bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimal Design of the Wireless Sensor Network on Environmental Monitoring
Authors: Cheng Zhi Guo , Pan Jun , Chen Su Xian
Published: December 2014

Wireless Sensor Network (WSN) is becoming increasingly important for environmental monitoring.However, there is seldom applications that address the data sharing standard and interoperability among different applications.In this paper, we present a gateway system for wireless sensor network based on environmental monitoring. Resource sharing and long-distance accessing are important issues for application of wireless sensor network and environmental monitoring.
Drag Coefficient Identification from Flight Data via Optimal Observer
Authors: Yang Rong Jun , Ye Yao
Published: December 2014

. For effectively using flight test data to extract drag coefficient, an optimal observer based on parameter estimation technique is proposed. The point mass dynamic equation is used to form the Unscented Kalman Filter (UKF) and the smoother (URTSS) for the estimation of a projectile’s flight states. The projectile flight states are then solved and utilized to extract the drag coefficient information using the observer techniques. The simulation verifies the feasibility of the method: with measurement noise, the accurate drag coefficient is obtained by using the smoother.
Machine Vision Detection on Circle with Non-Uniform Points
Authors: Liu Qing Min , Li Xue
Published: December 2014

s.The least-squares algorithm is usually used to fit data in circle detection. The application of the conventional least-squares algorithm is limited, its’ roundness error is bigger, and precision is lower. For detecting circle with data points of non-uniform distribution, developed an analysis algorithm for assessing the minimum zone roundness error. Center and radius can be accurately solved, without iteration, without truncation error. Visual measurements have been carried out for known diameter D=2.564mm tooth shape chain board’s aperture using the proposed methods, calculated results (Table 1) using four kinds of roundness error evaluation methods. Tooth shape chain board’s aperture diameter errors are 0.0157mm、0.0126mm、0.0117 mm and 0.0218mm, roundness errors are 0.0251 mm、0.0225mm、0.0228mm and 0.0244mm respectively. The minimum zone algorithm are suitable for distributed data of all kinds situation, particularly suitable for the realization of machine vision inspection system, fast speed for high precision, wide range of application.
The Design and Application of the Intelligent Vehicle Inspection System Based on RFID
Authors: Xiao Yun Hua
Published: December 2014

Our country has many serious problems such as fake-licensed vehicle, stolen vehicle, overloaded vehicle, over speed vehicle and so on at present. This paper designs and realizes a kind of intelligent vehicle inspection system based on RFID technology in order to solve these problems. This system obtain the all kinds of vehicle information by recognizing electronic label card and deal with all kinds of information in the background in order to manage vehicle. The system has changed the traditional manual vehicle management mode and realized automated inspection without parking. It can reduce the work intensity of law-enforcement personal and take the initiative to call the police when meet all kinds of illegal vehicle, stolen vehicle etc. It can eliminate the crime motive and behavior. It provides the great help for social and economic development.
Error Analysis and Improvement of Equal Precision Frequency Measurement
Authors: Wang Rong Xiang , Zhang Xia
Published: December 2014

In accordance with the principle of equal precision frequency measurement and theory of errors, in this paper, the problems are discussed that the equal precision frequency measurement eliminates the standard frequency count error. In order to reduce the relative error and improve the measurement accuracy, a method is proposed for phase coincide detection between standard frequency multiplication and measurement frequency demultiplication to open or shut the gate, at the same time, a signal selector is also used to improve circuit performance. This method can effectively solve the problem that the frequency can not be detected without the synchronization signal and improve the performance of the frequency measurement system.
Sliding-Mode Position Control of PMSLM Based on Grey Forecasting Model
Authors: Sun Hua , Dai Yue Hong , Tang Chuan Sheng
Published: December 2014

This paper presented a new method of sliding mode control for position control problem in view of the uncertainty of friction model of permanent magnet synchronous linear motor (PMSLM). This is an estimation compensation control scheme for non-homogeneous sequence data.The stability of the proposed control law was verified according to Lyapunov stable theory.Comparison with traditional control was given through Matlab simulations, which proved the feasibility and efficiency of the proposed control method for PMSLM drive system.
Excess Heat Power Measurement by Heat-Flow Calorimeter in a D/Pd Gas-Loading System
Authors: Shen Bing Jun , Wang Xing Ye , Zhang Wu Shou , Jin Li Hong , Zhao Xin Le , Zhou Dan , Lu Xin , Li Ling Yu , Tian Jian
Published: December 2014

In order to confirm the reliability and accuracy of the excess heat triggered by current in the previous work [1-3], a new designed and built heat-flow calorimeter [4] was introduced in the same D/Pd gas-loading system as mentioned previously. The calorimeter was calibrated in nitrogen atmosphere and the results between the input power (P) and the exothermal electromotive force (V) could be simulated by a quadratic equation: P = (15.356 ± 0.068) V – (0.014 ± 0.039) V2. The maximum excess power (6.398 ± 0.191 W) were found at the condition of an optimum current (8.47 A) and a deuterium pressure (3 × 104 Pa). The reproducibility was 3/3 and the total excess energy released in these experiments was about 0.70 ± 0.02 MJ within 40 hours, which means (1.6 ± 0.1) ×103 eV for each palladium atom. The excess heat power and excess heat energy were far more than that in a chemical reaction.
Ultrasonic Testing Numerical Simulation of Austenitic Stainless Steel Pipeline Welding Cladding
Authors: Wei Fu Xiang , Yu Gen Xi , Wang Zhi Ling
Published: December 2014

