bluuebunny/crossref_metadata_2025 huggingface dataset:
Sampling Device for Grain Moisture on-Line Inspection
Authors: Zhang Ye , Li Chang You , Mai Zhi Wei , Xu Li , Xu Feng Ying
Published: March 2012

Concerning the nonuniformity problem when sampling in current single grain moisture on-line inspection devices, this paper designed a new grain sampling device by analysing the physical property parameters of grains. The design of the sampling device is optimized by combining computer mode and physical experiments. In condition of ensuring single grain sampling, fixed the structure parameters of sampling rollers for South grains and North-east grains. The structure parameters of South grain sampling roller groove is length 18mm, width 2.5mm, depth 3mm. The structure parameters of North-east grain sampling roller groove is length 15mm, width 4mm, depth 4mm.
Ballistic Penetration Damage of 2D Basalt Fiber Plain Woven Composite
Authors: Niu Zhi Lin , Jin Li Min , Yu Li Juan , Sun Bao Zhong , Chen Ping , Su Jia Zhi
Published: March 2012

This paper reports the ballistic penetration behavior of 2D basalt fiber plain woven composite (2DPWC). The residual velocity vs. strike velocity curve was recorded. The dissipated energy was also calculated for each strike velocity. Furthermore, the impact damage morphologies of the tested 2DPWC coupons were given to indicate the damage modes and the mechanisms of energy absorption.
Soil-Water Characteristics of Saline Soil in Northwest China
Authors: Zhao Tian Yu , Zhang Hu Yuan , Yu Chen Xiang
Published: March 2012

Geotechnical engineers have become increasingly aware of salt damages caused by water-salt migration.The soil water characteristic curve (SWCC) is a very important tool for determining the engineering properties of unsaturated soil. Using pressure plate extractors, This paper carried out a research on soil-water characteristics of saline soil in northwest China. Then, The relationship between matrix suction and water content was analyzed, the unsaturated hydraulic conductivity in different water content was calculated through predicting model of Van Genuchten(1980). Based on the measurement and calculation, the correlation between unsaturated hydraulic conductivity and water content was established. Research results show that unsaturated hydraulic conductivity of saline soil decreases in non-linear trend with the water content reducing, while it decline linearly by a certain specific rate with the matrix suction increasing at a high-suction section (100kpa ~ 100000kpa) in double logarithmic coordinates.
Adaptive Acceleration Autopilot Design for Terminal Guidance of a Spinning Rocket Projectile
Authors: Zhou Wei , Zhao Liang Yu , Li Ke Yong
Published: March 2012

With extending range of modern unguided rocket projectiles, the dispersion is also becoming larger. An acceleration autopilot during terminal guidance is able to reduce the dispersion, improve the accuracy and comprehensive performance of a spinning rocket projectile. However, an autopilot designed at a given point can not reach good performance because the aerodynamic forces\moments and Mach number vary greatly during the terminal guidance. Via gain scheduling, an adaptive acceleration autopilot of the spinning rocket projectile is designed with considering the coupling of the servo system. The numerical simulations show that this acceleration autopilot is effective and adaptable.
General Structure Configuration and Parametric Design Method of Wind Turbine Tower
Authors: Duan Zhen Yun , Liu Xiao Jiao , Ma Tie Qiang
Published: March 2012

In order to improve the design efficiency of wind turbine tower, a design method which combines configuration and parametric design is proposed, the general structure model of wind turbine tower is given, and the parameter relation model of tower components is established. Based on skeleton and coordinate system coincident method, the automatic assembly of 3D tower model is realized. An automated 3D design software system of wind turbine tower is built by the API of Pro/E. The validity of the system is proved by wind turbine SUT-1500.
Design of High-Performance Lowpass Filter Using Inter-Coupled Compact Microstrip Resonator Cells
Authors: Wu Qing Hua , Li Lin
Published: March 2012

This paper presents a high-performance lowpass filter (LPF) using periodical inter-coupled compact microstrip resonator cells (CMRCs) in series. The CMRC consists of high impedance transmission line and symmetrical T-shaped structure at both sides with ended transmission line arms. By using a bridge structure to introduce controllable inter-coupling between the adjacent tapered CMRC units, the proposed CMRC structure exhibits quasi-elliptic lowpass response with improved stopband performance. Final design of an exemplary LPF using proposed design structure and methodology verify the feasibility of the structure and its high performance including compact structure, low insertion loss, sharp transition and expanded stopband.
Electro-Assisted Photocatalytic Degradation of Methyl Orange on TiO2 Film Using CaСl2 as Electrolyte
Authors: Zhang Wen Jie , Xin Hong Liang , He Hong Bo
Published: March 2012

Porous and smooth TiO2 film electrodes prepared by sol-gel method were used on methyl orange degradation by an electro-assisted photocatalytic degradation process. Methyl orange cannot be degraded under applied potential solely below 2.0 V. When the applied potential was below 1.3 V, methyl orange degradation rates on porous TiO2 film increased from 5% at 0 V to 65.3% at 1.3 V, and degradation rates on smooth TiO2 film changed from 2.2% at 0 V to 61.1% at 1.3 V. Electro-assisted photocatalytic degradation rate on porous film was better than that on smooth film in the whole electrolyte concentration range. Electro-assisted degradation exhibited the same rising trend along with reaction time on the porous and smooth films.
Rheological Study on of PBT with High Melt Flow Index
Authors: Liu Yuan , Wang Lin , Xu Qing Yan , Lin Pei Jie , Guo Zhi Hong , Wang Yan Ping , Wang Yi Min
Published: March 2012

