bluuebunny/crossref_metadata_2025 huggingface dataset:
Customized Software Tools Integrated in Reverse Engineering Process of Rectangular Parts with Holes
Authors: Oancea Gheorghe , Manolescu Alexandru , Bădan Iulian , Pescaru Roxana
Published: August 2013

This paper presents how in the Reverse Engineering process can be integrated specific software tools, developed by the authors, which allow for digitized rectangular parts with internal surfaces of revolution, to obtain solid models and CNC program. The first tool named Rotational Axis Primitives and Recognition has implemented a set of algorithms and it is used for recognizing, from a cloud of points associated with a rotational part, the axis and geometrical parameters. The second tool named Hole_Application is created for forward engineering and it can be used to design and manufacture the industrial products with rectangular shape using intelligent technological objects for holes.
Designing an Innovative Face-Milling Cutter
Authors: Brîndaşu Paul Dan , Oniţă Gabriel Vasile , Beju Livia Dana
Published: August 2013

The paper consists in a research in the design of an innovative face-milling cutter, in terms of product lifecycle management (PLM), with the help from creative design methods, such as TRIZ. The model of the lifecycle management of the cutting tools was presented, emphasizing the functional analysis and creative design phase. Based on this analysis, a new constructive variant of the milling cutter was designed and simulated with finite element method, highlighting its advantages compared with classic construction variants.
Studies about Movement Biofidelity of a Dummy Neck Used in an Impact Testing Device
Authors: Ciunel Stefanita , Popa Dragos Laurentiu , Dumitru Nicolae
Published: August 2013

The paper presents the studies made on a similar biomechanical system composed by neck, head and thorax bones. The main movements analyzed were: axial rotation (left-right), lateral bending (left-right) and flexion-extension movement. After simulation was obtained the entire mechanical behavior based on data tables or diagrams. The models were defined in a CAD environment which includes Adams algorithm for dynamic simulations. The virtual models were obtained starting with CT images made on a living human subject. That virtual model composed by neck and head can be included in complex system (as a car system) and supposed to impact simulations (virtual crash tests). Also was developed a mathematical model based on Lagrange equations for a frontal impact testing cervical system. Our research team built main components of a testing device for dummy car crash neck-head system using anatomical data.
Assessment Procedure of Technological Consumption in the Natural Gas Distribution Systems
Authors: Pană Ion , Minescu Mihail
Published: August 2013

This paper proposes a procedure of calculus of the technological consumption, usefully for the operators of the natural gas distribution systems. It also sets, based on a statistical study, the minimum possible value of the technological consumption for the operators of natural gas distribution in Romania. There are indicated the environmental issues resulting from the technological consumption and the measures to control and reduce it.
A Study of an Ion-Drag Pump Characteristics
Authors: Ostahie Constantin Narcis , Sajin Tudor
Published: August 2013

In this paper is made an investigation of an ion-drag pump, using a needle-electrode configuration. Numerical calculations and modeling simulation are made for this electrohydrodynamic pump, with the mean to simulate, determine and analyze the liquid pressure, velocity and pump efficiency. The obtained results from simulation are compared with the results obtained by numerical calculations. An analysis of pump efficiency is made based on these results.
Influence of Microtube Heating Geometry on Behavior of an Alumina Nanofluid at Low Reynolds Numbers
Authors: Minea Alina Adriana , Luciu Razvan Silviu , Manca Oronzio
Published: August 2013

A numerical program is employed to solve two-dimensional continuum-based governing differential equations for liquid flow in axisymmetric circular microchannel geometry. The effects of variable thermal properties in single-phase laminar forced convection with constant wall heat flux boundary conditions are studied. The numerical analysis of fully developed flow behavior investigates the effect of tube length on convection characteristics. The governing equations were discretized using the control volume method and solved numerically via the SIMPLE algorithm. Water - Al2O3nanofluids with different volume fractions ranged from 1% to 3% were used. This investigation covers Reynolds number in the range of 500 to 1500. The results have shown that convective heat transfer coefficient for a nanofluid is enhanced than that of the base liquid. Wall heat transfer flux is increasing with the particle volume concentration and Reynolds number. Moreover, a study on microtube length influence on heat transfer was attempted and few correlations were established. As a conclusion, a 6-11% decrease in heat transfer enhancement was noticed when the tube length is increasing in laminar flow.
Modeling of Railway Vehicles for Virtual Homologation from Dynamic Behavior Perspective
Authors: Dumitriu Madalina
Published: August 2013

