bluuebunny/crossref_metadata_2025 huggingface dataset:
A Parameterized Method for Assembly Tolerance Analysis Based on Deviation Propagation Theory
Authors: Li Hai , Leng Yun Feng , Zhu Hai Ping , Li Pei Gen
Published: December 2013

The paper proposed a new tolerance analysis method: a unified tolerance and deviation model is adopted to synthesize different kinds of tolerances; an integrated tolerance propagation model is designed to construct the functional relationship between the tolerances and quality requirements. The method is simpler and more widely applicable than the traditional linearization analysis method. A case study is provided to illustrate the proposed method.
Simulation of Smoke Movement in a Loop Corridor under Mechanical Exhaust with Compound Model
Authors: Shi Wei , Gao Fu Sheng
Published: December 2013

The mechanical smoke exhaust is as acknowledged as an effective smoke control manner by making use of some necessary exhaust facilities, also with more stability than natural exhaust. In this paper, the field model FDS (Fire Dynamic Simulator) with a combination of zone model CFAST (Consolidate Fire and Smoke Transport) were used to simulate the mechanical smoke exhaust in a loop corridor of the fire floor in a high-rise hotel, for the propose of evaluate fire safety of mechanical smoke exhaust. The mainly discussion was about the height of layer interface with the ceiling height changed, also with different smoke exhaust volume. The conclusions were obtained that, when two exhaust vents were set symmetrically in the loop corridor, the volume of smoke exhaust per unit area with 60m3/h according to regulations, always could ensure safety of smoke exhaust. The smoke exhausted worse within the corridor when ceiling height reduced. It was recommended that the ceiling lowest height limit should be provides in correlative regulation.
Sound Transmission in Dual-Coupling System of Elastic Plate and Acoustic Cavity Based on Modal Superposition Method
Authors: Li Hong Qiu , Chen Guo Ping
Published: December 2013

This paper presents a study on the dual-coupling characteristics between elastic plate and acoustic cavity. Modal superposition method was employed to analyze sound transmission in the plate-cavity-plate system and cavity-plate-cavity system. Impedance and mobility methods were also adopted which were easy to investigate the characteristics between the structural and acoustic systems. The expression of sound transmission between plate-cavity-plate system and cavity-plate-cavity system were given.
Mechanical Characters Experimental about Reinforced Concrete Profiled Pipe Culvert
Authors: Zhang Jun
Published: December 2013

It is supposed to be constructed a kind of profiled pipe culvert which have a new type of cross, in view of the reinforced concrete circular culvert’s various diseases that occurred in service of it. In order to know about the mechanical characters of structure, and test the carrying capacity of the profiled pipe culvert, the load test can be used to have a research on the stress, deformation characteristics, and crack distribution and development on the profiled pipe culvert.
Effects of Custom-Made and Thread Dental Implant Systems on the Stress Distribution in Alveolar Bone: A 3-Dimensional Finite Element Analysis
Authors: Zhang Xiao , Xie Zhan Gong , Feng Wei , Chen Xian Shuai , Chen Jian Yu
Published: December 2013

Aiming to investigate the effects of custom-made and thread dental implant systems on the stress distribution in alveolar bone using linear analysis of the finite element method (FEM). Two types of systems: the custom-made implant and the thread dental implant system, were studied using a three-dimensional finite element analysis (3D FEA). Comparing the parts of all systems for loading in different directions, the stress and deformation distribution in custom-made implant and alveolar bone are better than that in thread dental implant system. The analysis data definitely demonstrated the difference in stress and deformation distribution of components in different dental implant systems. Results show the custom-made implants are provided with more advantages and can be used in future experiment and clinical test.
Structural Intensity Analysis of Bolt Joints in Vibration Environment
Authors: Zhang Yong Juan , Zeng Guo Ying , Zhao Deng Feng
Published: December 2013

A nonlinear model of bolt joints structure in vibration environment is built and Structure Intensity(SI) of it is calculated by FEM as an approach for the state identification of bolts joints structure in vibration environment. The plots of the structure intensity vector under different preforce were obtained and showed the SI changes of bolt joints structure with different preforces.and showed the energy distribution and transmission are different preforces
The Loading Ability Analysis of Spiral Spline
Authors: Yang Jun , Li Hua , Li Qing Tao , Yao Jin
Published: December 2013

With the detailed force analysis of spiral spline transmission, the relationship of each force was derived. On the basis of this, referred to the designing and checking criterion of the straight-tooth spline transmission and spiral transmission, the calculation methods of the surface extrusion stress (or pressure) of the spiral spline teeth side, the shear stress and the max-flexural stress of the spiral spline teeth root, and the equivalent stress of the screw bolt were derived, and the checking criterions for them were put forward. An example, the surface extrusion stress through the calculation methods compared with that through ANSYSWorkbench simulation, verifies the calculation methods of the surface extrusion stress (or pressure) of the spiral spline teeth side.
Computer-Aided System Design for Exercise Load Evaluation
Authors: Liang Jian Xun , Xiao Bing
Published: December 2013