Melt-blown generated PBT nonwoven fabrics usually have small fibril diameter, high flexibility, well heat and oil resistance. Therefore, they would have promising application such as vehicle filtering media. The rheological behavior of PBT with High Melt Flow Index for Melt-blown is investigated in this paper. It is a direction of the technology design and fabrication parameters .The relation of apparent viscosity and shear rate is analyzed, as well as flow activation energy and Non-Newtonian indexes. The results suggest that PBT with High Melt Flow Index is Non-Newtonian fluid. Apparent viscosity and flow activation energy show gradually decrease with increasing shear rate, exhibiting typical shear-thinning behavior.
Pseudopolyrotaxane Structure Constructed by Polycaprolactone (PCL) Grafted on Multi-Walled Carbon Nanotubes and α-Cyclodextrins
Authors: Hu Shuai , Zhou Mi , Kong Song Hua , Qian Xin
Published: March 2012

Abstract The multi-walled carbon nanotubes (MWNTs) are modified through acidification, followed by the graft of polycaprolactone. The supramolecular forces of α-cyclodextrins (α-CDs) and PCL are used to produce MWNTs hybrid materials with pseudopolyrotaxane structure. XRD, FTIR, TGA, DSC are used for the characterization of its product. The preparation of this hybrid material provides a new approach for modifying carbon nanotubes in supramolecular chemistry with the expectation of applying this hybrid materials to the field of biomedicine.
Reduction of SSI by Hydrogen and its Microscopic Morphology
Authors: Li Jun Guo , Tian Wei , Li Shou Zhang
Published: March 2012

Spherical sponge iron (SSI) with high activity and intension possesses potential characteristics to be utilized as wastewater treatment material, such as higher iron content, uniform particle size, higher compressive strength, etc. Observation on apparent morphology of exterior and microscopic morphology of SSI reduced by hydrogen under different temperature was carried on with SEM. When the reductive temperature was relatively lower than T4, the quantities of iron grain in exterior and interior of SSI increased with the increasing of temperature. When the temperature was elevated to T5, the particle size of iron grain was increased, and lots of macro-holes formed, especially in the interior section of SSI. When the temperature was T4, the SSI possesses more favorable ability to remove pollutant from wastewater. Moreover, the iron content in SSI was mostly reach to the summit under this temperature. In summarization, the reduction temperature should be controlled under T4 temperature if the sponge iron was utilized in wastewater treatment.
Thermodynamics of Spherical Sponge Iron Reduced by Hydrogen
Authors: Li Jun Guo , Li Shou Zhang , Tian Wei
Published: March 2012

Spherical sponge iron (SSI) with high activity and intension could be prepared through direct reduction by hydrogen. To optimize the reduction technology, thermodynamics of SSI reduction was investigated. Oxygen residue ratio in SSI declined with the reaction time despite of reaction temperature. It was concluded that SSI reduced by hydrogen appeared to be the first-order reaction, and the apparent reaction rate constant k was 0.289 h-1 to 3.819 h-1. Activity energy of SSI reduction was 22.19 kJ•mol-1 and 81.58 kJ•mol-1 corresponding to the lower temperature and higher temperature. When the temperature was lower than T4, the reaction rate was lower. Consequently, the optimized temperature should be controlled more than T5 to elevate the reduction rate.
Filter Window Characteristics Based Fast Adaptive Median Filter
Authors: Gao Yong Li
Published: March 2012

This paper describes a Filter Window Characteristics based fast adaptive median filter algorithm. Experimental results from the point of view, this adaptive median filter algorithm to determine the degree of pollution on the image to adjust adaptive filtering process, while maintaining the average speed median filter algorithm based on filtering noise effectively, and better protection of the image the edge of the details.
Diffusional Analysis in Al-Ni Cold Rolled Strip during Annealing Process
Authors: Zhu Guo Hui , Sui Feng Li , Chen Qi Wei
Published: March 2012

Diffusion annealing experiments in Al-Ni cold rolled strip was conducted in nitrogen protection. The characterization of diffusion layers between pure Al and pure Ni metals has been analyzed. The analysis results show that the diffusion layers would be composed of solid-solution of Al in Ni marked as Ni (Al), Ni3Al and Ni5Al3 compounds. During diffusion processing, the diffusion speed of Al to Ni was faster than that of Ni to Al. This implied a possibility to form chemical connection of Al-Ni by solid-solution without intermetallic compounds formation to obtain good mechanical and electric properties through optimizing annealing temperature and holding time.
Electrochemical Properties of LiMnPO4 Cathode Material Prepared by Ball-Milling
Authors: Zhong Sheng Kui , Xu Yue Bin , Li Wei , Chen Wei
Published: March 2012