Modeling and simulation in railway vehicle dynamics is a useful tool in the design of rolling stock when choosing the best solutions for vehicle and infrastructure components in assessing possible risks and, more recently, in the certification of railway vehicles from the point of view of dynamic behavior based on virtual approval. This paper presents the discrete-continuous model of two-level suspension passenger car running along a tangent track with random vertical irregularity as the theoretical tool to asses the parameters of the approval criteria: the running behavior and comfort. The equations of motion are solved in frequency-domain using the modal analysis method and then the carbody acceleration and the comfort index are calculated. The results derived from a numerical simulation performed for the virtual homologation of a particular passenger car are presented, and so is the possibility to improve the design of the vehicle suspension, in compliance with the approval criteria.
Heat Transfer Modeling for a Plate Heat Exchanger used in Solar Power Systems
Authors: Ivancu Ionel , Stanciu Dragomir Daniel , Crismaru Vasile Ionut , Dumitrascu Gheorghe
Published: August 2013

The paper tackles the non-steady state heat transfer modeling in a plate heat exchanger. The heat exchanger is designed to perform the internal heat recovering in a solar assisted Joule Brayton engine. The modeling followed two cases, the first case considers an open hybrid solar engine and, the second case evaluates a closed one, using different working agents.
Management and Assessment of Curricula in Technical Higher Education
Authors: Modrea Arina Florenţa , Peterlicean Andrea
Published: August 2013

The experience in teaching in engineering learning contexts has lead to the idea to study in depth this theme Curriculum evaluation in the field of engineering due to the acknowledged real life situations in our current practice. This paper wishes to create a modern vision of this important stage of the teaching and learning process in the field of engineering. This is to say, through the establishment of the ideal stages in the design and administration of an assessment test. Last but not least, similarly to the education process where there is no real unique recipe to approach education in the assessment process no unique recipe can be given. This works on a situation-based basis so as to indeed be one of the real instruments that help us improve the added value in the context of the entire educational process. In conclusion, the novelty brought about is that assessment in any field of education, in engineering also, must be regarded as a specific part of the educational field, where all factors psychological and material that are characteristic to the instructive and educational activity are taken into consideration.
The Role of Internship in Transversal Competence Development of Industrial Engineering Graduates
Authors: Ionescu Nicolae , Doicin Cristian , Roşu Magdalena
Published: August 2013

In the context of implementation of the European Qualifications Framework (EQF) in Higher Education Area, building and assessment of skills in general and of transversal competences in particular is a key issue, which has not been entirely resolved yet. This paper presents a methodology developed by the authors, which refers to the contribution of the practice to building the transversal competences in graduates of higher education technical institutes, applied during a three-year program involving a relatively large number of students. Identifying the contribution of practical internship schemes to the acquisition of transversal competencies is an essential component of the overall evaluation of such skills. The results have shown that graduates who took part in special internship programs have attained a higher rate of insertion in the labor market. Moreover, the practical experience gained during bachelor study programs represented an important premise for the development of EQF level 7 transversal competences of the graduates enrolled in different Master programs.
Creative Teaching Methods for Educating Engineers
Authors: Grecu Valentin , Deneș Calin , Ipiña Nagore
Published: August 2013

Active learning has received considerable attention over the past several years. Often presented or perceived as a radical change from traditional instruction, the topic frequently polarizes academic staff. Todays students are bombarded with plenty of information and are distracted by technology gadgets (such as smart phones) or suffer from attention deficit disorder [10]. Thus, academic staffs are challenged to capture students attention and to engage them in the didactic process. The paper presents two innovative teaching methods experimented in the seminaries of the Production Planning course that has been taught at the Faculty of Engineering of Lucian Blaga University of Sibiu and the impact of these methods on the students knowledge assimilation and academic performance. The proposed teaching methods, namely charades games and movie making activities, were implemented and evaluated. The research tools used for this study were: direct observation, comparative analysis of students academic performances, before and after the implementation of the methods, and course evaluation forms, filled in by the students. The experimented teaching methods were considered by the students both fun and challenging and were confirmed as promising pedagogies. Thus, we recommend that active learning techniques, such as charades games or movie making activities, be used in conjunction with traditional lecture formats in university courses. These activities show promise as active learning techniques which foster student interest, help students apply material to real world situations, and may be remembered by students well after the course ends.
Safety Evaluation of the Pipelines Systems for Petroleum Products
Authors: Minescu Mihail , Pană Ion
Published: August 2013

The methods of assessment of the limit state of failure of the pipelines from transport systems are characterized by high safety factors. The current trend is that by more accurate calculation methods, structured on several levels and based on the information about the factors involved in the evaluation process (material characteristics, pipeline thickness, operating pressure and their range of variation, the precision of the used investigation method, the security class of pipeline) these safety factors may be reduced. The mentioned aspects can be found in many papers and in the recent versions of standards DNV RP 579 and API 101. The paper shows the importance of considering the defect position to reduce the level of conservatism of the method of evaluation. This is possible in the modern methods of inspection which indicates the position of the defect. Based on the results of an inspection we can calculate the probability of failure of a pipeline and it can be an indicator of pipeline safety instead of the actual indicator expressed by the number of defects per km established by the operator or by the third parties. Any inspection of a pipeline has to be followed by a maintenance program based on available information. In this case, even if we have to emit certain assumptions and approximations (such as neglecting the interaction between the defects), the repairs of a pipeline may be indicated at the right time to maintain the safety in the operation.
Increase of Firmness of Milling Cutters with Variable Cutting Velocities along the Length of Teeth Cutting Edges
Authors: Al-Sudani Tarafa , Mikhaylov Aleksandr , Dolhykh Hanna , Selivra Sergey , Sahbi Zantour
Published: August 2013

