bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence Analysis of Benzene-Ethanol Extraction Contents on Tree Species Flammability
Authors: Li Yan Qin , Hu Hai Qing , Sun Long
Published: January 2011

In this paper, The benzene-ethanol extraction contents of the leaves, sprig and bark of eight different species on the Maoer Mountain region, the similarities and differences about the extraction contents of the different parts of the same species and the different tree species were studied, and attempted to analyze the reasons for the differences, in order to provide a reference for the fire tree species selection and forest fire prevention. The results showed that the extraction contents of leaves, sprig and bark parts of the same species did not differ greatly, the extraction contents of the different species showed significant difference, Korean Pine had the highest extraction content, Mandchur Ash and Manchurian Walnut Maxim had the lower extraction content, the variation range of the extraction contents was 8.01%~20.69%, and the extraction contents of the conifer species were significantly higher than the broad-leaved tree species. As far as benzene-ethanol extraction is concerned, Korean Pine was most burnt. Mandchur Ash and Manchurian Walnut Maxim was relative fire-retardant. And the conifers was more relatively easy to burn than the broad-leaved trees. The fire-retardant tree species could be considered as the fire protection tree species, such as, Mandchur Ash and Manchurian Walnut Maxim.
Mediator-Based Decolorization of Recalcitrant Dyes with Laccase from Bacillus amyloliquefaciens LS01
Authors: Lu Lei , Zhao Min , Li De Bin , Zhao Li Yan , Du Mei Hui , Wang Tian Nv , Li Tai Lun , Pan Jun Bo
Published: January 2011

The spore laccase of Bacillus amyloliquefaciens LS01 was evaluated for its ability in decolorization of different synthetic dyes. The decolorization process was not efficient by the laccase alone. The addition of mediators could remarkably improve the efficiency of dye decolorization. Remazol Brilliant Blue R and reactive black 5 were resistant to decolorization for most mediators. Acetosyringone was proved to be the best mediator for the spore laccase, and a decolorization of 63−82% was achieved for all the tested dyes in the presence of acetosyringone. The results indicate that the spore laccase-mediator system could be used for the treatment of industrial dye effluents.
The Expression In Vitro and Application on Cellulose Degradation of LeEXP2
Authors: Ma Yuan Yuan , Wang Xin , Wang Han Ze , Zhang Kun , Zhang Min Hua
Published: January 2011

Cellulosic ethanol has become a hotspot in recent years. However, its crystal structure makes the efficiency of cellulosic degradation by cellulase very low. Traditional ways to disrupt of connection between microfiber consumes a deal of energy and would pollute the environment as well. Plant expansin is known to loosen the plant cell wall, and might provide a synergistic effect on the activities of cellulase. Whereas, the expression level of expansin in plants has been a limit to the functional study and application in cellulose degradation. Thus, it is essential to screen expansin proteins for biomass deconstruction and express them effectively in vitro. Therefore, we cloned expansin gene LeEXP2 from tomato leaves and obtained recombinant Pichia yeast strains integrated with LeEXP2 gene. When incubated in the same culture condition, recombinant strains can secrete the LeEXP2 protein to extracellular medium, while wild-type strain cannot. Preliminary cellulose degradation experiment confirmed that the secreted protein had synergistic the effect of cellulose hydrolysis by cellulase. The experiments of extension strength of filter-paper strips shows that LeEXP2 has a texture-loosening effect on the filter paper, which might make cellulase prone to access cellulose. Above data suggests that LeEXP2 could be expressed effectively in vitro and might become a kind of potential biochemical agent applied in cellulosic biomass conversion for bioenergy production.
An Etrophication Model for Lake Based on Maximum Flux Principle for Waihai of Dianchi Lake
Authors: Wang Hong Mei , Mao Guo Zhu , Zhang Shu , Du Hui Bin , Dai Wei , Chai Li He
Published: January 2011

The aquatic ecosystem of lake is a complex open systems, taking account of the shortcomings of available eutrophication models for water quality, this study based on the principles of maximum flux selects Waihai as the object, we apply complex systems analysis to construct eutropication model which is suitable for local conditions and select a larger time scale and control parameters to simulate the eutrophication status to find out the main factors and to put forward reasonable proposals for giving out optimal control techniques. This model can be expanded in time scale, spatial scale and the number of parameters, while the difficulty of calculation and analysis will not be increased.
Bioaugmentation Treatment of Bromoamine Acid Wastewater with Sphingomonas Sp. FL
Authors: Fan Li
Published: January 2011

One effective bromoamine acid (BAA) degrading strain FL was isolated previously with the ability to use BAA as the sole source of carbon and energy. The strain FL was applied in a combined process of microelectrolysis (ME) and biological aerated filter (BAF) to treat the bromoamine acid wastewater, and the treatment efficiency was investigated. It was shown that when the influent CODcr was lower than 1000 mg L-1, and the total hydrolytic retention time (HRT) was 37.7 h, the removal rate of chrominance and CODcr could reach 95.3% and 77.3% respectively. Most of the chrominance was removed by the ME treatment, while the removal of CODcr is mostly owned to the BAF treatment. After long-term contact with the BAA wastewater, the strain FL became one of the predominent species in BAF. When the system was subjected to hydraulic loading shock, the strain FL ensured the efficient removal of chrominance and BAA.
Screening of a Flocculant-Producing Strain and Optimal Conditions for Production of Bioflocculant
Authors: Wang Jia Hong , Wei Jun Fei , Ma Hong Rui
Published: January 2011