The ball-milling LiMnPO4 powders for lithium-ion batteries were synthesized by high temperature solid-phase method. The effects of ball-milling on the microstructure and electrochemical performance of LiMnPO4 cathode material were investigated. The XRD patterns showed that the LiMnPO4 sample with ball milling 20h had single ordered olivine structure. The SEM images revealed that spherical particles distributed uniformly. The LiMnPO4 powders, of which the initial charge and discharge capacities at 0.05C rate were 133.9 and 66.4mAh•g-1 at 0.05C rate were prepared at 700°C for 20h with ball milling 20h.
The Research on Control Strategy of Worms Spread in Complex Network in Industry
Authors: Yuan Li
Published: March 2012

Internet worms have been a severe threat to the Internet infrastructure and hosts recently. However, because of its outbreak of a sudden and massive make the worm’s research facing enormous challenges. This article describes a simulation system based on NS2 worm - WSS. First, by processing BGP routing table information to the Internet used for simulation of the abstract network, then the model-based epidemiological model of worm propagation, and finally in the two in NS2 combination to achieve the simulation of worm propagation. Experiments show that, WSS can get in a lab environment similar to actual worm outbreak statistics, in understanding the macroscopic behavior of the worm, the worm flow forecasting, transmission speed and damage have a wide range of applications.
The Effect of Fe3Al on the Microstructure and Mechanical Properties of β–Sialon Ceramic
Authors: Sun Xiao Lin , Sun Kang Ning , Du Ming , Li Ai Min
Published: March 2012

Sialon matrix composites were prepared from a reaction mixture of Si3N4, Al2O3 and Y2O3 powders and reinforced with Fe3Al obtained by mechanical alloying, which also can assist sintering at a low temperature. The specimens were sintered by two–step hot pressing and then characterized for phase composition, microstructure and mechanical properties. The effect of the Fe3Al variables on the mechanical properties was studied.
Forecasting of Jiatanchang Bank Collapse in the Three Gorge Reservoir Area
Authors: Zou Lin Lin , Nie Lei , Su Zhan Dong
Published: March 2012

In the reservoir storage and operation process, the geological environment of reservoir bank will change significantly; the changes often cause some geological problems, such as landslide, reconstruction of reservoir bank etc. In this paper, Jiatanchang reservoir has been taken for example, under the premise of engineering geology and stability analysis, Kachugin Method was applied to forecast bank collapse; combining with urban planning and ecological protection, the corresponding protective proposal has been put forward.
Thermal Property Detection and Energy-Saving Analysis of Two Groups of Hollow Blocks
Authors: Li Hui Min , Chen Gang , Chen Xin
Published: March 2012

Following the increasing emphasis on building energy conservation in our country, each city issued a series of building energy-conserving standards, advises, provisions and policys one after the other, the relevant departments pay more and more attention to the wall reformation which supply a broad market to hollow blocks and many kinds of hollow blocks with different structures have spring up. In this thesis , we detective the thermal property of two different kinds of three-row-hole blocks through experiment , analyse the energy conserving index of them and the way of save energy with the experiment result .
Preliminary Analysis on the RCM Technologies Applied in the High-Speed Train
Authors: Wang Gui Guo , An Chao , Tan Li Cheng , Liu Shu Mi , Fu Zhen Liang
Published: March 2012

This paper based on the basic theory of reliability- centered maintenance (RCM) combined with the characteristics of the high speed train products, analysed and elucidated the time and requirements, premise, the content and the output of the RCM analysis that the high-speed train products carry out; put forward the ideas of organization to implement the RCM analysis, which has a great realistic significance on the RCM analysis.
The Research on Logistics System Design and Development of New Formats in Central Zone for Industry Growth
Authors: Yang Hong Xin
Published: March 2012

This paper establishes logistics system in the central economic zone, which make stable development of systematic logistics and format for the central zone, targeted, scientific and operational response options to streamline the logistics industry chain, optimizing logistics resources configuration, reducing logistics operating costs, mining profit source logistics, impedance logistics system risk, thus improving the overall logistics and economic operation quality and efficiency of the optimal policy plan. The results enrich the new form of logistics development theory, decision making for policy makers, and have important application value, significant social and economic benefits.
Bio-Modelling Using Rapid Prototyping by Fused Deposition
Authors: Kumar Y. Ravi
Published: March 2012

This work deals with planning the dental surgery by making bio-model of the jaw of the patient using rapid prototyping (RP) technique called fused deposition modelling (FDM). The bio-model is not only increasing the safety of dental surgery but also aiding diagnosis and treatment planning. Having an exact model of the patient’s jaw in hand would enable a surgeon to plan the surgery more precisely, as compared to one which is planned using 2D images obtained from CT scan, magnetic resonance imaging (MRI) or X-ray. A mock surgery has been performed on the bio-model by making holes using drill bits of the same size and material as the ones used in an actual surgery and after that the implants were placed and screwed into the holes drilled to secure their positions. This drill has been given the surgeon an exact idea of size of the implant and the orientation in which the implant has to be placed and also depth up to which the hole has to be drilled in order to avoid the damage of the Inferior Alveolar Canal.
SCOR Based Food Supply Chain’s Sustainable Performance Evaluation Model
Authors: Kyllönen Hanne , Helo Petri
Published: March 2012

