Guangdong Mechanical and Electrical College

Guangzhou, China

Guangdong Mechanical and Electrical College

Guangzhou, China
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Wang Z.,Jiangxi University of Science and Technology | Xu X.,Guangdong Mechanical and Electrical College
Proceedings - IEEE 9th International Conference on Mobile Ad-Hoc and Sensor Networks, MSN 2013 | Year: 2013

Because the broad application prospects of Internet of Things (IoT) and the progress of short-range wireless technology, the Internet and the intelligent terminals have an explosive growth, IoT is expected to become the next trillion-dollar information industry. In wired/wireless technologies, the machine to machine (M2M) communications have higher request to benefit people, include e-health, family energy management and entertainment. This paper represents technical indexes, application range, radio coexistence mechanism and suitable network standards of key radio technologies. In the application layer, this paper argues the cloud computing technology as the center to help process a large amount of data of the sensing layer, for providing efficient services to clients and effectively reducing the cost of smart home with the help of data processing. © 2013 IEEE.


Zhong J.,Guangdong Mechanical and Electrical College | Gan Y.,Guangdong University of foreign Studies
Nonlinear Dynamics | Year: 2015

In recent years, digital image processing has become commonplace with growing powerful and available image editing software. People without any professional technique can also manipulate and forge digital images easily. One of the most popular manners of digital image forgeries is the copy–move image forgery. Extensive researches in detecting copy–move forgery have made a deal of achievements, but most presented methods based on these researches have been only focus on some simple composite forgeries and not able to detect different types of post-processed forgeries. In this paper, we aim to deal with the post-processed forgery operations and scenarios, mainly geometric distortion. We introduce analytical Fourier–Mellin transform (AFMT) and focus on its discretization. We propose discrete analytical Fourier–Mellin transform (DAFMT). We also pay attention to high performance of DAFMT in detecting the copy–move image forgeries. Due to the AFMT described in polar coordinate, so we need to convert coordinate system from polar to Cartesian coordinates. To be computed conveniently, we define an auxiliary disk template to accomplish this conversion. We devote to the use of our proposed DAFMT in detection of image forgeries. A great deal of researches and experiments show that the proposed DAFMT can effectively resist translation, rotation, scaling, and added Gaussian noise operations. Compared with other relevant up-to-date methods, experiments also prove that DAFMT has made a progress in detecting and identifying the forgery images which are suffered from geometric distortion operations. © 2015 Springer Science+Business Media Dordrecht


Gan Y.,Guangdong University of foreign Studies | Zhong J.,Guangdong Mechanical and Electrical College
Nonlinear Dynamics | Year: 2015

In modern society, as the important medium of information transfer, digital image plays a more and more important role in our daily life. With the modern science and technology revolution, a social phenomenon that people without any professional technique can easily forge and process digital images become commonplace. The image composite forgery, also called copy–move forgery, is the most popular image forged operation. Mostly existing methods are inept for the detection of the composite forgery image underwent geometric distortions. This paper presents a robust and efficient analytical Fourier–Mellin transform (AFMT)-based method. The focus of AFMT method is to construct the scaling and rotation invariant and extract its invariances for the detection of composite forgery. First, the general AFMT expression is given. The radial complex exponential kernel of AFMT is discussed to get the orthogonal feature. Then, the invariant to scaling and rotation is presented to construct the image geometric moment invariants. To extract the scaling and rotation invariance of each pixel of detecting image, a disk template is applied for sliding on the detected image and calculating geometric invariant features. After extracting geometric features, useful geometric features are further filtered from image background information. Then, correlational features of pixels are sorted by lexicographic sorting. Pearson correlation coefficient is applied for identifying the similar continuous regions and locating their positions. Finally, the detected suspicious composite regions are marked. Extensive experiments have been performed to show that the presented AFMT method can detect the composite region in the forgery image precisely. It is also proven that it is more robust and efficient than other existing relevant methods. © 2015 Springer Science+Business Media Dordrecht


Zhong J.L.,Guangdong Mechanical and Electrical College | Gan Y.F.,Guangdong University of foreign Studies
Advanced Materials Research | Year: 2014

Based on analyzing the mathematical model of Brushless DC Motor (BLDCM) and the key researching on electric process state spaces of BLDCM main module, taking its one state space as an example, BLDCM system is proposed as a new method of simulation model. This method establish BLDCM dynamic mathematical model, and the simulation is made to verify the theoretical model. Experimental results demonstrate the new method is successfully applied to the design of the electric vehicle drive system simulation. © (2014) Trans Tech Publications, Switzerland.


