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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. Source

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. Source

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. Source

Guo D.Q.,University of Sichuan | Guo D.Q.,Neijiang Vocational and Technical College | Yang H.Y.,University of Sichuan | Zhang C.Y.,University of Sichuan | Liu D.C.,University of Sichuan
Advanced Materials Research | Year: 2013

B-mode ultrasonic images are often pervaded by the electronics noise and speckle artifact, which may make the interpretation of medical images difficult. In this paper, a legible method for ultrasonic image is constructed and it can be effective to suppress the noise and improve the images quality. Dynamic persistence technology based on temporal multi-frames is utilized to smooth the electronics noise and even lower speckle artifact. To reduce computing complexity, a sum table method and conjugate direction search approaches are applied to speed up estimation of motion vector. The guided image filter strategy is used to enhance the contrast and detail resolution for the processed image by persistence. Experimental results show that the proposed method is effective to smooth noise and enhance contrast of ultrasound image in vivo. © (2013) Trans Tech Publications, Switzerland. Source

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. Source

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