Papers by Keyword: RBS

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Authors: Jun Feng Tian, Huai Xiang Wen
Abstract: Wireless sensor network applications often require a scalable time synchronization with the environment and communicating. Most of time synchronization algorithms are based on hierarchical structure and the precision is promoted at the expense of more complicated calculation. At the same time, the time synchronous is slower on the whole network because of the worse channel collision. This paper presents a novel time synchronization algorithm on the basis of synchronizer of clustering architecture. We adopt the improved RBS approach and introduce the synchronizer as to reducing messages’ overhead efficiently. Finally, performance of this algorithm is illustrated by a simulation experiment.
Authors: Hao Gang, Yi Zhuang
Abstract: Concerning the problem that classical time synchronization algorithms applied to large-scale Wireless Sensor Network have low precision and high energy consumption, this paper proposes a time synchronization algorithm based on cluster-tree. The algorithm can decrease the synchronization hop count by constructing a spanning tree, and uses two-way SRS in inter-cluster and one-way ROS in intra-cluster to reduce the number of messages required for the network synchronization. The experimental results show that the algorithm can keep the network synchronization precision at a higher level and effectively reduce energy consumption of nodes compared with the RBS and TPSN.
Authors: Narcis Mestres, M. Ben El Mekki, F.J. Campos, Jordi Pascual, Erwan Morvan, Phillippe Godignon, José Millan, Giorgio Lulli
Authors: Nicolás Di Lalla, Rodolfo A. Pérez, Fanny Dyment
Authors: M. Stojanović, M. Milosavljević, C. Jeynes
Authors: M. Siad, Samira Abdelli-Messaci, Tahar Kerdja, Slimane Lafane, M. Abdesselam
Abstract: Carbon nitride films were synthesized by pulsed laser ablation of graphite target under nitrogen ambience. The third harmonic of a pulsed Nd-YAG laser of 355 nm wavelength and 7 ns pulse duration was focused onto a rotating target at an incidence angle of 45°. The laser fluence at the target surface was set at 30 J/cm2. The carbon nitride films were deposited on (100) silicon substrate kept at room temperature and placed at a distance of 40 mm from the target surface. The CNx films were grown under N2 gas in the pressure range of 5×10-3 to 4×10-1 mbar. The deposited films composition was investigated by different techniques RBS, NRA and AES. We found an N/C ratio equal to 0.4 in the pressure range cited above.
Authors: T. Akane, S. Matsumoto, I. Mizushima
Authors: M. Kanaya, Hirokatsu Yashiro, Noboru Ohtani, Masakazu Katsuno, J. Takahashi, S. Shinoyama
Authors: A. Gerhardt, J. Donecker, B. Selle, Jürgen Wollweber
Authors: Kenneth A. Jones, Pankaj B. Shah, Michael A. Derenge, Matthew H. Ervin, G.J. Gerardi, Jaime A. Freitas, G.C.B. Braga, R.D. Vispute, R.P. Sharma, O.W. Holland
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