bluuebunny/crossref_metadata_2025 huggingface dataset:
Uncertain Internet Public Opinion Emergency Decision-Making Method under Interval-Valued Fuzzy Environment
Authors: Zhang Qian Sheng , Xie Bai Lin , Zhang Xin Meng
Published: January 2015

In order to facilitate government making timely decision for multiple internet public opinion emergencies with interval fuzzy indicators, we first determine the rational weight of each emergency decision index based on fuzzy information entropy of interval index. Then we aggregate all the interval index values to obtain the comprehensive alarm interval of each emergency. Finally, we can get the priority of emergency operation of all the internet public opinion emergencies according to the possible degree between their alarm intervals.
Application of Intelligent Optimization Algorithm in Mechanical Design
Authors: Dou Sha Sha
Published: January 2015

Mechanical optimization design is a new design method in the development foundation of the modern mechanical design theory, the application of optimization design in mechanical design can make the scheme achieve some optimization results in the design requirements specified, without consuming too much computational effort. The corresponding mathematical models of ant algorithm and Cellular ant algorithm are established, according to the actual mechanical design problems, and used to solve the established mathematical model by computer, so as to obtains the optimal design scheme.
Numerical Simulations of Elliptical Hollow Gaussian Beams Propagating in Strongly Nonlocal Media
Authors: Yang Zhen Feng
Published: January 2015

The evolution of elliptical hollow Gaussian beams propagating in strongly nonlocal nonlinear media is investigated. As examples, this paper mainly focuses on the evolutions of the transverse intensity and the beam width of elliptical hollow Gaussian beams with the beam order being 1 and 3. The results show that the evolutions of the transverse intensity and the beam width are both periodical and the size of the evolution period is determined by the input power. There exists the transverse reverse transform for the beam width when selecting a proper input power, which is quiet different from the circularly symmetric hollow Gaussian beams.
Calibration of Saturation Flow for Signalized Intersections
Authors: Ren Liang
Published: January 2015

Transport infrastructure has been playing an increasingly important role to the world economy. Intersections have been widely accepted as the bottlenecks for an urban transport system. As such, the intersection design has been of great importance for transport agencies. Saturation flow is the most important design parameter for traffic signal timing. In this study, we aim to calibrate saturation flows for signalized intersections. Based on calibrated saturation flows, we thus intend to examine whether headways between consecutive vehicles during a queue are affected by intersection shapes and speed limit. To this end, five signalized intersections are observed to collect time headways. According to collected time headways, saturation headways in various cycles are calibrated using linear regression models. Finally, according to analysis of variance (referred to as ANOVA hereafter), we reveal that there is no direct relationship among speed limit, intersection shape, and saturation headways.
A Real-Time Image Processing Method for Multi-Beam Forward-Looking Sonar of AUV
Authors: Gao Lei , Xu Hong Li
Published: January 2015

The key of real-time obstacle avoidance for AUV is to accurately and fast identify underwater obstacle. In this paper, according to the characteristics of the multi-beam forward-looking sonar of AUV, we extracted the obstacle information from sonar image with the image filtering, fuzzy clustering and morphological methods. Finally, it can be proved that the real-time image processing method is feasible and effective by the lake trial.
Approach for Negotiation Problems in Multi-Agent Systems for DC Micro Grid Using Multi-Objective Evolutionary Algorithms
Authors: Mauledoux Mauricio , Mejía-Ruda Edilberto , Caldas Oscar I.
Published: January 2015

The work is devoted to solve allocation task problem in multi agents systems using multi-objective genetic algorithms and comparing the technique with methods used in game theories. The paper shows the main advantages of genetic algorithms and the way to apply a parallel approach dividing the population in sub-populations saving time in the search and expanding the coverage of the solution in the Pareto optimal space.
Knowledge Discovery in Incomplete Medical Data Using Flow-Graph Networks
Authors: Wang Yan , Hang Lu Bin , Liu Feng , Jiang Bin
Published: January 2015

Clinical data are inevitably incomplete, and most knowledge discovery algorithms lack the capability to contend with missing data. Flow-graph confers some distinct advantages in data mining and knowledge discovery. However, flow-graph methodology is not able to comprehensively solve the incomplete data problem. This paper proposes a flow-graph network approach for extracting knowledge from incomplete medical data. The concept of incomplete-medical-diagnosis-flow-graph (IMDFG) was defined. To evaluate the diagnosis rules within theIMDFG, the computing method for the certainty factor and coverage factor are presented. Moreover, the application of flow-graph network can be useful for extracting comprehensibility knowledge from the incomplete medical data. In an illustrative medical example, the clinical diagnosis rules are induced and interpreted in accordance to the generated flow graphs.
Shadow Rendering Technology in the Application of Virtual Simulation System
Authors: Zhao Zhi , Chen Gui Qiu
Published: January 2015

This thesis mainly discusses the basic theory of the real-time lighting and shadow and the application of virtual simulation system in the virtual simulation field, introduces the light model and shadow generation algorithm more detailedly which are applied in virtual simulation field virtual simulation system according to the actual situation finally.
The Poultry Meat Production Technical Efficiency Analysis Model Based on Intelligent Devices
Authors: Niu Xiang Jie , Li Hua
Published: January 2015

