bluuebunny/crossref_metadata_2025 huggingface dataset:
Modification of Printing Aluminum Powders by Wet Covering Method with Composite Surfactants
Authors: Du Bin , Zhou Shi Sheng , Wang Nan
Published: March 2011

Considering the fact of low gloss and masking power of aluminum powder, the aluminum powder is chemically modified by wet covering with eight kinds of single surfactants such as Oleic acid, Stearic acid, Sodium dodecyl sulfonate, Sodium stearate, Polyvinyl alcohol, Polyethylene glycol, Tween-80 and Emulsifier-OP in different proportions on the surface of aluminum powder and the gloss of aluminum paste printing ink concocted with the covered aluminum powder is tested. The results show that the gloss of the aluminum powder covered by one percent Polyvinyl alcohol increases most significant. In order to upgrade the gloss of the aluminum paste printing ink, an orthogonal experiment is carried out by choosing four surfactants such as Polyvinyl alcohol as influencing factors and their addition amounts as researched levels. The optimal surface modification formula is obtained based on the experiment. The dosage of surfactant is one percent of the aluminum powder, Sodium dodecyl sulfonate accounts for 25.00% of the total surfactant’s weight, Sodium stearate accounts for 37.50% of the total surfactant’s weight, Tween-80 accounts for 12.50% of the total surfactant and Polyvinyl alcohol accounts for 25.00% of the total surfactant’s weight. The prescription can concoct the commodity aluminum powder and passed 1200 mesh to the aluminum paste printing ink with commodity ink to satisfy the request of relief printing and intaglio printing. The gloss of the printed aluminum paste printing ink reaches 81.3.
Improved CPN Network Applying in the Failure Diagnosis of Electronic Gasoline
Authors: Kong Jing , Bao Su Su
Published: March 2011

We diagnose the Electronic Gasoline failure according to the improved CPN neural network. In the normal CPN neural network, it allows one neuron to win. We improved the CPN neural network based on the developed CPN and allow two neurons to win in the competition layer. The two winning neurons affect the Weights simultaneously. This improved method can adjust the weight values in the CPN model more accurately and give more accurate output for testing data.
A Refined Method for the Extraction of Scutellaria Baicalensis Extracts and its Relationship with Antibacterial Effects
Authors: Zhang Jing Lei
Published: March 2011

Scutellaria baicalensis Georgi was extracted by ethanol and distilled water as solvent, the antimicrobial activities of the extracted active components (flavonoids) were tested on Staphylococcus aureus, Escherichia coli, Bacillus subtilis, yeast and Aspergillus niger. The results showed that the best extraction method was extracted twice by 60% ethanol at 80°C, firstly with solid to liquid ratio 1:10 for 1 h, and then extracted with solid to liquid ratio 1:8 for 1 h. The recovery of the extracts reached 8.72% after acid precipitation. The extracts were dried at 60°C to ambient pressure. The antibacterial activities of different concentrations of extracts of Scutellaria were tested on Staphylococcus aureus, Bacillus subtilis and Enterobacter aerogenes, the minimum inhibitory concentrations were 10 mg/mL, 10 mg/mL and 10 mg/mL.
Structure Reverse Design and Abrasion-Resistant Performance of Submersible Mixer’s Impeller Based on 3D Solid Model
Authors: Xu Wei Xing , Yuan Jia Ping
Published: March 2011

In a wastewater treatment plant, there are some problems that the impellers of submersible mixers were damaged with abrasion and the impellers’ spare parts must be imported. To solve this problem and realize domestic manufacture, based on reverse engineering theory, utilizing three coordinates measuring machine and applications of Surface and Pro/E, then the Pro/E software was used to develop the impeller solid model. The gained impeller model accords with the physical one with high accuracy. By using this model, the manufacture of its mould and research on abrasion-resistant performance as well as the implementation of domestic manufacture of its parts are completed. The new impeller has been employed in this plant and passed field running experiment. The results indicate that its mixing and propelling performance is excellent and abrasion does not happen in more than three months. It has prominent economic and social benefit.
Research on Environmental Optimization Mechanism of the Northeast Old Industrial Base
Authors: Xi Xiu Yan
Published: March 2011

Seeing the important strategic position of the Northeast Old Industrial Base the paper establishes an evaluation indicator system of low-carbon on environment optimization mechanism firstly. On this basis, with the gray relative entropy method the paper evaluates the environmental optimization effect of the Northeast Old Industrial Base in 2002-2007. Eventually the paper draws a scientific and precise entropy change series of low-carbon system with the gray relational entropy model, and as to the Northeast Old Industrial Base the results means that environmental optimization of low-carbon system in the Northeast region is in a cyclical and orderly change path.
High Accuracy Computational Method for Ordinary Differential Equation with Two Small Parameters
Authors: Cai Xin
Published: March 2011

