puah yan | INTI Interntional University (original) (raw)

Papers by puah yan

Agricultural Economics Review, Jan 1, 2002

Proc. SPIE, Jan 1, 2001

This novel feature-based method is able to reduce the computation overheads without compromising ... more This novel feature-based method is able to reduce the computation overheads without compromising the matching accuracy of satellite images. It incorporates the bi-orthogonal wavelet filter using B-splines designed by Yu and Ho [1]. The biorthogonal wavelet filter is used to perform multi-resolution edge extraction and multi-resolution matching. Edges are matched using adaptive matching windows that vary their shapes according to the directions of the edges. An adaptive searching range is applied because the searching range of each edge point may be different. Moreover, the matched results for low resolution levels are utilized for interpolating high resolution mismatched pixels. Detailed comparison with other new feature-based algorithm on SPOT and aerial stereo images was performed. The results obtained show that the proposed algorithm was computationally more efficient as well as achieving an overall improved matched accuracy.

The Journal of …, Jan 1, 2000

DFT/B3LYP calculations were carried out on complexes formed by NH 4 + with aromatics, viz. benzen... more DFT/B3LYP calculations were carried out on complexes formed by NH 4 + with aromatics, viz. benzene, phenol, pyrrole, imidazole, pyridine, indole, furane, and thiophene, to characterize the forces involved in such interactions and to gain further insight into the nature and diversity of cation-aromatic interactions. Such calculations may provide valuable information for understanding molecular recognition in biological systems and for force-field development. B3LYP/6-31G** optimization on 35 initial structures resulted in 11 different finally optimized geometries, which could be divided into three types: NH 4 + -π complexes, protonated heterocyclic-NH 3 hydrogen bond complexes, and heterocyclic-NH 4 + hydrogen bond complexes. For NH 4 + -π complexes, NH 4 + always tilts toward the carbon-carbon bond rather than toward the heteroatom or the carbonheteroatom bond. The calculated CHelpG charges suggest that the charge distribution of a free heterocyclic may be used to predict the geometry of its complex. Charge population and electrostatic interaction estimations show that the NH 4 + -π interaction has the largest nonelectrostatic interaction fraction (∼47%) of the total binding energy, while the NH 4 + -aromatic hydrogen bond interaction has the largest electrostatic fraction (∼90%). A good correlation between binding energy and electrostatic interaction in the NH 4 + -π complexes is found, which shows that nonelectrostatic interaction is important for cation-π binding. The results calculated with basis sets from 6-31G to 6-311++G(2df, 2dp) show that ∆E corr and ∆H corr do not require a basis-set superposition error (BSSE) correction, in view of experimental error, if a larger basis set is used in the calculation. The calculated ∆H corr values for the NH 4 + -C 6 H 6 complex with different basis sets suggest that the experimental ∆H may be overestimated.

Applied Mechanics and …, Jan 1, 2012

Journal of Plant …, Jan 1, 2012

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Faith and fertility: attitudes towards reproductive …, Jan 1, 2009

Journal of China Institute of, Jan 1, 2008

... JIN Yan (Nanjing University of Posts and Telecommunications,Nanjing 210003,Jiangsu Province,C... more ... JIN Yan (Nanjing University of Posts and Telecommunications,Nanjing 210003,Jiangsu Province,China). As one important part of industrial relations,the ... influenced the industrial relations act.However,at the beginning d its foundation,its main purpose was not to puah forward the ...

ngp.org.sg

Virtual High Throughput Screening requires not only more processors, but also high speed processo... more Virtual High Throughput Screening requires not only more processors, but also high speed processors. The study conducted to compare mapping of DOCK program on SGI Fuel, Sun Fire V240 and Intel Pentium III, has revealed that Dock programs were written for 32 bit platform, and run well on the 32 bits based Intel processors. Attempts to convert DOCK programs onto the 64-bits processors have neither improve accuracy, nor speed-up the screening process.

The IUP Journal of Agricultural …, Jan 1, 2008

The study of various spatial price relationships is indeed crucial and has been greatly sought af... more The study of various spatial price relationships is indeed crucial and has been greatly sought after. Likewise, this study is rather a debatable topic these days especially towards the pricing activity and competitiveness within the pepper industry. Evidence from six markets within Sarawak had found that a long run relationship between the pepper markets does actually exist. And using the MWALD test though, findings revealed that the white pepper prices do Granger cause the black pepper prices in all divisions. However, there is no indication of causality that runs from the black pepper towards the white pepper. In other words, white pepper does affect the black pepper, but not the other way around. Due to the integration within the pepper industry, thus, excess profit making opportunity will not be made beneficial as the pepper markets are efficient.