The paper focuses on the poultry meat production efficiency analysis methods. In the poultry meat production procedure, the randomness is strong due to the various complex factors in the poultry meat production which will reduce the production efficiency. In order to avoid the defects of the traditional algorithms, the paper proposes the poultry meat production efficiency analysis method based on RBF neural network algorithm. The effect factors in the poultry meat production will be sifted as the basic data for production efficiency analysis. The RBF neural network model is built and the output results are used to analyze the poultry meat production efficiency with intelligent devices. The experiment results illustrate the improved algorithm can increase the poultry meat production efficiency.
Visual Attention Distribution and its Application in the Gesture Interaction System
Authors: He Na Na , Feng Zhi Quan , Huang Zhong Zhu , Yang Xue Wen
Published: January 2015

Aiming at making the simulation of human visual attention behavior more truly in computer, starting from analyzing operator’s cognitive model, a gesture tracking algorithm is put forward based on the distribution model of visual attention. To begin with, analyzing the change of the operator human eye sight, a visual attention model was built. Secondly, the basic characteristics of visual attention model were studied. Finally, the three Gauss formula is used to describe the model. Experimental results show that the algorithm can effectively improve the speed and tracking accuracy of gesture interaction.
A Multipath Routing Protocol Based on the Quality of Service Aware
Authors: Wang Yi Quan , Liu Sha , Zhang Deng Yin
Published: January 2015

To meet the practical demands of mobile Ad Hoc network on quality of service, we proposed an improved wireless on-demand routing protocol on the basis of traditional AODV. We integrate multi-path routing into route discovery process and arrange data originated from source to be transmitted over several different paths concurrently, and defined the path level to evaluate the path’s transmission ability based on its available bandwidth. Numerical simulation results demonstrate the proposed routing protocol outperforms AODV in end-to-end delay, packet delivery rate and network lifetime.
ADO.NET Database Access Technology
Authors: Lin Ying Jian
Published: January 2015

With the development of ASP.NET platform, ASP.NET architecture system increasingly mature and increasingly wide range of applications, ADO.NET technology to become the key technology of this system, database access, data processing and application development. This paper mainly studies the database access of ADO.NET. First introduced ASP.NET technology and several ways of ASP access to the database, which shows the advantages of ADO database access; secondly expounded the principle of ASP.NET access to the database, ASP.NET to access database through the ADO of the internal components; then introduces the main object types of ADO.NET database access required, ADO.NET is an improved version of ADO, including Command, Connection, DataAdapter, DataSet and DataReader, and so on. And describes their respective functions; finally, introduces the basic process of ADO.NET to access the database. And implementation of SQL Server database connection.
Correlation Analysis of Software Defects Density and Metrics
Authors: Zhang Wei , Ma Zhen Yu , Zhang Wen Ge , Lu Qing Ling , Nie Xiao Bing
Published: January 2015

It is very useful for improving software quality if we can find which software metrics are more correlative with software defects or defects density. Based on 33 actual software projects, we analyzed 44 software metrics from application level, file level, class level and function level, and do correlation analysis with the number of software defects and defect density, the results show that software metrics have little correlation with the number of software defects, but are correlative with defect density. Through correlation analysis, we selected five metrics that have larger correlation with defect density, these metrics can be used for improving software quality and predicting software defects density.
Design and Implementation of Information Push Service Platform in Mobile Intelligent District Based on JXTA
Authors: Huang Lian Fen , Liu Jian Yuan , Huang Zhi Chao , Lin He Zhi
Published: January 2015

With the rapid development of communication technology and the growth of mobile devices, the development of intelligent district network will be centered on IP multimedia which integrates the whole business. Meanwhile, information overload becomes a new problem. A reasonable network structure with low cost and stable performance, providing accurate information access for intelligent district users, becomes the focus of current research. This paper proposes a network topology for mobile intelligent district based on JXTA, designing and implementing information push service platform, which not only satisfies the network demand of intelligent district, but also satisfies users with a real time, accurate and stable information access.
Design in Fire Prevention Based on Multi-Sensor and WSN
Authors: Sun Jun Ying , Qi Shu Yi
Published: January 2015

A Fire Prevention system is designed, which uses the composite fire detector, integrating four various sensors of smokescope, temperature, CO density and gas to sample the four different fire information around the field. The fusion system of fire information based on fuzzy neural network is built that is used to make fusion on the detected fire information and confirm the final case of fire.
Design of Reconfigurable Computer Software Platform
Authors: Song Shi Yao
Published: January 2015

This paper takes reconfigurable technology and platform as well as component framework thought as the theoretical support, combines with Lua script and Dynamic-link library (DLL) technology and takes VC++ as development tool to construct a universal reconfigurable computer software platform based on wxWidgets framework library. The design of this platform itself is a main frame structure, and it can realize software interface, function, arithmetic and the reconfigurable structures from other aspects by the combination of different modules. This platform has the characteristics of practicability and foresight, and it also provides a new approach and method for user to customize business component quickly, so as to realize specific needs.
Network Size Impact upon Global Balance Structure in Small Complete Network
Authors: Deng Hong Zhong , Abell Peter , Li Yong , Wu Jun , Tan Yue Jin
Published: January 2015