Ordinary differential equation with two small parameters was considered. Since the presence of two small parameters, the solution of the problem will change rapidly near both sides of the boundary layer. Firstly, the equation was decomposed into several equations in order to have fourth order asymptotic decomposition. The asymptotic properties of all these equations were discussed. Secondly, high order numerical methods were constructed for left side and right side singular component. Thirdly, a class of high numerical methods were presented when the special case. Finally, the error estimations for all these numerical methods were given.
Structured Scheme of Data Mining Based on SQL Server 2005
Authors: Han Xiao Hong , Wang Lei , Zhang Pei Jun
Published: March 2011

This paper highlights the data mining components of SQL Server 2005 and the building of data mining process, completes the creation, training, and the corresponding predictions of data mining model, implements the operation of data mining using data mining algorithms, so the application program, relationship database and data mining are seamless integrated. SQL Server 2005 provides data mining solution with a powerful design and development platform, without too much acquaintance with data mining techniques and data mining algorithms.
Experimental Study on Seismic Performance of CFRP Concrete Beams
Authors: Dong Jian Tao , Zhao Jun , Shi Kai
Published: March 2011

An comparative experiment was done on the concrete beams and concrete beams with CFRP material under dynamic load to study seismic performance of the concrete beams with CFRP materials’ fracture distribution,mode of failure,hysteretic curves and so on. The research shows that the concrete beams with CFRP materials have a better seismic performace.
The Combined Effect of Grain Size and Strain Rate on the Mechanical Behavior in Ultra-High Purity Aluminum
Authors: Wang Yong Gang , Wang Chun Lei , Liu Hong Wei
Published: March 2011

The effect of grain size on the mechanical properties in ultra-high pure aluminum had been investigated as a function of strain rate. Specimens with average grain diameter sizes of 243, 678 and 1070 m were compressed and elongated at quasi-static and high strain rates by a computer controlled servo-hydraulic testing machine and a Split Hopkinson Pressure (Tension) Bar (SHPB and SHTB). The mechanical properties were found to vary significantly with grain size, and strain rate. The relationship between flow stress and grain size can be expressed by a Hall - Petch relation with the different slope for both compressive tests and tensile tests. The influence of strain rate on the slope of the Hall - Petch relation is such that in compression, the slope does not change much, but in tension, there is an increase in the slope value. The strain hardening rate was seen to increase with increasing strain rate. The strain rate dependence of flow stress is obvious, and is seen to be more significant for the smallest grain size specimens. The 3D fractographs illustrated that the numbers of the dimples decrease with the increase of the grain size.
The Effect of Cooling Rate to the Extraction Ratio of Boron-Containing Slag
Authors: Zhan Hong Ren , Fan Zhan Guo , Jiang Xiao Fen , Liu Su Lan
Published: March 2011

Twin zone cooling process with high extraction ratio is established by studying the effect of cooling rate on the boron extraction ratio of boron-containing slag. The viscosity increases rapidly by continuous cooling and the prior crystallization of forsterite, which hinders the nucleation and growth of suanite, result in the low extraction ratio of boron. With the twin zone cooling process, the rapid cooling in 1500°C-1200°C, restrains the formation of forsterite and reduces the inhibition effect of forsterite on the nucleation and growth of suanite. Heat is preserved at 1200°C to ensure the sufficient interaction time among the particles, which is favorable toward the nucleation and growth of suanite. As a result, the extraction ratio of boron-rich slag is improved.
Graph Based Learning for Hybrid Algorithm to Image Annotation
Authors: Hu Xiao Hong , Wang Xiao Lei , Wei Xiu Ran
Published: March 2011

Graph based learning has been an active research topic in machine learning community as well as many application areas including image annotation recently. In order to exploit the correlation between keywords and images, we proposed a novel image annotation method via graph based learning and semantic fusion to estimate the probability of keywords being the caption of an image, and present a new framework to solve the problem. The experiments over Corel images have shown that this approach outperforms other methods and is effective for image annotation.
Effect of Warm-up Temperature Rates on Morphologies of Porous Polyimide Membranes
Authors: Xiao Jiu Mei
Published: March 2011

A simple process to fabricate porous polyimide membranes (PPMs) and effect of warm-up temperature rates on morphologies of the PPMs were reported in this paper. The polymer solution layer consisting of the corresponding polyamic acid (PAA), solvent and the pore forming agents with high boiling temperature or high decomposition temperature was first treated under a lower temperature (about 150°C). The received solid membrane was further imidized by a higher temperature (about 270°C) and the pore forming agents were removed from the membrane at a temperature above their boiling temperature or decomposition temperature at last. Then a PPM was obtained. As the temperature was elevated gradually, the porosity of the received PAA membrane was lower than that of the PPM treated by a faster warm-up temperature rate.
Study on Mechanism of Propagation of Consolidated Jointed Rock Mass
Authors: Wang Zhong Chang
Published: March 2011

