机构

• 长春光学精密机械与物... [2]
• 地质与地球物理研究所 [1]
• 生态环境研究中心 [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [2]
• 期刊论文 [2]

发表日期

• 2018 [2]
• 2008 [1]
• 2005 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Tectonic controls on Ni and Cu contents of primary mantle-derived magmas for the formation of magmatic sulfide deposits 期刊论文  OAI收割 AMERICAN MINERALOGIST, 2018, 卷号: 103, 期号: 10, 页码: 1545-1567 作者:  Yao, Zhuosen;  Qin, Kezhang;  Mungall, James E.   |  收藏  |  浏览/下载：58/0  |  提交时间：2018/12/11 Mantle partial melting  Ni and Cu partitioning behaviors  tectonic settings  ore potential of primary magma  forward model  Planetary Processes as Revealed by Sulfides and Chalcophile Elements   Arbuscular mycorrhizal fungi alleviate arsenic toxicity to Medicago sativa by influencing arsenic speciation and partitioning 期刊论文  OAI收割 ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2018, 卷号: 157, 页码: 235-243 作者:  Chen, Baodong;  Li, Jinglong;  Sun, Yuqing;  Jiang, Xuelian;  Zhang, Xin   |  收藏  |  浏览/下载：48/0  |  提交时间：2019/06/17 Arbuscular mycorrhiza  Medicago sativa  P acquisition  As speciation  As partitioning  Gene expression   Wavelet-based contourlet coding using SPECK algorithm (EI CONFERENCE) 会议论文  OAI收割 2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008, Beijing, China Xiu-Wei T.; Xi-Feng Z.; Tie-Fu D. 收藏  |  浏览/下载：55/0  |  提交时间：2013/03/25 We proposed a new still image compression algorithm called CSPECK witch was constructed by the wavelet-based contourlet transform (WBCT) and set partitioning embedded block coding (SPECK). In the WBCT  the high frequency sub-band decomposed by the wavelet transform was further decomposed into multiple directional sub-bands by directional filter bank so as to explain the edge and texture of the image more sparsely. The SPECK algorithm exhibits lower complexity and more efficient compression ratio than SPIHT based on WBCT. Experimental results demonstrate that the proposed method is efficient in coding images that possess mostly textures and contours. The simulation results also show that this new coding algorithm increases the PSNR over CSPIHT. 2008 IEEE.   Image compression based on biorthogonal wavelet transform (EI CONFERENCE) 会议论文  OAI收割 ISCIT 2005 - International Symposium on Communications and Information Technologies 2005, October 12, 2005 - October 14, 2005, Beijing, China 作者:  Gao Y.;  Liu H.;  Liu H.;  Liu H. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 A method for image compression of biorthogonal wavelet transform based on lifting scheme with SPIHT (Set Partitioning In Hierachical Trees) is proposed in this paper. Wavelet transform affords wide space for image coding algorithms because of its excellent space-frequency localization characterizations. The compact supported  symmetrical and biorthogonal wavelet has linear phase  so it is applied on image compression area widely. The lifting scheme is an efficient method for constructing the wavelet filter after multiresolution. Under the condition of biorthogonal  biorthogonal wavelet base can be constructed freely according to the wavelet performance. And it can quicken the implementation speed of the wavelet transform. Analyzing the algorithm of lifting scheme is applying for constructing biorthogonal wavelet. Experimental results indicate that the method of the biorthogonal wavelet that has good performances with SPIHT is applying for image compression  so as image synthesis performs well. 2005 IEEE.