Problems and difficulties concerning the collection,processing,and analysis of the data in sport training were discussed in this paper.Based on the physical efficiency event groups,a computer-aided sport training system was designed for exercise load evaluation,in which the objectives,functions and data structure of the design were analysed to meet the requirements of the coaches.A typical example was finally adopted to demonstrate its application.
Study on Bioinformatics with Dynamic Characteristics Change of the Hippocampal Neuron Model Caused by the Alzheimer Disease
Authors: Peng Yue Ping , Wang Jue , Zheng Chong Xun
Published: December 2013

In the paper, based on the electrophysiological experimental dada, the neuron model under the pathology condition of Alzheimer Disease (AD) is built. The neuron models dynamic variation characteristics before and after the effect of AD are comparatively studied. Under the currents stimulation, compared with the normal neuron model, the AD neuron models dynamic characteristics have been obviously changed. Its changing range of the membranes interspike intervals (ISIs) obviously narrows, and the discharge patterns change rather single. In addition, its discharge threshold is much higher than the normal neuron models. So AD causes the neuron models excitability to depress markedly. The research reveals the neuron models dynamic characteristics changing under the effect of AD, which shows bioinformatics change of the neuron caused by AD. The research provides some theoretic basis for AD research by the neurodynamics theory.
Design Optimization of Low Power and Low Frequency Vibration Based MEMS Energy Harvester
Authors: Aris Hasnizah , Fitrio David , Singh Jack
Published: December 2013

The development and utilization of different structural materials, optimization of the cantilever geometry and power harvesting circuit are the most commonly methods used to increase the power density of MEMS energy harvester. This paper discusses the cantilever geometry optimization process of low power and low frequency of bimorph MEMS energy harvester. Three piezoelectric materials, ZnO, AlN and PZT are deposited on top and bottom of the cantilever Si substrate. This study focuses on the optimization of the cantilevers length, width, substrate thickness and PZe thickness in order to achieve lower than 600 Hz of resonant frequency. The harvested power for this work is in the range of 0.02 ~ 194.49 nW.
Research on Self-Calibration of Circular Artifacts
Authors: Liu Xin Mei , Chen Yun
Published: December 2013

In order to solve the problem of poor performance of the traditional calibration algorithm , the paper proposed a mathematical model under the constraints of nonrotating and nonscale error ,which solved the defects of inconvenience and expensiveness. Moreover, the mathematical model was obtained through the correlation equation based on the least squares method. Meanwhile , the paper discussed the impact of random noise on the model ,and it was simulated by Matlab. The result of the simulation shows that the model can separate the system error of circular artifacts accurately whether the existence of random noise or not. The result of this paper on expanding the application areas of selfcalibration is of great significance.
An Accurate Physics-Based Method for Calculating DC Inductance of a New Shape Inductor
Authors: Wang Bao Cun , Yu Guo Yi , Zheng Zhao Xia , Li Zhang , Lei Jian Ming , Zou Zhi Ge Zou , Liu Shi Jun , Zou Xue Cheng
Published: December 2013

A new Low interference inductor is presented for wireless transmission in 3D Package. An accurate physics-based method is employed to calculate DC inductance of the new shape on-chip inductors. All inductor size parameters are considered in the method including metal thickness and inter-layer space. Due to its physics-based nature, the proposed method is scalable. The results calculated by the proposed modeling show the new inductor is of lower interference than the common one. The new inductor can transfer more efficiently than the common one.
The Concept of Innovation for Sustainable Development in the Construction Business and Education
Authors: Borkovskaya Victoria G.
Published: December 2013

For two decades, the development of the concept of sustainable development has been made extremely limited progress in view of what is happening further aggravation of poverty and environmental degradation. The global community requires an innovative approach of building business and education in general. The building complex has a special role in the functioning of the economy, as it creates the material basis of all its branches , determines the character of the country for a long period and forms the living environment of the population. Consider what innovations will be needed in the coming period.
The Model of Multi-Arrangement Fuzzy Evaluation for Operational Ability in Enterprise
Authors: Deng Yi Xuan , Deng An Peng , Chai Yun Hai
Published: December 2013

According to the feature of enterprise operational ability index system, the paper uses fuzzy method to evaluate enterprise integrate preponderance, sets up the model of multi-arrangement fuzzy evaluation and gives the specific evaluating method about weight coefficient and approach about model.
Influence of He Buffer Gas Pressure on Cs Atomic Polarizability
Authors: Liu Qiang , Sun Yu Dan , Zhuo Yan Nan , Wang Jia Xing , Fu Tian Shu
Published: December 2013

All optical cesium (Cs) atomic magnetometer with high sensitivity is an important technique to detect weak magnetic field. The Cs vapor cell is filled with He buffer gas to reduce spin relaxation rate. However the pressure of He also influences the Cs atomic polarizability due to pressure broadening effect. In this work, the principle of all optical Cs atomic magnetometer is analyzed. The rate equation is used to calculate Cs atomic polarizability as the pressure of He is about 100Torr and pure Cs vapor cell. The calculation shows that higher pressure of He buffer gas can decrease Cs atomic polarizability without considering spin-exchange collisions, as the pump beam frequency is locked to Cs D1 transition F=3F=4.
The Risk Assessment of High-Tech Project Based on Comprehensive Evaluation of Fuzzy and Gray Model
Authors: Ding Xiao Bin
Published: December 2013

