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STRONG APPROXIMATION FOR PERTURBED EMPIRICAL PROCESSES

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Systems Science and Mathematical Sciences 1996年第4期9卷 345-353页

作者： ZHOU Yong(Department of Probability and Statistics, Peking university, beijing 100871,{3.) 北京大学概率统计系北京

ＳＴＲＯＮＧＡＰＰＲＯＸＩＭＡＴＩＯＮＦＯＲＰＥＲＴＵＲＢＥＤＥＭＰＩＲＩＣＡＬＰＲＯＣＥＳＳＥＳ￥ＺＨＯＵＹｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＰｒｏｂａｂｉｌｉｔｙａｎｄＳｔａｔｉｓｔｉｃｓ，ＰｅｋｉｎｇＵｎｉｖｅｒ... 详细信息

ＳＴＲＯＮＧＡＰＰＲＯＸＩＭＡＴＩＯＮＦＯＲＰＥＲＴＵＲＢＥＤＥＭＰＩＲＩＣＡＬＰＲＯＣＥＳＳＥＳ￥ＺＨＯＵＹｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＰｒｏｂａｂｉｌｉｔｙａｎｄＳｔａｔｉｓｔｉｃｓ，ＰｅｋｉｎｇＵｎｉｖｅｒｓｉｔｙ，Ｂｅｉｊｉｎｇ１００８７...

关键词： Strong approximation empirical process Brownian bridge Kiefer process KerneLsin’oothing.

Knockdown of CD146 reduces the migration and proliferation of human endothelial cells

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Cell Research 2006年第03期16卷 313-318页

作者： Yanyong Kang~(1,3. Fengcai Wang~(1,2) Jing Feng~1 Dongling Yang~1 Xu Yang~3.Xiyun Yan~11 National Laboratory of Biomacromolecules,Institute of Biophysics,Chinese Academy of Science beijing 100101,china 2 {3. Department,Anyang teacher's College,Anyang 455000,china 3.College of life Science,Central china Normal university,Wuhan 43.079,china NationalLaboratoryofBiomacromolecules InstituteofBiophysicsChineseAcademyofScienceBeijing100101China chemistryDepartment Anyangteacher'sCollegeAnyang455000China

Our previous study has demonstrated that CD 146 molecule is a biomarker on vascular endothelium,which is involvedin angiogenesis and tumor *** the mechanism behind is not *** we have for the first time devel-oped a novel CD146 blockade system using CD146 siRNA to study its function on endothelial *** data showedthat CD146 siRNA specifically blocked the expression of CD146 on both mRNA and protein levels,leading to thesignificant suppression of HUVEC proliferation,adhesion and *** results demonstrate that CD146 playsa key role in vascular endothelial cell activity and angiogenesis,and CD146 siRNA can be used as a new inhibitor foranti-angiogenesis therapy.

关键词： small interfering RNA adhesion molecule CD 146 vascular endothelial cell

Asymptotic Behavior of Slender Flying Vehicle with a Finite Controller

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Systems Science and Systems Engineering 1996年第2期6卷 246-249页

作者： li Shengjia(Department of Mathematics, Shanxi university, Taiyuan, china, 03.006)YU Jiangyuan(Istitute of information and Control, {3. , china, 10003.)

In this paper, it is proved that there exists a finite controller such that the aymptoticbehavior of a slender space vehicle with the effect of aerodynamic power exponentially stablizes to atable state.

关键词： beam equation finite control exponential stability.

