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浏览/检索结果: 共4条，第1-4条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 On the ideal weights for WENO/WENO-like finite difference schemes for the first derivative, I 期刊论文 INTERNATIONAL JOURNAL OF MODERN PHYSICS C, 2020, 卷号: 31, 期号: 7, 页码: 12 作者:  Kang J(康健);  Li XL(李新亮) 收藏  |  浏览/下载：16/0  |  提交时间：2020/09/07 Finite difference  weighted essentially non-oscillatory  ideal weights  proof   Study of tunnel surrounding rock classification based on rough set and ideal point method 期刊论文 Yantu Lixue/Rock and Soil Mechanics, 2011, 卷号: 32, 期号: SUPPL. 1, 页码: 171-175 作者:  Zhang, Le-Wen;  Qiu, Dao-Hong;  Li, Shu-Cai;  Zhang, De-Yong 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/23 Ideal point method  Rough set  Surrounding rock classification  Weights   Higher weights for codes over rings 期刊论文 Applicable Algebra in Engineering, Communications and Computing, 2011, 卷号: 22, 期号: 2, 页码: 113-135 作者:  Dougherty, Steven T.*;  Han, Sunghyu;  Liu, Hongwei 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/23 Higher weights  Finite chain rings  Finite principal ideal rings   Integrated mach-zehnder micro-interferometer for gas trace remote sensing (EI CONFERENCE) 会议论文 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China Chiarini M.; Bentini G. G.; Bianconi M.; Cerutti A.; Pennestri G.; Wang P.; She L.; Mazzoldi P.; Sada C. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 The realisation process and the preliminary tests on the performances of an integrated Mach-Zehnder Interferometer on LiNbO3 (Lithium Niobate) substrate is presented. The microsystem has been obtained by using medium mass Ion Implantation on X-cut Lithium Niobate crystals. The interferometer is formed by integrated optical channel waveguides: the phase shift between the two optical paths has been obtained  1mm 2 cross section and weights a few grams. The power consumption is in the milliwatt range. In the present work results obtained in the spectral window (0.4m-1.1m) will be presented. The performance of the device  without moving parts  evaluated on standard radiation sources  by applying a suitable electric field. The whole device is 60mm long  demonstrates that a spectral resolution better than 0.3nm can be obtained on 400nm spectral windows. The Micro-interferometer has been tested in laboratory with a calibrated cell containing NO2 gas and has demonstrated sensitivity in the ppb range if suitable optical paths are used. Its reduced dimensions and weights make these micro-systems ideal for a wide range of applications  has a 0.57times  spanning from Space Technology  Earth observation for Environment monitoring  to Safety and Security applications.