bluuebunny/crossref_metadata_2025 huggingface dataset:
Computational Simulation of Multi-Product Flow in an Oil Transportation Pipeline
Authors: Gao Shian , Dennar Chimaobi
Published: June 2014

This paper presents a predictive investigation using Computational Fluid Dynamic (CFD) techniques focusing on the study of contamination that occurs between different products in an oil pipeline under normal operating conditions. The use of CFD techniques yields detailed flow conditions including the velocity fields, phase distribution and interface evolution, which can provide valuable information to the oil industry especially in the distribution of oil products. The Volume of Fluid (VOF) model is used in this project in a pipe with two fluids. Simulation results show the interface evolution between the two fluids and how it is affected by properties such as viscosity ratio and pressure difference. Operational data from the Nigerian National Petroleum Corporation was obtained to validate the results from the simulations.
Application of Horizontal well Multiphase Steady State Flow Model to Evaluate Water Control Effect of ICD
Authors: Liu Yu Fan , Duan Yong Gang , Dai Jie , Zhang Cui , Zhou Xue Mei
Published: June 2014

Because of reservoir heterogeneity around the horizontal section of horizontal well, which makes inflow profile and pressure drop unevenly distributed in horizontal section. It is easy to cause water coning in reservoirs with bottom aquifer and affect the ultimate recovery. With the development of horizontal-well drilling and completion technology, the demand of water control increases step by step. In this paper, we used the node analysis method to establish a wellbore multiphase steady state flow model based on the equivalent filtrational resistance principle, and compared two completions’ water control ability in a case study. Results show that this model can effectively assess the effect of water control in different completion methods, and ICD can give a better water control than slotted liner completion with packer. From our results, we provide a new theoretical reference to a better choice of water-control completion for horizontal wells applications.
Effect of B Refinement on Structure and Fracture Morphology of Al-7 wt.% Si Alloy
Authors: Li Xiao Song , Cai An Hui , Zeng Ji Jie
Published: June 2014

Using optical microscope, electronic tensile testing machine, scanning electron microscopy methods, such as detailed treatment of the B hypoeutectic Al-Si alloy microstructure, mechanical properties and fracture morphology were studied. The results showed that after treatment by the B refinement, α-Al dendrite phase was refined, resulting in mechanical properties of Al-Si alloy significantly improved. Which, B content 0.036wt.%, the alloy the best, the σb, δ, respectively, than the non-thinning increased 67.8% and 15.2%. From the fracture surface, the fracture morphology of the specimen showed a quasi-cleavage fracture. Which, B content 0.036wt.% at the time of fracture is more deep dimples, and a good plastic toughness.
Influence of Heat Treatment on Properties of 2219AA-T6 FSW Joints
Authors: Luo Chuan Hong , Peng Wei Ping , Chen Ting , Dong Fei Bo
Published: June 2014

The joint of 2219-T6 aluminum alloy plate was obtained by friction stir welding, and the microstructures and mechanical properties of the joint were investigated. The causes of the weakened joint strength in friction stir welding were analyzed and summarized correspondingly. The tensile properties show that the transverse tensile strength of the joint can reach about 70% of the base metal. Through the heat treatment of recrystallization with high temperature and at short time, the joint can restore the ductility and eliminate the softening, which will improve the performance in mechanical intensity of the joint.
Mechanical Properties of Tetrazole Polymers
Authors: Castro Rene Alejandro , Lushin Evgeniy N.
Published: June 2014

Low-frequency acoustic method, studies of viscoelastic properties of polymers tetrazolecontaining. It was shown that the introduction of modifiers KCl and KNO3 has a different effect on the dynamic and mechanical characteristics tetrazolecontaining polymers. It is noted that such changes are related to the restructuring of the molecular organization of cross-linked polymers.
Three-Dimensional Ultrafast Laser Micromachining of Silicon for Microsystems
Authors: Babiy Michael , Bystrov Fedor , Biryukova Yuliya , Golik Sergey
Published: June 2014

The result of direct ablation of silicon by an 800 nm Ti:Sa femtosecond laser pulses are presented. The minimum size of the crater on the silica surface ~ 250 nm was obtained, and in the central region of this crater can be identified about 170 nm in depth. In the ablation mode by single pulses received ordered structure with a length of ~ 230 nm and width of ~ 1.8 um and a period of ~ 1 um. Increasing the number of pulses without changing the focus position leads to complex and heterogeneous structure of modifications of silicon.
Facile and Effective Purification of Arc-Discharged Single-Walled Carbon Nanotubes by Centrifugation
Authors: Xiu Shu , Lang Min , Gao Jin Ling , Lian Yong Fu
Published: June 2014

Arc-discharged single-walled carbon nanotubes were purified by successive heating in the air, hydrochloric acid treatment, supersonic dispersion in aqueous sodium deoxycholic acid solution, and high-speed centrifugation. Scanning electron microscopy observation evidenced that amorphous carbon, metal/metal oxide nanoparticles, and non-tube carbon impurities are separated from single-walled carbon nanotubes step by step. The relative carbonaceous purity of the purified single-walled carbon nanotubes to the as-produced materials was estimated to be ~7.42 by solution/dispersion-phase near-IR spectroscopy.
Electrostatic Interaction between Dissimilarly Charged Membranes in Salt-Free Solution
Authors: Chang Shih Hsiang
Published: June 2014

