In this paper a novel multicarrier modulation system called Complex Wavelet Packet Modulation (CWPM) has been proposed. It is based on using the Complex Wavelet
The high peak-to-average power ratio (PAPR) is one of the serious problems in the application of OFDM technology. In this paper, an improved partial transmit se
VisuShrink, ModineighShrink and NeighShrink are efficient image denoising algorithms based on the discrete wavelet transform (DWT). These methods have disadvant
目的:为探讨鼻翼软骨先天形态异常所致的鼻下部畸形美容整形治疗,其常见的临床表现是鼻尖园钝、低塌、鼻小柱较短、鼻梁低平。方法:1995年以来,26例鼻部美容整形的病人,根据
还有哪些四位数'6、7、8、5'是一个非常有趣的四位数,如果把它拆成'6、7'和'8、5'后,有两个与众不同的性质:6+7=8+5,6~2+7~2=85。具有上面性质的四
研究了影响胡杨离体快繁若干因素,选出最适合胡杨离体快繁的外植体为春季解除休眠的冬芽;启动培养基为MS+6BA0.1mg/L+NAA0.05mg/L,萌动率达75.4%;继代增殖培养基为MS+6BA0.1m
The interferogram of multiple-beam Fizeau fringe technique plays an important role to investigate the optical properties of fiber because this interferogram pro
<正> 一文学工作者该不该有使命感?目前存在着不同的看法和态度。有的说该有,有的说不必有;有的很积极,有的较淡漠。不同的看法和态度都有各自的理由,似乎很复杂。我认为实际上没有一个人会毫无某种使命感。如果毫无使命感,他为什么还要来搞文学创作或评论?他总有一个目标,一种向往,想说点什么,也希望有人来听他所说的,得到同情和共鸣。不管他自己承认不承认,自觉或不大自觉,实际上这就是他的使命,他在执行自己的使命。主张积极干预生活固然是一种使命,主张不必考虑别的,只