bluuebunny/crossref_metadata_2025 huggingface dataset:
Optical Characterization of Luminescence Polymer Blends Using Tauc/Davis-Mott Model
Authors: Alias Ahmad Nazib , Kudin T.T.I , Zabidi Z.M. , Harun M.K. , Yahya M.Z.A.
Published: March 2012

The optical and electronic structures of poly (N-carbazole) (PVK) blend with poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP) and polyvinylpyrrolidone (PVP) in the same composition were investigated. Polymer coating was carried out using doctor blade technique on a glass substrate. Uv-vis and photoluminescence spectrum revealed that there are significant different results obtained between PVK, PVK:PVP and PVK:PVDF-HFP. The electronic parameters such as absorption edge (Ee), allowed direct bandgap (Ed), allowed indirect bandgap (Ei) and Urbach edge (Eu) were calculated by using Tauc/Davis-Mott Model. The value of Ee and Ed for PVK and PVK:PVDF-HFP almost same but there was significant different value between Eu and Ei.
Synthesis and Antifungal Studies on CuO Nanostructures
Authors: Beevi M. Hussain , Vignesh S. , Pandiyarajan T. , Jegatheesan P. , James R. Arthur , Giridharan N.V. , Karthikeyan B.
Published: March 2012

We report, synthesis and antifungal activities of CuO nanoparticles. Particles are prepared through sol-gel method. X-ray diffraction studies show the particles are monoclinic (crystalline) in nature. Scanning electron microscopic measurements are carried out to understand the morphology of the prepared particles. Energy-dispersive X-ray spectroscopic measurements show that the prepared particles containing Cu and O. To identify the local structure of the particles Fourier transform infra red (FTIR) spectroscopic measurements were carried out showing vibrational bands of Cu-O and O-H band. Anti fungal studies were performed on the set of fungal using disk diffusion method and found that the prepared particles are suitable for antifungal activities.
Eigen Value Analysis of Glass Fiber Reinforced Composite Plate
Authors: Kumar Pramod , Tiwari S.K.
Published: March 2012

Finite element analysis has been used to find out eigen values and mode shape for fiber reinforced composite plates. FRC plates are important structural elements in modern engineering structures. Vibrations of laminated composite plates have been the subject of significant research activities in recent years. Last two decades have witnessed continued development of advanced composite and other high performance aerospace materials with increased specific strength and modulus, longer fatigue life, higher combat survivability etc. Advanced composite laminates extend the possibility of optimal design through the variation of stacking sequence and fiber orientation, known as composite tailoring. The benefits that accrue from this are not attainable without solving the complexities that are introduced by various coupling effects, such as bending–stretching and bending-twisting. Even, as the matrix material is of relatively low shearing stiffness as compared to the fibers, a reliable prediction of frequency response of laminated plates must account for transverse shear deformation. A four noded quadrilateral finite element is considered for the study of frequency response of composite plate. An analytical solution to the boundary value problem of free vibration response of arbitrarily laminated plates subjected to an admissible boundary condition is presented. A rectangular fiber reinforced composite plate is modeled in FEM software (NISA 15) and natural frequencies, mode shapes are obtained and are compared with the available analytical solutions.
Novel Technique of Polymer Composite Preparation for Bone Implants
Authors: Mucha Maria , Tylman Michał
Published: March 2012

Extensive interest in bone tissue engineering focuses on bio-degradable materials based on natural polymers. One of these polymers is chitosan which is deacetylated derivative of chitin. The paper presents preparation of chitosan scaffolds containing collagen and hydroxyapatite by electrolytic method. Chitosan dissolved in acetic acid forms chitosan acetate which is polyelectrolyte (protonated group NH3+). The flow of current through a solution of chitosan acetate causes its reduction and accumulation of chitosan on cathode. Formed structure is highly hydrated porous hydrogel. Hydrogel structure can be coated (in the process of electrodeposition) by nano-silver having a bactericidal effect. Subsequently hydrogel was frozen at -37°C for 24h and freeze-drying. Obtained scaffold has a high porosity (more than 88%) with average pore size of about 0.1-3 μm (micropores) and 0,1- few millimeters (macropores).
Thermoplastic Elastomer Nanocomposites of Polypropylene/Ethylene Octene Copolymer/Carbon Nanotubes
Authors: Chuayjuljit Saowaroj , Rupunt Thitima
Published: March 2012

The focus of this study is to investigate the influences of ethylene octene copolymer (EOC) and carbon nanotubes (CNTs) on the mechanical properties (tensile and flexural properties) and thermal stability of polypropylene (PP)-based thermoplastic elastomer nanocomposites. The PP/EOC blends were prepared at two different weight ratios, 80/20 and 70/30 (w/w) PP/EOC, and each blend was compounded with a very low loading of CNTs (0.5-2 parts by weight per hundred of the PP/EOC resin). Both PP/EOC blends exhibited a higher elongation at break but a lower tensile strength, Young’s modulus and flexural strength as compared with those of the neat PP. However, the addition of CNTs caused a slightly change in the tensile strength and flexural strength but a more significant change in the Young’s modulus and elongation at break. The Young’s modulus and elongation at break of the PP/EOC blends were improved by filling with the appropriate loading of the CNTs. Thus, the combined use of EOC and CNTs can provide the balanced mechanical properties to the PP. Moreover, thermogravimetric analysis showed an improvement in the thermal stability of PP by the presence of both EOC and CNTs.
Flexible Polyurethane Foams Filled with Coconut Coir Fibres and Recycled Tyre - Part II: Compression and Energy Absorption
Authors: Shan Chan Wen , Idris Maizlinda Izwana , Ghazali Imran H.
Published: March 2012