A theoretical study on the electrostatic interaction between the dissimilarly charged membranes in a salt-free solution has been presented in this paper. The results show that the electric double-layer force is always repulsive for positively charged planar surfaces regardless of surface charge density (or potential) and separation; however, a long-range attraction is observed between surfaces with unequally opposite charge densities. Such attractive force also exists and is independent of the separation when both surfaces carry unequally opposite potential.
Studies on Inertial Effect of Transmission Device Components
Authors: Wang Yong Hao
Published: June 2014

The inertial effects of the components in the transmission device have both advantages and disadvantages and can not be unavoidable, it has direct influences on starting, braking, energy consumption and the equipment service life, it is one of the important problems need to be discussed carefully. Using the mechanics principle, this paper analyzed the calculation method of inertial effect in gear, and obtained the torque expression of the different sections in the transmission chain and the power factor of inertia effect, the results of the given numerical example show the correctness of the conclusions/
The Vibration Based on Non-Zero Point Force Moment Elasticity Theory
Authors: Han Wen Ba , Huang Shuang Hua , Liu Jie , Sun Jin Kun
Published: June 2014

The traditional elastic theory believes that there exists normal stress in pure bending body (PBB) and shear stress in pure torsion body (PTB). However, the author proved that there is no normal stress but ‘Bent Point Moment’ (BPM) in PBB. And it also concluded that there is no shear stress but ‘Shear Point Moment’ (SPM) in PTB. This article overturns the preliminary theorems of the Elasticity Theory, which believes that the value of the moment (Bending moment & Torsion moment) on a unit area converges to zero. Just as the completely different natural frequencies of the forced vibration can lead to completely different resonant conditions. Besides, this theory has also been validated in the Damage Mechanics National Key Laboratory of Tsinghua University. Therefore, it is significant to avoid destruction produced by resonance.
The Method of Tension Control with Gravity Balance
Authors: Chen Hong Ren , Yao Y.Y.
Published: June 2014

Carbon fiber is a fiber material, so the tension must be kept constant in the placement process. The attitude of carbon fiber placement head will change with the change of a placement path. Focusing on the problem of tension fluctuation caused by the attitude of carbon fiber placement head, gravity balance characteristic of symmetrical objects is adopted to propose a tension control method for eliminating the tension fluctuation and tension measuring error caused by gravity. In this way, the tension is kept constant depending on tension feedback control. Mathematical model and theoretical analysis show that the tension control method with gravity balance can eliminate the gravity influence on tension and make the tension keep constant.
Finite Element Analysis of Dry Shrinkage of Fiber Cement Mortar
Authors: Xuan Wei Hong , Wang Pan Xiu , Chen Yu Zhi , Chen Xiao Hong
Published: June 2014

The dry shrinkage deformation of polypropylene fiber mortar was analyzed by ANSYS software and compared with experiment value in this paper. The error of the calculated and experimental results in the 14 days and 28 days are 7.8% and 10.5%. It can be found that the calculated results are in good agreement with test results. The results indicate that the dry shrinkage value of polypropylene fiber mortar is lower than ordinary mortar. Adding polypropylene fibers can inhibit the process of cracking and improve the fracture toughness of cement-based materials.
Fatigue Analysis Based on the Non-Zero Point Force Moment Elasticity Theory
Authors: Huang Shuang Hua , Han Wen Ba , Zeng Zhao Rong , Luo Qiang
Published: June 2014

The current theory of elasticity persisted in the standpoint that normal stress exists in pure bending and shearing stress exists in pure torsion, which has been negated by the non-zero point force moment elasticity theory .The mentioned new theory proved that bending point moment exists in pure bending and torsional point moment exists in pure torsion, which debunk the current theory of elasticity that the limit moment acting on the unit area is zero. As a consequence, the causation of fatigue should be revised as point moment instead of stress. By using theory of stress and the new theory to analyze fatigue of non-slender rod, safety factor worked out by the former one is much bigger, which suggests that theory of stress cannot ensure safety. Undoubtedly, that is the fundamental causation of frequent occurrence of fatigue rupture. Thus, the new theory is of great significance in the prevention of unexpected fatigue rupture in the field of aerospace, navigation, transportation and mechanical engineering, etc.
Working Mechanism of Two-Phase Varying Stiffness Piled Raft Foundation
Authors: Huang Yuan , Feng Xin Jian , Zhang Jian Lin , Lin Shu Zhi
Published: June 2014