In the paper, ultrasonic testing of austenitic stainless steel pipeline welding cladding is stimulated based on ultrasonic testing software CIVA. The result shows that the frequency is higher; the sensitivity on small defect testing is higher. When cylindrical defect with length of 6mm and diameter of 2mm is detected, the frequency is higher, the tested length-section result is more accurate, and the width-section (i.e., diameter) is not affected. The optimum frequency scope for testing the defect should be between 5MHz and 10MHz.
Desing of Real-Time Temperature Measurement System Based on Semiconductor Laser Diode
Authors: Yang Zhong Shu
Published: December 2014

Thermoelectric couple was employed in traditional airplane engine temperature measurement system with the disadvantages of large size,heavy weight,big error and slow response.This paper presents a new kind of real—time temperature measurement system using laser diode InGaAs/I as light source,and using pyroelectric detector LiTa03 as optical receiving unit and using a microprocessor as signal processing center.This instrument consists of three parts:optical emitting and receiving system,signal amplifying and controlling system,and display system。The principle and structure of the system are introduced.Experimental results of airplane engine real—time temperature measurement show that temperature measurement accuracy and response time conform to our requirement in the range of 300°C一800°Cand agree with prediction of theory.All these prove that the design is correct.
Microwave Measuring Instrument Application in the Radar Equipment Maintenance Support
Authors: Zhang Yong Zhen , Wang Yi , Zhang Xue Zhi , Hou Fei
Published: December 2014

With the development of science and technology ,microwave measuring instrument become more important in the radar equipment maintenance support task.This paper expounds the principles of microwave measuring instrument work and test, describes the application of microwave measuring instrument in the maintenance detection of radar antenna feed system、radar antenna pattern test、power amplifier parameters measurement、the local oscillator test and receiving systems component test. Scientific applications of microwave measuring instrument is the important guarantee to ensure the radar equipment operate effectively.
Leakage Detection in Pipelines Based on Bragg Fiber Technique
Authors: Chen Zhi Gang , Zhong Xin Rong , Lian Xiang Jiao , Niu Ju Fen
Published: December 2014

In order to further improve monitoring safety of oil and gas pipelines, a leakage detection technology for natural gas pipelines with distributed Fiber Bragg Grating (FBG) is put forward. Optical fiber, set up along pipelines acting as FBG sensors, is used to acquire pressure and vibration signals created by some events such as leakage, mechanical disturbance. Through grating matching and automatic distinguish technique leakage can be detected and located. Moreover, independent component analysis (ICA) technique is studied and used to separate useful signal from noise. Theory analysis and experiments showed this method has good capacity to detect and locate leakage effectively in pipelines.
Dynamic Analysis of Face-Gear Drive with and without Pinion Tip Relief
Authors: Sheng Zhao Hua , Tang Jin Yuan , Chen Si Yu , Hu Ze Hua
Published: December 2014

A nonlinear dynamic contrastive analysis of face-gear drive with and without pinion tip relief is studied. Firstly, a 2-DOF lumped parameter dynamic model of face-gear drive, considering contact characteristics, backlash, time-varying mesh stiffness, is developed and the dynamic equations are deduced. Secondly, the mesh characteristics along the line of action are obtained by applying tooth contact analysis, and the time-varying mesh stiffness is calculated by using the FEA method. Finally, the dynamic equations are solved by using Runge-Kutta numerical integral method. By comparison of three cases of pinion tip relief on dynamic response, it is found that under the condition of pinion tip relief, the vibration amplitude is reduced.
Monitoring the Travel Characteristics of High Voltage Circuit Breaker Based on TLD
Authors: Li Bao Shu , Chen Shang , Zhao Xian Ping , Niu Wei Hua
Published: December 2014

For the circuit breaker, mechanical fault make up the largest share of the fault. In order to ensure reliable and secure power system can run,it is necessary to monitor the mechanical properties of the circuit breaker,which includes monitoring the breaker trip.By TLD video tracking technology ZN65-12 vacuum circuit breaker mechanical properties were measured,obtain a two-dimensional direction of travel, speed characteristic curves.The experimental results show that the error of the method used to obtain a circuit breaker stroke, speed and other parameters of not more than 1mm,compared with traditional methods of measurement can get richer information.
Measurement of Cr(VI) Based on Absorption Spectrum through Plastic Fiber
Authors: Hu Wei Jun
Published: December 2014