To obtain failure characteristic of jointed rock mass, the propagation mechanism of twin collinear cracks with different angle is simulated by finite element under different consolidated condition. The change laws of stress strength gene, the slipping displacement of middle nodes of faces of crack, shear strain and plastic strain near crack tip is derived under different consolidated condition. It is shown that the consolidation role is the evident and the stress concentration is weakened when the inclination angle of crack is in range of 30°-60°. The corresponding value under consolidated condition is smaller than that under without consolidated condition. The slipping displacement of middle points of crack faces in y direction is mainly. The slipping displacement in y direction decreases and the slipping displacement in x direction increases with the increases of the inclination angle of crack. The compressive effect is bigger than that the shear effect.
Position Detection Methods of Position Sensor-Less Brushless DC Motor
Authors: Ji Hua , Han Zhen Yun , Liu Hong Li
Published: March 2011

With the widely use of Permanent Magnet Brushless DC Motor (BLDCM) in many fields, the superiority in the control method of position sensor-less is more and more obvious. In this paper several control methods of position sensor-less for BLDCM are presents, and a novel technique, the method of speed-independent position function, is introduced to detect the rotor position of BLDCM. This method may detect the rotor position from almost zero speed to high speed, and may also give the commutation time.
The Current Study Situation and Prospect Development of Direct Torque Control in PMSM Drive System
Authors: Ji Hua , Han Zhen Yun , Liu Hong Li
Published: March 2011

Direct torque control (DTC) technology in asynchronous motor is one of new frequency transformation drive technology after the vector control technology. In recent years people begin to apply it to the synchronous motors. This paper introduces the application station of direct torque control in permanent magnet synchronous motor drives, discusses several key problems and analyses its development direction in the future.
A Spectral Moment Estimation Method for Wind Profile Radar
Authors: Hui Jian Xin , Wu Lei , Gao Yu Chun , Zhou Jie
Published: March 2011

Spectrum in the wind profile radar data processing, radar detection of low-level spectral data from the library there are usually clutter, intermittent clutter, clutter and atmospheric echoes magnetic mixed overlap situation. In order to effectively restrain and remove clutter and increase the wind profile radar detection range and accuracy, must be on the air back to the effective spectrum of the spectral moments estimation. Based on the wind profile radar Doppler echo power spectral analysis, maximum likelihood method based on estimated spectral data of radar echo spectrum method using MATLAB simulation analysis , compared with the conventional method of analysis to verify the feasibility and effectiveness of the algorithm, also, try the algorithm is applied to the complexity of the weather with a strong interference case of precipitation particles; Data analysis showed that the actual detection, from the library in the lower spectrum moment estimation has been improved significantly.
Evaluation and Selection of the Strategic Alliance Partner of Port Logistics Based on the Unascertained Set
Authors: Huang Wei Jian , Zhao Hua , Huang Liang , Du Wei
Published: March 2011

The enterprise of port logistics has its own traits such as very high specialty of assets, high uncertainty of internal and external environment and high frequency of transaction. Establishing the strategic alliance of port logistics is the necessary way to improve the competition of port logistic enterprise. The selection of the strategic partner of port logistics is the key to the supply chain. The unascertained evaluation is a simple and efficient mode to offer the method of rational evaluation for the enterprise of port logistics to select the strategic partner.
Study of Deformation Behavior of Ultra-High Molecular Weight Polyethylene (UHMWPE)
Authors: Xiao Jiu Mei , Shang Xin Chun , Wen Bin
Published: March 2011

Microscopic and macroscopic deformation behavior of ultra-high molecular weight polyethylene (UHMWPE) under the drawing force was studied in this paper. The scanning electron microscopy (SEM) experimental results indicated that: under the force, non-crystalline materials distorted, crystal faces were torn along grain boundaries and crystal grains were disrupted. So crystal size became smaller, more grain boundaries and more voids were formed, which supplied more free space for the movement of crystal grains and chain segments. The torsion test results showed that the UHMWPE exhibited excellent flexibility and the specimen had more excellent deformation ability at a slower loading rate.
Study on Coercivity Mechanism of the Sintered NdFeB Magnets by Zr Addition
Authors: Zhang Peng Yue , Ge Hong Liang , Pan Min Xiang , Wu Qiong , Yang Hang Fu , Jiao Zhi Wei , Gong Jie , Peng Xiao Ling
Published: March 2011

The effects of Zr addition on the microstructure and magnetic properties of the sintered NdFeB magnets were investigated by X-ray diffraction (XRD) and BH magnetic tester. The XRD analysis showed that both the Zr-free and Zr-doped samples are composed of main amount of Tetragonal phase Nd2Fe14B (P42/mnm) and trace amount of Nd-rich phase, but adding Zr reduces significantly the values of pole density factor of (004), (006) and (008) crystal faces for the sintered Nd(Fe,Zr)B magnets estimated by Horta-formula. Accordingly, the coercivity of the sample with Zr addition is reduced from 2038 kA/m down to 1951 kA/m. The study of the Kronmüller-plot shows that the nucleation is the dominating mechanism for the magnetization reversal in these two kinds of magnets, and two microstructural parameters of αk and Neff are obtained also.
Analysis and Design of Automatic Steering Sliding Mode Control
Authors: Zhao Xi Jun , Zhang Wei , Liu Hai Ou , Chen Hui Yan
Published: March 2011

