bluuebunny/crossref_metadata_2025 huggingface dataset:
Microscopic Mechanism of the Diffusivity of Concrete Chloride Ion
Authors: Liu Jun , Xing Feng , Dong Bi Qing
Published: September 2013

Use concrete specimens with different mix proportions to conserve them for 90d taking into account the influence of mineral admixture material---fly ash. Then adopts the RCM test method to measure the rapid diffusivity of chloride ion of concrete and observes the microstructure of the cement paste using the SEM (scanning electron microscopy), aiming to study the impact of fly ash on its hydration process. The results show that the micro-pore structure of the concrete has a great influence on the rapid diffusivity of chloride ion, while its diffusivity is closely related with the water-cement ratio of concrete; after the fly ash is added, the ettringite generation of the concrete in the early stage decreases, and the interspace of the transition zone between the hydrated particles and hydration slurry is enlarged, coupled with the increase in the intercommunicating pore; after curing for 90d, the chloride ion diffusivity decreases significantly with the increase in the dosage of fly ash. For the concrete with the fly ash dosage of 15%, its chloride ion diffusivity is only 75.4% of that with the same water-cement ratio; when its fly ash content is 30%, its chloride ion diffusivity is only 32.3% of the ordinary concrete.
Polymer-GaN Bulk Heterojunction Photovoltaic Cells
Authors: Feng Qian , Li Yu Kun , Du Kai , Shi Peng , Wang Qiang , Feng Qing , Hao Yue
Published: September 2013

The hybrid polymer-GaN nanocrystal heterojunction solar cell has been fabricated by blending of GaN and regioregular poly (3-hexylthiophene)(P3HT) through solution process and spin-coating on the glass substrate, in which the Gallium Nitride (GaN) nanocrystal was successfully synthesized by means of sol-gel process The cell shows the Voc and Isc of 0.71V and 3.5mA/cm2
Practice of Fuzzy Ball Cementing Pad Fluid in Leakage Zone of Naiman Well N-X-Y
Authors: Li Zuo Chen
Published: September 2013

This paper has analyzed the geology and engineering factors of poor cement quality in leakage zone of Jiu Fotang Formation in Naiman Block. Lab evaluation shows that the value of YP/PV of Ceram site-weighted fuzzy ball pad fluid is more than 1.0Pa/mPas, cuttings recovery rate is 94% and bearing pressure is more than 5MPa. 10m3 of pad fluid was pumped to the leakage section of 2310-1865m of Jiu Fotang formation in the well N-X-Y, and pump pressure decreased slightly from 3.8MPa to 3.6MPa and so was the return to surface. However, for this severe leaking zone, this leakage can be accepted. Cement quality was evaluated as acceptable by logging. The problem of cement slurry leakage was solved by fuzzy ball pad fluid and cement quality was improved, so the remedial measure for trial production test was skipped, and then the job cost was reduced and the application of fuzzy ball was also broadened.
Dynamic Behaviors of a Discrete Two Species Competitive Model
Authors: Wu Ting
Published: September 2013

This paper studies a discrete Competitive model and provides a set of sufficient conditions for the existence and stability of the equilibrium of the model. By obtaining the optimal harvest strategy of the two equilibrium model through the Lagrange multiplier method and discrete pontrjagin maximum principle, it provides a theoretical direction for the actual production.
Analysis of Game Theory Application in the Land Acquisition of Major Projects in China's Urban Area
Authors: Ni Yao , Yue Wen Ze
Published: September 2013

In this paper, the author utilizes the game theory to analyze the interest expression, game strategies and the inter-game relation of stakeholders including government, developers, land-contributing units and citizens in the major projects. Then the game model is built to focus on the game relations between the government and landcontributing units as well as citizens, aiming to identify factors that promote the balance. Finally, the game solutions are proposed.
Research of the Processing Technology and Quality Standard of Indocalamus latifolius Leaves
Authors: Wang Xiao Fei , Wang Jin Fu , Liu Zhi Gang , Liu Ting Xian , Yue Xiu Qiang , Yang Jian Chao
Published: September 2013

This paper regards theIndocalamus latifoliusleaves as the research object, aiming to explore the influence of the new processing technologies and the traditional ones on theIndocalamus latifoliusleaves through technologies of harvesting, fractionating, drying and vacuum sealing, marinating, and freezing, etc. Then it prepares the product grade, physicochemical index, health indicators and product qualification criteria to provide a theoretical reference for their further development.
The Characteristics of Rare Earth Elements of Red Mudstones in the Lower Part of the Fourth Member of Shahejie Formation in Dongying Depression and its Geological Significance
Authors: Liu Li’an , Zhu Nian Hong
Published: September 2013

The comprehensive analysis of rare earth elements (REEs) of red mudstones in the lower part of the fourth member of Shahejie Formation (S4) in Dongying Depression shows that the red mudstones in the lower S4 of Dongying Depression originate from multi-sources. Red mudstones can be classified into three major types based on the characteristics of their sedimentary structures, which are closely relevant to REEs of red mudstones. The three types of red mudstones are obviously different in distribution: the first type is close to eolian deposits, indicating their relevance to wind action in formation; the second type, partly similar to the first type, has obvious differences with the first type, which can be deduced that it is formed through secondary transformation; the third type embraces the alluvial characteristics, suggesting its good inheritance of the surrounding parent rocks in the distribution of REEs.
Analysis of Energy Conservation and Environmental Protection in Construction Enterprises
Authors: Liu Yan , Deng Peng , Yang Deng Ke
Published: September 2013

