bluuebunny/crossref_metadata_2025 huggingface dataset:
An New Optimal Decision Threshold Criterion for Broadband-Based Energy Detection with Performance Constraints
Authors: Liu Wen Wen , Yuan Long , Liu Zi Yang , Peng Tao , Wang Wen Bo
Published: September 2013

We study on the energy detection algorithm of spectrum sensing. The performance of energy detection in spectrum sensing is measured by the false alarm probability and the missing detection probability. In a certain spectrum sharing environment, whether the energy detection algorithm can meet our requirement is depending on the length of observation time and the decision threshold selected. Several experiment results have shown that: when the decision threshold is too low, it will cause much more false alarm; when the decision threshold is too high, it will bring many missing detection. Therefore, it is crucial that choosing an optimal decision threshold according to the length of observation time. In this paper, the closed-form solution of the minimum-cost decision threshold is deduced by using the methodology of mathematical derivation, and a new criterion about selecting an optimal decision threshold is also proposed. At last, the conclusion is proved by simulation.
Allelopathic Effects of the Dried Macroalga Ulva pertusa on the Photosynthetic Apparatus of Red Tide-Causing Microalga Skeletonema costatum as Probed by OJIP Chlorophyll a Fluorescence Measurements
Authors: Ye Chang Peng , Zhang Meng Cheng
Published: September 2013

Allelopathic effects of dried macroalgaUlva pertusa(Chlorophyta) on photosynthesis of the microalgaeSkeletonema costatum(Bacillariophyta) were evaluated using coexistence culture systems.S. costatumwas cultured with different biomass of driedU. pertusaunder controlled laboratory conditions for three days. The chlorophylla(Chla) fluorescence transient O-J-I-P curve coupled with its specific parameters inS. costatumwas established. The Chl a fluorescence transients were recorded in vivo at high time resolution and analyzed according to the JIP-test which can quantify photosystem II activity. A clear dose-dependent relationships were observed between the dried biomass ofU. pertusaand its inhibitory effect onS. costatum.A decrease in the O-J-I-P curve expressed as Chlafluorescence intensity along with its specific parameters were observed, which was also time-dependent. The main photosynthetic inhibitory targets of the macroalga on the microalga, according to the JIP-test, can be expressed as a decrease in the number of active reaction centers and the blocking of the electron transport chain. The results of the present study suggest that dried fragments ofU. pertusaeffectively inhibit photosynthesis inS. costatum.
Research Progress on Manual Ice Measurement Devices for Overhead Transmission Lines
Authors: Yang Jia Lun , Zhu Kuan Jun , Liu Bin , Si Jia Jun , Yin Quan , Jiang Liang Hu
Published: September 2013

Sufficient icing data are very important for the design and operation of power grid in the places with potential accreted ice, meaning that it is necessary to pay due attention to the ice measurement devices. In this paper, the current ice measurement devices are classified into different types according to corresponding classification criteria with the aim of understanding the characteristics of each type of devices. Moreover, the research progress of the manual ice measurement devices are introduced in detail, including the diameter of conductors, the angle between conductor and wind direction. Finally, the existing problems are proposed for the further development of manual ice measurement devices for overhead transmission lines.
Measuring Technology and its Application for an SI Model
Authors: Jiao Yu Juan
Published: September 2013

In this paper, we consider an SI model with cross-diffusion, and show that the measuring technology and its application, namely, the cross-diffusion is able to induce the Turing instability under some conditions.
Research on Remote Fault Diagnosis of High Voltage Circuit Breakers Based on LabVIEW
Authors: Zhang Pei , Zhao Shu Tao , Shen Lu , Guo Jing , Tian Xiao Qian
Published: September 2013

In order to ensure the reliability of the operational of circuit breaker, we used intelligent monitoring unit to realize the high-speed acquisition of the electrical, mechanical and insulated signal in the operation of the high voltage circuit breaker and actuator. Combined with signal processing and fault analysis theory, we estimate the operating status based on the accurate acquisition of the various operating parameters in breaker actuator. We also developed a system of remote online monitoring of circuit breaker status and fault diagnosis. The system ensures reliable operation of the circuit breaker. It also provides fast and accurate information for operation scheduling and maintenance personnel and accumulates large amounts of raw data for the state overhaul of the circuit breaker.
A Reliable Spectrum Sensing Strategy Based on Multiple-Antenna Technique
Authors: Lv Shou Tao , Dai Ze Yang , Liu Jian
Published: September 2013

In this paper, we propose a reliable spectrum sensing strategy based on multiple-antenna technique, called RSS-MAT, to combat the channel uncertainties. We derive the closed-form expressions of the false alarm probability and detection probability for RSS-MAT. Finally, we present simulation results to validate our performance analysis. As expected, the simulation results show that RSS-MAT outperforms the spectrum sensing strategy with single antenna.
Research on the Design Method of Single Rotor Eddy Current Retarder
Authors: Tang Pei , Xia Ji Sheng
Published: September 2013