Adjoint method for the optimum planning of industrial pollutant sources

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Science china Earth Sciences 2005年第8期48卷 1270-1279页

作者： liU Feng1,2, HU Fei2 & ZHU Jiang2 1. College of Environmental Sciences, Peking university, beijing 100871,{3. 2. LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, beijing 100029,{3. 1. College of Environmental Sciences Peking University 100871 Beijing China 2. LAPC Institute of Atmospheric Physics Chinese Academy of Sciences 100029 Beijing China

The optimum planning of industrial pollutant sources, which optimizes the economic object without violating environmental constraints, is an important and hard task to be conquered. In this paper, an adjoint method is developed to solve the problem. The penalty function is in-troduced to deal with the environmental inequality constraints, and Lagrange function is con-structed to derive the adjoint equation and the gradient of the object function. In this means, the gradient of the object function can be calculated by solving the adjoint equation, and the infor-mation from the gradient is used to make the object function descend and approach to an optimal solution after some iterations. A two-dimensional, simplified model is used for numerical experi-ments. The theoretical derivations are verified by the results of the experiments. Furthermore, the adjoint method is shown to be of excellent convergence and efficiency, which is adaptive to the fast development of air quality numerical models and super computers.

关键词： optimum planning, industrial pollutant sources, adjoint equation, penalty function, gradient.

Forward Calculation of 2-D and 3.D Structures with a Cover by the Boundary Element Method while Using Electrical Methods

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Journal of Earth Science 1990年第1期9卷 87-96页

作者： Fu liangkui Chen FujiDepartment of Geophysics, china university of Geosciences, {3. 100083

This paper develops the boundary element method, the authors employ two-layered earth Green 's functions as the weighting functions of residual and derive boundary integral equations. The forward problems of point sources on 2 - D and 3.D structures with an influencing cover are solved by this method. The results show that this method markedly improves the original boundary element method. The features of the improved method are greater numerical accuracy and much smaller systems of equations and thus considerable savings for the storage capacity of computers, allowing us to solve the above problems with only ordinary microcomputers. The results in this paper extend the scope of applying the boundary element method while using electrical methods for geophysical prospecting.

关键词： boundary element Green's function cover forward calculation

Application of geophysical well logs in solving geologic issues:Past,present and future prospect

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Geoscience Frontiers 2024年第3期15卷 85-118页

作者： Jin Lai Yang Su Lu Xiao Fei Zhao Tianyu Bai Yuhang li Hongbin li Yuyue Huang Guiwen Wang Ziqiang Qin National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Department of Petroleum Engineering University of WyomingLaramieWY 82071USA

Geophysical well logs are widely used in geological fields,however,there are considerable incompatibilities existing in solving geological issues using well log *** review critically fills the gaps between geology and geophysical well logs,as assessed from peer reviewed papers and from the authors’personal experiences,in the particular goal of solving geological issues using geophysical well *** origin and history of geophysical logging are *** follows a review of the state of knowledge for geophysical well logs in terms of type of specifications,vertical resolution,depth of investigations and demonstrated *** the current status and advances in applications of geophysical well logs in fields of structural geology,sedimentary geology and petroleum geology are *** logs are used in structural and sedimentary geology in terms of structure detection,in situ stress evaluation,sedimentary characterization,sequence stratigraphy division and fracture *** logs can also be applied in petroleum geology fields of optimizing sweet spots for hydraulic fracturing in unconventional oil and gas *** well logs are extending their application in other fields of geosciences,and geological issues will be efficiently solved via well logs with the improvements of advanced well log *** work is required in order to improve accuracy and diminish uncertainties by introducing artificial *** review provides a systematic and clear descriptions of the applications of geophysical well log data along with examples of how the data is displayed and processed for solving geologic problems.

关键词： Geophysical well logs Sequence stratigraphy Source rock Unconventional oil and gas resources Artificial intelligence

Analysis of cDNA sequence,protein structure and expression of parotid secretory protein in pig

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Chinese Science Bulletin 2003年第13期48卷 1358-1363页

作者： YIN Haifang, FAN Baoliang, ZHAO Zhihui, liU Zhaoliang, FEI Jing & li Ning State Key Laboratory for Agrobiotechnology, china Agricultural university, beijing 100094, china Correspondence should be addressed to li Ning (e-mail: ninglbau@ ***) State Key Laboratory for Agrobiotechnology China Agricultural University China

