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Search Results: 1 - 10 of 35503 matches for " Yong Xie "
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Research on Integrity Evaluation System of Food Brand Enterprises Based on the Creeds of Business Governance*  [PDF]
Xie Fan, Meng Yong
Open Journal of Business and Management (OJBM) , 2014, DOI: 10.4236/ojbm.2014.21008
Abstract:

Under today’s market environment, the brand is an important intangible asset to enterprises. If the brandiscertain to win in the market, the first condition is to establish a good image of integrity and makesit firmly rooted in the minds of consumers. In recent years, a spate of food brands lacking of integrity events shocked the nation and the world which make people’s health, and economic development under serious threat. How to evaluate the integrity of the food brands, find out the reason for lacking of integrity and provide a reference to the integrity system construction of food brand enterprises are the main content of this paper. This paper is based on the Creeds of Business Governance in Oriental Management theory and builds integrity indicator system according to the four ethics—honesty, trustworthiness, justice and benevolence. AHP is utilized to calculate the index weight to make the integrity evaluation system with scientific and operability.

Stability of columns with original defectsunder periodic transient loadings
Cai Yong, Xie Jiawei
- , 2017, DOI: 10.3969/j.issn.1003-7985.2017.01.011
Abstract: To study the influence of original defects on the dynamic stability of the columns under periodic transient loadings, the approximate solution method and the Fourier method of the stable periodic solution are adopted while considering the influence of original defects on columns.The dynamic stability of the columns under periodic transient loadings is analyzed theoretically.Through the study of different deflections, the dynamic instability of the columns is obtained by Maple software. The results of theoretical analysis show that the larger the original defects, the greater the unstable area, the stable solution amplitude of columns and the risk of instability caused by parametric resonance will be. The damping of columns is a vital factor in reducing dynamic instability at the same original defects. On the basis of the Mathieu-Hill equation, the relationship between the original defects and deflection is deduced, and the dynamic instability region of the columns under different original defects is obtained. Therefore, reducing the original defects of columns can further enhance the dynamic stability of the compressed columns in practical engineering.
A Novel Over-Current Protection Technique Applied to Peak-Current Type DC-DC Converter  [PDF]
Yu Fang, Tengfei Wei, Liang He, Yong Xie, Yan Xing
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.26045
Abstract: The change of the over-current protection point of the power switches, caused by slope compensation, is analyzed in detail. It is discovered that the peak current protecting value increases as the duty cycle decreases. As a result, the safety operation of the switches is damaged greatly. A novel solution to improve over-current protection with constant peak current limitation is proposed by inducing synchronous slope compensation into the current limit function instead of the original constant voltage. The design principle and method of the protection circuit based on a UC3846 PWM controller for the interleaved dual-forward converter is presented. Experimental results are given to verify the analysis.
Application of Particle Filter for Vertebral body Extraction: A Simulation Study  [PDF]
Hongyan Cui, Xiaobo Xie, Shengpu Xu, Yong Hu
Journal of Computer and Communications (JCC) , 2014, DOI: 10.4236/jcc.2014.22009
Abstract:

Lumbar vertebra motion analysis provides objective measurement of lumbar disorder. The automatic tracking algorithm has been applied to Digitalized Video Fluoroscopy (DVF) sequence. This paper proposes a new Auto-Tracking System (ATS) with a guide device and a motion analysis to automatically measure human lumbar motion. Digitalized Video Fluoroscopy (DVF) sequence was obtained during flexion-extension lumbar movement under guide device. An extraction of human vertebral body and its motion tracking were developed by particle filter. The results showed a good repeatability, reliability and robustness. In model test, the maximum fiducial error is 3.7% and the repeatability error is 1.2% in translation and the maximal repeatability error is 2.6% in rotation angle. In this simulation study, we employed a lumbar model to simulate the motion of lumber flexion- extension with the stepping translation of 1.3 mm and rotation angle of 1°. Results showed that the fiducial error was measured as 1.0%, while the repeatability error was 0.7%. The sequence can be detected even noise contamination as more as 0.5 of the density. The result demonstrates that the data from the auto-tracking algorithm shows a strong correlation with the actual measurement and that the Vertebral Auto-Tracking System (VATS) is highly repetitive. In the human lumbar spine evaluation, the study not only shows the reliability of Auto-Tracking Analysis System (ATAS), but also reveals that it is robust and variable in vivo. The VATS is evaluated by the model, the simulated sequence and the human subject. It could be concluded that the developed system could provide a reliable and robust system to detect spinal motion in future medical application.

Synchronization of Chaotic Energy Resource System  [PDF]
Tie-Bang Wang, Hai-Yong Xie, Ai-Gen Xie
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.41011
Abstract:

Taking a four-dimensional energy resources demand-supply system between the East and West of China, this paper discusses its chaotic behavior, and via the unilateral coupling method we lead the system to synchronization successfully. But not all the values of coupling coefficient can lead to synchronization. The values of coupling coefficient have a range. By calculating the maximal relative Lyapunov exponents’ spectrum, we gained the value range of coupling coefficients. Within the value range, the two coupling systems can achieve synchronization, otherwise can’t. Further more, the values of coupling coefficient are in connection with the chaos synchronizing time. At last, we get the relationship of coupling coefficients and chaos synchronizing time.

