bluuebunny/crossref_metadata_2025 huggingface dataset:
Design, Implementation and Simulation of an Experimental Multi-Camera Imaging System for Terrestrial and Multi-Purpose Mobile Mapping Platforms: A Case Study
Authors: Hammoudi Karim , Mc Donald John
Published: July 2013

Mobile Mapping Systems (MMS’s) are powerful tools for rapidly and massively collecting imagery in various environments (e.g., rural, semi-urban, urban). In particular, the data collected at terrestrial level can be exploited to complement aerial acquisitions for extending GIS databases,visualizing and modeling urban environments and studying environment morphogenesis over time. Hence, the development of mobile mapping platforms is a topic of great interest for many mapping agencies and surveying companies. Moreover, the experimental imaging systems of mapping vehicles are equipped with varied infrastructures in part resulting from the wide range of targeted applications. Determining a detailed design procedure for such imaging systems is of critical importance, and can be both arduous and time-consuming. Although commercial imaging systems can be exploited directly they are often pre-configured for specific applications. For these reasons, we propose a case study that deals with the development of an orientable and scalable imaging system. In particular, this paper focusses on the primary stage of the mechanical implementation of a multi-camera infrastructure. To this effect, we provide a design document that includes full technical specifications and drawings for creating a roof-mounted camera mast from a vehicle platform. We also provide an inventory of resources required for creating the system. As part of the design process we analyse some well-known MMS’s paying particular attention to their imaging systems. Finally, we evaluate the proposed design by creating the complete 3D mock-up of the camera system at real-scale and by simulating camera configurations from an experimental van platform. Experimental results clearly show the usefulness of this study in the design of an experimental and multi-purpose imaging system.
Optimal Robotic Assembly by Dynamic Markings
Authors: Tabără Iulian Alexandru , Dugăeşescu Ileana
Published: July 2013

The research of the optimal conditions of achievement of robotic assembling requires the determination of the restrictions imposed by the characteristics of the desired assembling. To analyze the requirements imposed to the assembling robot in the elaborated paper there have been considered Petri Graphs with dynamic markings. These schemes permit a synthetic representation of the assembling process and they praise clearly the active phases of the robot.
NAO Robots Collaboration for Object Manipulation
Authors: Panfir Alina Ninett , Boboc Răzvan , Mogan Gheorghe Leonte
Published: July 2013

This paper proposes a new method of collaboration within a team of twoindividual NAO robots that should execute together a complex operation. The Naorobots are developed so as not only to act individually, but also to cooperatewith other robots if they cannot accomplish the operation alone. This paperpresents a case study demonstrating the integration of the humanoid roboticsplatform Nao within a cooperation application. This specific scenario ofinterest takes place in a small simulated manufacturing environment; while thetask being the storage of a big object, with different shape and weight. Thisscenario is used to observe the impact and performance that this particularteam of humanoid robots has in an industrial environment.Finally we present the successful implementation of robot – robot cooperationcapabilities inspired by human behaviour.
Determining the Driving Torques of the Robots with Delta 3DOF Parallel Structure by Using the MSC ADAMS Software Pack
Authors: Andrioaia Dragoș , Rotar Dan , Puiu Gabriel
Published: July 2013

During the latest years the parallel structure robots have been used more and more due to their advantages that consist of: high stiffness, availability for usage at higher speed and acceleration rates. In general these robots are used for handling light objects [. For choosing the driving servomotors of the robots, the maximum torques needed for the parallel mechanism to transport an object of a certain weight, along a trajectory, at a certain speed and acceleration, have to be considered. In this work the authors are approaching the study of the variation of the driving torques of the robots with parallel structure Delta 3DOF along a trajectory, in order to select the driving servomotors [2]. For analyzing the driving torque variations along a trajectory the MSC Adams software pack has been used.
Control System Design for a Mechatronic Solar Tracker
Authors: Ionită Monica Alina , Alexandru Cătălin
Published: July 2013

This paper presents the optimization of a tracking system for photovoltaic modules, regarding the growth of energetic efficiency. The study takes into consideration the optimization of the control system, which is developed with the commercial DFC (Design for Control) software environment EASY5. The tracking system is approached in mechatronic concept, by integrating the control system and the mechanical device of the solar tracker at the virtual prototype level. The optimization is performed by using parametric design technique, the design variables for optimization being the amplification factors of the controllers. The optimization study leads to the maximization of the incident solar radiation gain by minimizing the tracking errors.
Extension Hybrid Force-Position Robot Control in Higher Dimensions
Authors: Vladareanu Victor , Smarandache Florentin , Vladareanu Luige
Published: July 2013