The mechanical properties of flexible PU foams filled with coconut coir fibres and recycled tyre were investigated. The densities of foam composites are slightly increase as 2.5 wt% filler loading to foams. Among all, the highest density value is 54.048 kg/m3 as compared with pure foam which is 52.69kg/m3. In compression test, the compressive response of foam composites was presented in three different regions which are elastic, plateau, and densification. The compressive results show the foams filled with 2.5wt% (50F50P) offered the greatest properties. It shows an increment of 10.784% for compressive modulus whereas an increment of 9.329% for compressive strength as compared with pure PU foam. This result may attribute to its varying cellular structure. The compressive results also indicated that there was no any contribution from tyre particles to the foam’s compressive properties unless it is added as the composition described above. Nevertheless, the results of energy analysis show added fillers can enhanced the foam’s energy absorption characteristic. The energy absorbability is found increased on composite which having good compressive properties as well as having cellular structure of possess smaller cell size.
Synthesis of Al-Fly Ash Composites by Modified Two Step Stir Casting Method
Authors: Shanmughasundaram P. , Subramanian R. , Prabhu G.
Published: March 2012

In the stir casting process, homogeneous dispersion of reinforcing particles within the matrix material is one such major problem, which influences on the properties of composites. In this research, an attempt has been made to study the influence of fly ash wt.% (10 ,15 and 20), ratio of the impeller outer dia to crucible inner dia (0.7,0.5 and 0.3) and processing method (liquid state stirring, two step stirring and modified two step stirring) on the mechanical properties and the distribution of fly ash particles in the Al matrix.Optimum parameters were identified for attaining the maximum mechanical properties such as hardness and tensile strength of composites by the application of Taguchi method, Analysis of Variance (ANOVA) and the results were validated by confirmation test.The present work could provide a guide for the industrial preparation of composites.
The Industry Management System Based on Virtualization and Cloud Computing
Authors: Li Heng , Wang Li Ping , Li Guo Shun , Liu Zhu Xiong
Published: March 2012

This paper proposes a novel architecture of the three-layer cloud. And a practical industrial management system based on virtualization and cloud computing is presented. Since the current industry involves the utilization of various control systems and desktop systems, cloud computing provides us dynamic flexible infrastructure and QoS guaranteed services. With the development of virtualization and cloud computing, how to make the system flexibility and security is very important to industry. The presented system can be used for measuring the consumption of material and energy, monitoring the real-time state of the working environments and optimizing the process parameters.
Influence of Machining Strategies on Surface Roughness in Ball End Milling of Inclined Surfaces
Authors: Shajari S. , Sadeghi M.H. , Hassanpour H. , Jabbaripour B.
Published: March 2012

Inclined surfaces are commonly used in the aerospace and die/mold industries. For machining this kind of surfaces, many aspects have to be considered as machinability considerations including milling strategies, machining parameters and etc. In machining, achieving better quality is challenging task. Various tool-path strategies during milling operation leads to variable surface roughness on machined samples. The objective of this study is to analyze different machining strategies in 3-axis milling of a typical curved geometry part. The machining parameters used in this study, are cutting speed, feedrate and stepover. This paper also presents an approach to develop a mathematical model for measuring Scallop height size and distribution for different machining strategies to show that Scallop height size has direct relation with Surface roughness measurements in each strategy. Finally the optimized strategy based on the results was determined.
The Study of Proper Conditions in Face Milling Palmyra Palm Wood and Coconut Wood Using Design of Experiment
Authors: Rawangwong S. , Chatthong J. , Rodjananugoon J. , Boonchouytan W. , Burapa R.
Published: March 2012

