Thermal and Optical Properties of Cyanine Dye for High Density Digital Versatile Disc-Recordable (DVD-R)

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ｈｉｇｈ ｄｅｎｓｉｔｙｉｎｆｏｒｍａｔｉｏｎｓｔｏｒａｇｅｉｓａｎｉｍｐｏｒｔａｎｔｔｅｃｈｎｏｌｏｇｉｃａｌｏｂｊｅｃｔｉｖｅ.Ｔｏｉｎｃｒｅａｓｅｔｈｅｒｅｃｏｒｄｉｎｇｄｅｎｓｉｔｙｉｓｏｎｅｏｆｔｈｅｉｍｐｏｒｔａｎｔｓｕｂｊｅｃｔｓｉｎｔｈｅｃｕｒｒｅｎｔａｎｄｆｕｔｕｒｅｄｅｖｅｌｏｐｍｅｎｔｏｆｏｐｔｉｃａｌｓｔｏｒａｇｅｔｅｃｈｎｏｌｏｇｙ .Ｔｈｅｄｉｇｉｔａｌｖｅｒｓａｔｉｌｅｄｉｓｃ ｒｅｃｏｒｄａｂｌｅ (ＤＶＤ Ｒ)ｆｏｒｍａｔｈａｓｂｅｅｎｐｒ…     

液体折射率光电测量系统

本文介绍了一种光电液体折射率计的理论解析、测量原理、系统构成与实验结果,从理论研究与实验结果表明本折射率计有好的可行性。     

MULTI-LEVEL FILTER FOR INFRARED IMAGE PROCESSING

This paper presents a new multi-level filter algorithm and its corresponding VLSI architecture for infrared image processing. The algorithm eliminates the phenomena of splitting targets by inserting Gaussian pyramid processing. Owning three filter paths, the proposed filter VLSI architecture can enhance small targets with different size in infrared images. This architecture has been implemented using SMIC 0.35μm 4-layer CMOS technology. The test result shows that the filter chip not only effectively suppresses background, eliminates noise and enhances small targets in an infrared image, but also meets infrared image real-time processing requirement(5M ∼ 10M pixels/s). The implemented filter chip consists of 60,284 gates and 8K SRAM, operates at 50MHz.     

Filling Real Hypersurfaces by Pseudoholomorphic Discs

We study pseudoholomorphic discs with boundaries attached to a real hypersurface E in an almost complex manifold. We give sufficient conditions for filling a one-sided neighborhood of E by the discs.      

基于纠缠交换的多方多级量子密钥分配协议

提出了一种基于纠缠交换的多方多级量子密钥分配协议.构造了一种两方三级系统的完备正交归一化基，利用该正交归一化基和纠缠交换可以实现两方量子密钥分配.同时，三级可以推广到多级以及两方推广到多方，即可以实现基于纠缠交换的多方多级量子密钥分配.这样，利用纠缠交换和多级密钥分配可以极大地提高检测窃听的效率、密钥生成率以及信息容量. 关键词： 量子密钥分配 纠缠交换 多方 多级     

A remark on the symplectic blow-up in dimension 4

In this note, we prove that the symplectic blow-up or blow-down in the dimension 4 is rigid, i.e. the symplectic area of the divisor does not exceed the symplectic radius of the neighbourhood on which we do the blow-up or blow-down.Supported in part by the NSF of P. R. China and the Foundation of Chinese Educational Committee for Returned Scholars.     

光盘存储读出信道的实现

通过构建适合于硬件电路实现的读出信道数学模型以及对光存储系统中存在的噪声、抖晃和扰动的分析,在FPGA(Field programmable gate array)硬件平台上,实现了对任意二阶至四阶记录光盘读出RF(Radio frequency)信号的模拟实时连续输出。在信道模拟的硬件算法设计中,采用了四倍频的方法和基于ROM(Read-only memory)查找表的方法实现了100Mbit高速情况下的卷积运算。设计结果得到了逼真的网眼图,验证了模型的正确性,且已作为光盘系统后续信号处理模块的信源,加快了光盘系统研制开发的步伐。     

基于模糊数学和灰色理论的多层次综合评价方法及其应用

针对多层次指标体系的综合评价问题,在模糊综合评判方法的基础上,结合灰色理论,提出了一种新的定量综合评价方法—多层次模糊灰关联聚类分析综合评价方法.应用该方法对油气钻井技术进行综合评价,取得了满意的结果.     

关于无穷级拟亚纯映射的充满圆与Borel方向

该文证明了无穷级拟亚纯映射的充满圆与Borel方向的存在性。     

p-Bloch空间上的复合算子和加权复合算子

本文系统地讨论了单位圆中p-Bloch空间上复合算子T1,δ的有界性和紧性以及加权复合算子Tφ,δ的有界性,同时也在小p-Bloch空间上讨论了复合算子T1,φ的有界性问题.主要得到以下结论: (i)Tφ,δ是空间βp到βq的有界算子之充要条件; (ii)T1,φ是空间βp到βq的紧算子之充要条件; (iii)T1,φ是空间βp0到βq0的有界算子之充要条件等.从空间或算子上扩展了文[1,4]的相应结论.