In this paper, the FEM software ABAQUS is used to analysis the pile-soil load share ratios, load share value of pile side friction and tip resistance for three bases, including natural raft foundation, conventional piled raft foundation and two-phase varying stiffness piled raft foundation. Furthermore, the deformation and settlement of deformation-coordinating device are studied as well. Based on the research of the working characteristic of piles and soil, it highlights the good working mechanism of two-phase varying stiffness piled raft foundation. The analysis results show that two-phase varying stiffness piled raft foundation, with obvious two phase stress characteristics, has a working principle between natural raft foundation and conventional piled raft foundation, fully making use of the bearing capacity of foundation soil, effectively improving the joint bearing capacity of piles and soil.
Simulation Study about Impact of Building Density on Heat Island Effect
Authors: Luo Xiao Yu , Ge Jian , Zhang Yun
Published: June 2014

Along with the rapid development of urbanization, high density city is becoming more and more common. The dense buildings cause the high intensity of heat island effect, resulting in a large amount of energy consumption. In this research the relationship between the heat island effect and the building density has been studied by CFD software with other factors such as the building height and construction shape unchanged. Through a series of simulation and data analysis it is revealed that the effect of building density on the thermal conductivity is obvious. And the study put forward the measure to alleviate the effects of the thermal conductivity by controlling building density in a certain percentage under the premise of maintaining the land use efficiency. This result can provide scientific references for planners, architects, and government management decision makers.
Experimental Verification of Glass-Fibre-Concrete Covers of Footbridge Deck Cornice, Subjected to Wind Loading Actions
Authors: Karmazínová Marcela , Melcher Jindrich , Štrba Michal
Published: June 2014

The paper summarizes the results and evaluation of tests of the resistance of glass-fibre-concrete components used for footbridge deck cover subjected to wind loading actions. The main aims of this research was not only to verify the objective load-carrying capacity and serviceability of covering panels, but also to verify the use of glass-fibre-concrete and its properties, if applied for non-typical product. The tests also show the usage of the unique and effective method of the vacuum loading. The research has been elaborated based on the requirements of DAKO Brno Ltd. Company.
An Implementation of Energy Saving Control Systems with Contactless Programmable and PWM Scheme
Authors: Chen Joy Long Zong , Hsu Yu Cheng
Published: June 2014

The goal of this research is to develop a kind of contactless way to control sustainable energy device power system. The system can match most sustainable energy, such as solar energy or wind power generator. It can automatically switch with the best way to control sustainable energy power system which fit in. On the other hand, because single chip can transfer power instantly to drive device up, like charge smartphone, it is a highly customize device. With the control system, traditional sustainable energy device can work much longer life-time and stable. Through adjustable wireless protocol, PWM (pulse width modulation), low-power multi-purpose regulator circuit and instant feedback display, so it can be optimized most sustainable energy devices. The proposed control system is built by a single chip microcontroller which is serving as the integration of the control core of the circuit, voltage feedback monitor at the same time. In order to improve system performance, the research made for different drive designs to analyze and compare, and simulated calculation and experimented.
The Research for Data Acquisition Technology in High-Speed Cutting Database
Authors: Zhang Yan , Guo Xiao Jun
Published: June 2014

The establishment of high-speed cutting database provides reasonable, optimized high-speed cutting data for mechanical manufacturing industry. It also has important significance for promoting the application and development of high-speed machining technology and improving cutting efficiency and economic benefit. Through combining high-speed cutting database researches. This article focused on analyzing data sources, data mining technology about high-speed cutting database.
A Deformable Spherical Mobile Robot
Authors: Zhan Qiang , Liu Ze Ning
Published: June 2014

This paper presents a deformable spherical mobile robot that can be used in field environment. It can contract to be a small ball when storing and expand to be a hedgehog-like mobile robot when moving so as to employ rotating claws to improve its filed environment adaptability. Based on statics analysis, the factors influencing the performance of the robot are figured out. Its virtual prototype was built in ADAMS in order to validate such performances as linear motion and obstacle crossing motion. Simulation results show its good stability and excellent motion performance.
The Optimal Design of Fuel Cell Bus Power Train
Authors: Shi Hong , Jiang Fa Chao , Zhang Qian , Song Sen Nan
Published: June 2014

The transmission ratio of the fuel cell city bus should meet the requirement of economy and power performance. The transmission ratio and the main decelerator are the key factors to the economy and power performance of the bus. The special operating characteristic curve of motor is a basis to analyze the vehicle`s power and economy performance. Combined with the planned and the provided transmission ratio, the optimal gear ratio of the transmission can be calculated. So the vehicle`s economy and power performance are finally improved.
Embedded Technology Parameter Scheduling Optimization Expert System on the Plastic Extruder Applications in Production
Authors: Li Yang , Wang Yu
Published: June 2014

In this paper, based on the status quo of plastics extrusion production process at the present stage in China, put forward on the basis of general embedded industrial control scheduling expert system for optimizing the process parameters is established. Structures of the expert system, user interface, the establishment of a knowledge base, reasoning machine design, the learning machine design and so on are introduced. System can according to customer's production goal reasoning out the required process parameter values, and has good portability, instead of the professional engineers for plastics extrusion production process parameters manually, save the human cost, improve the intelligent level of automation and production efficiency.
Point Cloud Feature Extraction Based Integrated Positioning Method for Unmanned Vehicle
Authors: Ma Yue , Wei Zheng Chao , Wang Yu
Published: June 2014