This paper introduces the structure of the single rotor eddy current retarder. The formula of braking torque with single rotor eddy current retarder was deduced by the appliance of the theory about source and field. The design method of single rotor eddy current retarder was put forward . The bench test was carried out, and the test shows that the braking torque of single rotor eddy current retarder can meet the requirement of real car.
An Improved Neural Network Algorithm and its Application in Fault Diagnosis
Authors: Yan Tai Shan , Guo Guan Qi , Li Wu , He Wei
Published: September 2013

Aiming at BP neural network algorithms limitation such as falling into local minimum easily and low convergence speed, an improved BP algorithm with two times adaptive adjust of training parameters (TA-BP algorithm) was proposed. Besides the adaptive adjust of training rate and momentum factor, this algorithm can gain appropriate permitted convergence error by adaptive adjust in the course of training. TA-BP algorithm was applied in fault diagnosis of power transformer. A fault diagnosis model for power transformer was founded based on neural network. The illustrational results show that this algorithm is better than traditional BP algorithm in both convergence speed and precision. We can realize a fast and accurate diagnosis for power transformer fault by this algorithm.
Research of Computed Tomography Inversion Algorithm for Coal Face Based on Ground Penetrating Radar
Authors: Yang Feng , Du Cui , Peng Meng , Feng Ze Quan , Sun Yang Yang , Li En Lai
Published: September 2013

Currently, mine safety is the focal point in mining activity. As a new and advanced approach for geophysical prospecting, the ground penetrating radar (GPR) is used in the mine disaster detection. Aiming to solve the restriction of low resolution and limited depth of the GPR in the deep coal seam detection, the computed tomography (CT) technology is employed for deep disaster detection in this paper. A large number of coal seam digital simulation model, including different internal diseases, are established, and the simulation data are processed by using the Least Square QR-factorization (LSQR) inversion algorithm, which has the good performance in saving computational time and memory space. Additionally, the influences of iteration precision and grid size on the effect of inversion are analyzed. The inversion results show good agreements with simulation model feature configurations, and the diseases objects can be detected.
Design of Semi Physical Simulation Platform for Autonomous Underwater Vehicle
Authors: Yang Yi , Pang Yong Jie , Zhang Lei
Published: September 2013

To verify the system software logic of a newly designed autonomous underwater vehicle and the hardware architecture, data interface and reliability of the intelligent control system, the semi physical simulation platform was established by combining physical simulation of decision layer with virtual simulation of perception and behavior layer. The hardware and software architecture of the simulation platform were explained in detail. The virtual simulations of motion, sensors and physical simulation of intelligent control system were described. Finally, the obstacle avoidance simulation and long voyage simulation tests were conducted, and the platform is important for the success of sea experiments.
Analysis on the Static Features of Flame Images
Authors: Du Jing , Yan Yun Yang , Wu Xi Yin , Liu Yian
Published: September 2013

Fire detection based on images is an effective method for fire prevention, especially in big room or badly environment. It is important to extract the features of a flame image. According to the idea of visual saliency in computer vision, saliency model of brightness, color and flame texture are proposed here. The saliency of flame brightness is indicated by the V component in HSV color space. The saliency of flame color is expressed by the relation of R and B in the RGB color space. The saliency of flame texture is described by the distance between the feature vectors which are the combination of features with Local Binary Pattern. Experimental results show the saliency model is effective for flame feature extraction.
Research on Fuel Cell Power Generation System Model with Grid
Authors: Zhou Ming Hua , Su Qun
Published: September 2013

The paper take the solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) as the object, studies the influence of the fuel cell on load characteristics of the distribution network. Structures based on Matlab simulation platform contains the SOFC typical distribution network, and a series of transient simulation was conducted, results indicate that the SOFC power generation system can be describe in its equivalent model based on the URL equivalent circuit-order differential equation of state. On this basis, the access to the distribution network SOFC power generation system regarded as power consumption of the negative dynamic load, proposed containing the SOFC can be to the equivalent the GSLM model containing the SOFC described distribution grid load characteristics.
Analysis and Research on Accelerated Storage Reliability of Electronic Devices
Authors: Peng Zhi Ling
Published: September 2013

On the basis of analysis of electronic equipment failure modes, Put forward the initial failure of the accelerated storage reliability model of electronic equipment, Related theory. Related theory, Accelerated storage of electronic equipment reliability prediction model is established and solved. Provides a reliable means for the accurate prediction of storage reliability to be determined under storage conditions.
Design of Control Module for Serial DAC Based on FPGA
Authors: Liu Cai Hong , Ji Jin Shui , Qi Ai Qin
Published: September 2013

In order to increase the flexibility of control for serial DAC, a new control method for DAC based on FPGA is proposed in this paper. A state transition diagram can be drawn according to the timing diagram of DAC, Which can be realized in FPGA using Very High-speed Integrated Circuit Hardware Description Language. The simulate results show that logic in FPGA is consistent with the requirements. The module based on FPGA can be modified just by modifying software, not the hardware.
Realization of Electronic Scoring Device on Ball Games
Authors: Wang Ping , Chen Bin , Su Guo Dong , Chen Bing Jie
Published: September 2013