Milling operations are widely used for manufacturing of various parts in machine building. For such operations milling cutters of different design are used [1,2,3,4]. Milling cutters with special cutting section are employed for treatment of parts having contoured surfaces, dove-tail and circular slots and the like. These milling cutters possess variable cutting velocities along the cutting edge of the tooth.
Application of Fuzzy Logic in Design Failure Mode and Effects Analysis
Authors: Belu Nadia , Anghel Daniel Constantin , Rachieru Nicoleta
Published: August 2013

Failure Mode and Effects Analysis (FMEA) is one of the basic and the most used techniques of quality management that is used for continuous improvements in product or process designs. While applying this technique, determining the Risk Priority Numbers (RPN), which indicate the levels of risks associated with potential problems, is of prime importance for the success of application. A traditional RPN is obtained as product of three risk factors: occurrence, severity and detection. Values of these factors are generally attained from past experience and this way of risk assessment sometimes leads to inconsistencies and inaccuracies during priority numbering. Fuzzy logic approach is considered a promising solution in order to give a more accurate ranking of potential risks. This paper presented a fuzzy model, in order to assess and rank risks associated to failure modes that could appear in the functioning of a headlining product used in automotive industry.
Intangible Assets Identification and Valuation in a Company
Authors: Gogan Luminita Maria , Draghici Anca
Published: August 2013

Intangibles have emerged in the last decade as an important issue among companies accounting theories. Accounting, as it is currently practiced, has lost much of its ability to inform as businesses have become more and more knowledge intensive. Intangible assets are now variously estimated to currently constitute 60-75 percent of corporate value, on average. In this context, the purpose of this paper is to present an analysis of the most known intellectual capital evaluation model, according the following criteria: concepts, functional characteristics, operational performances, limitations. Then intellectual capital was analyzed in the case of X Company. As a conclusion we can say that intelactual capital assessment capital makes a company more efficient, more profitable and competitive.
PLM Innovation Matrix for a Complex Product Development Process
Authors: Popa Luminita I. , Popa N. Vasile
Published: August 2013

PLM is a transformation strategy built on shared access to a single knowledge base, data and processes related to our products. This strategy allows us to grow and to control the rate of change of products or degree of innovation. The purpose of this paper is to find out the importance of innovative processes on Product Lifecycle Management (PLM) integration strategies with the objective to help companies to answer to the main market needs. In the case study we propose to analyze the innovation potential influence over electro-mechanic manufacturing process considering its specific tools. To exemplify our researches we approached the PLM as a multi-dimensional topic and we intent to explore the innovation complex metrics dimensions and help the reader gain a broad perspective of PLM in the Romanian industry. By using this approach, we can score, weight and prioritize customer assessment for different stages of product development process and to take in consideration the most likely changes that will improve the process. There are identified and assessed five innovation complex metrics used in PLM process stages within a complex Product Development Process. Also, based on this metrics, we create and and analyze "PLM innovation matrix" and a related chart.
Horizontal versus Vertical Heat Distribution in Multi-Storey Buildings
Authors: Lefter Răzvan Corneliu , Popescu Daniela
Published: August 2013

The paper studies the effects of implementing international policies on individual metering of consumers supplied from district heating systems. The work compares case studies on horizontal and vertical distribution of space heating into multi-story buildings. Moreover, the effect of hydronic balancing by valves and differential pressure regulators is in the focus. The results of the paper point out that pressure losses in a horizontal balanced distribution network are lower than in a vertical balanced distribution network. Concluding, horizontal distribution is both energy efficient and in accordance to sustainability recommendations concerning fair distribution and metering of heat.
Effects of Shrinkage Reducing Admixture (SRA) on the Tensile Behavior of Strain-Hardening Cement Composite (SHCC)
Authors: Han Seung Ju , Kim Hye Ran , Yun Hyun Do
Published: August 2013

This research investigates the influence of shrinkage reducing admixture (SRA) on the tensile behavior of strain-hardening cement composite (SHCC). SHCC materials with specified compressive strength of 50MPa were mixed and tested. All SHCC mixes with different dosage of shrinkage reducing admixtures were reinforced with 2.2 % polyvinyl alcohol (PVA) fibers at the volume fraction. A special SRA, i.e. strontium (Sr)-based SRA, used in this study was based on a phase change material (PCM) that has the ability to absorb or release the hydration heat of cement composite. This paper focuses on the tensile behavior and cracking characteristics of SHCC materials under direct tension. The effect of a special SRA on the fresh properties, such as flow and air content, and hardened properties of SHCC materials was investigated. Test results showed that SRA reduces the air content of SHCC material. The SRA can also improve the tensile strength of SHCC material.
The Calculation Method of Axial Force in the Calculation of the Boom Tower Crane Stability
Authors: Li Bin , Xu Li Ze , Tao Xin , Jin Jiu Fu , Zhang Yan
Published: August 2013