This paper introduces a first level of the SCOR based Food Supply Chain’s Sustainable Performance Evaluation Model and a case study. The model connects environmental performance to the part of the supply chain performance. The aim of the model is to consider ecologic issues as a part of the strategic supply chain decisions and in that way to develop supply chain management more sustainable. The food supply chain’s sustainable performance model consists of the ecological, social, and environmental metrics. It bases e.g. on the level 1 SCOR-metrics. The developed method is used in the case study as a method. The results of the case study shows e.g. that if one production plant would be replaced with two plants the delivery time and delivery costs, waste and carbon dioxide emissions would decrease and production costs and investment costs would increase. The results of the case study show that individual measures of the environmental or economical performance are not enough when optimizing supply chains sustainable performance. Also optimizing production cost or delivery performance may differ from supply chain overall performance. More holistic way to measure overall sustainable performance are needed. The sustainable performance evaluation model seems to be useful way to improve sustainable supply chain management but more studies are needed.
Experimental Study on Performance of Vertical Axis Wind Turbine with NACA 4-Digital Series of Blades
Authors: Hsieh W.C. , Miao J.M. , Lai C.C. , Tai C.S.
Published: March 2012

The experimental studies of output power performances of a vertical-axis-wind-turbine (VAWT) had been conducted in suction-type low speed wind tunnel with various free stream velocity. Torque and rotation speed of blades were measured by using torque meter and optical detector to analyze the effect of blade-section shape on the performance of wind turbine. The test model of experiments in the research was H-rotor VAWT. Three shapes of the NACA 4-digital series blade-section, NACA0022, NACA6404, and NACA6422 were taken in this work. Effects of thickness and camber of blade-section, blade numbers, and blade setting angles on the performance of VAWT have been analyzed in detail. The results show that NACA6422 blade-section has rotation speed of 42% higher than that of NACA0022 when the free stream velocity is below 12 m/s and the blade numbers are 4-blade type. Wind turbines with NACA6422 blades also showed that about 10% higher output power than that of NACA0022 blades among the tested range of free stream velocity. Results indicated that wind turbine with blades of anti-symmetric and thick blade-section was generally more suitable for applying to VAWT. All results of this study can be used the optimization design of VAWT blades in further.
Physical Properties of PP/Recycled PET Blends Prepared by Pulverization Technique
Authors: Potiyaraj Pranut , Tanpichai Supachok , Phanwiroj Prompoom
Published: March 2012

Polymer blends between pristine polypropylene (PP) and post-consumer soft-drink PET bottles (rPET) were prepared using pulverization technique. The polymer mixtures were pulverized, at the amounts of rPET in PP of 0, 10, 15, 20 and 30 phr (parts per hundred of resin) by weight, into powder. In an extruder, the polymer powders were mixed with maleic anhydride-grafted polypropylene (MAPP) and polyethylene wax (PE wax) as a compatibilizer and a processing aid, respectively. The extrudates were prepared into test specimens by injection molding. Physical properties of PP/rPET blends were subsequently investigated. The results pointed out that, for the pulverized blends without compatibilizer, tensile and flexural strength were improved at the lower amount of rPET. The compatibilizing effect of MAPP was exhibited at the higher amount of rPET. The reduction of melt flow index (MFI) may cause difficulties for some processing techniques which required polymers with high MFI. The addition of PE wax successfully brought up the MFI as well as elongation at break while other mechanical properties decreased.
STS Forebody Material Selection Method Using Integrated Aerothermodynamic Optimization Approach
Authors: Sarosh Ali , Yun-Feng Dong , Kamarinchev Dimitar
Published: March 2012

Ceramic matrix composites have been recommended for space applications. Accordingly, in this paper, a material selection method for the forebody of a space transportation system is demonstrated. The methodology is based on mass-model coupled aerothermodynamic design of a highly-integrated forebody-inlet system that uses the multidisciplinary optimization capability of the TIPSO (Two-steps Improved PSO) algorithm. The design optimization and hence material parameters are evolved using the newly developed SHWAMIDOF-FI tool. This paper focuses on validating the selection of carbon composite material by optimizing the configuration parameters for integrating a cone-derived forebody into planar wedge surfaces and an inlet-isolator assembly, so as to form a mixed internal-external compression system. Surface temperature, thermal conductivity, tensile strength and emissivity are used as primary parameters for selection of a forebody material. The optimization results validate that a carbon fibre reinforced carbon and silicon carbide (C/C-SiC) dual matrix composite is best suited for the application
Integration of Simulation Modeling and Comparison of Scheduling Methods to Minimize the Makespan in a Printing Industry
Authors: Govindarajalu V. , Senthil Kumar V.S.
Published: March 2012