The characteristics of unmanned vehicle makes it be used widely in industrial production, space exploration and other fields and unmanned vehicle navigation positioning technology is the most basic aspects. This paper discusses the integrated positioning technology of unmanned vehicle which combines vision sensor with the dead reckoning to achieve precise positioning of the vehicles. By introducing the normal estimated of point cloud, the expected plane feature of point cloud data can be extracted with RANSAC well, which is done with Point Cloud Library (PCL). The effect of unmanned vehicle positioning is also discussed with the plane feature. The corresponding program is applied in the P3-AT Pioneer Robot for validation.
An Active Loop Closure Fast SLAM Method Base on Topology – Section Lines Cascading Map
Authors: Zhang Guo Liang , Xu Jun , Sun Yi Jie , Yao Er Liang
Published: June 2014

Aim to the loop closure problems of mobile robots SLAM, a building mix cascading map approach base on topology-line segment feature is presented, and also an active loop closure Fast SLAM approach is proposed by using segments types of the section lines to form active loop closure tactics. According to topology nodes‘s relationship detect loop closure, and use a reverse movement model for optimization and modification to improve the accuracy and map consistency of robot’s localization. Experiment results show that the approach can well detect loop closure and reduce accumulated errors, and the robot’s localization accuracy and map consistency is remarkably improved.
Study on DC Bias Vibration Signal Separation and Experiment of Transformer Based on FAST-ICA Algorithm
Authors: Yang Yong Ming , Liu Xing Mou , Duan Xu
Published: June 2014

Transformer vibration research is an effective diagnosis of DC bias fault. The vibration signal acquired is actually the mix signal of vibration from both the core and windings, and this makes it difficult to analyze the above two separately. Therefore the paper presents a new approach to separate vibration signal of core and windings by Fast-ICA algorithm. The simulated results of core and windings vibration are given and compared with experiment test. Comparative analysis verify that transformer vibration in no-load is core vibration and vibration in short circuit is windings vibration. Transformer vibration signals under different DC bias are tested by experiment. Vibration signals are separated by Fast-ICA algorithm. Core vibration signal and windings vibration signal are respectively obtained. The research lays the groundwork for further research of transformer DC bias vibration.
Research and Investigation of the BCM Design for PFC Boost Converters
Authors: Wan Qi Ming , Liu Don Gey , Zhou Gui Xian
Published: June 2014

This paper described new working mode of Power Factor Corrector (PFC), called Boundary Continuous Mode (BCM); studied the design parameters of the critical components for the BCM-PFC in the boost topology; proposed a method and a tool for designing an L6562A-based BCM-PFC Boost Converter. The method and tool was verified on an evaluation board emulating a PFC boost converter with an 80W output power, 400Vdc output voltage and a wide range main input from 85Vac to 264Vac; and it can be easily adapted for applications with higher output power around 400W.
An Apparatus Design to Assist Standing Up from Sitting
Authors: Cai Deng Chuan
Published: June 2014

According to the report of WHO, the world population is rapidly ageing. Coming to the year of 2050, the proportion of the older population over 60 years will be 22%. The number of people aged 60 years and over is expected to 2 billion. Standing up movement is an important activity for human, because most activities in daily life are performed with standing position. The elderly with difficulty in standing up movement will strongly affect their daily activities. This study aims to propose an apparatus to assist standing up from sitting. A series of design methods and procedure including concept design, mechanism design, ergonomic design, and appearance design were performed in the study. Finally, an apparatus design was proposed with following features: (1) the appearance of the assistive device designed with an image of appetence; (2) a power-saving mechanism was designed which enabled users to elevate themselves easily; (3) a slow elevating mechanism was designed which enabled users to stand up slowly; (4) the of handlebar was operated at a position at elbow height which enabled users to exert maximum push force; (5) when the device elevated, the users enable to push maximum force to standing up; and (6) when the user was seated or absent for a long period, the handlebar can be located at a noninterference place. The results of design and the methods and procedure used in this study can be a reference for the product design.
Shaft Design Check with AutoCAD-Mechanical
Authors: He Fa Wei
Published: June 2014

