bluuebunny/crossref_metadata_2025 huggingface dataset:
The Design of Remote Intelligent Irrigation System Based on Web Servers
Authors: Li Wei
Published: September 2013

The paper proposed program of lower-cost traditional 8-bit micro-controller with Web servers function, and is designed for remote control system. The system has the flexibility and low cost. And according to the actual needs of the decision-making and management of plant irrigation, intelligent irrigation system was designed and implemented.The system solve the difficult and critical hardware products import prices too high and difficult to promote for distribution of soil temperature and humidity monitoring.The system cost compared to similar foreign products decreased 44.8%.Compared with traditional irrigation methods, crop water use efficiency of 22.6%.The design of software and thinking can popularize and promote practical reference value, the future of smart home system.
Design of an Active-Vibration System Based on Sky-Hook Damper and Impedance Control
Authors: Yao Wu Sung , Hsueh Po Wen , Tsai Mi Ching
Published: September 2013

This paper investigates an active anti-vibration system, and the isolation of low-frequency vibration is studied. A model reference control of the anti-vibration system with a sky-hook damper and impedance control is analyzed. An illustrated example of a single-degree-of-freedom anti-vibration system driven by a tubular linear servomotor is given to verify the performance of the proposed control design. Experimental results are given to show that the peak resonance value of 0dB within a frequency of 10Hz can be achieved successively.
Research on Fuzzy Control in the Greenhouse for Humidity Monitoring System
Authors: Zhang Yue Wang
Published: September 2013

Design a smart vegetable greenhouse humidity control system based on automatic computer-controlled, elaborated on the humidity of the system acquisition, humidity control system, heater control circuits and other system hardware design ideas to improve the system's control algorithm, using serial of computer to record. The simulation curve of the system has better control and tracking performance, high precision humidity control, also composed of two computer-controlled system and the host computer, to facilitate the centralized management of the production. Practice shows that the study design, vegetable greenhouses intelligent humidity control system for man-machine interface, easy operation, high degree of automation, low cost, with a good prospect and promotional value.
Study on Integration of Computer Aided Process Planning System and PDM System
Authors: Yang Hong Xia , Chen Wei Dong , Feng Hua Sheng
Published: September 2013

With the rapid development of modern science and technology and computer technique, modern enterprise faces new challenges for product design, production, management, market planning and sales. The products of enterprises develop towards diversification, serialization and individualization. Technological design is important in product manufacturing process and is a bond of product design and actual production. Therefore, modern enterprises need to develop computer aided process planning system to improve the quality and efficiency of process design of the enterprise. Starting from the requirements of enterprises on computer aided process planning systems and combining the existing Web technology, the paper proposes the study on integration of computer aided process planning system and PDM system. The development and application of the system not only provides strong support for enterprises realizing rapid design and manufacture and strong basis for enterprises realizing computer integrated manufacturing system, but also makes informationization degree, economic benefit and social benefit of enterprises improve greatly.
Electromagnetic and Vibration Analysis of In-Wheel Switched Reluctance Motor with Notches and Projections for Electric Vehicle Applications
Authors: Shini G. Nalina , Kamaraj V. , Giridharan E. , Kannan S.
Published: September 2013

With the demand for fuels to cater the needs of day to day usage of vehicles, the best alternative solution is to use electric vehicles. In-wheel Switched Reluctance Motor (SRM) is the best direct drive motor used in electric vehicles owing to its low cost, simplicity, high torque to inertia ratio. Vibration is a major problem which causes acoustic noise. This paper deals with the design and analysis of In-wheel Switched Reluctance Motor which produces high average torque with low vibration. The above desired performance of In-wheel SRM can be obtained by modifying the stator and rotor pole shapes of In-wheel SRM with notches and projections. Electromagnetic analysis of 3 phase 6/8, 1500 rpm In-wheel SRM is done by FEA based CAD package MagNet. Average torque and Torque ripple is obtained from the static torque characteristics. 3D structural FE analysis is done to obtain the modal frequencies of In-wheel SRM. Ansys 14.0 aids in the Structural FE analysis. The performance of modified In-wheel SRM is compared with the conventional In-wheel SRM. The results conclude that the modified In-wheel SRM is superior than the conventional In-wheel SRM in terms of high average torque and low vibration.
Microstructure Studies on Different Types of Geopolymer Materials
Authors: Mustafa Al Bakri A.M. , Muhammad Faheem Md Tahir , Sandhu Andrei Victor , Alida A. , Mohd Salleh Mohd Arif Anuar , Ruzaidi C.M.
Published: September 2013

Geopolymer is a new binding material produced to substitute the ordinary Portland cement (OPC) function as a binder in concrete. As we know, different types of geopolymer will have different properties. In this research, the different types of geopolymer raw materials had been studied in term of microstructure. Different type of materials which is fly ash (class F) and kaolin had been mixed with alkaline solution consist of sodium silicate and sodium hydroxide with suitable geopolymer raw material to alkaline activator and sodium silicate to sodium hydroxide ratios. The geopolymer samples with different types of raw material were then cured at a temperature 70°C for 24 hr and maintained at room temperature until the testing was conducted. After the geopolymers were aged for seven days, the testing was conducted.
A Numerical Investigation into the Tensile Split Hopkinson Pressure Bars Test for Sheet Metals
Authors: Pham Thanh Nam , Choi Hyo Seong , Kim Jong Bong
Published: September 2013

