were prepared. The stamps inked with the rhodamine-labeled bovine serum albumin (BSA) were then microcontacted with the aldehyde-functionalized titanium surfaces. Water contact angle and X-ray photoelectron spectrum (XPS) indicated that BSA can be covalently immobilized on aldehyde modified titanium surface by microcontact printing. The experimental results of CLSM showed that the patterns with resolution from 2.5 µm to 50 µm were obtained successfully. Both positive stamp and negative stamp were deformed when the value of a was less than or equal to 5 µm, which resulted in replication errors. Furthermore, the larger spacing (50 µm) resulted in stamp collapse when the value a of the positive stamp was less than or equal to 10 µm, leading to whole fluorescence on substrates.
A Improvement Analysis Model Based on Fuzzy Parameters Reliability
Authors: Dong Fang Liang
Published: March 2012

Fuzzy Structure; Fuzzy Parameters; Reliability; Membership Function Abstract. This paper takes the fuzzy mathematics' reliability analysis as study object, has conducted the research to the fuzzy parameter system's reliability; comparing with traditional reliability analysis, obtained more precise fuzzy reliability confidence interval formula and carried on the proving based on cascade system, which has solved the computation complexity and the low precise problem in the tradition fuzzy reliability analysis's mass fuzzy operation. Method in the paper has certain promotional value in the fuzzy problem's research. It solved some problems such as the traditional fuzzy reliability analysis in the mass caused by the calculation of fuzzy computing complexity and low-precision. The emphasis of the article is divided into two parts: One is analysis and discussion on traditional module reliability analysis method and the fuzzy number membership function; the other one is proposing one new fuzzy parameter reliability analysis method and the conclusion, based on the former analysis.
Study on the Glass Beads Refractive Index Testing Technology
Authors: Ma Jun , Guo Dong Hua
Published: March 2012

this thesis discusses the main testing technologies at home and abroad relating to the glass bead refractive index, analyses the research emphases relating to the glass bead refractive index testing technology at present and point out the future research trend.
MEMS Sensor and Electrostatic Detection Technology in the Application of New Type Composite Fuze
Authors: Fang Li Qing , Chen Kai , Wang Hong Kai
Published: March 2012

This article through to the modern small-bore of empty weapons destroyed fighters of the mechanism of target analysis, according to improve small arms fire destroyed target empty the effective method of probability, based on the high value MEMS sensor and passive g static detection technology, this paper expounds the MEMS sensor and electrostatic detection technology in a new small weapons development to meet the demand of the empty the application of composite fuze. At the same time, to a certain extent, describes this composite fuze work mechanism and method, the composite fuze success can effectively enhance the development of weapons of small empty combat performance.
A Feature Extraction Approach of Traffic Congestion from Video
Authors: Yang Yuan Feng , Xian Xue Feng , Liao Li Li , Zhao Min Ya
Published: March 2012

To avoid the difficulty of collecting accurate traffic flow data, this paper proposes a novel approach for congestion features extraction from traffic video. The approach firstly segments the traffic video into shots and the shot motion content feature is extracted. Then, we extract the key frames applying an improved global k-means clustering algorithm. The last congestion feature of the global optical flow energy is computed based on the key frames. The numerical experiments on traffic surveillance video show the validity and high accuracy for traffic congestion detection using the propose method in this paper
Implementation of an Intelligent Integrated Detection System Based on Virtual Instrument for Different Missiles
Authors: Zhang Xiao Long , Yao Zhi Min , Wang Hong Yun
Published: March 2012

Aiming at the intelligent integrated detection System for test and measurement of many different missiles, utilizing the data acquisition technology, virtual instrument technology and signal analysis technology synthetically, in this paper, we introduced the system architecture and accomplished the hardware design and software implementation. Practical applications of the prototype system have proven that this intelligent integrated detection system has more powerful functions, better interaction and more convenient operation than the traditional automatic test system(ATS), it have met the needs of test and measurement of several different missiles
Fuzzy Comprehensive Evaluation on the Projects Risk Based Set Pair Analysis
Authors: Li Gao Yang
Published: March 2012