When doing mechanical design, in order to ensure proper function of crucial parts, not only should the structure be well-designed, but also should strength and rigidity meet the requirement. However, traditional checking methods contain many procedures and are complicated, which makes mistakes easy to occur; and once it goes wrong in any procedure, the design must be carried out again from the start. So, much time and energy of the designers are wasted on checking, and they can’t focus on the design itself. AutoCAD Mechanical is a version of AutoCAD designed specially for mechanical professionals. It contains all the graphic drawing function of AutoCAD, and with its shaft design function, strength, torsion angle and rigidity checks can be carried out easily. Compared with traditional design method, it has the advantage of simpler operation and full-automatic structuralization. Somehow it is not used by many. Hence, with many years of experiences, the author analyses the design and calculation of shaft parts with AutoCAD Mechanical, in hope to help designers release repeated inefficient work, and raise the quality and efficiency of design.
Foreword
During mechanical design, in order to ensure proper functions and mechanical properties of parts such as shaft, strength check must be carried out. For crucial parts, rigidity and torsion angle checks are also necessary, to ensure the deformations are within allowable range, so as to make sure that the shaft can bear the loads and work properly. However, strength check requires massive knowledge and procedures, as well as complicated calculations, which makes it easy to go wrong. During the calculation, the values of various coefficients should be considered, and once taken improperly, it may lead to vague calculation results, and then the procedure must be carried out again. Undoubtedly, this method makes design efficiency low, and designers must spend much time and concentrations on repeated work, instead of focusing on renovation. However, checking strength of shaft with AutoCAD Mechanical can make the procedures simple and accurate, and raise the efficiency.
Effective Mechanical Behavior of Sandwich Beams under Uncoupled Bending and Torsion Loadings
Authors: Silva Hugo Miguel , de Meireles José Filipe Bizarro
Published: June 2014

Sandwich geometries, mainly panels and beams are widely used in several transportation industries, namely aerospace, aeronautic and automotive. Sandwich geometries are known for their advantages in structural applications: high specific stiffness, low weight, and possibility of design optimization prior to manufacturing. This study aims to know the influence of the number of reinforcements (ribs), and of the thickness on the mechanical behavior of sandwich panels subjected to bending and torsion loads separately. In this study, 3 geometries are compared: simple web-core beam, corrugated core, and honeycomb core. The last 2 are asymmetric, due to the use of odd number of ribs. The influence of the geometry on the results is discussed, by means of a parameter that establishes a relation between the stiffness behavior and the mass of the object. It is shown that the all relations are non-linear, despite the elastic nature of the analysis, by means of the application of loads with low intensity.
The Approachment for Developing a CAD System for Cam Mechanisms of ATC
Authors: Qiu Xiao Li , Sun Gang
Published: June 2014

The motion cycle chart of cam mechanisms of ATC was designed, the contour surface equation of globoidal indexing cam and the roller center trajectory equation of plane groove cam were established. Based on the idea of modular design and the SolidWorks, a CAD system of cam mechanisms of ATC was developed by using SolidWorks API and VC++ 6.0. Then the assembly model was built under the circumstance of SolidWorks directly. Meanwhile, the movement of cam mechanisms was simulated so that the reasonableness of the design was verified.
To Explore the UAV Application in Disaster Prevention and Reduction
Authors: Zhang Wen , Wu Juan
Published: June 2014

The UAV remote sensing is an important way of aerial remote sensing, and increasingly become an important means for spatial data acquisition, which has the advantages of long life time, image real-time transmission, high-risk area detection, low cost, flexibility, is a powerful supplement satellite and aerial remote sensing."Tianyi" series of UAV has a number of intellectual property rights, and repeatedly used in major natural disaster emergency in the country. Has the advantages of small volume, light weight, small target characteristics, the use of fast, flexible, convenient operation and repair, and can be widely used in the field of disaster prevention and mitigation, search rescue, traffic control, resource exploration, land resources monitoring, border patrol, forest fire prevention, crop monitoring, and provides an example of the application.
Refractive Index Sensor Based on Photonic Crystal Fiber Coated with Silver Film
Authors: Wang Min Tuo , Lu Ying , Hao Cong Jing , Yao Jian Quan
Published: June 2014

A silver film-covered photonic crystal fiber containing different sizes of air holes is proposed to construct the surface plasmon resonance sensor. In this sensor, a nanoscale metal film and analyte can be deposited on the outer side of the fiber instead of coating or filling in the holes of the conventional PCF, which make the real time detection with high sensitivity easily to realize. Moreover, it is relatively stable to the changes of the diameter of air holes, which is very beneficial for sensor fabrication and sensing applications. The finite element method is used to analyze the characteristics of the surface plasmon resonance sensor. And the numerical results show that the resonance wavelength is sensitive to the refractive index of liquid, while the resonance wavelength doesn’t change basically when the diameter of air holes vary.
Simulation of Non-Destructive Testing on Weld Surface Crack of Metal Structure by Electromagnetically Stimulated Infrared Thermography
Authors: Liu Zhi Ping , Liu Hui Long , Jiang Lei , Lu Ge
Published: June 2014

With the wider use of metal welded structure in engineering machine, on-line inspection on weld crack is of great significance. This paper reports an emerging nondestructive approach----electromagnetically stimulated infrared thermography technique, for the detection and characterization of surface cracks. According to the electromagnetic thermal coupling analysis theory, different abnormal temperature field distributions caused by various crack dimensions , coil lifting heights, stimulated frequencies and paint film thickness were obtained, via 3D finite element analysis (FEA).The results show that the weld surface crack detectability are greatly influenced by the crack width and the paint layer thickness, with coil life-off height decreasing and electromagnetic excitation frequency increasing, the maximum abnormal temperature difference increases. There is a certain reference value for further research on the design of the electromagnetically stimulated control device.
Combining Expert Strategies in Multimodal Classification
Authors: Peng Jing
Published: June 2014