The concept of equivalent stiffness and equivalent negative stiffness is introduced in this paper, established the equivalent relationship between the force acting on the middle of variable cross-section column and the force acting on the top of constant cross-section column on boom tower crane lifting plane and slewing plane by the equivalent stiffness law and the equivalent negative stiffness method, The force on the middle of column is converted into the force on the top of column by the equivalent relationship.
Control Problems for Heat-Conducting Viscous Fluid Flow in Manufacturing Processes
Authors: Alekseev Gennady V. , Tereshko Dmitry
Published: August 2013

This work is concerned with control and inverse problems for the Oberbeck-Boussinesq model of heat convection. Optimality system describing the first-order necessary optimality conditions is deduced. Numerical algorithm based on Newton's method is proposed.
ANFIS Modelling of Carbon Removal in Domestic Wastewater Treatment Plant
Authors: Gaya Muhammad Sani , Wahab Norhaliza Abdul , Sam Yahya M. , Anuar Azna N. , Samsuddin Sharatul Izah
Published: August 2013

Modelling of an ill-defined system such as the wastewater treatment plant is quite tedious and difficult. However, successful and optimal operation of the system relied upon a suitable model. Most of the available developed models were applied to industrial wastewater treatment plants. This paper presents adaptive neuro fuzzy inference system (ANFIS) model for carbon removal in the Bunu domestic wastewater treatment plant in Kuala Lumpur, Malaysia. For comparison feed-forward neural network (FFNN) was used. Simulation results revealed that ANFIS model is slightly better than the FFNN model, thus proving that the model is a reliable and valuable tool for the wastewater treatment plant.
Fault Tolerant Scheme of Switched Reluctance Machines for the Electro-Mechanical Actuation Systems
Authors: Chen Xiao Yuan
Published: August 2013

As switched reluctance machines (SRM) generally offer a simple and robust design, they are very suitable for electromechanical actuation systems which need to be actuated by fault tolerant drives. This paper investigates dual-channel, dual-redundancy, lacking phase schemes of SRM guaranteeing fault tolerance and the corresponding control systems in detail are compared to point out the advantages and disadvantages of them., a new lacking phase scheme for 12/8 SRM is proposed and the finite element model based on field-circuit coupling is established, results indicate that this scheme have superior fault tolerant performance and suit tasks in electro-mechanical actuation system of aerospace environments.
Robust Fault-Tolerant Control for Singular Bilinear Systems with Markovian Jump Related to Output Feedback
Authors: Dong Ming , Wang Li Shi , Wang Shou Bin
Published: August 2013

In this paper, output feedback controller is applied to solve robust fault-tolerant problem for singular bilinear system with Markovian jump. The aim of this problem is to design a output feedback controller that ensures stochastic stability of the closed-loop system and the -induced gain from the noise signal to the estimation signal remains bounded by a prescribed value, whether the actuators are normal or abnormal. The controller can be constructed by solving a set of linear matrix inequalities. An illustrative numerical example is given to demonstrate the applicability of the approach.
Multiple Models Based Detection of Transient Faults for Networked Control System
Authors: Yang Ming Yue , Huang Xiong Feng , Huang Shuang , Zhou Chun Jie
Published: August 2013

Transient faults are the dominated kind of threats to operation safety in networked control systems (NCSs), and the runtime detection of them is difficult but a key point in fault tolerance design. In this paper, a novel transient fault detection approach is proposed based on multiple system models. System models are established to show how system works in teleological, functional, behavioral, and structural viewpoints, and operational constraints of the models are set up to capture the runtime violation in which the faults are indicated. A case is presented to investigate the using processes of the proposal and the results show that the transient faults are detected efficiently online.
Research on Angle Measurement of Loader's Steering-by-Wire System
Authors: Zhao Hai Xia , Lv Zhi En
Published: August 2013

The loader's steer-by-wire system combines the automatic control system and hydraulic system. The system cancels the mechanical or hydraulic connection between the steering wheel and the front wheels, which existed in the original steering system, optimizing the adaptation of the loaders steering systems road feeling to its working conditions, convenient for the integration with other systems, and harmonization of control. This paper puts forward a new measurement of a steer-by-wire system steering angel. It aims at more accurate corner detection, will design to optimize loader's steer-by-wire hydraulic system signal detection, and better meet the actual needs.
Control System of Permanent Magnet Synchronous Motor of the Treadmill
Authors: Chen Hong Nian
Published: August 2013