Considering the advantage of optic fiber, a methods of measuring Cr (VI) based on absorption spectrum through plastic fiber is introduced, which includes structure of measurement, experiment process, spectrum signal process. After signal processing based on low-pass filtering and non-linear fitting, five concentrations of Cr (VI) can be differed easily and the peak values of spectrum corresponding to five concentrations accord with the Longbow Bill's law . In this way, the measurement concentration can limit down to 0. 0.0660 μg/ml.
The Method Based on BP Neural Network of Pile Foundation Defect Detection
Authors: Zhang Le Ting , Wu Ya Ping , Wei Ming Qiang
Published: December 2014

This paper through indoor model test get the axial speed curve and waveform data when the pile top under transient excitation force. Use the method of reverberation ray matrix program to verify the correctness of the velocity curve. The data input to the BP neural network and identification data. It showed that the BP neural network can judge the defect type of pile foundation accurately.
Pedestrian Detection Based on Multi-Stage Unsupervised Learning
Authors: Yin Yuan , Liao Min Jiang , Li Xiao Lin
Published: December 2014

In order to implement effective detection and utilize large numbers of unlabeled samples,a pedestrian detection method based on Unsupervised learning was presented.We apply deep learning to human detection to acquire pedestrian features with unlabeled data set.The detection method uses unsupervised convolution sparse auto-encoders to train features at all levels from the data set,then trains classifier with end-to-end supervised method.Additionally,we fine-tune the features in a supervised way.Experiments show that the method approach an state-of-art result on all data set.
Improving the Sustainability and Effectiveness of the Inventory Management in Manufacturing Company
Authors: Prachař Jan , Fidlerová Helena , Sakál Peter , Zbojová Tatiana
Published: December 2014

The aim of the project was to optimize the company's inventory management and to suggest measures to minimize inventory and costs and maximize production in an effective and sustainable way. The effectiveness and sustainability of the logistics processes was focused on streamlining of inventory management through the actualization and improvement of existing system Kanban. In the context of sustainable development we propose the Kanban method because its principles are to eliminate waste and to ensure employees satisfied. In the centre of attention is the employee and the company should care for its satisfaction by means of enhancement of workplaces. The objective of this paper is to present characteristics of the Kanban method in theory and practice; it addresses actualization and improvement of the Kanban system and recommendations for future sustainable Kanban system. The work is a part of KEGA project No. 037STU-4/2012 -Implementation of the subject “Sustainable Corporate SocialEntrepreneurship” into the study program Industrial management in the second degree at the MTF STU Trnava.and submitted project VEGA No.č.1/0510/15Sustainable strategic management vs. sustainable corporate social responsibility vs. integrated managementsystem of strategic business units.
Reflections on the Opportunities of Multicriteria Optimization within Simulation Studies
Authors: Jerz Vladimír
Published: December 2014

This article discusses the possibilities of linking simulation and optimization methods, processes and tools to solve complex tasks of optimal design and process control in production and logistics systems. A theoretical model of simulation-based optimization is formulated. Its use in resolving practical problems as well as methods for the integration of algorithms for multi-criteria optimization into the simulation model are outlined.
The Impact Analysis of a Tire Model Properties on Running Stability of a Vehicle in the Environment of ADAMS/Car
Authors: Sapietova Alzbeta , Lukac Michal
Published: December 2014

The paper describes an analysis of suitability of a tire model and its model properties with respect to values of the car body acceleration, or running stability of the vehicle. In the frame of the solution simulations were run on a modified example model of a vehicle from the library of ADAMS/Car. The monitored dynamic parameters were a function of the used tires and chosen driving maneuvers. Evaluation of the simulations was done independently for inflated tires and for underinflated tires. The overview of the evaluated results of the simulations is presented in a table, while the weight parameter reflects the accuracy of calculated values.
Precision Analysis of Part Manufacturing Using SLM Method
Authors: Mendřický Radomír , Keller Petr
Published: December 2014

The technology of part manufacturing by means of 3D printing is currently the essential tool in fast production of prototypes and significantly participates in shortening the development an innovation time of the product. In manufacturing by means of a 3D printer as well as in any other manufacturing technology, the precision of the end product is affected by a variety of factors and effects that shall be familiarised with in order to provide high dimensional and shape precision.The research specified in this post is focused on dimensional and shape precision analysis of part manufacturing using the Selective Laser Melting method (SLM). This technology manufactures a prototype by selectively melting metallic powder layer by layer by means of a laser. A CAD model of a specific shape was designed for the purpose of the analysis. An orientation of this part was designed by means of SLM 280HL workspace with regard to minimisation of the internal stress. The part itself was made of AlSi12 material and printed on this machine. The part was afterwards digitised by means of Atos II 3D optical scanner. The data obtained by digitising were compared to the nominal CAD model. The comparison was a basis for the evaluation of the resulting dimensional and shape precision of a prototype manufactured by means of this technology.
3D Printing of Fractal Deterministic Shapes into Polymer Matrix with Respect to Final Composite Mechanical Properties
Authors: Bobek Jiří , Šafka Jiří , Habr Jiří , Seidl Martin
Published: December 2014

