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Recently, security of cognitive radio (CR) is becoming a severe issue. There is one kind of threat, which we call greedy spectrum occupancy threat (GSOT) in this paper, has long been ignored in previous work. In GSOT, a secondary user may selfishly occupy the spectrum for a long time, which makes other users suffer additional waiting time in queue to access the spectrum and leads to congestion or...
In the application of the field repair in the countryside, determination of the moisture content is very important. Compared with the traditional methods, ground penetrating radar (GPR) can measure soil moisture content in a wide region at the same time. This paper presents a prediction method about the moisture content based on the multiple regression and the radial basis function (RBF) neural network...
This paper addresses the problem of establishing hybrid instrument tracking using optical and electromagnetic devices for therapeutic application. Concretely, the hybrid tracking method is a video tracking system based on tracking a uniquely designed marker, and present a scenario where the electromagnetic system can be combined with the video based system to obtain a cost-effective system. A developed...
Content-based image retrieval often uses the integration of various features. The characteristic dimensions are up to hundreds of dimensions. The capabilities for image representation", "storage", " management far exceed that of the database. Retrieval and matching of large-scale image are the urgent problems which need to be solved. To solve the construction of image indexing...
Computer Science and Software Engineering are majors to train students with practice and creative capabilities. They emphasize the trainings of software development abilities for integration and real projects. This paper suggests constructing the creative engineering laboratory at the two majors which provides the practice platform to students who would become advanced and creative talents. The paper...
This paper summarized the airworthiness requirements and the A320 aircraft maintenance manual, to propose the top-level design of hydraulic systems based on the airworthiness regulations. On this basis, an all-operation-profile fault reconfiguration strategy of hydraulic system provided to ensure that the system could achieve the optimal fault reconfiguration in different operation profile.
The neural networks have been widely applied to optimum calculation and solution of complicated problems. In particular, the evolutional learning neural network has better characteristic and higher precision than other neural networks. But the slow computational rate of evolutional learning and the local-optimum of the evolutional learning neural network seriously influence its application. In this...
With the development of computer technology and network invasively and continuously, computer has already become a part of our life. Computer could supply new teaching mode combined education with game. Now college should be education between oriented-student and oriented-society which cannot stick into textbook, but can blend theory and practice. Therefore, animate and visualized education mode is...
At present, the Database Application System Interface and access logic are all auto-generated by dragging the data table object from the database server view in the database application system development environment, or by linking the well-designed interface controls with the fields of the table in the database. A new direction of Interface Controls Descriptions (ICD method) is proposed, which is...
This quantitative study investigated the impact of digital divide factors on perceived motivation to utilize technology to learn English. Four latent digital divide related constructs were determined by factor analysis. They are a) perceived computer and Internet skills, b) school-related Internet use, c) computer and Internet resources outside the home, and d) gaming/leisure use of the Internet....
This paper proposes a novel fast-semi-supervised-FCM algorithm (fsFCM) to fundamentally overcome the critical disadvantages of Pedrycz's semi-supervised-FCM(sFCM) ,i.e., degeneracy to classical FCM and slow convergence, particularly when applied in actual data set. Experimental results demonstrate that fsFCM can outperform sFCM in accuracy, speed and robustness for clustering. Moreover, it shows that...
Although the ever growing Web contain information to virtually every user’s query, it does not guarantee effectively accessing to those information. In many situations, the users still have to do a lot of browsing in order to fuse the information needed. In this paper, we propose the idea of gadget creation such that extracted data can be immediately reused on personal portals by existing presentation...
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