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Rijndael algorithm as AES has been implemented by hardware recently to improve the performance such as RFID-tag. Based on the research of S-box structure principle, this paper firstly analyzes the problem of short iterative output period and then presents novel hardware architecture of affine transformation based on improved polynomials. The architecture is simulated in Verilog HDL and implemented...
The main challenge of bioluminescence tomography (BLT) is the ill-posed, non-unique nature of the inverse problem. To get reliable reconstruction, permissible source region is a commonly used a priori knowledge in the inverse procedure. In this paper, to accurately reveal 3D distribution of bioluminescent sources from limited boundary measurement, we propose an iterative reconstruction method incorporating...
"Teaching content/resource modeling" and "teaching activities/process modeling" are two issues in teaching modeling research. Under the guidance of "model-driven" software engineering technology, we have summarized the classification of internet-based teaching-mode and researched characteristics of several modeling techniques of teaching process. After analyzing the applicability...
In order to solve the shortcoming of Geodesic Active Contour model that would possibly sink into the non-ideal local minimum when segmenting the objects having concave boundary, an adaptive Geodesic Active Contour model was presented. The new model could adjust the evolution speed of curve based on the curvature of curve and gradient of image by adding an acceleration item in the original model. Moreover,...
This paper is to study how to realize the seamless inter-AP handoff for the express mobile gateway on the train, which not only must execute the handoff rapidly, but also have to make the handoff decision quickly. Hence, the special and general inter-AP handoff concepts presented firstly and then a general inter-AP handoff model is built up. Based on this model, a radio-signal-measurement based handoff...
An open onboard Internet system model based on the centralized access mode is designed for the m-commerce on train which is easy to merge the oncoming broadband wireless access and network technologies.The functionalities and entities in each layer are investigated and the hot issues are discussed according to this model. It is shown that the onboard Internet applications including the m-commerce...
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