According to the characteristics of pulse-load torque of the treadmill, the key technical problems of drive control system in the treadmill with a permanent magnet synchronous motor (PMSM for short) are analyzed. The internal disturbance and external disturbance in the system are observed using the extended state observe (ESO for short) and the system is compensated using the auto-disturbance rejection controller (ADRC for short). The simulation results show that ADRC has better dynamic performance and better robustness to the load disturbance and the motor parameter variation.
Research of Integrated Design about Guidance and Control of Homing UAV
Authors: Cao Jian , Yan Cong , Liu Li
Published: August 2013

Integrated design about guidance and control of homing unmanned aerial vehicle (UAV) is proposed. Firstly, an integrated guidance and control model with uncertainties can be described. Secondly, a nonlinear observer is designed for the integrated guidance and control model. Finally, the simulation results show that the nonlinear adaptive guidance law using the proposed integrated design model can perform better than the one designed separately.
The Optimal Partitioning Strategy for Online Verification Based on GN Splitting Algorithm
Authors: Liu Gao Ming , Song Wei , Qiu Xiang Dong , Zhang Yong Hao , Zhou Qing Jie
Published: August 2013

In order to improve the online verification calculation speed of relay settings and solve the defects of traditional partition method, which is difficult to measure the reasonable of partition results and unable to determine the optimal number of partitions. An optimal partitioning strategy of power grid based on GN splitting algorithm is presented in this paper. The initial partition of power grid was achieved through effectively utilizing the maximum edge betweenness and the optimal number of partitions was determined by calculating and comparing the weighted modularity. Then through defining a quantitative metric of checking calculation time and regarding as the optimal objective, the boundary nodes were migrated and the optimal partition was achieved. Through calculating and analyzing the 500kV network of Zhejiang grid, the results show that the method is correct and effective.
Study on Trackless Tyred Vehicle Intelligent Scheduling System Base on Time Response
Authors: Guo Feng , Gao Feng , Ma Hong Gang , Guo Shuai
Published: August 2013

According to traffic jam problem in the tunnel, we study and design an analysis method of roadway transportation line which is suited of trackless tyred vehicle system underground coal mine, Through detailed analysis for traffic jam problem by trackless tyred vehicle in the tunnel, we designed automatic control algorithm for trackless tyred vehicle haulage system underground coal mine and designed the intelligent scheduling system, and solved the trackless tyred vehicles traffic problems.
An Efficient Routing Algorithm for Average Distance of Directed Triple Loop Networks
Authors: Li Ying , Chen Ye Bin , Chen Tao
Published: August 2013

Used equivalent tree to construct the minimum distance diagram of triple loop networks and found the relationships between the layer of the equivalent tree and the shortest path of any two points in triple loop networks, and provided a formula to compute its average diameter. The experimental results show that average diameter approaches to a half of the diameter at the same network, in one infinite family, the diameter must obtain minimum value when average diameter obtains the minimum value, but the inverse is not. Studies also show that average diameter is the better parameter to measure transmission efficiency about loop networks instead of diameter.
The Research of Cloud Platform Based on KNN Collaborative Filtering Algorithm in Fruits Marketing System
Authors: Luo Li , Gao Xiao Ling , Wu De Jun
Published: August 2013

With the development of internet, we usually hope to recommender the possible interested products to the consumers through analyzing to the consumers history records, and obtain better sale records in fruits marketing system. collaborative filtering algorithm is widely used in Fruits Recommendation System, and item-based KNN collaborative filtering algorithm completes clustering and recommendation through analyzing the similarity of the items. Traditional item-based KNN collaborative filtering algorithm could not deal with huge scale fruits sale data effectively to complete recommendation work. In this paper, for the large scale data, we propose a distributed item-based KNN collaborative filtering algorithm based on MapReduce cloud computing platform. The experimental results show that the algorithm has a high speed-up, and a good expansibility.
Birthday Distribution Problems
Authors: Li Man , Zhang Zhi Gang
Published: August 2013

Based on the distinguishable ball-into-box issue, this paper started from a seemingly simple ball and extended to the question of birthday frequency distribution, i.e. people birthday in different dates probability distribution and the distribution law. In addition, the value was obtained by Monte Carlo simulations with different frequency distribution birthday days, finally when frequency simulation is large, achieving the theoretical value of the frequency values to estimate the probability,and the corresponding distribution can be obtained.
Development of the Novel Embedded Planetary-Screw Extruder
Authors: He Liang , Xu Bai Ping , Yu Hui Wen , Wang Xiao Long , Xue Gang
Published: August 2013

