Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Tashiro, Tohru"'
We propose a dynamical toy model of agents which possess a quantity and have an interaction radius depending on the amount of the quantity. They exchange the quantity with agents existing within their interaction radii. It is shown in the paper that
Externí odkaz:
http://arxiv.org/abs/2408.01674
Autor:
Tashiro, Tohru
Publikováno v:
Physics Letters A, Volume 383, Issue 26 (2019) 125829
We investigate the quasi-equilibrium state of one-dimensional self-gravitating systems. If the null virial condition is satisfied at initial time, it is found that the number density around the center of the system at the quasi-equilibrium state has
Externí odkaz:
http://arxiv.org/abs/1903.03307
Autor:
Tashiro, Tohru, Yoshimura, Fujiko
We propose a neo-logistic model that can describe bacterial growth data precisely. This model is not derived by modifying the logistic model formally, but by incorporating the synthesis of inducible enzymes into the logistic model indirectly. Therefo
Externí odkaz:
http://arxiv.org/abs/1709.05629
Autor:
Tashiro, Tohru
Publikováno v:
Phys. Rev. E 93, 020103 (2016)
We study a universal structure of two and three dimensional self-gravitating systems in the quasi-equilibrium state. It is shown numerically that the two dimensional self-gravitating system in the quasi-equilibrium state has the same kind of density
Externí odkaz:
http://arxiv.org/abs/1505.02014
Autor:
Tashiro, Tohru
Publikováno v:
Journal of Physics: Conference Series 490 012181 (2014)
We propose a new model about diffusion of a product which includes a memory of how many adopters or advertisements a non-adopter met, where (non-)adopters mean people (not) possessing the product. This effect is lacking in the Bass model. As an appli
Externí odkaz:
http://arxiv.org/abs/1309.4863
Publikováno v:
Physica A: Statistical Mechanics and its Applications, 430 (2015) 57
We propose a hierarchical logistic equation as a model to describe the dynamical behavior of a penetration rate of a prevalent stuff. In this model, a memory, how many people who already possess it a person who does not process it yet met, is conside
Externí odkaz:
http://arxiv.org/abs/1209.3466
Autor:
Tashiro, Tohru, Kakuta, Wakako
Publikováno v:
Journal of Physical Science and Application vol. 3 (2013) pp. 184
We clarify how magnetic reconnection can be derived from magnetohydrodynamics (MHD) equations in a way that is easily understandable to university students. The essential mechanism governing the time evolution of the magnetic field is diffusion dynam
Externí odkaz:
http://arxiv.org/abs/1206.5161
Autor:
Tashiro, Tohru, Tatekawa, Takayuki
We will construct a theory which can explain the dynamics toward the steady state self-gravitating systems (SGSs) where many particles interact via the gravitational force. Real examples of SGS in the universe are globular clusters and galaxies. The
Externí odkaz:
http://arxiv.org/abs/1108.1532
Autor:
Tashiro, Tohru, Tatekawa, Takayuki
Publikováno v:
J. Phys. Soc. Jpn. 79 (2010) 063001
We derive the non-Maxwellian distribution of self-gravitating $N$-body systems around the core by a model based on the random process with the additive and the multiplicative noise. The number density can be obtained through the steady state solution
Externí odkaz:
http://arxiv.org/abs/1108.1432
Autor:
Tashiro, Tohru
Publikováno v:
J. Phys. A: Math. Theor. 42 (2009) 165002
A parametric oscillator with damping driven by white noise is studied. The mean square displacement (MSD) in the long-time limit is derived analytically for the case that the static force vanishes, which was not treated in the past work \cite{tashiro
Externí odkaz:
http://arxiv.org/abs/0808.2207