Determination of theflow stress of materials at high strain rate is very important in automotive and military areas.The compressive flow stress at high strain rate can be obtained relativelyexactly by SHPB(Split Hopkinson Pressure Bars) tests. However, it is difficult to determinethe flow stressexactlyin the tensile state by using the SHPB tests. The difficulty in the tensile SHPB tests is how to fix a specimen on two bars. So, the design of a specimen and holders is needed to obtain more accurate measurement of the flow stress. In this study, the accuracy of the tensile SHPB tests results was numerically investigated. Finite element analyses of the tensile SHPB were carried out for various cases of fixing bolt location and bolting force. From the analysis results, a design guide for the fixing structure was obtained and the causes of error were investigated.
Lines of Curvature and Umbilical Points: Computation Method and Applications
Authors: Gianpaolo Savio , Gianmaria Concheri , Roberto Meneghello
Published: September 2013

A method for computinglines of curvatureandumbilical pointsis proposed. These properties, derived for NURBS surfaces, are useful in shape modeling for both aesthetic and functional characteristics evaluation. Moreover, the application to theship-hull designand to theprogressive additional lens design, of umbilics and lines of curvature are investigated.
The Possibilities of the Communication Methods of iCIM 3000 System and their Main Functions
Authors: Holubek Radovan , Ružarovský Roman , Velíšek Karol
Published: September 2013

Actual trends in manufacturing are characterized by production broadening, innovation cycle shortening, and the products having a new shape, material and functions. The production strategy focused on time needed change from the traditional functional production structure to flexible manufacturing cells and lines. Production by automated manufacturing system (AMS) is one of the most important manufacturing philosophies in the last years. The main goals of the project we are involved in lies on building a laboratory in which will be located a flexible manufacturing system consisting of at least two production machines with NC control (milling machines, lathe). These machines will be linked to a transport system and they will be served by industrial robots. Within this flexible manufacturing system a station for the quality control consisting of a camera system and storage system will be also located. The design, analysis and improvement of this manufacturing system, specially with a special focus on the communication among devices constitute the main aims of this paper. The key determining factors for the manufacturing system design are: the product, the production volume, the used machines, the disposable manpower, the disposable infrastructure and the legislative frame for the specific cases.
New Approach in Design of Automated Assembly Station for Disassembly Process
Authors: Holubek Radovan , Ružarovský Roman , Velíšek Karol
Published: September 2013

In this contribution is presented the new idea of another approach and application of designed and verified assembly station that can be used for disassembly process. Automated assembly station with Cartesian industrial robot is especially designed for assembly of specific products. New approach consists in the fact that such equipment can be used for disassembly of assembled products after lifecycle. This solution can be used where it can be readjusted assembly station by proposing of particular disassembly equipment that supports the disassembly process. The paper deals with the analysis of automated assembly station design methodology and with proposals for concrete actions that need to be made to the assembly station may to change to a device designed for disassembly process. This problematic solves a development of the assembly and disassembly station with respect to lifecycle management of the assembly product and also assembly system with Cartesian robot. The main idea of the development of such a device is the use of the same Cartesian industrial robot, material supply devices, assembly and disassembly units in one workplace with different application. Result of design methodology is the verification and proposition of real automated assembly and disassembly workplace with Cartesian robot for known verified model of assembled actuator.
Innovative Design of Applying TRIZ Technology to Safety Control of Low-Cost Electric Rolling Door
Authors: Huang Chin Jung , Tsai Fa Ta
Published: September 2013

The electric rolling doors are extensively used in Taiwan; however, the accidents of personal injuries caused by electric rolling doors frequently occur. The doors have caused injuries, and even casualties in worst cases. Based on TRIZ contradiction matrix and inventive principles, this study used a laser module, a photoresistor receiver, and mirror reflected refraction to construct a low-cost safety control circuit device. This safety control circuit device can be used for electric rolling doors (3m high and 8m wide) that are commonly used for residential houses. When the electric rolling door is in operation, any objects of the height over 10cm entering or existing in the range of the electric rolling door can be detected by the control device. The actuation of the electric rolling door is then stopped, and an alarm gives out warning sound, so that possible injuries may be prevented. The material cost of this control device is below 2,000 NTD, and this design is cost-effective.
Effect of Salidroside on Cardiac Functional Recovery
Authors: Zhang Yan , Zheng Zhong Hua , Wang Yue Peng , Peng Guo Liang , Wang Liu Hang
Published: September 2013

To investigate the cardioprotective effect of salidroside to rat heart subjected to 8-hour hypothermic storage and 2-hour normothermic reperfusion. Isolated rat hearts were perfused with Langendorff model; after 30 minutes of baseline, the hearts were arrested and stored by St. Thomas solution (STS) without (STS group) or with different concentration salidroside at 4 °C for 8 hours, then reperfused for 2 hours. Compared with STS group, both middle and high dosage in STS greatly improved the recovery of left ventricular developed pressure (LVDP), maximum LVDP increase and decrease rate (±dp/dt), coronary flow rate (CF). Our study demonstrated that the salidroside was beneficial to improving cardiac functional recovery.
Effect of Adding Seeds during Maceration on Color and Functional Contents of Cabernet Sauvignon Red Wine
Authors: Gao Kai , Yang Wei Qiao , Li Xi Hong , Zhang Yi Bin , Liu Lu
Published: September 2013

