中国科学院机构知识库网格系统: 检索

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	Regularity of rural settlement changes driven by rapid urbanization in North China over the three decades 期刊论文 OAI收割 SCIENCE BULLETIN, 2023, 卷号: 68, 期号: 18, 页码: 2115-2124 作者: Liu, Yansui; Ou, Cong; Li, Yurui; Zhang, Liqiang; He, Jianhua \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2023/11/06 Rural settlement changes Rapid urbanization Cost-effective approach Rural areal system Beijing-Tianjin-Hebei region
	Land use optimization for sustainable development of mountain regions of western Serbia 期刊论文 OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 7, 页码: 1471-1480 作者: Vulevic, Tijana; Todosijevic, Mirjana; Dragovic, Nada; Zlatic, Miodrag \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2020/09/29 Cost-benefit analysis Linear programming Land use optimization Mountain region Soil erosion
	Development and techno-economic analysis of small modular nuclear reactor and desalination system across Middle East and North Africa region 期刊论文 OAI收割 DESALINATION, 2017, 卷号: 406, 期号: 无, 页码: 51-59 作者: Khan, Salah Ud-Din; Khan, Shahab Ud-Din; Haider, Sajjad; El-Leathy, Abdelrahman; Rana, Usman Ali 收藏 \| 浏览/下载：29/0 \| 提交时间：2018/05/02 Nuclear Reactors Nuclear Desalination Systems Mena Region Kingdom Of Saudi Arabia Case Coupled Nuclear Desalination System Theoretical-computational Techniques Cost Analysis
	Fine-structured object segmentation via neighborhood propagation 期刊论文 OAI收割 PATTERN RECOGNITION, 2016, 卷号: 60, 期号: null, 页码: 130-144 作者: Gong, Yongchao; Xiang, Shiming; Pan, Chunhong \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2016/12/26 Fine-structured Object Segmentation Label Propagation Affinity Graph Local And nonLocal Neighborhood Region Cost
	FINE-STRUCTURED OBJECT SEGMENTATION VIA LOCAL AND NONLOCAL NEIGHBORHOOD PROPAGATION 会议论文 OAI收割 Québec City, Canada, 2015-9-27 ~ 2015-9-30 作者: Gong, Yongchao; Xiang, Shiming; Wang, Lingfeng; Pan, Chunhong \| 收藏 \| 浏览/下载：17/0 \| 提交时间：2017/05/09 Fine-structured (Fs) Object Segmentation Affinity Graph Local And nonLocal Neighborhood System Region Cost Closed-form Solution
	Agricultural land use intensity and its determinants: A case study in Taibus Banner, Inner Mongolia, China SCI/SSCI论文 OAI收割 2015 作者: Hao H. G.; Li, X. B.; Tan, M. H.; Zhang, J. P.; Zhang, H. Y. 收藏 \| 浏览/下载：35/0 \| 提交时间：2015/12/09 agricultural land use intensity labor intensity capital intensity opportunity cost of farm workers Taibus Banner off-farm work grain production nonfarm income labor migration policy communities environment pattern region
	Development and radiance calibration of three-waveband camera (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photonics and Optoelectronics, SOPO 2010, June 19, 2010 - June 21, 2010, Chengdu, China 作者: Wang J.; Liu Y.; Liu Y.; Sun Q.; Liu Y. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 An imaging system with three-waveband sharing one lens and an area CCD was developed. By rotating different filters into the beam path the required waveband was selected. The optical system which can image in ultraviolet visible and near infrared region was designed and the signal collecting system was integrated. The optical design and system integration have some advantages such as low cost small size and light in weight. To obtain a high imaging quality the radiation calibration is carried out in order to establish the relation between the average grey level of output image and the input radiance from the integrating sphere. According to the calibration data in experiments the radiation dynamic range and the best working point of the system are determined. The experiment result shows that the dynamic range of the image system is maximal when the exposure time is 8ms in ultraviolet 0.5ms in visible and 0.125ms in near infrared region. 2010 IEEE.
	INS's error compensation on the base of the celestial theodolite (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China 作者: Guo L.-H.; Zhao H.-B. 收藏 \| 浏览/下载：69/0 \| 提交时间：2013/03/25 In recent years there has been a major upsurge of interest in the integrated inertial navigation system (INS)/celestial navigation system (CNS) as a cost-effective way of providing accurate and reliable navigation aid for civil and military vehicles (ships aircrafts land vehicles and so on). One of the disadvantages of INS is its errors will grow unbounded. The CNS can be used to improve position estimation resulting from INS measurement. This paper describes the design of this. An error model developed earlier is used for CNS/INS filter (Kalman filter) mechanization. In CNS celestial theodolite acquires an image of the sky recognize the most brilliant stars in the image creates with them a "constellation" and searches for this pattern in an on board star catalogue of the observed region to get the precise position and attitude information of vehicles. The Kalman filter method is used to fuse measurement from the system. We can use this information to compensate INS's error. The tests carry out with this system show that system will get accurate navigation information.
	Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文 OAI收割 2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China 作者: Zhang Y.; Zhang X.; Zhang X.; Zhang X.; Wang F. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters (b) fiber gratings and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2 3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers which are very attractive components for WDM systems because of their great flexibility in filter design[4 5]. Basically an AWG is an optical spectrograph built in planar waveguide technique. Typically AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs however show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK) its package technology and environmental stability were also discussed. 2005 IEEE.