The novel second-generation embedded planetary-screw extruder prototype was successfully developed in the paper which had eight small planetary-screws and had the excellent degassing function. The numerical simulation of the three-dimensional flow and mixing in the metering zone was carried out for different screw configurations to determine the effect of the number of the small planetary-screws using CFD finite volume method technology. We improved the screw combination of the second-generation prototype according to the simulation results as well as the experimental investigations on first-generation embedded planetary-screw extruder we developed some years ago. The second-generation prototype can effectively improve the axial transport capacity and increase output of the extruder when compared with the first-generation prototype. The novel second-generation prototype can expand the scope of application and can improve the quality of processing material. The novel embedded planetary-screw extruders have a better application prospect.
Research of Internal Combustion Engine Piston Skirt Profile Line Effect Based on Dynamics and Tribological Coupling Model
Authors: Zhou Xiao Rong , Song Meng Tian , Cai Gan Wei
Published: August 2013

This paper mainly based on the coupling relationship between tribological and dynamic behaviors of cylinder liner-piston system to establish dynamics and tribology coupling model of cylinder linerpiston-piston ring, and to analyze the effect of piston skirt profile based on it, providing theoretical basis for determining the effect of piston skirt profiles to piston dynamics and lubrication performance.
A Method for Generating Customizable Coordinate Axes in AxSceneControl
Authors: Xia Jin Song , Yang Guang Hui
Published: August 2013

Coordinate axes have been used extensively in three-dimensional (3D) GIS processing to help visualize the location of points directly. Meanwhile, AxSceneControl is a visual control provided by ESRI®ArcGIS®Engine, which is suited to generating perspective scenes that allow user to navigate and interact with 3D feature and raster data. However, there is no direct solution given by ArcGIS Engine to set Coordinate axes in 3D scenes. In this paper, we proposed and implemented an approach to generate and customize coordinate axis in AxSceneControl. By this method, up to five coordinate axes, named as x axis, y axis, z axis, top axis and right axis, can be drawn based on the layer that is loaded to the AxSceneControl. Furthermore, users can modify the properties of coordinate axes such as changing the style of degree scale, determining which axis will be shown and resizing the degree density to achieve simple coordinate axis.
A Combination of Chaos and Blind Source Separation for Image Encryption
Authors: Chen Juhn Horng , Sheu Long Jye , Tung Tzu Yi , Chen Hsien Keng , Chiou Horng Shing , Weng Wei Tai
Published: August 2013

We propose a new perspective on image encryption using chaotic signal and blind source separation. The original image is permuted by the chaotic signal and then mixed with key images. In the receiver, blind source separation technique is used to separate the components of the original image from the ciphertexts. Then chaotic signal is again used to restore the pixels to recover the original image. The experimental results demonstrate that the key space is large enough to resist the brute force attack and the distribution of gray values of the encrypted image has a random-like behavior.
Single Image Defogging Algorithm Based on Sparsity
Authors: Su Cheng , Zhang Yuan Biao , Luan Wei Xia , Wei Zhi Xiong , Zeng Rui Ming
Published: August 2013

In order to deal with the influence of adverse weather (such as dust fog) over vision system of the outdoor machine, this paper proposes a real-time image defogging method basing on sparsity. This method estimates the radiation intensity of airlight based on the dark channel prior statistical law and adopts sparse decomposition and reconstruction to figure out the atmospheric veil, taking advantage of the sparsity of this issue. By solving the equation for imaging based on the atmospheric scattering model, we can obtain the atmospheric radiation intensity under the ideal condition and succeed in image defogging. Experimental results show that this method can effectively improve the degradation of image in adverse weather (foggy) and raise its sharpness.
The Projection Keyboard Based on the Image Processing
Authors: Sun Bin , Ding Ji Feng , Su Li De , Zhong Yi Lian , Yin Yu Yan
Published: August 2013

We proposed a new application of image processing in this article. Combined with image segmentation, reducing and effective localization algorithm to recognize the user s input, show the key value on the screen.
Analysis and DEM Simulation on the Interaction Characteristics between Lunar Soil and Coring Drill
Authors: Hou Xu Yan , Zhao De Ming , Cui Jin Sheng , Tang Ting Wu , Quan Qi Quan , Wu Xiang , Deng Zong Quan , Jiang Sheng Yuan , Tang De Wei
Published: August 2013

The interaction characteristic between lunar soil and coring drill is studied in this paper. According to the failure forms of lunar soil, the stress area is divided into two parts, central failure area and lateral failure area. The impacts of different drill parameters on cutting force are obtained by a rotary cutting model. And the process of lunar soil coring is simulated basing on a special built DEM (discrete element method) model, which accord to the special mechanical properties of lunar soil. By analyzing the simulation results, the correctness of the cutting model is proved.
The Design of Wireless Sensor Network System for the Subway Environment Monitoring
Authors: Yuan Zhong Hu , Yu Xiu Zhen , Hua Wen Wu
Published: August 2013