High-tech projects have high risks involving wide range of links, high expense of investment, long period of development and production cycle, complicated operation system, etc. When evaluating the project's risk, a separate gray method or fuzzy theory model is not comprehensive, it should combine the gray method with the fuzzy evaluation model. From the fuzzy evaluation and gray evaluation method the gray clustering statistic could be obtained by use of grey cluster theory. It is necessary to construct fuzzy membership matrix of risk and establish a fuzzy and gray comprehensive evaluation method, and adequately adopt expert's evaluation information of the fuzziness and grayness. Finally, using concrete empirical analysis in aviation armament project risk assessment, the feasibility and the correctness of the model are verified.
Frequency Analysis of Bioimpedance Variations in Human Bladder during Changes of Urine Volume's States
Authors: Wang Qian , Zhou Guang Min , Liu Guan Zheng
Published: December 2013

To verify the hypothesis that the variations of bioimpedance can reflect the status of bladder volume during natural bladder filling. We chose 10 healthy, male volunteers by recording different bladder filling stages using bioimpedance and ECG measurement. The signal measurement acquisition device was design by Sun Yat-sen University. Bioimpedance measurement was employed four silver-silver chloride compound electrodes, two of which are stimulating electrodes, and the others are measuring electrodes. Each electrode is attached to the lower abdomen, the mapping position of urinary bladder. Using Fourier analysis, the bioimpedance signals in different stages were analyzed. During natural bladder filling, subjects were asked to report real sensations. Sensations intensity increased with urine volume increase. Bioimpence power spectrum density (PSD) was related with sensation intensity. During natural bladder filling, PSD revealed two parameters with 0.04-0.15 Hz (low frequency, LF), and 0.15-0.4 Hz (high frequency, HF), which were observed under different bladder sensations. In natural bladder filling, the HF spectrum power is increased, in parallel with an inconspicuous change in LF spectrum. With the ECG signal analysis, the reaults revealed spectrum powers were explained by the autonomic nervous regulation. The novel method can assess the states of bladder volume during natural bladder filling.
The Application of Digital Photography Techniques in Structure Deformation Measurement
Authors: Yu Cheng Xin , Xia Xiang , Qin Feng Hua , Xiao Peng
Published: December 2013

Introduced the use of 3D time baseline parallax method of steel structure,calculation of deformation measurement data processing methods, and the experimental results are given. This method considered the resolution, focal length, and the impact of external environmental conditions. Has made the small observation error, high precision results.Digital cameras used for digital photographic survey, avoid the complex process of measuring cameras printing. The photographic measurements can be performed simultaneously inside and outside the industry.So far, more suitable for digital camera solver methods are direct linear transformation and time baseline parallax method. Among them, 3D time baseline parallax method is mainly used for measuring spatial displacement of objects.
Distributed Monitoring and Control System for Energy Saving Based on RPC
Authors: Qiao Xin Xiao , Jia Rui Xiang
Published: December 2013

This paper describes a RPC-based distributed energy-saving monitoring system under network environment. It solves the contradiction between energy saving and security lighting. With the help of intelligent energy-saving street-lamp controller network, real-time statistics and analysis are implemented for each street-lamp node in the surrounding street scene environment. According to the analysis results, demand-controlled lights brightness level is realized and the intelligent control of lights is also realized. So the street lights achieve demand lighting, which can facilitate the life and save energy.
Parameter Estimation of Photoacoustic Signal for Glucose Solutions Using Laplace Wavelet Correlation Filtering and Least Square Estimation
Authors: Zhou Qian , Zhao Si Wei , Wei Jia Si , Yan Hao , Zhao Hui
Published: December 2013

In photoacoustic (PA) technology, piezoelectrical transducer (PZT) is the most frequently used detector for the PA signal generated by weakly absorbing liquids. Although PZT has high sensitivity, its output signals are distorted and become exponentially damped sinusoidal signal [, which is a barrier to extract correct information of glucose. Therefore it is necessary to find a proper way to extract glucose information. In this paper, a method of parameter estimation based on Laplace wavelet correlation filtering and Least Square Estimation is proposed to extract the information of PA signals, which includes signal decomposition, fitting and glucose parameter extraction. The Laplace wavelet correlation filtering is introduced to decompose piezoelectrical signals into impulse responses of single mode subsystems [2], followed by a Least Square Estimator to fit PA signal and estimate parameters of the exponentially damped sinusoidal model [3]. Good agreement between the fitting model and the PA signal is obtained. Experiments are carried out on finding meaningful parameters indicating glucose among estimated parameters of the exponentially damped sinusoidal model.
Pseudo Cohen Time-Frequency Distributions in Infinite Variance Noise Environment
Authors: Wang Hai Bin , Long Jun Bo , Zha Dai Feng
Published: December 2013