A bioflocculant-producing strain M-3 with high flocculating activity was isolated from soil by conventional panel lineation and dilution-plate methods. It was preliminarily identified as Aspergillus based on its morphological and physiological characteristics of colony. The single factor experiments were conducted to optimize cultivating factors affecting flocculating activity, the optimal culture conditions were found to be as follows: glucose 10 g/L, glutamate 2 g/L, cultivating time 36 h, cultivating temperature 37 oC, shaking speed 120 r/min, initial pH 10. The strain could produce high effective flocculants with flocculating activity of 98.3% for kaolin clay suspension, which afforded high possibility of its practical use.
Effect of MLSS on the Denitrifying Dephosphorization Process
Authors: Zhang Lan He , Liu Hong Lei , Liu Qiang , Zhang Hai Feng
Published: January 2011

In order to investigate the effect of MLSS on the denitrifying dephosphorization process, a lab experiment was carried out by using an anaerobic/anoxic sequencing batch reactor (A2SBR) for a long time. The results showed that when MLSS was maintained at 2500-3500mg/L, removal efficiency of PO43--P was kept high value and it was higher than 90%.
Designing an Economical Membrane Process to Concentrate the Effluent from Alkaline Peroxide Mechanical Pulping Plants
Authors: Zhang Yong , Cao Chun Yu , Feng Wen Ying , Xu Ming , Lv Wei Jun
Published: January 2011

Using a multi-effect evaporation system to concentrate the effluent from alkaline peroxide mechanical pulping (APMP) plants is known to require a high energy consumption. In order to improve the situation, a polyethersulfone (PES) membrane was used to concentrate the effluent of APMP plants beforehand. An orthogonal experimental design was applied and a mathematical model was established to optimize the filtration parameters. An estimation of potential energy and water savings from this new concentration process was developed. The optimal filtration conditions obtained were: molecular weight cut-off at 10,000 Dalton, trans-membrane pressure at 3 bar, feed temperature at 50oC, cross-flow velocity at 420 rpm, and volume reduction factor at 0.93. The average permeate flux under these conditions was 45.31 l/m2.h. The total solids content was increased from 14.74 g/l in the feed to 95.04 g/l in the concentrate. The permeate had low total solid contents of 8.75 g/l, Chemical Oxygen Demand of 6696 mg/l, and Biochemical Oxygen Demand of 4383 mg/l. Such qualities would allow the permeate to be reused in the alkaline peroxide mechanical pulping process. With this new concentration process, about 4840.6 kWh energy can be saved and 23.3 m3 effluent discharge can be reduced for each ton of pulp produced.
Study on Decolorization of Wastewater Containing Acid Orange II by Adsorption on Expanded Graphite
Authors: Yue Jun Jie , Jin Xing Long , Jin Zhao Hui
Published: January 2011

In this paper, the adsorption and decolorization capability of expanded graphite (EG) on the simulated wastewater containing Acid Orange Ⅱwere studied. The experimental results show that the initial concentration of wastewater, the dosage of EG, the pH value and the temperature all have greater effects on the decolorization ratio of simulated Acid Orange Ⅱ wastewater. The dye- wastewater containing lower concentration(＜150 mg/L) of Acid Orange Ⅱ is more suitable to be treated by EG, and approximately 100 mg/L is the preferable concentration. The decolorization ratio increases with the increment of the dosage of EG and the temperature level, but the growth rate obviously decreases at the higher initial concentration. All the decolorization ratios under strong acidic (pH<5) and alkalic (pH>11) conditions are higher than that at the range of 5-11 pH values, the highest value even reaches over 94%, while the decolorization ratio under the latter conditions are only between 75% and 85%.
Karyotype Analysis and Giema C-Banding Patterns in Thinopyron elongatum
Authors: Min Qu
Published: January 2011

Giemsa C-banding patterns and karyotype of chromosomes were analyzed in the root-tip cells of diploid Thinopyron elongatum. A modified seed germinating method was developed for obtaining the C-banding patterns in diploid Thinopyron elonggatum. The results of The C-banding analysis showed the significant differences among the seven pairs of chromosomes in diploid Thinopyron elonggatum. The intensive C-bands were stained steadily on the intercalary, terminal, subcentromeric and centromeric regions of Chromosomes. We found that there are three pairs of metacentric chromosomes and four pairs of submetacentric chromosomes in diploid Thinopyron elonggatum. The karyotype formula is 2n=2x=14=6m+8sm. Present results provided a basic cytological data and will be useful for the further studies in Thinopyron elongatum.
Correlation Analysis between Measured Values of the Texture Analyzer and Scale Values of Sensory Evaluation for Food Hardness
Authors: Li Xiao Mei
Published: January 2011