The purpose of this research was to investigate the effects of main factors on the surface roughness in face milling process palmyra palm wood and coconut wood by computer numerical controlled milling machine and using shell end mill cutting tools 6 edges. The main factors including speed, feed rate, depth of cut and angle of cut were investigated for the optimum surface roughness. The result of preliminary trial showed that the depth of cut and the angle of the cut had no effect on surface roughness. It was found from the experiment that the factors affecting surface roughness were feed and speed, with tendency for reduction of roughness value at a lower feed rate and greater cutting speed. Therefore, in the facing process for palmyra palm wood it was possible to determine a face milling condition by means of the equation Ra = 0.954 + 20.4 Feed + 0.00126 Speed. This equation was employed at a limited speed of 800-1200 rpm, and the feed rate of 0.03-0.05 mm/tooth. The result from the experiment of the mean absolute percentage error of the equation of surface roughness is 6.10% which is less than the margin of error, and is acceptable. For coconut wood it was found from the experiment that the factor affecting surface roughness was feed rate and cutting speed, with tendency for reduction of roughness value at lower feed rate and greater cutting speed. Therefore, in the face milling coconut wood it was possible determine a facing condition by means of the equation Ra = 4.72 - 0.000864 Speed + 0.00443 Feed. Leading this equation goes to use is in limitation cutting speed 1000-2000 rpm at feed rate 100-300 mm/min. The result from the experiment of mean absolute percentage error of the equation of surface roughness is 4.64% which is less than the margin of error, and is acceptable. As a result, the selection of optimal machining parameters can be greatly benefited to the Coconut wood furniture manufacturing industry in terms of productivity improvement.
Comparative Study of Platinum/Single Wall Carbon Nanotube versus Platinum/Carbon Black Coating
Authors: Kalnaowakun Phuri , Sutham Niyomwas , Chantaramanee Suchart
Published: March 2012

The study of platinum/carbon black (Pt/CB) versus platinum/single wall carbon nanotubes (Pt/SWCNT) and drying temperature on the result products were investigated. The synthesized of Pt/CB versus Pt/SWCNT were used for coating on fluorine-doped tin oxide (FTO) conductive glasses and tested for electrical conductivity properties used for counter electrode in a dye-sensitized solar cell (DSSC).The result products were characterized in term of chemical composition and microstructure by scanning electron microscope technique (SEM), EDX (JEOL,JSM 5800 LV) and TEM analyses.
Microwave Assisted Ultra Fast Synthesis of 1-D Molybdenum Oxide Nanocrystals: Structural and Electrical Studies
Authors: Chithambararaj A. , Chandra Bose A.
Published: March 2012

Molybdenum oxide (MoO3) is a well known transition metal oxide with multi phase properties that permit novel applications in sensors and batter systems. In this paper, we report a new approach to synthesize meta-stable structured molybdenum oxide (MoO3) by microwave assisted solution precipitation method using a domestic microwave oven. The reaction is carried out in a short period of 5 min. The XRD results confirms that the powder exhibits single phase hexagonal MoO3 with lattice parameter a= 10.53 Å and c = 14.907 Å. SEM images show, the particles are one dimensional (1-D) structure with hexagonal cross section and EDX spectrum confirm that the particles comprise of only molybdenum and oxygen. Further, the thermal and electrical properties are investigated by thermo gravimetric and impedance analysis and the results are discussed.
Experimental Study on Physical Properties of Fired Perforated Brick
Authors: Liu Hong Mei , Yang Heng Liang , Hong Wei Min , Lu Xiao Yan
Published: March 2012

The study on the physical properties of fired perforated brick in Nantong mainly from water absorption, bulk density and compressive strength has been accomplished. The physical properties of fired perforated brick which were manufactured under the different RH (relative air humidity) have been compared, and the analysis of the RH (relative air humidity) influence on the physical properties of fired perforated brick has been concluded. The results showed that, the water absorption and compressive strength of products which have been produced under the condition that the RH was about 50% were higher, but the bulk density was lower.
H∞ Control for Networked Systems with Random Time Delay and Data Packet Dropout
Authors: Wu Li Zhen , Hao Xiao Hong
Published: March 2012

This paper studies the H∞ control problem of networked control systems (NCSs) with random time delay and packet dropout, respectively, for the case that system state is unavailable. The output feedback closed-loop NCS is modeled as a discrete-time switched system. A necessary and sufficient condition is derived for the NCSs ' asymptotic stability based on robust stability techniques, under which the system is exponential stability with a desired H-infinity disturbance attenuation level. The designed output feedback based H∞ controller is obtained by solving a set of linear matrix inequalities. The result illustrate that the effectiveness of the proposed control design and the satisfactory performance of the system.
Electrical Control System Design of Automatic Piston Ring Chamfering Machine
Authors: Liu Zhen Yong , Sun Hong Qiang , Feng Shuan Liang , Yang Mei
Published: March 2012

This paper describes the work Principle of the automatic piston ring chamfering machine，It describes detailed hardware, software design of electrical control system of the machine using MCU，The system realizes functions automaticly such as loading and unloading, piston ring’s plastic, piston ring’s pressure tight, piston ring’s chamfer, stopping short positions alarm, fault alarm, and the communication between the device and host computer.
Model of One-Dimensional Photonic Crystal and Application
Authors: Cui Hou Xiang , Liu Xiao Yan , Yu Wei Dong
Published: March 2012

The concept of photonic crystal and photonic band gap were described in this paper, and the relationship among the transmissivity and wavelength of incident light, layers of thin films, optical thickness of thin films and refractive index of the materials were discussed. A model of the one-dimensional photonic crystal was established by using the transfer matrix method. According to this model, the heat adjustment of room temperature can be realized by using the photonic crystal glass.
A Multilevel Feature Points Detecting Method upon Point-Octree for Point-Based Models
Authors: Jiang Yan , Hou Shu Fan , Lu Yi Nan
Published: March 2012