According to analyzing the status quo and tendency of energy conservation and environmental protection in construction enterprises, some measures about using resources, energy and water more efficiently are proposed to promote the green construction.
Numerical Simulation of Flow Structures on the River Conjunction Area
Authors: Jia Dong Dong , Qian Li Hui , Peng Wen Liang , Li Wei , Zhang Xi Bao
Published: September 2013

River conjunction region is a common occurrence in plain river network areas. Flow structures in the + type conjunction region are very complex, which affected by the conjunction rivers. In the present paper, the flow pattern in the + type conjunction area of the Grand Canal and the Xingou River was simulated by a 2-D numerical model. The simulated results demonstrated that a transversal velocity region was occurred in the left part of conjunction region due to the inflow influences of north Xingou River. Additionally, a circulation zone was observed in the right part of upstream Grand Canal due to the outflow effects of south Xingou River.
Removal of Arsenic from Wastewater by Using Pretreating Orange Peel
Authors: Peng Yuan , Xiao Hong Yan , Cheng Xian Zhong , Chen Hong Mei
Published: September 2013

The use of low-cost and eco-friendly adsorbents has been investigated as an ideal alternative to the currentexpensive methods of removing arsenic from wastewater. Orange peel was collected from the local fields of orangetrees and converted into a low-cost adsorbent. The effects of solution pH, contact time, and concentration of orange peel have beenstudied. The maximum adsorption capacity calculated from the Langmuirisotherm model was 43.69 mg g-1,Based on the adsorption capacity, the pretreating orange peel was shown to be promising materials for adsorption removal ofarsenics from aqueous solutions.
Activated Carbons for Ventilation Air Methane Enrichment by Vacuum Pressure Swing Adsorption
Authors: Ouyang Shao Bo , Xu Shao Ping , Song Ning
Published: September 2013

A coconut shell based activated carbon with BET surface area of 795 m2/g, micropore volume 0.37 mL/g and total pore volume 0.44 mL/g was prepared. With this activated carbon as adsorbent, the ventilation air methane (VAM) enrichment by vacuum pressure swing adsorption (VPSA) was investigated. The influence of VPSA parameters such as feed flow rate, effluent flow rate and adsorption time on the performance of the VAM enrichment were examined. The results showed the methane concentration in the simulative VA gas could be enriched by VPSA from 0.52 vol.% to 1.51 vol.% with a methane recovery of 96.3 % at 25 °C and 200 kPa. The methane concentration in effluent gas was reduced to below 200 ppm. The as-prepared activated carbon could be used in the VAM enrichment by VPSA for lean-burn gas turbines.
Impact of Monetary Policy on Industries Energy Demand in China
Authors: Fan Yu Ping , Fan Mao Qing , Yue Xue Qing , Wang Hua
Published: September 2013

In recent years, energy problem has been the focus of government and public attention. This paper presents a new approach to a quantitative analysis on the industriesdemand for energy in china based on an integration of econometric modeling and input-output analysis. It incorporates a new methodology for assessing the effect of economic policy on industriesdemand for energy within a complete econometric model of Chinese economy. The model is employed to analyze the influence of monetary policy on 33 industriesdemand for energy in China.
Investigation and Analysis about the Construction and Utilization of Biogas Digester in Changyang County
Authors: Zhao Xiao Rong , Luo Yu Hong , Du Na Na , Huang Ying Ping
Published: September 2013

In China countryside, the government policies encouraging individual farmers to construct biogas digester were strongly promoted to take clean biogas as the main household energy consumption, replacing the traditional way of biomass combustion energy. The construction and application situation of biogas digester since the new energy policies implementation was surveyed with the method of questionnaire survey, discussed and analyzed in detail with classification analysis method. The feedback of survey reports shows that three important factors including subsequent technical services, the shortage of financial support and insufficient fermentation raw material, have badly hampered the extensive construction of biogas digester and comprehensive utilization of biogas in different fields.
Solvothermal Method Preparation of Nano Y2O2S:Eu3+ and Research of Luminescence Property and Cytotoxicity
Authors: Lu Lu , Wang Zhi Long , Li Ying Dong , Li Cheng Yi , Li Yi , Du Yi Zhou
Published: September 2013

Series sample were prepared with solvothermal method using ethylene-diomine as solvent, at 220°C for 24h. All samples are white powder and XRD proofs that all of them are single phases. Using the Laser granularity cryoscopy (rise 2008) to measure the samples size , and most samples sizes are from 150nm to 200nm. SEM photo shows that the Y2O2S:Eu3+morphologies are spherical but have some aggregation. And Y2O2S:Eu3+has a better a anti-decay property compared with Rhodamine B. The Cell toxicity test (MTT) shows that when concentration range in 20-80mg/ml, the cytotoxicity of sample is relatively small ,but as a good bio-marker materials in tumors diagnosis , its toxicity is still high.
Comparative Research on the Grindability of Ti-6Al-4V and PTMCs with WA Wheel and CBN Wheel
Authors: Zhao Biao , Ding Wen Feng , Miao Qing , Xu Jiu Hua , Liu Zhi Wu
Published: September 2013