stable distribution has been suggested as a more appropriate model in impulsive noise environment.The performance of conventional time-frequency distributions (TFDs) degenerate in stable distribution noise environment. Hence, three improved methods are proposed based on Fractional Low Order statistics, Fractional Low Order Wigner-Ville Distribution (FLO-WVD), Fractional Low Order Statistic pseudo Wigner-Ville Distribution (FLO-PWVD), Fractional Low Order Statistic Cohen class distribution (FLO-Cohen). In order for real-time, on-line operation and fairly long signals processing, a new smoothed pseudo Fractional Low Order Cohen class distribution (PFLO-Cohen) is proposed.Simulations show that the methods demonstrate the advantages in this paper, are robust.
Noise Analysis and Filtering for Laser Active Imaging System
Authors: Sun Tao
Published: December 2013

In order to deal with the contradiction between suppressing speckle noise and reserving details in laser active imaging recognition system, a denoising method based on contour curvature is proposed. Due to the contour curvature, the pixels in the image are divided into different classes, which contain different amount of information. The filter parameters are different for each class. Firstly, the origin image is smoothed using wavelet soft thresholding, then the contours are extracted by Morphological edge detection operator. Due to the difference of contour curvature, the pixels are labeled with point of strong signal, point of weak signal or point of no signal. Pixels with different labels are filtered by Lee filter of different step width. Experiment result indicates that compared with classical Lee filter, the proposed method performs better in filtering and keeping edge information.
Membership Calculation Based on Dimension Hierarchical Division
Authors: Zhou Ping , Wang Jin Lei , Chen Xian Kai , Zhang Guan Jun
Published: December 2013

Since dataset usually contain noises, it is very helpful to find out and remove the noise in a preprocessing step. Fuzzy membership can measure a samples weight. The weight should be smaller for noise sample but bigger for important sample. Therefore, appropriate sample memberships are vital. The article proposed a novel approach, Membership Calculate based on Hierarchical Division (MCHD), to calculate the membership of training samples. MCHD uses the conception of dimension similarity, which develop a bottom-up clustering technique to calculate the sample membership iteratively. The experiment indicates that MCHD can effectively detect noise and removes them from the dataset. Fuzzy support vector machine based on MCHD outperforms most of approaches published recently and hold the better generalization ability to handle the noise.
About Timekeeping Activities at NTSC
Authors: Dong Shao Wu
Published: December 2013

The National Time Service Center, Chinese Academy of Sciences (CAS) has taken the charge of the national standard time and frequency service since early 1970s. The China National Standard Time, UTC(NTSC), is generated and kept at the Timekeeping Laboratory of NTSC. The research activities and the facilities of the lab are described in this paper. The accuracy of UTC-UTC(NTSC) and stability of independent local time scale TAI-TA(NTSC) realized are shown in this paper.
The Trees Skeleton Extraction Based on Point Cloud Contraction
Authors: He Gui Zhen
Published: December 2013

To achieve the trees three dimensional simulation, the most critical step is to extract the trees skeleton. This paper focuses on the point cloud contraction-based skeletal extraction algorithm, uses neighbors to build a transformation matrix, extract a discrete point set approximated to the real skeleton by Laplacian contraction, and constructs a 1D curve skeleton with the help of a weighted undirected graph and edge collapse algorithm. 1D curve form is more easy to operate, guide the reconstruction of three-dimensional model, solve the problem of incomplete data in the process of modeling .
Detection of early Defects of Apple Based on the Image Fusion
Authors: Zhou Jian Min , Yin Hong Yan
Published: December 2013

A new detecting method for apples’ early defects which was based on the image fusion of infrared and visible images was introduced in order to distinguish and separate the fruits with mechanical damage. Using apple as the research object, the basic detecting process was expounded, and the process of image registration was introduced emphatically. An improved algorithm of image fusion, which was based on wavelet transform, was proposed. Then the experimental result was provided as well as the objective evaluation for it.
Research on Automatic Docking Location Method Based on Machine Vision
Authors: Yu Gui Jun , Lv De Cai
Published: December 2013

For many applications requiring automatic positioning docking, we often use machine vision to guide automatic docking location. The key technology of automatic positioning system based on machine vision is edge detection technology of docking interface; the algorithm is the key factor to decide the success or failure of the system. In this paper, the elliptic edge detection as an example, introduces the application and experiment using Sobel edge detection algorithm in positioning aspect. The experimental results show that the method has high precision for oval edge detection, can assist machine to carry out automatic docking location, and has shorter time of image processing, it is beneficial to improve the processing speed of docking.
Design of XML-Based Transducer Electronic Data Sheet Specified in IEEE1451.2
Authors: Han Hui Lian
Published: December 2013

Aiming at solving the incompatibility and interoperability among multiplexed sensor elements in complicated system, the paper designed a XML-based TEDS for networked sensors, The paper introduced XML technology, analyzed the TEDS defined in IEEE1451.2. In virtue of XML, integrated IEEE 1451.2 with XML technology, the designed TEDS parsed a wide variety of transducer’s information; the XML-based TEDS applied in heterogeneous system proved to a viable means of achieving interoperability.
Parallel Covariance Intersection Fusion Optimal Kalman Filter
Authors: Zhang Peng , Qi Wen Juan , Deng Zi Li
Published: December 2013