In order to crystallize hardness features of common foods, the TA-XT2i texture analyzer and HDP/BS blade-type probes are applied to measure the hardness of 16 kinds of common foods. The samples are divided into groups according to proximity and deviation of the measured values, and consequently, the evaluators carry out sensory evaluation adopting sequential method and scale method in succession. After that, correlation analysis is been analyzed between measured values of the texture analyzer and scale values of sensory evaluation, correlation diagrams are drawn and regression equations are established to analyze. The results demonstrate that a close linear correlation exists between measured values and scale values. It is also concluded that reliability of scale values decreases with the growing quantity of tested samples, and it’s more difficult to scale when texture and property of the samples tend to have minor difference, therefore, scale values become less reliable.
Existing Problem and Solution of Emission Trading in China
Authors: Bei Er , Li Jun Sheng , Zuo Jin Long
Published: January 2011

Due to the environmental deterioration, environmental resources have become one of the limited resources for the development of society and economics. How to make the best use of the finite pollutant emission index has become the focus of modern government and enterprises, while emission trading as an environmental financial policy which can accelerate the development of economics, and at the same time control the total amount of pollution, has gained widespread application. This article proposes the new viewpoint of paid distribution and point out the existing problem of emission trading and the solution to it in today’s China.
The Clustering Algorithm Study of Gene Expression Data
Authors: He Rui , Lin Chun Mei
Published: January 2011

This paper proposes an evolutionary self-organized clustering method of genes based on undirected graph expression. In this method, we use the vertices of the graph to represent genes, and regard the weight between two vertices as similarity measurement of two genes. Thus, the similarities among genes can be extracted according to the space feature of graph with immune evolutionary method. To demonstrate the effectiveness of the proposed method, the method is tested on yeast cell cycle expression dataset; the results suggest that this method is capable of clustering genes.
Isolation and Characterization of one Strain of Phosphate-Solubilizing Bacterium
Authors: Zhao Hui , Yan Hua Xiao , Liu Fu Mei , Qin Song
Published: January 2011

16 strains of microorganisms were screened from garden soils which contain large amounts of insoluble phosphate rock, respectively, named HPP1-HPP16. HPP16 was selected to be further studied by reason of its high-performance phosphate-solubilizing ability. After a series of experiments about physiological-biochemical identification and 16SrDNA molecular biological identification, HPP16 had been identified as one strain of Enterobacter asburiae. After cultivation of HPP16 in liquid inorganic phosphorus medium, its activity achieved to an accumulations of soluble phosphate up to 1212.32 mg/L. The results showed that HPP16 has a great potential and a good prospect in crop farming.
Fermentative Production of Harpin Protein by a Recombinant E. coli Strain and its Toxicity Determination
Authors: Wang Min , Sun Xiao Hong , Qiu Tian Lei , Han Mei Lin , Wang Xu Ming
Published: January 2011

Harpin protein was produced by a recombinant E. coli BL21(DE3)/pET30a(+)hrpNEcc in a 1-ton fermentor, and acute oral toxicity test in rats and guinea pig skin sensitization test for Harpin protein were carried out in order to determine its toxicity. The experimental results show that the protein production is up to 4.78 g/L after 16-18 h of fermentation, and the production cost of this protein is 1.75 yuan/g. Harpin protein produced by the recombinant E. coli strain is non-toxic (LD50>5000mg/kg) and has a low allergenicity (rate of sensitization is 0%). The results obtained in this study lay the foundation of the industrial manufacturing and the application on agriculture for Harpin protein.
The Spatial Relationship between Groundwater Resource-Function and Sensitivity
Authors: Yan Ming Jiang , Zhang Guang Hui , Wang Jin Zhe , Nie Zhen Long
Published: January 2011

This research studied spatial relationship between groundwater resource-function and sensitivity by statistical analysis in HuFu Plain. The results indicated that groundwater resource function was classified as middle, while groundwater sensitivity was classified as middle and lower in HuFu Plain. The area , groundwater resource function is classified as rich or poorer and richer or poor, where groundwater sensitivity is higher or lower respectively. At last analyzing the mechanism of multicorresponding relationship based on the same factors that they have.
Study on the Demonstration of Seawater Desalination
Authors: Dai Ying Jie , Li Tian Zhu , Yang Run Qing , Chen De Li , Yan Li Long , Wang Xiao Hui , Zhang Ying
Published: January 2011

In this study, the marine circular economy mode of marine industries was investigated by using utilization of Tianjin Beijiang Power Plant. Tianjin Beijiang Power Plant, taking the effective and circular utilization of resources as core, depending on the regional industrial advantage, expanding the industrial chain continually and making itself play the leading role, perfectly combines sea water desalination, salt making, salt chemical products, building materials and some other items, thereby making the wastes of by-products of former processes the raw materials of latter processes. In this way, the power plant has found a new road of circular economy characterized by maximum resource utilization, minimum waste discharge and optimal economic benefit. The project meets the 3R rules of circular economy, i.e. “high efficiency, low consumption and low pollution”, and its project combining electric power, water and salt is first-ever in China and a typical circular economy project and an ecological project as well, presenting an important demonstration significance and promotion value for the comprehensive development of circular economy.
Cadmium Accumulation and Antioxidative Defenses in Leaves of Zea mays L.
Authors: Bao Tong , Sun Li Na , Xue Qing Hua
Published: January 2011