The paper presents an advanced method for solving contradictory problems of hybrid position-force control of the movement of walking robots by applying a 2D Extension Set. Using the linear and non-linear attraction point principle and the network of attraction curves, there is determined the 2D space Dependent Function generated by position and force in order to solve the robot real time control. The generalization of the extension distance and dependent function uses Extenics in Higher Dimensions theory eliminates the crisp logic matrix of Cantor logic which describes the position-force sequences. Thus was developed an optimization method for hybrid position-force control which ensures positioning precision and robot movement stability on rough terrain. The final conclusions lead to development of a methodology that allows obtaining high level results for hybrid position-force control using extended transformations onto the real numbers set and an optimization function generated by the extended dependence function in 2 D space.
Experimental Investigations and Numerical Simulations of the Viscous Flow around T-Profiles
Authors: Schiaua Mihai , Dragomirescu Andrei , Safta Carmen Anca
Published: July 2013

This paper investigates both experimentally and numerically the flow of a viscous fluid around T-profiles, i.e. T-shaped bodies, having different geometries. Of main interest it was the vortex shedding behind the T-profiles with an eye towards its application to flow measurement in open channels. Another purpose of the study was to assess to what extent different numerical models can be used to accurately predict the flow in the vortex street behind T-profiles.
Researches Regarding Modal Analysis of a Pressure Wave Supercharger Rotor
Authors: Atanasiu Catalin George , Buzea Daniel Eugen
Published: July 2013

This paper aims on comparison between virtual modal analysis and experimental modal analysis of a PWS rotor. A virtual simulation and an experimental analysis were conducted in order to successfully determine the eigen modes of the PWS rotor. Those frequencies are a good thing to know in case of a new PWS development.
Design and Simulation of a Single DOF Human-Like Leg Mechanism
Authors: Geonea Ionut Daniel , Alexandru Cătălin , Margine Alexandru , Ungureanu Alin
Published: July 2013

In this paper is carried out the selection and simulation of a one degrees of freedom (DOF) leg mechanism. The leg mechanism consist of a nine bar linkage and is based on a Low-cost Easy-operation idea. Virtual simulation tests of the model shows the feasible of the proposed leg mechanism, for human leg motion assistance. Kinematics and dynamics analysis of the leg mechanism is carried out. Finally, dynamic simulation results reveal the motion characteristics and performance of the leg mechanism.
Virtual Effort: An Advanced User Interface that Combines Various Visual Information with a Kinetic System for Virtual Object Manipulations
Authors: Moldovan Constantin Catalin , Staretu Ionel
Published: July 2013

The present day virtual environments are very advanced and have the ability to display complex representations of simulated objects together with their surroundings. Each virtual object can be endowed with multiple physical properties; in this way the entire virtual environment tends to become very real. However, human interaction with objects in virtual environments is forced from the user perspective and very different from how humans interact with objects in physical world. In this paper, a research that allows a more natural human-computer communication is presented. This is realized by combining visual information that is displayed to a user with kinetic information captured from the user hand by utilizing a sensor to capture depth data. The presented method is used in order to perform experiment that consist in grasping, moving and dropping a virtual object and analyze the hand trajectory compared with the virtual object trajectory.
Imaging Analysis and Application of Digital Speckle Photography with EALCD
Authors: Huo Fu Rong , Li He , Yang Yu Hang , Xue Chang Xi , Wang Wen Sheng
Published: July 2013

According to the principle of speckle photography, CCD(Charge-Coupled Device) as a recorder, and EALCD(Electrically Addressed Liquid Crystal Display) as a read-out element, which makes the speckle photography to digital. Recording light path of the subjective and the objective speckle and observation light path of full-field analysis and point-by-point analysis for fringe reconstruction have been respectively researched. At the same time, measuring by speckle photography, the fringes in the interometry pattern must be carefully analyzed. Since the speckle noise can greatly infect the signals. Thus to de-noising the speckle fringe by a suitable filter before processing is expected. The mathod of digital filter enhancement, smooth denoising be used to reduce the influence of the high noise and the inhomogeneous grey of the speckle interferogram. Finally the thinning fringe is acquired, the fringe spacing is extracted accurately, the three-dimensional measurement of a deformed object is realized with mathematical morphological thinning algorithm.
Moving Objects Detection Based on Gaussian Models with HSV
Authors: Zhao Jie , Yi Fa Ling , Lin Xian Hua
Published: July 2013

An important step in video tracking and identification is moving target detection. The new method combined Gaussian background models with HSV remove space shadow, better adapted to the situation of background changed and updated, avoid segmentation errors caused by shadow. First, the Gaussian model was constructed, and a new way was adopted to update background. Then, a coarse foreground image could be obtained by background subtraction. Next, moving shadows was eliminated by a shadow detection algorithm using hue, saturation and brightness information. Finally, we performed post processing, including morphology filtering, connected component analysis and seeded region growing. The experiments prove using the detection results and mean shift algorithm can get a better tracking.
Implementation of Driver Fatigue Detection System with PCNN Algorithm Based on FPGA
Authors: Lu Yang , Gao Chao
Published: July 2013