For multisensor network systems with unknown cross-covariances, a novel multi-level parallel covariance intersection (PCI) fusion Kalman filter is presented in this paper, which is realized by the multi-level parallel two-sensor covariance intersection (CI) fusers, so it only requires to solve the optimization problems of several one-dimensional nonlinear cost functions in parallel with loss computation burden. It can significantly reduce the computation time and increase data processing rate when the number of sensors is very large. It is proved that the PCI fuser is consistent, and its accuracy is higher than that of each local filter and is lower than that of the optimal Kalman fuser weighted by matrices. The geometric interpretation of accuracy relations based on the covariance ellipses is given. A simulation example for tracking systems verifies the accuracy relations.
Application of Wireless Sensor Network in the Monitoring System for Valuable Chinese Herbal Medicine Growth
Authors: Zhu Ying Li , Xie Ling Qin
Published: December 2013

Chinese herbal medicine with no side effects can help people resist disease and keep healthy, due to predatory excavation, and heavy deforestation, the destruction ecological environment, lots of the precious Chinese herbal medicines are on the edge of exhaustion. In order to protect Chinese herbal medicines and do artificial cultivation, the paper presents a real-time monitoring system based wireless sensor network. The system gives the hardware design of wireless sensor node and software implementations. The nodes are mainly responsible for collecting and transporting the environment parameters of the Chinese herbal medicine including temperature, humidity and light intensity and so on, and send the data through the GPRS module to the remote monitoring center. The system can make the artificial cultivation of the medicines more modern, scientific and objective.
Covariance Intersection Fusion Kalman Estimator for Multi-Sensor System with Measurements Delays
Authors: Zhang Peng , Qi Wen Juan , Deng Zi Li
Published: December 2013

To handle the state estimation fusion problem between local estimation errors for the system with unknown cross-covariances and to avoid a large computation complexity of cross-covariances, for a multi-sensor linear discrete time-invariant stochastic system with time-delayed measurements, by the measurement transformation method, an equivalent system without measurement delays is obtained, and then using the covariance intersection (CI) fusion method, the covariance intersection fusion steady-state Kalman estimator is presented. It is proved that its accuracy is higher than that of each local estimator, and is lower than that of optimal Kalman fuser weighted by matrices with known cross-covariances. A Monte-Carlo simulation example shows the above accuracy relations, hence it has good performances.
Design and Calculation of a Cable Type of Displacement Sensor
Authors: Han Hui Xian , Guo Xiong Hua
Published: December 2013

The article firstly introduced the work principle of a cable type of displacement sensor. Then it analyzed that design, calculation and selection of the scroll spring and the rope which was used for the sensor designed. Experimental verification shows: with high measurement precision and good wear resistance, the designed sensor has a good value of research and application. The cable displacement sensor designed can be used in engineering machinery, automatic control system length measurement and position measurement.
Hierarchical Combination Reliability Modeling Method for Fault Tolerant Sensor System
Authors: Yuan Liao Yuan , Zhang Wei Guo , Wang Xiao Guang
Published: December 2013

According to the architecture feature of the fault tolerant sensor system, a hierarchical combination reliability modeling method was proposed based on the dynamic fault tree analysis and the Markov process. Temporal operators were applied to represent the sequential logic, and the analytic formula for the failure probability of the top event was derived. The FDI (failure detection and isolation) behavior was modeled by the Markov process. The resultant model was compared to the PFCM (perfect fault coverage model). The impact of the parameters on the system reliability was evaluated. The simulation results demonstrate the modeling method is feasible, efficient and more accurate.
A 2nd Order Delta-Sigma ADC for Pressure Sensor Interface
Authors: Lee Jong Do , Shin Jae Hyeon , Park Young Min , Kwak Yong Sik , Ahn Gil Cho
Published: December 2013

A second order delta-sigma analog-to-digital converter (ADC) including a bandgap reference, a bias circuit for sensor, and a digital filter for the interface of piezoresistive pressure sensor is presented. The proposed sensor interface circuit is designed to target a pressure range from 0 to 100 psi. The prototype sensor interface circuit is implemented in a 0.35 μm CMOS process. The single-loop, 1-bit, second-order delta-sigma ADC operates at OSR of 256 achieves 80.5 dB dynamic range (DR), 79.6 dB peak signal-to-noise ratio (SNR), and 74.4 dB peak signal-to-noise and distortion ratio (SNDR) over a signal bandwidth of 7.8 kHz with 3.3V supply while consuming 0.33mW including on-chip reference and bias current for sensor. (in Performance Summary: 0.95mW)
Control of Beam Halo-Chaos with Sinc Function in a Uniform-Focusing Channel
Authors: Hao Jian Hong , Duan Ru , Wang Shi Chao
Published: December 2013