Corn (Zea Mays L.) seedlings were in four cadmium (Cd) levels of 0-1mg/L in a hydroponic system to analyze the antioxidant enzyme system, Cd content in the shoots and roots and growth responces in the leaves of corn. There was a significant increase in malondialdehyde (MDA) concentration from Cd 0mg/L to 1mg/L, and peroxidase (POD) and catalase (CAT) activities in the leaves of corn subjected to 0-1mg/L Cd. However there was a significant decrease in superoxide dismutase (SOD) activities subjected to 0-1mg/L Cd. This indicated that Cd stress induced an oxidative stress response in corn seedlings, characterized by an accumulation of MDA, decrease in activities of SOD and increase in activities of POD and CAT. Root and leaf Cd contents of corn increased with their exposure Cd level, and the highest Cd concentration occurred in roots, followed by leaves.
Research of Qualitative ELISA and GC-MS for Atrazine in Soil
Authors: Hu Xiao Hang , Wang Xi Wei , Zhou Qin , Wu Yu Mei , Xu Qing Xuan
Published: January 2011

The qualitative ELISA was used for screening out atrazine in soil and positive results were proved with GC-MS. The recoveries 、Precision and the detection limits were estimated in this paper. The average recoveries of ELISA were 96.64%~98.06%,and coefficient of variations were 1.69%~3.36%,the detection limit was 0.04μg/kg, while The average recoveries of GC-MS were 85.78%~87.46%,and coefficient of variations were 4.3%~6.56%,the detection limit was 0.03μg/kg, when the concentrations of 0.5,1.0,5.0μg/kg atrazine standard were add to soil samples. Then three positive samples that filtered by ELISA were proved with GC-MS, and the results were coherent between two methods. The assay found ELISA is a rapid and exact method with good reproducibility for atrazine determination in soil .
Optimization of Culture Conditions for Cold-Active Cellulase Production by Penicillium cordubense D28 Using Response Surface Methodology
Authors: Dong Shuo , Chi Nai Yu , Zhang Qing Fang
Published: January 2011

The design of an optimum and cost-efficient medium for production of cold-active cellulase by Penicillium cordubense D28 was attempted by using response surface methodology (RSM). Based on the Plackett–Burman design, corn meal, (NH4)2SO4 and branc were selected as the most critical nutrient. Subsequently, they were investigated by the Box-Behnken design. Results showed that the maximum cold-active cellulase activity of 110.4U/mL was predicted when the concentration of corn meal, (NH4)2SO4 and branc were 21.97 g/L, 2.39 g/L and 14.99 g/L, respectively. The results were further verified by triplicate experiments. The batch reactors were operated under an optimized condition of the respective corn meal, (NH4)2SO4 and branc concentration of 22 g/L , 2.4 g/L and 15 g/L , the initial pH of 6.0 and experimental temperature of 20 ± 1°C. Without further pH adjustment, the maximum cold-active cellulase activity of 109.8 U/mL was obtained based on the optimized medium with further verified the practicability of this optimum strategy.
Intelligent Fuzzy PID Control of Pneumatic Position Servo System
Authors: Yu Jin , Liu Jian Wei , Liu Xue Fei
Published: January 2011

Pneumatic position servo is a rapidly growing-up technology, control strategy play a key role in system performance. This article studies pneumatic position servo system, through applying the control algorithm of intelligent fuzzy PID, it has settled the difficulties of building precise mathematics model by traditional control methods and the problems of exceeding or lagging in the control process. The experiments show that, the control has achieved the expected results, and has large prospects for application in the area of industry automatization.
The Research on Emergence Mechanism of High-Speed Railway Accident
Authors: Wang Yan Hui , Xiao Xue Mei , Cui Hao
Published: January 2011

The research of high-speed railway accident needs professional knowledge and its operation mechanism is complex. Based on the analysis of the potential safety factors from personnel, equipment and environment system, the definition of emergence mechanism of the high-speed railway accident was given in this paper. With the interaction relationship between the factors as the centre, the emerging studies of high-speed railway accident has been realized through the analysis of the accident chains and summarizing the emergence structure mode of high-speed railway accident.
The SIMULINK Modeling and FPGA Realization of Digital down Converter
Authors: He Hong , Sha De Peng , Sun Hong
Published: January 2011

Digital down converter is the core technology of soft radio receiver. It lets the high-speed-sampled digital signals down-conversion to base band down and then are decimated and high-passed filtered. This paper puts the main emphasis on analyzing the modeling and simulation by SIMULINK of digital mixing converter part and CIC decimation filter part of digital down converter and the realization on FPGA. It has been showed by the results that the problem that the operational pressure is too big to DSP and much too wide bandwidth gose against the channel separation when processing digital signal directly after A/D sampler has been solved well by digital down converter and decimating to reduce unnecessary data.
An Advanced Filter Adaptive to Non-Stationary Clutter in Ultrasonic Color Flow Imaging
Authors: Xie Cong Sheng , Liu Dong C.
Published: January 2011