This work presents the design and implementation of drivers fatigue detection system based on FPGA to prevent car accidents. According to the bright pupil phenomenon, which is produced by the retina when the incident lights wavelength is 850 nm, drivers eyes can be detected easily. While acquiring the real-time video of the drivers face by camera, the system accomplishes the detection of drivers eyes by using a simplified PCNN (pulse coupled neural network) and the computation of the PERCLOS (Percentage of Eye Closure) to decide whether the driver is fatigue or not. All the designing and accomplishments of the system are based on the FPGA platform Xilinx Virtex Pro Development Board. During the experiments, the system has the ability of processing 25 frames/sec, which is the speed of collection of the used camera. Also, the fatigue detection system has good stability and accuracy.
Applications and New Research of Visual Saliency and Attention
Authors: Hui Fan , Lu Ren , Li Jin Jiang
Published: July 2013

Drawing on the suvey of visual attention degree and its significance in psychology and physiology , in recent years, researchers have proposed a lot of visual attention model and algorithms, such as Itti model and many saliency detection algorithms. And in recent years, the researchers applied the visual attention of this technology in a lot of directions, such as a significant regional shifts and visual tracing detection model based on network loss, for video quality evaluation. This paper summarizes the various algorithms and its application of visual attention and its significance.
Algorithm Development and Computer Simulation of Color Decoding of Mastermind Board Game
Authors: Hubalovsky Stepan , Šedivý Josef
Published: July 2013

Mastermind is code-breaking board game whose principle is to find as fast as possible the guess pattern of code pegs in color and position based on feedback realized by key pegs. The game is targeted at development of logical thinking. The process of the decoding can be realized also using computer. Mathematical analysis, strategy solution, algorithm development of solution and computer simulation program in MS Excel of decoding of the color regardless of the position ordering are shown in the paper.
Hierarchical Clustering Algorithm of the Minimum Risk
Authors: Wang De Xing , Xu Jie Long , Yuan Hong Chun
Published: July 2013

Clustering analysis is grouping a set of physical or abstract objects into the similar class. In traditional clustering algorithm, objects are usually divided into a certain cluster. This paper applies the risk evaluation of decision-theoretic rough set model in clustering analysis which solves the problem of uncertain boundary region, and proposes a hierarchical clustering algorithm of the minimum risk which can adjust threshold value to construct a clustering evaluation function in order to find the solution to optimize the result. At last, the case analysis shows the algorithm is feasible. It could provide a strong support for marine environment monitoring system and so on.
Swarm Automated Planning Algorithm with Repairing Operators
Authors: Chai Xiao Long
Published: July 2013

Swarm automated planning algorithm is a planning method based on planning graph technology, and the algorithm which could improve the searching efficiency through importing swarm intelligence has the character of global and parallel. Yet sometimes the algorithm has the shortcoming in the local searching. For instance, maybe the quality of the best candidate planning solution would get lower after another around of searching. To enhance the ability of the local searching and the convergence acceleration, the swarm automated planning algorithm which with the local repairing operators is presented in this paper. The searching efficiency could be bettered through the pertinence repairing operators and the heuristic evaluation information to control the repairing processes.
A Solution to Best Itinerary Problem Based on Strategy Set under Dijkstra Algorithm
Authors: Guo Nan Chu
Published: July 2013

The best itinerary problem has been a heat topic for several decades. Among those sophisticated methods used for choosing paths, Dijkstra algorithm is a simple but powerful method. However, Dijkstra algorithm is restricted because of 3 reasons. Firstly, the weight of each path must be a constant value. Secondly, the algorithm only represents the best path, disregards the second and third best paths. Thirdly, the weights only represent a single variable, which cannot be used to represent two different variables simultaneously.
In this paper, we use a Filtering Algorithm based on Lagrange relaxation method and ordinal selection to overcome these weaknesses. In our OLR Dijkstra algorithm, strategy set of choosing paths shows a strong stability and reliability facing different probabilities situations. Only 13.2% diversity degree was found when path efficiency varied from 100% to 11.1%. Smallest time complexity of the OLR Dijkstra algorithm is 2 times than normal Dijsktra, which is .
On the Adjacent Vertex Distinguishing Proper Edge Colorings of Several Classes of Complete 5-Partite Graphs
Authors: Ma Chun Yan , Chen Xiang En , Yang Fang , Yao Bing
Published: July 2013

A proper $k$-edge coloring of a graph $G$ is an assignment of $k$ colors, $1,2,\cdots,k$, to edges of $G$. For a proper edge coloring $f$ of $G$ and any vertex $x$ of $G$, we use $S(x)$ denote the set of thecolors assigned to the edges incident to $x$. If for any two adjacent vertices $u$ and $v$ of $G$, we have $S(u)\neq S(v)$,then $f$ is called the adjacent vertex distinguishing proper edge coloring of $G$ (or AVDPEC of $G$ in brief). The minimum number of colors required in an AVDPEC of $G$ is called the adjacent vertex distinguishing proper edge chromatic number of $G$, denoted by $\chi^{'}_{\mathrm{a}}(G)$. In this paper, adjacent vertex distinguishing proper edge chromatic numbers of several classes of complete 5-partite graphs are obtained.
New Technology of Surveying and Mapping in the Application of Deformation Monitoring
Authors: Feng Yan Ping , Zheng Tian Zhu
Published: July 2013