Red wines were made from Vitis vinifera cv. Cabernet Sauvignon in China at different methods of maceration. The effects of adding seeds during maceration on the quality characteristics, in terms of colour, and functional characteristics, of the wines before bottling were evaluated, and made a comparison with the effects of adding skins. Seed contact treatments raised wine colour intensity, anthocyanidins, and tannins in comparison to the control wine.
Preparation of N, O-Carboxymethyl Chitosan with Different Substitutional Degree and its Application for Hemostasis
Authors: Zhao Yan Wei , Liu Lu , Han Xiang , Guan Jing
Published: September 2013

We prepared N, O-carboxymethyl chitosans (CMCSs) with different substitutional degrees (SDs) to evaluate their effects of hemostasis, and provided experimental basis on biomedical materials. Chloroethanoic acid was used to synthesize CMCSs. The structure were characterized by Fourier transform infrared (FT-IR) and wide-angle X-ray diffraction (WXRD). Potentiometric titration and Ubbelohde viscometer were adopted to determine the SD and intrinsic viscosity of CMCSs. Contact angle measurements were investigated to determine surface wettability. Method of dynamic clotting time and coagulation test in vivo were used to evaluate their effects of hemostasis. SDs of CMCSs were from 50% to 110%. As the SD increased, molecular weight decreased. CMCS powder with SD 63% possessed excellent hemostasis both in vitro and in vivo. CMCS powder owned hemostatic capability prior to CS. CMCS powder with SD 63% (neither too high, nor too low) possessed excellent hemostasis both in vitro and in vivo.
Optimization of Protection Condition for Composite Freeze-Dried Starter of Paocai
Authors: Li Li , Zong Xu Yan , Xiong Li , Zhang Jing , Chen Kai
Published: September 2013

To obtain the better formula of the biomaterials lyoprotectant for composite starter of Paocai, five lyoprotectants were studied with math method those are orthogonal design, Quadratic polynomial stepwise regression and etc. The results showed, 14.7% of hydrolyzate of skim milk, 1.1% of amount of glucose, 3.4% of amount of glycerol, 5.0% of amount of sodium glutamate, 1.2% of amount of Vc were added to the culture of Lactobacillus. After lyophilized, colonies of freeze-dried starters can reach 3.25×1010 cfu/mL. Response surfaces are drawn according to the mathematical model among factors, and it was discussed the impact of lyoprotectants.
Study on Security Risk of Impounding Safety in China's Small Reservoir
Authors: Yuan Hui , Li Dan Dan , Zhang Kai
Published: September 2013

Recently, there were many accident of small dam break of reservoir in China, which reflects a problem in construction and management of small reservoir. By studying over 306 reservoirs which have been reinforced, the main problems to the safety operation of reservoir were concluded. The main 17 problems and 10 questions were discussed in this paper and the answers and suggestions are also made.
Influence of Size of NiO-SDC on the Electrochemical Properties for SOFC Anodes
Authors: Qi Li Jing , Liu Wen Yan , Wang Hai Yan
Published: September 2013

NiO and SDC Powders were Prepared by Sol-Gel Method and then Calcined at 400、600 and 800°C. Nio-SDC Anode Materials were Synthesized by Solid State Reaction According to the Mass Ratio of Nio:SDC=65:35 Ratio . XRD Measurement Showed that Powders Consist of Two Phases, the Cubic Nio and Fluorite Structure Ceria . the Grain Size was Shown to Increase with Increasing Temperature. the Cermet with Ni-SDC Powders Calcined at 400°C Showed the Highest Electric Conductivity and a Lower Degree of Polarization.The Electrical Conductivity was 4155Scm-1and Overpotential was 0.12V at 600°C.
The Degradation of Decabromodiphenyl Ether in the Supercritical Fluid
Authors: Qi Sheng Nai , Linghu Wen Sheng , Sun Chun Yan
Published: September 2013

Currently, environmental contamination by polybrominated diphenyl ethers (PBDEs) in the world is of important concern and requires the effective remediation technologies. The degradation of decabromodiphenyl ether (BDE-209) in the supercritical n-hexane by zerovalent iron was studied in this work. The results showed that BDE-209 can be rapidly reduced into nona-, octa-, hepta-and lower brominated polybrominated diphenyl ethers (PBDEs) under the supercritical reaction conditions. Among n-hexane, methanol, tetrahydrofuran and mixed n-hexane+ tetrahydrofuran solvents, the conversion of BDE-209 in tetrahydrofuran was the highest. BDE-209 conversion increased with increased reaction temperature and pressure. Under the reaction condition: temperature: 523K; pressure: 3.2Mpa; reaction time: 10min; reaction system: 200ml 50mg BDE-209/L n-hexane; atmosphere: N2and catalyst load: 2g/L, the conversion of BDE-209 was as high as 88.9%.
Curing Kinetics of Anisotropic Conductive Adhesive in the Manufacturing Process of RFID Tags
Authors: Fan Shou Yuan , Chen Jian Kui , Yin Zhou Ping
Published: September 2013