This paper deals with mechanical properties research of innovative polymer multiphase composite materials consisting of matrix and isotropic or anisotropic oriented deterministic fractal shapes made by 3D printing. Standard polymer composite materials consisting for example of polypropylene matrix and glass fibres have mechanical properties which depend mainly on matrix-fibre interface strength, fibre length, fibre strength and fibres orientation. [1] In case of under critical fibre length is fibres orientation stochastic in for example injection moulded composites. So is possible to say that mechanical properties of these (standard) composites with short fibres are isotropic and thus all direction limited. However by creating of reinforcing internal structure consisting of deterministic fractal connected shapes is possible to gain unlimited mechanical properties directing. These fractal shapes – placed in multiphase system matrix – are significantly influencing whole material system mechanical properties mainly in case of stress on the limit of strength, proportional elongation on the limit of strength or tensile/ flexural modulus. Fractal shapes are also possible to properly locate, orient or shape modify according to potential material using with goal to gain maximal efficiency of fractal shapes occurrence. Producing of this multiphase system is realized by the help of two component 3D printing technology. So is possible to create any fractal shapes placed in polymer matrix which are by another technology unmanufacturable. Mechanical properties analyse is performed with respect to fractal shape type, fractal dimension, fractal shape orientation and shear and tensile strength of matrix.
Remanufacturing of Damaged Parts Using Selective Laser Melting Technology
Authors: Buican George Răzvan , Oancea Gheorghe , Manolescu Alexandru
Published: December 2014

This paper presents the stages taken to remanufacture a damaged part, for which no documentation is available, using the SLM additive technologies. A damaged part is scanned using the COMET L3D scanner and the points cloud is used to redesign and reconstruct the part as a 3D CAD model. Using the generated 3D CAD model the build job for the SLM is created by designing and adding the construction supports, the material type and the type of hatching strategy for each slice. The slices are used by the SLM250HL equipment and the new metallic part is manufactured. The manufactured part was scanned with the same 3D scanner and the data from the original part was compared with the new reading. The results can be used to reconstruct more complex parts, to redesign the broken parts and to improve the manufacturing process.
Priority Index of Production Equipment: A DEA-Based Multi-Criteria Approach to Setting Investment Priorities for Industrial Production Processes
Authors: Ledón René Abreu , Delgado Sobrino Daynier Rolando
Published: December 2014

The aim of this paper is to propose and demonstrate the use of an index for ranking investment in production equipment within manufacturing companies. The construction of the index takes into account multiple criteria and relies on a data envelopment analytical model; some of those criteria are the environmental impacts and product quality. An application to a major Cuban heat interchange battery company is included in the paper in order to better illustrate the use of the proposed tool.
The Dependence of the Friction Coefficient on the Size and Course of Sliding Speed
Authors: Labašová Eva
Published: December 2014

The coefficient of friction for the bronze material (CuZn25Al6) with insert graphite beds and other bronze material (CuSn12) are investigated in this paper. Friction coefficient was investigated experimentally by the testing machine Tribotestor`89 which uses the principle of the ring on ring method. The external fixed bushing was exposed to the normal load of the same size in all tests. Process of load was increased from level 50 N to 600 N during run up 300 s, after the run up the appropriate level of load was held. The internal bushing performed a rotational movement with constant sliding speed. The value of sliding speed was changed individually for every sample (v = 0.2 (0.3, 0.4) m.s-1). The forth test had a rectangular shape of sliding speed with direct current component 0.3 m.s-1 and the amplitude 0.1 m.s-1 period 300 s, the whole test took 2100 s. The obtained results reveal that friction coefficient increase with the increase of sliding speed.
Vibration Analysis of Reinforced Beam Structure Using Partially Inserted Longitudinal Core
Authors: Nad Milan , Rolník Ladislav , Steinhauser Jozef
Published: December 2014

The beam structures are considered as one of the most fundamental building elements of technical equipment. Many of the machining tools (for example lathe tool) may be also regarded as the beam structures. The various excitation effects are affecting the machining tools during the machining process. Cutting speeds, cutting forces, chip-making manner, the stiffness of MTW (machine-tool-workpiece) system are predominant effects affecting the dynamics of MTW system and also influencing the machining process (roughness of the machined surface, tool wear, tool or workpiece damage, noise generated by the machining process, etc.). Depending on the excitation effects, the machining tool body (beam structure) must have the required dynamic properties. The modification of beam modal properties based on embedding of inner reinforcing core is presented in this paper. The main aim of the modification is to change the modal properties (mode shapes, natural frequencies) of the beam body.
The Loss of Plasticity Stability
Authors: Spišák Emil , Majerníková Janka
Published: December 2014