This article studies the effect of process parameters on the grindability of Ti-6Al-4V and particulate reinforced titanium matrix composites (PTMCs) comparatively, using the wheels of white alundum (WA) and cubic boron nitride (CBN) respectively. The processing variables, such as grinding force, grinding temperature, specific energy were investigated in detail. The results indicate that the grinding force and temperature with WA wheels were obviously larger than that of CBN wheels. The specific energy of Ti-6Al-4V and PTMCs decreased gradually with the increase in the maximum underformed chip thickness using the two different wheels.
Study on Influence of Skill Level on Tool Wear during Feed Mode Change in Lathe Work
Authors: Takeo Yasushi , Natsu Wataru
Published: September 2013

In this report, our attention was paid on the tool wear due to the stop of tool-feed, caused by change from the automatic operation to the manual one in the lathe work, because it was thought that skill level of workers influences the tool wear significantly. First, the workers gaze-point movement was recorded with an eye camera and analyzed with the application software. The results showed that the stop time of the tool-feed for skilled workers was very shorter than that of beginners. Then, the relationship between the tool-feed stop time and the tool wear was investigated by using an NC lathe. It was found that the shorter the stop time is, the smaller the tool wear becomes. Based on the above findings, the influence of the skill level on the tool wear due to the tool-feed stop in lathe work was revealed and key issues in the skill transfer of lathe work were confirmed.
Analysis and Experiments on the Plastic Limit Load of Elbows under Combined Pressure and In-Plane Closing Bending Moment
Authors: Duan Zhi Xiang , Shi Kun
Published: September 2013

This paper discusses the plastic limit load of elbows without defects and with local thinned area (LTA) in the extrados under combined pressure and in-plane closing bending moment. Finite element analysis (FEA) and experiments have been used. The results of FEA show that, for the elbows without defects, when the ratio of pressure to the limit pressure (P/PL) is smaller than 0.469, the limit moment of elbows increases with the increasing pressure; when the ratio (P/PL) is bigger than 0.469, the limit moment of elbow decreases with the increasing pressure. For the elbows with LTA, the FEA results show that with different LTA the variation of the limit load of elbows to the pressure is different. Perhaps, the limit moment of elbows always decreases with the increasing pressure. It is also likely that the limit moment of elbows increases with the increasing pressure and then decreases with the increasing pressure. The results of FEA are consistent with the experimental results. By fitting the results of FEA, the safety assessment figure for elbows under combined pressure and in-plane closing bending moment is drawn.
Study on Surface Properties of PAN-Based Carbon Fiber Oxidized in a Static Electrochemical Oxidation Process
Authors: Lin Zhi Tao , Zhu Bo , Lin Xue , Chen Yang , Liu Yu Zhen
Published: September 2013

PAN-based carbon fibers (CFs) were oxidized in a static electrochemical oxidation process. The surface color and chemical composition were investigated by means of digital camera and XPS. The results showed that, with the increasing distance from anodic roller, the surface color of CFs changed and the degree of oxidation got weaker and weaker. A close correlation was found between its surface color and chemical properties. It indicates that the electrochemical oxidation performance of one kind of carbon fiber can be handily studied using static electrochemical oxidation process because we can get CFs of different degree of oxidation through one experiment.
The Geneva Mechanism Motion Simulation and Research to Improve the Design Method
Authors: Song Ji Shun , Song Yong Shi
Published: September 2013

The Geneva mechanism has been widely used in various kinds of machinery. This thesis is about the geneva mechanism of the automatically rotate workbench, using the SolidWorks 3D modeling software to establish a model of the geneva mechanisms parametric design. Afterwards, to motion simulate the geneva mechanism by the Motion, then output the those parameters. In the end, its angular velocity and the angular acceleration, as well as the motion of the interval time will be calculated with the driving plate twirling in a constant speed. The result provides a theoretical foundation for the structural design and the engineering application of the design of this institution. It also present a method for improving the design.
Research of Wear Mechanisms of PCD Cutting Tools in Sand Mold Milling
Authors: Xu Ji Fu , Shan Zhong De , Li Yan Zheng , Liu Feng
Published: September 2013

The PCD cutting tool is used to dry mill foundry sand materials, SEM is used for observing the wear morphology of the cutting tool, and EDS is used to analyze the components of the wear area of the cutting tool so that the wear morphology of the cutting tool and the wear mechanisms are studied. The research results indicate that the wear morphology of the PCD cutting tool in cutting sand molds are rake face wear, cutting edge wear, and flank wear. The wear mechanism of the PCD cutting tool is abrasive wear, which is caused when PCD crystal particles produced in the mechanical friction between the cutting tool and the work-piece material in cutting continuously come off. Mechanical fatigue wear is the main cause of mechanical fatigue caused by alternating load which is generated by the interrupted cutting and high-frequency mechanical shock of workpiece material hard point.
Optimization Design of Locking Mechanisms of Small Arms
Authors: Li Peng , Di Chang Chun , Wu Xiang Dong
Published: September 2013

