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浏览/检索结果: 共8条，第1-8条 帮助 限定条件 发表日期：2014    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 Clustering Urban Multifunctional Landscapes Using the Self-Organizing Feature Map Neural Network Model 期刊论文 2014 Gao, Yang; Feng, Zhe; Wang, Yang; Liu, Jin-Long; Li, Shuang-Cheng; Zhu, Yu-Kun 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/13 Landscaping  Urban development  Land use  China  Multifunctional landscape  SOFM model  Urban land use  Shenzhen  LAND-USE  ECOSYSTEM SERVICES  CHINA  REGIONALIZATION  GROWTH  ECOLOGY  SYSTEM  SCALE  URBANIZATION  BIODIVERSITY   Xser@QALD-4: Answering natural language questions via phrasal semantic parsing 其他 2014-01-01 Xu, Kun; Feng, Yansong; Zhao, Dongyan 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/17 Compact Bidirectional Metallic-Dielectric-Air Polarization Splitter Based on a Cascaded Grating 期刊论文 ieee photonics technology letters, 2014 Li, Kun; Xiao, Feng; Lu, Fan; Xu, Anshi 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/10 Engineered photonic nanostructures  gratings  surface waves  metal-dielectric-air waveguide  TRANSMISSION  COUPLER  LIGHT   Theory and Experiment of a W-Band Tunable Gyrotron Oscillator 期刊论文 ieee电子器件汇刊, 2014 Du, Chao-Hai; Qi, Xiang-Bo; Liu, Pu-Kun; Chang, Tsun-Hsu; Xu, Shou-Xi; Geng, Zhi-Hui; Hao, Bao-Liang; Xiao, Liu; Liu, Gao-Feng; Li, Zheng-Di; Shi, Shao-Hui; Wang, Hu 收藏  |  浏览/下载：6/0  |  提交时间：2015/11/10 Broadband tuning  electron cyclotron maser  gyrotron  instability competition  DYNAMIC NUCLEAR-POLARIZATION  BACKWARD-WAVE OSCILLATORS  HIGH-POWER  GHZ  GUIDE  OPERATION  BWO  GUN   Experiment and Simulation of a W-Band CW 30 kW Low-Voltage Conventional Gyrotron 期刊论文 ieee电子器件汇刊, 2014 Geng, Zhi Hui; Su, Yi Nong; Liu, Pu Kun; Xu, Shou Xi; Gu, Wei; Liu, Gao Feng; Du, Chao Hai; Wang, Hu 收藏  |  浏览/下载：10/0  |  提交时间：2015/11/11 CW  gyrotron  low-voltage  simulation  W-band   Simulation of a diode type magnetron injection gun for a W-band CW gyrotron 其他 2014-01-01 Geng, Zhi-Hui; Su, Yi-Nong; Liu, Pu-Kun; Zhang, Shi-Chang; Xu, Shou-Xi; Hou, Xiao-Wan; Xue, Qian-Zhong; Liu, Gao-Feng; Gu, Wei 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/17 Compact plasmonic dichroic splitting with high splitting ratio based on a cascaded-grating structure 期刊论文 journal of the optical society of america b optical physics, 2014 Li, Kun; Xiao, Feng; Lu, Fan; Liu, Dalin; Alameh, Kamal; Xu, Anshi 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/13 SURFACE-PLASMONS  WAVE-GUIDE  SLIT  EFFICIENT  APERTURE  OPTICS   Ultra-broadband wide-angle unidirectional plasmonic coupler based on joint effects of plasmonic critical angles and subwavelength metallic gratings 期刊论文 光学通讯, 2014 Lu, Fan; Xiao, Feng; Li, Kun; Xu, Anshi 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/13 OPTICAL-TRANSMISSION  SURFACE-PLASMONS  EFFICIENT  LENGTH  SLIT