Traditional clutter rejection methods are based on the hypothesis that the clutter signal originates from stationary or moving tissue with a constant velocity, and they are not valid when there exists considerable acceleration of tissue motion. In this paper, we propose an advanced clutter filter adapted to accelerated tissue motion. It uses the instantaneous frequency to realize the DC remove, and uses the bandwidth of the clutter signal to choose the cutoff frequency of the wall filter, Simulation shows this advanced adaptive filter can efficiently attenuate the non-stationary clutter signals and improves the accuracy and the flexibility of the blood flow estimation.
Research of Wireless Sensor Network Node Based on Vibrating Wire Sensor of Single Coil and Phototube
Authors: Li Da Yong , Zhao Xue Zeng
Published: January 2011

The merits of conventional vibrating wire sensor(VWS) used for roof pressure monitoring are introduced, based on photoelectric single coil VWS and ZigBee technique, this paper has designed a wireless sensor network node. In the mean time, this paper has designed the circuits of wireless communication module、the software design approaches of sweeping frequency and networking for wireless sensor network nodes. Compared to traditional vibrating wire sensor used in roof pressure monitoring system, which not only solves the electromagnetic interfere problem in the course of frequencies’ excitation and picking up but also avoids the difficulty when setting up equipments and laying wires.
Surface Texture Detection for Composite Material Placement Based on Vision
Authors: Chen Wen , Cao Li , Xiao Jun , Huang Sheng Guo
Published: January 2011

This paper presents a texture direction analysis method combing image segmentation and filtering, which makes use of the optical reflection characteristics of composite material’s surface texture. Firstly, segment the image using the centre of mass of the two-dimensional histogram; secondly, the binary image is smoothed by a median filter to improve texture directional information. Experimental results show that the proposed method is outstanding in segmentation quality, so it could meet the stability requirements in automatic placement.
Effects of Low Frequency Electromagnetic Field on the Solidification Structure of Al-4.5%Cu Alloy during Level Casting Process
Authors: Wang Xiang Jie , Chen Dan Dan , Jiang Hui Xue , Wang Gao Song , Zhu Qing Feng , Cui Jian Zhong
Published: January 2011

On the basis of conventional level casting, low frequency electromagnetic field is applied during conventional level casting process. Effects of low frequency electromagnetic field on melt flow, macrostructure and microstructure have been studied. The experiment is performed on the Al-4.5% Cu alloy, and the experimental results show that with the application of the low frequency electromagnetic field, the macrostructure and microstructure are changed greatly. The reasons for the low frequency electromagnetic field changing the macrostructure and microstructure of the ingot were summarized.
Numerical Calculation of a Missile's Aerodynamic Characteristic
Authors: Yue Chun Guo , Chang Xin Long , Zhang You Hong , Yang Shu Jun
Published: January 2011

In virtue of Fluent of CFD software, numerical computations of aerodynamics of an air-to-air missile in different mach numbers and different attack angles were carried though. The movement trends of lift coefficient, drag coefficient and pitching moment coefficient with variety of mach numbers and attack angles were gained, meanwhile, distributing trends of pressure, temperature and weather velocity were also obtained. The results indicated that the basis and references could be offered by numerical computation results for shape design of missile and definite preponderances were showed than traditionary numerical computation methods.
Distributed Energy-Efficient Unequal Clustering Mechanism for Wireless Sensor Networks
Authors: Jiang Chang Jiang , Shi Wei Ren , Xiang Min
Published: January 2011

Unequal clustering mechanism, in combination with inter-cluster multihop routing, provides a new effective way to balance the energy dissipation among nodes and prolong the lifetime of wireless sensor networks. In this paper, a distributed energy-efficient unequal clustering mechanism (DEEUC) is proposed and evaluated. By a time based competitive clustering algorithm, DEEUC partitions all nodes into clusters of unequal size, in which the clusters closer to the base station have smaller size. The cluster heads of these clusters can preserve some more energy for the inter-cluster relay traffic and the “hot-spots” problem can be avoided. For inter-cluster communication, DEEUC adopts an energy-aware multihop routing to reduce the energy consumption of the cluster heads. Simulation results demonstrate that the protocol can efficiently decrease the dead speed of the nodes and prolong the network lifetime
Multi-Level BOP Based Assembly Process Data Organization Model
Authors: Zhou Qiu Zhong , Zha Hao Yu
Published: January 2011

To deeply promote the digital enterprise construction, it’s necessary to provide an assembly process data organization model which meet all the requirements of product design and production management. Assembly process data requirement was analyzed on the basis of reference the foreign and internal research achievement. Then an idea of multi-level assembly process flow was proposed by analyzing the procedure of product design and production. At the same time, Multi-level BOP based assembly process data model which fit all the requirement of assembly procedure was constructed through the analyzing of material flow and assembly resource relationship among each unit of assembly flow. In addition, data endorsement and application of this model in the work of product design, production plan and production prepare was expounded. Accordingly, the bridge and bond function resulted by this model between product design and production was certified.
Simulation Research on Cutting Process of Single Abrasive Grain Based on FEM and SPH Method
Authors: Su Chong , Ding Jiang Min , Zhu Li Da
Published: January 2011