Locking mechanisms are kernel components of small arms. The optimization of locking mechanisms of sniper rifle was studied in detail. Using the cubic spline, A better figure of locking curve was constructed. A series of optimized parameters of gas device and locking mechanisms were also got. Results of optimization are helpful to improve the accuracy of sniper rifle and can supply an academic base for further improving of small arms structures.
Study on Urea-Formaldehyde Resin for Glass Wool Products
Authors: Zhang Nan Zhe
Published: September 2013

In order to prepare urea-formaldehyde (UF) resin adhesive with good performance for glass wool products, we used polyvinyl alcohol (PVA), p-toluenesulfonamide (PTSA) and methanol to modify UF resin, optimized the molar ratio of formaldehyde (F) / urea (U) and reaction components ratio by orthogonal test, reduced the content of free formaldehyde in UF resin, and enhanced the water resistance, flexibility and stability of UF resin.
Morphological Analysis of Particles in Transmission Electron Microscopy Image Using Image Processing
Authors: Phankokkruad Manop , Sirirat Wacharawichanant
Published: September 2013

The analysis of material particles in the transmission electron microscopy (TEM) image is the most important in the development and synthesis of the new materials for application in many fields. Manual identification is the hard work, spent a lot of time and inaccurate method. To solve this problem, the image processing is proposed for automatically identifies the material particles boundary and size in TEM images in or order to extract the useful data. The image processing method has been experimented on variety of TEM images and very promising results have been achieved given more accuracy. Experimental results show that the proposed method gave the high adaptability, more accurate and rapidly than the manual method.
Experimental Study on Mechanical Properties of Heated Granite under Different Cooling Ways
Authors: Ni Jing , Chen You Liang , Wang Peng , Azzam Rafig
Published: September 2013

The mechanical properties of heated granite subjected to two different cooling ways, namely cooled in the water (fast-cooling) and cooled in the air (slow-cooling) at room temperature, were studied respectively. The effects of the heating temperatures and cooling ways on the failure mode and failure mechanism of heated granite were analyzed. The tested results indicated that the longitudinal wave velocity, uni-axial compressive strength, and initial elastic modulus of heated granite decreased with the increasing heating temperature, especially for those subjected to the fast-cooling way compared to those subjected to slow-cooling way. To the contrary, the peak strain increased as the heating temperature increases, and the peak strain was bigger for the slow-cooling way than for the fast-cooling way. The analysis of the experimental results indicated that the water cooling accelerated the deterioration of the internal structure of heated granite and resulted in undesired mechanical properties.
Behavior of Thin-Film-Type Delamination of Layered Composite in Post-Buckling
Authors: Pavelko Vitalijs
Published: September 2013

A revision of the basic assumptions those are usually used in the analysis of stability of thin delaminated layer and delamination propagation in a compressed composite is presented in this paper. For this purpose, the theory of flexible elastic plates with large displacements was used. As a result the compressive force and the total longitudinal strain of sub-laminate are expressed in terms of complete elliptic integrals, which uniquely identify the buckled shape of sub-laminate, the effect of buckling on the compression strain and increment of the compressive force in the buckled state. Stress and strain, as well as the strength of the buckled sub-laminate in the dangerous cross-section were also analyzed. The results of the general analysis of delamination propagation and its compression-bending destruction in the buckled state allow to define the basic regularities of the damage behavior of compressed layered composite.
A Method of Eliminating Ice on Wind Turbine Blade by Using Carbon Fiber Composites
Authors: Li Chang Liang , Cui Xin , Wu Zhi Hua , Zeng Jing Cheng , Xing Su Li
Published: September 2013

In this work, a method to eliminate ice on wind turbine blade by using carbon fiber composites was put forward. To prove that this idea is feasible, a carbon fiber composite panel with its ends soaked by the conductive silver paste was fabricated and surface temperature of it at three levels of voltages was measured. The surface temperature of the composite panel increased significantly and finally retained a constant, which shows that the carbon fiber composites can be used to eliminate ice when the glass fabric composite blades are covered by the carbon fiber composites.
Effect of Moisture Absorption and Fiber Ply Orientation for Artificial Hip Joint on the Mechanical Properties of Carbon/PEEK Composites
Authors: Kim Yun Hae , Yoon Sung Won , Lee Jin Woo , Ha Jin Cheol , Murakami Ri Ichi
Published: September 2013

The purpose of this study is to determine the correct estimation of the mechanical property between epoxy resin and PEEK sheet as the composites and its validity has been tested with the alternative materials of the metal-based materials for artificial hip joint. Moreover, this work evaluated the mechanical properties according to the moisture absorption and the fractured surfaces of Carbon/Epoxy and Carbon/PEEKcomposites were also evaluated. First, the specimens for the Carbon/PEEK and Carbon/Epoxy composites manufactured with the ASTM standard. The specimens immersed in distilled water at 37°C during 100 days and the coefficient of moisture was measured in according tothe Fick's law. In addition, this work evaluated the fracture energy according to the fiber ply orientation. As a result, the coefficient ofmoisture-absorption of Carbon/PEEK composites was the lowest because the interface coherence with the fiber and resin are the most strong. Also, the fracture energy of the Carbon/PEEK composites was more excellent than the Carbon/Epoxy composites.
Laser-Ultrasound Testing of Cracks in Porcelain Insulator
Authors: Hou Ru Feng , Wang Wen Hong , Mo Run Yang , Liu Xiao Jun
Published: September 2013

