نتایج جستجو برای: topography

تعداد نتایج: 28607  

Journal: :environmental resources research 2014
vahedberdi sheikh emiel van loon leo stroosnijder

the relationship between topography, land use, and topsoil moisture storage is investigated for a small catchment with undulating deep loess hilslopes in the south of the netherlands. for a period of 10 months, soil moisture profiles have been measured weekly at 15 locations throughout the catchment. a generalized additive model was employed to find relationships between the various factors inf...

Journal: :SIAM J. Scientific Computing 2012
Siddhartha Mishra Christoph Schwab Jonas Sukys

The initial data and bottom topography, used as inputs in shallow water models, are prone to uncertainty due to measurement errors. We model this uncertainty statistically in terms of random shallow water equations. We extend the Multi-Level Monte Carlo (MLMC) algorithm to numerically approximate the random shallow water equations efficiently. The MLMC algorithm is suitably modified to deal wit...

Journal: :Numerische Mathematik 2014
Arthur Bousquet Gung-Min Gie Youngjoon Hong Jacques Laminie

We construct the cell-centered Finite Volume discretization of the twodimensional inviscid primitive equations in a domain with topography. To compute the numerical fluxes, the so-called Upwind Scheme (US) and the Central-Upwind Scheme (CUS) are introduced. For the time discretization, we use the classical 4th order RungeKutta method. We verify, with our numerical simulations, that the US (or C...

Journal: :بینا 0
عباس باقری a bagheri تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم حمیدرضا حسنی hr hasani تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم فرید کریمیان f karimian تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم

purpose: to evaluate the effect of location and size of chalazia on refractive error, corneal topography and visual acuity. methods: this randomized non-controlled clinical trial was conducted on patients with chalazion aged more than 3 years with minimum duration of one month. all patients underwent chalazion excision by the internal or external approach. results: two-hundred and fifty-three e...

2016
Ting Yang Michael Gurnis

S U M M A R Y Lateral viscosity variations (LVVs) in the mantle influence geodynamic processes and their surface expressions. With the observed long-wavelength geoid, free-air anomaly, gravity gradient in three directions and discrete, high-accuracy residual topography, we invert for depthand temperature-dependent and tectonically regionalized mantle viscosity with a mantle flow model. The inve...

2010
Mary Alexandra Agner Bradford H. Hager Ronald Prinn

Recent seismological measurements of the Pacific oceanic structure have detected a positive correspondence between surface topography, seismic wave speed, and the geoid (gravitational potential). High seismic wave speed indicates cold material sinking, which pulls the surface downward. Thus, topographic lows are expected to correlate with seismic wave speed highs, contrary to the new seismic me...

Journal: :Journal of neurophysiology 2011
Randy L Buckner Fenna M Krienen Angela Castellanos Julio C Diaz B T Thomas Yeo

The cerebral cortex communicates with the cerebellum via polysynaptic circuits. Separate regions of the cerebellum are connected to distinct cerebral areas, forming a complex topography. In this study we explored the organization of cerebrocerebellar circuits in the human using resting-state functional connectivity MRI (fcMRI). Data from 1,000 subjects were registered using nonlinear deformatio...

2005
M. Sellier

The effect of topography on the free surface and solvent concentration profiles of an evaporating thin film of liquid flowing down an inclined plane is considered. The liquid is assumed to be composed of a resin dissolved in a volatile solvent with the associated solvent concentration equation derived on the basis of the well-mixed approximation. The dynamics of the film is formulated as a lubr...

2016
R J Robinson E C Hensel K A Roundtree A G Difrancesco J M Nonnemaker Y O Lee

Results of an observational, descriptive study quantifying topography characteristics of twenty first generation electronic nicotine delivery system users in their natural environment for a one week observation period are presented. The study quantifies inter-participant variation in puffing topography between users and the intra-participant variation for each user observed during one week of u...

Journal: :Journal of the experimental analysis of behavior 1997
B O Ploog H P Zeigler

The relation between variables that modulate the probability and the topography of key pecks was examined using a concurrent variable-interval variable-interval schedule with food and water reinforcers. Measures of response probability (response rates, time allocation) and topography (peck duration, gape amplitude) were obtained in 5 water- and food-deprived pigeons. Key color signaled reinforc...

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