Aim to the current popularity of various sports which scoring device is inconvenient and defective scoring, this design uses 51 MCU control, battery power, digital display, input keys and wireless control module to develop a portable smart match electronic scoring device. The device has a charging indicator, ball selection, single-sided display settings, size of the Bureau of scores shows that beep audio prompts, change sides scores mobile, long distance remote control and other functions; particularly compact and portable, which one could keep working dozens of hours without any power, and you can add large-screen display, which perfectly suited all size of table tennis, badminton, volleyball and basketball games in the stadiums.
An LED Driver Based on MCU for LCD Backlight
Authors: Chen Guang Hua , Sheng Gui Zhi , Wang Feng Jiao , Zhou Wen , Xiao Bin Jie
Published: September 2013

in order to provide LCD backlight with multiple strings of LEDs, an LED driver based on MCU is proposed in the paper. A PWM signal is generated by the Pulse Width Modulation (PWM) module on the MCU chip, which is used to drive a DC-DC boost converter for LED power. The voltage and current of the boost circuit, along with all the channels current of LED, are measured by the Analog Digital Converter (ADC) module on the MCU chip, which are used to adjust the voltage of the boost circuit and supply comprehensive protection for the LED driver. To minimize the step size of the output voltage, the joint frequency-pulse width modulation scheme is proposed to regulate the output voltage of the boost circuit to an ideal value in the range of error, which increases the efficiency of the power. The measurement results show that the LED driver is extremely efficient and steady. Most of the output voltage step size is about 0.1V, the maximum step size is less than 0.3V. The conversion efficiency of the DC-DC converter is up to 94%. Thus the LED driver not only meets the demand of the parameter of LED, but also has high cost performance.
System Design and Hardware Explorer of Data Acquisition Card Based on PCI9054
Authors: Wang Jian Min , Bang Chun Cheng , Liu Jia Qing , Gui Tai Long
Published: September 2013

in this paper, a class of the PCI data acquisition card using the professional interface chip PCI9054 and FPGA was designed, and the read and write transfer of PCI bus protocol were analyzed and implemented. Firstly, the architecture of system was proposed based on analysis of present design. Then, the detail design procedures are given, especially the logic control module and the SDRAM controller module. Its used the algorithmic state machine for the design of the modules in the FPGA. The ASM is the advanced state machine in present, and its worth to study. This paper used the hardware language to finish the entire programmer in the FPGA. The simulation results shown that the design proposed in this paper performed well.
A New Technology of Pulse by Pulse for NPC Three-Level Inverters
Authors: Wu Liang , Yang Yong , Zhu Zhong Kui
Published: September 2013

When Neutral Point Clamped (NPC) three-level photovoltaic grid-connected inverter is overloaded or in short state, the control by software could not judge immediately, but the power switch components of the inverter would be broken. The technology of Pulse by Pulse is an important method to protect the power switch components. This paper studies the principle of traditional technology of Pulse by Pulse, then analyzes a new technology of Pulse by Pulse based on Complex Programmable Logic Device (CPLD), finally a 3KW NPC three-level grid-connected inverter is set up with the new technology of Pulse by Pulse and the feasibility is demonstrated through the experiments.
Reactive Power Compensation of the Distribution Power System with Distributed Generation Using Improved Tabu Search Algorithm
Authors: Lei Xiang , Li Yan , Wang Shao Rong , Zhao Hong , Zhou Fen , Chen Zeng Sheng
Published: September 2013

Taking account of the mutual impacts of distributed generation and reactive power, to determine the optimal position and capacity of the compensation device to be installed, the paper proposed an improved Tabu search algorithm for reactive power optimization. The voltage quality is considered of the model using minimum network active power loss as objective Function. It is achieved by maintaining the whole system power loss as minimum thereby reducing cost allocation. On the basis of general Tabu search algorithm, the algorithm used memory guidance search strategy to focus on searching for a local optimum value, avoid a global search blindness. To deal with the neighborhood solution set properly and save algorithm storage space , some corresponding improvements are made, thus, it is easily to stop the iteration of partial optimization and it is more probable to achieve the global optimization by use of the improved algorithm. Simulations are carried out on standard IEEE 33 test system and results are presented.
Vibration Energy Harvesting System Based on Magnetically Controlled Shape Memory Alloy
Authors: Zhang Qing Xin , Wang Lu Ping , Xie Yu Huan , Cui Zhan Bo
Published: September 2013

Aiming at the problem that the generation power of the vibration generator is small, which is based on current electromechanical energy transducer materials, the conventional circuit could not meet the power supply requirement of the load. First of all, the principle of vibration energy harvesting is analyzed. Furthermore, a new vibration energy harvester based on magnetically controlled shape memory alloy (MSMA) is designed, which were introducing to the intelligent power circuit. The vibration energy harvester based on MSMA solved the problem of low electromagnetic signal change and less deformation that based on other intelligent materials. Last but not least, simulation results show that the new intelligent power circuit can harvest the output power and drive the load to work. Comparing with traditional harvesting circuit, it is superior with lower power consumption and higher efficiency of energy conversion and energy harvesting.
Posture Correction Device Based on LabVIEW
Authors: Zhu Lei , Wang Hui Jun , Li Wei Wei
Published: September 2013