A kind of intelligent vehicle–road model based on look-ahead reference system is established. According to the state equation, a novel sliding mode variable structure control algorithm is proposed. The sliding function is defined using pole placement technology, while the trending motion is determined by exponential reaching law. Accordingly, the effect of poles and reaching law parameters to close loop control system is analyzed in depth in order to design a good performance automatic control system. Finally, the developed sliding mode controller is validated by simulation study. Simulation results show that the designed controller has good performance in road tracking scenario.
Effects of Co-Substrates and Inorganic Ions on Biodegradation of Oil-Degrading Strains
Authors: Feng Jian Yang , Zhou Xiao De
Published: March 2011

Six strains named SY1 to SY6 were isolated from oil-polluted soil. The degradation tests of oil by our isolates were carried out under still-reaction-bottle-aeration and shaking-aeration conditions. The co-metabolic characteristics of two co-substrates (ethanol and glucose) and inorganic ions on the biodegradation of oil by our isolates were also studied. The results show that oil can be degraded by the six isolates effectively. The degradation ability of strains is enhanced due to co-substrates added. The enhanced roles of glucose are stronger than ethanol to SY1 and SY5; while the enhanced roles of ethanol are stronger than glucose to SY3.And the enhanced roles of glucose and ethanol are similar to SY2, SY4 and SY6. Inorganic ions, such as Ca2 + Fe2 +, Mg2+, etc, could promote the degradation ability of strains and improve the growth of strains. The degradation effects of mixed strains were inferior to that of single strain. After five days, the degradation rate of SY3 was worst, which was 65.7%. In the mixed strains, there were only 11 groups’ degradation rates greater than that of SY3, and other 46 groups’ degradation rates were less than that of SY3.
Dynamic Modal Analysis of CNC Precision Rotary Worktable
Authors: Cheng Qiang , Xuan Dong Sheng , Liu Zhi Feng
Published: March 2011

The dynamic performance of the worktable has a great influence on machining quality. In order to improve the machining precision, the paper conducts the analysis and research on the workability of a numerical control engine bed rotary worktable from a domestic machine tool factory，and discusses the influence of dynamic characteristics of rotary worktable on the precision of numerical control processing. Firstly Ansys finite element analysis was employed to analyze and simulate the modality and natural frequency of the numerical control rotary worktable under various steps. And then, a vibration test on the numerical control rotary worktable to confirm accuracy of the simulation parameters was carried on. Finally a contrast was made between the theoretical analysis and the experimental analysis to point out the resonance frequency and the distortion of the rotary worktable. Also the influence of numerical control rotary worktable on the numerical control processing was discussed.
Rigid Body Spring Model for Large Aggregate Concrete
Authors: Wang Huai Liang
Published: March 2011

Based on the fundamental test data and the mesoscopic approach, a rigid body spring model is developed for simulation of the behavior of large aggregate concrete subjected to uniaxial or multiaxial load. Firstly, the concrete is treated as a three-phase inhomogeneous system; random aggregate model for fully-graded concrete is used to form the aggregate distribution. Then, based on the rigid body spring discrete element model, a procedure for mesoscopic study behaviour of large aggregate concrete under the two-dimensional stress state is given. At last, the comparison of numerical and experimental results shows that this method could effectively describe the failure behavior of large aggregate concrete under various plane stress state.
Optimal Design of Pre-Forging for Gear Blank Using BP Neural Network and Genetic Algorithm
Authors: Zhang Ming Yue , Wang Xin Yun , Xia Ju Chen
Published: March 2011

The design of pre-forging is very important during multistage forging of producing gear blank. It directly affects the behavior of metal flowing, filled situation of die cavity of finish forging, quality of products and die life. Most designs of pre-forging for gear blank are based on trial and error method. This paper presents a suitable method for practical designation of pre-forging for gear blank by proposing an improved algorithm, which combines Back Propagation Neural Network and Genetic Algorithm. Firstly, the mathematical model between the size parameters of pre-forging and forming force and maximum die stress of finish forging was established by using Back Propagation Neural Network which has the feature of processing highly nonlinear problems. Secondly, the established model was set as the fitness function of Genetic Algorithm. At last, the most superior pre-forging shape and the size parameters were solved by using the Genetic Algorithm with the function of overall situation optimization. These can lead to lower cost and time in the stages of designing pre-forging for gear blank.
Development of a Starch Adhesive for Corrugated Board under Room Temperature
Authors: Luo Peng , Liu Yu Han , Zhao Xiao Qing , Song Pan Pan , Tan Nian Sheng , Sun Meng Yuan
Published: March 2011