This paper builds projects risk evaluation index system, and makes the projects risk evaluation from a qualitative assessment to a quantitative evaluation; Then, Making use of the advantage about SPA and fuzzy comprehensive evaluation, index weights are made by the set pair analysis (SPA) model and projects risk of fuzzy comprehensive evaluation is built; Lastly, a case is used to show the combine of set pair analysis and fuzzy comprehensive evaluation for projects risk assessment feasible.
Equipment Fault Diagnosis Based on Incomplete Rough Sets Theory
Authors: Su Yan Qin , Gao Shan , Xu Ting Xue
Published: March 2012

There are redundant, incomplete and incorrect data in the equipment test data gained by the test equipments. The complete algorithms and attribution reduction algorithms were analyzed and the equipment fault diagnosis model based on Rough Sets Theory was given. Then, some equipment was diagnosed, and the results indicate that the diagnosis is effective and efficient.
Electronic Compass Calibration in Pedestrian Navigation System
Authors: Zhang Xiao Juan , Li Xi Sheng , Feng Yi Bo
Published: March 2012

In this paper, a kind of pedestrian navigation system (PNS) that based on Earth’s magnetic field is introduced, and the error of the build-in electronic compass is analyzed, and an efficient calibration algorithm is presented. The PNS is determined pedestrian’s movement locus by calculating the heading angle and analyzing the movement characteristic, and then using the dead reckoning algorithm to combine the information together. The precision of PNS is affected by the error of the electric compass, because the heading angle is calculated from the magnetic field data measured by the compass. In order to reduce the measure error, a direct method which is used to calibrate the compass, based on ellipsoid fitting, is developed.
Study on Technique of Tolerance Optimal Allocation Based on Adaptive Genetic Algorithm
Authors: Ai Yan Ting , Tian Jing , Zhang Feng Ling , Zhai Xue , Bai Shu Sheng
Published: March 2012

The rational allocation of tolerances is the key to reduce production costs and guarantee the performance. In this paper, in the premise of ensuring the performance, manufacturing cost minimization of assembly parts is set as objective function, and an adaptive genetic algorithm is proposed to optimize the design of tolerance allocation. The adaptive mechanism is introduced mainly for crossover operator and mutation operator to overcome the traditional adaptive genetic algorithm’s easy "premature" shortcomings according to individual fitness of population. And a penalty function is used to handle constraints of assembly dimension chain. Finally, using the algorithm to optimize assembly chain tolerances of a gear reducer shaft, the effectiveness of the adaptive genetic algorithm to optimize tolerance allocation has been verified.
Optimization of Regulation Methods in District Heating Systems
Authors: Jie Peng Fei , Li De Ying , Zhu Neng , Shen Jiao
Published: March 2012

The widely use of the heating system results in the sharp increase of the heating energy consumption. The optimization of the regulation methods for the heating system can efficiently save energy and improve the indoor temperature of the heat users. The traditional regulation methods include quality regulation, quantity regulation, intermittent regulation etc. The actual operation mode was compared with the actual operation mode, which proved that the traditional regulation methods were all static theoretical regulation methods. The regenerative property of the buildings was simulated using the fluent software. A new regulation method which is called quantitative regulation method is proposed in this paper.
The Study of the SVPWM Realization Method Based on DSPIC30F6010A
Authors: Zhao Li Yong , Zhang Bo
Published: March 2012

In this paper, the application of SVPWM technology in DSPIC30F6010A controller is studied. It describes the basic principles of voltage space vector (SVPWM). This paper uses DSPIC30F6010A to realize the SVPWM algorithm. Finally, through the experiments it proves the correctness and feasibility of the research
Study on the Application of Segmentation Algorithm Based on Medical Image Fusion
Authors: Li Jing Yu , Mu Wei Bin , Jin Cheng , Geng Kui , Zhang Shu Li
Published: March 2012

The medical image fusion technology has become a hot research field of medical imaging; the image segmentation is an important task in image fusion. Due to the diversity and complexity of the medical images, the medical image fusion technology has a big difficulty in image segmentation. Threshold method becomes an important image segmentation way due to its high efficiency and simple feature. However, for the segmentation of the complex medical images, the effect of the threshold method is far from being ideal. Powell algorithm is the best direct search way; the application of the improved Powell algorithm can search the target better. Therefore, the authors propose an image segmentation method that is based on variable threshold and combines with Powell algorithm. Through the simulation experiment, this method can segment the images rapidly and effectively, and features a strong robustness.
Design of Measuring and Evaluating System of Airport Support Vehicle Training Simulator
Authors: You Lu , Zhang Lu , Li Jian Li , Shi Xu Dong
Published: March 2012

