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	A quantitative scale-setting approach for building multi-scale spatial databases SCI/SSCI论文 OAI收割 2009 作者: Lu F. 收藏 \| 浏览/下载：21/0 \| 提交时间：2012/06/08 Spatial database Multi-scale database Visualization Level of detail vector map data transmission model
	Lossless wavelet compression on medical image (EI CONFERENCE) 会议论文 OAI收割 4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China 作者: Liu H.; Liu H.; Liu H. 收藏 \| 浏览/下载：53/0 \| 提交时间：2013/03/25 An increasing number of medical imagery is created directly in digital form. Such as Clinical image Archiving and Communication Systems (PACS). as well as telemedicine networks require the storage and transmission of this huge amount of medical image data. Efficient compression of these data is crucial. Several lossless and lossy techniques for the compression of the data have been proposed. Lossless techniques allow exact reconstruction of the original imagery while lossy techniques aim to achieve high compression ratios by allowing some acceptable degradation in the image. Lossless compression does not degrade the image thus facilitating accurate diagnosis of course at the expense of higher bit rates i.e. lower compression ratios. Various methods both for lossy (irreversible) and lossless (reversible) image compression are proposed in the literature. The recent advances in the lossy compression techniques include different methods such as vector quantization wavelet coding neural networks and fractal coding. Although these methods can achieve high compression ratios (of the order 50:1 or even more) they do not allow reconstructing exactly the original version of the input data. Lossless compression techniques permit the perfect reconstruction of the original image but the achievable compression ratios are only of the order 2:1 up to 4:1. In our paper we use a kind of lifting scheme to generate truly loss-less non-linear integer-to-integer wavelet transforms. At the same time we exploit the coding algorithm producing an embedded code has the property that the bits in the bit stream are generated in order of importance so that all the low rate codes are included at the beginning of the bit stream. Typically the encoding process stops when the target bit rate is met. Similarly the decoder can interrupt the decoding process at any point in the bil stream and still reconstruct the image. Therefore a compression scheme generating an embedded code can start sending over the network the coarser version of the image first and continues with the progressive transmission of the refinement details. Experimental results show that our method can get a perfect performance in compression ratio and reconstructive image.
	Ectopic expression of the spike protein of Rice Ragged Stunt Oryzavirus in transgenic rice plants inhibits transmission of the virus to insects 期刊论文 OAI收割 MOLECULAR BREEDING, 2003, 卷号: 11, 期号: 4, 页码: 295-301 作者: Shao, CG; Wu, JH; Zhou, GY; Sun, G; Peng, BZ 收藏 \| 浏览/下载：22/0 \| 提交时间：2015/07/22 RRSV transgenic rice vector transmission viral spike protein
	DYNAMICAL SIMULATIONS OF DIFFRACTION CONTRAST IMAGES OF STRAIGHT DISLOCATIONS IN ICOSAHEDRAL QUASI-CRYSTALS 期刊论文 OAI收割 PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1994, 卷号: 70, 期号: 4, 页码: 577 WANG, ZG; WANG, R; FENG, JL 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/09/17 TRANSMISSION-ELECTRON-MICROSCOPY DECAGONAL QUASI-CRYSTAL BURGERS VECTOR ELASTICITY THEORY CU PHASE LOOPS ALLOY