In this paper, we present a multilevel feature points extracting and displaying method for point-based models to improve the fast detecting of the multilevel feature of large-scale models. Our algorithm is built upon a non uniform partitioning feature point-octree data structure. We adopt covariance analysis method to estimate the surface variation, and feature parameter in local surfaces to describe the feature. The bigger the feature parameter is, the greater likelihood the point becomes a feature point. During the process of building point-octree, feature parameter is related to each LOD node. When displaying, we combin this feature point-octree with an improved particle swarm optimizer (PSO) algorithm to implement multilevel feature fast displaying according to viewpoint and feature level.
Method of Evaluating the Complexity of Geometries for Free-Form Surfaces
Authors: Fan Cheng , Zhao Ji , Zhang Lei , Yuan Jun
Published: March 2012

In order to improve the ability to predict the manufacturability of the free-form surfaces, the complexity of geometries for free-form surfaces is defined and studied. The free-form surfaces are modeled, which is used to calculate the distribution feature values of the surfaces. According to the feature values, free-form surfaces are classified into several clusters based on the fuzzy clustering algorithm. Group patterns are established according to feature values of the samples in the clusters. Then, the method of fuzzy pattern recognition is used to evaluate the surface complexity. The surface samples in the same cluster have close geometry configuration, so they often have similar manufacturing processes. A case study shows that the method can quickly classify the surfaces, largely reflecting the complexity of the free-form surfaces, which can lay the foundation for manufacturability evaluation of the complex surfaces.
Integrated Guidance and Control of Missile Using Subspace Stabilization Method
Authors: Sun Rui Sheng , Liu Peng Yun , Shen Jian Ping
Published: March 2012

Integrated guidance and control law is developed for high-maneuvering missile in order to minimize the uncertain dynamic couple between guidance loop and control loop. After building up the integrated model of guidance and control through combining guidance equations and autopilot equations, this paper puts forward a type of subspace control law with attack-angle tracking by using subspace stabilization control method. Finally, the simulation results by an example, which designs the integrated controller for a terminal guided missile, are presented to reveal that the integrated system has good dynamic-tracking performance.
Method of Assembly Sequence Planning Based on Simulated Evolution Algorithm
Authors: Zhang Jing , Yang Yun Sheng , Feng Shao Wei
Published: March 2012

It is important for assemble industry to generate an optimized assembly sequences. In order to solve this problem, firstly an oriented mating graph model is proposed with the related mating matrix. Therefore an improved simulated evolution algorithm is proposed, which can compute an energy function of the assembly cost associated with the assembly sequence deduced by the graph model. The energy function can be optimized iteratively and perturbed occasionally by the simulated evolution until no further change in the energy occurs. Finally, the validity of the method is proved by a typical case.
Experimental Study of Coupling Fiber-Optic Vibration Sensor Based on Variational Theory
Authors: Ma Bin , Gao Hou Lei
Published: March 2012

According to the character of fiber-optic coupler, its coupling output is sensitive to the variation of coupling region’s length. A new kind of coupling fiber-optic vibration sensor is presented base on this principle. The theory of coupling single-mode fiber-optic sensor is analyzed. A prototype of fiber optic vibration detection system has been successfully built, including a sensor head, a low-cost control unit and a software package for signal processing with high resolution. The response of fiber-optic sensor and piezoelectric sensor to periodic vibration and shock is measured and the results of the coupling fiber-optic vibration sensor are closely in accordance with high precision piezoelectric sensor. The cross-axis anti-disturbance ability of the fiber-optic sensor is discussed in addition. Experimental results indicate that the coupling fiber-optic vibration sensor has favorable vibration detection capability; it can meet the requirement of vibration measurement.
Construction Control Analysis of Large Span Reinforced Concrete Arch Bridge
Authors: Cao Yu , Zheng Yi Feng , Xi Xiao Cong
Published: March 2012

Construction monitoring of reinforced concrete arch bridge mainly include both the linear of structure and structural stress, comprehensive tracking control must be conducted to make smoothly construction of bridge and meet the design requirements. Taking 2# bridge in International Tourism Resort District of Changbai Mountain as the engineering background, according to features of sub-situ construction control of main arch, a reasonable program of construction control is adopted, to ensure that status of structural internal forces meet the design requirements or in a secure area during the construction process or after completion.
An Immune-Based Node Localization Algorithm for WSN
Authors: Zhang Nan , Zhang Jian Hua , Chen Jian Ying , Qu Xiao Mei
Published: March 2012

Node localization technology is the premise and foundation of all applications in wireless sensor network. An improved DV-Hop algorithm was proposed aimed at the low-power requirement of wireless sensor networks. The distances between nodes and anchor nodes were used to calculate the node location in DV-Hop algorithm, and the immune algorithm was used to optimize the estimated location in the third stage of DV-Hop algorithm. The improved algorithm does not require additional hardware devices, and has smaller additional amount of communication and computation.
Ground Penetrating Radar Imaging Based on FDTD Migration Method
Authors: Qin Yao , Wang Qi Fu
Published: March 2012

