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| 1 | Fuzzy Control of LED Tunnel Lighting and Energy Conservation显示文摘Current highway tunnel lighting control systems are often manually controlled,resulting in significant energy waste.This article designs a fuzzy control algorithm for tunnel lighting energy control systems.The system uses LED (Light Emitting Diode) lighting,so the fuzzy control algorithm is designed for LED lights.The traffic and the natural illumination level are used as parameters in the intelligent lighting control algorithm.This system has been deployed in the Lengshui tunnel on the 49th provincial highway of Zhejiang province and operated for more than six months.The performance results show that the energy conservation system provides sufficient lighting levels for traffic safety with significant energy conservation. | Hong Zeng Jian Qiu Xingfa Shen Guojun Dai Peng Liu Shuping Le | 2011 | Tsinghua Science and Technology2011，16，6： | 17 |
| 2 | Clapping and Broadcasting Synchronization in Wireless Sensor Networks显示文摘The Clapping and Broadcasting Synchronization (CBS) algorithm,which is specifically designed for large-scale sensor networks with low communication overhead and high synchronization accuracy,is introduced.The CBS protocol uses broadcasting rather than pairwise communication to accomplish synchronization.In the CBS scheme,the initial offset of local clocks can be successfully eliminated by the operation of clapping nodes,which leads to significant improvement in synchronization accuracy.The CBS protocol was implemented on the TelosB platform and its performance was evaluated in a variety of experiments.The results demonstrate that the CBS protocol outperforms the current state-of-the-art approach,the Flooding Time Synchronization Protocol (FTSP),in both single-hop and multi-hop scenarios in terms of synchronous precision and energy consumption.In multi-hop scenarios,the CBS algorithm keeps about 50% of its synchronization errors within 1 ms.In comparison,the FTSP keeps less than 7% of its synchronization errors within this range.In both single-hop and multi-hop scenarios,the CBS protocol is over 3.2 times more energy-efficient than the FTSP. | Xingfa Shen Xin Qian Bei Zhao Qiming Fang Guojun Dai | 2011 | Tsinghua Science and Technology2011，16，6： | 1 |
| 3 | Energy efficient joint data aggregation and link scheduling in solar sensor networks显示文摘 | Jianhui Zhang Xingfa Shen Shaojie Tang Guojun Dai | 2011 | Computer Communications2011，，18： | 1 |
| 4 | Broadband Fluorescence Guided-Wave in DANS/PMMA Thin Film Waveguides显示文摘The broadband fluorescence guided-waves excited in DANS/PMMA polymer thin film waveguides by an Ar+laser beam were demonstrated in terms of the observation of mlines with colour array.Considering the high brightness of these m-lines observation,we assert that it is a kind of stimulated amplification of fluorescence guided-wave. | WANG Huitian DONG Fengzhong ZHANG Zhanxiang YE Peixian QIU Ling SHEN Jifeng FU Xingfa SHEN Yuquan | 1994 | Chinese Physics Letters1994，11，2： | 0 |
| 5 | Observation of Optical Bistability Hysteresis Loop with Surface Waves in Doped Polymer Film显示文摘Optical bistability hysteresis loop has been observed experiment ally with a setup using prism excitation of surface wave in a doped polymer thin film.A simple model has been developed to analyze its operation.The observed bistability hysteresis loop can be explained in terms of surface plasmon excitation and laser induced refractive index variations. | YE Peixian YU Zuhe ZHANG Zhanxiang SHEN Yuquan FU Xingfa | 1991 | Chinese Physics Letters1991，8，9： | 0 |
| 6 | Satellite detection of IR precursors using bi-angular advanced along-track scanning radiometer data:a case study of Yushu earthquake显示文摘The paper has developed and proposed a synthesis analysis method based on the robust satellite data analysis technique(RST) to detect seismic anomalies within the bi-angular advanced along-track scanning radiometer(AATSR) gridded brightness temperature(BT)data based on spatial/temporal continuity analysis. The proposed methods have been applied to analyze the Yushu(Qinghai, China) earthquake occurred on 14 th April 2010,and a full AATSR data-set of 8 years data from March2003 to May 2010 with longitude from 91°E to 101°E and latitude from 28°N to 38°N has been analyzed. Combining with the tectonic explanation of spatial and temporal continuity of the abnormal phenomena, the analyzed results indicate that the infrared radiation anomalies detected by the AATSR BT data with nadir view appear and enhance gradually along with the development and occurring of the earthquake, especially along the Ganzi-Yushu fault, Nu River fault and Jiali-Chayu fault; more infrared anomalies along the earthquake fault zone(Lancangjiang fault and Ning Karma Monastery-Deqin fault) are detected using the proposed synthesis analysis method, which can also characterize the activity of seismic faults more precisely. | Pan Xiong Xuhui Shen Xingfa Gu Qingyan Meng Yaxin Bi Liming Zhao Yanhua Zhao Yan Li Jianting Dong | 2015 | Earthquake Science2015，28，1： | 0 |
| 7 | Observation of Optical Bistabilities in a Doped Polymer Thin Film Quasi-waveguide显示文摘Optical bistability was observed and studied in the output of reflected beam as well as in that of m-lines in a doped polymer thin film quasi-waveguide.The physical origin was demonstrated to be the existence of a mode spectrum and the high third order nonlinearity of the polymer film.It was also observed for the first time that the intensity variation of the reflected beam and the m-line in the hysteresis loops are complementary to each other. | WANG Huitian DONG Fengzhong ZHANG Zhanxiang YE Peixian QIU Ling SHEN Jifeng FU Xingfa SHEN Yuquan | 1995 | Chinese Physics Letters1995，12，4： | 0 |
| 8 | Observation of Optical Bistability Hysteresis Loop with Surface Waves in Doped Polymer Film显示文摘Optical bistability hysteresis loop has been observed experimentally with a setup using prism excitation of surface wave in a doped polymer thin film.A simple model has been developed to analyze its operation.The observed bistability hysteresis loop can be explained in terms of surface plasmon excitation and laser induced refractive index variations. | YE Peixian YU Zuhe ZHANG Zhanxiang SHEN Yuquan FU Xingfa | 1991 | Chinese Physics Letters1991，8，6： | 0 |
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