An Improved Algorithm for Imbalanced Data and Small Sample Size Classification  [PDF]
Yong Hu, Dongfa Guo, Zengwei Fan, Chen Dong, Qiuhong Huang, Shengkai Xie, Guifang Liu, Jing Tan, Boping Li, Qiwei Xie
Journal of Data Analysis and Information Processing (JDAIP) , 2015, DOI: 10.4236/jdaip.2015.33004
Abstract: Traditional classification algorithms perform not very well on imbalanced data sets and small sample size. To deal with the problem, a novel method is proposed to change the class distribution through adding virtual samples, which are generated by the windowed regression over-sampling (WRO) method. The proposed method WRO not only reflects the additive effects but also reflects the multiplicative effect between samples. A comparative study between the proposed method and other over-sampling methods such as synthetic minority over-sampling technique (SMOTE) and borderline over-sampling (BOS) on UCI datasets and Fourier transform infrared spectroscopy (FTIR) data set is provided. Experimental results show that the WRO method can achieve better performance than other methods.
A General Calculating Method of Rotor’s Torsional Stiffness Based on Stiffness Influence Coefficient  [PDF]
Danmei Xie, Wangfan Li, Ling Yang, Yong Qian, Xianbo Zhao, Zhigang Gao
Engineering (ENG) , 2010, DOI: 10.4236/eng.2010.29090
Abstract: In order to develop a general calculating rotor’s torsional stiffness based on stiffness influence coefficient for different rotor assembling, the calculation method of the torsional stiffness influence coefficient of equal thickness disc is researched in this paper at first. Then the torsional stiffness influence coefficient λ of equal thickness disc is fit to a binary curved face and a calculation equation is obtained based on a large quantity of calculating data, which lays the foundation for research on a general calculating method of rotor torsional stiffness. Thirdly a simplified calculation method for equivalent stiffness diameter of stepped equal thickness disc and cone disc in the steam turbine generators is suggested. Finally a general calculating program for calculating rotor’s torsional vibration features is developed, and the torsional vibration features of a verity of steam turbine rotors are calculated for verification. The calculating results show that stiffness influence coefficient λ of equal-thickness disc depends on parameters of B and H, as well as the stiffness influence coefficient λ; and discs with complex structure can be simplified to equal-thickness discs with little error by using the method suggested in this paper; error can be controlled within 1% when equivalent diameter of stiffness is calculated by this method.
Influence of the Compacts Homogeneity on the Incidence of Cracks during Thermal Debinding in Ceramic Injection Molding

Xianfeng Yang,Zhipeng Xie,Yong Huang,

材料科学技术学报 , 2009,
Abstract: During thermal debinding in ceramic injection molding, the inhomogeneity of green body is a key origin of cracks. In this study, the impact of low molecular weight binders on the homogeneity of the green body was investigated. Incidence of cracks during thermal debinding indicated that the volume ratio of wax to stearic acid should be out of high viscosity and incompletely wetting region. In these two formulation regions,typical inhomogeneous microstructures were observed. By mercury intrusion method, it was shown that pore size distribution of the debinded compacts was determined by thermal degradation of low molecular weight binders. A particle-rich region model was established to predict the nucleation of cracks caused by solid loading fluctuation. The criterion of cracks nucleation was that local capillary force from solid loading fluctuation was larger than the suction force from the surroundings.
Design of an Ultra-Wideband Antenna Using Boolean Differential Evolution Algorithm
Lei Xie;Yong-Chang Jiao
PIER Letters , 2011, DOI: 10.2528/PIERL11080804
Abstract: A compact ultra-wideband (UWB) slot antenna based on a mesh-grid structure is designed. A Boolean differential evolution (BDE) algorithm is used to optimize the mesh-grid structure as well as other parameters of the proposed antenna for good impedance matching in the UWB band. The optimized UWB antenna has a compact size of 24.2 × 32.2 mm and is fabricated and measured. According to the measured results, the proposed antenna yields a wide bandwidth, defined by S < -10 dB ranging from 2.8 to 11.2 GHz. And it shows that the BDE algorithm is an effective method for antenna design.
Identification of Different Varieties of Sesame Oil Using Near-Infrared Hyperspectral Imaging and Chemometrics Algorithms
Chuanqi Xie, Qiaonan Wang, Yong He
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0098522
Abstract: This study investigated the feasibility of using near infrared hyperspectral imaging (NIR-HSI) technique for non-destructive identification of sesame oil. Hyperspectral images of four varieties of sesame oil were obtained in the spectral region of 874–1734 nm. Reflectance values were extracted from each region of interest (ROI) of each sample. Competitive adaptive reweighted sampling (CARS), successive projections algorithm (SPA) and x-loading weights (x-LW) were carried out to identify the most significant wavelengths. Based on the sixty-four, seven and five wavelengths suggested by CARS, SPA and x-LW, respectively, two classified models (least squares-support vector machine, LS-SVM and linear discriminant analysis,LDA) were established. Among the established models, CARS-LS-SVM and CARS-LDA models performed well with the highest classification rate (100%) in both calibration and prediction sets. SPA-LS-SVM and SPA-LDA models obtained better results (95.59% and 98.53% of classification rate in prediction set) with only seven wavelengths (938, 1160, 1214, 1406, 1656, 1659 and 1663 nm). The x-LW-LS-SVM and x-LW-LDA models also obtained satisfactory results (>80% of classification rate in prediction set) with the only five wavelengths (921, 925, 995, 1453 and 1663 nm). The results showed that NIR-HSI technique could be used to identify the varieties of sesame oil rapidly and non-destructively, and CARS, SPA and x-LW were effective wavelengths selection methods.
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