Estimation the shape and position of the objects is an important subject in ground penetrating radar(GPR). Migration method is popular used in seismic wave detection technology to locate and reshape the objects. Finite difference time domain(FDTD) migration method is widely used not only because the iterative method can save the computer memory but also because it is sensitive with different horizontal velocity and vertical velocity of electromagnetic wave. In this paper, migration imaging principle is been introduced at first, then FDTD migration method is been discussed. By dealing with GPR simulation and experiment image, it shows that the FDTD Migration method used in GPR imaging is effectiveness and stability.
Diagnosis of Incipient Failure of Gearbox Based on Signal Enhancement Technologies
Authors: Wu Chuan Hui , Guo Yu , Liang Yu , Zheng Hua Wen
Published: March 2012

This paper introduces some commonly used methods for gearbox incipient failure diagnosis. Mainly stresses on the combination of autoregressive model filter and minimum entropy deconvolution filter which is sensitive to the impulsive component of vibration signal, as the preprocessing technology. Envelop analysis is then utilized to extract characteristics of gearbox failures. Simulating and real experiments show the effectiveness of this method.
Design and Implementation of Monitoring System Based on MSP430
Authors: Hou Xin , Wei Xing Feng
Published: March 2012

This paper mainly introduces the wireless sensor network monitoring system composed of the nodes and the base station. The software and hardware of this system are analyzed and designed. The MSP430 MCU which is low power consumption is used as a controller chip; meanwhile RF communications chip RF2401L is selected by the monitoring system. This paper elaborates the architecture of the monitoring system, the responsive communication mode between nodes and the base station and the design of the software process.
A High Resolution and Full Information Magnetic Field Measurement System
Authors: Zhang Xiao Bing , Zhou Sui Hua , Wu Zhi Dong
Published: March 2012

According to the development and need of the underwater magnetic field measurement, this paper offers a development method and realizing a process of a full information magnetic field measurement system based on high sensitive magnetoresistive magnetometers of HMC1001&HMC1002. The system includes the magnetic and degree sensors system , data storage module ,the control and data acquisition system. The system’s main features include its high resolution, full information, mass storage , low power and synchronously multichannel A/D. The noise of the system is measured in a magnetic shield canister and the result is 5nT. Performances of the system have been tested in practical and results prove the system meets the need of the actual underwater magnetic field measurement in application.
A Visibility Design Method Based on Virtual Maintenance in Maintainability Design
Authors: Li Ying , Li Yong Xiang , Lv Chuan
Published: March 2012

With the development of virtual maintenance technology, it is achievable to analyze the characters and elements on visibility during maintainability design before equipment manufacturing. After relating maintenance in virtual maintenance environment, a referable visibility design method could be carried out and corresponding suggestion on maintainability design will be given, and detailed information will be illustrated with a disassemble process issue.
An Antisubmarine Detection Method Using IR Spectrometer in Ocean Remote Sensing
Authors: Ke Zhi Wu , Yu Rui , Xiang Rui , Zhang Ke Long , Ma Yong
Published: March 2012

According to the reduction of submarine noise level, Non-acoustics antisubmarine detection method becomes more important for the ocean remote sensing, especially infrared (IR) imaging remote sensing detection method. Conventional IR imaging remote sensing antisubmarine detection is more difficult because modern advanced submarine IR thermal radiance is not obvious. In this paper, our main purpose is to develop the advanced IR imaging remote sensing antisubmarine detection approach by using infrared spectrometer. The IR spectrum information derived from IR spectrometer in sea water and then retrieves the water-leaving spectra by the standard atmospheric correction algorithm. The submarine is detected by analyzing the water-leaving spectrum information. Results of comparisons with conventional IR imaging remote sensing antisubmarine detection, the modified approach is available to estimate the spectrum properties and effective to antisubmarine detection in sea water
An Algorithm for Seeking the Minimal Cost Maximal Flow Based on Petri Net
Authors: Mu Hai Bo , Song Yu Bo
Published: March 2012

In this paper, Petri net is adopted for seeking the minimal cost maximal flow of a network. The cost Petri net is proposed and the enabled rules of transitions are given. In addition, an algorithm for obtaining the minimal cost maximal flow based on cost Petri net is developed. The proposed algorithm, which is different from the others, is to find the firing sequence of transitions by labeling places and increase flows in this sequence. Finally, an example is given to demonstrate the application of the algorithm. The results show that the given method can find the minimal cost maximal flow of a network efficiently.
Dilemmas in Digital Forensics for Computer Equipment Security and Maintenance in Remote Ships
Authors: Chen Hu
Published: March 2012

As remote ships have equipped a large number of computer equipments, the maintenance of such equipments confronts a great challenge. Since some embedded devices among them may be hacked by attackers or disabled by Byzantine failure, to discover the attacking originality and fault source present foremost importance. In this article, we discuss digital investigation and forensics as a general viewpoint. We point out some dilemmas that hinder the development of digital forensics, some of which may be fundamental problems. We propose to expand the concept of digital forensics to a wider scope so as to include digital investigation for information instead of only evidence. We also argue that the fostering of novel contributions should be relied on technical experts instead of law experts as emerging new techniques always result in new digital crimes. We promote the divorce between the technical experts who focus on the contribution of technologies, and legal authorities who are responsible to bridge the gap between technologies and standard/formalization. Digital forensics methods are encouraged to be publicly available, but the contributors should be aware of the possibility of anti-forensics.
A Noninvasive Sound Wave Temperature Measuring System Software Design
Authors: Jiang Pei , He Guang Jin , Dong Li , Xu Jie
Published: March 2012

