bluuebunny/crossref_metadata_2025 huggingface dataset:
Le compoix de Lodève de 1401 à l'épreuve de la cartographie. (Représentation spatiale des activités économiques et de la propriété foncière)
Authors: Demaille Emmanuelle
Published: August 2013

The study of " compoix", fiscal registers used to establish the direct tax base in real size countries, is currently benefiting from progress in data processing, with database software packages that are very useful in processing the serial information contained in those documents. This article proposes a both methodological and interpretative study of the " compoix" of Lodève in 1401. As a first step, the steps of the elaboration of the database and cartographic media are presented, with an interpretation of the results. After confirmation of the difficulty of a demographic study of the population of Lodève, it is possible to appreciate the utility of this type of document for any study of medieval urban geography. In addition, the " compoix" provide an approach to the geographic distribution of economic activities and landed property, with emphasis being placed on ecclesiastical patrimonies. The urban and peri-urban area of Lodève in the 15th century is an area based on the economic plan and an area shared according to seigneurial rights.
Safety of Granulocyte Colony-Stimulating Factor (G-CSF) Administration for Postrehabilitated Motor Complete Spinal Cord Injury Patients: An Open-Label, Phase I Study
Authors: Derakhshanrad Nazi , Saberi Hooshang , Yekaninejad Mir Saeed , Eskandari Ghazale , Mardani Azam , Rahdari Fereshte , Meybodi Keyvan Tayebi
Published: August 2013

Granulocyte colony-stimulating factor (G-CSF) is a major growth factor in the activation and differentiation of granulocytes. This cytokine has been widely and safely employed in different conditions over many years. In this translational study, G-CSF is administered to 19 patients with chronic motor complete spinal cord injury, and outcomes are reported. All 19 patients received subcutaneous G-CSF (5 μg/kg per day) for 5 days and were followed for at least 6 months. The American Spinal Injury Association (ASIA) scale was used for motor and sensory assessment, and the International Association of Neurorestoratology-Spinal Cord Injury Functional Rating Scale (IANR-SCIFRS) and the Spinal Cord Independence Measure (SCIM) III were used to assess improvements in the ability to perform basic daily tasks. At the 6-month follow-up, upper extremity motor scores improved by 10, which was statistically significant ( p = 0.007), whereas there were no significant changes in lower extremity motor scores. Also, the median of light touch sensory scores improved by 5 ( p = 0.001). Pinprick sensory scores significantly improved ( p = 0.002). The median increment in SCIM III total score was 7 ( p = 0.001). The improvements in bladder and bowel management as well as moderate distance mobility subscales were also significant ( p < 0.05). Total IANR-SCIFRS scores changed from 17 to 32, which was statistically significant ( p = 0.001); again the bladder and bowel management subscale improvements were statistically significant ( p < 0.05). Mild side effects of the G-CSF treatment such as bone pain, rash, fever, neuropathic pain, and spasticity were noted in a few patients; all of them resolved after 1 week. Our results indicate that G-CSF administration is a safe process and is associated with neurological as well as functional improvement. This manuscript is published as part of the International Association of Neurorestoratology (IANR) supplement issue of Cell Transplantation.
Learning Sports Management with e-Learning
Authors: Redondo Sara , Villalba Ana María , Merino Jiménez Álvaro
Published: August 2013

Nowadays, hybridity is in demand from students in university degrees. They expect to be able to choose between on campus courses and online courses depending on their needs and wishes. Motivated by this, since academic year 2010-2011, the Universidad Europea de Madrid offers some of its traditional on campus undergraduate and graduate programs also in an on line format, under the concept of Universidad Personal. One of these programs, the MBA Masterâ??s Degree in Sports Management, was selected as the runner-up in the e-learning category of the 2012 International E-Learning Award (Academic Division), given by the International E-Learning Association. The purpose of this paper is to describe in more detail the objective and structure of this program, as well as the pedagogical and product model in which is based on, showing the different elements used for its design.
Towards an Implementation of the Concepts of E-Learning 2.5 Through one Group of Ten Masterâ??s Learners: Case of the UML Course
Authors: Sbihi Boubker , El Kadiri Kamal Eddine , Aknin Noura
Published: August 2013

The aim of our article is to apply the concepts of the E-learning 2.5 in a group of ten Masterâ??s students during the UML course in the I-School of Rabat, Morocco. This survey generated interesting results on the collaborative approach during the UML course. Indeed, 50% of the students find the learning method very satisfactory and 40% satisfactory. Learners are also satisfied with the content published on the class wiki since 50% is very satisfied and 30% is satisfied. This very promising and flexible approach in time and cost can complete or replace traditional learning of a small group of learners. It adds the possibilities of self-evaluation compared to the E-learning 2.0 opportunities and therefore proposes a simple, collaborative, constructive and measurable e-learning which covers a wide public composed mainly of the younger generations.
Context Analysis of User Decision based on social learning
Authors: Lee B.Z. , Lu H.Y. , Ma S.H. , Song X.P.
Published: August 2013