Based on the nonlinear control strategy of beam halo - chaos, this paper studies the sinc function control method of beam halo - chaos in uniform focusing magnetic channel. And we use Poincare section technology to simulate the beam envelope oscillations and single-particle trajectories. The results show that the use of this method can effectively eliminate beam halo and its regeneration, so that we can achieve effective control on beam halo - chaos.
On-Line Monitoring Method of Drive Motor Operational for On-Load Tap Changers
Authors: Liu Tao , Zhao Tong , Zou Liang , Zhang Li , Zhu Feng
Published: December 2013

Motor-driven on-load tap changers (OLTC) operational within power transformers are extensively used for voltage regulation in power systems, whose principal malfunctions or failures are of mechanical type. Hence, monitoring of the mechanical characteristics of OLTC is of utmost significance. Based on a rotating angular transducer as well as digital signal processing techniques, an on-line monitoring methodology is established to measure, analyze and evaluate the dynamic or transient changes of the rotating angle of the drive motor operational in an OLTC, which can effectively indicate the underlying deficiency or even potential fault of the mechanical drive system connected to the motor. Computer simulations and experiments are carried out respectively, both showing the proposed on-line monitoring scheme is feasible and applicable.
Robust Η∞ Controller Design for Networked Control Systems with Exponential Convergence
Authors: Chen Wen Ying
Published: December 2013

The output feedback exponential robust control for networked control systems with stochastic network-induced delay and packet dropout is studied. Firstly, a state observer is designed for estimating the state values and compensating data dropouts. Then the closed system is modeled as asynchronous dynamical system constrained by configuration event rate. By using Lyapunov principle, sufficient and necessary conditions for robust stability and exponential stability of the closed loop system is obtained and the output feedback controller design method is presented. Simulation example for the design is done, comparing with the other relative methods, the results shows the validity of the method.
Study on the Stepping Identification Arithmetic for Broadband EMP Test System
Authors: An Ting , Jiang Xue Hua
Published: December 2013

In order to overcome the limitation of common methods in modeling test system of broadband electromagnetic pulse (EMP), the paper provided a stepping identification arithmetic to solve the problem of building model in whole frequency range. It obtained low-frequency model and high-frequency model respectively in low-frequency domain and high-frequency domain by identification using import signal and output signal measured by test, it obtained the identification model of the test system by connecting the low-frequency model and high-frequency model, the model was simplified by offsetting adjacent poles and zeros. The results of simulation and test show that the papers method can reflect the dynamic characteristic of the system in whole frequency range, and it is feasible in practical application.
Optimal Asymmetric S-Shape Acceleration/Deceleration for Multi-Axial Motion Systems
Authors: Chou Chang-Yan , Chen Shyh-Leh
Published: December 2013

In this study, an optimization algorithm is proposed for asymmetric s-shape acceleration/deceleration to achieve better contour accuracy for biaxial systems. The optimization is based on the method of genetic algorithm incorporated with the constraints made by the motion system. Numerical simulations of an XY table driven by linear motors following a simple cornering path verify the effectiveness of the proposed algorithm.
Automatic Feeding System Design of Mill Based on PLC
Authors: Zha Chang Li , Zhu Fang
Published: December 2013

The feeding system is an important part of the mill, which is also the main factor that influenced flour efficiency and quality of mill. Designed a kind of automatic feeding system of mill based upon FX2N-series PLC as the core controller, vector universal inverter of INVT to drive , Real-time detection of material position of ultrasonic technology and HT7000-series HMI of Hollysys to Man-machine interface, and better solution to the problem of real-time and accuracy of the feeding quantity. The practical operation shows that the system has the characteristics of high precision, good reliability, easy operation etc.
Research on Passenger Path Search Method Based on the Service Network of Urban Rail Transit
Authors: Li Zi Qing , Song Rui , Li Zhi Jie
Published: December 2013

This study focuses on the major factors influencing the passenger flow assignment in the service network of Urban Rail Transit (URT). A passenger path search method was modeled. It also took full consideration of travelers’ route choice behavior in the service network of URT. Then the figure of service network was built, and assignment indicators of arc segments were set up and quantized. Finally, the traditional K-shortest paths algorithm had been improved based on the case study of calculating and analyzing line A. The results confirm passengers’ traveling behavior can be reflected better by service network.
Representation of Ontology Based Model within the Visual Stock Information System
Authors: Song Hua Zhu , Khamis Khamis Abdul Latif , Liu Yong Jian , Zhong Luo
Published: December 2013

This paper tries to figure out the designing requirement of the ontology model based on visual stock information system; it demonstrates the prototype architecture of Ontology domain and ontology languages such as RDF/RDFs and OWL. These ontology languages were then used to identify the stock domain, define the semantic classes, relations, instances of relations and structure the stock vocabulary data into a meaningful domain of information. The proposed ontology model architecture will be able to observe the vocabularies of stock data by categorizing the Domain of classes and build Ontology solutions based on stocks transaction and historical data for the selected companies
Development of a New Type 4D Dynamic Seat Platform Control System Based on PLC
Authors: Chen Qing Kui , Chen Yu Long
Published: December 2013