Deformation monitoring is one of the engineering measurement tasks. Three-dimensional laser scanning technology as a new technology has developed in recent years. With its high accuracy, high density, real-time and initiative, it wins great favor of people in the industry. Its unique technical advantages and characteristics make it widely used in many fields. The article summarizes the application of deformation monitoring methods and discusses the characteristics of ground 3D laser scanner, its working principles, its application in the field of deformation monitoring and some problems that should be considered.
Fault Diagnostic Equipment of Electrical System Based on Embedded System
Authors: Zhu Xin Yun , Yang Xiao Qiang
Published: July 2013

The development of an intelligent fault testing equipment for electrical system of a mechanized bridge is accomplished based on embedded system. This equipment consists of USB communication interface, data acquisition unit, intelligent fault diagnosis as well as maintenance and management function together with embedded microprocessor MSP 430. It can carry out data acquisition and condition monitoring with multiple operating parameters, such as voltage, current, resistor, frequency as well as other operating state values. The fault testing and diagnosis are automatically performed by the application of measured data, user input observation results that are represented by logical value, and the detection results of other testing equipment. In addition, The graphical user interface facilitates users measurement and observation till to the location of the fault parts, and subsequently help users make maintenance solution and scheme. So far, the detecting precision meets the requirements of fault testing of electrical system. The equipment has also benefits of handy structure, lightweight, low consumption, large storage capacity, excellent expandability and intelligent inference capability. It provides engineering vehicles, for instance mechanized bridge, with proper and dedicated intelligent monitoring, diagnosis and testing equipment. Meanwhile the work presents an important technical method for the technical support of the various engineering equipment in time of war.
The Detection of Glycerate and Free Fatty Acids by the Method of Near-Infrared Spectroscopy
Authors: Ming Lang , Chen Zhe , Zhang Jun , Huang Fu Rong , Xie Meng Yuan , Wang Yong , Wang Er Pei
Published: July 2013

The monoglyceride, diglyceride, triglyceride and free fatty acids in vegetable oil was detected by the analysis method of near-infrared spectroscopy. The near-infrared spectrograms of 77 oil samples were collected, including 67 samples for calibration set and 10 samples for prediction set. The Partial Least Squares (PLS) optimized models were established with OPUS chemical analysis software. The results demonstrated that the determination coefficient of monoglyceride, diglyceride, triglyceride and free fatty acids was 0.9691,0.8627,0.8742 and 0.9194, respectively. And the standard error of prediction for the four components was 0.0104, 0.1830.201 and 0.0106, respectively. The presented results showed that the analysis method of near-infrared spectroscopy can be used to identify the diglycerides and triglycerides, but as for monoglyceride and free fatty acids, further experimental verification is needed.
Application of Zero-Phase Digital Filter in Magnetic Flux Leakage Testing for Tank Floor Inspection
Authors: Liu Fu Jun , Ling Zhang Wei , Kong Shuai , Zheng Mu Lin
Published: July 2013

Magnetic flux leakage (MFL) testing, as a modern nondestructive testing technology, has significant application in tank floor corrosion defect inspection. In view of signal characteristics in the MFL testing of tank floor, an improved signal progressing method combining software and hardware was presented. Especially, in order to avoid phase distortion caused by applying common digital filter, zero-phase digital filter which could effectively eliminate the phase distortion was proposed to improve the location accuracy of defect. Experiment results showed that the signal progressing method could improve signal-to-noise ratio, and the peak-peak value of defect signal had a good linear relationship with the depth of defect which showed that the proposed method could meet the requirement of the MFL testing. Comparing results showed that, the maximal location error of zero-phase filter was 2 mm and that of common digital filter was 24 mm, which showed that zero-phase filter had better defect location accuracy.
An Inverse Modeling Method for Acoustic Emission Source of Cracking
Authors: Li Li , Li Ji
Published: July 2013

Crack formation is a severe problem concerning steel structures under service loading. Understanding of the mechanism of crack initiation and propagation is therefore critical to structure safety design and maintenance. Although many efforts were put into crack mechanism studying, and some progress has been made in the aspect of crack propagation, the problem of crack initiation i.e. cracking remains left unsolved. In this paper, an inverse modeling method for acoustic emission (AE) source of cracking was proposed for the mechanism revelation. In the method, AE signal was related to crack stress based on the theory of elasto-dynamics; the crack stress was inversely modeled from AE signal by half-space Greens function and procedure of de-convolution. In an application to the AE testing for steel structure cracking, AE source function representing the time history of crack stress was obtained. The crack stress was found to be a step-like function with a pulse, and with it the mechanism of cracking was recovered. The results indicated that, the modeling method is effective for the study on mechanism of cracking.
Knowledge-Based Fault Diagnostic System Using Binary Fault Tree
Authors: Li Huan Liang , Yang Xiao Qiang , Shen Jin Xing , Chen Liu Hai
Published: July 2013