We analyzed the context mechanism of usersâ?? decision behaviors in social tagging, and revealed the nature of social learning among users in social contexts. To improve the results of social tagging, we can select corresponding contexts according to usersâ?? given knowledge backgrounds and preferences. On the other hand, we can also recognize usersâ?? knowledge backgrounds and preferences according to their annotation results in relevant contexts.
Inorganic Nanoparticles Modified Molecular Beacons as Fluorescent DNA Biosensors
Authors: Song Meng Meng , Guo Wen Juan , Dai Zhao , Qiu Kai Li , Wei Jun Fu
Published: August 2013

This study reports inorganic nanoparticles modified molecular beacons as fluorescent DNA biosensors. MBs were modified by using CdTe quantum dots as energy donors and 4-(4'-(dimethylamino) phenylazo) benzoic acid, black hole quencher 1 and Au nanoparticles as energy acceptors, respectively. CdTe quantum dots were linked to molecular beacons when 1-ethyl-3-(3-dimethylaminopropyl) carbodi-imide hydrochloride was added. The fluorescence intensity of the modified molecular beacons decreased tremendously compared to the fluorescence intensity of CdTe quantum dots, which indicated that the fluorescence resonance energy transfer occurred between the donors and acceptors. The results indicated that this type of molecular beacons has high specificity and can be used to distinguish complementary DNA and its mutants.
Development and Application of New Design Method by High-Strength Composite Material - Fusing of Optimum Strength Evaluation and Product Design
Authors: Iida Haruhiko , Sakamoto Hidetoshi , Ohbuchi Yoshifumi
Published: August 2013

The purpose of this research is the development of new design method for integrating the optimum strength evaluation and the product design which can make the best use of material's characteristics obtained by the experiment and the analysis. Further we do design using high-strength composite material with this developed concept which is different from conventional design. First, to establish this design method of high-strength materials, we examined these materials characteristics and manufacturing methods and the commercialized products. As this research target material, we focus the fiber reinforced materials such as composite with carbon fiber, glass fiber and aramid fiber. Above all, we marked the carbon fiber which has the high specific tensile strength, wear resistance, heat conductivity and conductance. Here, we introduce the fundamental design concept which makes the best use of the design with enough strength.
Energy Savings through Integration of the Illumination Natural and Artificial, Using a System of Automatic Dimming: Case Study
Authors: Milone Daniele , Pitruzzella Salvatore , Franzitta Vincenzo , Viola Alessia , Trapanese Marco
Published: August 2013

The reduction of electrical energy consumption in buildings is a subject of great interest in the international scientific community. In buildings with a lot of available natural light, designed with large glazed surfaces, the artificial lighting system is often oversized and cannot be divided into segments to meet lighting demands during daylight hours.This article presents an experimental study, conducted in a university lecture hall that has a glazed surface covering the whole wall at one end, which provides a level of internal illumination that is only sufficient for the area next to the window itself, even when the outside lighting conditions are very bright. It is therefore necessary to turn on the artificial lighting system.The mathematical approach used in this paper has been successfully applied by the authors in other fields of science [1-2].Using an automatic dimmer system, the calibration of which is based on experimental measurements, the lighting is arranged in such a way as to illuminate the most disadvantaged areas of the room, and then to extend itself gradually to the whole of the room, over the period of time that the lecture hall is in use.
Sensitivity of the CFD Mesh for a Single Rising Bubble in a Hallimond Tube
Authors: Azmi Ashraf , Balasubramanian Periyasamy , Abdullah Bawadi , Zhalehrajabi Ehsan
Published: August 2013

This paper presents how a single rising bubble experiment in the Hallimond Tube (HT) can be predicted using a computational fluid dynamics model (CFD). The study is emphasized on the effect of CFD Mesh to the pressure coefficient and axial velocity around the bubble. A rigid sphere with the radius of 0.00575 m using flow velocity of 0.0067 m/s was considered in this study. Experimental and simulated data obtained by other researchers in the similar study were used to validate the simulation results from the computational fluid dynamics model.
Investigation of Performance of Heating and Cooling of Counter Flow Ranque-Hilsch Tubes with L/D=15, 16, 17, 18 for Brass
Authors: Dincer Kevser , Berber Adnan , Ozen Dilek Nur
Published: August 2013

In this study, heating and cooling performances of counter flow Ranque-Hilsch vortex tubes (RHVTs) were experimentally investigated for brass. The vortex tubes were made of brass. Diameter of vortex tube (D) was 10 mm. Length of vortex tube (L) was 15D, 16D, 17D and18D. The number of nozzles (Nn) was 5. The conical edges of the plugs have a slope of 30o angle. Working pressure of Ranque-Hilsch was 460 kPa (absolute). According to the experimental results, the maximum heating performance of the RHVT system was found to be 39,5 °C at P17 and the maximum cooling performance of the RHVT in this study was found to be-28,6 °C at P18. An increase in fraction of cold flow (ξ) led to a increase in the heating performance.
Tool Vibration due to High Speed Micro End Milling Parameters
Authors: Mohamed Abdul Rahman , Atiqah Nur , Ali Mohammad Yeakub , Chowdhury M.S.H.
Published: August 2013