Detected the cracks in porcelain insulator is a strategy to prevent failure. This study proposes a remote detect technique to inspect the cracks in on-line porcelain insulator based on laser-generation based imaging (LGBI) method. Two porcelain insulators samples A and B were designed. Samples A is a 10kv porcelain insulator work outdoors, it has five artificial notch-type defects in the cylindrical surface of porcelain insulator. Sample B is a 10kv porcelain insulator work indoor with aging cracks. All defects in two specimens were detected by laser ultrasonic visualizing inspector (LUVI). Images are quite convenient to confirm cracks morphology. The experiment proves that the cracks in porcelain insulator can be detected by LUVI system.
Motion of Digital Precision Forming Machine without Pattern Casting and Tool Path Simulation Based on VRML
Authors: Xu Zheng , Shan Zhong De , Zhan Xiao Lei
Published: September 2013

In this pape, we have researched the digital precision forming machine without pattern casting, and discussed the motion of the machine and tool path simulation technology based on VRML. By updating IndexedLineSet node, we have realized the real-time display of tool path; and by setting DOF node, we have simplified motion simulation of the machine, and completed the synchronous, real-time simulation for motion of the machine and display of the tool path. The final simulation result is approach to the actual operating status of equipment, and the application results are of great theoritical significance and practical application value to design optimization and operation training of the code.
Research on Dynamics of a Three-DOF Parallel Manipulator for Levelling Mechanism
Authors: Yang Hong Jun
Published: September 2013

A three-DOF parallel manipulator with two rotations and one translation was put forward as a levelling mechanism in this paper. Its structure and kinematics were analyzed and the first-order influence coefficient matrix was obtained by using the influence coefficient method. Then the complete and concise dynamic equations without too many unknowns were established based on Lagrange method. In addition, the dynamics simulation was carried out and the result shows that drive forces of the legs have no strong coupling, which is important to control system design.
Digital Human and New Type of Man-Machine Coordinated Digital Shop Manufacturing System
Authors: Zhu Hua Bing , Dong Bo Lin , Wang Zhi Sen , Liang Ben Lei
Published: September 2013

On the basis of modern technology of wireless communication and wireless local area network, a concept of Digital Human (DM) is put forward. DM change ordinary man-machine coordinated mode as DM-machine coordinated mode. Base on the discussion of the realization of DM, an innovated mode of digital shop floor manufacturing system is put forward also by introducing the mobile computing technology. Finally, the innovated mode of Man-Machine Coordinated Digital Shop Manufacturing system (MMCDSM) is presented. This paper also analyzes the network architecture and function module of this type of shop floor manufacturing system. Finally, integrating with multi-agent technology and workflow technology, a new methodology of role-based workflow modeling by utilizing multi-agent & DM is also put forward which can be applied in the MMCDSM.
Quantum Harmony Search Algorithm for Assembly Sequence Planning of Design Knowledge Resources in the Cloud Manufacturing Environment
Authors: Wang Lei , Lin Yu Cheng , Guo Wei , Zhao Nan
Published: September 2013

Facing the condition of scattered and disorder design knowledge and insufficient innovative capacity of Small and Medium Enterprises (SMEs) in Cloud Manufacturing environment, making for the design of knowledge assembled into orderly combination of knowledge resources, this paper presents the service capacity of evaluation model of knowledge resources and programming knowledge resources in the assembly sequence the mathematical model of the planning and design to solve the model of quantum harmony search algorithm (QHS). QHS algorithm bases on the Latin hypercube (LH), and improves the global search capability through the introduction of quantum coding and quantum gate transformation. Taking mold design knowledge of SMEs resources planning issues as example, according to the mathematical model, QHS algorithm aims to solve the knowledge resources assembly sequence of the optimal design in the cost and quality constraints, and verifies the feasibility and practicality of the method. This paper has practical significance to improve the overall SMEs innovation and design capabilities and make the reuse of the design knowledge more efficiency in the Cloud Manufacturing environment.
Forecasting the Success of Implementing Advanced Manufacturing Technology
Authors: Su Cheng Shih , Shih Ching Tien , Hsu Shu Chen
Published: September 2013

This paper is presented fuzzy preference relations approach to forecast the success of implementing advanced manufacturing technology (AMT). In the manufacturing environment, performance measurement is based on different quantitative and qualitative factors. This study proposes an analytic hierarchical prediction model based on fuzzy preference relations to help the organizations become aware of the essential factors affecting the AMT implementation, forecasting the chance of successful implementing AMT, as well as identifying the actions necessary before implementing AMT. Then predicted success/failure values are obtained to enable organizations to decide whether to initiate AMT, inhibit adoption or take remedial actions to increase the possibility of successful AMT initiatives.
Study of Low-Load Industrial Robot
Authors: Chen Bei Yu
Published: September 2013