This article has introduced the development method of a kind of 4d cinema dynamic seat control system based on PLC, expounds the system's hardware structure , working principle, function characteristics, etc. The system's power is provided by hydraulic pump, hardware adopts closed loop feedback control system constituted by omron PLC, A/D module, D/A module, linear displacement sensor and electromagnetic proportional directional valve. The system has good stability, high cost performance, miniaturization, intelligent, etc.
Design of Embedded Romote Smart Home Control System
Authors: Zhang Peng Ju , Guo Gai Zhi , Yu Zong Zuo
Published: December 2013

Along with the wide application of single chip computer and ARM technique as well as the development of communication technology, GPRS general grouping wireless service is attached with more importance by people in the current romote smart home system. The romote smart home system design based on TC35i Module and S3C2410X was elaborated, GPRS technology was used to realize remote control [1,2] , RS485 bus technique was used to net the home system, and embedded system was used to establish the developing platform of Home Intelligent controller which can realize intelligent management and control of home applications. Partial hardware electric diagram and software flowchart were provided. Field using indicates that this system is economical and flexible.
The Research of the Component-Based Satellite Network Protocols
Authors: She Chun Dong
Published: December 2013

The traditional hierarchical network architecture has the defect of redundancy and no interaction between the layers. These defects have bad impact on QoS and network security. Hierarchical network protocols is difficult to be used to satellite network. Component-based network architecture is proposed for eliminating of hierarchical network design flaws. Network protocols will be divided according to the function for forming of low coupling functional components. It provides high quality services to the application using combined components.
Reliability Analysis of Turbo Code for High-Speed Underwater Acoustic Communication Based on OFDM
Authors: Zhou Lin , Liu Lan Jun , Chi Shu Kai
Published: December 2013

With the rapid development of OFDM (Orthogonal Frequency Division Multiplexing) technology and its own advantages, this technology has been studied actively in underwater acoustic communication recently to improve the data transfer rate and reliability. This paper introduces the key technology of high speed OFDM underwater acoustic communication, analyzes the advantages and disadvantages, design a high-speed underwater acoustic OFDM communication coding scheme based on TURBO code, and proceeding the simulation and analysis for the OFDM system. Finally, the reliability of TURBO code in high speed underwater acoustic OFDM communication is analyzed.
An Energy Efficient Power Control Scheme Based on Game Theory for OFDMA Femtocell Networks
Authors: Wang Long , Zheng Xue Qiang , Song Fei , Chen Juan
Published: December 2013

Femtocell is one of the promising solutions that can improve the energy efficiency of cellular network. However, densely and randomly deployed femtocells may experience server inter-femtocell interference due to rough-and-tumble spectrum reuse with unconstrained power. In this paper, the downlink power control problem is investigated to achieve an energy efficient power allocation scheme. The problem is formulated as a non-cooperative game and distributed power control algorithm is proposed. Numerical results suggest that a good energy efficiency improvement is acquired and the algorithm converge within a few iteration times.
A Design of TS Distribution Synchronization Method for DTMB SFN System
Authors: Bai He , Yang Wei , Cui Jing Fei , Zhang Guo Ting , Li Ting Ting
Published: December 2013

A single frequency network (SFN) based on the DTMB (Digital Television Terrestrial Broadcasting System) terrestrial digital television (DTV) system normally causes interference among signals from multiple transmitters in the network. These transmitters should broadcast the same program at the same frequency simultaneously in the service area. To meet the SFN network construction requirements in complex transport situation, TS distribution networks synchronization is one of the most important foundations. A design was proposed to insert into each MPEG-TS (SIP) packet with one absolute timestamp in the SFN adapter, which was proved to be valuable insuring the synchronization of the SFN TS distribution through field-test in Ningxia DTMB network.
Research the QOS of Ad HOC Network MAC Layer Based on Inpoint Method of Sumt
Authors: Tang Yong
Published: December 2013

One of the choke point of AD HOC network is that the system hasnt resolved the problem of QOS in the MAC layer, the MAC layer QOS of AD HOC network is divided into two levels, one is flow level, and the other is node level. In order to solve QOS problem, this paper proposed a new algorithm IMSMAC, the algorithm use penalty function to optimize the value of different level of service in flow level, and use different priority backoff index to different node in node level. Analysis the throughput and delay of IMSMAC and DCF in NS2, the result showed that the high priority service have a certain degree of improvement in throughput and delay in IMSMAC algorithm.
Research of the DNS Server Deployment in Multi-Export Network
Authors: Chen Hong Ming , Zhang Hui , Shen Da Feng
Published: December 2013

Most of college campus network to access the CERNET and CHINANET and CNC, respectively, more than export way access to the Internet. How to effectively use more export resources, improve the network speed and reliability aspects worthy of in-depth study, etc. In this paper, a model of campus network, combined with DNS service program of the new features and rational deployment of how many export server in the network domain name, put forward a reasonable solution.
Optimization of Neural Tree Based on an Improved Quantum Particle Swarm Optimization
Authors: Teng Hao , Liu Shu Hui , Chen Yue Hui
Published: December 2013