This paper presents the effect of high speed micro end milling parameters on tool vibration during machining of poly (methyl methacrylate) (PMMA). The main focus is to achieve minimum tool vibration by controlling the cutting parameters; spindle speed, feed rate and depth of cut. An empirical model for tool vibration has been developed using Taguchi method. The orthogonal array, signal-to-noise ratio and analysis of variance revealed that high spindle speed is the most influential parameter to increase the level of tool vibration.
Characterization of Forsterite Synthesized by Solid-State Reaction with Ball Milling Method
Authors: Chin K.M. Christopher , Lee K.Y. Sara , Tan C.Y. , Singh Ramesh , Teng W.D.
Published: August 2013

Talc and magnesium oxide are used to prepare forsterite (Mg2SiO4) powder by solid-state reaction with ball milling method. The samples were sintered at temperature 1200°C, 1300°C, 1400°C and 1500°C with four different holding time duration 2 hours, 1 hour and 1 minute with ramp rate of 10°C/min respectively via conventional pressureless sintering method. 3 hours ball milling is sufficient to form pure forsterite without any secondary phase. Highest values for fracture toughness (3.8 MPa.m1/2) and Vickers micro-hardness (5.0 GPa) recorded with sintering temperature 1500°C with 1 hour holding time which makes forsterite suitable potential for biomedical application.
Force Load of Cutting Tool by Turning of Nickel Alloy Inconel 718 with Sintered Carbide Insert
Authors: Mrkvica Ivan , Konderla Ryszard , Jurko Jozef , Panda Anton , Neslušan Miroslav
Published: August 2013

This article presents achieved results by measuring of force load of tool by turning of nickel alloy Inconel 718 with sintered carbide inserts with the progressive chip breaker designed by Pramet Tools Ltd. Company. Authors deal with studying of force load which is exposed the cutting tool by condition, when are achieved the limit values in view of tool wear. In the end it is carried out a comparision of intensity of cutting force components for these limit conditions.
Artificial Neural Network Approach for Impingement Drying of Germinated Brown Rice Soaking with Turmeric Solution
Authors: Suntaro Kiattisak , Sangchum Khwanruedi , Tirawanichakul Supawan , Tirawanichakul Yutthana
Published: August 2013

The objectives of this research are to determine the evolution of moisture transfer for germinated Thai jasmine Khao Dawk Mali 105 (KDML105) brown rice variety using impingement drying by eight commonly empirical drying modeling and artificial neural network (ANN) method. The experiments were carried out with drying temperatures of 80-100°C, initial moisture content of KDML105 rice samples soaking with turmeric solution was of 54-55% dry-basis and the desired final moisture content for each drying conditions was fixed at 14-16% dry-basis. The air flow rate was fixed at 7.0 m/s. The measured data in each drying conditions were simulated for getting drying equation by non-linear regression analysis. The results showed that the rice soaking with herb turmeric solution had no effect to drying kinetics and the simulated data using empirical drying equation of Henderson model had the best fitting to all measured data (R2of 0.9978-0.9995 and RMSE of 0.0001441-0.000414). For applying ANN modeling approach, the drying temperature and drying time were considered as the input variables for the topology of neural network while the moisture ratio was the output layer. The simulation results concluded that the simulated values of the ANN model, which was not concerned with any complicated physical properties of grain rice kernels, could be used for prediction drying kinetics and was relatively high accuracy compared to those predicted results of empirical models. So the ANN method without any complicated properties related of rice samples can approach for good prediction their drying kinetics as well as the complicated drying simulations method.
Change in Backlash of Humanoid Robot Joints under High Load
Authors: Koike Hitonobu , Kanemasu Kenji , Itakura Kiyoto , Okazaki Shota , Takamiya Masahiro , Kida Katsuyuki
Published: August 2013

In this work, wear of reinforced poly-ether-ether-ketone (PEEK) polymer bushes in friction against 7075 aluminium alloy cam plates or titanium crankshafts is investigated in order to establish the application possibilities in transmission parts in humanoid robot joints under high load torque. The PEEK bush wear requires close examination as well as the input axis-output axis transmission error (backlash). Sliding wear tests were performed on bushes under 4000 kgfcm (392 Nm) load torque, while the cam plate oscillated in the humanoid robot leg joint evaluation system. The robot joint using PEEK bush achieved quite small backlash after the fatigue wear test.
Effect of Film Thickness on the Structure and Electrical Properties of CuInSe2 Thin Films
Authors: Alageli Abdalrhman Salem , Elsamahi Mohamed Ibrahim
Published: August 2013

CuInSe2thin films were prepared under vacuum by conventional evaporation method .The films were deposited at different film thickness (188-577nm) .XRD of as-prepared powder indicated that CuInSe2has tetragonal poly crystalline structure with(122) preferred orientation, while XRD of the as-deposited films were of a mixed amorphous- microcrystalline nature. The variation of the calculated lattice parameters at different film thickness were showed. The electrical properties of CuInSe2thin films were studied at different film thickness. The dark conductivity of the films was measured as a function of temperature. Two regions were obtained corresponding to two activation energy. The activation energy decreases with increasing the film thickness.
Fire Computer-Simulated Fire Scene Verification of Entertainment Establishments
Authors: Lin Cherng Shing , Chen Te Chi , Lee Tai Yi
Published: August 2013