An evaluating system is designed in order to evaluate the airport support vehicle drivers training effect and determinant the training result. The support vehicle approaching speed, impact force and contact position are measured and used as the evaluating factors. An expert system is utilized to evaluate the training effect and determinant the training result. The evaluating system is developed to apply.
A Study of Sustainable Design Based on Unconscious Behavior
Authors: Hu Xiao Tao
Published: March 2012

Nowadays, a lot of people engage in unsustainable daily behavior unconsciously, although most of them worry about the state of our natural environment. Designers can find ideas in people’s unconscious saving behavior and wasting behavior, and then realize these ideas into design. Based upon the case studies, the paper gives hints how to realize ideas derived from unconscious behavior into sustainable design.
A Study on Model of the U.S. National Environment Management
Authors: Cao Cai Hong
Published: March 2012

The U.S. national environmental performance partnership system (NEPP) includes national environmental policy planning system, performance partnership agreement (PPA) and performance partnership grant (PPG) three elements. National environmental planning policy establishes the highest level of environmental plans and objectives meanwhile monitor and evaluate the performances. PPA and PPG implement the plan to meet the goals. With the status of environmental management in China, the U.S. NEPP system can inspires our government mainly in four aspects: to bring all levels of governments into play, to create specific targeted environmental protection activities, to found a sound monitoring and evaluation system and to form the test data Scientifically
Analysis of Brockmann’s Posters Based on Geometry of Design
Authors: Xue Yan Min , Han Qing Liang , Wang Jian Hang , Bai Rui
Published: March 2012

Josef Müller-Brockmann was a Swiss graphic designer and teacher, who is famous of his use of typography. This paper systematically analyzes his six poster works from the perspective of design geometry. The posters’ titles are ‘Junifestkonzert’,‘Tonhalle Quartett’,‘Der Nussknacker’,‘Musica Viva’,‘Helmhaus Zurich’ and ‘Protegez L Enfant’. In these posters, different geometric elements are used in delicate, planned ways to express specific themes. Format, proportion and scale are the main focus of the analysis. Auxiliary lines are used to show how geometry is used to create beautiful art. This paper is intended to help designers understand the ways in which geometry can be applied to graphic design, creating works with strong visual dynamics and easily recognized focal points.
Design of Audio Signal Testing and Analysis System Based on Virtual Instrument
Authors: Zhou Nan Quan
Published: March 2012

An audio signal acquisition and analysis system with low-cost and high performance was developed, taking LabVIEW as the software development platform and the computer sound card as hardware platform. This system is capable of audio signal acquisition, real time dynamic display, analysis processing, storage and display of audio signal. Practical application shows that this system not only has those advantages such as high-precision, stability, reliable performance and being easy-operated, but also can achieve common data-acquisition within the designed frequency range of the sound card. The signal acquisition technology based on the sound card, especially the technology combining with virtual instruments has broad prospects in the field of engineering test measurement and teaching practice.
Design of a Coaxial Positioning System Based on Flexible Decoupling Beams
Authors: Chen Tao , Chen Li Guo , Pan Ming Qiang , Sun Li Ning
Published: March 2012

To overcome the shortcomings of existing technology and achieve a type of shaft and sleeve assembly in navigate with high coaxial requirements, a novel coaxial positioning system is presented based on the flexible decoupling beams and micro-vision system. In order to meet the adjustments online and maintain posture of the shaft and sleeve, a flexible beams structure with pattern of “square lattice” is designed. Combined with micro motorized X-Y stage and clamps, the structure achieves exact coaxial positioning precision and station keeping function. The mechanics theory and finite element method are used to analysis and simulate the beams. The Hough algorithm is applied in the micro-vision system to realize the precise coaxial positioning of real-time detection and calculation. Experiments show that the coaxial positioning accuracy is better than 8μm, and the positioning device could guarantee the realization of positioning assembly in practical applications.
Damage Identification for Curl Tube Structure Based on Modal Flexibility Curvature
Authors: Li Yong Jun , Ma Li Yuan , Wang Tian Hui
Published: March 2012