In order to protect the health of people who often use computer, a posture correction device based on LabVIEW is proposed in this paper. The posture correction device consists of host computer and slave computer. Host computer is composed by graphical user interface (GUI) programmed by LabVIEW software in PC. Slave computer is composed of the C8051F340 processor with on-chip universal serial bus (USB) peripherals, three ultrasonic sensors HC-SR04 installed on the top, left, right side of the computer display measuring distance between user and PC, and humidity & temperature sensor DHT11. Through GUI and USB communication, host computer can get user instructions and connect and control the slave computer to finish the functions of calculating the distance between user and PC and collecting the humidity and temperature data. Experimental results show that the presented posture correction device has a humanized GUI and can be used expediently and easily.
Virtual Screening in Chinese Herbs with Multi-Target Effect on Alzheimer's Disease
Authors: Zhang Yan Ling , Wang Yuan Ming , Qiao Yan Jiang
Published: September 2013

Multiple targets which closely related to Alzheimer's disease (AD) pathogenesis were selected for pharmacophore models generation and virtual screening in Chinese herbs. The targets comprised Acetylcholinesterase (AchE), muscarinic receptor 1 (M1), γ-secretase and glycogen synthase kinase 3β (GSK-3β). The pharmacophore models, which of AchE inhibitors, M1 agonists, γ-secretase inhibitors and GSK-3β inhibitors, were constructed by distance comparison method. Four testing databases for the evaluation of pharmacophore models were constructed with the active compounds with clearly marked activity on each target. The metric CAI (Comprehensive Appraisal Index) was then used to evaluate and obtain the best pharmacophore models of each target, which were then applied to screen the Traditional Chinese Medicine Database for potential active compounds in Chinese herbs. Four common used herbs were obtained, which contain the active compounds and can act on multiple targets, and were expected to have multiple activity of anti-AD disease.
Design of Intelligent System for LED Lighting Based on PWM
Authors: Dong Da Bo , Chen Di , Zhao Bai Qin , Wu Nan Jian
Published: September 2013

For the disadvantage of traditional lighting system such as low energy utilization and poor dimming performance, a new intelligent system for LED lighting based on PWM is proposed. The basic principle of the system is discussed and the solutions of the hardware and software are designed. Using the PWM dimming technology, the data from the infrared detector and photo resistor is processed in the MCU to generate PWM signals, which control the switch and regalute the brightness of the LED according to the ambient light. Because the opening and closing of LED takes a form of gradual change, human eye is not fell the dramatic changes of brightness which can contribute to protecting human vision. The results show that this embedded system has a simple structure, small volume, and good real time ability. This system will meet the demand of energy saving, which will be widely applied in many fields such as mine, corridor and underground parking.
A Multitask Parallel Algorithm Based on Multi-Core Processor
Authors: Wang Qian Jin
Published: September 2013

Multi-core processor has been a hot topic since it improves operation speed. It is not easy to get efficient parallel processing data algorithms because of waste of hardware resources. In this paper, a novel multitask parallel algorithm based on getting common substring of two strings is described in order to improve the data-handling capacity of the multi-processor. Firstly, this algorithm performs Task Parallel Library (TPL) in VS.NET, and then schedule the algorithm proposed in this paper to process data. This algorithm is tested by actual parallel data. The results demonstrate that this algorithm overcomes the problem of waste of hardware resource, can take full advantage of the features of multi-core parallel processing data thereby enhancing the parallel speedup, greatly improving the efficiency of data processing.
System Modeling and Simulation for High-End Equipment Manufacturing Industry Technical Innovation Influence Factors
Authors: Yu Zhao Ji , Jin Zhong
Published: September 2013

Analysis the influence factors of high-end equipment manufacturing industry technical innovation, divide them into three dimensions which are the internal control factors, internal and external coordination factors and external development factors, establish a 18-indicator-index system, and use system dynamics method to modeling and dynamic simulation, in order to provide theoretical guidance for improving the high-end equipment manufacturing industry technical innovation ability, and promote the development of high-end equipment manufacturing industry.
Application of the Kalman Filter in the Rate Gyroscopes of Ship-Borne Servo System
Authors: Wang Xin Rong , Tao Min , Geng Wen Jian
Published: September 2013

The gyro stabilization loop is very important part in the Ship-borne Servo system to keep stable tracking. Based on the controlling structure of the gyro stabilization loop of Ship-borne Servo system, the theory of stabilizing the ships shaking is introduced and the signal of Gyroscopes is analyzed. The Kalman filter used in the gyro stabilization loop is put forward based on the famous Singer Model. The simulation on the real measured data is carried on. The result of simulation shows that this method can highly decrease random error in the Gyroscopes output and the ability of isolating the ships shaking can be improved more.
Encoding and Reconstruction about Video Image via Compressed Sensing
Authors: Liu Fu , Fu Wen Wei , Tang Hui
Published: September 2013