Entertainment establishments generally have a high volume of visitors and must pay special attention to enhance fire prevention and safety. In the past 30 years, many cases of serious fires have occurred in entertainment establishments in Taiwan, causing numerous casualties and significant property losses. Examples include the fire incidents at the Welcome Restaurant in Taichung City (64 people were dead) and at the Lunch in Restaurant and the Mythology World KTV in Taipei City (33 people were dead). Consequently, fire protection engineering research for entertainment establishments is extremely important. In this study, a specific bar-type entertainment establishment located in Taichung in 2011 was used as the research subject (9 people were dead).Field model-based fire dynamics simulator (FDS) software was used to reconstruct a numerical model for conducting a case study of the fire scene. Changes in the heat transfer, smoke flow, upper layer temperature, and CO concentration were investigated. This study also verified the fire field the evacuation of people. It is hoped that the results can provide a useful reference for fireproofing or prevention projects in similar entertainment establishments.
Simulation Based Logistics Distribution Planning and Analysis for an Assembly Line of Engineering Machinery Products
Authors: Guan Zai Lin , Wang Bao Xi , Mu Yan Ping , Lei Gang Jun , Yue Lei
Published: August 2013

This paper investigates the planning of the workshop logistics distribution system for an assembly line in an engineering machinery manufacturing company producing mainly concrete mixer trucks. The study covers mainly some methodologies in selecting appropriate logistics distribution mode, determining the distribution lot size and part-sets, and deciding the material packing method under some distribution batching rules. The simulation software QUEST is employed for carrying out some systematic simulation experiments and analysis, so as for finding an ideal logistics distribution scheme and improving the performance of the production logistics system.
Mathematical Modeling of Growth Conditions and Interpretation of Phase Diagram for InxGa1-xN Epitaxial Layer
Authors: Hasan Md. Soyaeb , Saha Apurba Kumar , Islam Md. Rafiqul , Amin Nowshad
Published: August 2013

It is imperative to determine the dependence of the quality and characteristics of the epitaxial film on different growth parameters. A mathematical model has been developed showing the effect of different growth parameters e.g. temperature, TMI and TEG flow rate, molar ratio on epitaxial film. This model is considered for InGaN film on GaN template with an Indium mole fraction up to 0.4 by Metal Organic Vapor Phase Epitaxy (MOVPE). The results obtained from this model has been compared and fitted with experimentally obtained data through XRD, RSM, PL, SEM etc. Finally, a phase diagram has been proposed to interpret the phase separation and Indium content evolution under the influence of growth temperature and precursor gas flow.
Analog Circuit Fault Diagnosis Based on Particle Swarm Neural Network Hybrid Algorithm
Authors: Han Bao Ru , Li Jing Bing
Published: August 2013

Base on improved particle swarm algorithm, this paper proposes a linear decreasing inertia weight particle swarm algorithm and error back propagation algorithm based on hybrid algorithm combining. The linear decreasing inertia weight particle swarm algorithm and momentum-adaptive learning rate BP algorithm interchangeably adjust the network weights, so that the two algorithms are complementary. It gives full play to the PSO's global optimization ability and the BP algorithm local search advantage, to overcome the slow convergence speed and easily falling into local weight problems. Simulation results show that this diagnostic method can be used for tolerance analog circuit fault diagnosis, with a high convergence rate and diagnostic accuracy.
Software Source Code Plagiarism and Direction Detection Based on PDG
Authors: Shu Bo , Du Xiao Jun
Published: August 2013

Because of the complexity of the software development, some software developers may plagiarize source code that comes from other projects or open source software in order to shorten development cycle. Usually the copyist would modify and disguise the source code copied to escape plagiarism detection. So far, most algorithms cant completely detect the source disguised by the copyist, especially cant exactly distinguish between the source code and the plagiaristic code. In this paper, we summarize and analyze the effect of disguised source to the detection process, design the strategy to remove the effect of disguised source, and propose a PDG-based software source code plagiarism detection algorithm. The algorithm can detect the existence of disguised source, so as to find out source code plagiarism. And we propose a heuristic rule to make the detection algorithm have the ability to give the plagiarism direction. Any existing algorithm does not have this function. We prove the availability of the algorithm by experiment.
An Improved Quantum-Behaved Particle Swarm Optimization Algorithm for the Knapsack Problem
Authors: Li Xin Ran
Published: August 2013

An improved Quantum-behaved particle swarm optimization algorithm is proposed for 0-1 knapsack problem.In the new algorithm, the inertia weight is expressed as functions of particle evolution velocity and particle aggregation by defining particle evolution velocity and particle aggregation so that the inertia weight has adaptability. At the same time, slowly varying function is introduced to the traditional location updating formula so that the local optimal solution can be effectively overcome. The simulation experiments show that improved Quantum-behaved particle swarm optimization algorithm has better convergence and stability in solving knapsack problem.
A Blocking Prediction for Volleyball Using Neural Networks
Authors: Chen Chien Hsun , Chen Chin Fa , Hsu Ming Hua , Lin Iuon Chang
Published: August 2013