To detect the damage of curl tube structure with more effect, the finite element method (FEM) and experimental modal analysis (EMA) were employeed to generate the modal flexibility of the curl tube. The modal flexibility was used to compute the modal flexibility-curvature by using the central difference method. Different degrees and locations of damage were simulated by additional quality in the intact curl tube to verify the modal flexibility-curvature and difference generated by both FEM and EMA. The results show that the modal flexibility of curl tube should have the direction. In addition, we conclude that the flexibility curvature’s difference in x and y plane can not be used for damage identification. But using the flexibility curvature’s difference of the z direction in the vertical plane, we can not only identified the multiple damage location, but also to analized degree for the extent of injury to the same location .
Calculation of Decay μ → eγ in Small Neutrino Mass Limit in a Model of Right-Handed Neutrinos
Authors: Bu Jian Ping , Jia Bei
Published: March 2012

The lepton flavor violating process has been previously studied in a model of electroweak-scale right-handed neutrinos. We have calculated the decay amplitude in unitarity gauge [1]. In this paper, we recalculate the amplitude in gauge but in small neutrino mass limit. The final result which the cancellation of the dependence in is different from the obtained amplitude and the technical points in the previous work.
Mechanical Kinematic Scheme Design of Automatic Piston Pin Sorting Machine
Authors: Jiang Shao Jie , Zhou Hua , Wang Wei
Published: March 2012

In centerless grinding machine, piston pin is not convenient for online detection. It is better to be tested and sorted by automatic sorting mechanisms. The piston pin automatic sorting system designed in the paper is a machine based on the detection results to shunt qualified product, nonconforming product and waste automatically. Graph of movement, tree graph of function and morphological matrix charts are mapped, the mechanical movement scheme is determined. Further, the machine is drawn in three-dimensional form. It can shunt product automatically
MASTA Software for Wind Turbine Gearbox Design
Authors: Zhao Li Min
Published: March 2012

Wind turbine technology has developed rapidly in recent years. Increasing component reliability to achieve 20% wind energy will require advancements in component design, materials, and testing methods to validate wind-turbine components in the harshest environments. At the core of many of the solutions offered by SMT is MASTA, our fully integrated software tool for the complete design, analysis and optimization of transmission systems. Designers & engineers can use MASTA to rapidly predict key transmission performance characteristics and to identify any design faults or weaknesses before any manufacturing is started, saving both time and money. MASTA’s reliable analysis techniques can improve the power, performance, reliability, and cost effectiveness of wind turbines. The mix of commercial and proprietary software will provide a complete assessment and optimization of the wind turbine through detailed dynamic and static analysis of key component functions for their efficiency and design life.
Numerical Simulation and Die Casting Process for Cylinder
Authors: Huang Yong , Dong Yue , Du Xiao Ming
Published: March 2012

Filling and solidification for aluminum alloy packing block in die casting were simulated by numerical simulation. Distribution and change of temperature field as well as velocity field were visualized. The desirable processing parameters can be obtained with pouring temperature of 620°C and mould temperature of 180°C as well as shot velocity of 4m/s. The qualified products were obtained on the basis of the optimized die-casting parameters.
Experimental Study on a Kind of Long Anchor Bolt
Authors: Tao Han , Chen Tao , Ren Qin Hua , Zhu Zhen Tao
Published: March 2012

To solve the limited use of anchor bolt in some special conditions. A kind of long anchor bolt is come up to replace the normal anchor bolt. Through the experiment on this long anchor bolt with anchor bolt drawing dynamometer and anchor cable drawing dynamometer, we know this long anchor bolt have the same percentage elongation with the normal anchor bolt and can improve the quality of supporting. Compared with the normal anchor bolt, it’s higher in tensile strength and percentage elongation, better quality in supporting, shorter in supporting time and safer.
Security Issues of RFID Technology in Supply Chain Management
Authors: Wang Ming Hui , Liu Jie Fang , Shen Jie , Tang Yong Zheng , Zhou Ning
Published: March 2012

RFID can be used to automate and thus streamline identification processes, which means that more checkpoints along the supply chain can be established at decreased costs. Additionally, the technology can provide further benefits which make it superior to the currently widespread automatic identification (Auto-ID) technology of the barcode. However, there are still some security issues in the current RFID technology, which has initially been developed decades ago. In this paper, one RFID protocol for supply chain management RFID protocols has been proposed, and will greatly solve the security issues of the Auto-ID process.
Member Behavior-Oriented Simulation Research for Supply Chain Coordination
Authors: Zhao Can Can , Zhang Xiao Dong , Qiu Jun Jiang
Published: March 2012

