bluuebunny/crossref_metadata_2025 huggingface dataset:
Decision Making in a Fuzzy Environment and its Management to the Diminishing Manufacturing Sources and Material Shortage Problems
Authors: Tsai Yuan Cheng , Chi Yi Lun
Published: February 2014

The paper formulated a proposed methodology to manage diminishing manufacturing sources and material shortage (DMS) with conclusions and recommendations on the subject of component obsolescence management in a military electronic support environment. By assessing applicable literature as well as feedback and lessons learned from relevant support projects, a strategy for the management of component obsolescence is proposed. The aim of the research is to explore the problem of managing DMS strategies by the method of project management and describes the risk of running distinct strategies to solve problems of DMS by fuzzy theory and possibility theory. Based on the results, this paper can be applied to support businesses quickly to determine the Strategies Combination, Resource Allocation and Inventory by using the model and genetic algorithm. A case study of an aerospace industry is used to illustrate the concept developed, which would be meaningful to reduce applicable obsolescence risks and thereby reducing related inventory and manpower costs.
Design and Realization of Anti-Broadband Electromagnetic Interference Wired Phone
Authors: Lin Shao Feng , Shen Jian Zhong , Zhou Yao , Ye Ya Lin
Published: February 2014

First analyzing electromagnetic compatibility system of the wired circuit, and then electromagnetic shielding, PCB board electromagnetic compatibility and filtering are used to develop an anti-broadband electromagnetic interference wired phone. It can resolve practical problems of SLT dialing error in strong electromagnetic interference, voice unclear and intermittent communication. After 30 days test, experiment shows that in 50m radiating field of high-power VHF radar or shortwave radio, speech intelligibility of phone designed was higher than that of general phone and had no whistling or ringing.
The Analysis on the Network Security Situation Assessment and Situational Awareness
Authors: Abasi
Published: February 2014

With the development of information era, network security is gradually becoming an outstanding issue of Internet field, and they have an increasingly important impact on peoples lives. The event of military leaks due to the break of network security has line up trend annually. How to deal with the issues like this and hold the dynamic progress of network security threat in a right way so that we can cope with the threat that may have happened is becoming a problem that we faced. The paper analyzes the research approaches of recent network security according to the introduction of network security situation and assessment elements.
Discussion on Application of the Garment Industry Logistics Informatization
Authors: Zhang Run Xing , Yang Wei Xia
Published: February 2014

China is the largest garment consumption. The garment industry has become an important part of our national economy, and it is closely related with people's life, consumption, production.It is an important reflection of development in economic and social. But with the deepening of economic globalization, production and supply of garment enterprises began to compete in the same industry chain, the information collection, exchange, reaction of the supply chain has become a key factor to improve the competitiveness of enterprise. Whose information of supply chain timely, accurately, effectively transfer between node enterprises will be able to win in the competition. In the paper, the author analyze problems about our country enterprise construction and the characteristics of logistics informationization, combing with Chinese garment industry reality environment and the special situation of garment industry. Finally the author puts forward a series of garment industry informatization strategy, to break the bottleneck and improve the rapid response to market demand.
Sustainable City Growth New Models for the Post-Industrial City
Authors: Cao Jun , Lin Ye
Published: February 2014

This paper reports on research in the area of Green Urbanism and new models for urban growth and neighborhoods, as cities need to transform from a fossil-based model to a model based on sustainable energy sources. The paper deals with cross-cutting issues in architecture, landscape architecture and urban design and addresses the question of how we can best cohesively integrate all aspects of energy systems, transport systems, waste and water management, passive and active strategies, natural ventilation and so on, into contemporary urban design of Eco-Cities with an improved environmental performance of cities. This text reflects upon practical strategies focused on increasing sustainability beyond and within the scope of individual buildings and provides a context for a general discourse about the regeneration of the city centre, its transformation to a sustainable model, and discusses how urbanism is affected (and can be expected to be even more affected in future) by the paradigms of ecology.
Recent examples for the application of such urban design principles are the two proposals for the Australian city of Newcastle: the City Campus and Port City projects. These case studies illustrate that it is less environmentally damaging to stimulate growth within the established city centre rather than sprawling into new, formerly un-built areas.
Three steps from passive building design to active mechanical equipment. The designer needs to take full advantage of basic, passive building strategies first, before adding mechanical active equipment. Motto: More with less. The entire urban metabolism is based on energy supply. However, a new symbiosis between countryside and city is emerging: The century-old tension between rural and urban might finally get resolved, where the city stops to grow at the expense of its rural hinterland.
Tri-Band Bandpass Filter Using Open Loop Resonator Loaded by One Stub with Three Branches
Authors: Ma Xing Bing , Zhang Feng Shan , Liang Cai Feng
Published: February 2014

To obtain an adjustable passband filter, one open stub with three branches is loaded on an open loop resonator. The first and the third passband frequencies of the tri-band filter can be flexibly controlled by tuning lengths of three branches, whereas the second passband frequency is fixed. The fabricated filter has good tri-passband performance at 2.19, 4.26, 6.30 GHz. Measured results agree well with the simulated ones.
Research of Human Factors under Automatic ATC System
Authors: Pan Wei Jun , Wang Wen Bo , Wu Dan , Huang Chen Yu
Published: February 2014

