252 Result(s)

Chapter and Conference Paper

Linear and Nonlinear Optical Properties of Improved Single Crystal PTS

Improved methods for the growth and polymerization of single crystals of polydiacetylene PTS, poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol, have allowed new optical measurements to be made. The abso...

Mingguo Liu, Sergey Polyakov, Fumiyo Yoshino… in Multiphoton and Light Driven Multielectron… (2000)

Chapter

Polydiacetylene PTS: A Molecular Quantum Wire with Exceptional Optical Properties

The conjugated polymer 2,4-hexadiyne-1,6-diol-bis-(para-toluenesuIfonate) or PTS is a classical example of a one-dimensional quantum wire. The π-electrons can move more or less freely in one dimension. There a...

Carlos G. Treviño-Palacios, George Stegeman… in Frontiers of Nano-Optoelectronic Systems (2000)

Article

Blue-violet light second harmonic generation with CMTC crystals

Guanghui Zhang, Mingguo Liu, Dong Xu, Duorong Yuan… in Journal of Materials Science Letters (2000)

Article

Recombinant constructions and infectivity analysis of tobacco mosaic virus and attenuated tomato mosaic virus N14 genomes

The recombinant clones of pTN and pNT have been constructed by exchanging the coding regions of the movement proteins (MP), coat proteins (CP) and 3− noncoding regions between the cDNAs of the tobacco mosaic v...

Gong Yang, **angguo Liu, Bingsheng Qiu in Chinese Science Bulletin (2000)

Article

Harmonic frequency mixing using highT _c superconductor Josephson junction mounted on pulse tube cryocooler

A frequency mixing system including microwave coupling and intermediate frequency (IF) measurement arrangements is designed. In lieu of liquid nitrogen, a pulse tube cryocooler is used to cool the whole system...

Weiwei Xu, Qingguo Liu, Gangdong Zhou, Zhengming Ji, Peiheng Wu in Chinese Science Bulletin (2001)

Article

Ordered supramolecular assembly of bis[3,4,1 2,13,21,22,30, 31-octa(dodecylthio)-2,3-naphthalocyaninato] erbium at the air/water interface

The supramolecular assembly of bis[3, 4, 12, 13, 21, 22, 30, 31-octa(dodecylthio)-2, 3-naphthalocyaninato] erbium complex (Er[Nc(SC₁₂H25)₈]₂) was fabricated at the air/water interface by Langmuir monolayer techni...

Yanli Chen, Hongguo Liu, Na Pan, **anxi Zhang… in Science in China Series B: Chemistry (2001)

Article

The feature subset selection algorithm

The motivation of data mining is how to extract effective information from huge data in very large database. However, some redundant and irrelevant attributes, which result in low performance and high computin...

Yongguo Liu, Xueming Li, Zhongfu Wu in Journal of Electronics (China) (2003)

Article

Influence of a preceding auditory stimulus on evoked potential of the succeeding stimulus

In the present study, we investigated the influence of the preceding auditory stimulus on the auditory-evoked potential (AEP) of the succeeding stimuli, when the human subjects were presented with a pair of au...

Mingshi Wang, Zhongguo Liu, Qiang Zhu, ** Liu, Liqun Wang… in Chinese Science Bulletin (2004)

Chapter and Conference Paper

A Hybrid Tabu Search Based Clustering Algorithm

The clustering problem under the criterion of minimum sum of squares clustering is a nonconvex program which possesses many locally optimal values, resulting that its solution often falls into these traps. In ...

Yongguo Liu, Yan Liu, Libin Wang, Kefei Chen in Knowledge-Based Intelligent Information an… (2005)

Chapter and Conference Paper

Clustering with Noising Method

The minimum sum of squares clustering problem is a nonconvex program which possesses many locally optimal values, resulting that its solution often falls into these traps. In this article, a recent metaheurist...

Yongguo Liu, Yan Liu, Kefei Chen in Advanced Data Mining and Applications (2005)

Chapter and Conference Paper

A Tabu Clustering Method with DHB Operation and Mergence and Partition Operation

A new tabu clustering method called ITCA is developed for the minimum sum of squares clustering problem, where DHB operation and mergence and partition operation are introduced to fine-tune the current solutio...

Yongguo Liu, Dong Zheng, Shiqun Li, Libin Wang, Kefei Chen in Discovery Science (2005)

Chapter and Conference Paper

A Tabu Search Based Method for Minimum Sum of Squares Clustering

In this article, the metaheuristic algorithm, tabu search, is proposed to deal with the clustering problem under the criterion of minimum sum of squares clustering. The presented method integrates four moving ...

Yongguo Liu, Libin Wang, Kefei Chen in Pattern Recognition and Data Mining (2005)

Chapter and Conference Paper

An Operator Splitting Method for Nonlinear Reactive Transport Equations and Its Implementation Based on DLL and COM

In this paper, we propose an operator splitting method for convection-dominated transport equations with nonlinear reactions, which model groundwater contaminant biodegradation and many other interesting appli...

Jiangguo Liu, Richard E. Ewing in Current Trends in High Performance Computi… (2005)

Article

Preparation of PbS nanoparticles templated from perovskite Langmuir-Blodgett film

Limei Xu, **ao Chen, Luyan Wang, Zhenming Sui, Hongguo Liu… in Chinese Science Bulletin (2005)

Chapter and Conference Paper

An Improved Hybrid Genetic Clustering Algorithm

In this paper, a new genetic clustering algorithm called IHGA-clustering is proposed to deal with the clustering problem under the criterion of minimum sum of squares clustering. In IHGA-clustering, DHB operat...

Yongguo Liu, Jun Peng, Kefei Chen, Yi Zhang in Advances in Artificial Intelligence (2006)

Article

Materials informatics and study on its further development

Materials informatics is a cross discipline combining materials science and information science. The concept of materials informatics was introduced and expounded. The current status of research and applicatio...

Qunyi Wei, **aodong Peng, **angguo Liu, Weidong **e in Chinese Science Bulletin (2006)

Article

Essential residues for DNA binding activity of ManR fromAnabaena sp. PCC 7120

Cyanobacterial ManR is a member of the OmpR family of response regulator that regulates the expression of themntABC andmntH in response to Mn²⁺ signals. Single-alanine substitutions of I204, L207 and R208 residue...

Wei Huang, Qingyu Wu, Min Li, **ngguo Liu in Annals of Microbiology (2006)

Chapter and Conference Paper

A Novel Artistic Image Generation Technique: Making Relief Effects Through Evolution

The fascinating effect of applying evolutionary algorithms (EAs) to real-world applications consists in its less requirement of knowledge of the applied domain. Many efforts on this idea lead to a new term Nature...

**gsong He, Bo** Shi, Mingguo Liu in Advances in Computation and Intelligence (2007)

Chapter and Conference Paper

Multilayer Perceptron Networks Training Using Particle Swarm Optimization with Minimum Velocity Constraints

Multilayer perceptron networks have been successfully trai- ned by error backpropagation algorithm. We show that Particle Swarm Optimization(PSO) with minimum velocity constraints can efficiently be applied to...

**aorong Pu, Zhongjie Fang, Yongguo Liu in Advances in Neural Networks – ISNN 2007 (2007)