The use of starch as a renewable and biodegradable adhesive is becoming increasingly attractive because of the environmental concerns about the industrial wastes generated from petroleum products and the growing awareness of the potential deleterious consequences of greenhouse gas emissions from these activities. Starch adhesive is most extensively used in corrugated board industry because of the abundant supply, low cost, renewability, biodegradability, and ease of chemical modifications. Starch adhesive has great effect on the performance, production technology and manufacturing cost of the corrugated board. It is of great importance to develop starch adhesive with stable properties, high performance, good viscosity, fast curing speed to meet the market requirement. In this paper, oxidation of starch by sodium hypochlorite under aqueous alkaline conditions with the aid of the catalysis of nickel sulphate at room temperature was investigated. The effects of sodium hypochlorite loading and caustic soda dosage on the properties of the starch adhesive were examined. Optimization of starch oxidation is desirable to achieve the highest initial tack and bonding strength. The optimum synthesis condition was obtained. Under the optimum condition, Under the optimum condition, 98.7% of the initial tack and 11.4 N/25 mm of the bonding strength were obtained respectively.. The modified starch adhesive showed great potential for industrial application.
The Dynamic Ant Colony Optimization Based on Permutation and its Application
Authors: Luo Xian Wen
Published: March 2011

To overcome the disadvantages of getting into local optimum of the Ant Colony Optimization, this paper proposes a dynamic adaptive ant algorithm based on permutation. To avoid algorithms getting into stagnation in their anaphase, the lower bound of pheromones is set as a nonzero constant. According to the quality of the solutions ants get in the ant colony, the best part of the ants is selected to release pheromones in a defined amount in terms of the quality of the solutions so as to enhance ants’ capability of searching for optimum solutions in anaphase. The algorithm adopts a more intelligent selection rule of behavior , so the ants can adjust the balance coefficient between exploration and development dynamically in the searching process to effectively inhibit precocity phenomenon in the process of convergence，and improve the searching capability of the algorithm.
Application of COM/DCOM Based Multi-Layer Software Architecture in Measurement & Control Program
Authors: Wei Xian Min
Published: March 2011

Software architecture plays a more and more important role in measurement and control program design and development. It affects not only the progress of design and development, but also the gradual evolution potentiality of measurement and control system. This paper presents a COM/DCOM based N-layer software architecture and its usage in the design and development of the WFD2000 operating program. The application of this architecture greatly improves the reliability, configurability, flexibility and portability of the pressure measurement system.
Research of MP3 Audio Digital Watermark Algorithm Based on Hash Values
Authors: Wei Xian Min
Published: March 2011

This paper puts forwards large audio blind watermark algorithm based on MDCT and compression principles of MP3.Using Hash function, psychoacoustic model and MP3 coding/decoding to realize real-time distilling, and validating watermarking recessive, capability, real-timing and etc through experiment and analysis. Experiments show that the scheme can obtain be a higher embedded capacity to change the original audio signal smaller, has good stealth, integrity watermark extraction time is short, and can be completed synchronously during the audio play process.
Research on Rotary Power Head of Rock Driller with Higher-Order Elliptic Profile Movable Tooth Transmission
Authors: Luo You Xin , Li Heng Shu , Wen Hui Jun
Published: March 2011

Rotary power head is a key component of the cutting drill. After researching the current situation of the rotary power head, this paper proposed a new device called higher-order elliptic profile movable tooth transmission, and applied this device to the cutting drill, then designed a new rotary power head based on this device. The moving parts in a higher-order elliptic profile movable tooth transmission are self-balancing, such as the input shaft and the output one. The transmission can achieve the random difference of the teeth. A rotary power head of a drill with this transmission has many advantages, such as convenient disassembly or loading, large transmission torque, small radial size and the suitability for heavy loads. Finally, 3D model based on Solidworks2010 was established in this paper.
Research on Rotary Power Head of Drill with Higher-Order Elliptic Profile End Surface Movable Tooth Transmission
Authors: Luo You Xin , Li Heng Shu , Wen Hui Jun
Published: March 2011

A rotary power head is a key component of the cutting drill. In this paper, first, we researched the current situation of the rotary power head; Second, we proposed a new retard device called higher-order elliptic end surface movable tooth transmission, and then designed a new rotary power head based on this device. The moving parts in the transmission such as input and output shafts are self-balancing, so the transmission can achieve the random tooth difference. A rotary power head of a drill with this transmission has many advantages, such as convenient disassembly or loading, large transmission torque, small radial size and the suitability for heavy loads. Finally, 3D model based on Solidworks2010 was established.
Research of Rotary Power Head of Drill with Roulette Curve Profile Movable Tooth Transmission
Authors: Luo You Xin , Li Heng Shu , Wen Hui Jun
Published: March 2011

The rotary power head is the most important part of the cutting drill. After researching the status of the rotary power head, we invented a new decelerator—roulette curve profile movable tooth transmission, and applied it in cutting drill, we presented the rotary power head with roulette curve profile movable tooth transmission. The moving components, such as the input shaft and the output shaft, of the roulette curve profile movable tooth transmission are self-balance, so the transmission can bring about random tooth number difference. Analyzing the principle of the transmission, we create the three-dimensional modeling by using Solidworks2010. The rotary power head with the new transmission installed is convenient in assembling and disassembling, transferring bigger torque, having a relatively small radial dimension, suitable for heavy-loaded rock drill machine.
Research on the Short-Time Bias Stability of the Solid Vibration Beam Gyroscope
Authors: Bai Xian Lin , Lu Yong Le , Liu Yu
Published: March 2011