Through the simple introduction of a sound measuring temperature system, the basic structure of the system composition can be gotten. Then the design of the software is particularly introduced. This paper mainly describes the Site Control Part and Monitoring Center Part of the operation monitoring through the simulation of a set of experimental devices. It describes all the functions of the two parts. What’s more, the software communication protocol, fault analysis and software operational testing program are also briefly introduced in this paper
An Improved Two-Phase GAI Particle Swarm Optimization Data Clustering Algorithm
Authors: Liu Qing Feng
Published: March 2012

The well-known k-means algorithm that has been successfully applied to many practical clustering problems, suffers from several drawbacks due to its choice of initializations. In order to overcome k-means shortcomings, hybrid algorithms involving evolutionary algorithms are a good option for boosting the clustering performance. In this study, a hybrid two-phase algorithm for data clustering is proposed. In the first phase we utilize the new genetically improved PSO algorithm (GAI-PSO) which combines the standard velocity and position update rules of PSOs with the ideas of selection, mutation and crossover from GAs. The GAI-PSO algorithm searches the solution space to find an optimum initial seed for the next phase. The second phase is a local refining stage utilizing the k-means algorithm which can efficiently converge to the optimum solution.
Simulation and Analysis on Pressure Resistance Experiments of Automotive Body
Authors: Zhao Guang Yao , Zhao Yi Feng , Tang Chuan Yin , Du Zhi Yuan
Published: March 2012

Aimed at SUV-type vehicle, simulation and analysis of pressure resistance experiments on the body of automobile has been presented in the paper, according to the vehicle safety regulations and standards of FMVSS216. A limited SUV vehicle model is created; simulation is obtained with the help of software LS-DYNA, based on the principle of finite element analysis method. Assessment of pressure resistance and safety of the automobile has been presented, from the aspect of the deformation of body, the energy absorption of the vehicle and components, and the pressure on the body, etc. By rational improving of the original design of body structure, the reasonable distribution of pressure absorbability of the body of the SUV-type automobile is achieved. The effect of the overall energy absorption of the body is fully exerted, and then the safety of the driver and the passenger in a rollover accident is improved. Research methods and conclusions of this paper provide useful ways and references to the research of the safety of vehicle rollover and design of rationality of body energy absorption
The Building of Accounting Information System Based on REA Model
Authors: Liu Lian Xiang
Published: March 2012

REA model based on accounting information system accounting and business events will organically blend in with the help of advanced computer and Internet technology, change the "accounting information island" situation, the integration of business processes and information processing, the integration of financial information and non-financial information, the integration of accounting and management ,accounting information in order to achieve the business and internal and external supply chain and community collaboration, ultimately upgrade accounting information system for management control system.
Study on Automatic Measurement of Small Angles
Authors: Li Fu Bao , Li Zhong Ke , Li Qin
Published: March 2012

This paper describes the automatic measuring principle of small angles, and through the design of optical structure of automatic measurement of small angle and the design of goniometer circuit, using the laser collimated light source and position of spot detector (PSD), with MCU-controlled A / D and digital display technology, automatic measurement of small angle has been achieved.
The Design of Transmission Line Monitoring System Based on Wireless Sensor Network
Authors: Hou Xin , Kong Yu Jing , Hua Er Tian
Published: March 2012

With the rapid development of the power system, the real-time monitoring of the transmission line state becomes more and more important. Due to the feature of wireless sensor network, a new scheme of monitoring system for transmission line state is proposed. The modular design method is used to choose appropriate modules for setting up the monitoring system, which realizes the real-time temperature, humidity, light, atmospheric pressure on the transmission line. The reliability and practicability is proved by the experiments.
Research on Driving Fatigue Monitoring Based on Tree-Structure Classifier
Authors: Zhang Liang Xiu , Qiu Xu Yun , Guo Rong Chun , Zhang Zhu Lin
Published: March 2012

The driving fatigue monitoring system based on tree structure classifier is presented. The realtime fatigue monitoring system is established by training face and eye tree-structure classifiers which consists of many strong classifiers. Each strong classifier choose several weak classifiers by AdoBoost recursive method and each weak classifier is characterized by single Haar-like features. The whole Tree-structure is constructed by clustering branches recursive algorithm. Experiment has shown that the driving fatigue monitoring system based on tree-structure classifiers is very reliable. Introduction
Thermal Error Modeling and Compensation of a CNC Machining Center
Authors: Han Jian , Wang Li Ping , Yu Lian Qing , Wang Hai Tong
Published: March 2012