A new method for encoding and reconstruction high quality video image is given in this paper which uses the theory of compressed sensing. First the image frame of video is transformed into DCT domain. Then Image coding and decoding process using CS theory is given, frame I in image sequences is coded by frame coding mode after doing CS sampling to the DCT coefficients and the difference vector dv of the t-th fame for fame P. CS reconstruction and IDCT are done during decoding. Finally, the high quality reconstructed image is obtained. The experimental results shows that for images with sparseness, the image coding and decoding system integrated with CS theory and its methods can be used to obtain reconstructed images with high quality, and comparing with DCT and IDCT method, the method has some improvement in the term of PSNR for general images.
Recognition of MQAM Signals in the Aeronautical Communication
Authors: Huang Guo Qing , Zhang Cheng Gen , Yuan Hong Bo
Published: September 2013

For the complex recognition of signals in the aeronautical communication, the recognition of the star-type MQAM signals is studied under the aeronautical channel. The different scenarios of the aeronautical channel are analyzed and the reasonable channel model is established. The high order cumulant recognition algorithm which applies to the aeronautical channel is proposed, the invariant classification characteristics of modulation signals are constructed by this algorithm, and this algorithm is improved by using the receive diversity technique. Simulation results show that this algorithm significantly improves the correct recognition rate of the received signals has the good anti-fading and anti-noise performance and meets the requirements of the modulation recognition of MQAM signals under the aeronautical channel.
Study on Lost Circulation in an Extended Horizontal Well in Cuba
Authors: Luo Cheng , Cao Xiao Chun , Qin Yi , Li Bei Ren
Published: September 2013

An extended horizontal well was to be drilled in the eastern Cuba. Because lost circulation of drilling fluids and cement slurry could take place in the target sections, the controlling measures were studied. There were several processing measures. And Lost circulation materials (LCM) could be used when the loss of circulation happened. The test and processing methods were also introduced.
Research and Simulation of Ultra Wideband Based on Rake Receiver
Authors: He Xue Wen , Wang Yan Meng
Published: September 2013

The Ultra Wideband signal with multiple multipath component and use the Rake receiver can combine energy of multipath components. Using Rake reception, the performance of three kinds of receiving methods is compared with binary Ultra Wideband signal using the Maximal Ratio Combining (MRC), and got the simulation results.
Hospital Information System: Closed-Loop Application Based on Radio Frequency Identification
Authors: Wang Hong , Wu Yuan Li
Published: September 2013

To prevent medical errors or even accidents, our solution is to design the closed-loop application based on Radio Frequency Identification (RFID) technology in the Hospital Information System (HIS). We focus on the information improvement for doctor's order based on RFID. The whole closed-loop process starts from the initial collection of the patient's information, through confirmation of the unique identification of the patient, and to the finishing of the doctor's order at last. The final information is written back into HIS. Medical staff can collect and deal with the patient's information straightly through the system, thereby guarantee maximal medical information correctness. The system design of the closed-loop process of the doctors order includes new workflow and its wireless system architecture based on RFID in the ward environment.
Fixed Telephone Intelligent Voice Service System on Telecom Platform
Authors: Liu Ying , Xiao Ying , Zhang Qian , Liang Zhu
Published: September 2013

Its based on the voice value-added business booming and combined with the value-added service of mobile and network so that the fixed telephone intelligent voice service system is put forward in the paper. The system is constituted with voice rafting business and fixed telephone business like we chat, which is constructed by voice acquisition, number identification, voice feedback and customer information processing module. The rafting business is devoted to solve the difficulty that the users have communication impediment in different time domain. And the business is used availably for work and amusement through orientation conveying or not. The applied range of we chat is broadened because of the fixed telephone business like we chat. The fixed telephone business like we chat is realized by the store-and-forward way to achieve the communication with real time and different time domain. The birth of the new business model will bring consumers the different experience and feelings. The general control scheme, general structure, software modules, business content and running process are included in the paper of the detailed content, and then make the analysis of the dominance of the IVSS (Intelligent Voice Service System).
Miniaturization and Low-Cost Microstrip Antenna Design for GPS Receiver
Authors: Hao Hong Gang , Wang Shao Wen , Lu Hua Xiao , Ruan Wei
Published: September 2013

As the key components of the receiver in the GPS(Global Positioning System) system, the performance of the antenna has an important impact on the accuracy of navigation and positioning for a GPS receiver. The paper shows a novel microstrip antenna on the basis of the slot loaded method. The simulated results and the experimental test results indicate that the characteristics of impedance and circular polarization, as well as the radiation pattern of the proposed antenna can meet the requirements of the applications of GPS, which provides the theoretical and experimental basis for the practical applications of the proposed antenna.
Study of Forearm Surface EMG Using a Continuous Force Profile Generator
Authors: Fu Jian Ting , Shi Yi Zhi , Ma Lei , Li Yao
Published: September 2013

