نتایج جستجو برای: physical model

تعداد نتایج: 2649977  

2009
Vithal Tilvi Sangeeta Malhotra James E. Rhoads Evan Scannapieco Robert J. Thacker Ilian T. Iliev Garrelt Mellema

We present a simple physical model for populating dark matter (DM) halos with Lyman Alpha Emiiters (LAEs) and predict the physical properties of LAEs at z ≈ 3− 7. The central tenet of this model is that the Lyα luminosity is proportional to the star formation rate (SFR) which is directly related to the halo mass accretion rate. The only free parameter in our model is then the starformation effi...

2015
Yuting Duan Paul Sava

We propose elastic isotropic wavefield tomography formulated with the misfit of observed and recorded data as the objective function. The adjoint-state method enables efficient calculation of the gradient of this data misfit function. We solve this optimization problem with the gradient-descent method in order to update the model parameters iteratively. Using the elastic isotropic wave-equation...

2013
Makoto Nakaya Xinchun Li

MIRROR PLANT uses physical plant modeling based on physical and chemical laws. However, the physical model cannot express some phenomena in plants, especially those which are not physically determined yet. We propose a hybrid model of a physical model and a statistical model based on historical plant operation data. Combining the physical model and statistical model improves the estimation accu...

2006
N. E. Ligterink P. C. Breedveld

The ab-initio analysis of a continuous system starts with the microscopic theory of the material, usually expressed in terms of partial differential equations, while a system analysis starts with its global properties and interconnections. These two ends must meet for an accurate and effective model of continuous systems. The macroscopic interaction between components is consistently defined by...

Journal: :IJUC 2008
Niall Murphy Thomas J. Naughton Damien Woods B. Henley K. Mcdermott E. Duffy P. J. M. Van Der Burgt N. Woods

We define a computational model of physical devices that have a parallel atomic operation that transforms their input, an unordered list, in such a way that their output, the sorted list, can be sequentially read off in linear time. We show that several commonly-used scientific laboratory techniques (from biology, chemistry, and physics) are instances of the model and we provide experimental im...

Journal: :Journal of Nutrition and Metabolism 2012

Journal: :Revista Latino-Americana de Enfermagem 2018

Journal: :Digital Journal of Ophthalmology 2013

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