In multimodal classification, we look for a set of strategies for mining and exploiting the most informative modalities for a given situation. These strategies are computations performed by the algorithms. In this paper, we propose to consider strategies as advice given to an algorithm by “expert.” There can be several classification strategies. Each strategy makes different assumptions regarding the fidelity of a sensor modality and uses different data to arrive at its estimates. Each strategy may place different trust in a sensor at different times, and each may be better in different situations. In this paper, we introduce a novel algorithm for combining expert strategies to achieve robust classification performance in a multimodal setting. We provide experimental results using real world examples to demonstrate the efficacy of the proposed algorithm.
Comparative Study on Zero Forcing Block Linear Equalization for TD-SCDMA
Authors: Sun Yan Dong , Fan Tong Liang , Huang Sheng Bo
Published: June 2014

3G standards such as TD-SCDMA use multi-user detection (MUD) at the base station to combat multi address interference (MAI) and inter-symbol interference (ISI). We review Cholesky factorization and Schur algorithm for Zero Forcing Block Linear Equalization. We compare the solutions of different algorithm for ZF-BLE by computation, and analyze the complexity of those methods.
Compare SM Solver, ANSYS Soft Ware to Analyze Structural Internal Force Bars
Authors: Cheng Li Juan , Yan Xin Chi
Published: June 2014

In order to compare the accuracy of SM Solver, ANSYS software to analyze structural internal force bars,we use SM Solver and ANSYS software modeling steel frame door respectively, and comparing the situation of internal forces of the same type frame for error analysis. The results show that SM Solver and ANSYS software have small error in shear analysis, but the gap is relatively large in moment analysis, and the error is reduced with the increase in the number of dividing cells.
Adaptive Image Generalized Fuzzy Enhancement and Quality Evaluation
Authors: Cui Fa Yi , Ma Lei Lei
Published: June 2014

Before image feature detection and recognition, image enhancement can highlight the main people or things and their details from foreground, and also can suppress the useless information from background effectively. An algorithm model of adaptive image generalized fuzzy enhancement is established. For all aspects of the algorithm model, a variety of computing forms are put forward, and the evaluation standard of image quality is defined. The principle of algorithm is to achieve space transform between image gray space and generalized fuzzy space using generalized membership transform and its adverse transform. In the process of space transform, the contrast among successive region for space of generalized fuzzy membership grade is enhanced by generalized fuzzy enhancement function. Enhanced images are evaluated by quality standard, and the optimal values of adjustable parameters of membership grade transformation function and the fuzzy enhancement function are selected adaptively based on the optimal quality. Then, the enhanced image with best quality can be obtained. Experiments show that the extracted contour of enhanced image is structured, weak-edge-highlighting, and rich-detail.
Influence of Back Support on the Sagittal Plane Biodynamic Response of Seated Human under Vertical Vibration
Authors: Yang Fan , Rakheja Subhash
Published: June 2014

The dynamic responses of the seated body exposed to vertical vibration are investigated at the two driving-points, formed by the upper body-backrest and buttock-pan interfaces in terms of force-motion relationships. The dynamic interactions of the seated body are characterized in the laboratory in terms of apparent masses at the two driving-points under white noise and track-measured random vertical vibration in the 0.5-40 Hz frequency range. The experiments were performed with 24 adult subjects seated on an idealized rigid seat, representing an automotive seat geometry. The vertical and fore-aft forces at the body-pan and body-backrest interfaces were measured to determine the apparent mass responses at the two driving-points. The results clearly revealed significant dynamic interactions of the upper body with the back support. The results also showed considerable influences of the vibration magnitude, body mass and the subjects’ hands position on the measured biodynamic responses.
Fault Diagnosis and Reliability Growth for Information System
Authors: Huang Zhi Hui
Published: June 2014

This paper aiming at the zero-failure data and uncertain-decision problems exist in the information system reliability growth process, it proposes to build the Bayesian network topology of FMEA. It adopts Leaky Noisy-OR model, and it analyses the probability that the subsystem functional module will go wrong in quantity. It solves the problem of identifying the vague and incomplete information exists in the complex system rapidly and accurately, laying the foundation for further study of the reliability growth comprehensive ability assessment of system based on the Bayesian network. In this paper, on the background of Manufacturing Execution Systems (MES) engineering, aimed at research on models and evaluation methods of reliability growth for MES, enclosing reliability of MES task and design target, reliability growth test and analysis methods, it proposes the goal of MES reliability growth planning.
Application of Targeted Consistency-Adjusting Method in Group Decision-Making
Authors: Liao Quan Mi , Wang Chao , Wang Yu , Huang Sheng
Published: June 2014