The real values of plastic properties of steel sheets are basic input parameters for objectification of deep drawing technological processes. The loss of stability of plastic properties is the criterion of evaluation of plastic properties of steel sheets in most cases. The loss of stability of plastic properties depends on stress-strain scheme in real conditions of deep drawing of sheets. In the contribution will be evaluated the loss of plastic properties stability of thin double reduced packaging sheets made from low carbon steels. For evaluation of strength and plastic properties of thin packaging sheets is the tensile test most used at present. The material is stressed by uniaxial tension during this test. In the conditions of technological processes of drawing, which thin packaging sheets are mostly treating, is this way of stress not very objective. In most cases it deals about multiaxial stress of sheet by deformation of sheet to require draw cup. At the present, the biggest problem of thin steel sheets by uniaxial tension test evaluation is the loss of plastic deformation stability (localization of plastic deformation). Therefore, obtained results of plastic deformation during this test do not correspond with real plastic properties of thin steel sheets. In the contribution, will be compared the evaluation of plastic properties of these sheets by uniaxial and biaxial load. Biaxial load is unfavourable from stress point, but less sensitive on loss stability of plastic deformation from conditions test influence point.
Effect of Cutting Speed and Feed on Deep Drilling
Authors: Letavay Martin , Pilc Jozef , Stancekova Dana
Published: December 2014

The article describes the deep drilling tests of internal company research, which is aimed to determine the geometric tolerances as run-out, roundness and roughness, but also the shape and size of chips depending on cutting parameters. Further exploration subject was recorded using the actual engine power to determine the torque and axial force required for removing particles at the given cutting parameters. The results served to increase the productivity of deep drilling operations within the optimization process.
Investigation of the Topography of Machined Surfaces
Authors: Felhő Csaba , Kundrák János
Published: December 2014

The modern investigation of the topography of cut surfaces is nowadays usually performed by three-dimensional surface roughness indexes. The goal of this work was to determine a theoretical roughness index for face milled surfaces. The calculated values were compared with real surface roughness data obtained by performing cutting experiments and the relation was determined between these two datasets.
The Characteristic Parameters of the Twist Structure on Cylindrical Surfaces Machined by Turning Procedures
Authors: Sztankovics István , Kundrák János
Published: December 2014

The main goals of the improvements of manufacturing procedures are the increase of the material removal rate, the enhancement of the accuracy of the parts and the improvement of the surface quality. The specifications of the surface quality contain the requirements which ensure the proper functional conditions as well. An example among these is the twist-free surface on some special rotating shafts. In this paper we investigate the generated twist on surfaces machined by longitudinal and rotational turning and analyse the effects of the geometric parameters of rotational turning.
Rule Making Algorithms for Smart Home Control
Authors: Strasiftak Andrej , Mudrončík Dušan , Peterková Andrea
Published: December 2014

In this article we want to introduce our first tested concept of a learning mechanism for smart homes. It is a number of interrelated algorithms that search the database of events in the home automation system. By searching, mechanism selects those events that at the time repeated several times under well-defined rules. Finally creates a database of basic rules, some basic knowledge database of activities. These can then serve as the management rules or may be further examined for activity recognition.
The Methodology for the Selection of the Appropriate Sensory Equipment for the Grasping End Effectors in the Assembly Workspace
Authors: Šimúnová Michala , Vetríková Nina , Velíšek Karol
Published: December 2014

Nowadays, there is a huge emphasis on the development of devices, technologies and process in the industry. Automation helps with it in the considerable degree, because it tries to solve the development of technique, what is characteristic sign of production, assembly, control and another process realization, what eliminates the human intervention and error rates. Automated assembly process consists of the assembly and handling operations of component connecting to the different units and final products, what is equipped with appropriate devices to eliminate the human intervention. One of the most productive solutions seems to be the deployment and the use of robots and manipulators, which realize the technological, handling and also transporting process. This contribution deals with the systematic steps for the selection of the appropriate sensory equipment used in the gripping robotic end effectors, which are characteristic for the assembly system, placed in our department laboratories.
Influence of Random Components of the Sampling Period on the Combined Dynamic System
Authors: Michalconok German , Nemeth Martin , Stremy Maximilian
Published: December 2014

The combined dynamic control system is executing control algorithm based on time and control algorithm based on the data change in one sampling period. Processing time of control algorithm is based on the data change that has a random character. Previous shows that the deviation between the sampling period of the entire system and desired sampling period has also random character. The aim of this article is to find boundaries, in which the sampling period can be changed and by which the control algorithm of time-based technological processes remains in the required quality.
SE: A Simple and Efficient Strategy for Clustering and Routing in WSN
Authors: Liang Yu Zhu , Wang Meng Jiao , Li Yong Zhen
Published: December 2014

Clustering the sensor nodes and choosing the way for routing the data are two key elements that would affect the performance of a wireless sensor network (WSN). In this paper, a novel clustering method is proposed and a simple two-hop routing model is adopted for optimizing the network layer of the WSN. New protocol is characterized by simplicity and efficiency (SE). During the clustering stage, no information needs to be shared among the nodes and the position information is not required. Through adjustment of two parameters in SE, the network on any scale (varies from the area and the number of nodes) could obtain decent performance. This work also puts forward a new standard for the evaluation of the network performance—the uniformity of the nodes' death—which is a complement to merely taking the system lifetime into consideration. The combination of these two aspects provides a more comprehensive guideline for designing the clustering or routing protocols in WSN.
Simulation of Information Transmission System for Seafloor Observation Platform
Authors: Wang Xi Chen , Zhou Xue Jun , Li Ming Jie
Published: December 2014