The balance of signed structures is defined in complete network. The local and global sign adjust rules in imbalance structure are designed under the first structural theorem. Complete linked network model is built. The convergent process of balance triangles was simulated and the results under local and global sign adjust rules were compared carefully. The impact of network size and nodes’ balance requirement on network global balance ratio are analyzed carefully.
Study on Closed-Loop Quality of Aircraft Maintenance
Authors: Shi Feng Long , Cui Jian , Gao Wan Chun , Fang Ping
Published: January 2015

Closed-loop management is a management idea and quality mode to deal with and prevent quality question. The paper researched Closed-loop quality of aircraft maintenance in Air Force Army Closed-loop work and aircraft maintenance domain, analyzed the question, kinds and means of aircraft maintenance Closed-loop quality. Finally, we give our answer based on reflected question of the Pilot.
Effect of Spark Timing on Performance of a Hydrogen Gasoline Engine
Authors: Shi Wei Bo , Yu Xiu Min , Sun Ping
Published: January 2015

Hydrogen-gasoline blends is an effective way to improving the performance of spark ignition engine at stoichiometric and lean conditions. Spark timing is one of the important parameters affect the engine performance. This paper investigated the effect of spark timing on performance of a hydrogen-gasoline engine. A four cylinder, gasoline direct injection engine was modified to be a gasoline port injection, hydrogen direct injection engine. The hydrogen energy fraction was set as 0% and 30%. For a specified hydrogen addition, the engine was operated at four excess air ratios of 0.8, 1.0, 1.2 and 1.5. Under the specified excess air ratio condition, the spark timing was varied from 4 to 19°CA before top dead center (BTDC) with an interval of 3°CA. The test result showed that the indicated mean effective pressure (IMEP) climb up and then decline with the increase of spark advance. For hydrogen-gasoline engine, the optimum spark timing for the max IMEP was retarded at a specified excess air ratio. The max thermal efficiency appeared at the optimum spark timing.
AFM Study of Magnetron Sputtered Nickel Films Coated on Cenosphere Particles
Authors: Yu Xiao Zheng
Published: January 2015

The morphologies of nanocrystalline nickel film coated on cenosphere particles using magnetron sputtering method were investigated by atomic force microscopy (AFM). The AFM results show the grain sizes and root-mean-square (RMS) roughness values of nickel films increase with the increase of sputtering power or deposition time and the nickel films growth is a three-dimensional island growth mode. The unceasingly variational angular distribution can get rid of the physical shadowing effect of the sputtering and promote a rather smooth film growth. Due to the all-around effect, the final distribution of grains shows a rather smooth morphology with low roughness.
Effect of Glycerol Carbonate as Plasticizer on P(AN-MMA) Polymer Electrolyte
Authors: Yuan Yan An
Published: January 2015

A kind of new plasticizer glycerol carbonate (GC) was synthesized. The poly (acrylonitrile-methyl methacrylate) (P(AN-MMA)) was prepared by bulk polymerization. During the polymerization, glycerol carbonate with 1M lithium perchlorate (LiClO4) was added to (P(AN-MMA)) to form the gel electrolyte. The effect of the plasticizer on the conductivity of the copolymer electrolyte was studied. The ionic conductivity was found to be 3.3 × 10-4 S·cm-1 at room temperature via AC impedance measurement.
Effect of Rejuvenator on Porous Asphalt Mixtures Containing Reclaimed Asphalt Pavement (RAP) Material
Authors: Zhao Ming Yu , Shen Fan , Qiao Li Ge , Lu Ji , Ding Qing Jun
Published: January 2015

Based on the background of continuously increasing requirements on the performance of recycle pavement materials, the effect of rejuvenator with different content (3%, 6%, 9% and 12%) and different type on recycled porous asphalt mixture was studied in this paper. The results shown that comparing with the ordinary rejuvenator which softening the aged binder effectively, the modified functional rejuvenator can also enhance the temperature stability and deformation resistance capacity of aged asphalt. In addition, the recycled porous asphalt mixture with modified functional rejuvenator has more excellent high temperature stability, water stability and fatigue performance. The result has great significance for the development of pavement recycling technology.
Effect of Sulfur Dioxide Treatment on Storage Quality of Red Grape
Authors: Zhao Peng Yu , Gao Li , Li Xi Hong , Zhang Lu , Li Feng , Hu Jun , Ma Hong Yuan , Li Yao Yao
Published: January 2015

The aim of this study was to determine the efficacy of several alternative postharvest treatments to sulfur dioxide (SO2) in storage quality during cold storage of red grape.The three kinds of treatment were 0μL/L (CK),3000μL/L(TR1),5000μL/L(TR2).The results showed that SO2 damagement effected on physiological metabolic and physiological quality of grapes significantly.It can inhibit the rise in pH of grapes,harm the integrity of cell membranes,increase conductivity and malondialdehyde content and stimulate the activity of polyphenol oxidase. But right amont of SO2 had a positive effect on strage and preservation of grape.
Effects of Coagulation-Bath Temperature on the Formation Process of PVDF-g-PNIPAAm/poly(NIPAAm-co-AAc-L-Phe) Membrane
Authors: Liang Xiao Tong , Gu Meng Xin , Li Jin Ling , Wang Xue , Zhao Yi Ping , Chen Li
Published: January 2015