In order to reflect the initiative, autonomous and coordinative characteristics of the member behaviors in supply chain coordination simulation, an integrated process simulation model was formulated centered on the member agent behavior firstly. Then, the member agent behavior model was emphatically studied, and hierarchical colored Petri-nets were used to describe the agent behavior process and coordinative behavior process. Finally, a supply chain coordination simulation platform was developed based on these models, and the member behavior-oriented modeling and simulation functions were realized. Member behavior-oriented coordination simulation provides a quantitative and dynamic method to analyze the supply chain coordination mechanism
Optimization Design of Single Steering Trapezoid Mechanism of Vehicle Based on MATLAB
Authors: Ren Ai Hua , Sun Chuan Qiong
Published: March 2012

Firstly the optimum mathematical model of single steering trapezoid mechanism of vehicle was established gradually through selection of variables, setting constraints, determination of objective function. And then the optimum calculation is carried out with MATLAB programming in the case of EQ1092, and the problem occurring in actual operation that the optimum results changed with initial points was solved. In the end the further optimum research direction of this mechanism was intuitively pointed out through visualization and sensitivity analysis of results.
Research and Application of Collaboration between Design & Manufacturing for Precision Forged Blade
Authors: Yang Hai , Zhang Ding Hua , Li Shan , Fan Ze Bing
Published: March 2012

The system of collaboration between design and manufacturing is proposed in order to meet the precision forging manufacturing. The configuration of the system and functions are studied and analyzed in detail. The system integration mode based on PDM (Product Data Management) is put forward. Application systems around the process of collaboration between design and manufacturing can be integrated seamlessly by integration mode. And two key enable technologies are analyzed in detail. Model association method based on WAVE technology is used to implement design of precision forged die. The work model and data structure based on the collaboration system is studied. Finally, an application engineering system is developed and a case study is given to demonstrate the above ideas in the environment of aero-engine manufacturing enterprise.
Finite Element Analysis on Bending Stress of Generating Spur Bevel Gear Based on ANSYS
Authors: Cui De Li , Li Yi Tong , Zhang Hong Zhuang
Published: March 2012

The meshing generating spur bevel gear is presented by the method for precise modeling of gear in software Catia. Then by the excellent data exchange interface between Catia and ANSYS, the model can be transferred into ANSYS and bending stress of the gear tooth is calculated with finite element method ( FEM),which proposed design theory basis of generating spur bevel gear.
Research of Three-Dimensional Simulation Tree Based on Iterated Function System
Authors: Zhang Ying Chao , Xiao Yun , Hu Kai
Published: March 2012

This paper introduced the composition and classification of tree models firstly, discussed the problem that branches and leaves with varying shapes could be simulated by regulating their parameters. Then, we researched how to use Iterated Function System (IFS) and billboard to simulate branches and leaves. Finally, by using this method, we simulate two types of three-dimensional trees, and applied them to virtual campus. The results showed that, three-dimensional trees simulated by this method have advantage of high reality, diversity and real time.
Development of Cutting Optimization System for Garment
Authors: Wang Xiao Yun , Huang Zhen Zhen
Published: March 2012

Garment cutting process is an important part of production ,directly related to the enterprise cost management and production efficiency. So, combined with the actual production need, the research for garment cutting process planning begins from task list to cutting plan, at last distributes the cutting task. It aims at improving the garment cutting process efficiency and reducing the production of the costs and optimize management. The source of the research is the Shijiazhuang Municipal Bureau of Science and Technology project. The subject number is 09113031A.
The Study and Simulation on Campus Network Intrusion Detection System
Authors: Xie Ping , Wang Wei
Published: March 2012

In this paper, the current intrusion detection systems are analyzed in the full study of the development trend of domestic and foreign country. According to the campus network can be divided into functional independence of the structural characteristics of the subnet, while taking full advantage of agent technology in the intrusion detection system technology, we have referenced to the agent technology and a variety of detection methods for the analysis and comparison, and have analyzed the existing distributed intrusion detection system ,we propose a monitoring and management center with a multi-agent intrusion detection model framework. This model uses a distributed architecture that combines network-and host-based intrusion detection method for intrusion detection.
The Research of Three-Dimensional CAD/CAPP Technology Based on Feature
Authors: Peng Ai Guo , Cai Chang Tao
Published: March 2012