This paper presents a scheme of information transmission system for undersea observation platform based on all-optical network. Through flexible using of WDM, OADM, EDFA, RFA, DCF and other technology, it effectively compensates chromatic dispersion, restrains nonlinear effects and noise problems. Fibers in primary nodes are directly assigned to ensure mutual independence between different transmission links. Dual-fiber bidirectional transmission mode that wavelength of one fiber drops to the node by OADM, then return to the same transmission station in the other fiber, increases the reliability of the transmission system. The simulation results show that this scheme can ensure information transmission quality and effectively achieve wavelength adding and dropping, further verify the feasibility of the scheme.
Study about Coherent Transmitting Technology Based on Fixed Sample Rate in Universal Satellite Simulator
Authors: Xie Yong , Liang Sheng , Pan Gao Feng , Xie Jun
Published: December 2014

Because of different working frequencies, the coherent transmitting mode and other factors, the IF signals form satellite simulator are difficult to fix on the same frequency, which affects the generality of satellite simulator. This paper uses the Doppler extraction technology and software radio technology to study the coherent transmitting of carrier signal. It makes the IF acquisition stick to 70MHz and ensures the uplink & downlink carrier signals coherent. At last the generality problem is solved.
Comparison and Analysis of DCO-OFDM, ACO-OFDM and ADO-OFDM in IM/DD Systems
Authors: Zhang Xu , Zhou Yu Fang , Yu Yin Peng , Han Peng Chao , Wang Xiao Rui
Published: December 2014

As a promising modulation technology for optical communication, Orthogonal Frequency Division Multiplexing (OFDM) is now increasingly used and a lot of ways of improving the optical efficiency of Intensity Modulated/ Direct Detection (IM/DD) systems have been proposed. And real and non-negative OFDM signals are required in this kind of system. Asymmetrically clipped DC biased Optical OFDM (DCO-OFDM), Asymmetrically Clipped Optical OFDM (ACO-OFDM) and Asymmetrically clipped DC biased Optical OFDM (ADO-OFDM) can satisfy this requirement. In this paper, we analysis the properties and performance orderly of the above three systems and simultaneously compare their performance. The simulation results show that DCO-OFDM is efficient in terms of bandwidth while the ACO-OFDM is efficient in terms of optical power. More importantly, ADO-OFDM is both power-efficient and bandwidth-efficient. At the same time, a developmentally proposal for the future OFDM in IM/DD systems is put forward.
Optimization and Simulation of Demodulation and Decoding of the LDPC-BICM-ID System
Authors: Mu Shi Guang , Bai Jin Rong , Shi Xiu Feng
Published: December 2014

In the bit interleaving coded modulation (BICM-ID) solution,includes the demodulator and decoder into the iteration and decoding process, and the decoding is completed between demodulator and decoder. In studies, it have been found that the oscillation is generated on logarithmic likelihood ratio (LLR) because the soft information generated by all previous BP iterations is ignored in this solution, so that the BP soft information output by the final BP iterative decoding is not always reliable. In this paper, the above problem is solved by optimizing the iterative demodulation and decoding solution. Aiming at this problem, this paper firstly puts forward a kind of optimization scheme about iterative demodulation and decoding, then the simulation analysis, the result show that, under the premise of ensuring the system complexity basically unchanged, can improve the demodulation and decoding performance of LDPC coded modulation and demodulation system.
MCU Experimental Teaching System Based on Proteus
Authors: Xu Wen Na , Wang Chun
Published: December 2014

This paper put forward a viable scheme and demonstrate the feasibility of MCU experiment teaching system with PROTEUS according to analyze the present situation and the problems of MCU teaching experiment in colleges and universities. The simulation system was designed according to a case of testing system of welding temperature. The experiment results show that the experiment system can enrich the experiment teaching method, increase the interests of the students in learning, reduce the cost of experiment and improve the quality and efficiency of education.
A Fractional-Order Hyperchaotic System and its Circuit Implement
Authors: Wang Qi Li
Published: December 2014

A fractional-order hyperchaotic system was proposed and some basic dynamical properties were investigated to show chaotic behavior. These properties include instability of equilibria, sensitivity to initial conditions, strange attractor, Lyapunov exponents, and bifurcation. The fractional-order system presents hyperchaos, chaos, and periodic behavior when the parameters vary continuously. Then, an analog circuit is designed onMultisim 11and the Multisim results are agreed with the simulation results.
Research and Application of Transmission Line Differentiated Operation and Maintenance Scheduling Optimization Model
Authors: Wen Jian Zhong , Wu Chui Ming , Xu Ping , Lei Yi Yong , Li Wen Hui , Wen Zhi Qiang
Published: December 2014