This project designs a novel musculoskeletal force evaluation system, which could generate continuous varying force, acquire wireless signals and measure surface EMG signals simultaneously. Experiments have been developed to validate the functionality and effectiveness of this design. This system could be used to analyze the relationship between surface EMG signal and forearm musculoskeletal force, which will build the theoretical basis for smoother gesture and force detection in humanmachine interaction control.
Denoising Method for Unknown Image Noise Based on FWT Optimal Order Selection
Authors: Jiang Yuan Yuan , Wang You Ren , Luo Hui
Published: September 2013

The optimal fractional order is got for image denoising by 2-D fractional wavelet transform (FWT). But, the actual application environment is complex, and the input image has already been polluted by unknown noise frequently in the process of capture and transmission. And it's impossible to get the optimal fractional order on the basis of the objective evaluation standard in existence. Therefore, in view of the unknown image noise, a method to get the estimated value of optimal fractional order is put forward. Firstly, new objective evaluation standards for image denoising in fractional wavelet domain are defined, and its optimal value is obtained based on noise estimation. Then the optimal estimated fractional order is got. The experiment results show that, the optimal order of 2-D FWT can be selected reasonably by the proposed method and the unknown image noise can be filtered effectively in the estimated optimal fractional wavelet domain.
System Dynamics Modeling for China's EV Development Strategy
Authors: Wang Yu Ning , Zeng Hui Ming , Tang Bing Qing , Hu Bin Xiang
Published: September 2013

Due to mandatory emission reduction and rising oil prices electric vehicles are about to be introduced in mass markets. This paper presents a system dynamics model of Chinas development strategy of electric vehicle industry. The focus of the paper is to study the influence of four major dynamic factors government policies, technology innovation, market demand and competitive ability. It gives an overall scenario of the development and highlights the major problems faced by Chinese electric vehicles industry, and how SD modeling can be used for the analysis of the industry developing policy. The model has been used to simulate the influence of these dynamic factors for 20 years, and a serious of policy tests and some useful policy suggestions were put forward. The result suggested that government support will still play a key role in a long-term.
Oasis Image that Processed by Some CNN
Authors: Tuerxunaili Niyazi , Cui Jin Lei
Published: September 2013

In this paper, firstly, we introduce the way of Cellular Neural Network (CNN). Secondly, we use different way to process the image by the CNN. Thirdly, we observe these processed images. We can find some regulars about the oasis. We get the size of the oasis. Then, we can find the environment is good or poor. If the size of oasis is small, we must enhance protecting about the environment. Then, we can research a prediction method to some images.
A Transform for Process the Radar Image to Matrix
Authors: Li Guo Dong
Published: September 2013

In this paper, a kind of transform has been given for an image that switches to a matrix. A Radar image is an RGB image. An RGB image is usually represented to three layers: Red, Green, and Blue. Each layer can be changed to a matrix. We give a way to transform the three layers to one matrix. All image information will be remained. According to this way, the hail cloud radar image had been transformed to a matrix. The information of hail will been remain in this matrix.
Traffic Signal Indicator Classification Based on Color-Shape Feature
Authors: Ren Yong
Published: September 2013

Traffic signal lights are generally composed by digital indicator and direction indicator. Its identification and classification is to analysis image content on the base of the semaphores characteristics, to identify the semaphores goals and classify them, including pre-processing, positioning, segmentation and classification. Based on image preprocessing, global threshold processing is used in the HSI color space to find the location of traffic signal lights; then to get each indicator through the projection method dividing; finally to distinguish digital processing and direction indicator by target detection algorithm based on the shape features of traffic signal lights. Simulation experiments show that the algorithm is reliable and executes efficiently with high accuracy.
An Improved Algorithm Based on Optimized PTS in MIMO-OFDM System
Authors: Wang Ya Jing , Li Ya Zhen , Huang Li Qun
Published: September 2013

The fourth generation mobile communication system is a high-speed broadband wireless communication system, it needs MIMO and OFDM technology which have high spectral efficiency and suitable for a multi-path fading channel. Because the MIMO-OFDM system is still an multi-carrier modulation system, the main drawback is the high PAPR value. This paper proposed an improved algorithm based on optimized PTS to reduce PAPR in STBC MIMO-OFDM system. The simulation results show that the improved algorithm can effectively reduce the PAPR value and do not increase the amount of computation in STBC MIMO-OFDM system.
Application BP Neural Network in the Speaker Recognition Based on Chaos Particle Swarm Optimization Algorithm
Authors: Wang Guo Wen , Luo Shi Xin , He Li , Yin Gang
Published: September 2013

According to the question that BP Neural Network has slow velocity of convergence and is apt to fall into the minimum value, chaos thought is adopted in the particle swarm optimization (PSO). For this, chaos particle swarm optimization algorithm, which improve the ability of getting rid of fractional extreme point in the PSO, is presented and applied to the BP network exercise so that the calculation accuracy and velocity of convergence of BP network are increased. The method of training the BP network for speaker recognition, the recognition rate and speed of training have been greatly improved, making the speaker recognition based on BP neural network to get better results.
Study on Application of Data Mining Technology in Syndrome Differentiation of TCM
Authors: Dai Zhi Guo , Han Yang Yang
Published: September 2013