For multiple attribute group decision-making problems in intuitionistic fuzzy theory, a new targeted consistency-adjusting method is proposed to insure the efficiency and consistency of the decision process as well as preserving the original information of the experts. To reach this goal, the new method modifies the evaluation information of the expert who has large difference with the group evaluation information in the level of attribute which differs from the traditional modification without target. By applying the new method in longitudinal position selection model of engine room in naval ships, the practicality of the method is proved. By contrasting to traditional method, it is indicated that the method adjusts evaluation information with high efficiency and little modification of original information.
A Novel Non-Uniform BTC and its Application
Authors: Wei Yuan , U Kin Tak
Published: June 2014

In this paper, a novel image representation coding based on non-uniform Block Truncation Coding (BTC) is proposed. A given image can automatically be partitioned into different regions with different sizes and the bivariate piecewise polynomials are used to do the Least Square Approximation for the pixel values in each sub-region based on BTC bitmap. When the approximation error and initial partition are specified, a specific image partition result is obtained. The image re-construction quality of the proposed algorithm is better than that of the traditional BTC. Based on this algorithm, an effective denoising scheme of image is implemented and some of the experimental examples are illustrated to prove that the quality of the re-constructed image, the denoising effect are all satisfactory and can be referenced by other researchers.
Probabilistic Teleportation via a Partially Entangled GHZ State being Known by only the Sender
Authors: Xia Li Xin , Liu Run Qin , Zheng Wei
Published: June 2014

In some typical schemes, the receivers must know the information of a non-maximally entangled state for quantum teleportation. In this paper, using a generalized measurement, we propose a scheme of probabilistic teleportation via a quantum GHZ-entangled state, which is known by only the sender.
The Effect of Bioprosthetic Heart Valve with Different Suture Densities
Authors: Zhang Xia , Yuan Quan , Huang Xu
Published: June 2014

This study is to prolong the life of bioprosthetic heart valve. Bioprosthetic heart valve numerical models are established via computer aided design. Stress distribution of bioprosthetic heart valve leaflets with different suture densities are analyzed based on finite element method. The results show that suture density has a significant effect on the dynamic behavior of the bioprosthetic heart valve, which lead to different stress peak values, different stress distributions and deformation. The stress distributions of the cylindrical valve leaflets with different suture density is quite different and the peak von-Mises with 50 suture points is lower than the other three kinds of suture density. This work can be very helpful when manufacturing the bioprosthetic heart valve.
Optimizing Chinese Motorized Transportation Modes to Support Cross-River Public Activities
Authors: Yang Chun Xia , Hu Yan Kang
Published: June 2014

In China, the popularization of motorized transportation has made the contradiction between citizens’ desire to access water and traffic demands in cross-river areas difficult to deal with. Studying on the transportation and space systems from three layers of city across the river, district across the river and bridge across the river, this paper provides several modes of motorized transportation to keep harmony with and give support to the cross-river public activities. The research on the layer of city proposes suggestions on city planning and policies, while research on the layer of district summarizes several strategies on urban design within the cross-river area. The last part of research on the layer of bridge presents modes for reference on the public space on bridge and the connection between bridge and transportation systems.
Analysis on the College Campus of Road Traffic Safety in China
Authors: Chen Qing , Zhou Yan , Bai Dong Dong , Zhang Ming Yu
Published: June 2014

On college campuses, road is important part of activities on campus, and campus planning. This paper in case of Tianjin University of Technology, On the University campus in common of traffic safety issues examined and analysed, mastering different features of the campus and the community, urban transport, based on these characteristics, on the campuses of these problems put forward the corresponding measures. So that people can be comfortable and convenient campus safe arrival.
Optimization of the Automobile Parts Mixed Production Line Based on EM-Plant
Authors: Lin Zheng Ying , Shi Wei Yuan , Zhang Wei
Published: June 2014

The balance of mixed production line is the key issue, which means to adjust the working load to make working hour equal to production TAKT as well as to average the working hour of each station. Firstly, the automobile piston mixed production line system was analyzed by eM-Plant, which was carried out by object-oriented modeling and process-oriented simulation. After evaluating the production line performance, including the utilization rate of equipment and worker, the bottlenecks of the mixed production line were indentified. Finally, the relative measures were put forward to solve it, which makes the enterprise obtains the ability of rapid response to market demands.
Research on Social Profitability Threshold of China Intercity Railway Based on Passenger Demand
Authors: Gan Tian Tian , Wu Ke Qi , Tang Ji Meng
Published: June 2014

The paper discussed the minimum level of passenger demand which could make intercity railway project social profitability in China. The analysis of the costs and benefits linked to other alternative transport modes has been taken into account. The results show that the intercity railway studied is socially profitable with a demand of 4.07 million passengers and a social discount rate of 7%, and the conclusion also applies to other intercity railways in China with similar line conditions and regional economic level.
Real Physical Model Marking Digital Control Experiments
Authors: Yu Ying , Wang Yu , Chen Ming , Zhang Xiao Yang
Published: June 2014

