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项目在不同间隔时间呈现过程中的系列位置效应

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心理学报 1999年第2期31卷 162-168页

作者：吴艳红朱滢中国科学院心理研究所北京100101 北京大学心理系北京100871

以中国汉字为材料，考察不同中数比率（0.6,0.8和1.0）时，系列位置曲线不同部分性质的分化。结果说明，系列位置曲线不同部分的性质，是项目问隔时间和其时间变化的中数比率共同作用的结果，其中项目间隔时间变化的中数比率所起作用更... 详细信息

以中国汉字为材料，考察不同中数比率（0.6,0.8和1.0）时，系列位置曲线不同部分性质的分化。结果说明，系列位置曲线不同部分的性质，是项目问隔时间和其时间变化的中数比率共同作用的结果，其中项目间隔时间变化的中数比率所起作用更大。在项目呈现时间相同时，项目间隔时间长短，决定项目之间的辨别程度，也影响到对项目正确提取的百分数。

关键词：系列位置效应中数比率联想记忆绝对记忆记忆

A study on the sharp knee and fine structures of cosmic ray spectra

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Science China(Physics,Mechanics & Astronomy) 2010年第5期53卷 842-847页

作者： WANG Bo1,YUAN Qiang1,FAN Chao1,2,ZHANG JianLi1,HU HongBo1 & BI XiaoJun1 1 Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese academy of sciences,beijing 10004.,China 2 Department of Physics,Shandong {3.,Jinan 250100,China 1. Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China2. Department of Physics Shandong University Jinan 250100 China

The paper investigates the overall and detailed features of cosmic ray(CR) spectra in the knee region using the scenario of nuclei-photon interactions around the acceleration *** supernova remnants can be the physical realities of such kind of CR acceleration *** results show that the model can well explain the following problems simultaneously with one set of source parameters:the knee of CR spectra and the sharpness of the knee,the detailed irregular structures of CR spectra,the so-called"component B"of Galactic CRs,and the electron/positron excesses reported by recent *** coherent explanation serves as evidence that at least a portion of CRs might be accelerated at the sources similar to young supernova remnants,and one set of source parameters indicates that this portion mainly comes from standard sources or from a single source.

关键词： cosmic ray knee fine structures e+e-excesses "component B" single source

Fault management:analysis of fault location algorithm in optical network

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 23-28,97页

作者： ZHENG Yan-lei ,HUANG Shan-guo,ZHANG Xian,GU Wan-yi School of Telecommunication Engineering,beijing university of Posts and Telecommunications,beijing 100876,China [a]School of Telecommunication Engineering beijing university of Posts and Telecommunications beijing 100876 China

This article proposes a new fault location mechanism in optical network. In this mechanism, a network alarm packet format with time-stamp is introduced to implement fast restoration. In locating the fault, the existing schemes are usually complex and inaccessible when solving the multifailure location problem. For multifailures, the proposed mechanism using time-stamps is more efficient in locating the fault and decreasing computational complexity.

关键词： fault location alarming packet time-stamp optical network

4.Substituted-L-proline as Asymmetric Catalyst for the Michael Addition of Ketones to Nitro Olefins

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4-Substituted-L-proline as Asymmetric Catalyst for the Micha...

On the Linear Representations of Circle Expanding Maps

中国化学会第四届有机化学学术会议

作者： WANG, Yu SUN, Jian (Natural Products Research Center, Chengdu Institute of Biology, Chinese academy of sciences, Chengdu 61004.) (Chengdu Institute of Organic Chemistry, Chinese academy of sciences, Chengdu 61004.) ({4. School of Chinese academy of sciences, beijing 10004.)

＜正＞Although the catalysis of proline as asymmetric organocatalyst has been proven to be highly effective in quite a broad range of transformations, the proline catalyzed asymmetric Michael addition reactions were shown to give very low enantioselectivity. Recently, several catalysts derived from proline have been reported to be highly en-antioselective in the Michael additions of ketones to nitrostyrenes. The common feature of these catalysts is that the carboxylic acid function of proline was replaced with a functional group containing NH that has similar Bron-sted acidity to the former. Herein we report that proper modifications of proline in the 4.position without altering the carboxylic acid function led to a new type of proline-derived organocatalysts that exhibited drastically improved enatioselectivity compared to proline in the Michael addition of cyclohexanone to nitrostyrene.