The part information model is proposed. It utilizes the second development tool Solidworks API is provided by Solidworks to realize the three-dimensional CAD/CAPP system information exchange and sharing. The overall function model of three-dimensional CAD/CAPP integrated system based on the feature is proposed. Take a box-part for instance, explains the method of part feature recognition and extraction, realize three-dimensional process design based on part information model.
Study on Process Control Experimental System Based on MCGS
Authors: Hong Ro Bin , Wang Hong Mei
Published: March 2012

This paper mainly introduces Process Control comprehensive Experimental System Based on MCGS. The system is a small distributed control system. The host computer with Monitor and Control Generated System (MCGS) completes the simulating and monitoring of the controlled objects. And by RS-232/RS-485, it communicates with the slave computer which is made of Siemens PLC (S7-200). The real-time detected and controlled objects are temperature, pressure, liquid level and flow. The collected data are treated and some data of them are calculated by the way of PID operation in accordance with the specific requirements which results will control the actions of actuators. And in addition, the system can be easily combined into a variety of chemical experiments according to different needs. Practice has proved that the experimental device fully simulates industrial control field and it is simple operation and flexible structure, the experimental effect is good
The Preliminary Study of Food Waste Processing Equipment Reliability Design
Authors: Liu Yu De , Liu Yang , Sheng Yi Jian , Shi Wen Tian , Zhang Yuan , Lan Yu Jing , Cao Yan Ping
Published: March 2012

Reliability design is a new design theory and design methods with the modern science and technology developed. Food waste processing equipment is a new and efficient equipment used for food waste recycling. This paper briefly describes the design of mechanical reliability, and by describing the characteristics of food waste, described in the food waste processing equipment design, the need for the use of reliability design. To provide some basic reliability analysis for the future design of equipment.
Stability Prediction Model for Milling Process
Authors: Ma Hai Long , Tang Ai Jun , Chen Qing Kui
Published: March 2012

In the process of milling thin-walled plate, chatter is one of the major limitations on productivity and part quality even for high speed and high precision milling machines. Therefore, it is necessary to avoid chatter with a suitable choice of cutting condition. This paper studies the dynamic stability models of milling the thin-walled plate by analyzing the geometrical relationship of cutting, and derives the mathematic expressions in theory. Moreover, this paper develops a three-dimensional lobes diagram of the spindle speed, the axial depth and the radial depth. Through the three-dimensional lobes, it is possible to choose the appropriate cutting parameters according to the dynamic behavior of the chatter system.
Research on the Realizing Mechanism of an Industrialized PL-ISEE Database Platform
Authors: Dong Jian Li , Shi Ning Guo , Chen Yan Yan
Published: March 2012

Using the automation production mode of modern manufacturing industry for reference, a new industrialized PL-ISEE (product line based integrated software engineering environment) model was proposed by us in reference [8]. The middle part of the PL-ISEE architecture is data layer which is composed of the software components bus and core assets database platform to achieve the storage and managements of product line core assets data. In this paper, the architecture and its implementation mechanism of the PL-ISEE database platform is further researched. Whole platform architecture consists of core asset objects management service and assets database system. The data model and database schema as well as database views of the database platform are designed and created by using united product line concept model and data model. So, the database supporting platform’s functions and configuration also well satisfy the requirements of interfaces, tools and data integration as well as product line assembling production in the PL-ISEE. Therefore, the design and realizing ideas of the PL-ISEE database platform will be valuable to research product line engineering and methodology in future.
Reverse Engineering of Artwork Teacup
Authors: Feng Jun , Jiang Bo
Published: March 2012

Through the three-dimensional laser scanner (Non-Contact 3D Digitizer), the outline point cloud of the teacup can be obtained, and the reverse engineering such as cutting, aligning, combining, etc. is conducted to the point cloud in the software of RANGE VIEWER and RapidForm XOR, to achieve the three-dimensional diagram, which can be imported to the rapid prototyping machine, to process the teacup sample and complete the reverse engineering of teacup imitation.
Test System for Digital General-Purpose Integrated Chip
Authors: Zhu Ai Jun
Published: March 2012