In this work, poly (vinylidene fluoride)-graft-poly (N-isopropylacrylamide) (PVDF-g-PNIPAAm) thermo-sensitive polymer and poly (NIPAAm-co-AAc-L-Phe) chiral micro-gels were synthesized firstly. A chiral thermo-sensitive membrane for phenylalanine separation of the racemic mixture was prepared by phase inversion method with the blend of poly (NIPAAm-co-AAc-L-Phe) and PVDF-g-PNIPAAm. The blend membrane formation mechanism of the casting solutions in water bath thermodynamics at different temperatures and the process of membrane formation were investigated via cloud point determination and ultrasonic time-domain reflectometry (UTDR). The results showed that the inversion between hydrophilicity and hydrophobicity of PNIPAAm contributed to the membrane formation process. From the time needed in membrane forming recorded by ultrasonic signal spectra, it can be found that the speed for solidification was increased when the coagulation-bath temperature was higher than 30°C.
Effects of Soldering Temperature on IMCs Formation between Sn-0.7Cu Solder and Cu Substrate
Authors: Min Zhi Xian , Hu Xiao Wu , Qiu Ying Xia
Published: January 2015

The interfacial reaction and growth of intermetallic compounds (IMCs) between the eutectic Sn-0.7 wt.% Cu solder and Cu substrate during soldering process were investigated experimentally. The Sn-0.7Cu/Cu couples were fabricated with soldering temperature varied at four levels of 300, 340 and 360°C. Microstructural analysis is conducted to analyze the IMCs thickness and morphology using scanning electron microscope. Two intermetallic phases were observed during soldering at the interface: η-phase (Cu6Sn5) and ε-phase (Cu3Sn) IMC layers, except for the solder joints which were fabricated at low temperature. The thickness of the η and ε IMC phases increase with increasing the soldering temperature. It’s found that the increase in total IMC layer thickness obeys a linear relationship with soldering temperature. And the relationship between X and T was given as X = 0.0866×T – 22.5 by means of linear fitting method.
Fabrication and Characterization of Sisal Cellulose Nanowhiskers
Authors: Fan Xin , Chen Zhong Sheng , Yang Zhe Wei
Published: January 2015

There is growing interest in cellulose nanowhiskers from renewable sources for several industrial applications. In this work, sisal cellulose nanowhiskers (SCNW) are produced from sisal fiber by the combinations of acid hydrolysis and dialysis treatment. The structure of SCNW is characterized by Fourier transform infrared spectroscopy (FTIR), the morphology of SCNW is observed using field emission scanning electron microscopy (FESEM), and the thermal properties of SCNW is investigated by differential thermogravimetric analysis (DTG). The FTIR study displays that the chemical structures of SCNW are consistent with those of cellulose, indicating the removal of most of hemicelluloses during the acid hydrolysis process. The DTG result suggests the initial decomposition temperature of SCNW is 280 °C and the terminal decomposition temperature is 356 °C, the residual rate is 10% or so, indicating favorable thermal performance. The SEM results show that the sisal cellulose microcrystals exhibit an average length of 50 μm and a diameter of 5~10 μm, and SCNW displays a diameter of 5~60 nm and a length of several micrometers, revealing that the size of SCNW is much smaller than that of cellulose microcrystal. All above results illustrate that SCNW has a great promise for many potential applications, such as pharmaceutical, liquid filtration, catalysts, bio-nanocomposites, and tissue engineering scaffolds.
Influence of the Coagulation-Bath Temperature on Membrane Formation Mechanism and Properties of PVDF/TA-ATP Hybrid Membrane
Authors: Shi Yue Rong , Zhang Gui Fang , Liu Xing Tian , Tian Xue Tao , Zhao Yi Ping , Chen Li
Published: January 2015

In this study, poly (vinylidene fluoride) (PVDF) hybrid membranes were prepared from polymeric blend of PVDF/tannic acid (TA)-Attapulgite (ATP)/PEG system via phase inversion induced by immersion precipitation in water coagulation bath. The membrane formation mechanism of PVDF/TA-ATP/PEG casting solutions in water bath thermodynamics at different temperatures and the process of membrane formation were investigated via cloud point determination and ultrasonic time-domain reflectometry (UTDR). The structures and properties of the membrane were characterized by scanning electron microscopy (SEM), and water permeation experiment, respectively. It was found that the rate of precipitation controlled by the Coagulation-Bath thermodynamics. With the coagulation temperature increasing, the gelation line was moved to non-solvent axis and the pure water flux were decreased.
Mechanism of DBDS and Irgamet 39 on the Corrosion and Suppression of Copper in Transformers
Authors: Zhao Yao Hong , Qian Yi Hua
Published: January 2015

Copper testing strips are wrapped with three layers of Kraft paper and carried out aging experiment in corrosive sulfur contaminated insulating oil at 150 °C for 10 days. It is found that the copper sulfide is first formed on the surface of copper and tainted to the inner side of the insulation paper. Then the copper sulfide permeates through the paper and damages the dielectric property. In addition, flaking mechanism on the transformer failure is proposed. On the basis of this observation, different concentration of Irgamet 39 used as passivator is treated with the transformer oil containing corrosive sulfur, investigating the acidity, dielectric loss and corrosion to seek optimized condition. At last, long term stability of Irgamet 39 is studied by means of 208 transformers in service.
Photocatalytic Degradation of Methyl Orange by TiO2/Schorl Photocatalyst: Kinetics and Thermodynamics
Authors: Xu Huan Yan , Li Xue , Li Yan , Li Ping , Liu Wei Chao
Published: January 2015