In recent years, China's increasing demand for precision machining and auxiliary processing, technological innovation is increasingly urgent. After a summary and integration advantages of virtual prototyping and computer-aided software, developed a General Purpose low-load industrial robots. In this paper, the D-H method in MATLAB to establish a three-dimensional diagram of the industrial robot. Using ANSYS to do a check of the stiffness of the important components of the industrial robot mechanical systems. Finally, after the structure static analysis and verification, to improve the design of the structural components of the robot. Obtained according to the repeatedly comparison of the overall shape of variable verification data, which prove that the design is correct.
Research on Rapid Manufacturing Technology of Complicated Casting Mold without Pattern
Authors: Liu Feng , Shan Zhong De , Wang Chao Yi , Chen Lei Ming
Published: September 2013

In 21th century, the product upgrading becomes faster and faster. The development of varieties of production needs rapid manufacturing technology. The rapid fabrication of sand mold & core is the key of rapid casting. In this paper, the rapid manufacturing technology without pattern was applied to produce the complicated sand molds & cores of pump case. The digital precision forming technology without pattern casting was selected to mill the outer sand mold. And the Selective Laser Sintering (SLS) technology was used to print the sand core. So the complicated sand molds and cores were fabricated rapidly without pattern. As a typical digital manufacturing technology, the rapid manufacturing technology without pattern has a variety of benefits such as short cycle, low cost, flexibility and so on. The technology that combines the sand milling and SLS provides a high-efficiency method for the Single and small batch castings.
Study on the Gear Tooth Influence Coefficients of Flexspline of Harmonic Drive
Authors: Xin Hong Bing , Mo Han Ning , Gao Jian Cheng , Wang Wen Jing , Cui Deng Qi , Liu Long , Wang Tan , Xin Yue Fei
Published: September 2013

The gear teeth have influence on the stresses in flexspline, through the influence coefficients of gear tooth of flexspline. For the purpose of theoretically clarifying this influence, the profile of the gear tooth of the flexspline is simplified as two simple shapes of rectangle and trapezoid. The gear tooth influence on the stresses in the flexspline has been studied and analyzed on this two cases, and the two simplified tooth profiles of rectangle and trapezoid have been compared with each other.
Computer Numerical Control Machine Tool and its Development Trend
Authors: Wang Huan Yun , Liu Xiu Fen
Published: September 2013

CNC machine tools are the key equipment in the equipment manufacturing industry, which is related to the national economic construction and strategic position, and is an important symbol reflecting the national comprehensive level. This article analyzes the emergency and characteristics of CNC machine tools and its development trend such as high precision, high speed, high reliability, complex, intelligent, flexibility, integration and openness.
The Design of PID Control System which Based on the STM32
Authors: Li Yun Hong , Yan Zhi Xuan , Li Yao
Published: September 2013

Smart electric hydraulic actuator plays an increasingly obvious role in the field of industrial control. With the development of industrialtechnology, the accuracy requirements of the actuator is also rising. This paper designed a motor control system which uses STM32 from STcompany and PID algorithm.
Design of an Extrusion and Heat Setting Machine for Needled Filter Felts
Authors: Li Xue Mei , Du Yong
Published: September 2013

The setting process of the needling filter felt by heat can control its flatness and cohesion and can ensure its filtering precision. Based on this, the new type of needling process and the new type of heat treatment technology were developed, the setting arc structure and heat preservation measures were designed, the main roller working system for setting and driving motor system were designed, and they have been put into production. The comparative experiment results show that this device overcomes such defects as surface roughness, easy deformation, breathable unevenness, low intensity and short cycle in the traditional filter felt, which can complete the two processes of extrusion and heat setting for once, and the filtration precision, setting efficiency and the rate of qualified products have improved obviously.
Directional Pattern Measuring System Research of a TT&C Antenna
Authors: Qiua Dong Dong , Sun Yong Jiang , Jin Hua Song , Yu Jian Cheng
Published: September 2013

Directional pattern is a clear visual representation form of antenna radiation characteristics. Taking a certain kind of shipborne radar as example, the basic principle of the directional pattern measurement was analyzed, the basic methods and execution scheme were introduced in detail. A directional pattern automatic testing system which was based on Lavbiew was researched on the basis of existed testing techniques, and finally the directional pattern automatic measurement was realized through the use of virtual instrument GPIB and serial interface techniques.
The Intelligent Ultrasonic System for Quality Testing of Weld Connections in Turbine Runners
Authors: Xiao Kai , Shi Ya Kun , Ma Qing Zeng , Zhang Jun , Li Xiao Hong
Published: September 2013

The intelligent ultrasonic testing system possessing capabilities of defect tracking and defect simulated analyzing has been developed in this paper according to the characteristic of defects existing in weld connections in turbine runners. The passage then introduces the testing system from angles of structure, function and operation, respectively. Finally, the testing system is applied to an in-service turbine runner and the results indicate that desired efficiency and accuracy of detection in the testing system can be achieved and the mean error of the length for defects can be held within 5mm.
Obstacle Detection of Autonomous Land Vehicles for Geological Prospecting
Authors: Xie Fei , Wang Jian Hua , Wang Yun Cheng
Published: September 2013