For the improvement of reliability, safety and efficiency advanced methods of fault diagnosis, new technology and method such as expert system become increasingly important for many kinds of fault diagnosis. Thereby, the classification principle of system structure is used to build the hierarchical analysis model of combustion engine. The model is converted to binary fault tree by means of Fault Tree Analytical Method (FTA). Meanwhile, the knowledge base is constructed with production rule and frame representation. Fault diagnosis system is designed on the thought of analytical hierarchy process. Its development is accomplished by Delphi 7.0 language. The work has offered a simple and practical tool to users and brings great convenience to engineering corps.
Automatic Furnace Measurement System Based on the Nuclear Scale
Authors: Shi Yuan Ping , Yu Jing Sheng , Zhang Li Qin , Cai Wen Xia
Published: July 2013

Designed a Control Technology in Coal Handling System of Xinji Cogeneration Power Plant, the advanced nuclear scale is to measure the instantaneous flow of two coal conveyor belt, The coal plow and the belt switch signal is collected. Depending on the signal , the coal is accumulated to the different coal bunker. Two belts of coal was send to five different the coal bunker and was accumulated, this is conducive to the analysis of the economic indicators, so to achieve the purpose of power plant energy consumption.
Analysis the Actual Nanostructure of α Phase Polyoctylfluorene Thin Film via Synchrotron Grazing-Incidence X-Ray Diffraction
Authors: Chen Liu Ran , Chen Xi , Liang Ji Cai , Zhang Ji Dong
Published: July 2013

The nanostructure of α phase polyoctylfluorene thin film was characterized using normal X-ray diffraction, one-dimensional out-of-plane grazing incidence X-ray diffraction and two-dimensional grazing incidence X-ray diffraction with lab diffractometer and synchrotron diffractometer. The results show that using grazing incidence X-ray diffraction the weak diffraction signal of thin film can be observed after the elimination of background signals. Incorrect (h10) diffraction signals can be collected by lab diffractometer due to its low collimation and resolution, which can be overcome by using synchrotron diffractometer with high collimation and resolution that reveal the actual microstructure of polyoctylfluorene thin film.
Rheological and Electrical Properties of CB/HDPE Composites
Authors: Chen Xi Liang , Cui Peng , Ji Yan Pei
Published: July 2013

The rheological and electrical properties of composites formed by filling high density polyethylene (HDPE) with carbon black (CB) were characterized. Nonuniversal electrical behavior was observed with critical exponent t of 2.9 for the composites. The phenomenon was interpreted in terms with tunneling-percolation model. The effects of shearing frequency and particle concentration on the rheological behavior of the composites were investigated. A second plateau of storage modulus and strong shear thinning behavior were observed at low frequencies induced by aggregation of fillers. And the rheological percolation threshold is found to coincide well with the electrical one.
The Research on Comparison and Conversion of Two Friction Materials Testing Standards
Authors: Wei Jian Yu , Lu Jian , Liu Qi Bin , Wu Feng , Wang Feng
Published: July 2013

In this paper, the BP neural network nonlinear relationship model of friction coefficient between the GB5763-98 standards and SAEJ661 test specifications has been built, and the model was trained. The prediction results show that by the BP model: forecasts and actual test results are basic agreement; the error size is not more than 0.1.
Study of Structural Changes of Pumpkin Tissue before and after Mechanical Loading
Authors: Shirmohammadi Maryam , Yarlagadda Prasad
Published: July 2013

The texture of agricultural crops changes during harvesting, post harvesting and processing stages due to different loading processes. There are different source of loading that deform agricultural crop tissues and these include impact, compression, and tension. Scanning Electron Microscope (SEM) method is a common way of analysing cellular changes of materials before and after these loading operations. This paper examines the structural changes of pumpkin peel and flesh tissues under mechanical loading. Compression and indentation tests were performed on peel and flesh samples. Samples structure were then fixed and dehydrated in order to capture the cellular changes under SEM. The results were compared with the images of normal peel and flesh tissues. The findings suggest that normal flesh tissue had bigger size cells, while the cellular arrangement of peel was smaller. Structural damage was clearly observed in tissue structure after compression and indentation. However, the damages that resulted from the flat end indenter was much more severe than that from the spherical end indenter and compression test. An integrated deformed tissue layer was observed in compressed tissue, while the indentation tests shaped a deformed area under the indenter and left the rest of the tissue unharmed. There was an obvious broken layer of cells on the walls of the hole after the flat end indentations, whereas the spherical indenter created a squashed layer all around the hole. Furthermore, the influence of loading was lower on peel samples in comparison with the flesh samples. The experiments have shown that the rate of damage on tissue under constant rate of loading is highly dependent on the shape of equipment. This fact and observed structural changes after loading underline the significance of deigning postharvesting equipments to reduce the rate of damage on agricultural crop tissues.
Error Analysis of Displacement Measurements Based on Digital Image Correlation Method
Authors: Lin Si Yuan , Wang Ke , Fan Yue Chen , Yan Tao , He Neng
Published: July 2013