Error modeling and compensation is the most effective way to reduce thermal errors. In this paper, a novel approach to predict the thermal error of machine tool based on M-RAN is presented, clustering analysis is used to select the temperature variables, and then an easy and economical measurement system is applied to measure the temperature variables and thermal shift of CNC machining center. The thermally induced errors are estimated in real-time using the trained M-RAN network. The proposed approach is verified through error compensation test.
The Temperature Measurement Method Based on the Image of Mechanical Part during Heating Treatment
Authors: Dong Zhi Feng , Yang Hui Jia , Wang Li Jian , Wang Yu Min
Published: March 2012

The mechanical part was heated to the heat treatment temperature, and the surface color changed with temperature. The infrared radiation thermometer was used to get heating part temperature, and the corresponding color images were taken by the camera at the same time. The program was designed to analyze the images and display the temperature. To decrease the effect of the noise disturbance in the process of image, the combined filter method was used. The relationship between the temperature and image of heating mechanical parts were obtained through digital regression. The analysis and comparison results show that the temperature measurement precision of three primary color is higher than gray’s from 700°C to 1100°C. The three primary colors have more information for image recognition than that of gray image, and are suitable for higher technical requirements.
The Application of Microcontroller Timer/Counter in Speed Measuring/Speed Regulation System
Authors: Jia Shi Sheng , Li Bao Yin , Gao Xue Hui
Published: March 2012

The system, a closed-loop control system which consists of single chip computer, control circuit, frequency converter and motor, can not only measure the motor’s speed, but also can set the motor’s speed conveniently and make the motor run at the set speed at last. There need to be three timers/counters to realize this function. As an enhanced 51 series microcontroller AT89S52, There are three such timers/counters (T0, T1, T2) in it. We can determine the motor’s speed with T2 by installing powerful magnet and Hall sensor on the motor’s axle. The Hall sensor generates a pulse when the motor’s axle turn a round. We can get the motor’s speed by calculating the cycle of the pulse. T1 and T2, as pulse width modulation signal generator, produce the pulse signals. Here T1 determines the cycle, and T0 determines the duty ratio. The duty ratio of pulse signals can be regulated according to the deviation between the real speed and set speed. Then the single chip computer generates corresponding DC voltage, which controls the frequency converter and makes the motor run at the set speed finally. The system can be applied to many field that has special requirements to motor’s speed.
Study on Compensation Based on Neural Network Control of GPC
Authors: Zhang Yue Jing
Published: March 2012

The method to describe the use of neural network nonlinear prediction model is presented in this paper,it works on the nonlinear model and translates it into linearization.The linear model is dealt with by generalize predictive control, and finally the use of the compensation algorithm to linearization bring the model to compensate for the mismatch, it is verified the effectiveness of the algorithm by simulation.
Single-Chip Fuzzy Control of Diesel Engine Electronic Speed Governor
Authors: Zhang Tie Yi , Wei Zhi Kang , Zhou Xiao Rong
Published: March 2012

One kind of new electronic governor is developed on the foundation of the injection pump matched on the YC2118 diesel engine. A single-chip microcomputer is used for core hardware architecture and fuzzy control algorithm for software. The governor has been manufactured out and the test of its performance has been carried on
Research on Thermal Characteristic and Thermal Compensation Technology of Spindle System of CNC Machine Tool
Authors: Sheng Zhong Qi , Liu Chang Chun , Wang Jian Yong , Dong Liang
Published: March 2012

The paper mainly studies the thermal characteristic and methods of thermal compensation of the spindle system of a precision turning center. The three-dimensional model of spindle system is constructed and meshed by ANSYS Workbench. The boundary condition and heat source of the spindle system are computed by relevant theory and the results are applied to the finite element model. By comparing results of FEM and experiment, the boundary condition is adjusted if necessary to make the analysis results be similar to experimental results. Then the temperature field is used as a load to calculate the thermal deformation. Two ways of changing boundary condition of spindle system have been analyzed to find their influence on spindle thermal deformation, which are changing air flowing speed around headstock and setting up a cooling jacket at the front surface of the headstock respectively.
3D Motion Parameters Estimation Using MRF and Neural Network
Authors: Huang Wen Qing , Li Wen Jie , Hu Hai Yan , Wang Ya Ming , Jiang Ming Feng
Published: March 2012

In this paper we use the method of MRF and neural network to solve the problem of parameters estimation in non-rigid 3D movement. Firstly, the method of MRF is used for modeling the local motion correlation of each feature point, and the 3D coordinates of each feature point are obtained. Then the method of neural network is used for clustering the feature points according to their motion situation. When the neural network reaches stabilization, we can get the motion parameters of each feature point. Finally, we correct the neighborhoods of each feature point according to motion parameters. The experimental results show that our algorithm can correctly estimate the non-rigid motion parameters.
Research on New Mechanical Seismic Simulation Platform Exciter
Authors: Zhang Tie Yi , Zhang Yun , Zhou Xiao Rong
Published: March 2012

According to the functional requirements of mechanical seismic simulation platform exciter, a new exciter with dual driven slider-crank mechanism is designed to achieve stepless amplitude adjustment and multi-frequency vibration output. Based on the ADAMS simulation software, design features of mechanical seismic simulation platform exciter are verified.
Speech Enhancement System Based on Lyapunov FXLMS Algorithm
Authors: Wu Cai Yun
Published: March 2012