The study of the epoxy-based anisotropic conductive adhesive in electronic packaging interconnects applications (chip-on-glass, chip-on-flex, etc. especially in RFID applications) has received particular attention. This is due to its potential advantages of finer pitch printing, reducing environmental contamination. The thermal curing process is critical to develop the ultimate electrical and mechanical properties of the ACA devices. In this article, the curing kinetics of ACA was studied with a differential scanning calorimeter (DSC) under constant heating rates conditions in the range of 520 °C/min. The model free method was used to describe the curing reaction. The degree-of-cure and the activation energy through the whole conversion range were mathematically determined and used to predict the progress of the curing process. Experimental results show that the activation energy of the ACA varies significantly with degree-of-cure during the curing process. The peculiar phenomenon indicates that the ACA underwent a complex series of reactions. The kinetics of curing reaction changes when large conversion values are reached at low heating rates. The change in the reaction kinetics is due to vitrification of the ACA during heating. In addition, the degree-of-cure of the ACA as a function of bonding times during isothermal ACA bonding process was theoretically predicted.
Enhancements in Dielectric Constants of Polyaniline/ Polybenzobisoxazole Nanocomposites
Authors: Yang Guang , Chen Dan Dan , Zhang Kan , Liu Xiao Yun , Li Xin Xin , Zhuang Qi Xin , Han Zhe Wen
Published: September 2013

A series of composites of Polyaniline (PANI) and Polybenzobisoxazole (PBO) nanocomposites were prepared with different PANI compositions. The methanesulfonic acid (MSA) was used as dopant and solvent. The structures and morphology of the obtained nanocomposites were fully characterized by FT-IR, TGA, SEM and TEM. The effect of mass fractions of PANI, temperature and frequency on the dielectric property was studied. The PANI exhibited highly homogeneous dispersion in PBO matrix. The dielectric constants of the composites increased with PANI content and the testing temperature and decreased with frequency.
The Study of Surface Longitudinal Crack on SPA-H Steel Slab by CSP
Authors: Peng Qi Chun , Zou Jian , Qiu Lei , Tong Zhi Bo , Xiong Wei
Published: September 2013

By the means of Metallographic analysis, scanning electron microscope (SEM), and energy spectrum analysis, the development of SPA-H surface middle longitudinal crack was studied. To find out the causes of the longitudinal crack, statistical method was adopted. The result shows that, the generating process of longitudinal crack was: the changing of mould powder owing to Ti and Al element, low overheating degree, and bad slag smelting, which leading to bad transfer heat of slab and depression. For the thermal stress of solidifying contraction, molten steel static pressure, and mould friction, the stress concentration was produced in the weak place of solidified shell, for example, in the small equiaxial crystal less than 1mm. the cracking occurred when the stress more than allow strength of high temperature slab.
Experimental Study on Coal Sample's Methane Desorption Law in Different Adsorption Balance Pressures
Authors: Zhang Shu Tong
Published: September 2013

Taking 7 group anthracite coal samples which size is 1¡«3mm from different coal mines of the same mine field as research objects, there carried coal samples' methane adsorption and desorption experiment under the condition of about 1Mpa¡¢2Mpa¡¢3Mpa¡¢4Mpa adsorption equilibrium pressures and adsorption equilibrium temperature 20¡æ. The coal samples' cumulative methane desorption volume of each minute were measured in the initial 30 minutes time, and there obtained the desorption data. Based on experimental data analysis found that the methane desorption law between cumulative methane desorption volume and desorption time is fit to SUN Chong-xu Formulate (Q=ati). Then aimed to the same coal sample, the desorption eigenvalues of different adsorption equilibrium pressures were studied using SUN Chong-xu Formulate based on the experiment data. The study results show that the coal sample's desorption eigenvalues of different adsorption equilibrium pressures keeps a constant, and the average eigenvalues is 0.237 for these experiment samples. Then 1~3mm size coal samples can be used to determent methane content when the loss time less than 8 minutes.
Effect of Surface Treatment on the Properties of PPTA Fiber
Authors: Jia Zhao
Published: September 2013

In this article, the potassium permanganate solutions (KMnO4) was used to treat the PPTA fiber based on an orthogonal experimental design. The optimum conditions of KMnO4treatment were concentration of 20%, temperature of 30°C and treating time of 20min. The interfacial properties of aramid fiber/epoxy composites were investigated by the single fiber pull-out test (SFP), and the results showed that the interfacial shear strength (IFSS) of aramid/epoxy composites was remarkbly improved.
Studies on the Preparation and DeNOx Performance of MnxOy/CNTs Catalyst for Low-Temperature Selective Catalytic Reduction
Authors: Ren Bing Nan , Yang Qiao Wen
Published: September 2013