In the model of flexible neural tree (FNT), parameters are usually optimized by particle swarm optimization algorithm (PSO). Because PSO has many shortcomings such as being easily trapped in local optimal solution and so on, an improved algorithm based on quantum-behaved particle swarm optimization (QPSO) is presented. It is combined with the factor of speed, gather and disturbance, so as to be used to optimize the parameters of FNT. This paper applies the improved quantum particle swarm optimization algorithm to the neural tree, and compares it with the standard particle swarm algorithm in the optimization of FNT. The result shows that the proposed algorithm is with a better expression, thus improves the performance of the FNT.
Research on Clustering Analysis Based on SOM
Authors: Liu Hai Xue , Yang Rui Jun , Li Wen Ju , Yu Wan Jun , Lu Wei
Published: December 2013

In this paper, we present an improved text clustering algorithm. It not only maintains the self-organizing features of SOM network, but also makes up the disadvantages of the bad clustering effect caused by the inadequate selection of K-means algorithm. Firstly, data is preprocessed to form vector space model for subsequent process. Then, we analyze the features of original clustering algorithm and SOM algorithm, and plan an improved SOM clustering algorithm to overcome low stability and poor quality of original algorithm. The experimental results indicate that the improved algorithm has a higher accuracy and has a better stability, compared with the original algorithm.
Based on Distance Correlation of Shipment Inspection Data Multiple Factor Analysis Algorithm Research
Authors: Niu Lin , Huang Jin Xin , Zhan Jie , Cui Jin Tao
Published: December 2013

To analyze the main causes of electric power equipments failure, this paper based on distance correlation definition, proposed a method about correlation identification between the multi-factor and equipments failure. Firstly, this paper sets the related factors influencing the equipments failure as numerical value, based on distance correlation definition, calculate the correlation between each factors and equipments failure, so as to determine the power of the main causes of equipments failure. At last, through 220 kV transformer fault case validates the effectiveness of the proposed method.
Space Structure System Consisting 3D Facade
Authors: Kawamura Yuri , Hara Takashi
Published: December 2013

In recent years, temporary housing built in a stricken area has been built by steel construction. But temporary housing could not be built unless an engineer went to a stricken area and the building could not carry a short-time loading like an earthquake or wind loadings. This research aims to develop the permanent box unit construction which is carried and assembled a part by victims. Analysis model used the vinylon fiber reinforced concrete in order to make a concrete ductile without using a reinforced rod. The linear model was analyzed with FEM software. The analysis was carried out and the validity of a temporary housing was confirmed.
Co-Authorship Networks in Asian Architecture Research Domains
Authors: Shin Ye Kyeong , Kim Jun Beum
Published: December 2013

In this study, by using network analysis method, the change of chronological main subject, co-authorship network characteristics (e.g., sets of key players, closeness degree centrality, closeness centrality etc.) were evaluated in Asian architecture research domains. The total 1,772 authors information (co-authorship, country, year and keywords) from 668 papers from the Journal of Asian Architecture and Building Engineering (JAABE) (from volume 1 No.1, issued in 2002 to volume 11 no.2 in 2012) were collected and evaluated. As a result, the research communities are conducting their researches very separately. That means the collaboration between authors in this domain is not well conducted. Also, Weijun Gao (22 papers), Toshio Ojima (21 papers), Shuji Funo (15 papers) and Junzo Munemoto (15 papers) are the most published authors. Total 29 countries are contributing for JAABE. The ranking of nationality is led by Japan (53%) followed by Korea (24%) and China (9%).
Study on Bus Stops of Satellite Cities in China - A Case Study in Yanjiao
Authors: Wang Lin , Li Chao Yang
Published: December 2013

Unreasonable settings of bus stops widely exist in Chinas satellite cities, which restrict the traffic capacity and hold up the public traffic efficiency. This paper takes Yanjiao as an example to summarize the common problems existed in setting up bus stops and present improving proposals through the analysis of the current situation.
A Study on the Availability of Taipei Social Rented Housing Policy - Examining the Taipei Social Rented Housing Policy from the Public Housing Policy in Taiwan
Authors: Chou Ying Mei , Liao Chu Tsen
Published: December 2013

The legislation of public housing policy in Taiwan was in the 1949 after the Nationalist Government moved to Taiwan from China. Since 1949, Taiwan faced several difficult situations, for example the oil crisis period and the real estate economy took off. In 2000, government decided to stop this policy, and didn't offer any appropriate social housing policy. However, Taipei is the most densely-populated city in Taiwan. People could not buy their own private house for the high price. Its showed us a great deal of the need of housing rental. With this matter, Taipei City Government began to offer the public housing in 2012. This syudy compares the Taiwan national public housing policy and the Taipei local social housing overall policy planning. The purpose of this study is to examine if the Taipei social housing policy suits the rent market or not. We discussed the advantages and disadvantages of Taipei policy planning, analyzed the need of improvement on Taipei social housing policy.