Far field reconstruction from phaseless measurement dataEDP Sciences - Tập 2 - Trang 318-320 - 1997
Chen Zhangyou, Xu Penggen
A new method on phase inverse problem in near field far field transformation is presented in this paper. It makes the relation very clear between phase and amplitude on a curve surface and another surface by describing the relation of the fields on two closed curve surfaces by matrix. Comparing with the other created functionals, the functional based on this method belongs in real space rather tha...... hiện toàn bộ
Evaluation of cross-strait public library WebsiteEDP Sciences - Tập 11 - Trang 1202-1208 - 2006
Jiang Yimin, Hu Lan, Yang Zhifeng, Yan Guanxiang, Shen Xiangxing
In recent years, many evaluations on Web sites have been conducted, and relevant researches have also been carried out in academic circle. This paper introduces an innovative method called correspondence analysis to evaluate public library Websites from five aspects-traffic, visit, connectivity, speed and page views. Some suggestions based on the result of evaluation are given in this paper with a...... hiện toàn bộ
Linked-tree: An aggregate query algorithm based on sliding window over data streamEDP Sciences - Tập 11 - Trang 1114-1119 - 2006
Yu Yaxin, Wang Guoren, Su Dong, Zhu Xinhua
How to process aggregate queries over data streams efficiently and effectively have been becoming hot research topics in both academic community and industrial community. Aiming at the issues, a novel Linked-tree algorithm based on sliding window is proposed in this paper. Due to the proposal of concept area, the Linked-tree algorithm reuses many primary results in last window and then avoids lots...... hiện toàn bộ
Second approximation model for optical head in super high density storage technologyEDP Sciences - Tập 5 - Trang 155-158 - 2000
Wu Wan, Pei Xian-deng
The paper presents second approximation model for optical head in super high-density storage technology firstly and it is an important part for three grades approximate model of ultra-small-size quantum well corn-shaped laser and simulative calculations. It supplies the important and useful results for the NFOD optical head design with ultra thin active layer and ultra small spot laser.
Securing multicast route discovery for mobile ad hoc networksEDP Sciences - Tập 12 - Trang 189-192 - 2007
Mingxi Yang, Layuan Li, Yiwei Fang
This paper presents SMRAN, a novel securing multicast route discovery scheme for mobile ad hoc networks. The scheme relies entirely on hash chains based one-time signature mechanism, HORSEI, with very efficient signing and verifying, and we do this by improving the HORSE protocol through the introduction of intermediate hash joints. The main purpose of SMRAN is to provide source authentication for...... hiện toàn bộ