This paper considers the problem of scheduling production activities in a real-life printing industry. The problem is modeled as a two-stage flexible flow shop problem with minimization of the makespan and the number of tardy jobs as the objective. Discrete event simulation has been performed using Extend simulation software to depict the real time model of the print industry. The setup time, processing time and completion time of the prioritized customers were obtained and validated with the real time industry inputs. After validation, the output of simulation data has been used to perform preliminary scheduling experiments. This paper deals with the comparison of three scheduling algorithms such as earliest completion time first (ECT), Earliest start time first (EST) and PCmax algorithm for the calculation of maximum occupancy time of various printing jobs. The results obtained using PC max shows the reduced make span of the printing jobs compared to other two algorithms with approximately 12% improvement in minimizing the makespan. Hence the P||Cmax scheduling method can be implemented in the industry to minimize the maximum occupancy time of a particular printing machine. This motivates the actual implementation of the proposed ILP (PCmax scheduling) procedure for the printing industry.
Six Sigma DMAIC Methodology: A Powerful Tool for Improving Business Operations
Authors: Kumar Awadhesh , Sharma Narottam
Published: March 2012

Six Sigma is a popular approach to drive out variability from processes using powerful statistical tools and technique. Six Sigma permits only 3.4 defects per million opportunities. Six Sigma follows basics methodology to improve existing process, i.e. DMAIC. Define, Measure, Analyze, Improve, Control. It is , scientific, systematic and fact based approach. This paper also includes various applications of DMAIC methodology in different business sector like Electronics sector, Chemical and Agriculture manufacturing sector etc.
Analysis of Reverse Logistics Operation Mode for Home Appliance Manufacturing Enterprises
Authors: Chen Ya Ping , Zong Jun Qing , Tang Shi Qiang
Published: March 2012

With the increase of environmental conservation awareness and its relevant legal enforcement, reverse logistics has become an important means for the home appliance manufacturing enterprises to strengthen its competitive advantage. There are mainly three modes for home appliance manufacturing enterprises to implement reverse logistics, i.e., self-managed reverse logistics, co-managed reverse logistics and outsourcing reverse logistics. Different modes exhibit their own characteristics and applicable scopes, home appliance manufacturing enterprises need to choose the proper reverse logistics mode according to their own conditions.
The Research of the Relationship of Cement Slurry Performance Development and Net Early Microscopic Structure
Authors: Zhai Tian Yang , Ding Zhu
Published: March 2012

Use concrete pressure testing machine to test the properties of Cement slurry , and conduct the ASTMC1202 penetration test of the properties and MIP which test the properties and microstructure characteristics. Base on the analysis of the relationship of cement strength and permeability, microstructural features. The results show that, with the increase of the permeability of cement slurry net of intensity decreased by 13%; The increase of pore volume total 11%, and the average pore volume rose 5%, cause pore internal loose, strength fell 0.74%; Cement of a few aperture increase to 7 nm, can lead to internal form lots of pore channels, intensity decreased. when the most several aperture is more than 10 nm, cement strength average less than 41.4 Mpa; Age can effectively passivation cement phase crystallization geometrical shape, and effective crystallization refined grain size.
Methodology for the Objectification of Decisions in the Product Development
Authors: Nehuis Frank , Schmidtchen Kai , Stechert Carsten , Schulze Sven , Vietor Thomas , Dombrowski Uwe
Published: March 2012

In order to develop the best possible product enterprises have to consider multiple solutions during the product engineering process. In early phases of the product development process enterprises generally reduce the number of possible solutions by focusing only on a few solutions to minimize development time and costs. However, in the early phases enterprises are not able to make an objective choice for the best possible product, because of missing information. To evaluate multiple solutions and nevertheless develop a cost effective product the enterprises have the aim to simplify and to objectify the decision process especially in the early phases of the product development process. Therefore the enterprises need a methodology to enable objective decisions.
Gel Oxidation of Titanium and Effect of UV Irradiation on Precipitation of Hydroxyapatite from Simulated Body Fluid
Authors: Abdullah Hasan Zuhudi , Sorrell Charles C.
Published: March 2012

Sodium titanate gels on the surface of titanium metal have been formed using sodium hydroxide solution and oxidised at 400°-800°C. The reaction sequence for these processes with increasing temperature is Ti → sodium titanate gel → crystalline sodium titanate gel → porous (top) and dense (bottom) anatase → porous (top) and dense (bottom) rutile. These samples subsequently were soaked in simulated body fluid in order to study the precipitation of hydroxyapatite in the absence and presence of long UV radiation, which has not been investigated before. One sample showed greatly enhanced hydroxyapatite deposition, this being the one oxidised at 400°C, consisting of small amounts of crystalline sodium titanate and anatase, and subjected to UV irradiation. More generally, enhancement of hydroxyapatite precipitation is observed in the presence of anatase and/or sodium titanate; suppression of hydroxyapatite precipitation is observed in the presence of gels and rutile. However, UV light with anatase enhanced precipitation while UV light with rutile suppressed it. This is attributed to the morphological effect of the larger grain of rutile compared to the smaller anatase.
Inverse Estimation of Viscoelastic Material Properties Based on Particle Swarm Optimization and Neural Network
Authors: Cheng Xing Kai , Chen Ke , Lin Jiang Li
Published: March 2012