Gan Y.,Guangdong University of foreign Studies | Zhong J.,Guangdong Mechanical and Electrical College
International Journal of Bifurcation and Chaos | Year: 2015

With the aid of sophisticated photo-editing software, such as Photoshop, copy-move image forgery operation has been widely applied and has become a major concern in the field of information security in the modern society. A lot of work on detecting this kind of forgery has gained great achievements, but the detection results of geometrical transformations of copy-move regions are not so satisfactory. In this paper, a new method based on the Polar Complex Exponential Transform is proposed. This method addresses issues in image geometric moment, focusing on constructing rotation invariant moment and extracting features of the rotation invariant moment. In order to reduce rounding errors of the transform from the Polar coordinate system to the Cartesian coordinate system, a new transformation method is presented and discussed in detail at the same time. The new method constructs a 9 × 9 shrunk template to transform the Cartesian coordinate system back to the Polar coordinate system. It can reduce transform errors to a much greater degree. Forgery detection, such as copy-move image forgery detection, is a difficult procedure, but experiments prove our method is a great improvement in detecting and identifying forgery images affected by the rotated transform. © 2015 World Scientific Publishing Company.


Wang N.,Guangdong Mechanical and Electrical College
Applied Mechanics and Materials | Year: 2014

Smart tourism is a new concept focus on the tourism experience promotion. It is necessary to improve tourist experience using smart technologies, so that more efficient and appropriate measures can be taken and make a contribution to tourism experience promotion. In this paper, smarter tourism comes to be known with the deepening of the influence of information technology. In order to realize the intensification, intellectualization and unionization of tourism management, a smarter tourism perception system must be constructed on the base of cloud computing and the Internet of things so that standard information service is available to tourists, businesses and governments via its safe and online communicative functions. Smarter tourism perception system can connect travel attractions, hotels, transportation and other facilities tourist destinations of things completely to the Internet system and integration, data integration as the core database of tourism resources, which provide a more convenient means of destination tourism management and services. © (2014) Trans Tech Publications, Switzerland.


Chen X.Q.,Guangdong Mechanical and Electrical College | Tong L.,Guangdong Mechanical and Electrical College
Advanced Materials Research | Year: 2014

Three liquid-gas separator units were designed and manufactured from transparent acrylic resin based on the concept of a new kind of validated high performance condenser. The separator units had different spaces between baffle and outlet arm or different header diameters. A visualization cold state test system was set up to explore the basic principle of liquid-gas separation and liquid discharge process, using air and water as the working fluids. Four kinds of liquid flow patterns were observed by the liquid staining and high-speed photography at inlet air superficial velocities from 1m/s to 15m/s and water superficial velocities from 0.0015m/s to 0.06m/s. The effects of operation conditions and structure parameters on the separation efficiency of the liquid-gas separator units were investigated. The results showed that under the experimental conditions, the separation efficiency was more than 70%, the separation efficiency could be improved by increasing the space between baffle and outlet arm as well as the header diameter. © (2014) Trans Tech Publications, Switzerland.


Yu W.L.,Guangdong Mechanical and Electrical College
Advanced Materials Research | Year: 2014

Aiming at the problems existing NC machining, combining with the existing advanced manufacturing mode, and cloud computing, application integration, new technologies such as service-oriented technology, based on cloud resources in manufacturing, manufacturing services in the cloud, the relationship between manufacturing cloud are expounded. On this basis, the design of the NC machining of cloud services management prototype system function structure, based on whole life cycle of application integration operation of the cloud service portfolio requirements are expounded, and the implementation is based on application integration and cloud service platform of CNC processing key technology are studied, for the future to realize efficient intelligent cloud manufacturing services management to provide theoretical support. © (2014) Trans Tech Publications, Switzerland.


Xia J.,GuangDong Mechanical and Electrical College | Wang G.,GuangDong Mechanical and Electrical College
Proceedings - 2015 International Conference on Intelligent Transportation, Big Data and Smart City, ICITBS 2015 | Year: 2015

With the worsening of the environment and the increasing depletion of oil resources, electric vehicles are gradually concerned and favored by the market as a kind of transportation almost with non-pollution, low noise and high efficiency. As one of the four key technologies of electric vehicles, battery is an important factor affecting the development and promotion of electric vehicles. And the study of charge and discharge management of electric vehicle battery by CAN bus technology is of great significance to the development of electric vehicles. © 2016 IEEE.


Suo H.,Guangdong Mechanical and Electrical College | Huang C.J.,Guangdong Mechanical and Electrical College
Applied Mechanics and Materials | Year: 2014

In recent years, the cloud computing has been a focus of research. With the development of the cloud computing, the mobile cloud computing is emerging. There are many issues for the mobile cloud computing (MCC) applications, and still face some challenges. In order to promote this domain, we first in brief review the research progress of MCC, and introduce the characteristic and concept model of MCC. Then we deeply analyze the issues of MCC including limited bandwidth and high latency, stability and availability of the network, cloud platform reliability, security and privacy. On the basis of these, we discuss the current solutions to solve these issues. © (2014) Trans Tech Publications, Switzerland.

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