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浏览/检索结果: 共30条，第1-10条 帮助 限定条件 发表日期：2015    内容类型：其他    专题：北京大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Analyzing the Spatial Scaling Bias of Rice Leaf Area Index From Hyperspectral Data Using Wavelet-Fractal Technique 其他 2015-01-01 Jiang, Jiale; Liu, Xiangnan; Liu, Chuanhao; Wu, Ling; Xia, Xiaopeng; Liu, Meiling; Du, Zhihong 收藏  |  浏览/下载：11/0  |  提交时间：2017/12/04 Hyperion data  leaf area index (LAI)  nonlinearity  scaling bias  spatial heterogeneity  wavelet-fractal technique  RADIATIVE-TRANSFER MODEL  REMOTE-SENSING DATA  VEGETATION INDEX  INVERSION  LAI  CHLOROPHYLL  REFLECTANCE  VALIDATION  IMAGERY  HETEROGENEITY   Texture Classification by Bit-plane Multifractal Spectrum and Bit-plane Barycentric Coordinates of Wavelet Coefficients 其他 2015-01-01 Shu-li WANG; Guan-xiang WANG 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/03 Texture classification  Wavelet transform  Multi-fractal spectrum  Bit plane  Barycentric coordinates  Texture classification  Wavelet transform  Multi-fractal spectrum  Bit plane  Barycentric coordinates   A flexible and transparent graphene based triboelectric nanogenerator 其他 2015-01-01 Shankaregowda, Smitha Ankanahalli; Nanjegowda, Chandrashekar Bananakere; Cheng, Xiaoliang; Shi, Mayue; Liu, Zhongfan; Zhang, Haixia 收藏  |  浏览/下载：9/0  |  提交时间：2017/12/03 Texture Classification by Bit-plane Multifractal Spectrum and Bit-plane Barycentric Coordinates of Wavelet Coefficients 其他 2015-01-01 Wang, Shu-li; Wang, Guan-xiang 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/03 Texture classification  Wavelet transform  Multi-fractal spectrum  Bit plane  Barycentric coordinates   Acute Effects on Cardio-Respiratory of Fine Particulate Exposure in low-level and high-level Exercisers: A Panel Study 其他 2015-01-01 Xi Chen; Wu Chen; Yanwen Wang; Tong Zhu 收藏  |  浏览/下载：7/0  |  提交时间：2017/12/03 PM2.5 Black carbon Aerobic exercise Cardio-Respiratory biomarkers   Neighborhood regression for edge-preserving image super-resolution 其他 2015-01-01 Li, Yanghao; Liu, Jiaying; Yang, Wenhan; Guo, Zongming 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03 Micromachined Cavity-based Bandpass Filter and Suspended Planar Slow-wave Structure for Vacuum-microelectronic Millimeter-wave/THz Microsystem Embedded in LTCC Packaging Substrates 其他 2015-01-01 Miao, Min; Fang, Runiu; Zhang, Xiaoqing; Ning, Biao; Mu, Fangqing; Li, Zhensong; Xiang, Wei; Jin, Yufeng 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/03 DESIGN   Ultra-Low Noise All Fiber Mode-Locked Laser 其他 2015-01-01 Zhang, Yaolin; Ren, Quansheng; Zhang, Shuangyou; Hou, Dong; Zhao, Jianye 收藏  |  浏览/下载：4/0  |  提交时间：2017/12/03 mode-locked laser  phase noise  timing jitter  frequency detuning  RING LASER  GENERATION  CONVERSION  JITTER   A Low-Power High-Speed 32/33 Prescaler Based on Novel Divide-by-4/5 Unit with Improved True Single-Phase Clock Logic 其他 2015-01-01 Jia, Song; Yan, Shilin; Wang, Yuan; Zhang, Ganggang 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/03 TSPC  prescaler  frequency divider   A 0.5-2 GHz High Frequency Selectivity RF Front-End with Series N-path Filter 其他 2015-01-01 Guo, Ying; Shen, Ling; Yang, Fan; Zheng, Yongan; Chen, Long; Zhang, Xing; Liao, Huailin 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03 RF front-end  series N-path filter  blocker tolerance  frequency selectivity  harmonic rejection  multi-band receiver  BANDPASS FILTER  CMOS