The metal oxide catalyst was prepared by loading MnxOyon carbon nanotubes (CNTs) with impregnation method. Then the catalyst was characterized by BET, TEM and XPS, and the catalytic activity of the catalyst for selective catalytic reduction (SCR) of NO at low-temperature was investigated. The results showed that the species of active components loaded on the catalyst were MnO2and Mn2O3. The NO conversion was improved with reduction temperature increase under 250°C, increased slowly over 250°C. The O2content had an outstanding effect on NO conversion of catalysts at a low concentration range. Once the oxygen content was enhanced over 5%, there was no significant increase in the NO conversion. With the increasing of space velocity, the NO conversion rate was decreased under the reaction conditions.
Forming Stability Analysis of Surface Flexible Rolling
Authors: Li Ren Jun , Li Ming Zhe , Cai Zhong Yi
Published: September 2013

Surface flexible rolling method, using two integral working rolls as the forming tool, can achieve fast, flexible and continuous manufacturing of three-dimensional sheet metal parts. This paper introduces the basic principle of surface flexible rolling and discusses the numerical simulation results when the working rolls are bended as circular arcs. The stability indicates the forming effect to some extent and the flow type of the metal can be deduced from stability analysis. To integrate and analyze the simulation results by means of reverse engineering. The analysis results show that the forming process is stable and the effect of surface flexible rolling is fine. It also indicates that inhomogeneous deformation and accumulation occurs during the process. The numerical simulation and experimental results demonstrate that the surface flexible rolling is a feasible and effective way to form three-dimensional sheet metal parts.
First-Principles Study on Chemical Bonding Characteristics between Cr and Single-Walled Silicon Nanotubes
Authors: Wu Ai Qing , Yang Li
Published: September 2013

The adsorption energy and structural properties of Cr doped armchair (5, 5) single-walled silicon or Carbon nanotubes are investigated in detail by the first-principles theory. It is found that Cr atom above on hole position is most energetically favorable for SWSiNTs, which means that Cr atom is prone to absorb on Silicon nanotubes than Carbon nanotubes. Structural analyses suggest that Cr adsorption in silicon nanotubes induces the dehybridization of mixed sp2-sp3hybrid orbital and the subsequent formation of sp3-like orbital. That enhances the adsorption energy of silicon nanotubes.
Application of Virtual Instrument in Geological Exploration Equipment
Authors: Hu Yu Le , Yang Tao , Yang Guo Wei
Published: September 2013

To ensure wire-line core drilling process more safe, efficient and quality, a real time monitoring and control system for drilling rig was built based on virtual instrument technology. Currently, the geological exploration have more precise requirements of many parameters, this system is very helpful for geological exploration. The system took IPC as main controller and used multi-sensors through DAQ card or serial port to monitor multi-parameters. Simultaneously, instructions ordered by host computer through digital-to-analog output card transmit to actuator, such as solenoid valve, to control drilling processs parameters. LabVIEW graphic oriented software platform provides a flexible and reliable support for drilling parameters supervisory control and data acquisition system. This applied engineering software offers a complete monitoring for several parameters of drilling rig.
Output Displacement Analysis of Symmetric Four-Bar Mechanism with Right Angle Flexible Hinge
Authors: He Lei , Lv Chuan Yi , Yang Xian Hai
Published: September 2013

in order to analyze the guide beam output displacement of the right-angle flexure hinge symmetrical four-bar mechanism, a half beam model was established based on the special structural characteristics and deformation characteristics. The formula of guiding displace were derived using approximate beam deflection curve equation. The finite element analysis of the model was carried out by ANSYS, it analyzed the cause of the theoretical value and simulation value for different reasons.
An Improved Genetic Algorithm for Flexible Job-Shop Scheduling Problems
Authors: Kang Yan , Wang Zhong Min , Lin Ying , Zhang Yi Fan
Published: September 2013

The flexible job-shop scheduling algorithm with the high computational complexity is important in both fields of production management and combinatorial optimization. We developed an improved genetic approach for the flexible job-shop scheduling problem (FJSP), since it is quite difficult to achieve an optimal solution to this problem within reasonable computation time. A chromosome representation combines both routing and sequencing information is represented with genetic algorithms (GAs) commonly optimize the problem by minimizing an objective, makespan. Our algorithm selects the chromosome according to different objectives, and crossover each other to maintain the species diversity. New crossover and the mutation operators utilize the critical path with certain probability to modify assignment and sequence for preventing being trapped in a local optimum. The results obtained from the computational study have shown that the proposed algorithm is an effective approach for the FJSP.
Evolutionary Topology Optimization Design of Rotary Lobe of Roots Vacuum Pumps
Authors: Chen Xiao Ming , Lai Xi De , Zhang Xiang , Zhou Xiang
Published: September 2013

Aiming at the mass flow and high speed operating condition of roots pumps, the evolutionary structural optimization method was used to optimize rotary lobe of roots vacuum pumps. During the optimization process, filtering and removing algorithm based on the join traits of distortion elements were proposed for solving the structural mutation phenomenon. In this way, the ESO method was improved to ensure the stability and continuity when optimizing. Optimizing respectively with 5 different initial rejection ratios, then a reasonable structure was obtained by finite elements contrastive analysis. Results of finite element comparative analysis indicate that the new structures have better stress distribution, and the material utilization is maximized when applying the inertial load. The maximal stress, strain and deformation of new structure decrease by 17.7%, 17.5% and 18.7%, respectively, and the volume decrease by 55% comparing with primary structures, thus the safety and stability of roots pumps have a significant improvement at the high speed and mass flow operation conditions.
A Low Power Trust Routing Scheme for Energy Sensitive Wireless Ad Hoc Network
Authors: Chen Hong Song , Shang Xue Wei , Ye Fei
Published: September 2013