Cutting process of single abrasive grain was simulated by Smoothed Particle Hydrodynamics and Finite Element Method. Chip mechanism of single abrasive grain was analyzed according to the stress variation of grain and workpiece material, and motion situation of smoothed particles in cutting layer. Effects of abrasive grain rake angle and cutting depth on cutting deformation of workpiece material were also analyzed. It is concluded that workpiece material occurs to plastic deformation, flows to the side and front owing to the extrusion of abrasive grain, and finally forms chip in front of abrasive grain; cutting capability increases with the increase of abrasive grain rake angle, it results in the increase of material protrusion in front of abrasive rain and relatively decrease of material protrusion beside abrasive grain; workpiece material deformation and cutting force increase with the increase of cutting depth. Scratching experiment of abrasive grains was carried out by using vitrified bonded CBN block. It is found that deformation laws of workpiece material in the simulation and experiment are consistent. It is proved that the simulation results are correct, and the simulation method is feasible
Rational Scale Control Model for Construction Workers Based on Hybrid Intelligent Techniques
Authors: Xie Ying
Published: January 2011

Chinese construction industry, a vital part of Chinese economy, is meaningful to absorb a large number of human resources. But with the rapid development of gross product of construction industry, labor productivity dose not increased considering construction worker as input resource. For the effective implementation of human resource policies, in this paper, based on the factor analysis theory and intelligent technology, a hybrid model of PCA and Least Squares Support Vector Machines are combined to predict the rational scale of construction workers. Relative data is collected from National Bureau of Statistics of China. Data analysis shows the proposed models, especially based on LS-SVMs, have more steady performance and higher accuracy.
Manufacturing Feature Modeling System Framework Based on XML and UG Platform
Authors: Cao Yan , Du Jiang
Published: January 2011

Feature modeling technology is the requirement of Advanced Manufacturing Technology (AMT). It is one of the key technologies of CAD/CAPP/CAM integrated system to build a shared part feature model. A feature modeling system can provide not only the geometry information of a part, but also the processing information of the part, which is needed by the latter CAM system, to realize information share and exchange between CAX systems. In the paper, feature concept, feature classification, model structure and modeling method based on features are introduced. Then, an interactive feature modeling method is presented. According to the requirement of CAPP, the system developed can supply the processing information to generate the corresponding manufacturing feature model that can be output in XML file format for a CAPP system.
Analysis of Ceramic Pattern Case
Authors: Huang Hua , Zhang Yi Lai , Zhai Yu Ming
Published: January 2011

By analyzing and summarizing a large number of ceramic patterns, the paper introduces a so-called “pattern case” concept. A reusable component is extracted from a pattern, forms a pattern primitive, and is stored in the library of pattern primitives. Such a pattern abstract structure that doesn’t depend on any concrete data is referred to as a “case”. The paper gives a detailed analysis of several common ceramic patterns cases. Our work places a certain theoretical foundation for achieving intelligence of computerized ceramic pattern design.
ForCES Architecture Router Models in OPNET
Authors: Sheng Xin Ya , Wang Yu , Wang Wei Ming , Zhou Jing Jing
Published: January 2011

Open reconfigurable router (ForCES) is based on the separation of control parts and forwarding parts that can satisfy the open programmable request of the next generation router, and is the next generation router's development direction. At present, the research on ForCES architeture router has completed the system structure and interface standard protocol design, and realized the basic logic function blocks (LFBs) of the control element (CE) and forwarding element (FE), ForCES prototypemachine has also succeeded in operation. However, the performance of any software and protocol must be inspected. Performance evaluation can adopt queuing theory、random Petri nets、 stochastic process algebra and OPNET software, etc. OPNET with user-friendly interface and stratified modeling thought can simplify the process of modeling, clear modeling methodology. The paper adopts OPNET Modeler simulation software to study on ForCES architecture router performance.
SWBDS: Web Data Sources Management Infrastructure for Semantic Web Applications
Authors: Zhou Lin Hua , Fan Jian Bo , He Ke Jia
Published: January 2011

The Semantic Web envisions a World Wide Web in which datasources are encapsulated and described with rich semantics, and demander can issue complex queries. A critical problem in the situation is how to efficiently describe, organize and search these encapsulated datasources. This paper describes the Semantic Web-Based Data service(SWBDS for short) approach, which addresses these challenges. SWBDS introduces an ontology-based approach to, mapping web data sources to data service (DS for short), publishing DS with the shared domain ontology, and answering queries through DS provided interface. We define the domain ontology to illustrate the DS interface. The domain ontology is described in OWL that can be understood and processed by machines. Therefore, SWBDS can provide reasoning functions and facilitate datasources management with little human effort. This new system model makes full use of legacy applications and is flexible for future extensions.
Research on Multi-Affective Fuzzy Computing and Product Competitive Advantage of Online Product Reviews
Authors: Zhao Narisa , Li Yuan
Published: January 2011

The study focused on online product reviews, and took the consumer multi-affective analysis as a main line. Through the establishment of the classification system of consumer multi-affective expression and based on the ambiguous language qualifier operators in fuzzy theory, a multi-affective fuzzy computing algorithm of online product reviews (MFCA-OPR) is introduced. Based on the algorithm, through satisfaction and concerned about the degree of product attribute calculation of customers, the “quadrifid graph model” is applied to product competitive superiority and verified the validity of the calculation methods.
Clinical Research of TCM Common Syndrome for Chronic Pulmonary Heart Disease Based on Dynamic Kohonen Network and Decision Tree
Authors: Hu Jin Liang , Yue Cai Qing , Li Jian Sheng , Shen Jian Jing
Published: January 2011