This paper is to assess the impact of ATC automation on controller workload, situation awareness, teamwork and mutual trust, and solve the relationship between human and ATC automation system collaboration. Based on experiment statistics, the method of mathematical statistics has been used to carry on overall analysis, significance analysis and correlation analysis. As a result, in the new generation ATC automation system, the overall level of controllers workload, situation awareness, teamwork and mutual trust is relatively higher than that under traditional condition, along with the increase of the controller work experience, the teamwork consciousness and situation awareness are stronger, the workload is lower, the ATC automation system of mutual trust is higher. Teamwork, workload and mutual trust have a significant positive correlation.
Helicon Plasma Discharge for Processing Wall Material
Authors: Huang T.Y. , Jin C.G. , Wu M.Z. , Zhuge L.J. , Wu X.M.
Published: February 2014

A helicon wave plasma (HWP) discharge with strong magnetic field was investigated. The HWP was produced with an internal Nagoya III antenna that is perpendicular to the magnetic field and driven by a 13.56 MHz radio-frequency (RF) source. HWP was characterized in terms of electron density, electron temperature and plasma potential using a single Langmuir probe in Ar gas. The result of Langmuir probe shows that the electron density increases with RF power, but saturate above 700 W at a density of 2×1019 m-3. Scanning electron microscopy (SEM) was extensively used to characterize the quality of the graphite surface. The result of SEM shows the surface of graphite that exposed to plasma processing has exhibited smoother and compacter surface topography. Meanwhile, the concentration of impurity on the graphite surface decreases with plasma processing.
Numerical Simulation of Flow Field of Air-Jet in Quenching Process
Authors: Li Xin Can
Published: February 2014

The type of atomize-cool and air-cool are widely used in the world now. Air-jet is a very vital instrument in quenching by air-cooling. t is necessary to simulate the inner and outer flow-field of air-jet. By means of computational fluid dynamics soft system Fluent, numerical simulation of quenching air cooling process of air-jet was carried out. The work can support the actual production.
Research on Airborne Radar Reconnaissance Map Projection Location Error Correction Method
Authors: Zhang Xu Zhou , Zhang Guo Yi , Pu Jian
Published: February 2014

Airborne radar reconnaissance system will produce a map projection angle error in actual, which further causing the positioning error. To correct these errors, the paper proposed a map projection positioning error correction algorithm. The algorithm firstly calculate the reference point using the Mercator isometric projection, and then calculate map correction angle with the inverse projection, at last eliminating the error caused by reference distance estimation using the iterative cross positioning, which improving the location accuracy. Experiments show that this method is reasonable and effective.
Cymbal Piezoelectric Composite Transducer for Soccer Robot Attitude Detection Application
Authors: Xu Xiao Fei
Published: February 2014

This paper proposed a soccer robots attitude detection method based on the principle and vibration mode of cymbal piezoelectric composite transducer. Cymbal piezoelectric composite transducers and MEMS-based three-axis low-g sensor were set on some different support points of soccer robot's joint to accomplish attitude detection. The signal processing circuit and algorithm software were designed. The research results showed that the performance parameters of the soccer robot falling down attitude detection system based on cymbal piezoelectric composite transducer are better than the other sensor, such as the sensitivity, correct, undetected fall and stability duration, etc. The experiment results showed that the detection accuracy for falling down of the soccer robot can be 98% and the stability duration can be 60 minutes.
Correcting Synchronous Scanning OMIS Remote Sensing Images Using the Spatial Orientation Data of the Inertial Navigation System
Authors: Zhou Xiao Hu
Published: February 2014

Inertial navigation system using IMU (Inertial Measurement Unit) of the flying space positioning data POS (Position & Orientation System) synchronized scanning of the hyperspectral remote sensing OMIS (Operational Modular Imaging Spectrometer) image correction, obtaining from the IMU in sync with the attitude parameter OMIS , the coordinate transformation parameter calculation and flight attitude, according to OMIS imaging principle of mathematical calibration model, the corrected image pixel re-sampling, the image correction, and achieved better image processing results.
An Efficient Image Indexing Method Based on Class Specific Hyper Graph
Authors: Lu Kun , Xia Sheng Ping , He Song Hua
Published: February 2014

An efficient image indexing method based on class specific hyper graph is proposed. The presented indexing method works efficiently and the relevance of the original image data is enhanced. Because of that an ordered image database benefits the efficient searching. The relevance of images depends on the similarity between different images. According to clustering theory, we can take any sample image in the database as one clustering center, and then the siblings of the center and their siblings are consistently searched, which is known as similarity spread. After that, the disordered image database is sorted out and the searching result is not tedious any more. The proposed method has been tested by an open arts press image database, which shows that our method can obviously improve the indexing speed. Moreover, the indexing results make the whole image searching system capable of association.
Amorphous State and Solubility Simulation of Poly(N-arylenebenzimidazole ketone)
Authors: Cui Xiang Wang , Zhang Lin
Published: February 2014

