نتایج جستجو برای: heaviside step function

تعداد نتایج: 1441923  

Journal: :Journal of the Computational Structural Engineering Institute of Korea 2013

2009
Rio de Janeiro

Previously Liao and Shuryak [Phys. Rev C (2008)] have investigated electrical flux tubes in monopole plasmas, where magnetic fields are non-solenoidal in quark-QCD plasmas. In this paper slow dynamos in diffusive plasma [Phys. Plasmas 15 (2008)] filaments (thin tubes) are obtained in the case of monopole plasmas. In the absence of diffusion the magnetic field decays in the Early Universe. The t...

Journal: :Neural computation 2009
Olivier D. Faugeras Romain Veltz François Grimbert

Neural continuum networks are an important aspect of the modeling of macroscopic parts of the cortex. Two classes of such networks are considered: voltage and activity based. In both cases, our networks contain an arbitrary number, n, of interacting neuron populations. Spatial nonsymmetric connectivity functions represent cortico-cortical, local connections, and external inputs represent nonloc...

Journal: :Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 2018

Journal: :Astronomy & Astrophysics 2001

Journal: :Statistics and Computing 2022

The direct sampling method proposed by Walker et al. (JCGS 2011) can generate draws from weighted distributions possibly having intractable normalizing constants. may be of interest as a tool in situations which require drawing an unfamiliar distribution. However, the original algorithm have difficulty producing some situations. present work restricts attention to univariate setting where weigh...

Journal: :Revista Brasileira de Ensino de Física 2015

Journal: :Bulletin of the American Mathematical Society 1939

Paria Assari Taher Lotfi

It is attempted to extend a two-step without memory method to it's with memory. Then, a new two-step derivative free class of without memory methods, requiring three function evaluations per step, is suggested by using a convenient weight function for solving nonlinear equations. Eventually, we obtain a new class of methods by employing a self-accelerating parameter calculated in each iterative...

Journal: :Computers & Chemical Engineering 2014
Oscar M. Hernández-Calderón Eusiel Rubio-Castro Erika Y. Rios-Iribe

In this paper, the orthogonal collocation technique is utilized to solve the Poppe method equations for heat and mass transfer in counter flowing wet-cooling towers. The six differential equations for unsaturated and supersaturated air from the Poppe method are simplified, yielding three differential equations that use the Heaviside function. The humidity ratio is demonstrated to be a finite po...

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