The paper mainly introduces the method of obstacle detection of autonomous land vehicle for geological prospecting. According to the categories and characteristic of obstacles, choosing the applicable sensor is the fundamental of accurately detecting obstacles. Data processing, including information collection, information processing and collecting characteristic parameter obstacle, is the difficulty for accurately detecting obstacles.
Research of Imaging and Inversion of Seismic Attribute
Authors: Hu Xiao San , Chen Guang Xun , Qin Pan Ke
Published: September 2013

In order to improve the accuracy of inversion and quality of imaging of seismic attribute in some targeted area, a new inversion solution is proposed in this paper. By introducing instantaneous seismic inversion and hybrid inversion, the new solution can establish the geological model commendably and thus can finely depict the detailed characteristics of the structure of the stratum. Empirical results show that interpreters can obtain more precise inversion result and clearer seismic profile when adopt this new inversion solution. Hybrid inversion can deduce more reliable wave impedance, Poisson ratio, elasticity value and other important parameters, which is meaningful to the identification of oil, gas, or gas hydrate.
An Automatic Barn-Entering System for Grains
Authors: Wang Hong Wei , Li Qi Jun , Wang Zhan Hou
Published: September 2013

This paper provides an automatic barn-entering system for grains. Based on the technologies of microwave and PLC, the system may detect the grain moisture on line and control the directions of grain flows on conveyor. For the flows with moisture below the specified threshold, the grains may be made their way into the barn, otherwise rechannel the direction automatically and not permitted into the barn.Thus can avoid effectively grains' from going mouldy due to the high moisture content.
The Application of RFID at Leasing Management of Coal Mining Equipments
Authors: Zhao Si Hai , Hu Yu Wei , Zhao Zhe Qian , Guo Yan Chen , Gao Ji Ye , Zhong Peng Chao
Published: September 2013

Giving each hydraulic prop sets of the only equipment number is a problem of the management of coal mining equipments, the article has presented a method of using RFID technology to affix with a electronic tag for each hydraulic prop, through theoretical analysis and experimental research, basing on the equipment identification and identification distance reliability, confirm that the low frequency RFID electronic tags can be used as a hydraulic prop, and design the installation method of the hydraulic prop RFID chip. The paper also uses the C language compiled a RFID chips identification and transmission program, and use the RFID application system in the actual equipments leasing management information system.
RFID Technology-Based the Railway Package Management Platform Design
Authors: Yao Zhong Min , Liu Xia Onan , Liu Wei
Published: September 2013

Modern logistics management system brings a significant convenience to commercial activities and our life. Whereas low efficiency and frequent mistakes exert negative influence on the development of logistics industry. The problems exist in the process of logistics management that includes collection, sorting, storing and tracking. RFID technology is of great importance to intelligent logistics management system. This will have a good prospects in railway package management. On the basis of the RFID technology and the proposed problems, a well-performed Railway Package Information Management Platform is proposed. This platform can provide fast, high efficient, intelligent, safe and stable solutions. The Platform consists of five systems, which are handhold terminal system, sorting system, warehouse management system, tracking system and Railway Package information management system respectively. Implementation on the platform shows that it not only reduces package transportation cycle, but it also improves the stability and safety for the logistics management system. Multiple verification demonstrates that the proposed platform has a very good practicality.
GPS Multipath Estimation with Improved SNR Adaptation Performance Utilizing Adaptive Filters
Authors: Yao Yan Xin , Zhao Yun , Zeng Jun Ye
Published: September 2013

Global positioning system multipath estimation is important for both high precision positioning and reflection applications. The paper aims at proposing a method for estimating multipath parameters including carrier phases with good SNR adaptation performance utilizing adaptive filters. The method takes the signal after demodulation and spectrum dispreading for the desired signal. It is found to have a desired signal with relatively higher SNR so that the filtering performance is relatively better than previously proposed method; whats more, the method could estimate multipath code delay preferable to carrier phase ambiguity problem. Simulations validate the method can estimate multipath profile including amplitudes, code delay and carrier phases of direct path and multipath signals with small errors of 2% correct amplitude, smaller than one sampling interval code delay and 0.01 cycles carrier phase at 11dB SNR. The multipath mitigation performance of the method is better than that of narrow correlator.
The Spectral Gain Characteristics of Optical Fiber Weak Light Pre-Amplifier Based on Raman Effect
Authors: Li Wu Sen , Chen Wen Jian , Zhou Mu Chun
Published: September 2013

The spectral information of weak light will be lost in the process of amplification based on photoelectric conversion. To solve this problem, multi-wavelength optical fiber Raman amplifier is used to pre-amplify the weak light before an ordinary color photoelectric sensor. The Raman gains and their effect factors were modeled and analyzed. The results show high intensity gains can be obtained for red, green and blue components of the weak light simultaneously .
The Discussion of Appling Parametric 3D Modeling in Urban Design Based on Cityengine
Authors: Li Juan , Han Jie Yu , Hao Li Jiao
Published: September 2013

