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Tang H.-T.,Neijiang Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

Recently, with rapid development of computer/network technology and algorithms for composing test paper, cyber-based online examination system is a practically valuable hot research concern. In the paper, the mathematical model is created for solving problems with the online test paper composition system. Through comparative analysis of merits and shortcomings of various coding schemes, and to overcome the shortcoming that traditional genetic algorithms easily fall into premature convergence, it utilizes the adaptive adjustment method of dynamic parameters and elitist strategy to improve to develop the online test paper forming scheme based on adaptive genetic algorithm. For the selection of each parameter, simulation test is conducted to obtain the solution approximate to the best one. © (2014) Trans Tech Publications, Switzerland.

Li Q.,Neijiang Vocational and Technical College
International Journal of Simulation: Systems, Science and Technology | Year: 2016

In the network economy era, it is vital to operate more efficiently and create more value in the e-business environment which has involved ever more companies. They are concerned with the supply chain management which occupies an increasingly important position. The e-commerce technology presents new features and trends on how to build and improve the supply chain, how to integrate the supply chain as a single whole which is highly competitive and has become an important topic for research. In this paper, the system knowledge base provides a deeper understanding of the nature of e-commerce and supply chain and its management. Based on the analysis of the impact of electronic commerce, and focusing on the supply chain under the premise to build e-commerce environment, we discuss the principles, policies and method to provide reference for corporate design and supply chain information sharing in e-commerce. This will provide scientific and business information quickly into the economy, and promote the economic value of e-commerce in the whole economy with extensive and real implementation. © 2016, UK Simulation Society. All rights reserved.

Zhang D.S.,Neijiang Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

To resolve conflicts between share and collaborative analysis requirements of security alarm and alert data holders' worries about privacy, it firstly probes into the anonymized protection method Incognito. Based on that, it improves the algorithm to solve existing problems by extending common data like privacy protection targets to alert data. The generalized anonymous processing model for alert data is developed and the quantitative evaluation is realized between the level of alert data's secret protection and data quality. With authoritative data set of intrusion detection attack scenario as test data, the experiment validates efficiency and effectiveness of the proposed method on the part of performance and security. © (2014) Trans Tech Publications, Switzerland.

Li Y.,Neijiang Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

In fault detection process of large tanning machine, fault signal fluctuations are susceptibly caused by interference of external environment. The traditional methods are difficult to accurately classify fault detection of such random fluctuations, resulting in latter detection with low accuracy. To avoid these shortcomings, support vector algorithm based on least squares is proposed for fault detection of large tanning machine. Experimental results show that the algorithm can improve the accuracy of fault detection. © (2014) Trans Tech Publications, Switzerland.

Guo D.,Chengdu University of Information Technology | Zhang X.,Chengdu University of Information Technology | Ju H.,Chengdu University of Information Technology | Liu H.,University of Sichuan | Chen J.,Neijiang Vocational and Technical College
Lecture Notes in Electrical Engineering | Year: 2016

This paper introduces the concept of calibration techniques and a kind of commonly used calibration method for three-dimensional (3D) target feature points. In the experiment, firstly, to improve the accuracy of the information corner, we selected optimizing and preprocessing method appropriately, and SUSAN algorithm is used to extract corner information. As a reference or approximation, linear model is utilized to get the linear model parameters, and then, different points are selected in the iteration method for more accuracy. The experimental results demonstrate this designed method can obtain the camera calibration parameters accurately. © Springer-Verlag Berlin Heidelberg 2016.

Guo D.,Sichuan University | Guo D.,Neijiang Vocational and Technical College | Liu P.,Sichuan University | She Y.,Saset Healthcare | And 3 more authors.
Electronics Letters | Year: 2013

In practical ultrasonic images, post-processing that involves incoherent frame averaging such as persistence, spatial compounding and frequency compounding creates a layer of smoothed out electronic noise that is analogous to fog in photographic images. A novel approach to enhance ultrasound image contrast based on a modified dark channel model used to dehaze photographs is presented. Local minimum intensity is used to highlight image contrast, control influence of noise layer and improve detail resolution by different levels. The experimental results show that the proposed method has better performance over the existing methods in improving the quality of the ultrasonic image. © The Institution of Engineering and Technology 2013.