Study on the applications of association rule mining in traditional Chinese medicine (TCM) knowledge and experience is carried out in this paper. The association rules of disease symptoms and syndrome differentiation, syndrome differentiation and prescription, disease symptoms and prescription are mined by analyzing the cases of patients with chronic gastritis, and then the mined association rules are interpreted that provide the beneficial reference for data mining technology in TCM.
Real-Time 3D Hand Gesture Recognition from Depth Image
Authors: Lin Song , Hu Rui Min , Xiao Yu Lian , Gong Li Yu
Published: September 2013

In this paper, we propose a novel real-time 3D hand gesture recognition algorithm based on depth information. We segment out the hand region from depth image and convert it to a point cloud. Then, 3D moment invariant features are computed at the point cloud. Finally, support vector machine (SVM) is employed to classify the shape of hand into different categories. We collect a benchmark dataset using Microsoft Kinect for Xbox and test the propose algorithm on it. Experimental results prove the robustness of our proposed algorithm.
DSP-Based Implementation and Optimization of Auditory Filter-Bank
Authors: Chen Jin Lun
Published: September 2013

The auditory filter-bank is the key component of auditory model, and its implementation involves a lot of computations. The time spent by an auditory filter-bank to finish its work has a significant effect on the real-time implementation of auditory model-based audio signal processing systems. In this paper, we give a brief introduction to the auditory filter-bank at the first, and then discuss its DSP-based implementation and optimization in details.
The Adjustment of Texture Mapping Based on Image-Entropy
Authors: Zhao Xi Qing , Zhang Wen Ying , Sun Peng , Wang Li Jun
Published: September 2013

Mass terrain in four fork tree index structure Xia, draws Shi needs for effective of texture map, viewpoint of moved and texture retrieved Shi scene dynamic update directly effect to displayed efficiency, used macro points block match micro-texture map of method, effective to reduced has data of frequency refresh; introduced image entropy reflect image color distribution of space features, to improve original terrain texture, to out a more meet actual of terrain draws method; experimental indicates that in mass terrain texture map process in the, Increases the level of authenticity and real-time terrain rendering
Multi-Sensor Image Registration by Combination of Relaxation Optimization Matching and Partitioning RANSAC
Authors: Wu Ying Dan , Ming Yang
Published: September 2013

This paper presents a multi-sensor image registration method by combination of relaxation optimization matching and Partitioning RANSAC. Firstly, the global coarse registration is performed to establish the approximate relationship of reference and slave image. Secondly, in each pyramid level, the normalized MI and relaxation optimization technique are adopted to get the matching points, and partitioning RANSAC is used to delete the existing false matches. The coarse-to-fine strategy is integrated to refine the results, and finally the rubber sheeting method is used to realize the image registration. Two datasets have been experimented, and it can be found that satisfactory registration method can be obtained.
Study on Properties and Parameter Analysis of φ382 DTH Bit
Authors: Pan Guang Yong
Published: September 2013

This paper expounds the application field for φ382 DTH bit, the product structure principle, analyzed the impact energy and impact frequency, drill bit products impact on the forces, bit dangerous section of compressive stress and other technical parameters, proves the bit body and alloy material research and development process of the feasibility and reliability of the performance study. For DTH drilling tools manufacturing enterprises at home and abroad in the production of large diameter high pressure drill products can provide certain reference.
Research on Safety Management to Promote Mechanical Safety
Authors: Liu Wen Long , Zhang Hong
Published: September 2013

Mechanical Safety is very important in safety production. Not only China, the machinery safety issues are still not optimistic. Safety becomes more and more important nowadays. So, to ensure the mechanical safety is not ones responsibility but all society. Measures must be taken jointly by the government, social organizations, enterprises and technical institutes to maintain the machinery safe. Government should develop the safety standards, the same as certification for social organizations. For enterprises, they must ensure that mechanical products meet the safety requirements. Strengthen the safety management in production process is the responsible of technical institutes. Together through a series of measures to make the mechanical safety situation has a good development in China.
Analysis of Reasons for Siltation at Some Ore Wharf
Authors: Zhuang Qian , Zheng Qi Ming , Wang Dong
Published: September 2013

In the initial operation stage of some ore wharf, the silting situation appears in the wharf apron; through the on-spot hydrological, geological and topographic survey and combination with a lot of previous data and the project implementation, the research is made into the hydrodynamic sediment conditions in the water area and the changes of topographic erosion and siltation. The analysis shows that the siltation is related to many factors, including: the natural siltation effect, the effect of erosion adjustment period, the effect of sand excavation and dredging, and the effect of wharf construction. Among which, the local excavation in the rear of the wharf under construction has a great effect on the siltation of the wharf apron.
The Effect of Porous Medium Particle Size on Groundwater Recharge Clogging
Authors: Pan Jun , Wang Ming Zhong , Jiang Ming Cen
Published: September 2013