The amorphous state of poly (Narylenebenzimidazole ketone)(PNABIK) were determined using the Amorphous Cell Module of the Materials Studio program. The solubility improvement of PNABIK compared with traditional ploybenzimidazole (PBI) was also simulated by cohesive energy density (CED) calculating. PNABIK was synthesized by N-C coupling reaction to validate the rationality of simulation results and all the simulation results were consistent with the experimental tests.
Research and Realization of Phased Array Radar Functional Simulation System
Authors: Zhang Yu , Wang Jun
Published: February 2014

In order to diminish the simulation granularity of phased array radar simulation system, modeling the target track is really necessary. This paper adds the target track simulation module and coordinate conversion module to the original functional simulation system of the phased array radar, thereby presents the frame construction, additional mathematical modules and simulate procedure of the improved simulation system. The phased array radars functional simulation system is proposed for the realization of the actual simulation software system. The simulation result verifies the efficiency of modeling method and mathematical modules.
Recalculation Yielded the Small Molecule Fragments of C3H6+ from Low Excited States of C5H8O+
Authors: Zhu Ying , Chen Hong Bin , Wu Jie
Published: February 2014

Using the CIS(Configuration Interaction with Single Substitute) method, and 6-31+G (d, p) basis set, we calculated the excited state structure and vibration frequency of cyclopentanone ion. Studies on the possible way of obtain C3H6+ small fragments by cyclopentanone ion.
Research on Water Level Trends of the Middle Yangtze River Based on Mann-Kendall and ARIMA Model
Authors: Liu Ting , Zhang Pei Lin , Xu Ying
Published: February 2014

The middle Yangtze River is the throat and hub zone of the Yangtze golden channel, and the water level is an important limiting factor of the Yangtze River shipping. This paper used Mann-Kendall and ARIMA methods to study the trend of water level changes in the middle Yangtze River. To test the time series of water level in the middle Yangtze River by Mann-Kendall test model, and to analyze the variations of water level changes. Because of the irregular of water level changes, to study the trend of water level changes in the middle Yangtze River by ARIMA model. Model results show that the majority segment of the middle Yangtze River will appear the duration of low water level in 2013-2020, and the period of high water level will have no significant change compared to historical data. This conclusion is made that helps the choice of organizational form the middle Yangtze River shipping, standardization of ship and development research strategies of the Yangtze River shipping logistics systems.
Combined Effects of Guard Rings and Buried n+ Layer on Mitigating Charge Collection and Charge Sharing in 90 nm CMOS Process
Authors: Zhang Wan Li , Yan Shao An , Tang Ming Hua , Xu Xin Yu , Mao Yan Hu , Huang Peng Cheng
Published: February 2014

A model of combining of guard rings and buried n+ layer in mitigating charge collection and charge sharing is presented in this paper. 3-D TCAD simulation results indicate that for 90-nm CMOS process, PMOS charge collection and charge sharing can be mitigated more effectively with the combination model than the solely use of guard rings or buried n+ layer. With the combination, a noticeable improvement on angled ion strikes is also represented. The model shows a significant advantage in high-energy ion strikes and angled ion strikes.
Based on Mathematical Modeling and Mathematical Experiment Course Platform Enhancing Students Innovative Ability
Authors: Li Xiao Yi , Xu Zhao Di
Published: February 2014

This paper describes the positive significance of the creation of mathematical modeling and experimental mathematics curriculum for students scientific computing and applied mathematics to solve practical problems, it analysis the mathematical modeling and mathematical experimental course, it proposes colleges in mathematical modeling and experimental mathematics teaching,we can take many forms of teaching and different levels of teaching content, thus, to raise and train studentss ability of solving practical problems by applying mathematical knowledge and innovative ability, in order to cultivate the students' innovative ability and practical ability, also, it puts forward specific practical teaching reform measures and suggestions.
ClC: G 423 Text Search: A
Problems proposed
Double Spectrums Imaging System and Image Fusion
Authors: Huang Da Hai , Ma Li Xin , Wei Wang
Published: February 2014

According to the problem of the corona discharge, a new image fusion rule based on wavelet transform was proposed, making a double spectrums imaging system about spectrum characteristic of high-voltage electrical corona. The validity and feasibility has been approved by using Matlab as the experiment platform in the paper. The experimental results show that proposed algorithm is very effective in image fusion, which fuses more details of input images and improve the locating precision of the corona detection system.
Control Simulation for Three Tank Water Level
Authors: Song Le Peng , Xu Di Jian , Shi Jin Liang , Jia Bi
Published: February 2014

Three-tank liquid level system of its vessels belonging to non-linear relationship between the coupling. In this paper, three tank level control experimental system as the research object, the establishment of the level system model, and according to the experimental requirements: upper, middle tank to stabilize the value of the lower tank eventually reaches a given value, forming a typical third-order object of study.
Human Resource Configuration Based on SEM of Waterway System
Authors: Zhou Shi Wu , Liu Yao
Published: February 2014