The accuracy of inverse estimation for viscoelastic material properties is usually affected by two main factors: mechanical model and the initial value of iterations. In our research, a new method based on artificial neural network and modified particle swarm optimization (PSO) is developed to estimate viscoelastic material properties. The artificial neural network is established to model the behavior of viscoelastic materials which has solved the model-dependent problem; and chaos algorithm is also added to PSO algorithm to improve its local escaping ability which helps us solve the initial-value problem. Feasibility of this method is demonstrated by both data from theoretical formula and FEM simulation experiment.
Estimating and Modeling Uncertainties Affecting Production Throughput Using ARIMA-Multiple Linear Regression
Authors: Azizi Amir , Ali Amir Yazid B. , Ping Loh Wei , Mohammadzadeh Mohsen
Published: March 2012

Throughput of each production stage cannot meet the demand in the real production system because of the disruptions and interruptions of the production line for example break time and scrap. On the other hand, demand changes over time due to volume variation and product redesign as the customers’ needs are changing. This situation leads to planning and controlling under uncertain condition. This paper proposes a hybrid model of autoregressive integrated moving average (ARIMA) and multiple linear regression (MLR) for estimating and modeling the random variables of production line in order to forecast the throughput in presence of production variations and demand fluctuation. The random variables under consideration of this study are demand, break-time, scrap, and lead-time. The random variables are formulated in the MLR model, where the mean absolute percentage of error (MAPE) was 2.53%. Further, nine ARIMA models with different parameters in MLR model are fitted to the data and compared by their MAPE. The best model with the lowest MAPE was when the ARIMA parameters set for p=1, d=0, and q=3. Finally the proposed model using ARIMA-MLR is formulated by MAPE of 1.55%.
Streaming Media Technology in the Fire Communication
Authors: Tang Bin
Published: March 2012

This article describes the real-time transmission of streaming media technology in the Fire Communication. Paper focuses on three important processes of network transmission: socket programming, network communication protocol and buffer control.
Forecasting of Palm Oil Fruit Delivery Quantities Using the Trend Adjusted Exponential Smoothing: A Case Study
Authors: Mohd-Lair Noor Ajian , Kudi Abdul Halim , Chua Bih Lii , Sarbatly Rosalam
Published: March 2012

Palm oil industry has increasingly become the important industry for Malaysia. However, only a limited number of researches have been conducted on improving the palm oil industries. This research attempted to contribute by improving forecast activity along the palm oil industry. Specifically, this research centred on the development of forecast software for a Malaysian based palm oil estate. The developed forecasting software can be used to assist the estate manager in predicting accurately their monthly delivery quantity to the palm oil mill. The forecast technique selected for this research was the trend adjusted exponential smoothing technique. The performance of the trend adjusted exponential smoothing technique based software was then compared to the naïve method. Comparison in the performance indicated that the trend adjusted exponential smoothing produces lower root mean square error, which is equivalent to 14.6% of error produced by the naïve method. This finding emphasises the efficiency of the trend adjusted exponential smoothing in predicting the monthly delivery quantity by the palm oil estate.
Numerical and Experimental Studies of Residual Stresses in Cold Expanded Holes
Authors: Gopalakrishna H.D. , Srinivasa Vinod M.
Published: March 2012

This paper presents the numerical and experimental studies of the residual stresses in Al 2024 T3 specimens due to cold hole expansion (CHE) using ball and taper mandrel techniques. A three dimensional, non-linear finite element analysis has been performed to simulate the CHE process and experiments were conducted to determine the residual stresses due to CHE with 2 - 6 % expansion of holes. The residual stresses were determined experimentally by employing strain gauges around the hole during the expansion. Experimental and Finite Element Analysis (FEA) results showed that the residual stresses increased up to 5 % of hole expansion and decreased further in both the techniques of CHE and the same were greater in case of tapered mandrel than that of ball mandrel method. At the optimum expansion of 5%, the FE predictions and experimental results concurred with each other with a maximum deviation of 2%.
Description and Test of the HFFT Resonant Frequency’s Dynamic Characteristics
Authors: Hu Xiong Xin
Published: March 2012

In this paper, the running stability, the resonant frequency seeking ability of the novel HFFT (High frequency fatigue tester) control system are introduced. Firstly the HFFT control system model is developed. Secondly the HFFT control system dynamic characteristics is simulated and tested, which includes the dynamic load control loop and the frequency locked loop. Finally a experimental result is shown. Compare to the conventional PID control system, the novel tester’s dynamic characteristics are more preferable.
Effects of End-Groups on Properties of Hyperbranched Polyether
Authors: Song Xue Jing , Luo Yun Jun
Published: March 2012

In order to investigate influence of end-groups on thermodynamic property and viscosity of hyperbranched polyether. Three series of hyperbranched polyethers with three different end-groups were studied. These three groups are: hydroxyl, acetate and stearic acid ester. The result confirms the complicated effect of end-groups on properties of hyperbranched polymer. When end-groups change from polar groups of hydroxyl to non-polar groups of acetate, glass transition temperature reduced about 50°C, viscosity reduced sharply too. Glass transition temperature and viscosity all increase with generation rise. When end-groups change from acetate to stearic acid ester, corresponding hyperbranched polyether change from amorphous to crystalline. The crystallization stemmed from long chain structure of end-group, which is easy to form crystalline, its crystalline region molten become main thermodynamic transformation, and obscure the glass transition.
Response of Modified Poly(lactic acid) to Microwave Radiation
Authors: Saengiet Buranin , Koosomsuan Wasin , Paungprasert Phassakarn , Khankrua Rattikarn , Naimlang Sumonman , Seadan Manus , Suttiruengwong Supakij
Published: March 2012