To explore the essential characteristic of TCM syndromes for Chronic pulmonary heart disease (CPHD) The CPHD subjects were recruited from four TCM hospitalsrespirations department by means of clinical epidemiological method.The research dates were inputted with Epidata ver.3.1 and analyzed with dynamic Kohonen Network and Decision Tree adopted to analysis the common syndrome for CPHD. There were six common rules before rules transformed and main symptom and minor symptom for common syndrome setted. The diagnostic accuracy rate was72.2% The data mining technology could been used into the TCM syndrome characteristic research.
The Particle Swarm Optimization Algorithm for Solving Rectangular Packing Problem
Authors: Qi Yang , Wang Jin Min
Published: January 2011

Based on extensive researches on various heuristic algorithms, the particle swarm optimization algorithm was developed to solve the rectangular packing problems. The algorithm optimizes the parameter of dynamic attractive factors by updating the position and the velocity of the particles, and applies perturbation strategy to solve the matter that it is easy to stick at local optima. The experimental result shows that the algorithm can get a better packing result by less time.
Performance Analysis Method under Time-Space Variations
Authors: Jing Hu
Published: January 2011

With shrinking process size, many variations have a growing impact on circuit performance for today’s integrated circuit(IC) technologies. In this paper, we describe a high-order model of circuit performance analysis under time-space variations. The time-space variations, such as process variations, place and route imformance, environment parameters and temporal variations, are included in hierarachical perfornance analysis. The time-space variations are increased in variance analysis. Based on quadratic model, coefficients of the K-L expansion and function item are decided. The high-order analysis model is built. The result of experiment proves that the proposed method can improve analysis performance effectively.
Refinement Methodology for Modeling of Urban Road Traffic Networks
Authors: Yue Hao
Published: January 2011

This paper proposes a modular frame based on hybrid Petri nets for modeling the signalized urban traffic network for control purpose. A kind of level of detail modeling methodology is used. After an aggregate model of the urban traffic network system is defined, the key elements such as traffic lights and intersections, which describe the typical feature of the traffic network in the aggregate model, are refined to introduce detail models. The proposed model of the intersection describes the turning direction of each traffic flow explicitly and takes into account the conflicts among the traffic flows. Furthermore, the time factor is considered in the system model. As a result, the total model obtained can not only reflect the logical relationship among the traffic flows, but also describe and calculate the physical characteristics of the vehicles such as the location, velocity, and passing time interval. Consequently, the performance index can be calculated with less effort for a given traffic timing plan and different timing plans can be compared in order that an optimal or suboptimal traffic control plan may be chosen. Finally, the implementation issues of the methodology are discussed.
A Method of Hyperbola Object Localization Based on Time Difference in Sensor Networks
Authors: Cheng Rui , Cheng Yuan Guo , Ma Ze Run
Published: January 2011

Aiming at the issue of object localization in acoustic sensor networks, a method of hyperbola localization based on time difference of arrival is proposed. This method calculates the position of an object by employing a group of time differences which are formed by the acoustic signals arriving at various sensors. Three special sensors are employed to build the relative coordinates system and create their respective hyperbolas of acoustic source, the locations of an object can be calculated by these hyperbolas, which are expressed as the relative coordinates. These relative locations are transformed into the absolute locations by coordinates transforming. Simple simulations demonstrate this method has favorable localization accuracy.
Research on the Algorithm of Key Object Extraction in Motion Video Images
Authors: Qu Zhong , Wei Wei , Zhang Zhen Wei , Wang Dong
Published: January 2011

In this paper, we extract for key objects of motion video images (mainly people), then do researches with the technology of object detection and tracking. First, we extract moving object edge and foreground object template with the use of the method of edge detection, and then compare the resulting object template with the original image, thus dye the positions with the colour of the corresponding point coordinates in the original image which belongs to the extent of template filled region. Simulation results show that the proposed algorithm has some advantages and robustness and could meet project needs.
Video Vehicle Detection Based on Local Feature
Authors: Qian Zhi Ming , Shi Hong Xing , Yang Jia Kuan
Published: January 2011

This paper presents a video vehicle detection method that combines local binary pattern (LBP) and motion histogram. First, use LBP modeling and updating the background in video image. Second, detect the video vehicles by means of the motion histogram. Finally, eliminates shadows from the detected vehicle region, and improves accuracy of vehicle detection. Experiments in some vehicle database show that our method has a better performance.
An Intelligent Approach to Dynamic Scheduling System of Earth Observation Satellites
Authors: Feng Yao , He Ren Jie , Li Ju Fang , Xing Li Ning
Published: January 2011