An active dye, Methyl Orange (MO) was employed as the target pollutant to evaluate the photocatalytic activity of TiO2/schorl composite and the kinetics and thermodynamics of this process was emphasized in this work. Langmuir–Hinshelwood kinetic model was employed for the kinetic studies and the results revealed that the process of MO photocatalytic discoloration by TiO2/schorl composite followed one order reaction kinetic equation under different conditions. The reaction rate constant (k) increased with initial MO concentration decreasing. When the catalyst dosage or solution pH increased,kvalues increased and then decreased. The possible reasons for these phenomena were discussed. Finally, the thermodynamic parameters ΔG, ΔH, ΔSwere obtained by the classical Van't Hoff equation.
Research of Geosynthetics in Seepage Prevention of Rock-Fill Dam
Authors: Gao Ying
Published: January 2015

With the increasing of its products, Geosynthetics materials is a very promising new type of dam materials, which is the more and more widely used. It not only has seepage control and drainage, filtration, isolation, protection and other functions, especially in the rock-fill dam seepage control applications, but also played a save the effect of project investment, shorten the construction period, which is worth popularizing in rock-fill dam engineering widespread use.
Research on Synthesis and Corrosion Inhibitory Performance of Diisopropylamine Methyl Urea
Authors: Zhou Fu Rong , Zhang Hu
Published: January 2015

Diisopropylamine methyl urea (DMU) was synthesized by raw materials of diisopropylamine, paraformaldehyde and urea in acid media, the effect of synthesis conditions including the dosage of hydrochloric acid, the mole ratio of the materials and the reaction temperature on the product yield were studied. A corrosion inhibitor formula that contained DMU, cyclohexylamine, ethanolamine and propiolic alcohol were designed, and static weight-loss method, Tafel polarization curve method were used to evaluate the corrosion inhibitory performance. The results showed that the best synthetic conditions for DMU were the mole ratio of diisopropylamine, paraformaldehyde and urea, 1:1.2:1; reaction temperature, 80°C; the mole ratio of hydrochloric acid and diisopropylamine 1.2:1. The product yield in this condition was 90.23%, the melting point was 230°C. The results of static weight-loss method revealed that DMU, cyclohexylamine, ethanolamine and propiolic alcohol had great synergy effect, the inhibition efficiency of gas phase static weight-loss method reached to 97.61%, and attained 85.20% in liquid phase static weight-loss method. The results of Tafel polarization curve method indicated that the corrosion inhibitor formula contained DMU had a good inhibitory effect to the cathode electrochemical corrosion process of A3 carbon steel.
Study on the Antibacterial Effect of Silver Nanoparticles on the Plant Pathogenic Fungus Exserohilum turcicum Pass
Authors: Qiu Lu , Yang Hai Han , Wang Li Ji , Fan Shu Guo , Gao Jian Hui
Published: January 2015

With five strains of plant pathogenic fungusExserohilumturcicumPass. as test material, carbendazim and chlorothalonil as bacteriostats for compare, the bacteriostasis of silver nanoparticles on the growth of mycelium, the spore germination, as well as the inhibition zone and conductivity was studied. The results show: the bacteriostatic effect of silver nanoparticles is all significantly better than blank control, indicating that silver nanoparticles has better bacteriostatic effect onE.turcicumPass. And there is an interspecific difference for silver nanoparticles’s bacteriostatic effect on the five strains, the bacteriostatic effect of the strain 85-3 is better than 85-1, 85-2, 85-4 and H15. In the comparison among silver nanoparticles, carbendazim and chlorothalonil, the latter two have no significant difference in their bacteriostatic effect, but they are better than silver nanoparticles. Silver nanoparticles’s bacteriostatic effect is achieved by changing the permeability of the cytomembrane.
Study on the Laser Alloy Cladding for Re-Manufacturing of the Surface of 40Cr
Authors: Zhang Yan Li
Published: January 2015

The laser alloy cladding technology is used to treat the surface of 40Cr, and the two alloy powders are used separately. The process parameters are different, such as laser power, feed rate and scanning speed etc. The microstructure and hardness of cladding layers are analyzed by using scanning electron microscope and hardness tester. Generally, the surface quality is improved apparently. Under the similar laser power and powder quantity, the thickness of Ni60 cladding layer is much larger than Fe60. The hardness of Ni60 layer and Fe60 layer are all higher than substrate. There are more cracks in Ni60 layer than in Fe60 layer. The parameters of sample No.1 is optimal.
Experimental Research of HCCI Combustion Based on Late Exhaust Duct EGR Strategy
Authors: Gao Yin Han , Jiang Yu Chao , Cheng Peng , Chi Jun Cheng , Wang You Kun
Published: January 2015