In this paper ,we explored the new method of urban design modeling based on a new rule-based parametric modeling software: CityEngine. Through combining the technology of CityEngine and ArcGIS, we can solve the problems existing in traditional urban design: complex modeling process, poor 3D visualization, low efficiency of modification and poor public participation, and can expand the new technique applications in urban design.
A System Hierarchical Method Based on Self-Resolving Message Protocol
Authors: Luo Yi , Wu Chan Le , Xiong Wei Cheng
Published: September 2013

This article defines a new self-resolving message protocol HML by departing self-describing area and data area. This protocol has limits of the layers of description area, so it could have good parse performance. The feature is proved to be true by compared with XML and ISO8583, and the protocol could be used in communication between layers in high concurrent process system.
Research on the Construction of Service Mode in University Mobile Digital Library
Authors: Tang Kai , Zhang Yuan Yuan
Published: September 2013

University mobile digital library is a new service system in digital library. Based on wireless network, Internet and multimedia technology, readers of mobile digital library can make use of a variety of mobile terminal conveniently and flexibly to access services and resources without any limitation on time and space. Service pattern of mobile digital library mainly has SMS service mode, WAP service mode, mobile reference service mode and digital full-text reading service mode. This paper discusses the architecture of mobile digital library mode, which includes base layer, content layer, technology layer and user layer, and establishes the technical framework of mobile digital library system, which has the characteristics of unique authentication, unified retrieval and comprehensive function, etc.
Optimized Tourism Destination Selection Based on InLinPreRa
Authors: Chen Hsiu Fen , Hsu Shu Chen , Shih Ching Tien
Published: September 2013

This research is regarding the optimized tourism destination selection when tourists choose tourist products or travel destinations. This study adopts the method of Incomplete Linguistic Preference Relations to simplify calculation and speed up the process of comparison and selection of alternative. This method considers only judgments, whereas the tradition analytic hierarchy approach (AHP) takes judgments in a preference matrix with n elements to establish a complete preference relation decision making matrix. According to the importance weights of evaluationcriteria, C was the optimize tourism destination.
Study on Knowledge Services Based on Multi-Media Data Mining
Authors: Han Wei
Published: September 2013

There are a lot of data in the real life showed by the form of multimedia data. But the vast majority of data mining tools are developed for the relational database. Therefore it is necessary to introduce the service in multimedia data mining and multimedia data mining technology to improve service quality and level of knowledge. Multimedia data mining and knowledge services are introduced and multimedia data mining process is given. Meanwhile, multimedia data mining system prototype framework is proposed. In the end multimedia data mining application in the knowledge services is discussed.
The Effect of SVC on Gansu Hexi Grid Static Load Margin by BPA Modeling and Simulation
Authors: Hu Qing Quan , Wang Wei Zhou , Zhi Yong , Ni Sai Sai , Cui Jian
Published: September 2013

Wind energy is very abundant in Hexi Corridor, and inspired by government policy impetus to build “the Three Gorges on land”, total installed capacity in Hexi grid has increased sharply, and Jiuquan wind power base will become the biggest connecting wind farms in the world. However, Hexi grid has a weak grid configuration, therefore, issues such as insufficient reactive power, transient stability change, and local grid voltage level decreasing could emerge with large scale wind power integration. It’s very necessary to input SVC to implement dynamic reactive power compensation, which is helpful for improving voltage stability. This paper introduces the basic principle of SVC and SVC’s working state in three situation. Then models and simulates the effect of SVC on Gansu Hexi grid static load margin by BPA. At last, proves SVC can improve static load margin.
Research on Case Similarity Method of Spade Punch Planter
Authors: Zang Jing , Guo Qian Qian
Published: September 2013

To enhance the efficiency and accuracy of case retrieval for the digital design of machinery system, the article examines a similarity calculation method based on the extension distance and puts forward a method based on the deviation information related with the similarity among properties to distribute the dynamic attributes weights which also considers the customers preference. The method based on the extension distance is applied to the similarity calculation on attributes of precision spade punch planter, and it is demonstrated that the method can process the precise and imprecise information effectively in case retrieval.
Optimal Reactive Power Compensation in Power System Considering SVC
Authors: Chen Zhen , Liang Chen , Bai Run Qing , Ma Chao , Gao Lei
Published: September 2013

This paper introduces a method for optimal reactive power compensation considering SVC. Static load margin of each node is calculated and then sorted to determine the location of reactive power compensation. To know the optimal compensating capacity, the mathematical model of fuzzy multi-objective is established, and it can be solved by the primal-dual interior point algorithm. The proposed method is applied to a grid of Northwest China with satisfactory results.
Optimization Models Based on Line Loss Post Management in Power System
Authors: Hu Qi Zhou , Zhang Xiu Ge , Huang Xun Cheng
Published: September 2013

This paper researched the post management on line loss management in power system. As while, This article studied the characters of the line loss management in power system depend on the practical experiences. it would pose a new problem to address the regulatory lacunae revealed by post management department. Meanwhile, The article established a optimal model to restrict the working time of the manager which is so-called post rotation cycle. And then, the paper gave out the further discussion about the model, and the model proved to be reliable and practical. It is of great value to probe into how to efficiently utilize management resources to improve corporation management ability and level and achieve the advanced goals.