This paper has designed a wireless sensor network (WSN) system which is suitable for the subway security environment. The system uses ZigBee wireless communication technology to form a network, uses the chip CC2530 as the core processor to design the hardware circuit for the network node, and the design of the embedded software is based on Z-Stack protocol stack. Through analyzing the factors having affection on the security environment, the system collects a variety of environmental information with some sensors, and completes the design of the sensor modules. The test results show that this system has the characteristics of low-power, low-cost and high reliability.
An Autopilot Fault Diagnosis Method Based on Hybrid Case and Fault Trees
Authors: Zhang Jing Kai , Li Peng Hui , Liu Xiao Xiong , Zhang Wei Guo
Published: August 2013

Targeted at the faults of autopilot in fly-by-wire flight control system, a method based on integration of case and fault tree is proposed to quickly diagnose faults and provide the maintenance of autopilot system. In the process of diagnosis, according to the characteristics of fault information about autopilot system, the Build-in-test data was used to quickly search similar fault in the case base and accurately point out the fault location. For complex fault, the fault tree method is used to traverse to complete the reasoning and diagnosis procedure, and simultaneously add the results to the case base. The simulation results show the method is achieved.
Design of Residential Security Intelligent Monitoring System
Authors: Wang Yong Qiang
Published: August 2013

The house safeguard includes residential buildings earthquake prevention, fire protection, underground parking, public regional environment, and residential internal safeguard, e.g.. The house safeguard intelligent monitoring system focuses on improving the humanistic environment and building a harmonious society.
Early Flame Detection by Using Dynamic Accumulated Model
Authors: Wang Lin , Li Ai Guo
Published: August 2013

In order to solve the problem of early fire detection in the large space, a dynamic accumulated model is presented. The motion object is firstly obtained by using adaptive background subtraction. Three combined rules for flame detection are utilized. Dynamic accumulated model is implemented to compute the edge flicker of the motion object. Two features including circularity and area change are utilized to distinguished flame from other moving object. Experimental results indicate that the presented method has quick respond and can be used in outdoor environment.
Weighted Measurement Fusion Kalman Filter for Multisensor Descriptor System
Authors: Dou Yin Feng , Qi Wen Juan , Ran Chen Jian
Published: August 2013

For the multi-sensor descriptor system with correlated measurement noises and same measurement matrix, the reduced-order sub-systems are obtained, applying singular value decomposition method. And measurements of every sensor are transformed to the measurement of one state component. For this new reduced-order normal system, the new fused measurement can be obtained applying the weighted least squares method. Then, the weighted measurement fusion Kalman filter and its filtering error variance are presented, applying a single Kalman filter. This method avoids computing the cross-variances among all local filters, compared with the state fusion Kalman filtering algorithm. And the accuracy of this fused filter is higher than that of local filter and state fusion Kalman filter. A simulation example verifies its effectiveness.
Research on the On-Line Monitoring System for Partial Discharge of Cable Joint
Authors: Li Yan Qing , Jia Zi Hang , Zhao Liang , Liang Jian Feng
Published: August 2013

This paper introduces an on-line monitoring system for partial discharge of 10kV cable joint based on LabVIEW. It calculates transfer characteristic of wideband current transformer for monitoring partial discharge current after analyzing the mechanism of production of partial discharge. The proposed current transformer can restrain the noise signal efficiently in electromagnetic induction part. Since the on-line monitoring system was installed in transformer substation, the LabVIEW monitoring platform can keep a lookout over partial discharge current of cable joint constantly. It can monitor the cable joint accurately.
Microstructure and Mechanical Propertiesof Ti/Cu-Cr/S20C and Ti/Cu-Ag/S20C Clad Composites
Authors: Ha Jong Su , Hong Sun Ig
Published: August 2013

In this study Cu-Ag or Cu-Cr layer was sandwiched by Ti and Fe plates and the three layers of Ti/Cu-8Ag/S20C were clad by High Pressure Torsioning(HPT). The effect of post-HPT heat treatment on the interfacial reaction products and the mechanical performance in Ti/Cu-Ag/S20C and Ti/Cu-Cr/S20C clad material were studied. Cu4Ti3 and Cu4Ti Intremetallic compound layers were observed at the Ti/Cu-Ag and Ti/Cu-Cr interfaces in the clad heat-treated at 500°C where as no intermetallic compounds were observed at the Cu-Ag/S20C and Cu-Cr/S20C interfaces. The strength of as-HPTed Ti/Cu-8Ag/S20C is much higher than that of Ti/Cu-1Cr/S20C. The strengthening mechanism of Cu-Ag deformed severely is the interface and strain hardening in which dislocations are deposited at the Cu/Ag interfaces and can contribute to the strengthening of the clad composite just after HPT processing, rendering the high strength just after processing. In both clad composites, the strength and ductility increased after heat treatment at 350°C, which are likely caused by the enhanced bonding at the interfaces.
Using Genetic Algorithm for the PID Control of Voice Coil Actuator in A Precision Locating System and Simulation
Authors: Zhang Wu Jun
Published: August 2013