Volleyball is a popular exercise. There are not only lots of sports enthusiasts but also many professional athletes. In a variety of tactics and globalization of volleyball sport, the match situation becomes complex and intense a lot in the relative. However, for the professional athletes, the focus of training is still just the specific skills and fitness training, so only doing the traditional training courses will make the athletes more difficult to get the winning. Therefore, in this paper, a new training conception is proposed to enhance the volleyball players successful blocking rate by neural network.
The Research on Risk Assessment Model of Cascading Failures in Power System
Authors: Zhang Fu Chun , Huang Jia Dong , Sun Xin , Zhou Qing Jie
Published: August 2013

In order to prevent large scope blackouts, the paper has established a model of power system cascading failures from the perspective of risk .Taking both the load of branch and the power flow changes into account, the model defines the probability of branch outage which can reflect the real-time operating condition. The consequences severity of cascading failure is measured by bus low voltage, power line overload level and the amount of isolated loads. In the process of searching fault link, the paper uses the structure transmission importance of branch to determine the next breaking branch, which can speed the search of the cascading failure mode. The simulation of the IEEE 39-node system shows the effectiveness of the method.
Risk Assessment Model of Cascading Failures in Power System Based on Danger Lines
Authors: Zhang Fu Chun , Huang Jia Dong
Published: August 2013

Based on the theory of risk, a new model is proposed for cascading failure in power system. According to fault factor of power line itself and the impact of real-time power flow, the branch outage probability model is established, and then the probability of cascading failure can be calculated. The severity function of cascading failure is defined by the analysis of fault consequences including the decrease of load margin, bus voltage offset and power line overload. The use of the set of danger lines which is judged by the amount of active power increase and load margin of power line can speed the search of fault mode. The simulation and analysis of IEEE 39-node proves the effectiveness of the method.
Controllability of Weakly Dependent Siphons under Elementary-Siphon Control
Authors: Chao Daniel Y. , Chen Jiun Ting , Huang Ju Sheng
Published: August 2013

Monitors are added upon problematic siphons to avoid deadlocks. Li and Zhou add monitors to elementary siphons only while controlling the rest dependent siphons to save cost. After failing a Marking Linear Inequality (MLI) test, they perform a Linear Integer Programming (LIP) test (NP-hard). We proposed a new MLI test earlier to avoid the LIP and extended it to S3PGR2 (systems of simple sequential processes with general resource requirements) for strongly dependent siphons (SDS). The control policy for weakly dependent siphons (WDS) is rather conservative due to some negative terms in the MLI. This paper shows that WDS and SDS have the same controllability (i.e., MLI). As a result, the control for WDS needs no longer be that conservative. We also develop an optimization (by redundancy elimination) of the computation required for LIP test to ensure deadlock prevention of S3PR (Systems of Simple Sequential Processes with Resources). A favorable result for this policy is that any n-dependent (n>2) WDS (similar to SDS) needs no monitor and hence the complexity for synthesizing a controller becomes polynomial.
Robust Attitude Control of Quadrotor Vehicle via Extended State Observer
Authors: Zhao Dang Jun , Jiang Bing Yan
Published: August 2013

Extended state observer (ESO) based output-feedback control strategy is proposed for the attitude control of a quadrotor aerial vehicle in this paper. By using ESO technique, the generalized disturbances are estimated from output signals. According to the sliding mode method, the attitude controller with disturbance compensations is proposed for the attitude tracking control of a quadrotor vehicle. The theoretical analysis reveals that all signals in the closed-loop system are ultimately uniformly bounded. The simulation results validate the efficiency of the proposed method.
Design and Simulation of Controllers Based on Multiple Control Methods
Authors: Tan Fei , Fan Tao
Published: August 2013

Several control methods are discussed in this paper and the function of feedback of control is analyzed. The most important function of feedback is supervision, thus, make full use of the feedback information is a good way to study control problems. By using the characteristics of open-loop and closed-loop control and the effects of feedback, the authors design a controller structure and provide a feasible multi-mode intelligent control algorithm, moreover, the excellent performance of the algorithm is verified by simulation.
Uniform Model and Stability Analysis of MIMO Networked System with Delay and Packet Dropout
Authors: Wang Zhi Wen , Guan Hu Chang
Published: August 2013

In this paper, modeling and stability of MIMO networked control system is considered in view of network-induced delay and data packet dropout simultaneously. Based on the assumption that the data packet dropout rate is fixed and the time delay is less than one sampling period, the MIMO networked control system can be considered as linear discrete time-delay system with rate constraints on events. Then, the uniform model of MIMO NCS is established and stability criterion is derived.
A Design of Active-Disturbance-Rejection Control of Loitering Unit
Authors: Yuan Xiao Dong , Jiang Tie Ying , Li Bing
Published: August 2013

As the problem that loitering unit is vulnerable to stall because of air turbulence in the initial period of posture adjustment process, this paper is based on the classic flight control and the active-disturbance-rejection control principle, and uses the method of ADRC which based on RBF neural network. It designs the ADRC for the attitude adjustment of loitering unit in the initial period, and compares it with the classic flight control algorithm and the active-disturbance-rejection algorithm. Through the contrast of the control simulation for the three control algorithms we can obtain that, RBF ADRC is superior to ADRC control method and the classic flight control method.
A Software Hardware Co-Design Approach for FPGAs on Nios II Soft-Core Processors
Authors: Zhang Jun An , Guo Ya Hong , Mo Guo Min
Published: August 2013