Aimed at resources shortage and extensive management of transmission line operation and maintenance, this paper proposes a differentiated operation and maintenance (DOM) method. This approach divides DOM strategy into basis strategy and criteria problem based strategy. An multi-objective DOM scheduling optimized model is presented, which contains three objective function including economy, safety and reliability. Based on the current electric power enterprise management requirements, personal safety factor is incorporated into safety objective function. Multi-objective Artificial Physics Optimization algorithm (MOAPO) based on feasible rules of law is used to solve the problem with an excellent diversity and high efficiency. The model is used to optimize yearly differentiated operation and maintenance scheduling in a certain area’s transmission system, the result verifies the feasibility of the model and method.
The Using of the Minimization of K-L Information in a Hypothesis Testing
Authors: Zhang Kai Guang , Ba Ming Ting , Meng Hong Ling
Published: December 2014

The article used Minimization of K-L Information in the Hypothesis Testing,the convergent problems for the error probabilities of likelihood ratio were deeply discussed. The results show that for the error probabilities of likelihood ratio is power series convergent under the Minimization of K-L Information.
Research on Multi-Purpose Alarm System for Dormitory Based on AVR
Authors: Gu Shi Xue
Published: December 2014

In this paper, a multi-purpose alarm system for dormitory based on control conducted by AVR single-chip microcomputer is designed and produced, which aims at potential safety risks existing in dormitories of colleges and universities at present. This system uses multiple sensors to realize detection of human body, smoke, access of people and valuables, after which signal will be processed and AVR single-chip microcomputer will then be used to realize automatic control. Host computer receives information from slave computer and then realize long-distance and real-time monitoring. Test result indicates that this system functions well and can realize security of student dormitories if applied, which can raise audible and visual alarm in case of abnormal situation and realize cancel of alarm through entering password on a keyboard.
Effectivity of Total Productive Maintenance (TPM) in Large Size Organizations – A Case Study in Shandong Lingong
Authors: Lin Xiang Jie , Lin Qiang , Zhang Guang Na
Published: December 2014

Poor information of TPM case study can be found, which is important for TPM implementation. This paper introduced TPM implementation in Shandong Lingong (SDLG) with two years of data collection and practice. The company conducted equipment classification, production plan improvement, failure rate reduction, spare parts management and staff training practices based on MTTR, MTBF and OEE figures. Results showed that MTTR is complicate while MTBF and OEE showed better fits with the company reality of TPM. Thorough the practice and execution of TPM the company get better OEE and less breakdown time, which increase the production efficiency in the end.
Study Frame on Coordinative Decision of Pricing and Scheduling
Authors: Yu Hai Jie , Liu Ying
Published: December 2014

Pricing decisions of product is determining sell price, then affect market demand and income, production decisions are to balance capability and schedule under cost optimization. Product pricing before production decision will cause that product demand by setting price and output determinated by production departments under cost minimization objective do not match, then their overall profit is suboptimal, and production fluctuation is easy. Collaborative decision of pricing and production planning is a key issue of corporate profit and the supply-demand.
Research on Energy Management Platform Based on Marketing and Distribution Integrated System
Authors: Wang Ai Min , Liu Chang Shun , Ma Xiao
Published: December 2014

Marketing and Distribution Integrated System is the use of modern information technology, on the basis of a unified enterprise network equipment and customer information model, basic information and topological relationship, used in customer-facing supply reliability management, customer outage management, line loss of four sub-management, business expanding auxiliary field and distribution network construction planning decisions such as the standardization of GIS-based, integrated enterprise-wide information platform. This paper describes a GIS-based business integration system with the main content and functionality, energy efficiency management system to achieve a variety of integrated business systems and energy efficiency management decision-making system that can effectively address the development of enterprise information supply information silos that exist , huge amounts of data and processes curing problems with the integration of power supply enterprise business planning and construction of information systems provide a useful reference.
Standardized Operation System of E-Commerce Supply Chain of Agricultural Products Based on SCOR
Authors: Tan Yong , Shi Xi Ai
Published: December 2014

Through analyzing E-commerce supply chain of agricultural products and the SCOR, it constructed its standardized operation system based on the SCOR, then analyze this system, and decompose the basic process layer, the configuration layer and process elements layer. Finally, by constructing the observed variables for every element of the logistics capability, it measures its performance based on the SCOR at an angle of logistics capability , and thus be able to put forward the advice to assess operations system of supply chain.
Study on the Network Reverse Logistics under E-Commerce
Authors: Su Li Qin , Hao Hong Yao , Hu Lin Feng
Published: December 2014