The frozen instant food packaging is the one of disposal product, which produced from petroleum–based plastic and has been accumulated worldwide pressuring on the environment. Therefore, the biodegradable plastics have become key candidates in this application. Poly(lactic acid) (PLA) was regarded as one of the most promising biodegradable polymer due to its good mechanical properties. The aim of this work was to study on the freezability and microwavability of PLA through crosslink reaction. For the improvement of the processibility of PLA, hyperbranched polymer (HBP) and polypropylene glycol (PPG) were used as plasticizer. Then the crosslinking of PLA was introduced by addition of peroxide (Luperox101) and triallyl isocyanurate (TAIC) in an internal mixer. Neat and modified PLA samples were characterized and testing for mechanical properties. From the gel content results, it was showed the increased value with the increased content of TAIC due to the denser crosslinked structure of polymer. This result was confirmed by FT-IR spectra. All modified PLA samples showed the higher %strain at break than neat PLA. In addition, impact resistance in frozen state showed the results of modified PLA with 0.1wt% of peroxide and 0.15 wt% of TAIC, was higher than neat PLA. Moreover, this composition also showed the highest microwave response and heat accumulation was suppressed when the specimen was immersed in the water during the test. From the results obtained in this work, the further investigation is needed to pursue and elucidate the relationship between the polymer structure and heat absorption when materials undergo the microwave radiation.
A Review of Photo Sensor Laser Range Finder Hokuyo URG-04LX-UG01 Applications
Authors: Khalid Hasnan Bin , Luhur Saesar Budi
Published: March 2012

Laser sensor such as laser range finder (LRF) become more and more famous nowadays, many researchers has used, developed and integrate the laser sensor inside their system to achieve their goals. In this paper, we use one of the flagship products of Hokuyo companies, especially their photo sensor/SOKUIKI sensor or known as 2D LRF sensor, a URG-04LX-UG01. Here we review the most recent application on a research work that uses URG-04LX-UG01 since this product launched in 2010. In point of view of interface, sensor combination, environment of use, and functionality of the sensor itself is how we deliver the review. The uniqueness of the application applied is how we assess the research work.
Acoustic Radiation of Axisymmetric Thin Bodies by Integral Variational Method
Authors: Beldi M. , Zarrouk L.
Published: March 2012

In this paper, a variational formulation by integral equations for the study of acoustic radiation by thin axisymmetric bodies is developed. This new approach derives from the three-dimensional variational formulation. It is based on the Fourier decomposition with respect to the angle of revolution. The three-dimensional problem is reduced to the resolution of several two-dimensional problems. Thus, by construction, the obtained axisymmetric variational equation is prepared to the numerical calculations because it avoids the regularisation of the double normal derivative of modal Green’s function. As for the Fourier coefficients of the singular part of Green’s function and its normal derivative, they are evaluated precisely by the same recurrence relation expressed in terms of the complete elliptic integrals. In addition, the axisymmetric free term derived from the 3-D solid angle, is given by a new expression. Numerical results clearly demonstrate the accuracy of this approach to predict the acoustic fields particularly on corners.
Distribution Network Redesign: A Case Study of the Beverage Manufacturing Company in Thailand
Authors: Baramichai Manisra
Published: March 2012

The product distribution is one of the most important functions that directly impact the organizational performance in term of cost and service level. This paper reports the case study from one of the leading company in Thailand to redesign its’ distribution network. Being driven by marketing initiatives, the company would like to operate its’ own distribution centers to instead of relying on wholesalers. In this study, the methodology for redesigning the distribution network is described in details. The distribution network redesign can help the company achieve higher customer service and reduce its’ expense by $290,000 per month
Knowledge Discovery in Plastic Cards Transactions by Using Data Mining
Authors: Saghehei Ehsan , Deljoo Farshad Farahani , Hedayat Mehrdad Hamidi , Khoshjahan Yazdan
Published: March 2012

Today with swift growing of plastic cards industry in the world, variety and volume of data stored in the database is growing strongly, this issue reminds the growing need of banks and financial institutions in applying knowledge discovery processes on value creation services. The original approach of this paper, is step by step implementing process of data mining in real-life transaction of debit cards, with the aim of customer profiling. In this study profiling is applied with two approaches of explorative and predictive analysis. In explorative model SOM and TwoStep clustering techniques are used. Also in predictive model four decision tree techniques are applied, the C5.0, Chi-square Automatics Interaction Detection (CHAID), Quest, classification and regression. Finally, the optimal models details are more analyzed to discover the knowledge in transactions done.
A Study on Ployacryamide Solution Viscosity Analysis at Low Shear Conditions
Authors: Liu Bing Xiao , Chen Ji Mei
Published: March 2012