Late exhaust duct EGR strategy is one of internal EGR strategies to realize HCCI combustion. Based on a single-cylinder test engine system equipped with an electronic controlled hydraulic variable valve train system, the effects of valve phases in this strategy were studied. The results show that at engine speed 1000r/min, equivalent air-fuel ratio λ= 1, when the IVO phase is put off, EGR ratio increases gradually, CA10 and CA50 are postponed and combustion duration becomes longer. At the same time, peak pressure and maximum pressure rise rate have a tendency to descend. When the SEVO phase is postponed, the parameters of the test engine will also be affected. However, when the phase is postponed above the critical point, the parameters have a backward trend. The property of HCCI combustion is not sensitive to SEVO phase.
A Study on the Inner Surface Pressure Distribution of Fluid in Ninety Degree Elbow Pipe
Authors: Lu Xiao Yang , Zhu Hong Liang , Lu Xiao Li , Liu Jin Ming , Zhou Yong , Li Xin Guang
Published: January 2015

On the premise of the simulation data for the inner fuild passing the elbow pipe by means of software named FLUENT and dimensional analysis, the formula modle of inner surface pressure for elbow pipes came up by analyzing the relationships among the inner surface pressure P ,the fluid outlet pressure P0 ,axial angle α, circular angle β and the degree of curvature k; Depending on the inner surface pressure data simulated under 150 kinds of conditions, the pressure formula was fitted by means of 1stOpt software; The verification results show that the calculated value by the formula matched with the value of simulation by FLUENT software very well, the maximum relative error was 0.004%, and the research conclusion layed the theoretical groundwork for the design of the high pressure and high velocity elbow.
The Application and Study of CLIPS in Fault Diagnosis of Self-Propelled Gun Servo System
Authors: Gong Chang Hong , Huang Lin Hao , Peng Lei
Published: January 2015

This paper briefly recommends the conception and syntax construction of the expert system language – CLIPS. Aim at fault happening mode, the paper build up fault analysis model of certain self-propelled gun servo system with CLIPS, compiled knowledge base and reasoning engine, realized embedded programming of CLIPS, and illuminated the application of CLIPS in fault diagnosis of self-propelled gun servo system.
An Edge Detection Method Based on Adaptive Differential Operator
Authors: Gong Rong Fen , Chu Mao Xiang
Published: January 2015

An edge detection method based on adaptive differential operator is proposed in this paper. Firstly, standard local edge models are built. And these edge models are described with four-bit-binary code (FBBC) which is obtained from weighted mean values in four directions. Then, based on weighted gray values in four directions, different differential operator templates are defined. And FBBC is used to build the matching between differential operator templates and edge models. Experiments show that this edge detection method with adaptive differential operator can smooth noise and has satisfactory edge detection result.
Model Based Protocol Conformance Test Study
Authors: Deng Guo Li , He Tao , Wei Yong , Li Hua Zhong , Xu Shou Xiang , Zhang De Fen
Published: January 2015

This paper puts forwards the problems during the process of conformance test based on the enhanced finite state machine and looks for the description method of the state machine for protocol. Through the analysis of model based on test principle, the protocol conformance testing will be applied based on the enhanced finite state machine test. Through comparing with the traditional test method, study how to design model for protocol, and through executing model produced test, verify the advantage and applicability of model based testing method by testing cases.
Application Research of Intelligent Monitoring System Based on Abnormal Events
Authors: Wu Shuo Mei , Song Jian Wei , Liu Xu Ning
Published: January 2015

In order to meet the needs of the construction information industry base, enhance their ability to serve the community, and improve scientific research projects of market-oriented level, then develop family-oriented and school-based intelligent monitoring software system, the development of new products in the smart camera and mobile video surveillance and development of new technologies are developed. It is considered that the electronic information industry needs to develop intelligent monitoring technology industry, the video compression technology and the use of mobile and existing wireless networks are made, such as efforts are used to complete the smart cameras and mobile video surveillance system development, so the development of application research has implemented the front of video surveillance intelligence information collection, transmission of video signals in real time, real-time wireless video signal transmission and other tasks.
Comparison and Analysis on Environmental Function Matrix Computing in Separation of Guidance Instrument Systematic Errors
Authors: Dai Xiao Wei , Xie Yu Zhen
Published: January 2015

Environmental function matrix computing can provide aircraft data support for guidance instrument systematic error compensation to promote the precision. There were two ways to calculate the environmental function matrix, telemetry data direct computing method and telemetry data iterative computing method. A new iterative computing method with tracing data was put forward. The three methods were compared by using simulated data to do the experiment .It could be concluded that the precision of the tracing data iterative computing method was the best of three methods.
Foot Pressure Intelligent Analysis System
Authors: Wang Min Chao , Zheng Lei Na , Yang Hao Dong , Pan Tie Jun
Published: January 2015

Human feet are designed by nature to walk on soft soil and grass, but more and more modernization road becomes smooth and hard, leading to only some part of foot arches to bear all the weight of the body. This continues a long-term will lead to physical disease. The paper combines optical design, 3D image processing technology, mechanical design, mold design, and computer network technology to build system from the foot pressure test to the medical diagnosis and disease degree determination, and then to customer tailored insoles, tracking service, curative effect evaluation.
Research on the Numerical Simulation of Internal Flow Field and Energy Efficiency of Ventilator
Authors: Tong Zhu Jue , Wang Xiao Ling , Zhang Kai , Wu Shu Xing
Published: January 2015