It is very necessary to reposition the system attributes of human resources management positions and functions, which change the waterway system human resource management from administrative, transactional and position dependent manner to an open and competitive surrounding environment. Thesis based on SEM theory, through questionnaires, data analysis and indicators interception, establish waterway system evaluation index system and weight of human resources allocation, analysis of the evaluation factor by Confirmatory Factor Analysis (CFA) and gets the result. Finally it proposes configuration follow-up management problems and The corresponding countermeasures.
Design of Low Frequency Hydrophone Based on PVDF Piezoelectric Materials
Authors: Chen Zhu En , Wan Zhou , Li Yi Yang , Liu Hao Hua , You Xi Cun
Published: February 2014

In view of the existing of low frequency hydrophone in signal detection problems such as low sensitivity, frequency range is small, In this paper, application of PVDF piezoelectric film as sensitive material of low frequency hydrophone, use its advantages as fast response, high sensitivity, good mechanical properties, and so on [1], designed a kind of low frequency hydrophone, experiments are carried out to study the detection of low frequency signal. This paper introduces the structure, material and size of the hydrophone, and analyzes the experimental data. Experiments show that the sensor stability and high sensitivity, can effectively detect the low frequency acoustic wave in the water.
Parameter Setting Based on JGPC Algorithm for Liquid Level Control System
Authors: Wu Yan Xiang , Gao Zhong Yong
Published: February 2014

Double-tank water level control system is a nonlinear system in ship. It has long cubage delay and bad anti-jamming ability in ordinary. In order to improve the dependability and security of the lever control system, a improved generalized predictive control (JGPC) algorithm was introduced. We set up a mathematical model of control system with the water tank level control device as the object. Based on the mode, the improved generalized predictive control algorithm was put forward and introduced the parameter setting of JGPC algorithm. The simulation results show that the presented algorithm has a good dynamic response performance, fast-track settings, and a preferable control effect. Experimental results show that the improved methods are reasonable and practicable.
Simulation and Analysis of Thermal Distribution in Compact Multi-Chip Module
Authors: Cui Hao Yang , Xu Yong Peng , Liu Can , Tang Nai Yun , Chu Feng Hong , Tang Zhong
Published: February 2014

One of the main failure mechanisms in semiconductor device is the thermal breakdown of compact multi-chip (CMC) module. In order to avoid the compact layout or location of the heating chips, the distribution of the chips on printed circuit board (PCB) should be optimized to decrease the thermal breakdown probability of device. Based on the finite element theory, we simulated the three-dimensional space thermal field distribution of two kinds of PCB that the same chips were layout in difference ways in this paper. By analyzing the simulation results, we can find that the maximum temperature of the optimized CMC layout will be decreased about one degree. The simulation method and the conclusion of this paper will have significance effect for CMC design and optimization.
Research on Characteristics of Plant Electrical Signal under High Voltage Pulse Stimulation
Authors: Weng Hai Yong , Ye Da Peng , Zheng Jin Gui , Li Hai Yun , Liang Xiao , Chen Shu Hui
Published: February 2014

In order to further understand the Agave americana var. marginata electrical signals in High Voltage Pulse Stimulation conditions, a new method is provided in this paper by using wavelet soft threshold noise reduction and the power spectrum analysis. The results show that the level `of its electrical distribution in uV. The plant electrical signal amplitude arithmetic mean increases with the increase of pulse stimulation signal but for a little effect on the natural frequency of the plant, its frequency is mainly distributed in the 0.07813 Hz ~0.1953 Hz.
Mechanic Model of Push-Out Test of Over-Thick CFST
Authors: Gao Jin He , Huang Yan Bin , Zhang Shou Long
Published: February 2014

Analyze mechanical behavior of over-thick concrete filled steel tube ( over-thick CFST ) subjected to axial compression and revealed adhesive slip law of steel tube/concrete. Axial symmetry elasticity modeling of the concrete column which is constrained by over-thick steel tube and pushed out under axial compressive load is set up. The push-out test was carried out and axial displacements of concrete column and steel tube were measured. On the base of the test,the adhesive layer between the concrete and the steel tube is introduced and shearing stress-shearing strain curve is set up. The results show that the adhesive stress between steel tube and concrete is uniform along the height,and uniform slipping along the height exists.Therefore the adhesive stress between steel tube and concrete can be precisely measured by push-out test of over-Thick CFST subjected to axial compression. The following conclusions can be drown that axial symmetry elasticity modeling is correct for simulating push-out test of over-thick CFST. There is an adhesive thin player between steel tube and concrete, the slip can be equivalent to shearing deformation of the adhesive layer. The relation of shearing stress-shearing strain can be determined by the push-out test.
Establishment on Comprehensive Evaluation Indication System for Leisure Sports Development Level
Authors: Zhang Lin , Wang Zhi Li
Published: February 2014