At present,the most commonly used polymer is partially hydrolyzed ployacryamide in polymer flooding.Moreover the viscosity of PAM solution is the critical factor of influencing sweep efficiency,which affects the oil production significantly.The viscosity of ployacryamide(PAM) solution is measured by CVRO200 rheometer under low shear rate after different shear time.The results show that the viscosity of PAM solution having the same concentration and hydrolysis degree increases with the molecular weight increasing.The viscosity of ionic PAM solution is far more than that of non-ionic PAM in the case of the same mass concentration.The viscosity of PAM solution decreases significantly with the brine salinity increasing,and ionic PAM is influenced much more seriously than the non-ionic PAM.An increase in temperature and the concentration of sodium hydroxide causes a great reduction of the viscosity of PAM solution,and non-ionic surfactant can lower the viscosity of PAM solution,but the impact is not very serious.Moreover the viscosity of PAM solution reduces obviously with the increase of shear rate and shear time.At the same time,the relevant theoretical interpretation is given.All these might serve definite purpose for the study of oil production.
Research on Hardware Security of Embedded System in Cloud Environment
Authors: Li Jing , Zhang Huan Guo , Zhao Bo , Guo Xi , He Fan
Published: March 2012

Cloud computing is an important innovation of current computing models. At present, the research on the security of cloud computing is mainly concentrated on PCs and servers. The security of embedded system in cloud environment does not win enough attention. This paper analysis the security threats of it, and proposes a Secure Hardware Model to provide a tamper-resistant and more reliable hardware embedded platform in cloud environment. Our model adds some new components to traditional embedded system, controls the start sequence of platform’s components, verifies the integrity of crucial information for embedded platform and recovers the system if necessary. Our implementation demonstrates the feasibility of Secure Hardware Model, it enhance the secure and reliable boot of embedded system. With the constant development and application of embedded system in cloud computing field, our research will influence cloud computing greatly.
Research on Predictable Approach to Land Subsidence Based on TIN Model
Authors: Wu Qing Hai
Published: March 2012

The most common predictable approach to land subsidence is to choose, analyze and forecast a representative deformation observation points .If an uneven land subsidence (settlement) comes into being, the settlement rate of deformation observation points will be different. The analysis of the individual subsidence observation points can not reflect the true ground subsidence in the region . Instead, the comprehensive analysis of the information about all the deformation observation points can more objectively reflect the overall settlement of the region. This study makes use of all the observation points to establish a triangular mesh deformation, and uses the superposition of the Terrain surface TIN model and the design surface TIN model to obtain the earthvolume in the two surface triangular elements. Through the earthvolume, the size of the overall settlement of the ground situation can be indirectly reflected in order to adopt appropriate preventive measures . This paper studies the Earthvolume as a research object, employs Gompertz curve model to fit the data and design the forecast model to make accurate assessments.The research shows that this method can reflect the overall total ground settlement,and explore the laws of the land subsidence when an uneven settlement arises.
Total Quality Management for the Audiovisual Broadcasting Systems
Authors: Lascu Cristina Elena
Published: March 2012

This paper presents the principles and the implementation phases of a Total Quality Management in the TV stations, showing at the same time the advantages of this process and its positive effects upon both the broadcasted programs and the amount of the production costs. The subject was approached by the author in her Ph.D. thesis, “The Management of the Audiovisual Communication Systems in Fuzzy Logic”, being an original and personal contribution in the TV management field.
Derivation of Equations and the Heat Distribution Graphs in Vibration Assisted Machining and Comparison with the Conventional Machining
Authors: Nosouhi Reza , Montazerolghaem Hamid
Published: March 2012

The numerical analysis of the cutting zone average temperature and the temperature distribution of the chip and cutting tool are performed in this paper. To derivate the equations, the conditions of both conventional and horizontal vibration assisted machining are analyzed and the results are compared. The previous finite element results along with the experimental results show good agreement with the numerical results achieved from this research and explain the temperature reduction in the cutting zone. The results clearly show that horizontal vibration assisted machining excels the heat distribution in the tool and chip, which justifies the tool wear reduction in this process.
Study on the Spectral Data Processing Method Based on the Transfer Function
Authors: He Fang , Sun Jie , Cao Wei Yu
Published: March 2012

Transfer function is a very important parameter to evaluate the system performance, and it is one of the key methods to process and analyze information. First, the feasibility of this method is analyzed by the theory simulation in this paper. Second, the median is selected to filter the noise in the spectral data by comparing median filtering and Db3 wavelet filtering results. And then, the transfer function method is used on the data processing that captured by a linear CCD spectrometer. The experimental results show that the spectral data processing method base on the transfer function given in this paper is reasonable. This method can further improve the accuracy and the resolution of the instrument, and can make it possible to get a wide application of the CCD spectrometer.
Machinery Fault Detection Using the Wavelet Order Spectrum
Authors: Wang C.C. , Kang Y. , Tu T.Y.
Published: March 2012

The non-stationary signal features are averaged in correspondence with the length of analysis time, thus making it impossible to highlight the signal characteristics and caused the difficulties in identifying or diagnosing faults. In this paper, the wavelet order spectrum method using a combination of wavelet transform (WT) and speed frequency ordering. The feature order does not change with variations in speed, thus can effectively identify non-stationary faults in mechanical equipment. In addition, principal components analysis (PCA) is used to extract the main features of the wavelet order spectrum and reduce the volume of data. This is combined with self-organizing maps (SOM) to devise an artificial intelligence method for fault diagnosis in non-stationary states.