独立·反叛·狂欢——当代中国摇滚文化的审美研究

由于中国特殊的文化、政治、经济环境,当代中国摇滚文化表现出不同于西方的特点,即介于官方（严肃或者精英音乐）与市场（流行音乐）之间的一种独立性。中国摇滚文化的审美性正是建立在这种独立性之上,在反叛和狂欢这两个特性上表现了一些不同于西方的中国特色。     

A blind watermarking algorithm resisting to geometric transforms based on SVD

A new watermarking algorithm resisting to geometric transformation based on singular value decomposition(SVD) in logarithm polar coordinate is proposed.The log-polar mapping(LPM) is used to resist rotation and scaling attacks,and the odd-even quantization algorithm is used to embed watermark so it can be extracted without the original host image.The experiments show that the proposed algorithm not only resists various geometric attacks but also is robust enough to the common signal processing.     

Phase field simulation of the 180° domain-switching process in PbTiO<Subscript>3</Subscript> single crystal under an antiparallel electric field

The process of 180° domain switching in PbTiO₃ single crystal under an antiparallel electric field was investigated by the three-dimensional phase field simulation, especially the effect of electric field on the type and duration of domain switching. It is found that the polarization reversal of domains takes place under an antiparallel electric field in PbTiO₃ single crystal. The results of the phase field simulation indicate that there is only 90° domain switching under a weak electric field. With the rise of the electric field, 180° domain switching appears. If the electric field is strengthened further, 90° domain switching disappears and the duration of domain switching is shortened.     

A novel data embedding method for H.264 stereo video codec with joint prediction scheme

It is important to reduce data redundancy of stereo video in practical applications. In this paper,first,a data embedding method for stereo video(DEMSV) is investigated by embedding the encoding data into the reference frame to encode stereo video. It can use only one channel to transfer all the video data and the receiver can choose a monocular video decoder or stereo video decoder adaptively. Then,introducing the joint prediction scheme in the coding process of DEMSV,we propose a novel data embedding meth...     

武汉城市圈城市体系等级规模结构研究

通过对2002~2007年武汉城市圈城市体系等级规模的首位比、首位度以及位序-规模现状与变化趋势研究,分析了武汉城市圈城市体系的等级规模的结构特点.提出未来武汉城市圈城市体系发展的相应建议.     

Controllable stereoselective synthesis of pyrano[3,2-<Emphasis Type="Italic">c</Emphasis>]quinolines by lanthanide halides catalyzed aza-Diels-Alder reactions

An efficient method for the synthesis of tetrahydroquinoline derivatives via lanthanide halides catalyzed domino reactions of arylamines with dihydropyran is described. Either the cis or the trans isomer can be obtained as the major product in good yield by changing the catalyst and reaction conditions.     

滇东民族地区农村纠纷行政解决方式调查研究——以罗平县鲁布革乡、富源县古敢乡为例

作为多元化纠纷解决机制的主要组成部分,行政解决方式能够有效避免司法的先天劣势,也与我国传统乡民普遍较为看重纠纷解决者权力背景的心理契合。针对滇东少数民族地区的实际,在采用行政方式解决纠纷的过程中,应构建"四位一体"的纠纷解决模式,完善公安派出所、乡镇政府的纠纷解决功能,重视民族风俗习惯与制定法的调适。     

Giulio Racah and theoretical physics in Jerusalem

The present article considers Giulio Racah’s contributions to general physical theory and his establishment of theoretical physics as a discipline in Israel. Racah developed mathematical methods that are based on tensor operators and continuous groups. These methods revolutionized spectroscopy. Currently, these are essential research tools in atomic, nuclear and elementary particle physics. He himself applied them to modernizing theoretical atomic spectroscopy. Racah laid the foundations of theoretical physics in Israel. He educated several generations of Israeli physicists, and put Israel on the world map of physics.