With the rapid development of leisure sports, leisure sports economy has become a new growth point of China's economy. Its difficult to evaluate the present situation of leisure sports development level, this paper uses Analytic Hierarchy Process to study. First, build a hierarchical analysis indication system structure model, and the description of each indicator; Then, in elucidating the basic idea of Analytic Hierarchy Process on the basis of a mathematical model, including the judgment matrix, the normalization process and the arithmetic average of three steps; Finally, calculate the weight of index system according to the steps of solution, and points out that the level of development impact on leisure sports four most important indicators. The research results can be system-related policies for government agencies, the development of leisure sports, building a harmonious society, such as providing new theoretical foundation and scientific methods.
The Nonlinear Dynamics Characteristics of Stock Market and its Variation
Authors: Meng Jun , Zhu Tian Yu , Chen Xiao , Yin Xiang
Published: February 2014

The stock market is a kind of complex system with all kinds of interactions. It also shows a nonlinear characteristic. In this paper, we analysed the time series from Dow Jones indexes itself and the time series from its fluctuation difference and extracted its correlation dimension and Lyapunov exponent, which shows a chaotic dynamic characteristic in it. Moreover,we also analysed the variation of chaotic characteristic indexes in long term, and found that the correlation dimension has a quasi-periodical variation and some rapid drops in some specific years.The variation of the correlation dimension can be used to reflect some internal changes in stock market.
Discrete Wavelet Transform on Near-Infrared Spectra Analysis for Moisture Determination in Lignitic Coal Samples
Authors: Yang Xiao Li , Hou Neng Bang , Shi Jun You , Li Yan Fang
Published: February 2014

We studied moisture determination in lignitic coal samples through near-infrared (NIR) technique. This research was developed by applying partical least squares regression (PLS) and discrete wavelet transform (DWT). Firstly, the NIR spectra were pre-processed by DWT for fitting and compression. Then, the compressed data were used to build regression model with PLS for moisture determination in coal samples. Three type DWTs were investigated.Determination performance at different resolution scales was studied. The results show that DWT is a very efficient pre-processing method for NIR spectra analysis.
Application and Analysis of Parametric Substructure's New Modeling Method in PCB Components
Authors: Li Hong Xiang
Published: February 2014

With the progress and development of modern society, various electronic equipments not only have been enriching our lives, but also have become an indispensable tool for people. At present, the electronic equipment is moving towards the direction of becoming more integrated, smaller and more accurate, which requires good dynamic performance and stability. This paper builds the finite element model and makes optimization and analysis for its structure through analyzing the dynamic performance of electronic components. On the basis of the analysis, this paper puts forward a new modeling method having the parametric substructure. In addition, the genetic algorithm is used to dynamically analyze and optimally combine the components on printed circuit boards. Finally through a concrete instance, this paper calculates its rationality and validity.
Study of Audio Circuit Board Testing System of some Station Based on DSP
Authors: Peng Yun Feng , Shu Chang , Tan Xiang Lin
Published: February 2014

In this paper, the developed audio circuit board testing system of some station based on DSP is used to realizing the auto acquisition and testing of the parameters of audio signal, and we use touching screen to realize man-machine interactive and real-time display testing results. The detecting process accurate and quick , so it can be widely used in the testing , checking, maintenance, fault location and so on of the stations audio circuit board.
Analysis of Lower Limbs Dynamics and its Application in the Sports Training Based on Computer Vision
Authors: Jing Sheng Gang , Wan Wen Yuan
Published: February 2014

The lower limbs dynamics analysis model was researched, and applied it in the ports training based on computer vision. Through theoretical analysis and computer visual simulation, the detailed theoretical and simulation data was obtained for the lower limbs torque value, which was applied to sports training. Using the computer simulation technology, the human lower limbs skeletal dynamics model was established on the computer visual simulation platform. The joint torque values in different sports models were calculated for analyzing the optimum force and power mode. In the model building process, the single leg support motion model and running model were constructed, and the lower limbs dynamics analysis was implemented for the two models, calculating the joint torque values in theory and simulation. Finally, the ADAMS software was used for dynamic visual simulation in computer vision. Simulation results can show the force torque values vividly, the simulation result and theoretical result are compared and analyzed, it provides important data references and effective theoretical guidance in sports training, and it is meaningful for the optimization of physical training and improvement of training effect.
The Spatial-Temporal Change Pattern of Wetland in the Middle-Lower Yangtze River: A Case Study of Wuhu, Anhui
Authors: Tao Xiao Li , Bai Yong Ping
Published: February 2014

Wetlands play a number of roles in the environment, which are also considered the most biologically diverse of all ecosystems. Utilizing RS and the GIS software, remote datum were matched and classified. By these transactions, the temporal and spatial changes of wetland landscape are explored in Wuhu, combining qualitative analysis and quantitative methods. This paper analyzed the time-spatial revolution process which indicated that, firstly the area of wetland reduced rapidly from remote sensing image in 1988, 2001 and 2005, secondly the exterior of urban changed acutely and the interior were protected well in view of spatial pattern. Moreover, driving force factors were pointed out. Human activities, especially urbanization were the main causes of wetlands degradation. Simultaneity, the development of farming, the construction of infrastructure and nature were important factors. Owing to rapid economic development and urban sprawling, wetlands are encountering threaten to be converting to other land uses. Thus, the paper provides policy advices for wetland conservation and urban planning toward sustainable development.
Numerical Simulation of Heavy Rail End Induction Heating Temperature Field
Authors: Xu Chun Ming
Published: February 2014