In this paper, Short-term bias stability of solid state vibration beam gyroscope is studied. Based on the dynamical equation of solid vibration beam gyroscope, the elements effecting the zero stability which effects the short term bias stability was discussed. The computed result shows that the main factors for short-term bias stability is transient solution error. The output signal has been filtered by the low pass filter, according to the characteristic of transient solution error. Simulation results demonstrate that low-pass filter can effectively suppress the error of output signal. In addition, the signal of solid state vibrating gyroscope filtered by low-pass filter agrees well with the simulation result. From the simulation and experiment data, the validity of the model and the feasibility of the filtering programs has been proved.
Environmental Risk Study on CH3NO2
Authors: Zhou Ji Hong , Chen Wei Xia
Published: March 2011

Environmental risk study is very important because of existence of chemical substance that probably leads to a lot of harm. At present, the environmental risk has become science foundation and one of important basics of the environmental risk management and environmental decision-making.This paper based on the chemical properties of nitromethane including physical and chemical properties, toxicity, explosive harms characteristics are studied and puts forward some preventive measures.
Robust Watermarking Algorithm Based on Time-Frequency CHIRPLET
Authors: Deng Ming Hui , Zeng Qing Shuang , Song Yu
Published: March 2011

In this paper, a robust image watermarking method in two-dimensional time-frequency distributions domain is proposed which is robust against geometric distortion. This watermarking is detected by a linear frequency change. The chirplet transformation is used to detect the watermark. The chirp signals are used as watermarks and this type of signals is resistant to all stationary filtering methods and exhibits geometrical symmetry. In the two-dimensional Radon-Wigner transformation domain, the chirp signals used as watermarks change only its position in space/spatial-frequency distribution, after applying linear geometrical attack, such as scale rotation and cropping. But the two-dimensional Radon-Wigner transformation needs too much difficult computing. So the image is put into a series of 1D signal by choosing scalable local time windows. The watermark embedded in the chirplet transformation domain. The watermark thus generated is invisible and performs well in StirMark test and is robust to geometrical attacks. Compared with other watermarking algorithms, this algorithm is more robust, especially against geometric distortion, while having excellent frequency properties.
The Realization of the IP QoS Based on Network Processor
Authors: Jiao Hong Qiang , Qiao De Jun
Published: March 2011

IP network unprecedented develops in the end of the last century and it evolutes to the next generation network. The network service also presents the characteristics of diversification. Thus the traditional real-time services have not already meet people's need. Algorithms proposed in this paper are developed based on network processor IXP2400 and SDK3.1, and observed on advanced router. Measured results show that, ACL processing module realizes filter and classification functions in the QoS model and meet the requirements filter and classification in QoS system.
The Three Dimensional Numerical Analysis of Consolidation of Rock Mass with Pre-Stressed Anchor Cables
Authors: Wang Zhong Chang
Published: March 2011

A new method of equivalent pre-stress is suggested by used of methods of equivalent strain and temperature according to different working mechanisms between free segment and consolidated segment of anchor cable. The mechanism on reinforcement of pre stress anchor cable is simulated by finite element. It is concluded that the axial stress and displacement of consolidated segment tends to be initiated gets to decrease with the increase of depth. The shear stress of the out end of free segment increases rapidly and arrives at the biggest value, then decreases slowly with the increase of depth. The stress and displacement of rock is distributed in axi-symmetric mode with anchor cables. The concentration zone in shape of a funnel is formed at the out anchor head. The concentration zone in tension is formed at the inner consolidated segment. The surrounding rock at consolidated segment is the interface in shape of paraboloid between the compression zone and tension zone.This document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. The text area for your manuscript must be 17 cm wide and 25 cm high (6.7 and 9.8 inches, resp.). Do not place any text outside this area. Use good quality, white paper of approximately 21 x 29 cm or 8 x 11 inches (please do not change the document setting from A4 to letter). Your manuscript will be reduced by approximately 20% by the publisher. Please keep this in mind when designing your figures and tables etc.
Study on the Image Process of Wheels Based on Machine Vision
Authors: Wang Shi Feng , Li Chang Chun , Yu Jing , Zhang Tian Hou
Published: March 2011

This paper introducted the machine vision technology into the field of wheel suspension coating, used the industrial cameras for the image information of the wheel center and the valve hole, did the edge detection of the valve hole and the wheel based on visual c++ platform ,making the image feature extraction and analysis, thus completing image recognition of the wheel center and the valve hole, realized hang the wheels to the conveyor of automatically.
A Scan-Line-Based Hole Filling Algorithm for Vehicle Recognition
Authors: Wang Wei Qing , Wang Wei Hua , Yan Yu Hua
Published: March 2011