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Acta Mathematica Sinica,English Series 1994年第2期10卷 202-208页

作者： Cui Guizhen Department of Mathematics Peking university beijing, 100871 China 1. Department of Mathematics Peking University 100871 Beijing China

In this paper, it is proved that the two real analytic expanding endomorphisms of the unit circle are equivalent if and only if they have equal eigenvalues along corresponding cycles. A sufficient and necessary condit... 详细信息

关键词： Expand maps Circles representations Real number If and only if Equivalent Unit circle Corresponding

A daptive Normal Image Coding Scheme Basedon DCT Spectrum Distribution and H-Order

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The Journal of China Universities of Posts and Telecommunications 1999年第2期6卷 22-27页

作者： FAN Shu-xing LIU Chun-yang(1.Vocational and Technical Teacher’s College, beijing United university, beijing, 100011, P.R. China, 2. CSSAR Centre for Space Scienceand Applied Research, Chinese {3. of {4. as Post-doctor, beijing 100011, PR. China) Vocational and Technical Teacher's College Beijing United University Beijing 100011 P.R. China CSSAR Centre for Space Science and Applied Research Chinese Academy of Sciences as Post-doctor Beijing 100011 PR. China

In this paper according to the results of DCT spectrum disfribution analysis. we propose an adaptivenormal image coding scheme and image pre treatment, which use multi-scale adaptive sub-blocks in h-order anddecompose direct current component Dc into both components. Redundancy in one of both components can beremoved by multi-direction in h-order, the other component can be quantified finitely in loss. with less influence onthe quality of the reconstructed image. A new method combining quart-tree and template matching is used to extractnon-zero data from the coefficient matrix,the ideal result has been achieved from the coding scheme. The newscheme is called ANQS (adaptive normal quantification scheme ). Experiments prove that ANQS is much betterthan JPEG in the same image. With ANQS excellent quality of reconstruction is obtained at data rate as low as 0.0625 bpp and their PSNR as high as 3..3. dB, respectively but JPEG method is only obtained at data rate: 0.180 bppand PSNR: 3.. 19 dB.

关键词： inage coding DCT DCT spectrum disgtribution Hilbert order

DETERMINATION OF ACTIVITY OF AI IN SOLID Cu-Al ALLOYS

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Acta Metallurgica Sinica(English Letters) 1989年第11期2卷 360-363页

作者： ZHANG Qianxiang, university of Science and Technologys beijing, beijing, China

Activities and activity coefficients of Al in solid Cu-AI alloys have been determined by means of solid electorlyte galvanic cells Al(a_1 , in alloy), Al_2O_3.| ZrO_2· Y_2O_3.| Ni, NiO and Al(a_1 , in alloy), Al_2O... 详细信息

关键词： Cu-Al alloy Al activity activity coefficient solid electrolyte galvanic cell

Effect of PKC pathway on G_1/S progression control in HeLa cells

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Chinese Science Bulletin 2000年第5期45卷 440-442页

作者： HU Jiang & LIU HuituDepartment of Biology, beijing Normal university, beijing 100080, China Correspondence should be addressed to Liu Huitu Department of Biology Beijing Normal University Beijing China

The effect of PKC activity on G1/S progression in HeLa cells has been studied. The result shows that (i) PKC activity alteration in G1 phase affects d/S progression in HeLa cells. it has been observed that G1/S progression is stimulated by PKC agonist TPA and inhibited by PKC inhibitor GF-109203.. (ii) The expression of c-myc and c-jun is stimulated by TPA and inhibited by GF-109203. treatment in early G1 phase. (iii) During G1/S progression, the expression of CyciinD1is stimulated by TPA treatment and inhibited by GF-109203. treatment. There is no effect on the expression of CDK4. it is likely that PKC pathway regulates G1/S progression through regulating the expression of some early response genes and engine molecules in HeLa cells.

关键词： PKC cell cycle early response gene engine molecules.

GIAHS:An Effective Approach to Agrobiodiversity Conservation

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GIAHS:An Effective Approach to Agrobiodiversity Conservation