In order to prove the applicability of the design approach with complex System-on-Chip (SoC), equipments for real-time electrocardiographic (ECG) signal generator and corresponding algorithm have been implemented in this study. The study mainly focused on completing a SoC design which constructs a customizable system via user interface to an FPGA Chip in accordance with the need of a specific application. In the proposed design flow the architecture of the generated hardware is tailored to match the communication structure of the application. This allows the developer to meet the system's performance, size and power consumption requirements with short time to market. The feature-rich multimedia products can meet market expectations of high performance at low cost and lower energy consumption.
Automatic Generation of Standard Examination Questions Based on Ontology
Authors: Chen Yi Shan , Ran Dong Ming , Zhu Xin Hua
Published: August 2013

Examination question is one of the important tools that reflect students' learning situation and teachers' teaching effectiveness. Traditional questions were generated by the teacher manual, which will lead to the disadvantages of inefficient work and no reusable examination. In order to overcome these disadvantages, the paper proposes an ontology-based approach to standardized examination questions, which automatically generates questions and focuses on the multiple-option questions.
Analysis of Aerodynamic Characteristics in the Bottom of a Car
Authors: Bao Hai Tao , Wang Cheng
Published: August 2013

The aerodynamic characteristics of ordinary vehicle have been studied by lots of scholars, while few people pay enough attention to the aerodynamic characteristics in the bottom of the car. As the requirements of regulations for the performance of the car continues to increase, Analysis of Aerodynamic Characteristics of the car is much more necessary now. In this paper , by using CFD method and getting benefit from the established CFD software, we gave external velocity field and pressure field of the car. The data was analyzed and summarized and the computational results are obtained. In the final analysis for the flatness in the bottom of the car influence on aerodynamic characteristics.This paper has done some useful attempts, and it will provide specific reference significance to the numerical simulation on design of the car in the future.
Regeneration of Activated Carbon Fiber by Microwave under Nitrogen Condition
Authors: Wang Chen Xu , Wang Xue Qian , Ning Ping , Feng Quan Li
Published: August 2013

The purpose of this work was to explore the application of microwaves for the regeneration of activated carbon fibers saturated with ethanol. The efficacy of the regeneration was analyzed by the rate of desorption and mass loss. When the microwave power was 528W , the dosage of activated carbon fiber was 3.0g , the nitrogen gas flow rate was 1.4m3/h and the microwave irradiation time was 180s, the desorption rate was up to 90.2% and the outlet concentration of ethanol was 95.6%. The adsorption of activated carbon fiber after microwave regeneration for many times was larger than the fresh activated carbon fiber. And the rate of total mass loss was 4.74%.
Electro-Generation of the Microbe Fuel Cell for Pyrite-MnO2 in the Presence of Acidithiobacillus ferrooxidans
Authors: Xiao Li , Chen Bin , Zhong Hui , Guo Quan Wen
Published: August 2013

Pyrite was used to study the electro-generation both the sterile dual battery system and the microbe fuel cell for pyrite-MnO2in this paper. The Relationship between potential, work output, and current for pyrite in presence ofA. ferrooxidansand sterile, showed that the electro-generation trend enhanced in the presence ofA. ferrooxidansfor pyrite. The Evans graph for pyrite in presence ofA. ferrooxidansand sterile showed that with the increase of current, the output potential decreased. The dissolved metal ion in the presence ofA. ferrooxidansis nearly 12% higher than that in the absence ofA. ferrooxidans; the electro-generative quantity in the former is about 166% more than that in the latter; the transferred charge due to the bacteria is more than that of sterile dual battery process in the last stage of microbe fuel cell.
The Development of the Electro-Hydraulic Driving Bicycle
Authors: Chang Lv , Yao Jun Fei
Published: August 2013

Electric bicycles as a new means of transportation is gradually rise. this paper introduces hydraulic drive into electric bicycle, avoiding the problems of frequent adjustment and repair, and reducing the noise. Electric hydraulic driving bicycle may be a new road to develop the electric bicycle industry. This paper combines the working principle of electro-hydraulic driving bicycle, determining the performance parameters of electro-hydraulic driving bicycle, and the parameter calculation and selection of components in the hydraulic system.
Design and Implementation of the Control Device for a Cable-Driven Camera Robot
Authors: Wang Long , Sheng Ying , Qiu Yuan Ying , Chen Guang Da
Published: August 2013

Due to the advantages of strong bearing capacity, compact structure and large working space, cable-driven camera robots are being used increasingly. This paper focuses on the design and implementation method of the control device for a four-cable-driven camera robot. Firstly, a kinematics model is built and the variations of the cable lengths are analyzed along with the camera robot motion; then, the console and actuator of the camera robot are designed; again, PC software transferring command codes from the camera robot console to the actuator and displaying camera robot motion state is developed; finally, the stability and rationality of the control device are verified by the experiment.
The Research on Share Rate of Trip Mode Choice Based on Bayesian Theory
Authors: Liao Yong , Wu Tao
Published: August 2013

