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A method for red tide detection and discrimination of red tide type(spherical and non-spherical shapes of red tide) through polarization measurements of sea surface

by Kohei Arai, Yasunori Terayama - International Journal of Applied Science
"... A method for red tide detection and for discrimination of red tide type (spherical and non-spherical shapes of red tide type) through polarization measurements of water leaving radiance is proposed. There are a variety of shapes of red tide types, in particular, spherical and non-spherical shapes. P ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
A method for red tide detection and for discrimination of red tide type (spherical and non-spherical shapes of red tide type) through polarization measurements of water leaving radiance is proposed. There are a variety of shapes of red tide types, in particular, spherical and non-spherical shapes

CURE: An Efficient Clustering Algorithm for Large Data sets

by Sudipto Guha, Rajeev Rastogi, Kyuseok Shim - Published in the Proceedings of the ACM SIGMOD Conference , 1998
"... Clustering, in data mining, is useful for discovering groups and identifying interesting distributions in the underlying data. Traditional clustering algorithms either favor clusters with spherical shapes and similar sizes, or are very fragile in the presence of outliers. We propose a new clustering ..."
Abstract - Cited by 722 (5 self) - Add to MetaCart
clustering algorithm called CURE that is more robust to outliers, and identifies clusters having non-spherical shapes and wide variances in size. CURE achieves this by representing each cluster by a certain fixed number of points that are generated by selecting well scattered points from the cluster

Monte Carlo Ray Tracing Simulation of Polarization Characteristics of Sea Water Which Contains Spherical and Non-Spherical Particles of Suspended Solid and Phytoplankton

by Kohei Arai, Yasunori Terayama
"... Abstract — Simulation method of sea water which contains spherical and non-spherical particles of suspended solid and phytoplankton based on Monte Carlo Ray Tracing: MCRT is proposed for identifying non-spherical species of phytoplankton. From the simulation results, it is found that the proposed MC ..."
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MCRT model is validated. Also some possibility of identification of spherical and non-spherical shapes of particles which are contained in sea water is shown. Meanwhile, simulations with the different shape of particles, Prolate and Oblate show that Degree of Polarization: DP depends on shapes

The Effect Of Particle Shape And Friction On The Stresses In Heaps Of Granular Media

by H.-G. Matuttis, S. Luding - Friction, Arching and Contact Dynamics , 1997
"... this paper is to include more physical features like friction and non-spherical shapes of the particles in the model by computational means and to investigate the effect of different construction methods and boundary conditions. 2 Algorithm ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
this paper is to include more physical features like friction and non-spherical shapes of the particles in the model by computational means and to investigate the effect of different construction methods and boundary conditions. 2 Algorithm

The Effect Of Particle Shape And Friction On The Stresses In Heaps Of Granular Media

by Matuttis Luding Institute, H. -g. Matuttis, S. Luding - Friction, Arching and Contact Dynamics , 1997
"... this paper is to include more physical features like friction and non-spherical shapes of the particles in the model by computational means and to investigate the effect of different construction methods and boundary conditions. ..."
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this paper is to include more physical features like friction and non-spherical shapes of the particles in the model by computational means and to investigate the effect of different construction methods and boundary conditions.

non-spherical stellar systems

by unknown authors , 2014
"... We have developed a novel Monte Carlo method for simulating dynamical evolution of stellar systems in arbitrary geometry. The orbits of stars are followed in a smooth potential represented by a basis-set decomposition and perturbed after each timestep using local velocity diffusion coefficients from ..."
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include the problem of consumption of stars by a massive black hole in a non-spherical galactic nucleus, evolution of binary supermassive black holes, and the influence of chaos on the shape of galaxies, while for globular clusters it may be used for studying the influence of rotation.

non-spherical stellar systems

by unknown authors , 2014
"... We have developed a novel Monte Carlo method for simulating the dynamical evolution of stellar systems in arbitrary geometry. The orbits of stars are followed in a smooth potential represented by a basis-set expansion and perturbed after each timestep using local velocity diffusion coefficients from ..."
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in the simulation. Possible future applications of this approach in galaxy dynamics include the problem of consumption of stars by a massive black hole in a non-spherical galactic nucleus, evolution of binary supermassive black holes, and the influence of chaos on the shape of galaxies, while for globular clusters

Distorted, non-spherical transiting planets: impact on the transit depth and on the radius determination.

by unknown authors , 2009
"... In this paper, we quantify the systematic impact of the non-spherical shape of transiting planets, due to tidal forces and rotation, on the observed transit depth. Such a departure from sphericity leads to a bias in the derivation of the transit radius from the light curve and affects the comparison ..."
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In this paper, we quantify the systematic impact of the non-spherical shape of transiting planets, due to tidal forces and rotation, on the observed transit depth. Such a departure from sphericity leads to a bias in the derivation of the transit radius from the light curve and affects

Saltation of Non-Spherical Sand Particles

by Zhengshi Wang, Shan Ren, Ning Huang , 2014
"... Saltation is an important geological process and the primary source of atmospheric mineral dust aerosols. Unfortunately, no studies to date have been able to precisely reproduce the saltation process because of the simplified theoretical models used. For example, sand particles in most of the existi ..."
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, and the effect of the sand grain shape. Based on this model, the saltation process and sand transport rate of non-spherical sand particles were simulated. The results show that the sand shape has a significant impact on the saltation process; for the same wind speed, the sand transport rates varied for different

Squishy Non-Spherical Hydrogel Microparticles

by Ramin Haghgooie, Mehmet Toner, Patrick S. Doyle - Macromol. Rapid Commun , 2010
"... Recent advances in the synthesis of polymeric colloids have opened the doors to new advanced materials. There is strong interest in using these new techniques to produce particles that mimic and/or interact with biological systems. An important characteristic of biological systems that has not yet b ..."
Abstract - Cited by 3 (1 self) - Add to MetaCart
been exploited in synthetic polymeric colloids is their wide range of deformability. A canonical example of this is the human red blood cell (RBC) which exhibits extreme reversible deformability under flow. Here we report the synthesis of soft polymeric colloids with sizes and shapes that mimic those
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