With the rapid development of mobile ad hoc network, energy and trust are important to the network. Energy consumption and trust routing scheme are the main issues in mobile ad hoc network. Trust routing is related to many factors such as hop numbernode residual energy and node behavior. To use the multi-source information, multi-agent information fusion method is used to design trust routing scheme. The definition of trust routing is proposed. Ad hoc On-Demand Distance Vector (AODV) routing protocol is used to validate trust routing scheme, Route Reply (RREP) Message is extended to record node residual energy and behavior information. NS-2 simulator is used to simulate different network scenarios. Simulation results show that low power trust routing scheme can improve the security and efficiency of network, the scheme is sensitive to node residual energy, so it extends the service lifetime of the network.
InSAR Adaptive Extended Kalman Filter Phase Unwrapping Algorithm
Authors: Hao Hua Dong , Bai Ting Yi , Liu Guo Lin
Published: September 2013

Phase Unwrapping (PU) is the key step in the image processing for Interferometric Synthetic Aperture Radar (InSAR). In the Extended Kalman Filter (EKF) model of PU, due to the state space model is not taken into account the terrain factors, it is often resulted in unwrapping error delivery as the pixel to the next when the state changes rapidly in steep terrain. The observation equation is nonlinear and usually applied in PU through linear processing, requiring the system model and noise statistics known. But in fact the mathematical model or statistical noise is completely or partially unknown; the results have been inevitably lead to the declining of valuation accuracy and filter divergence. If directly applied in phase unwrapping, it is made impossible to retrieve surface deformation. In order to solve this problem and fully consider the terrain effect and model error, an adaptive EKF PU algorithm (AEKFPU) for InSAR is presented. On the one hand, it is achieved local adaptive estimation of image fringe frequency through 2D FFT and Chirp-Z Transform (CZT) joint method, by considering the impact of terrain factors on unwrapping results; On the one hand, the fading factor is calculated by innovation covariance and adaptively adjusted with the error covariance so as to suppress the memory length of the filter, compensating the effect of incomplete information on unwrapping. The experimental results are proved the proposed method is effective, it can be dealt with phase unwrapping and filtering simultaneously, and can be adaptively considered terrain factors in state space model and compensated for model error in observation equation model, ultimately improving the accuracy of phase unwrapping.
Recent Advances in Preserving Privacy Data Mining
Authors: Yang Gao Ming , Li Jing Zhao , Zhang Shun Xiang
Published: September 2013

A number of privacy preserving techniques have been proposed recently in data mining. In this paper, we provide a review of the state-of-the-art methods for privacy preserving data mining. and discuss methods for randomization, secure multipart computation, and so on. We also make a classification for the privacy preserving data mining technologies, and analyze some works in this field, such as data distortion method for achieving privacy preserving association rule mining. Detailed evaluation criteria of privacy preserving algorithm were illustrated, which include algorithm performance, data utility, and privacy protection degree. Finally, the development of privacy preserving data mining for further directions is given.
Design of a Wave Shifter with the Exit Direction Controllable Based on Coordinate Transformation Theory
Authors: Yan Wen Yan , Ke You Gang
Published: September 2013

We propose a wave shifter with the exit wave direction controllable by using a transformation-medium slab. The coordinate transformation takes two steps. One is along the longitudinal axis to realize shift and the other is on the transversal axis to adjust the exit directon. By using coordinate transformation theory, the constitutive parameters of the slab are obtained. Numerical simulations are further given to validate the performance of the theoretical design.
Construction of Financial Information Education Platform Based on Information Technology
Authors: Hu Nai Jing
Published: September 2013

The financial information technology talents with practical abilities are an important guarantee for the successful construction of Shanghai as an international financial center. This thesis analyzes, from the perspective of market demand, the current situations about cultivation of financial information technology talents and insufficient cultivation of the same, exemplified by construction of a financial information education platform, discusses the reform of finance-oriented innovative cultivation modes, the double-line course system characteristic of the financial industry, and financial practice embodied as experiment, and explores the feasibility of the abovementioned items, so as to improve the cultivation of financial information technology talents professional abilities.
A Cloud Computing Architectural Model Based on Virtual Machine Pool
Authors: Jiang Wu Xue , Hu Hui , Yin Peng Fei , Luo Jian Feng
Published: September 2013

Cloud computing is a new-type of computing model. This paper deeply expounded the key technology of virtualization and cloud computing through theoretical analysis and practice research on cloud computing and its architecture. Then, it proposed a common cloud computing architecture model based on virtual environment, which consisted of layers of data center, cloud file system, computing model, data management, and application development. In addition, it realized a cloud computing platform based on Hadoop.
Design and Algorithm Optimization of P2P-Based Hybrid Architecture Network Collaboration System
Authors: Li Xing , Wang Pin
Published: September 2013