Based on Bayes analysis, a new model of trip mode choice is presented. Trip mode choice is divided into three phases: calculating prior distribution, obtaining conditional distribution by sampling and calculating share rate of trip modes. Supply characteristics of trip modes are taken as prior information. Unity value takes the place of unity function in MNL, and then prior distribution is achieved. Condition distribution is gained from sampling information. Bayes analysis is introduced into calculating posterior distribution. Share rates of trip modes, is calculated by total probability formula. Compared with other choice models, Model proposed in this paper improves the forecast accuracy of share rate without the need of parameter calibration like Logit model.
Design and Kinematics Analysis of Propulsion Mechanism of Biped Robot Running on Water
Authors: Xu Lin Sen , Wei Xian Ming , Cao Kai , Luo Ming Zhou , Shi Yun Gao
Published: August 2013

A biped robot is designed to simulate the water running function of the basilisk lizard. The propulsion mechanism and the control system of the robot are studied. Based on the water running process of the lizard, the changed Watt-I planar linkages are developed to provide the lifting and propulsion forces to run on water. On the basis of the movement equations of the four-bar mechanism and the coordinate transformation equations, the double bar Assur Group movement trajectories of the linkages are deduced to simulate the foot trajectories of the lizard. According to the kinematics principle of the planar four-bar linkage, we have studied the kinematics parameters of the Watt-I linkage, which are the basis of the manufacturing of the prototype. The real prototype of the robot is manufactured to test its function of water running. The lifting and propulsion force generated by the mechanism is similar with the basilisk lizard, whose value is about 1.3N. The experiment results show that the propulsion mechanism can satisfy the requirement of biped robot running on water.
Design and Implementation of High Precision Active Wheel Sensor
Authors: He Ping , Cao Sheng Mei , Ma Xing Yu , Li Qi
Published: August 2013

Wheel sensor is the basic facility of railway axle counter. The traditional active magnetic steel axle counter method has a disadvantage of low accuracy. For this reason, a high-precision active wheel sensor which sends axle pulse in a fixed position of wheel signal was presented. In addition, double DSP parallel working mode was used to improve the reliability of the system. Firstly, the detection scheme of the system was presented. Then hardware circuit of the wheel sensor was designed with TMS320F2812, and the reliable output of the pulse was realized by using the gate circuit. Finally, software programming was completed based on the hardware design, which mainly includes the wheel signal detection and position calculation for sending axle pulse. The actual operation shows that the system has the advantages of being stable and reliable and has strong resistance to interference, which makes it a high practical value.
The Design of Tire Pressure Monitoring System Based on WSN
Authors: He Xue Wen , Cheng Long , Huang Wen Qian
Published: August 2013

Tire pressure monitoring system (TPMS) is used to monitor fast or slow tire pressure loss or too high tire temperature, and ensure the safety of the drivers and the passengers. A new kind of TPMS as the core of MSP430F149 microcontrollers is put forward, which based on Wireless Sensor Network. It adopts Infineon SP370 new sensor as the transmitter and TDA5220 as the receiver. The whole system scheme, hardware and software design are expounded in this paper. A low cost, low power consumption and high precision TPMS is studied, and the tire pressure and temperature can be immediately and real-time measured.
Implementation of a High-Precision pH Sensor
Authors: Xu Zhan Wei , Zheng Gui Lin
Published: August 2013

A high-precision pH sensor based on electrochemical principle is proposed in the paper. The principle of the sensor, the performance parameters of MCU, hardware architecture and experiment are introduced. The NEC microprocessor, which is low-power and high stability, is adopted as core processor. The three operational amplifiers same-phase parallel amplifying circuit not only matches the impendence of the pH combination electrode, but also eliminates the impact of wire resistance on pH measurement. The system's capacity of resisting disturbance is improved. Using 18-bit AD converter, which has programmable amplifier on chip, improves measurement accuracy. Both theoretical analysis and experimental results show the effectiveness of the pH sensor. A full description of the pH sensor and implementation are presented.
Improved Self-Location Algorithm of Wireless Sensor Network Based on Unmanned Aerial Vehicle
Authors: Zhang Yun Zhou , Wei Dong Fei , Wang Ze Yu
Published: August 2013

In this paper, we propose a wireless sensor network self-location improved algorithm based on the Unmanned Aerial Vehicle (UAV). The path and the signal emission mechanism of the UAV are rational planning. The k-3 covering method is used to programming the working point and the path of UAV. We also set up a wireless sensor network localization experiment platform based on the UAV and then we carry on several experimentations and curve fitting on the surface-to-surface and surface-to-air distance curve. Experimental results show that the self-location system built based on the theories this paper proposed has an air-to-surface actual distance error of 4.42m and the algorithms positioning error is 3.67m which has very high work efficiency.
Overlapped Bubbles Recognition in Two-Phase Flow
Authors: Wu Cheng Xuan , Qu Jun Le , Lei Zhuo , Dong Lei , Liu Jie
Published: August 2013

We presented an algorithm to recognize overlapped bubbles in two-phase flow. We extracted bubble images from gray image by Background subtraction, and then converted them to binaries. Final images were segmented to compare them with the templates of bubble pattern. Finally, we obtained the recognition accuracy to compare their similarities. The recognition rate is to 93% and it is efficient in the field of the machine vision.
Study of Micro-Morphology Influence on the EHL Analysis of Water-Based Ferrofluid
Authors: Shi Xiujiang , Wang You Qiang
Published: August 2013