The error of displacement measurements by digital image correlation method is examined from a pratical perspective. Different from previous research, this study focuses on external factors influencing the accuracy of displacement measurement in the study of cooperative mark recognition and camera placement. Our major objectives of this research include indentificating the chief error sources and assessing their influences on the testing results. There are 5 parts in this paper. We start with a brief introduction of the necessity of analyzing the errors. After reviewing the principles of digital image correlation method, an detailed discussion of error soureces of this method is provided. Then we design a pratical experiment measuring the characteristics of a spring vibrator using the digital image correlation mesurement systems and laser displacement sensor. By comparing the results from two ways of measurment, we end the study with the conclusion that the accuracy of displacement measuring by digital image correlation method is tightly related to the choice of cooperative mark and camera intersection angle.
Force Analysis of Ankle Joint when People Standing on One Leg with Overweight and Weightlessness
Authors: Yang Cheng Xi , Yang Zhian
Published: July 2013

Based on Newtons laws of motion, equilibrium conditions of plane force system and ankle joint structural features, a force analysis was made of ankle joint when people leaning forward and standing on one leg and lifted lead with overweight and weightlessness. The results showed that force on the talus when people leaning forward and standing on one leg with overweight is 1.5 times of that in equilibrium and force on the talus when people standing on lifted lead with overweight is 1.3 times of that in equilibrium. The force on the talus in the above two conditions will increase with the increasing over-speed.
Using GPR to Observe the Distribution of Soil Moisture and Reflector in Alpine Meadow of Urumqi Southern Mountain
Authors: Qin Yan Fang , Zhou Ke Fa , Sun Li , Liu Ming Jun , Wang Qian Feng
Published: July 2013

Rapid determination of soil moisture in the arid area has important ecological significance and practical value. This study carried out a series of measurements in the alpine meadow of Urumqi Southern Mountain on April 28th, 2011 right after the snow melt. Ground-penetrating radar (GPR), time domain reflectometry (TDR) were used simultaneously for measuring the soil moisture of a 50 × 50 m2 plot, and a vertical soil profile was dug for validation analysis. The results show that: (1) a clear and continuous reflective layer in the experimental plot can be found from the GPR radar data and have a depth range from 0.362 to 0.656 m, while the GPR calculated average soil moisture above this layer is approximate 0.191 ~ 0.341; (2) TDR derived soil moistures of surface 10 cm and 20 cm depth show a consistent distribution with GPR measurements, and the former is slightly higher than the latter is likely to be due to the snow melt water accumulated more in the surface layer and not transferred immediately to the deep; (3) the vertical soil profile displays a actual compacted layer which is just at same position with the corresponding GRP measured reflective layer, and the TDR measured average soil moisture above this layer is only 0.001 less than the GPR derived data. The results give fully demonstrates to the accuracy of GPR reflected wave model to measure soil reflector and average moisture, which provides a scientific and effective technique for field-scale soil moisture and structure studies.
Discussion and Practice on Teaching Design of the Bilingual Course for Engineering Specialty
Authors: Li Hua , Zhao Jiang Ping , Zhong Xing Run , Li Qian
Published: July 2013

In order to solve the bilingual course engineering professional requirements so that it can meet the professional knowledge and enhance language ability of the teaching goal, through by use of the introduction of anchored instruction strategies to the problem oriented design thinking of bilingual teaching, decomposed several teaching units. The bilingual teaching of safety management can take as an example, the concrete implementation including teaching preparation, teaching process, creating situation analysis, teaching the effect of assessment. We can introduced the concept of knowledge map to constructed the knowledge structure of teaching unit in safety management bilingual curriculum, which contribute to the formation of teacher-student interaction into a good situation during the bilingual teaching.
Effects of E-Government in the Service-Oriented Government Building
Authors: Zhou De Xiang , Hu Zhi Yuan
Published: July 2013

E-government has intrinsic unity of value with service-oriented government, implementing e-government, strengthening social management and public service is an inevitable requirement for building service-oriented government. The effects of e-government in the service-oriented government building manifested through the interaction between government and citizens, government and enterprises and institutions, and governments themselves. E-government can enhance the concept of government services, promote the transformation of government functions, and improve the efficiency of government operations.
The Application of the Electrode Type Water Level Gauge in Reclaimed Water Treatment Control System
Authors: Li Ming Wei , Li Guang Lun , Jiang Ya Zhou
Published: July 2013

The principle and design method of measuring the water level signal based on the multi-channel electrode-type water level gauge were introduced. On the basis of analyzing the characteristic of reclaimed water treatment system, an integrated project design was proposed. The monitor system implemented IPC and PLC, which fulfilled frequency conversion and configuration technology. PC monitor software adopted King View industry control software, which was designed to realize displaying technologic flow, alarming, and historical curve and report forms.
The Detection System of Air Quality for the Decorative Environment Based on DSP
Authors: Xiong Xin Min , Hou Yan
Published: July 2013

In the system, the gas concentration values about formaldehyde, benzene and ammonia are detected by the gas sensors of high precision, high selectivity and its signal adjusting circuit. The digital signal processor (DSP) is used as the core controller. Three sets of three bit digital tubes are adopted to display gas concentration value. Sound and light alarm signals are send out with the light emitting diode and a buzzer. The ventilation device is configured to promote indoor air circulation and reduce pollution gas concentration. In addition, the modular program of the system is written with the assembly language. The system has the advantages of simple operation and stronger practicability.
Development of Analyzer for Field Waterflood System Efficiency Test
Authors: Wu Gang , Fan Bu Xiao , Zhang Shuo , Ye Qiang , Wang Shao Bo
Published: July 2013