Precision manufacturing is very important in the modern industrial manufacturing. Voice coil actuator (VCA) is the actuator, which directly change the signal of electricity to movement. We devised a form of precision locating system driven directly by VCA and apply gas static pressure bracing to substitute rigid bracing by mechanical contact. PID Control is widely used to control the system, but the parameters of PID control hard to be get out. Genetic algorithm is imitate living creature environment in of a kind of orientation overall situation of the genetic, can be professional at solving complicated system or the huge problem and it acquired a success application in many industrial engineering realms and had already got extensive concern. Thus, we use genetic algorithm to find the right parameters of PID control. As a whole, in this paper we introduce the genetic algorithm, analyze the control model of precision locating System, discuss using the Genetic algorithm to find the right parameter to control the precision locating System of voice coil actuator, the simulation is give out.
Dyeing of Blended Fabric with Pigment
Authors: Zhang Zeng Qiang , Wu Ying
Published: August 2013

In recent years, the studies of the pigment dyeing have gained more and more attention since it is directly related to environmental protection. The Pigment Dyeing is one way, which fabrics modified by cationic modification were dyed with pigment. The aim of this research is to study the pigment dyeing process of selected blended fabrics by measuring the K/S value in order to get the optimum process for different dyeing conditions. It is found that the K/S value property of the dyed fabrics is influenced by blinder concentrations, pigment concentrations, dyeing time, dyeing temperature. Through the data fitting and correlation coefficient, we can observe the optimum process conditions were as follows: blinder 5~10g/L, pigment 16~20g/L, temperature 60~70and dyeing time 50~70mins.
Study on Numerical Simulation Method of Aerodynamic Performance of High-Speed Train on Bridge
Authors: Xiang Chao Qun , Guo Wen Hua , Zhang Jia Wen
Published: August 2013

The dynamic mesh method that could simulate the actual moving of train was used to calculate the aerodynamic coefficients of train on bridge with wind barriers of various heights, and the static pressure distributions around the train body and velocity magnitude distributions were analyzed, the results computed by dynamic mesh method were compared with that computed by traditional static mesh method. The results show that the aerodynamic coefficients of train and flow field characteristics computed by the two methods agree well under the configuration without wind barriers. However, there is considerable difference between the results computed by the two methods with the installation of wind barriers. It is found that the dynamic mesh method is more reasonable to simulate the aerodynamic coefficients of train with wind barriers by analysis of the contour of static pressure distributions and velocity magnitude distributions. The wind barriers effectively decrease the positive pressure on windward train body and negative pressure on train roof, mainly reduce the side force coefficient, lift force coefficient, rolling moment coefficient. Therefore, the aerodynamic performance of train on bridge under crosswind is improved.
PV Array Mathematical Model Optimization Based on Monitoring Data
Authors: Zhong Qian Wen , Xu Yang , Yang Jie , Meng Zhuo
Published: August 2013

The type of Solar panels in photovoltaic power generating system is generally photovoltaic array. On the basis of the photovoltaic array mathematical model for engineering , using the mathematical software MATLAB Simulink tool to build a photovoltaic array simulation model and utilizing monitoring data acquired by the detection system-Sunny Sensor Box-for Donghua University photovoltaic power generating system, the mathematical model of the PV array for engineering is optimized and the optimization includes linear and natural exponential optimization. Furthermore, higher accuracy of the optimized models is validated.
2D Unstructured Mesh Finite Volume Method for Simulating Structural Dynamics
Authors: Hai Miao Yu , Su Xiao Hui , Cao Yao , Zhao Yong , Zhang Jian Tao
Published: August 2013

A novel procedure for calculating the dynamic response of elastic solid structures is presented. The ultimate aim of this study is to develop a consistent set of finite volume (FV) methods on unstructured meshes for the analysis of dynamic fluidstructure interaction (FSI). This paper describes a two-dimensional (2D) FV cell-vertex based method for dynamic solid mechanics. A novel matrix-free implicit scheme was developed using the Newmark method and dual time step algorithm and the model is validated with a 2D cantilever test case as well as a 2D plate one.
Lifetime Prediction of Fire Extinguishing Pipeline by Means of Extreme Value Statistics
Authors: Jeong Jin A , Jin Chung Kuk
Published: August 2013

This study represents the lifetime prediction of fire extinguishing pipeline within the framework of corrosion. In this case, carbon steel was used as a material for fire extinguishing pipeline. Total 24 samples were selected, which was determined by specimens position, pipeline diameter, and pipeline thickness. Used test methods were view inspection and extreme value statistics using the Gumbel distribution. Especially, by utilizing extreme value statistics, the prediction of remaining life was confirmed as a specific numerical value. As a result of view inspection, pitting corrosion was occurred in several samples. In addition, extreme value statistics demonstrates that several pipelines were very sensitive at pitting corrosion. However, the pitting corrosion of all pipelines was not critical; thus, all pipelines dont need to be changed for a safety regulation.