With the increased number of earth observation satellites, the process of acquiring high quality solution schedule for multi-satellite, multi-orbit and multi-user is more difficult than before. The multi-objective hierarchical genetic algorithm with preference and dynamic heuristic algorithm are proposed to solve the dynamic scheduling problem of earth observation satellite system. The experimental results performed on some benchmark problems suggest that this proposed approach is effective to the dynamic scheduling system.
A New Web Service Discovery Algorithm Based on Similarity Degree
Authors: Xu Zhu Jun , Zhang Su
Published: January 2011

To discover requested web services in Internet, this paper proposes a new web service discovery algorithm based on ontology. It uses tree-form data structure to describe the web services and give all the nodes a weight value by certain strategy, then compute the semantic similarity between the web services requested and the services registered. To validate the feasibility and effectiveness of the algorithm, the paper constructs a self-developed prototype system to show how well it works. The experiments prove that this algorithm has high recall rate and precision than other methods.
Research on Joint Scheduling of Multiple Imaging Satellites with Multiple Sensors
Authors: Feng Yao , He Ren Jie , Li Ju Fang , Xing Li Ning
Published: January 2011

Guided by the application requirements of imaging satellite, this work focuses on the model construction and heuristic rule design to the joint scheduling problem of multi imaging satellites. It analyses the imaging procedure, imaging constraints, inputs and outputs, the basic scheduling flow and characteristics of the joint scheduling problem of multi imaging satellites. The heuristic algorithm was proposed to effectively solve this problem. Finally, a multi imaging satellites scheduling system is developed.
Concurrent Hierarchical Model and Analysis Based on Fuzzy-Timing Petri Net
Authors: Liu Yong Shan , Hao Tian Bao , Shen Yan Qing
Published: January 2011

In order to simplify the workflow and make efficient use of resources in workflow management, a hierarchical concurrent model based on fuzzy-timing Petri net is proposed. To analyze complicated structure with layered approach, this model turns a complex concurrent network structure into order structure, which simplifies the entire workflow. Proof of the feasibility and correctness of the model is given and verified by an example. In the example, minimum processors are used to deal with corresponding activities, without changing the duration of the case, therefore system resources are efficiently used.
A Improved Routing Algorithm for MAODV Based on Path Stability
Authors: Fan Zi Fu , Wu Bi Yun , Wan Xiao Yu
Published: January 2011

In mobile Ad Hoc network, node movement makes the network topology change frequently. In order to improve the stability of routing, a new routing protocol PPC-MAODV (Path Prediction compute based multicast Ad-hoc on-demand Routing Protocol) is proposed in this paper. This protocol takes the path stability into account and reduces the times of route repairing and route reconstructing by selecting the path with the high stability and less hops to transmit data. Simulations show that the PPC-MAODV proposed in this paper is valid and can reduce the packet delivery ratio and end-to-end delay.
Method Based on Knowledge Modules of Hydraulic Fault and it’s Application
Authors: Yu Jin , Chen Shao Hua , Huang Guo Qin
Published: January 2011

According to various problems by using traditional redundant fault-tolerance technology and information fault-tolerant technology, a novel method of knowledge modules of hydraulic fault (KMHF) was proposed in this paper. The principle of the method was that new type of fluid information expression units were designed to perceive and process the fault information of the system, then the information was expressed as mechanical signal, hydraulic signal or electrical signal, which could be used to implement fault tolerance at power stage. The engineering application of the method of KMHF can solve the problems of the whole fault tolerance in the hydraulic system, moreover, with it the structure of hydraulic system can be greatly simplified.
An Efficient Data Stream Clustering Algorithm Based on Dynamic Grids
Authors: Wu Yun , Gao Feng
Published: January 2011

Data mining based on data stream has become one of hot research fields. In this paper we present a novel algorithm for clustering data streams based on dynamic grids named DG-CluStream. DG-CluStream partitions and prunes grids dynamically, improves the accuracy of grids gradually through saving feature tuples of grids. The algorithm can discover clusters with arbitrary shape and is more efficient than those static methods due to a notable decrease on the number of the grids. Through fading coefficient, DG-CluStream can also deal with the problem of concept drifting efficiently. The experimental results on real datasets and synthetic datasets demonstrate promising availabilities of the approach.
The Construction of Platform for Teachers' Training: A Study from Perspective of Mobile Education
Authors: Zhu Jing Dong , Zhou Zhen
Published: January 2011

With the rapid development of wireless mobile communicational technology and the growing demand for lifelong education, mobile education has become a convenient and effective way of education and received considerable attention and research. To further meet the needs of study at “any time, anywhere, any style” for teachers and solve the problem that the difficulty of continuing education and training of in-service teachers, this paper uses the wireless communicational technology of 3G to create the platform for teachers’ training by the main mobile terminals of mobile phone. It will promote the better service under the concept of mobile learning and it has great significance for solving the problems in the traditional training and supporting teachers to enhance the professional development.
South Korean Commodity and Its Design Concept
Authors: Wang Ling
Published: January 2011

This paper analyses the main reason why Korean commodities can be so fashionable throughout Asia and even the world by going through Korean products’ design from three aspects, harmonious design, appeal design and lovely cultural design, at the same time, it expounds the secret of South Korea's design’s leading position from its Cultural connotation and scientific and technological content. Owing to its many advantages, such as Exquisite design, reasonable man-machine, Korean commodity brings people a sense of emotion and enjoyment while using the products.