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Lipschitz and Total-Variational Regularization for Blind Deconvolution

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Communications in Computational Physics 2008年第6期4卷 195-206页

作者： yu-mei huang Michael K.Ng Centre for Mathematical Imaging and Vision and Department of Mathematics Hong Kong Baptist UniversityKowloon TongHong Kong. Department of Mathematics Lanzhou UniversityGansuChina.

In[3],Chan and Wong proposed to use total variational regularization for both images and point spread functions in blind *** experimental results show that the detail of the restored images cannot be *** this paper,we consider images in Lipschitz spaces,and propose to use Lipschitz regularization for images and total variational regularization for point spread functions in blind *** experimental results show that such combination of Lipschitz and total variational regularization methods can recover both images and point spread functions quite well.

关键词： Lipschitz regularization total variational regularization blind deconvolution texture Poisson singular integral alternating iterative algorithm.

BLOCK-TRIANGULAR PRECONDITIONERS FOR SYSTEMS ARISING FROM EDGE-PRESERVING IMAGE RESTORATION

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Journal of Computational Mathematics 2010年第6期28卷 848-863页

作者： Zhong-Zhi Bai yu-mei huang Michael K. Ng LSEC ICMSEC Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China School of Mathematics and Statistics Lanzhou University Lanzhou 730000 China Department of Mathematics Hong Kong Baptist University Kowloon Tong Hong Kong

Signal and image restoration problems are often solved by minimizing a cost function consisting of an l2 data-fidelity term and a regularization term. We consider a class of convex and edge-preserving regularization functions. In specific, half-quadratic regularization as a fixed-point iteration method is usually employed to solve this problem. The main aim of this paper is to solve the above-described signal and image restoration problems with the half-quadratic regularization technique by making use of the Newton method. At each iteration of the Newton method, the Newton equation is a structured system of linear equations of a symmetric positive definite coefficient matrix, and may be efficiently solved by the preconditioned conjugate gradient method accelerated with the modified block SSOR preconditioner. Our experimental results show that the modified block-SSOR preconditioned conjugate gradient method is feasible and effective for further improving the numerical performance of the half-quadratic regularization approach.

关键词： Block system of equations Matrix preconditioner Edge-preserving Image restoration Half-quadratic regularization.

SYNTHESIS　OF　A　SILICA－SUPPORTED　CARBOXYMETHYL　CELLULOSE　PLATINUM　COMPLEX　AND　ITS　CATALYTIC　BEHAVIORS　FOR　HYDROGENATION　OF　ETHYL　BENZOATE

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Chinese Chemical Letters 1995年第3期6卷 255-258页

作者： Li Ming TANG mei yu huang Ying Yan JIANG(Institute of Chemistry, Academia Sinica, Beijing 100080) Acad Sinica Inst Chem Beijing 100080 Peoples R China

A new natural polymeric catalyst, silica-supported carboxymethyl cellulose platinum complex (abbr. as SiO2-CMC-Pt) has been found to catalyze the hydrogenation of ethyl benzoate to ethyl cyclohexanecarboxylate in about 100% yield at 60-70℃ and 1 atm of hydrogen pressure. The turnover number could amount to 925when reacted for 42 h without deactivation of the catalyst.

关键词： t擩

Insight into Lithium–sulfur batteries performance enhancement:from metal nanoparticles to metal nanoclusters to single metal atoms

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Tungsten 2024年第3期6卷 504-521页

作者： Shuang Ma Qing-Ling Ruan Xue-Cheng Liu Gui-Jun Zhu Die yuan Ling-Qiao Hu yu-mei huang Xing-Xing Gu Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China National Research Base of Intelligent Manufacturing Service Chongqing Technology and Business UniversityChongqing 400067China

Lithium-sulfur(Li-S)batteries have attracted much attention and developed rapidly in recent years due to their high energy density,low cost,and ***,its commercialization process still encounters various *** them,the sulfur cathode is easy to dissolve and shuttle,resulting in the loss of active substances and the severe growth of lithium anode dendrites,which is one of the biggest *** the redox conversion kinetics of sulfur cathode is expected to fundamentally alleviate the shuttle phenomenon of poly ***,this paper reviews the effects of metal nanoparticles to metal nanoclusters to metal single-atom catalysts on improving the redox of Li-S batteries,to let researchers better understand the size effect on the kinetics of sulfur cathodes in Li-S batteries,which will provide important guidance for the future large-scale commercialization of Li-S batteries.