Parotid secretory protein (PSP) secreted abundantly in saliva, whose function is related with the anti-bacterial effect. The PSP cDNA has been isolated from pig parotid glands by 3. and 5′ rapid amplification of cDNA end (RACE), based on the conserved signal peptide region among the known mammalian PSP. The result of homologous comparison shows that pig PSP and human PSP shares the high identity at the level of the primary, secondary and tertiary protein st{3.cture. A search for functionally significant protein motifs revealed a unique amino acid sequence pattern consisting of the residues Leu-X(6)-Leu-X(6)-Leu- X(7)-Leu-X(6)-Leu-X(6)-Leu near the amino-terminal portion of the protein, which is important to its function. RT-PCR, Dot blot and Northern blot analysis demonstrated that PSP was strongly expressed in parotid glands, but not in other tissues.

关键词：基因序列腮腺分泌蛋白猪 PSP 唾腺

INTRA-ION PAIR ELECTRON TRANSFER OF PHOTOEXCITED METHYLENE BLUE BORATE

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Chinese Chemical Letters 1995年第7期6卷 597-600页

作者： Xiu Zhi WANG Han Qing CHEN Er Jian WANG (Institute of Photographic chemistry, Academia Sinica, beijing 100101National Laboratory of Applied Organic chemistry, Lanzhou university, Lanzhou,73.000) Acad Sinica Inst Photog Chem Beijing 100101 Peoples R China Lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

The photochemical reaction of methylene blue (n-butyltriphenyl) borate, MBRBPh3.was examined. The ultrafast quenching rate and large negative value of Delta G indicated that the intra-ion pair ET plays an important role in photoreaction of MBRBPh3. The sequent boron- carbon bond cleavage of butyltriphenylboranyl radical intermediate was found by GC-MS and photo-CIDNP studies.

关键词： ION INTRA-ION PAIR ELECTRON TRANSFER OF PHOTOEXCITED METHYLENE BLUE BORATE

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面向图像拼接检测的自适应残差算法

中国图象图形学报 2024年第2期29卷 419-429页

作者：张玲穆文鹏陈北京南京信息工程大学数字取证教育部工程研究中心南京210044 南京信息工程大学江苏省大气环境与装备技术协同创新中心南京210044 南京信息工程大学计算机学院南京210044

目的恶意的图像拼接篡改给名誉、法律、政治等带来一系列的挑战,而现有的图像拼接检测算法通常采用参数固定的高通滤波器提取滤波特征进行预处理,没有考虑图像之间的差异。方法本文设计自适应残差模块(adaptive residuals module, ARM... 详细信息

目的恶意的图像拼接篡改给名誉、法律、政治等带来一系列的挑战,而现有的图像拼接检测算法通常采用参数固定的高通滤波器提取滤波特征进行预处理,没有考虑图像之间的差异。方法本文设计自适应残差模块(adaptive residuals module, ARM)凸显拼接篡改痕迹,将卷积运算后的残差多次拼接,且每次拼接后再利用注意力机制实现通道间的非线性交互。然后,使用通道注意力SE(squeeze and excitation)模块以减少由ARM提取残差特征产生的通道之间信息冗余,并以在图像分类领域获得卓越性能的EfficientNet(high-efficiency network)为骨干网络,提出一种新的图像拼接检测算法。结果实验结果表明,所提算法在CASIA I(CASIA image tampering detection evaluation database),CASIA II,COLUMBIA COLOR,NIST16(NIST special database 16)和FaceForensic++这5个公开数据集上分别取得98.95%,98.88%,100%,100%,88.20%的检测准确率,获得比现有算法更高的准确率。提出的ARM将骨干网络EfficientNet在CASIA II数据集的准确率提高了3.94%以上。结论提出的基于自适应残差的图像拼接检测算法充分考虑图像之间的差异,凸显篡改区域与未篡改区域之间的区别,并获得更好的拼接检测结果。

关键词：图像取证深度神经网络图像拼接检测自适应残差 EfficientNet