Digital control is an important professional course for most engineering students. This course is not pure theoretical, but practical for its close relationship with practical industrial automation systems design and implementation. Experiment plays an important role in the whole course learning. Most of traditional experiments for digital control are pure simulation. Students cannot grasp knowledge and technical ability in this way. A real physical model is introduced in this paper. How the real physical model experiments was built up and integrated into the digital control course at CDHAW China. The lab architecture, experiments proposed, extending experiments were discussed.
Novel Infrared Stealth Properties of Cotton Fabric with ZnO: (Al, In) Coating
Authors: Yu Xi Li , Zhang Lin Ping , Zhong Yi , Xu Hong , Mao Zhi Ping
Published: June 2014

In this paper, we report a study on the infrared stealth properties of cotton fabrics with ZnO: (Al,In) coating. Al, In doped ZnO samples were prepared through sol-gel method. The crystalline phase of the ZnO: (Al, In) solids were determined by XRD. IR-2 Dual-Band Infrared Emissivity Measuring Instrument was used to test the infrared emissivity of the coated fabric. Infrared stealth effect of ZnO: (Al, In) coated fabric was measured using thermal infrared photospectrometry instrument. It was found that the ZnO: (Al, In) thin film has a low infrared emission in the range of 8 ~ 14μm wavelengths, and the addition of Al and In leaded to a better infrared stealth effect.
One-Step Processing to Fabricate Highly Transparent Superhydrophobic Surface via Granuliform Silica Aerogels
Authors: Xu Bi , Ge Jing Jing , Cai Zai Sheng
Published: June 2014

A simple, versatile method has been developed to fabricate the transparent superhydrophobic surface via granuliform silica aerogels. The effect of ageing on the wettability, microstructure morphology and chemical structure of the dried gels has been investigated. Silica aerogel (dried alcogel with ageing) has a 3D porous network exhibiting the high surface area and pore volume. In comparison, large aggregates of silica nanoparticles exist within the backbone of the silica xerogel (dried alcogel without ageing). Both the aerogel and xerogel exhibit analogous chemical composition with abundant of methyl groups on the surface. The rough surface due to the high porosity and low surface energy provided by the methyl groups of aerogel contribute to the superhydrophobicity. Meanwhile, glass slides coated with aerogel film is highly transparent because the roughness created by the aerogel film is limited.
Analyzing the Corrosion of "Hai Yang Shi You 931" Jack-Up Drilling Unit
Authors: Wang Hong , Zhi Xu
Published: June 2014

Severe corrosion was found on structures and spud leg of "Hai Yang Shi You 931" jack-up drilling unit according to the data of inspection. Some analysis and corrective action was required for Cathodic Protection system. The reason was concluded according to the environmental condition, service life, coating surface area, coating breakdown area, protection surface area and chemical test of anode etc. The electrochemical reaction was rapid suppressed and lost its due utility with the anode was covered by "Sacrifice" product and marine growth. Near the waterline, the oxygen strong bad battery effect was easy to form, and the chance and degree of corrosion occurrence was increased on spud leg.
Corrosion Inhibition of Gemini Surfactant for Copper in 3.5% NaCl
Authors: Cao Kun , Sun Hu Yuan , Hou Bao Rong
Published: June 2014

A new gemini surfactant containing long chain alkyl ammonium headgroups have been used as corrosion inhinbitor for copper in 3.5% NaCl solution. The weight loss and electrochemical methods results showed that presence of inhibitor greatly decrease corrosion rate, gemini surfactant acted as an excellent corrosion inhibitor with inhibition efficiency greater than 96% at an optimum concentration of 30 mg·L-1. X-ray photoelectron spectroscopy reveals that the gemini surfactant molecules adsorb onto the copper surface through the two ammonium head groups (N+).
Effect of Aging Treatment on Phase Transformation of a Pseudoelastic NiTi Alloy
Authors: Muterlle Palloma Viera , Villamarin Eduard Benavides , Herrera Paulo , da Silva Edson Paulo
Published: June 2014

The pseudoelasticity (PE) and shape memory effect (SME) are the two main behaviors presented by the shape memory alloys (SMA's) and are associated respectively to mechanical and thermally induced martensitic transformations. The aim of this work is to investigate the effects of heat treatment temperature on the microstructure properties and phase transformation temperatures of a NiTi alloy with 57 w.t. % Ni. The X-ray diffraction (XRD) was carried out to obtain the phases present. The phase transformation temperatures were measured by differential scanning calorimetry (DSC). The alloy chemical composition and hardness were obtained by X-ray fluorescence (XRF), hardness (HRC) and microhardness (HV) tests, respectively. The analysis were performed in the state as received and after aging treatment at different temperatures between 350 °C and 600°C. The samples as received contained a fully austenitic microstructure at room temperature and the DSC analysis showed the presence of a phase transformation in multiple steps (B19'-R-B2). After aging at 350 °C the R phase was observed at room temperature with the austenite. With the aging treatment at 600 °C the R phase was solubilized and the alloy phase transformation occurred in a single step, ie, direct transformation from austenite to martensite and vice versa. The transformation temperatures Af, As, Ms and Mf changed with the aging treatment temperatures.