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Cognitive radio is an innovative technology which seeks to provide a new way to extend utilization of available spectrum. The spectrum detection is an essential problem for cognitive radio. Spectrum sensing is an efficient way to detect spectrum holes in cognitive radio network. In this paper, we present cyclostationary Detection Based on Non-cooperative spectrum sensing in cognitive radio network...
In this paper we evaluate and compare two representativeand popular distributed processing engines for large scalebig data analytics, Spark and graph based engine GraphLab. Wedesign a benchmark suite including representative algorithmsand datasets to compare the performances of the computingengines, from performance aspects of running time, memory andCPU usage, network and I/O overhead. The benchmark...
In order to resolve collaborative filtering recommendation system recommended decline in the quality for the sparse dataset, a dynamic Item-based weight collaborative recommendation algorithm is presented, which user's preference weight items vector set is constructed based on filtering user's evaluating data and the data rate measured and time-weighted are done, then the Item-based & weighted...
In the traditional positioning system of the overhead crane, the method used is low positioning accuracy and ineffectiveness. In this paper, a novel positioning system is presented, which is a new positioning control system using laser range finders and bar code positioning system (BPS) to locate an overhead crane. The actual application shows that novel positioning control system is more than 200...
Teacher teaching effectiveness test is a very important link in the teaching procession. A test model on the teacher teaching effectiveness of the landscape CAD course is established with group decision analytical hierarchy process so as to provide a basis for improving the teaching quality. This test model is made up of 3 layers including the target layer, the element layer and the index layer. The...
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