Huang D.,Jiangmen Polytechnic
Chemical Engineering Transactions | Year: 2016
Based on the analysis of the characteristics and mineralization process of the polymetallic ore deposit in South China, this paper applies the improved nonlinear technology (GA-SVM) to the metallogenic prognosis, and provides a new idea for the prediction of the favorable degree of mineralization. On the basis of the analysis of the South China ore district mineralization favorable degree, select 28 learning samples and 10 geological variables related to ore-forming. Support vector machine (SVM) method based on genetic algorithm(GA) is applied for the construction of the mineralization favorable model, and compare with the prediction results of BP neural network model. The results show that the GA-SVM regression model can well predict the nonlinear relationship between the favorable degree and the geological variables. When the number of samples are limited, GA-SVM has higher fitting precision than BP neural network, more suitable for nonlinear metallogenic prediction work. Metallogenic favorability analysis helps to understand the process of polymetallic deposit, with strong promotion significance. Copyright © 2016, AIDIC Servizi S.r.l.
Zheng Y.,Jiangmen Polytechnic
ICCRD2011 - 2011 3rd International Conference on Computer Research and Development | Year: 2011
Moving object index method is the key technology for moving object data base, the performance of which determines the efficiency of the whole data base system. Upon the request for temporal query, this article focuses on moving object index for full temporal query, proposes a moving object index structure FT tree for temporal query, invites theories of various versions into TPR tree, improves the TPR tree that supports future query, and keeps various versions of TPR tree effectively to realize past, present and future temporal query. © 2011 IEEE.
Nie S.Z.,Jiangmen Polytechnic
Applied Mechanics and Materials | Year: 2014
With the development of computer and network technology, traditional way of examinations because of too many artificial proportion, has become increasingly unsuited to the modern teaching demands. In this paper, used the popular B/S structure, combined with the MVC pattern in Java EE platform, used Apache Tomcat server, MySQL database technology, designed a suitable test database, utilized improved genetic algorithm to achieve automatic test paper, combined JavaBean and Session technical etc. to complete the automatic scoring and evaluation functions. Used the database connection pool to establish efficient connections, utilized regular expressions for user authentication, used Ajax technology to achieve partial-page refresh functions, the design fully reflected the superiority of the Java EE platform. © (2014) Trans Tech Publications, Switzerland.
Tang X.G.,Jiangmen Polytechnic
Advanced Materials Research | Year: 2014
In view of the incomplete signal and other issues brought by the threshold trigger in the conventional blast wave signal test, this paper designed a post-trigger data high-speed collection method, adopted the ARM7 kernel MCU to complete the design of the hardware scheme and preparation of the corresponding test software, then developed the post-trigger data high-speed collector prototype, and completed the explosive shock wave signal collection through the test. Experiments show that the post-trigger high-speed data collector developed in this paper has the characteristics of simple interface circuit, high precision collection, good reliability, simple operation, which can meet the test requirements of blast wave. © (2014) Trans Tech Publications, Switzerland.
Zhao Y.,Jiangmen Polytechnic
Journal of Engineering Science and Technology Review | Year: 2014
Model predictive control (MPC) differs from other control methods mainly in implementation of the control actions. In this paper, the tracking error performance index of rolling optimization of predictive control is designed for a class of nonlinear systems by the relative degree, then employed to design controller for robot manipulator. In other words, the robot manipulator's reference trajectory is based on Taylor expansion, and the actual trajectory is substituted into the performance cost function which is derivated for minimum to obtain the controller. Then the performance analysis for the closed system is made. Simulation results demonstrate the effectiveness of the method based on Taylor expansion. © 2014 Kavala Institute of Technology.
Zhao Y.,Jiangmen Polytechnic
International Journal of Control and Automation | Year: 2014
In this paper, an online receding robust predictive control scheme is proposed for input-constrained semi-trailer system with delay and disturbance. The controller method meets the requirements of control constraint and, based on dual-mode control, the method is obtained by online optimization of performance index. The performance index is the cumulative sum of quadratic weighted value of minimal states. Controller output is calculated by means of linear matrix inequality (LMI), and the controller itself can ensure the asymptotic stability and disturbance attenuation of semi-trailer closed-loop system. Finally, simulation results confirm the effectiveness of the method. © 2014 SERSC.
Huang Y.-S.,Jiangmen Polytechnic |
Liu H.-W.,Guangxi University
Journal of Materials Engineering and Performance | Year: 2011
By micro-arc oxidation (MAO), the oxide coatings were prepared on the surface of magnesium alloys in a composite electrolytic solution. The microstructures of the coating layer and the interface between coating and substrate were analyzed by using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The oxide coating consists of two layers (the outer and the inner layer). Although both layers are composed of microcrystalline MgO and amorphous phase, the inner layer is more compact and rich in fluorine with a thickness of about 1-2 μm. Fluorine plays an important role in the inner dense layer formation. The inner layer, like a barrier wall, blocks the thickness of the oxide coating to increase and improves corrosion resistance. The formation mechanism of the inner layer is also discussed. © ASM International.
Luo M.,Jiangmen Polytechnic
WIT Transactions on Information and Communication Technologies | Year: 2014
Using regression analysis is used to NBA 2012-2013 season scoring before 15 tactical capability indexes were statistically analyzed. Through the technical index regression analysis regression prediction model is established, the technical indexes and the independent variables linear combination that scoring standardization and observations of goodness-of-fit better, stronger practicability and maneuverability, which has great significance to the development of inspiration. © 2014 WIT Press.
Zhao Y.,Jiangmen POLYTECHNIC
International Journal of Digital Content Technology and its Applications | Year: 2012
Wireless sensor networks can be deployed in the physical environment to monitor a wide variety of real world phenomena and collect data; there are many military and civilian applications such as surveillance, monitoring, tracking, disaster recovery, building automation. The paper introduces intelligent control basic knowledge, classification, applications, then it analyzes intelligent control technology application based on wireless sensor networks, and designs intelligent control based on wireless sensor networks.
Li H.,Jiangmen Polytechnic |
Xu Z.,Jiangmen Polytechnic
Journal of Luminescence | Year: 2013
A series of composite PC films with different morphologies are fabricated through a facile approach. The effects of different surface morphologies and the stopband positions of composite PC films on photoluminescence (PL) behaviors are systematically investigated. We observe that the PL on composite PC surfaces can be manipulated. When dyes enter into interstitial space of PC films without photo-crosslinkage, inhibited spontaneous emission is evident and emission is enhanced at the blue edge of photonic stopband. When dyes are deposited on outer surface of composite PC films, inhibited spontaneous emission disappears, but an obvious enhancement of the emission is achieved, where the composite PC surface acted as a Bragg mirror. The study will be of great guideline for future development of highly efficient optical devices. © 2013 Elsevier B.V.