نتایج جستجو برای: polar pattern

تعداد نتایج: 391475  

2016
Wenze Xia Shaokun Han Jie Cao Haoyong Yu

The ladar range image has received considerable attentions in the automatic target recognition field. However, previous research does not cover target recognition using log-polar ladar range images. Therefore, we construct a target recognition system based on log-polar ladar range images in this paper. In this system combined moment invariants and backpropagation neural network are selected as ...

Journal: :physical chemistry research 0
seyed ahmad razavizadeh payam e noor university

in the present work, a modified correlation is presented for the second virial coefficients of both polar and nonpolar fluids based on the corresponding states principle. the second virial coefficients of gaseous polar and non-polar compounds were calculated and compared with experimental data and with other correlations. comparisons with the existing correlations show that the present work is ...

Journal: :The Journal of experimental biology 2012
Amy L Moran H Arthur Woods

Beginning with the earliest expeditions to the poles, over 100 years ago, scientists have compiled an impressive list of polar taxa whose body sizes are unusually large. This phenomenon has become known as 'polar gigantism'. In the intervening years, biologists have proposed a multitude of hypotheses to explain polar gigantism. These hypotheses run the gamut from invoking release from physical ...

Journal: :Journal of Atmospheric and Solar-Terrestrial Physics 2021

We investigated the average polar patterns of ionospheric electron density and corresponding scaling features as a function interplanetary magnetic field orientation. The focus is on Northern Hemisphere using data recorded on-board ESA Swarm A satellite. first- second-order exponents have been evaluated by means qth-order structure functions. used measurements over period 15 months from April 1...

2017
Ronald Bartzatt

Aims: To identify isosteres and bioisosteres suitable for substitution on the molecular scaffold of meclofenamic acid and tolfenamic acid. The compounds will be studied to determine drug-likeness and other properties. Study Design: Isosteres and bioisosteres were selected and emplaced on the scaffold of meclofenamic acid and tolfenamic acid to ascertain drug-likeness outcome. Drug candidates we...

2005
Shmuel Brody Naftali Tishby Beata Beigman Klebanov

ii Acknowledgements I would like to thank my adviser Prof. Tishby for his guidance and assistance in producing this work, and for his suggestions and positive input. I would also like to thank Beata Beigman Klebanov for her constant help and advice throughout this work, including (but definitely not limited to) the contribution of the parsed data used here. Also deserving of thanks are my famil...

In this paper, we first give a characterization of sub-topical functions with respect to their lower level sets and epigraph. Next, by using two different classes of elementary functions, we present a characterization of sub-topical functions with respect to their polar functions, and investigate the relation between polar functions and support sets of this class of functions. Finally, we obtai...

2010
Choochart Haruechaiyasak Alisa Kongthon Pornpimon Palingoon Chatchawal Sangkeettrakarn

Opinion mining and sentiment analysis has recently gained increasing attention among the NLP community. Opinion mining is considered a domaindependent task. Constructing lexicons for different domains is labor intensive. In this paper, we propose a framework for constructing Thai language resource for feature-based opinion mining. The feature-based opinion mining essentially relies on the use o...

Journal: :Science 2002
David W J Thompson Susan Solomon

Climate variability in the high-latitude Southern Hemisphere (SH) is dominated by the SH annular mode, a large-scale pattern of variability characterized by fluctuations in the strength of the circumpolar vortex. We present evidence that recent trends in the SH tropospheric circulation can be interpreted as a bias toward the high-index polarity of this pattern, with stronger westerly flow encir...

2017
Chenyang Zhao Chi Fai Cheung Mingyu Liu

This paper presents a functional microstructured surface, named Polar Microstructure. Polar microstructure is a three dimensional (3D) structured surface possessing a pattern of distribution of latitude and longitude micro-topographies with geometrical characteristics, which is similar to that in the Earth’s north or south pole. The spacing of its small surface features can achieve form accurac...

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