关键词： Lithium–sulfur batteries Metal nanoparticles Metal nanoclusters Metal single atoms Size effects

AEROBIC　EPOXIDATION　OF　STYRENE　CATALYZED　BY　MAGNESIUM　OXIDE　SUPPORTED　POLYTITAZANE　COBEST（III）　COMPLEXES

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Chinese Chemical Letters 1996年第8期7卷 749-752页

作者： yuan Yong YAN Tie Jun WANG Jian Ping GUO mei yu huang Ying Yan JLANG(InstitUte of Chemistry, Academia Sinica, Beijing 100080) Institute of Chemistiy Academia Sinica Beijing 100080

Magnesium oxide supported polghtazane-cobalt (III) complex has been prepared and foundto be capable of catalyzing the epoxidaton of styrene to form styrene oxide in 88.0 % yield in thepresence of isobutyraldehyde under an atmospheric pressure of molecular oxygen at roomtemperafor. XPS data shows that the high valent cobalt (III) is stabilized by the multidentate nitrogenligand of polytitazane. Dichloroethane is the best solvent chosen for this reaction. The catalyst can bereused for several times without any remarkable loss in catalytic activity and selectivity.

关键词： III COBEST BY AEROBIC

SELECTIVE HYDROGENATION OF BENZALDEHYDE TO CYCLOHEXANEMETHANOL CATALYZED BY SILICA-SUPPORTED CARBOXYMETHYL CELLULOSE-PLATINUM COMPLEX

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Chinese Chemical Letters 1994年第2期5卷 109-110页

作者： Li Ming TANG Qiang HE mei yu huang Ying Yan JIANG Institute of Chemistry Academia SinicaBeijing 100080

Silica-supported ***-platinum complex(abbreviated as Si-CMC-Pt) was found to catalyze the hvdrvgenation of benzaldevde to cyclohexanemetthanol in 100% vield in the presence of triethvlamine under mild conditions

关键词： X<$?

SELECTIVE　HYDROGENATION　OF　PHENOL　OVER　A　SILICA　SUPPORTED　POLYTITAZANE－Pt－Mn　BIMETALLIC　COMPLEX

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Chinese Chemical Letters 1994年第7期5卷 569-572页

作者： chum Wei CHEN mei yu huang and Ying Yan JIANG(Institute of Chemistry, Academia Sinica, Beijing 100080)

A new king of inorganic polymer silica-support polytitazane(Ti-N),and itsplatimum-manganese bimetallic complex(Ti-N-Pt-Mn) were *** activity and selectivity to cyclohexanone in the hydrogenation of phenol over Ti-N-Pt... 详细信息

关键词： Pt POLYTITAZANE Mn BIMETALLIC

Preparation and Properties of Cellutose-Alginic Acid Interpolymeric Complex Films

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复旦学报（自然科学版） 2005年第5期44卷 863-864页

作者： Xian-Hua HE mei-yu huang Ying-Yan JIANG 4060 Group Institute of Chemistry The Chinese Academy of Sciences Zhongguancun Beijing 100080 China

General synthetic polymers such as polyethylene, polyvinyl chloride, polystyrene etc. have been produced and used in large quantities. They are very cheap, but their wastes are difficult to decompose in nature so to cause environmental pollution . In order to overcome such disadvantage, various kinds of biodegradable synthetic polymers such as polyactic acid, aliphatic polyester, polyvinyl alcohol complexes etc. have been researched[1]. However, they are expensive, so cannot be manufactured on large scale. Biopolymers such as starch and cellulose have been used as raw materials to prepare biodegradable polymer materials[1,2]. Starch derivatives and starch containing materials have been prepared to obtain relatively cheap biodegradable polymer materials, but their water proofness is not so good[2].

关键词： AA-Na 复合膜聚合体合成方法生物降解环境保护

SELECTIVE　HYDROGENATION　OF　2－NAPHTHOL　CATALYZED　BYA　SILIC　A－SUPPORTED　POLYALUMAZANE　PLATINUM　COMPLES

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Chinese Chemical Letters 1994年第11期5卷 947-950页

作者： Chun Wei CHEN Ji Wen ZHENG mei yu huang and Ying Yan JIANG (Institute of Chemistry, Academia Sinica,Beijing, 100080)

Silica-supported polyaiumazane platinum complex displays high activity in hydrogenation of 2-naphthol under bald conditions. 2-Naphthol can be converted quantitahvely at 50℃ in 24 h and seledvity for the formation of...

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