The existence of holes in vehicle object makes it difficult to extract the feature. existing hole-filling method are capable of filling holes on small and smooth regions of a object, for large holes whit complex boundaries or in curved region in vehicle object, they may not obtain the satisfactory results. For resolving this problem, a novel hole-filling algorithm based on horizontal scan line was proposed to fill arbitrary holes in vehicle object obtained from vehicle image. Experiments show that the algorithm has good performance and efficiency, and in the filling processing, the feature of the area and perimeter of an object can be obtained at the same time.
A Hybrid Nested Partitions Algorithm Combing with Genetic Algorithm for Job Shop Flexible Resource Scheduling
Authors: Ding Wan Ning , Jiao Hong Qiang , Chen Zhuo Yi
Published: March 2011

In this paper, we formulate the Job Shop Flexible Resource Scheduling (JSFRS) problem, and presents a hybrid nested partitions algorithm combining genetic algorithm in sampling scheme for the JSFRS problem. The major part of this work is a generic partitioning scheme was implemented and the Resource Allocation Procedure was incorporated into the NP method framework. Simulation results support our theoretical results and illustrate that the hybrid nested partitions algorithm work as designed and the performance improvements associated with flexible resource scheduling are substantial.
The Application of Fuzzy Neural Network in Data Mining
Authors: Tian Wang Lan
Published: March 2011

Fuzzy neural network, which can deal with complex data and prediction process that other algorithms can not accomplish, has become a focus in recent years in many fields. Data mining can extract such information and knowledge as data classification, spatial evolution and prediction and so on, and in the huge cadastral data find the implied information which is helpful for our urban construction.
Stress Distribution in the Cantilevered Single-Lap Adhesive Joint
Authors: He Xiao Cong
Published: March 2011

The aim of this paper is to investigate the effect of bending on the actual stress distribution of a cantilevered single-lap adhesive joint under tension using the 3D FEA method. Five layers of elements were used across the adhesive thickness in order to obtain an accurate indication of the variation of stresses. All the numerical results obtained from the FEA show that the spatial distribution of all components of stress are similar for different interfaces though the stress values are obviously different. The results also show that the maximum value of the stress component S33 is higher than the maximum value of the stress component S11 which would have been expected to be the most dominant since the joint is subjected to tensile loading. The reason for this behaviour is the effect of bending at the bonded section of the joint.
Research on the Text Classification Method with Self-Organization Network Model
Authors: Chen Jian , Jiang Wen Rong , Yan Ji Hong
Published: March 2011

Information retrieval is crucial issue for many areas, like industry, national security, disease control, etc. and how to organize massive information into understandable, readable automatically is a key step to understand data or information. Text Classification is a key issue for automatically text understanding, this paper provides a text classification method based on the SOM neural network model and delivers a reasonable performance.
Mechanical Behavior of Reinforced Concrete Beams Externally Strengthened with Carbon Fiber Sheets
Authors: Li Xiao Yong , Zhang Zhi Gang
Published: March 2011

Externally bonding carbon fiber reinforced polymer sheets with an epoxy resin is an effective technique for strengthening and repairing reinforced concrete beams under flexural loads. In this study, a total of seven reinforced concrete beams was tested and analyzed: two control beam and fourteen beams reinforced with one to six layers of carbon fiber sheets bonded by an inorganic epoxy. All specimens were subjected to a four-point bending test under load control while load, deflection, mid-span strain and failure mode were recorded up to failure. It is found that the load carrying capacity increases with the number of layers of carbon fiber sheet. For one to four layers of carbon fiber polymer reinforcement, the beams failed by rupture of carbon fiber polymer, while beams with five to six layers of fiber reinforced polymer reinforcement failed by carbon fiber polymer delamination. The results of the experimental clearly indicate that significant strengthening of reinforced concrete beams can be realized by bonding small amount carbon fiber reinforced polymer to the beams. The ductility of the carbon fiber polymer strengthened beams is greatly reduced compared to the control beam.
Research of the Chamfer Millers for the Gears
Authors: Liu Hu Ran
Published: March 2011

In order to improve productivity and product quality and reduce cost, over the past many years, producers made great efforts to find the new method of chamfering. One of the methods is the chamfer milling cutter, on the milling machine tool. This method is suited for medium and small batch production. The tool life is long, the machining quality is stable. In this thesis, the principle of meshing between gear and the rake is applied. The chamfer miller design principle and calculation method is put forward.
The Precision Conjugate Theory for the Roller Hourgrass Worm Transmission
Authors: Liu Hu Ran
Published: March 2011

The roller Hourgrass worm transmission has the properties of high efficiency in meshing, high power transmission, large load capability, long working live, and can save nonferrous metal. This paper made deep investigation into the precision conjugate theory for the roller Hourgrass worm transmission. And the forming theory and machining of the worm gear and its cutting tool,---the hob of worm gear, has been researched as well.
The Application of Data Warehouse in Enterprise Resource Planning
Authors: Yang Peng , Zeng Zhe Jun
Published: March 2011