This paper introduces a test system for general-purpose Integrated Chip based on Microcontroller. The system receives keyboard information about the chip under test, then tests the function of the known chip; finally it determines whether the chip under test is faulty or not. It can also indentify the type of the unkown fault-free chip. By selecting the function switching key，the chip can be automatically tested. Experimental results are presented to demonstrate the effectness of the test system for digital general purpose integrated chip.
Research of Geological Exploration Information System Based on Three-Tiered C/S Architecture
Authors: Wang Li
Published: March 2012

This paper compares C/S architecture and B/S architecture, geological exploration information system is developed on three-tiered C/S architecture. This paper introduces the function of geological exploration information system. The system will enhance informationization and productivity of geological and mineral exploration works, it contributes to the integration and management of the geological exploration of information resources.
Research on QoS of ertPS of 802.16e Scheduling Algorithms
Authors: Shi Heng Hua , Xu Xin , Wang Yu Jie , Kang Wei
Published: March 2012

ertPS is an extension of rtPS and combines the efficiency of UGS and rtPS. Based on ertPS, base station can provide the active authorization unicast as UGS, and better than UGS. In OPNET environment, we model and simulate ertPS of moble WiMAX MAC layer scheduling algorithms based on IEEE 802.16e protocol. The simulation results compare the performance of ertPS with UGS on load, delay, delay variation and etc., and analyze QoS according to IEEE 802.16e protocol.
A Comparative Study on Emergency Materials and Equipment for Oil Spills
Authors: Kong Fan Jie , Xie Ming , Chen Yu , Zhang Shu Shen , Liu Su Ling
Published: March 2012

With increasing import and export volumes of oil products in China, port terminals are under increased pressure to prevent water pollution. The prevention of offshore oil spill accidents, and the remedial and control measures for such accidents are one of the most important aspects of maritime management, and are also major issues for the entire shipping industry. This paper describes different emergency materials and equipment for oil spill management and describes the use of these techniques in domestic and international ports. Suggested changes to port emergency materials and equipment are also described, based on the processing capabilities for oil spills in different situations, combined with the port's environmental characteristics and ecological situation
Approach to Modified Mechanism of Eutectic Si in Alumina Fiber Reinforced Al-Si Alloy Composites
Authors: Liu Zheng , Liu Xiao Mei
Published: March 2012

Alumina/Al-Si alloy composites were manufactured by squeeze casting. The morphology of eutectic Si in the composite was observed on scanning electronic microscope, and the modified mechanism of the eutectic Si in the composite was approached. The alumina fiber in the composite could trigger twin during the growth of Al-Si eutectic and lead to modification of the eutectic Si near the fiber.
Low Temperature Large Scale CVD Synthesis of Nano Onion-Like Fullerenes
Authors: Chen Lei Shan , Wang Cun Jing
Published: March 2012

Synthesis reactions were carried out by chemical vapor deposition using iron catalyst supported on aluminum hydroxide at 400 °C and 420 °C, in the presence of argon as carrier gas and acetylene as carbon source. The aluminum hydroxide support was separated by refluxing the samples in 40% NaOH solution for 2 h and 36% HCl solution for 24 h, respectively. The samples were characterized by field-emission scanning electron microscopy, energy dispersive spectroscopy, high-resolution transmission electron microscopy and X-ray diffraction. The results show that carbon nanotubes were the main products at 420 °C, while large scale high purity nano onion-like fullerenes encapsulating Fe3C, with almost uniform sizes ranging from 10-50 nm, were obtained at the low temperature of 400 °C.
A Clonal Selection Algorithm Based Fuzzy Optimal Iterative Learning Control Algorithm
Authors: Li Heng Jie , Hao Xiao Hong , Du Xian Jun , Jin Ya Rong
Published: March 2012

In order to realize effective tracking of output of non-linear plants with model uncertainty in specified time domain, a clonal selection algorithm based fuzzy optimal iterative learning control algorithm is proposed. In the algorithm, a clonal selection algorithm is employed to search optimal input for next iteration, and another clonal selection algorithm is used to update the parameters of Takagi-Sugeno-Kang fuzzy system model of the plant. Simulations show that the proposed method converges faster than GA-ILC in iterative domain，and is able to deal with model uncertainty well