Zhu D.,Neijiang Vocational and Technical College | Chen X.,Southwest University | Zhou J.,Southwest University
Chinese Journal of Applied and Environmental Biology | Year: 2014

The major ecological characteristics of urban mountain parks are relatively high heterogeneity, vulnerable eco-environment, unstable slopes, and susceptibility to soil erosion, water and soil loss, vegetation destruction and slope slide. Thus environmental carrying capacity must be considered in the planning and designing of urban parks, especially mountain parks. Conducting quantitative analysis on environmental carrying capacity of urban mountain parks, identifying the limiting factors for the environmental carrying capacity and promoting a coordinated development of those factors is needed to pursue methods to protect park environmental resources. Taking the Zhaomu Mountain Park of Chongqing as subject, this research analyzed the environmental carrying capacity out of 4 aspects: ecological carrying capacity, space carrying capacity, facility carrying capacity and sociological carrying capacity. The individual integrated value of the four carrying capacity was 170 499 p/d, 56 958 p/d, 9 736 p/d and 10 342 p/d, respectively. Therefore the final integrated value of environmental carrying capacity of the Zhaomu Mountain Park was 170 499 person-time/d. Evaluated by the above analysis, the master plan for the Zhaomu Mountain Park is reasonable. In conclusion, quantitative analysis of environmental carrying capacity will provide reference bases and relevant solutions for further park development and management.

Li Q.,Neijiang Vocational and Technical College
International Journal of Simulation: Systems, Science and Technology | Year: 2016

How to evaluate e-commerce logistics service quality research has not yet formed a complete and scientific theoretical system and method, the paper studies on this issue, using extension theory, the establishment of e-commerce logistics service quality evaluation model, an effective solution to the e-commerce logistics services quantitative evaluation of quality. In this paper extenics in primitive theory analysis method, through the expansion of e-commerce logistics service quality analysis, quality logistics services suited to e-commerce environment evaluation system, and the use of the nonlinear extenics extensive comprehensive evaluation establishes the evaluation model of e-commerce logistics service quality, effective solution to the evaluation of various indicators for different objects of the importance of different issues, has some practical value. © 2016 UK Simulation Society. All rights reserved.

Liu Y.,Neijiang Vocational and Technical College | Zhao P.,Xihua University
Zhuzao/Foundry | Year: 2010

The Al-11Si-1.1Ni-0.2Fe alloy was overheated at different temperatures, and the influence of the overheating treatment on the effects of Zr, Ti, Mg and RE in the alloy was tested. The results show that overheating treatment at temperature 1050°C could improve the tensile strength and the elongation of the alloy, but the grain refinement effect of Zr and Ti on the alloy were not displayed, the modification effect of RE on eutectic silicon was also not found. Mg displays a remarkable strengthening effect on alloy, the tensile strength increased by 14.4% at as-cast state and 100% after heat treatment.

Xiao Y.Q.,Neijiang Vocational and Technical college | Wan Y.P.,Construction Bureau | Liu B.X.,Xihua University
Applied Mechanics and Materials | Year: 2013

In order to establish the relation between acoustic emission parameter and rock mechanical damage mechanism, as well as to better figure out landscape limestone damage and deformation influenced by uniaxial compression, MTS815 rock mechanical electro-hydraulic servo test system and 8CHSPCI-2 acoustic emission and detection system are applied to implement a test and research on damage evolution of limestone under uniaxial compression and the corresponding acoustic emission feature. On this basis, the acoustic emission feature of limestone under uniaxial compression is analyzed. Moreover, based on the damage variable of "normalized" accumulated emission ringing count, the uniaxial compression limestone damage model based on acoustic emission feature is established, and the damage evolution curve and equation of limestone is figured out as well. Shown by the research, acoustic emission information reflects the internal damage of limestone, and is closely related with densification of inner original fracture, as well as emerging, developing, and merging of new fractures. The acoustic emission feature of limestone perfectly describes its deformation and damage evolution. © (2013) Trans Tech Publications, Switzerland.

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