Through building a data warehouse which is used to support manufacturing inventory analysis, according to the analysis theme, this paper extracted, purified and integrated the historical data which is accumulated by the enterprise in a long term and distributed in the various heterogeneous systems, and store them in the data warehouse fact table; through the establishment of the data cube, it generate the aggregated data with different particle size, as well as provide on-line analytical processing technology (OLAP), to provide users data query analysis with multi-angle, multi-granularity, visualization, which can solve many problems difficult to solve in the inventory analysis in traditional enterprise information processing systems.
Mutative Scale Chaos Optimization Algorithm and its Application in PID Controller Design of Mobile Robot Systems
Authors: Chen Wen Bai , Gu Ran , Li Jin Ao , Lu Yu Mei
Published: March 2011

Ergodicity is the outstanding character of chaos system, and chaotic variables can be used to approach global optimal point. Aiming at the control requirements for position and speed of mobile robot, a compact PID controller parameters optimization strategy based on mutative scale chaos optimization algorithm is proposed. The Kinematics model of the soccer robot system is introduced, and the strategy of chaos optimization PID controller parameters is discussed. This optimal solution needs no prior knowledge, searches the whole parameter’s space efficiently and finds the optimal parameter, according to the given performance criteria. Simulation results show that this strategy is feasible and effective.
Cascade Compensation Algorithm for Strapdown Inertial Navigation System
Authors: Zha Feng , Xu Jiang Ning , Hu Bai Qing
Published: March 2011

The cascade compensation algorithm for no damp strapdown inertial navigation system (SINS) is designed based on control model and error characteristic of SINS level-loop. According to stability and frequency characteristic analysis for SINS level-loop, a compensation network, which is chosen to alter either the roots location or the frequency response of the system, is cascaded with the SINS level-loop to damp the oscillatory or accumulated errors. The network parameters are attained by designing the frequency characteristic using frequency domain performance indexes, which are transformed from the expected time domain indexes. The algorithm implementation of the compensator is competed by solving the first-order differential equations set, which is derived from Laplace transform of the compensation network using intermediate variables. Results of digital simulation and test on sea proved that the system attitude accuracy improved 1 order and the system position accuracy improved 1 time when the compensation network was cascaded into SINS.
A Study on Machinability in Turning 1Cr18Ni9Ti Steel under Minimum Quantity Lubrication Machining
Authors: Xia Ru Ting
Published: March 2011

The present study show that metal cutting fluids changes the machinability because of their lubrication and cooling in turning 1Cr18Ni9Ti steel under minimum quantity lubrication (MQL) Machining. The experiments compares the mechanical performance of MQL to completely dry lubrication for the turning of 1Cr18Ni9Ti steel based on experimental measurement of cutting temperature, cutting forces, surface roughness, and dimensional deviation. Results indicated that the use of near dry lubrication leads to lower cutting temperature and cutting force, favorable chip-tool interaction, reduced tool wears, surface roughness, and dimensional deviation.
XPath Query Technology of XML Data Stream Based on Structure Index
Authors: Wei Xian Min
Published: March 2011

Contrary to problem of XPath query processing with a predicate in XML data stream and query optimization, this paper presents the solution of first completing Xpath query structure wizard, and then completing the predicate matching. In order to improve query processing efficiency, this paper proposes with XML document structure information to establish the structure index, with the structure index to pretreat structure wizard part of Xpath query, obtain the structure index of the path matching, then using the structure index of the path matching to process XML data stream, complete matching of XPath query predicate. It has been solved that large XML structure index, Xpath query with the predicate low efficiency, experimental results show that the algorithm can effectively speed up the search and reduce memory consumption.
Forming Analysis and Die Design for the Bending Die for U Type Parts
Authors: Feng Xian Zhang , Wang Dan , Wang Hang
Published: March 2011

In order to design the typical U-bending die, based on analysis the bending process, the die structure for the parts of the arm plate, and consider the factors of springback of bending, tensile, and impact of the clearance between Stamping and female die mould, detailed calculations the key parameters of the expanded length of the bending part, bending force, etc. It can determine the size of the rough and parameters of punch size and press tonnage, and the entire mold were installed and commissioned. The study results showed: The design of the mold has the advantages of simple structure, easy to use, and higher life, and achieve the design goals.
The Multilevel Programming and Solutions of Production Constitution in Oil-Field Development during Mid and Late Part
Authors: Yuan Shi Bao , Jiang Hai Yan
Published: March 2011

During mid and late period in Oil-field development, there is a restriction between the production and the constitution programming of measure type. The Bi-level programming model is built about field production constitution to reflect the hierarchical and relation of the programming process. In the model, the max number of entire oilfield's gross revenue is marked as the objective function of upper formation programming, and measure production from programming is marked as the objective function of lower level programming, and the new oil well quantity,the measure work load and the measure cost are took as constraints. So the solution algorithm that combined with stochastic algorithm and genetic algorithm is designed, and it is verified that the model and algorithm is effective with examples. Now, the problem that is restrictive between oilfield production and the most superior assignment of work load and cost is solved successfully.