This paper studies the speech enhancement technology. A Lyapunov function of the tracking error systems is defined, and the adaptive filter based on FXLMS algorithm can make the error converge to zero asymptotically. It is shown to be suitable to solve the problem of the speech enhancement from computer simulations
TSP24 System and Application in Construction of a Highway Tunnel
Authors: Huang Jun , Zhang Ding Li , Huang Hao
Published: March 2012

Tunnel geological environment has the characteristics such as complexity, uncertainty, variability and so on, How to improve the accuracy of tunnel geological advance forecast, guiding the safe construction of tunnel, are always as one of the hot topics on Geotechnical engineering study. This paper introduces the principles, methods and characteristics of a tunnel seismic prediction system (TSP24 system) that newly developed in China, through a successful application on highway tunnel geological forecast, which has verified the accuracy, reliability and economy of this system. The research results can provide reference for other similar projects..
Analysis of Water Jet Trajectory of Auto-Targeting Fire Sprinkler System in Interior Large Space
Authors: Long Ming , Hu Guo Liang , Li Zhong
Published: March 2012

Auto-targeting fire sprinkler system is an intelligent fire extinguishing equipment that used in interior large space. An auto-targeting fire sprinkler system was designed; the compositions and working principle were also expounded in detail. The water trajectory equation was deduced and simulated by Matlab software according to the principle of particle kinematics, ballistics, and fluid mechanics. The relationship among working pressure, pitch angle, installation height and jet range, flow landing speed was analyzed. The results show that the fire sprinkler system can satisfy the design requirements, and the water trajectory equation basically concides with the actual situation, which can provide some theoretical references for the fire precision location.
The Design and Test for the Intermittent Work-Style Drying System
Authors: Chen Lin , Tai Xue Song
Published: March 2012

In order to improve the quality of microwave drying, we propose the microwave drying temperature control system which consists of microcontroller (AT89S52), temperature sensors (DS18b20) and other electronic components. The system can monitor the real-time temperature of the drying chamber and can control the drying process automatically , let the temperature cannot out of the permitted range(control the extent permitted automatically), these processes ensure the quality of the dried crop. The results shows that crops using the system are better than those that not used（using）. These tests proved (prove) that the microwave temperature control system can achieve its designed function.
Research on Navigable Width in Winding Channel
Authors: Ding Tian Ming , Qi Jian Xiang , Ai Wan Zheng
Published: March 2012

When ship navigating in the winding channel, a transverse drifting distance will be produced due to some dynamic factors, such as wind and current; meanwhile, the rudder must be frequently used to alter course so that the vessel can be navigated safely in the channel. Because of the above reasons, the width of the water area that is need to carry out altering course maneuvering is greater than that is needed to navigate straightly. Giving full consideration of drifting due to wind and current, the value of widened channel when altering course in winding channel, this paper puts forward the mathematical model for width in winding channel.
A Modification of Newton-Type Method with Sixth-Order Convergence for Solving Nonlinear Equations
Authors: Chen Rui , Fang Liang
Published: March 2012

In this paper, we present and analyze a modified Newton-type method with oder of convergence six for solving nonlinear equations. The method is free from second derivatives. It requires three evaluations of the functions and two evaluations of derivatives in each step. Therefore the efficiency index of the presented method is 1.431 which is better than that of classical Newton’s method 1.414. Some numerical results illustrate that the proposed method is more efficient and performs better than classical Newton's method
A Improved Method of Enhancement of Video Image in the Coal Mine
Authors: Zhao Meng Ling
Published: March 2012

Insufficient space and poor light down the coal mine resulted in many problems to the image on the monitor screen. In view of the problem of low resolution, unclear gradation, roughness and easy to interfere in the transmission process in bad communication environment, According to the characteristics of the image, researched to use the method of combining the algorithm of improving the traditional filter with the enhancement of contrast ratio to improve image. The experimental results indicate the method can make the underground video image quality improved and is a feasible method.
A Transformation Method between PLC Ladder Diagrams and Instruction Lists Using Recursive and Stack Algorithms
Authors: Zhang Zhi Sheng , Li Cheng , Zhou Yi Fan , Liu Wen Dong
Published: March 2012

The method of transforming a ladder diagram (LD) and an instruction list (IL) of PLC (Programmable Logic Controller) to each other is investigated in this paper. Firstly, ladder-step is adopted on transforming LD into IL. Ladder-step is divided series or parallel by using recursive algorithm, and then complicated ladder-step can be divided into several simple ladder-steps which can be converted to IL easily. When obtaining simple ladder-steps’ IL, combining them together to get final IL program of complicated LD program. Secondly, on transforming IL into LD, stack algorithm contributes a lot. Scanning IL to generate LD of each instruction block, and then pushing them into stack. Combine LDs in the stack by operating instruction, and then IL is transformed into LD successfully. Finally, in the last part of this paper, we show our PLC software and lower position machine. In addition, this transforming algorithm has already applied in PLC software successfully.