In the present study, the effects of ventilator geometries on the its performance were numerically simulated using the computational fluid dynamics (CFD) program. For a certain type ventilator, three-dimensional inner flow field was derived firstly, such as local flow field at the meridional and rotary plane of ventilator, the gap flow between the impeller and air outlet, and the secondary flows in impeller channel were studied in detail, and some suggestions are given to improve the profile of velocity. The above results would be helpful to the optimization and modification of ventilator.
Proposing a Hybrid Index that Combines between Meteorological and Topographic Parameters to Predict Forest Fires
Authors: Karouni Ali , Daya Bassam , Chauvet Pierre
Published: January 2015

All over the world, statistics show that forest fires rate has increased in the recent decades despite the numerous studies and various indices developed to predict high risk of fire occurrence. In this paper, a new proposal for a fire detection index is presented that combines between meteorological and topographic parameters. The parameters of slope, aspect and elevation are introduced and their impact on fire behavior (ignition, spread & intensity) is described. The method of calculation of the new index is based on simple logic gates. A comparison is then held between the proposed index and seven commonly used existing indices. The accuracy percentages are calculated which reveals the distinction of the new combination over the present models, taking the Lebanese data into study. In order to verify the efficiency of our proposed hybrid index, several informative experiments are shown.
Character Analysis and Application of Resistance Sensor on Sizing Machine
Authors: Tong Yun
Published: January 2015

The slashing machine is key equipment in textile process, the temperature and moisture regain are crucial technique parameters in slashing or sizing process. The electronic sensor play a key role in intelligence control of technical parameters in term of temperature and moisture regain. The principle, characteristic analysis and application of resistance sensor known as thermistor and humidity sensor have been discussed in this paper.
Design of a Laser Navigation System for Substation Inspection Robot Based on Map Matching
Authors: Xiao Peng , Yu Li Xin , Chen Shao Hong , Wang Hai Peng , Wang Bin Hai
Published: January 2015

Aimed at the deficiency of the magnetic guide and RFID parking system used by substation inspection robot now, a laser navigation system is designed, and the system structure, the method of map building and positioning are all introduced. The system performance is tested in a 500kV substation, and the result show that the repetitive precision of navigation system is precise enough to help the robot fulfill inspection tasks.
A Hybrid Differential Flatness and Sliding Modes Controller for Dynamical Structural Testing on Lower Limp Prostheses
Authors: Mauledoux Mauricio M. , Caldas Oscar I. , Avilés Oscar F.S. , Mejía-Ruda Edilberto , Jiménez Sebastián
Published: January 2015

The standard ISO 10328 specifies the procedure for structural tests on lower limb prosthetic devices, as a method for quality control. Having the standard as reference, a machine is designed and implemented to follow the test routine, which if succeeded, shows the quality concept for the devices tested. Furthermore, it is shown the controller design process, which manage the application of a sinusoid force with specified amplitude, frequency and offset, in order to realize the dynamic test, by means of a double effect cylinder and proportional valves for pressure and flow.The dynamic model was calculated through a parametric identification technique in a pre-stabilized closed loop. Later, a hybrid control strategy was set using the differential flatness concept and a sliding modes controller, so that both identified model and real system could be properly controlled.
Research on the Stiffness Modeling of the High Precision Positioning Platform under the Thermal Model
Authors: Li Jian , Liu Ji Zhu , Zhang Wen Wen , Chen Li Guo , Pan Ming Qiang , Chen Tao , Wang Yang Jun , Sun Li Ning
Published: January 2015

The heat of the positioning platform is mainly caused by conduction of each functional unit, when it affected by the influence of internal and external heat source at work, the temperature of units would change, and the condition would make the platform component stiffness change, then lead to positioning platform dynamic characteristics change. In this paper, the finite method analysis platform dynamic connection stiffness with the regularity of temperature change, and by using the grey correlation method to optimize the platform stiffness influence of the four largest temperature sampling point, through the neural network modeling method to establish high precision positioning platform stiffness model, provide theory for the research on platform of dynamic characteristics of the model.
Evaluation of Dynamic Load-Carrying Capacity for Free-Floating Space Manipulators
Authors: Liu Yong , Jia Qing Xuan , Chen Gang , Sun Han Xu , Peng Jun Jie
Published: January 2015

Two kinds of dynamic load-carrying capacity (DLCC) evaluation methods for free-floating space manipulators (FFSM) in two typical on-orbit operating missions are proposed in this paper. DLCC evaluation is transformed into nonlinear programming problem (NPP) by introducing load-carrying coefficient to measure DLCC: in point-to-point task, penalty function method is adopted to approach the boundary of feasible region rapidly, then DLCC can be obtained through following iterations; in trajectory tracking task, NPP is solved by using multiple one-dimensional search, the dynamic load-carrying coefficient in discontinuous feasible region can be quickly solved through adjusting the searching boundary constantly. The effectiveness of the mentioned methods is verified by simulations.
Research on Strategy Intelligent Control of Traffic Signal
Authors: Zhang Yan Min , Luo Hai Bing , Wang Jian Qiang
Published: January 2015