Oilfield waterflood system efficiency test set and computation analysis software can monitor real-time electric power consumption of waterflood system and optimize parameters in waterflood activity in time. This test tool adopts chip microprocessor as electric circuit for acquisition of pressure, flow rate and electricity. Wireless transmission applies Bluetooth and GPRS techniques. The computation analysis software has such functions as graphic simulation, efficiency computation, behavior diagnosis and design optimization. The filed application of this tool effectively cuts production cost and achieves the goal of energy saving.
Electrical Measurement System Research by Virtual Instrument
Authors: Zhang Wei Dong , Song Nuan , Cheng Ji Hang
Published: July 2013

This paper introduced an electrical measurement system based on virtual instrument theory. This system uses the design method of component object model (COM) , which makes the software serviced and updated very easily. This system also uses the Access database, introducing the idea of "real-time measuring savings". The whole system doesnt increase much cost, simplify the measuring process and improve the efficiency, achieves the anticipated aims very well.
Study on Identification Method of Rapidity Performance Parameters DEWE 2010 Based
Authors: Dong Guang Ling , Huang Chao Feng , He Chi , Li Qiang , Lu Kun , Dai Zheng Guo
Published: July 2013

Functions and features of servo system are, as well as composition and working principle of DEWE 2010 portable data acquisition system, introduced. Feasibility of using DEWE 2010 data acquisition platform to test rapidity performance parameters of servo system is analyzed. Identification method for rapidity performance parameters is given out by research of rapidity model and signal definitions. Parameters are, such as overshooting, fluctuation number and transferring time, defined for servo system. LabWindows and MATLAB co-programming method is used to realize automatic measurement of rapidity performance parameters. Test results indicate that the measuring accuracy and automation level of this method meet the test requirements.
Virtual Dressing Based on the Kinect Peripherals
Authors: Cai Chen Xi , Liu Ya Xia , Shang Shu Yuan
Published: July 2013

This paper is the design of virtual dressing system based on the Kinect peripherals. The design mainly uses the real-time capture of Kinect somatosensory camera and the image recognition function to realize virtual dressing. This paper includes the introduction which is the use of virtual dressing system based on the Kinect peripherals, the selection of development platform, the function structure of the system, the program structure of design and virtual dressing implementation.
Accuracy Improvement for Scattering-Parameters Evaluating of Microwave Coplanar Probe Using One-Port Two-Tier Multi-TRL Calibration Method
Authors: Huang Hui , Liu Xin Meng , Lv Xin
Published: July 2013

This paper presents a method improving accuracy for evaluating S-parameters (Scattering-parameters) of MCP (Microwave Coplanar Probe). This method may be named one-port two-tier Multi-TRL (Thru-Reflect-Line) calibration method. It measures two-port devices only at one port of VNA (Vector Network Analyzer). It decreases the random errors caused of cable movements and connecting times. This method is implemented with coaxial OSL (Open-Short-Load) and on-wafer TRL calibration kit. It directly calculates and removes the residual errors caused of coaxial OSL calibration kit imperfection. It significantly reduced system errors by using on-wafer TRL calibration kit. To verify the effectiveness of the proposed method, the measured S-parameters up to 50GHz of MCP configured with GSG-100 are given and discussed.
Research on Influencing Factors of Electrostatic Force in a Micro-Force Calibration Device
Authors: Yu Li Juan , Niu Ya Nan
Published: July 2013

In order to accurately measure and trace micro-force, a micro-force calibration device is designed. According to the principle of electrostatic force reproduction, a coaxial cylindrical variable area capacitor is designed. Through the balance between the standard weight and micro-force generated by micro displacement of the two electrodes, the micro-force be measured for traceability. Electromagnetic finite element method analysis results show that the improved capacitor has little effect on micro-force and applicable to the device. The calibration principle and device to the micro-force standards establishment, traceability and transmission is of great significance.
Research on the Coastal Suspended Sediment Movement of Matakong Island in Guinea, Africa Based on Remote Sensing Data
Authors: Cai Yin , Zhao Hong Bo , Zuo Shu Hua
Published: July 2013

A wide range of suspended sediment concentration can be obtained by satellite remote sensing. According to the multi-temporal remote sensing data and quasi-simultaneously surface sediment concentration data, research works on the surface suspended sediment distribution and movement trends of Matakong coastal area, Africa were carried out. The results showed that the suspended sediment concentration of the studied area is not large, and the sediment movement is not active. The sediment source comes from the nearshore shallow flats, where they could be entrained by the wind waves and then diffuses by the tidal currents.
Research the Method of Evaluation Microwave Power Standard Correction Factor Uncertainty Based on the Theory of Electromagnetic Field
Authors: Sun Wei Jie , Cui Xiao Hai , Li Yong
Published: July 2013