The elastohydrodynamic lubrication (EHL) study of water-based ferrofluid bearing with single sine-shaped peak, rectangular-shaped valley and V-shaped valley was carried out. The influence of the amplitude and the width on the pressure and film thickness was discussed. The results reveal that the pressure and film thickness change apparently with the change of micro-morphology; The amplitudes of the local pressure peak and the film thickness increase with the increase of amplitudes; The widths of the local pressure peak and the film thickness increase with the increase of width.
Modeling of Drive System for Trackless Rubber Tyre Electric Vehicle
Authors: Zhang Chuan Wei , Wan Ying Ying , Zhang Rui Fang , Xi Zong Hu
Published: August 2013

Owing to harmful gas emissions and high accident rate of diesel engine in the coal mine trackless auxiliary transport, the spring of trackless rubber tyre electric vehicle powered by the battery pack comes. This paper considers the drive system to improve the performance of the electric vehicle. In order to adapt to the complex environment of coal mine, the analysis of basic structure for trackless rubber tyre electric vehicle was based on the three-phase AC induction motor. After elaborating the vector control theory of induction motor, the field-oriented vector control system model of trackless rubber tyre electric vehicle drive system with induction motor rotor was built in Matlab/Simulink. The simulation shows that the proposed control algorithm permits the drive system to achieve good steady and dynamic performance.
Research of Face Detection Method Based on Skin Color Feature
Authors: Ye Qing
Published: August 2013

Human face detection is the first critical step of face recognition system. This paper proposed a face detection method based on skin color feature. Firstly, the method of building a skin color feature from RGB to YCbCr and extracting skin color region according the chrominance similarity was used to extract the face gray image. Secondly, image smoothness and image binarization were used to receive the binary image, then mathematical morphology operators were used to eliminate the binary images noise and disturbance. At last, human face regions are detected through projection operation. The result of experimentation affirms that the method is efficient to detect human face.
A Novel Method of Motion People Detection and Tracking in Moving Background
Authors: Huang Lve , Yan Hua Biao , Tan Lu Min
Published: August 2013

The Surendra background update and novel fast model matching were mixed which can reduce the matching region. A Yuntai tracking system was present for people tracking, the fuzzy control tracking based on polar coordinates was also present, which makes the tracking of people object always in the video range and the Yuntai neednt move frequency. Results indicate that the algorithm is superior to the previously published variants of the model matching and the Yuntai system track people in real time.
Comparison about Stitching Algorithms for Sub-Images of Multiple TDI CCD Chips Based on Image Matching
Authors: Cao Bin Cai , Zhu Shu Long , Meng Wei Can
Published: August 2013

Due to the limited pixel numbers in single TDI CCD chips, some TDI CCD chips are combined in the focal plane to reach a sufficient swath width. Basic imagery is delivered as one image data file per strip and how to convert those sub-images to a larger, accuracy equivalent image is an essential problem in satellite images’ processing. Some key factors that affect the imaging quality of TDI CCD images are discussed firstly. It shows that discrepancies in the along-track direction which caused by different viewing angle and topographic relief are the main problem to improve the stitching accuracy. Three basic image-oriented stitching strategies are discussed. Experimental results show that the RMS of shift transformation, single affine transformation and piecewise affine transformation is 1.4 pixels, 1.3 pixels and 0.2 pixels. Piecewise affine transformation fully meets the requirements of further processing.
Acoustic Features Selection of Speaker Verification Based on Average KL Distance
Authors: Luan Yu , Li Hong Zuo , Wang Ya Fei
Published: August 2013

This paper proposes a new Average Kullback-Leibler distance to make an optimal feature selection algorithm for the matching score fusion of speaker verification. The advantage of this novel distance is to overcome the shortcoming of the asymmetry of conventional Kullback-Leibler distance, which can ensure the accuracy and robustness of the computation of the information content between matching scores of two acoustic features. From the experimental results by a variety of fusion schemes, it is found that the matching score fusion between MFCC and residual phase gains most information content. It indicates this scheme can yield an excellent performance.
Application of Working Face Rock Burst Prediction of Grey Modeling Cusp Catastrophe Analysis Based on the Acoustic Emission
Authors: Li Xing Wei
Published: August 2013

According to acoustic emission mechanism of the material stress process, establish the gray cusp catastrophe model of acoustic emission parameters based on the grey theory and catastrophe theory. Using the model, carried out mutation analysis of the acoustic emission parameters of the coal mining face supporting pressure, then realized to face discrimination and prediction of rock burst. Point mutations in the roof sandstone acoustic emission rate of this parameter, has important significance for fracture mechanics study of working face roof sandstone.
A Novel Compliant Mechanism with Three Degrees of Freedom
Authors: Lin Sheng , Xu Jian , Wang Chun
Published: August 2013

A novel compliant mechanism with three degree of freedom (DOF) is proposed, based on the method of Freedom and Constraint Topology (FACT). One movement and two rotations are obtained in Case 3, Type 2 freedom space. A redundant constraint is added to improve the symmetry. The finite element modal (FEM) is established and static force analysis is conducted. Results demonstrate that the compliant mechanism is decoupled. Modal analysis is carried out with the finite element method. And four orders natural frequency and main vibration mode are obtained.