In order to make the traffic flow smoothly through the intersection, to minimize the delay time, must ensure that the control decision of the traffic signal is real-time and accuracy. Aiming at the existing problems of the traditional timing control method, analysis of traffic signal control parameters, performance indicators, put forward the fuzzy inference is applied to the traffic signal control system, puts forward an intelligent traffic signal control system based on fuzzy control; the vehicle queue length, inlet flow rate, green extension as the control parameters and simulation the results show that the proposed control method can effectively improve the traffic congestion, improve the vehicle capacity.
Autonomous Car for Mining 1° ProtoType “ACM1PT”
Authors: Mauledoux Mauricio , Hernández Juan C.M. , Avilés Oscar F.S. , Ramirez G. Hoffman F.
Published: January 2015

The project aims to design and build a robotic platform, capable of uploading tools for drilling exploration processes in unstructured environments. With the characteristic of being maneuvered remotely through a wireless communication protocol and a support system to allow new routes autonomously, without human intervention. During the last 4 years the research group DAVINCI has acquired knowledge in the search for information and has developed three mobile remotely controlled for a specific purpose, to neutralize the explosives and manipulate objects platforms. The information held for the development of mobile robots can be extrapolated to other functions, can be applied to other work tasks can be mining, agriculture and exploration. For the particular case the project to develop a robot that I carried out in mining support tasks remotely by tele-operation and support of autonomous system is presented.
Application of Morphological Filtering Technology in Underwater Acoustic Signal Preprocessing
Authors: Deng Lei Lei
Published: January 2015

In order to extract useful information of underwater acoustic signals from noise, preprocessing steps are unavoidable. In view of trend and transient pulse interference exited in the original data inevitability, morphological filter method is applied and analyzed in this paper. Data processing results show that the morphological filter method is superior to the traditional filter method.
An Algorithm for Red Tides Species’ Identification Based on Spectral Characteristics and Wavelet Analysis
Authors: Zhang Juan , Wang Bing , Yang He Meng
Published: January 2015

Hyperspectral remote sensing technology provides a new way to identify red tides types, but many existing methods can’t take full advantage of the spectral reflectance characteristics and often yield false recognitions. So, on the premise of perfect spectral curves library of red tides to be referred, this paper proposes an algorithm based on spectral reflectance characteristics and wavelet decomposition for red tides recognition. The algorithm identify the red tide species by applying wavelet analysis to a certain wavelength range limited by the spectral features. To compare and prove the effect of this algorithm, do simulate experiments with both the proposed method and the traditional SAM method. The results show that, compared with SAM method, the algorithm put forward in this paper can better indentify the species of red tides.
A Real Time Method to Detect Vehicle for Collision Avoidance Applications
Authors: Yang Fei Fei , Zhang Hai , Li Xiang Hong
Published: January 2015

In this paper, we propose a real time method to detect vehicles on road by using a vehicle mounted monocular camera. Based on lane detection design, low time cost and high accuracy vehicle detecting and tracking algorithm is achieved. Robust and fast lane detection has been achieved using Hough transform in combination with a line merging method. The lane data are used for effective vehicle hypothesis generation. A subsequent validation, based on the area ratio of hypothesis vehicle, is used to eliminate false positives. Further, a data fusion mechanism is proposed to incorporate temporal information for stably updating vehicle detection results over time. Experimental results show that, without specific hardware and software optimizations, our method is able to detect vehicles on road with low false alarm rate at real time speeds of 30 frames per second.
Ionic Conduction Mechanism of Solid Biodegradable Polymer Electrolytes Based Carboxymethyl Cellulose Doped Ammonium Thiocyanate
Authors: Isa M.I.N. , Noor Noor Azniza Mohd
Published: January 2015

A conducting solid biodegradable polymer electrolytes based carboxymethyl cellulose (CMC) doped ammonium thiocyanate (NH4SCN) system with concentration in the range 0 – 25 wt.% of NH4SCN have been prepared via solution casting method. The impedance study of CMC-NH4SCN system was measured via Electrical Impedance Spectroscopy (EIS) in the temperature range 303 K – 353 K. The highest ionic conductivity at room temperature (303 K) is 6.48 x 10-5Scm-1for sample containing 25 wt.% NH4SCN. The temperature dependence of CMC-NH4SCN system was found to obey the Arrhenius behaviour where the ionic conductivity increases with increase of temperature. Dielectric data were analyzed using complex permittivity, Ɛifor sample with the highest ionic conductivity at various temperatures and found was non Debye behavior. The conduction mechanism of the charge carrier of CMC-NH4SCN system can be presented by quantum mechanical tunneling (QMT) model.
Hydrothermal Synthesis of Porous Graphene Nanosheets for Supercapacitors
Authors: Liu Zi Long , Xia Fu Jun , Xue Qing Zhong , Du Yong Gang , Guo Qi Kai
Published: January 2015

Porous graphene has been easily synthesized by hydrothermal treating reduced graphene oxide in alkaline solution, and the porous structure was confirmed by transmission electron microscope. When used as supercapacitor electrode, porous graphene holds a specific capacitance of 88 F g-1 at an ultra-high current density of 50 A g-1, an increase of about 83% compared with that for the pristine graphene sheets. The results demonstrate that porous graphene opens a new and short way for ion transportation. Furthermore our findings provide a novel strategy to fabricate porous graphene and the process is simple, low-cost and environmentally friendly.