Rail end quenching temperature field calculation is quenched in the process of simulation of organization transformation and distribution of the foundation, the calculation for quality directly affects the organization field. As much as possible in order to make the temperature field of simulation accord with the facts, this chapter will give full consideration to the influence of the phase change latent heat on temperature field of heavy rail, under different heating time by comparing the different heavy rail track the hardening layer depth, it is concluded that heavy rail of the induction heating 40 s conform to the requirements of the project, made a theoretical support to practical production.
The Research on Online Measurement System of Stone Slab Based on Improved Sobel Operator
Authors: Qin Zi Fang , Zhao Min , Zhang Lin , Zhang Guo Ying
Published: February 2014

A method of online measurement system of stone slab based on Sobel operator improvement is proposed in the paper in order to improve accuracy and productivity of stone slab measurement. Through adding Sobel operator model, they are combined with mathematical morphology method to improve the accuracy of boundary extraction of irregular stone slab and by establishing camera calibration theory formula a relation between world coordinate and image coordinate is set up. The result show that the method can implement online measurement of stone slab and the accuracy of this system can satisfy requirements of stone production industry.
The Image Enhancement Technology Based on Lifting Wavelet
Authors: Guo Fu Tian , Liu Xin Hong , Zhao Cun
Published: February 2014

There are many disadvantages for Image enhancement with Mallat wavelet, such as huge computation, bad real time capability and difficulty to realize by hardware. To solve these problems for enhancing non flowing and discontinuous image, introducing the use of lifting wavelet with the adaptive predicting coefficient and the updating coefficient. The experiment result shows that the image enhancement based on lifting wavelet enhances the image and restrains the noise, brings better effect of image enhancement, and improves the arithmetic speed.
Computer-Aided Design of Ultra Wideband Planar Monopole Antenna with Defect Ground for EMC Testing in Communication
Authors: Ruan J.Q. , Tan K.B. , Lu H.M. , Song Y.C. , Fan F.F. , Su T.
Published: February 2014

In this work, a monopole antenna with defect ground is proposed for ultra wideband EMC measurement in communication system. The antenna is fed by micro-strip. It is demonstrated that the antenna provides an impedance bandwidth ranging from 2.5 GHz to 13.5 GHz (for VSWR < 2) and supports an adequate pattern.
An Improved Road Roughness Simulation Method Based on Trigonometric Series Method
Authors: Wang Xi , Zhao Jiang Bo , Wang Jun Zheng
Published: February 2014

Accurate road data is critical to vehicle ride comfort research. Trigonometric series (TS) method is widely used in road roughness construction, but the accuracy of the road data in time domain is not high and the power spectrum density (PSD) exits poor convergence problem. To solve the above problems, this paper has made two improvements: generate random frequency in each band using the local PSD function, optimize phase angle using the principle of minimum energy. The simulation results show that the improved method has higher precise and better convergence of PSD.
Performance Improvement of Group Coding with RF Tags on Missing Objects Detection and Data Recovery
Authors: Chen Chen Xi , Wang Dong
Published: February 2014

Radio Frequency Identification (RFID) provides a non-line-of-sight and contactless approach for object identification. In the supply chain, objects are usually assembled into a group and RFID system enables us to quickly identify a group of objects. However, RFID system only provide the identified objects ID, unable to provide the missing objects IDs. This paper concerns the problem of missing objects detection and missing unique IDs recovery. In supply chain, a traditional method of items lost detection is encoding a group of objects ID before the shipment, and decoding when examine the integrity of the objects. In this paper, we propose a new scheme for missing objects detection and missing IDs recovery, which is called Linearly Independent Vectors Based Group Coding, abbreviated LIVGC. A numerical simulation reveals that the proposed method have higher recovery rate (>20%) than the EGC scheme in the same length of redundancy code.
Biological Effects of Electromagnetic Radiation and Protection
Authors: Zhao De Chun , Zhang Long Sheng
Published: February 2014

With the development of science and technology, electronic equipments are widely applied in society. Electronic equipments make life more convenient and efficient. However, a variety of harmful electromagnetic radiation is generated when the electronic equipment is working. The electromagnetic radiation not only affects the normal operation of other electronic device but also pollutes the environment survival for human. Furthermore, electromagnetic radiation is harm to human. Therefore, it is important to take measures to prevent various electromagnetic radiations. Firstly this paper introduces relevant knowledge of electromagnetic radiation and standards on electromagnetic radiation. Then, it analyses the biological effect of electromagnetic radiations according to the radiation distribution of cell-phone. Finally, it proposes protective measures based on the study of the biological effect.
A Design of Direct Sequence Spread Spectrum Module with Variable Bandwidth Based on FPGA
Authors: Cai Guang Hui , Zhu Ruo Xin , Li Wen Long , Zheng Shu Wen , Yang Jun
Published: February 2014

