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Magnetic flux leakage (MFL) inspection is one of the most commonly used nondestructive testing (NDE) technologies. This paper proposes a novel method for classifying the MFL response segments based on convolution neural network (CNN). In order to skip the procedure of saving the normalized MFL segment and save some computing time, a normalization layer is added to the proposed model. Moreover, the...
Game simulation system is built to train players' game ability throughout exercising simulated historic game cases time and time again. From the point of view of human cognition, situation awareness, strategy searching and selecting are two important parts of game procedure, which work in a complementary way in game process. How to represent game situation awareness and search suitable strategy based...
In this paper, a delayed worm propagation model with birth and death rates is discussed. The number of system reinstallations may be increased when the hosts get unstable (infected or quarantined). In view of such situation, dynamic birth and death rates are introduced. Afterwards, the stability of the positive equilibrium is studied. Through the theoretical analysis, it is proved that the model is...
Due to the vulnerability of computer system, Internet worm is still greatly threatenning network security. It is found that the spread of worm regularly change because of the different space distributions of hosts and this phenomenon is defined as diurnal pattern. Based on diurnal pattern, two worm propagation models, namely simple diurnal forced model and complicated diurnal forced one, are constructed...
During the construction of computer network quality course to improve the quality of computer network course, the paper designs and develops the computer network quality course website. The development of the website is based on B/S architecture and MVC design pattern and adopts the Struts framework. The website is enough to incarnate the user-centered development idea and provides an excellent intercourse...
The propagation model of P2P worms can reflect the worm behaviors and identify weakness in the worm propagation which gives guidelines to worm detection and defense. To improve the security of P2P network, a mathematical model is proposed which combines dynamic quarantine and P2P churn. The SIQRW model departs from previous P2P worm models in that considering the dynamic quarantine methods and the...
In this paper, a worm propagation model with pulse quarantine strategy is proposed to control the spread of the worm. This model which combines both the pulse quarantine and the constant quarantine strategy not only describes the propagation of the worm well and but also makes the infections eradicated effectively. Here, we show that there exits a stable infection-free periodic solution of the system...
A chaotic worm propagation model is proposed to analyze early worm propagation process in this paper. Worm propagation is very complex, whose major transitions are between regular cycles and irregular, possibly chaotic epidemics. This paper deals with a discrete mathematical model of early worm propagation systems: Chaotic Susceptible-Infected (CSI) model. In the CSI model, three threshold values...
This paper analyzes the development tendency of optical networks under multi-service in the future, proposes an original ideology of transport adaptability in reconfigurable all-optical networks, researches on the key techniques of the complex coupling mechanism and dynamic controlling in the process of selecting lightpaths and tuning, such as the architecture of complex adaptability system (CAS)...
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