E-commerce is hasting the birth of “network reverse logistics”, and the service advantages of network reverse logistics have become increasingly prominent. The paper points out that the reverse logistics under E-commerce is increasingly important. Than it analyzes many factors of enhancing the reverse logistics under E-commerce, such as the restraint of laws and regulations, asymmetric information, subjective factors of consumers, businessmen return promise, etc. The paper further analyzes the problems of reverse logistics services in China, and puts forward the improvement strategies of network reverse logistics service: ①starting from the website design to prevent reverse logistics,including the site as much as possible to provide detailed goods information to overcome the information asymmetry defects, etc; ②smoothly realize return Online by hiring third party returns management center, etc.
A Robust Clipping Algorithm for Overlap Surface Patches
Authors: Li Tao , Chen Wen Liang
Published: December 2014

By revising geometry and topology information of boundaries, a robust clipping method is proposed for overlapped surface patches. All the boundary vertices of one patch are marked on the basis of their relationship with the boundary loops of the other patch. Then the overlap regions are recognized according to the vertices flags. If the overlap regions are slim and only one boundary curve in each patch is intersected, the corresponding parts of the curves are subdivided and their vertices are repositioned, and the interfered curves are sewed together. Otherwise, the boundaries are reorganized according to vertex flags. There are two candidate clipping schemes for each overlapped patches and the one with fewer boundary curves is the final result. Examples verify robustness of the algorithms.
Research of the Status of Electrical Energy in Energy Consumption in China
Authors: Wang Yong Li , Shi Dan , Fan Li Shan , Han Ji Qiong
Published: December 2014

Nowadays, energy consumption has been to be one of the biggest problems in China. It is very important to increase proportion of electric power among the end-use energy market for optimization of end-use energy consumption structure. Research on the status of electrical energy in energy consumption for China is a critical method to improve its development. In this paper, it analyses the electrical energy status in the industry energy consumption from 1995 to 2010. Secondly, status of electrical energy in the final energy consumption has been researched deeply. Finally, it analyses the role of electrical energy in energy consumption according to the curve of data from 1995 to 2010, gives some suggestions for optimization of the energy consumption structure so that save energy.
Analysis of Current Correlation of the Capital Airport and the Airport Economic Zone
Authors: Ji Shou Wen , Liu Di , Su Zeng Rong
Published: December 2014

This article correlation analysis the changes in the capital airport passenger and freight volume and the changes in the industry of Shunyi Airport Economic Zone，mainly includes generating induced ,attract gathered, promote the upgrading and promote the optimization of four stages,and will be at the airport and the airport economic zone chain and evolution mechanism of the linkage development are expounded.
Design of Counsellors’ Journal Management System in CRP Digital Campus Information Platform
Authors: Huang Bin Wen , Jiao Yuan
Published: December 2014

Counsellors’ journal is an important record for everyday’s counsellors’ work situation, it plays an important role in the daily students management work, design of counsellors’ journal management system in CRP digital campus information platform (CRP) is divided into three parts: electronic form content design, the management function design and interconnection & interworking work flow design between counsellors' journal management system and other systems. Students work data collected by the counsellors' journal management system has important guiding significance to the students monitoring and management, student management work could be promoted from the analysis and use of collected data of counsellors’ journal.
Study on the Traffic Capacity of Expressway Based on Cellular Automata Model
Authors: Xia Xiao Dong , Xu Lin Ling
Published: December 2014

Based on the Nagel-Schrekenberg cellular automaton model of traffic flow, this article analyzed the influence that driving on the right side takes to the traffic flow in the condition of light and heavy traffic. With the combination of fluid dynamics and vehicle dynamics, we established the Cellular Automata model for mixed speed two-lane traffic flow on the rule driving on the right side. Then we used the AHP method to find out the large bus share rate, the number of vehicles changing lanes and the influence law of safety factors on traffic flow. We came to a conclusion that the relationship between traffic flow and load are inverted U shape changes in the low load and high load conditions, the accident rate is the maximum when the V/C (the ratio of traffic flow and the ability of corresponding section) is the minimum; with the increase of V/C, the accident rate decreased gradually.
Research on Information Model of Cigarette Manufacturing Process Based on IDEF
Authors: Zhang Zhi Hua , Lu Hai Liang , Gao Yang Hua
Published: December 2014

In this paper we firstly investigate the main process of Cigarette Manufacturing in China Tobacco Zhejiang Industrial CO. LTD, and we decomposed the cigarette production in three parts through the investigation. Secondly, we developing the Information Model for each part by IDEF1x. Thirdly we acquire the Information Model of Cigarette Manufacturing Process by integrating three Information Model of sub process.
Scan Tree Design for 3-D ICs with Constraint of Leaf Nodes Number
Authors: Hu Jing Yun , Yi Mao Xiang , Liu Jun
Published: December 2014

To reduce the test time and test cost of 3-D ICs, this paper proposed a design method of building three-dimensional scan tree, which can optimize the number of through silicon via (TSV) when limit the leaf nodes number. The proposed technique partitioned compatible groups in every layer based on test vectors, and listed requirements for building three-dimensional scan tree, which should be translated to integral linear programming model. Integer linear programming tool sort compatible groups order to build three-dimensional scan tree with minimum number of TSV. Experimental results indicate the proposed method can effectively reduce the number of TSV compared to the existing method under the condition of the same leaf nodes number.