To make data bandwidth changeable and suit for different communication situations, thereby improving the utilization rate of hardware, this paper designed a direct sequence spread spectrum module with variable bandwidth and could used in a variety of occasions based on m sequence code generator with configurable series. The programmable m sequence code generator create a number of different pseudorandom sequence using FPGA programmable features and do XOR operation with signals waiting transmit. There for, it can achieve the purpose of spread spectrum. As the series can be changed, this module could fit normal communication, communication experiment, or other communication area which need high security level.
Electromagnetic Response for Horizontal Electric Dipole Source Considering Conduct & Displacement Current
Authors: Yan Jia Bin , Huang Xiang Yu , Wu Peng Yu
Published: February 2014

Electromagnetic (EM) field is often referred to diffusion (quasi-static assumption) that displacement currents are neglected during data processing in geophysical application, while the ratio of conduct currents to displacement currents is higher than 10, that is ,we think EM field is diffusion dominated and wave dominate for the ratio less than 0.1. Our simulating with Horizontal Electric Dipole Field indicated that frequency range of wave dominated is that the ratio is less than 0.007, the magnitude curves of EM component and impedance referring to diffusion and wave are different from those of diffusion. And in transform zone () the curves are different from those of wave and diffusion.
Study on High Temperature Stability Index of Asphalt Mixture
Authors: Liu Fu Ming
Published: February 2014

High temperature stability of asphalt mixture is one of asphalt pavement major performance which concerns the permanent deformation of the pavement. Four different gradations were used to detect the mixture high temperature stability, dynamic stability or short for rut distortion for regress time was obtained from regression for the data of rutting test, and the test indicates that either of these two indexes can better characterize high temperature stability of asphalt mixture.
Regions of Interest Detection Algorithm Based on Improved Visual Attention Model
Authors: Xu Zhen Hui , Yang Jun , Zhang Wan Jun , Yang Zhen Jun
Published: February 2014

Regions of Interest (ROI) detection algorithm based on Visual Attention Model can rapidly focus the attention in the conspicuous target region, and extract the interested region. As to some complicated scenes, it is very difficult to detect the target accurately by using general target detecting method, but using Regions of Interest detection algorithm based on Itti Visual Attention Model can detect the target position very well. But pay attention to Itti Visual Attention Model, it utilizes the luminance, color and texture character of the target to detect the position of it. As little moving target, these characters of it are not obvious, so the detecting result is not satisfactory that utilizing Itti Visual Attention Model directly. According to the problem, this text proposes one Regions of Interest detection algorithm on the basis of improved Itti visual attention model by introducing movement character. The experiment shows that the improved model puts forward a new thinking of little moving target detection.
A Calculus for Concurrent Processes with Cryptographic Primitives
Authors: Wang Huan Bao
Published: February 2014

We introduce cryptographic primitives to the symbolic transition graph with the binary equivalence relation based on the CCS language with value-passing processes, which is designed for the description and analysis of security protocols. The STGR with cryptographic primitives, which is an extension of the STG, is applied to partition domains of conversations of security protocols that run in an infinite concurrent way, where principals possessing their relevant keys have received and transformed the message. The cryptographic primitives enable us to consider cryptographic issues on the principal conversations of security protocols in more detail. Our work results in a highly efficient solution to reduce computational complexities to prove safety properties of security protocols.
Integrated Processing Effects on Ink Wastewater of 500t/Day
Authors: Yang Jian She , He Liang
Published: February 2014

By adopting chemical coagulation + efficient sedimentation tank + hydrolysis acidification composite reactor + biological contact oxidation tank + Biological Aerated Filter + adsorption filter integrated processing design, the wastewater from ink production and printing ink application has been treated here. The testing results shown that the effects of the integration treatment process on Ink Wastewater of 500 tons per day are reasonable. The cost of the process is not more than 1.8 Yuan/t, and it can be a better integrated process.
Design of Circular Patch Microstrip Antenna with Egg Slot for 2.4 GHz Ultra-Wideband Radio Frequency Identification (UWB RFID) Tag Applications
Authors: Rudy Yuwono , Wahyu Dwi A. , Muhammad Fauzan Edy P.
Published: February 2014

This paper discusses concerning design of circular patch microstrip antenna for Radio Frequency Identification (RFID) tags application in microwave band. Circular microstrip antenna is designed with an egg slot on the ground plane and feed line to get ultra wideband. The design of microstrip antenna using Phenolic White Paper-FR2 with dielectric constant (or) =4.5. Based on simulation results, the antenna shows it works at frequency 2128-4807 MHz with gain of-17,398 dBi. The rectangular stub, caused the decreasing of bandwidth but the gain increase. By adding a rectangular stub on the ground plane, antenna works at frequency 1166 3475 MHz with increasing gain of-2,733 dBi.
Calculation of 3D Fluid Flow Field and Thermal Field of Air-Cooled Medium Motor
Authors: Hu Tian , Li Yan , Tang Ren Yuan
Published: February 2014