The network collaboration system refers to that the users in different locations can see and hear each other through the collaboration system, and can share and browse the text, video, web pages, etc., so as to achieve the purpose of joint work and joint learning. Based on the needs of this collaboration system, this system was studied and designed, the system was based on P2P bottom layer and designed different logical topologies under different collaborative application circumstances, and it designed the topology with the combination of mesh and tree structures according to the particularity of P2P live broadcast, moreover, regarding keys affecting the system performance, i.e. service node lookup, it proposed new algorithm and conducted the optimization.
Anonymity Query Method of Outsourced Database
Authors: Zhang Yong Hua
Published: September 2013

This paper analyzes the traditional outsourcing model (TOM). Aiming at that TOM has disadvantages such as low security on User Privacy, this paper proposes a new access model in outsourced database. Using the trusted third party (TTP ) makes all operations in the database become anonymous in order to achieve the purpose of user privacy protection.
Brief Discussion on Obstacles and Strategies of Furniture Enterprises in Resorting to Third Part Logistics
Authors: Zhang Wei Mei , Zhang Qiu Mei
Published: September 2013

Nowadays, under the great background of increasingly fierce competition and more refined social division of labor, there are more advantages for the furniture enterprises to resort to the third party logistics. In order to improve the development level of the third party logistics, furniture enterprises should provide macro guarantee, determine correct logistics ideas, set up professional third party furniture logistics enterprises, and select appropriate third party logistics mode.
The Correlation between R&D Activities and Income Rate in Addition to Gross Profit Rate of the Enterprise Operation
Authors: Chiao Tina C.
Published: September 2013

As the trading volume by institutional investors in Taiwans stock market increasing in recent years according to information of Taiwan Stock Exchange Corporation, the influence on financial performance by the institutional investors is getting more and more important although institutional investors play a monitoring role to the company. Thus the impact of R & D activities on the financial performance of enterprises is studied frequently. This study focuses on the impact of R & D activities on income rate in addition to gross profit rate of the Enterprise Operation. The implication in practice is that business must attract research and development intensity (RDI) relative to research and development density (RDD) to improve future business value.
A Game-Theoretical Capacity Allocation Scheme Design under Seasonal Demand
Authors: Zhou Jian , Fang Ting , Wang Zhao Wei
Published: September 2013

In this paper, we study capacity allocation under seasonal demand in two-echelon supply chain. In this supply chain the supply and demand is seriously out-off-balance. In detail the capactiy of the supplier decreases in high-demand state while the capacity can be fully released in low-demand state. Hence a game-theoretical capacity allocation scheme is proposed to increase retailers’ orders in low-demand state. This allocation scheme based on turn-and-earn uses orders in low-demand state to allocate capacity in high-demand state. Our competitive game is base on Nash equilibrium. A contract based on Nash equilibrium is designed to guarantee a reasonable allocation of interests between the supplier and retailers by changing incentives. We show that turn-and-earn allocation does coordinate the system and with cooperation both the supplier and the retailer can both benefit from it. A numerical study is conducted.
Analysis on Pilot's Behavior Shaping Factors upon Aviation Case Base
Authors: Xue Hong Jun , Liu Wen Meng , Wang Yan Ling , Fang Wen , Zhang Si Wei , Chen Xin
Published: September 2013

In recent years, over 75% civil aviation accidents are caused by pilots manipulation mistake or cognitive error, but there is still no quantitative method to research pilots error. With the statistics and analysis of NTSB (National Transportation Safety Board) aviation database, the aviation case base ontology model has been established in the paper, which was the closest airworthiness directive to classify the aviation accidents according to the classification of aviation system. The pilots error in the aviation accident and the factors possibly causing the pilots error were analyzed based on Reason model to propose the inducing factors for pilots error. With the human factor analytical method, the behavior factors inducing the pilots error obtained from the pilot himself included excessive manipulation number, external environment interference, insufficient experience, physiological and psychological conditions, insufficient time margin. Pilots behavior shaping factors can guide the rational design of manipulation procedure and pilot training, thus enhancing the flight safety.
Research and Discussion of the Low-Salt Dyeing of Reactive Dyes
Authors: Lei Xu
Published: September 2013

The application of effect in substitute salt DT in the low-salt dyeing of reactive dyes on cotton fabric is discussed in the research. The optimum content of DT is measured by analyzing the degree of color-fixation, K/S value etc. Compared with the traditional treatment using the agent of sodium sulfate, adding substitute salt DT in reactive dyeing is more degradable and eco-friendly to the nature.
Structure and Thermal Stability of Sugarcane Bagasse Cellulose Regenerated from Dialkylphosphate Ionic Liquids
Authors: Wang Meng , Cui Li Hong , Li Ji Hua , Wei Xiao Yi , Wang Fei , Huang Mao Fang , Wang Qing Huang
Published: September 2013