In order to grasp the effect of porous medium particle size on groundwater recharge clogging. Measure the water flux of porous medium with different particle, by indoor soil column experiment simulating the process of groundwater recharge clogging. The results show that porous medium particle size is proportional to the initial water flux and the clogging occurred time, and is negatively correlative to clogging degree. When lay out wells in the water source heat pump works, should give full consideration to the effect of local hydrogeological conditions on groundwater recharge. It provides a scientific reference to prevent groundwater recharge clogging and the choice of recharge wells location.
Study of Energy Optimization Technical Program of Zhao II Oil Transfer Station Gathering and Transportation System
Authors: Lu Meng Mei , Zhu Jiao
Published: September 2013

The block within the jurisdiction of Zhao II oil transfer station in Daqing Oilfield is low permeability area. The wells are in condition of low liquid production, high water cut, low temperature environment and poor geological. So a high energy consumption of oil gathering is caused. In order to save the energy, the energy balance model of Zhao II oil transfer station gathering and transportation system was established. Combining with production data, the energy consumption proportion and the main problems were analyzed. And the corresponding optimization programs were proposed. The results showed that Zhao II oil transfer station was expected to conserve 48.97m3/h natural gas and 47.2kW·h/h electricity after optimization. Energy efficiency of station increased 1.32%.The energy-saving effect was significant.
Method for Calculation of Water Demand by Pollutant Dilution and Purification in River Networks and its Application to the Zhongmu Baisha District River Networks
Authors: Ren Jin Liang , Yu Xue
Published: September 2013

The laws of pollutant dilution, dispersion and purification are discussed for river networks. And then a calculation model for water demand by pollutant dilution is developed, and methods for determination of the total volume of water diversion and flow rate are also given. With the Zhongmu Baisha district river system as an example, the overall plan and its feasibility are studied. With the calculation model for river networks, and by comparison of various water diversion schemes and assessment of the effect of water diversion, a reasonable scheme and the volume of water diversion are determined. The research provides a theoretical basis and technical support for the water quality guarantee of Zhongmu Baisha district river networks.
Temporal and Spatial Distribution Characteristics of Nitrogen and Phosphorus in Soil with Typical Crops Planted on in Headwater Region of Liao He
Authors: Xiong Ying , Lu Wen Long , Guo Ping , Xie Zhong Lei , Guo Wei Wei , Kang Chun Li
Published: September 2013

This paper discusses the temporal and spatial distribution of nitrogen, phosphorus in the soil with typical crops planted on in Headwater Region of Liao He. The purpose is to provide theoretical basis for the prediction of the non-point source pollution and protection of the environment in Headwater Region of Liao He. The results show that the content of the substance which can be absorbed by plants was higher in the surface soil than that in the bottom soil. The nitrate nitrogen content in soil was lower in autumn than that in spring except normal planting surface soil. And the ammonia nitrogen content was also a little lower in autumn than that in spring except normal planting surface soil and blank control land 1. In autumn, the hydrolyzable nitrogen content in the surface soil was decreased slightly and it was nearly unchanged in the bottom soil. The total nitrogen content was higher in autumn. The content of available phosphorus was a little higher or nearly unchanged in autumn than that in spring, the content of total phosphorus changed irregularly.
Experimental Research on the Pollutant Emission Characteristic of In-Use Gasoline Vehicle by ASM
Authors: Wan Xia , Huang Wen Wei , Gao Mou Rong
Published: September 2013

About 17,000 gasoline vehicles were tested by an acceleration simulation mode (ASM) inspection. The pollutant emission data is compared and analyzed in this paper. Result shows that the pass rate of vehicle ASM emission inspection fell from 90% to 63% and vehicle emission deteriorates rapidly with vehicle age when the vehicle age over 6 years. The technics and technology of vehicle engine, the different engine ECU management styles also have great effects on the vehicle emissions.
Study on Activated Sludge and Microbial Change in Membrane Bioreactor
Authors: Wan Xu Dong , Zeng Ke , Cui Yan Ping , Huang Li Jun
Published: September 2013

With the characteristics of long SRT and high sludge concentration in MBR, the dynamic change of microbial community and the settleability of activated sludge have been the primary researches. According to observation of microbial from activated sludge consecutively, the change of the microbial population had a certain regularity: the free-swimming ciliates, the attached ciliates and the rotifera carried on the dominant populations in turn. With proliferation of the filamentous in activated sludge, the activated sludge floc became closely from loosely, resulted the microbial species and quantity in reduce. The total of activated sludge also rose along with the extent of SRT. The study found that there is a relationship of mutual influences and interactions between activated sludge and microorganism.
Analysis on the Water-Consuming of Wet FGD
Authors: Xiong Ying Ying , Xu Wei Gang
Published: September 2013

Based on the wet flue gas desulfurization (FGD) system, we had a analysis on water-consuming. Through the detailed heat and quality analysis of the process, the water-consuming of wet FGD can be calculated scientifically and reasonably. The research has a guiding role in the coal-fired power plant desulfurization.