For a medium air-cooled asynchronous motor, the physical model of cooling air inside the motor was established to research the air flow distribution and characteristics of the internal flow of the medium motor. By the finite volume method according to the computational fluid mechanics (CFD) principle, the three-dimensional turbulent flow field in computational domain was simulated numerically using boundary conditions of the pressure inlet and outlet obtained from engineering calculations. From the result, the thermal field of stator and rotor was calculation. The results show that the wind speed of cooling air duct which near the both ends was higher than the middle. It causes the temperature of the motor which near the both ends was lower than the middle part. The maximum temperature rise of the motor appear in the middle of the upper windings, and the specific value was 74K.
Analysis of Wireless Energy Transmission Characteristics via Magnetic Resonances Based on Mutual Inductance Model
Authors: Zhao Zhi Qiang , Chen Yong Hui , Fu Min Jie , He Chun Lan , He Jian Jun , Pang Yu , Li Guo Quan , Lin Jin Zhao
Published: February 2014

The analysis of magnetic coupling resonance based on Mode Coupling theory is often complicated and abstract. Moreover, this theory is inconvenient when it comes to designing the circuits. Based on the mutual inductance in the circuit, we completed theoretical derivation, parameters calculation and circuit simulation for each of the two-coil and the four-coil structure. The received power and the transmission efficiency under different conditions are analyzed and compared. Experimental results show that too high or too low resonant frequency will affect the efficiency of transmission and reception of energy in the two-coil structure, a problem of optimal distance for energy transmission is existed in four-coil structure, the resonant frequency of the system will also affect the distance.
An Improved Weighted Centroid Localization Algorithm in WSN
Authors: Zou Dong Yao , Lv He , Zheng Dao Li , Han Teng Fei
Published: February 2014

This paper presents a weighted centroid localization algorithm which based on the nearest beacon node. It utilizes Beacon nodes From the unknown node nearest to correct ranging error caused by RSSI distance, Increased unknown node capability which adapt neighboring nodes distributed environment. Improved the positioning accuracy,. Simulation results indicate that the Positioning accuracy of Improved Algorithm which is Proposed in this article has been significantly improved, the highest Enhanced can up to 30%.
Design and Implementation of High-Precision Mine-Used Water-Pressure Sensor
Authors: Wang Rui Xue , Zhang Na , Xu Le Nian
Published: February 2014

A novel mine-used water-pressure sensor is presented in this paper, the configuration, working principle and design of main circuits are introduced in detail. Using pressure sensor, high precision 24 bits A/D converter AD7714 and low power consumption MCU P89LPC932 to complete the water-pressure measurement, and transferred the measuring results to upper computer through M-BUS, realized the stability measurement of high precision and low power consumption.
A Study on the Cognitive Process of Stereopsis in Small Uncrossed Disparity
Authors: Wu Yan , Li Qi
Published: February 2014

Static random-dot stereograms (RDS) were used as stimuli to investigate the uncrossed disparity in 15 normal subjects. The response of every subject was recorded with different disparities of 3.27 arc min, 6.54 arc min, 8.18 arc min, 11.45 arc min, 14.72 arc min, 17.99 arc min, 21.26 arc min and 24.53 arc min. The results showed that the human visual system was the most sensitive to stereo images at disparity of 8.18 arc min. Disparity of 21.26 arc min had significant differences with other small disparities in reaction times, as supported the viewpoint that it was reasonable to limit the fine disparity in 20 arc min.
Application of Radar Velocity Tomography for Detecting Coal and Gas Outburst in Deep Coal Mining
Authors: Du Cui , Xu Xin Jun , Li Xing Yu
Published: February 2014

Among the main geological factors to cause the disasters of mine safety production in deep mining, coal and gas outburst is the first major calamity that restricts colliery exploiting. Aiming at this problem, current geophysical methods were reviewed and compared, and the velocity tomography technology using ground penetrating radar was studied. Two models with ground stress anomaly and collapse columns were built and inverted using LSQR algorithm, respectively. The results show that the proposed method gives very consistent results with respect to the models information, and uncertain features of inverted models were identified accurately. This verified radar velocity tomography is effective and practical.
Experiment and Analysis on the Failure Regularity and Mechanism of a Certain Radio Fuze under Continuous Wave Irradiation
Authors: Xiong Jiu Liang , Wu Zhan Cheng , Sun Yong Wei , Yang Jie
Published: February 2014

Different styles (invariable amplitude, sweep frequency, amplitude modulation) of continuous wave irradiation experiments are done on a certain radio fuze, and the failure regularity are summarized. The accidental explosion reasons are generally illuminated, and the failure mechanism under different irradiation conditions are particular analyzed. Finally, the failure regularity and mechanism of different irradiation conditions are compared. The results show that different electromagnetic environment will have different effects on the same fuze, and the failure regularity and mechanism are also different.