A phosphate-based ionic liquid, 1-ethyl-3-methylimidazolium diethylphosphate ([EMI[DE), was synthesized and used to dissolve sugarcane bagasse cellulose under microwave radiation. The original and regenerated cellulose were both characterized by X-ray diffraction, infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. The results showed that cellulose had a more porous and less crystalline structure after regeneration, whereas chemical composition had no change. Thermal stability of the regenerated cellulose was somewhat lower, corresponding to the decreased crystallinity. In short, the treatment with [EMI[DE led to desirable structural modification on sugarcane bagasse cellulose via physical process. This is of great benefit to the subsequent downstream processes, such as enzymatic hydrolysis and ethanol fermentation.
Difference Analysis of the Organic Acids Content of the Different Leaf Position in Flue-Cured Tobacco
Authors: Jing Yan Qiu , Liu Xiao Di , Lei Jin , Li Guang Liang , Xue Li Xin
Published: September 2013

The pre-treatment of sulfuric acid methyl ester with gas chromatography-mass spectrometry (GC/MS) analysis techniques was utilized to study the difference of the organic acid content in different flue-cured tobacco leaf (L8-L12): from the bottom of the eighth leave up to the twelfth leave) and its influence on flu-cured tobacco quality. The results show that malic acid, γ-e ketone acid, citric acid, malonic acid, linolenic acid and palmitic acid had a higher content relatively in different flue-cured tobacco leaves and they are the main acidic components.The difference of total organic acids content from the eighth to the twelfth leave was L8>L9>L12 >L10>L11; The content proportion ranges of non-volatile acid, senior saturated fatty acid and senior unsaturated fatty acid in total organic acids were 88.49%~94.38%,3.01%~5.10% and 2.61%~6.40%, respectively. The difference analysis of organic acids content in different leaf position indicated that the organic acids content in the eighth and twelfth leaves was moderate and they could be considered as the superior and slap-up tobacco raw materials.
Study on Experimental System for High Temperature Ceramic Filter
Authors: Li Yun Lei , Jiang Ling Bo
Published: September 2013

High temperature ceramic filter is designed and implemented for purification of hot coal gas, and then an experimental system is build in order to test its filtration performance. The reverse-pulse-jet-cleaning is introduced in detail. Finally, field experiment has been carried out and the results show that the ceramic filter keeps a high dust control efficiency and long on-line stability.
Dynamic Buckling Behaviors of Steel Cylindrical Shell Subjected to Conventional Explosion Impact Loading
Authors: Chong Ji , Gao Fu Yin , Li Xing Hua
Published: September 2013

Experimental and numerical simulation researches were presented on dynamic buckling behaviors of cylindrical shell subjected to explosion loading.An account is given of some principal observations made from a series of experiments in which steel cylindrical shells were subjected to central impact by 200g cylindrical TNT dynamite with different distances.By means of an finite element computer code LS-DYNA,the nonlinear dynamic response process of the cylindrical shells subjected to explosion loading were numerically simulated with Lagrangian-Eulerian coupling method. The numerical simulation results were in good agreement with experimental data. The results provide a reference for the design of explosion-resisting structures.
Effects of Y, Gd on Microstructure and Mechanical Properties of AZ61 Magnesium Alloy
Authors: Song Xiao Jie , Li Quan An , Fu San Ling
Published: September 2013

The effects of Y and Gd on the microstructure and mechanical properties of AZ81 magnesium alloy were studied by alloy preparation, microstructure analysis and mechanical property testing. The results show that moderate addition of Y and Gd to AZ61 magnesium alloy can obviously refine grains of AZ61 alloy, and decrease the amount of Mg17Al12phase. With the increase of alloying elements, the tensile strength and elongation of aged AZ61 magnesium alloy at the temperature ranging of 25°C～175°C rise at first and then drop.When content of Y and Gd is up to 2.7%，the values of tensile strength of the alloy at room temperature and 175°C are up to their maximums, 254MPa and 164MPa respectively, while the elongation of the alloy are 22.9%,18.7% respectively. Y and Gd improve the mechanical properties of AZ61 alloy because of the grain refining strengthening, solution strengthening and the dispersion strengthening.
A Preliminary Study on Influence of Anion Created by Anion-Fiber Used for Decorative Material on People's Physiology and Psychology
Authors: Zhao A. Meng , Cui Guang Cheng , Ding Yong Zhuo , Yu Ting , Xu Jing Chao
Published: September 2013

This study was conducted to examine whether negative air ions created by anion-fiber would influence the human physiology and psychology. Dynamic continuous blood pressure and electroencephalogram were examined during a 5-h exposure to negative air ions created by anion-fiber in ten adult healthy volunteers. Physiological experiment research was carried out in environmental science laboratory with the anion-fiber curtain. The concentration of negative ions is above 1300 ion/cm3 and the normal standard is 720 ion/cm3.The results suggest that the dynamic continuous blood pressure and skin temperature could possibly be reduced (P<0.01) and the β index of each region decreased significantly.
Effect of Technical Factors on the Quality of Surface Composite Layer
Authors: Jia Li Xiao , Cui Qi
Published: September 2013

The effect of technical factors on the quality of surface composite layer is studied by conventional cast-penetrating process. The result indicates that the high-quality surface composite layer is prone to get when pouring temperature is suitable and the suitable pouring temperature is 1650°C for little cast steel. Appropriate thickness of coating layer is benefit to get surface composite layer with high quality and the quality of sample with 5mm coating layer is better than other samples in test. Surface composite layer with high quality is easy to obtain when coating layer is located in the side of foundry mould.