Microwave power standard adopts calorimetry techniques to calibrate the effective efficiency of the thermistor mount. Correction factor is the key of calibration thermistor mount.The microwave power standard mainly adopted short-circuited mode to determine the correction factor so far, but it must consider the effects of microwave power absorbed by short plate to thermopile, so the method that how to get the power dissipated in the short plate is the key to calculating correction factor and its uncertainty. This paper presents a new method based on electromagnetic field theory to consider the short-circuit dissipation power. A detailed analysis of its superiority over the traditional method is shown. It reduces the uncertainty of the correction factor reasonably, in other words, reduces the uncertainty of the microwave power standard.
Measurement and Analysis of the Accelerating Propeller Cavitation Noise
Authors: Feng Yuan , Chen Ke , Huang Dan , Tian Jian Hui , Wang Xiao Sen
Published: July 2013

Obtaining valid data of accelerating propeller cavitation noise is benifial for finding the relationship between the ship feature and its radiated sound souce. This paper studies the criteria ruling the measurement of accelerating propeller noise signal in cavitation tunnel, and analyzes the signal model of the measured noise. Based on the signal model, the paper studies the fractional Fourier domain analysis method to extract interested cavitation noise from the measured noise.
A New Technique for the Evaluation of Microcalorimeter
Authors: Cui Xiao Hai , Li Yong , Sun Wei Jie
Published: July 2013

A new technique for evaluating a microcalorimeter is presented in this paper. Its measurement principle is to change a thermistor mounts mismatch status by changing the reference resistance of its power meter bridge, measure a microcalorimeter in different mismatch status so that effective efficiency of the thermistor mount measured by the microcalorimeter can be used as the transfer value. This technique will shorten the measurement time and simplify the assembling procedure, while not reducing the evaluation accuracy. Its measurement principle and a experimental result are reported in this paper.
Measurement of the Pulverized Coal Concentration by Measuring the Time Delay of Ultrasonic with Digital Correlation Method
Authors: Wang Ke
Published: July 2013

The pulverized coal concentration in blast pipe in front of firebox is one key parameter in coal boiler used in a power plant; it will affect the state of burning in firebox. This paper proposes a new digital correlation method to measure the time delay of ultrasonic for measuring the pulverized coal concentration. The principle of measurement is discussed in detail and the measuring system is designed.
Real-Time Data Acquisition System for Remote Vital Sign
Authors: Xue Ru , Wu Zong Sheng , Shao Mei Yun
Published: July 2013

A data acquisition system for remote vital sign is designed. The system detect humans vital signs through the body temperature, blood pressure and pulse sensors ,and transmit them to the microprocessor after processing, then the microprocessor send the data to remote monitoring center on receiving the instruction .The monitoring center analysis the data and decide what and how to do. The monitoring centers can response various change of data rapidly and implement real-time rescue guide according to different situations.
An Overview of Uncertainty in Measurement and Its Application in Ship Hydrodynamics
Authors: Xiao Chang Run , Xu Ya Yun
Published: July 2013

The study of uncertainty evaluation is very important in all measurements. This paper reviews the progress of uncertainty in measurement and some of the most relevant efforts and subsequently demonstrates that the ITTC recommended procedure is a suitable method for estimation of uncertainty in ship hydrodynamics. The results show that ship model tests and CFD would benefit from the adoption of the procedures as the working standard. The idea of its application in Self-propelled Submarine Model is also put forward.
Beam Signal Stretch Method Based on Square Process
Authors: Yang Yong , Leng Yong Bing , Yan Ying Bing
Published: July 2013

Beam signal stretch is significant for bunch-by-bunch position measurement on storage ring in SSRF. This paper deduced a new expression to get beam position according to the relationship between BPM signals and beam position. The simulation has been done to stretch the BPM signal using square processing with matlab/simulink tool. The comparison is given between square process and original difference over sum method(Δ/Σ) using data acquired by oscilloscope and off-line processing.
Analog Implementation of Wavelet Filter Based on Switched Current Circuits
Authors: Hu Qin Chun
Published: July 2013

Scheme for the implementation of wavelet filter using switched-current (SI) circuits is presented in this paper. The circuits are composed of analog filter bank whose impulse responses are the first derivative of Gaussian and its dilations. The transfer functions of the basic wavelet filter can be given by Pade approximation. Therefore wavelet filter can be conveniently implemented by SI circuits. Simulated results indicated a good performance of wavelet filter.
Parameter Estimation Method of the Non-Cooperative Radar Target Based on Fractional Fourier Transform
Authors: Guo Hua Ling , Zheng Bin , Liu Li Ping
Published: July 2013

To solve the effect of the range imaging broadening, the speed estimation of high-speed non-cooperative target of inverse synthetic aperture lidar translated for the estimation of the frequency modulation slope. A parameter estimation method of fractional Fourier transform (FRFT) was presented. This method could effectively estimate the frequency modulation slope. Under low SNR, the error of the estimate was less than 0.03. The research laid the foundation for velocity compensation and 2-D range-Doppler imaging of the follow-up.