نتایج جستجو برای: saturation exponent

تعداد نتایج: 67430  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Yael Efraim Haim Taitelbaum

In this paper, we report on persistence results of reactive-wetting advancing interfaces performed with mercury on silver at room temperature. Earlier kinetic roughening studies of reactive-wetting systems at room temperature as well as at high temperatures revealed some limited information on the spatiotemporal behavior of these systems. However, by calculating the persistence exponent, we wer...

2008
Viviane M. de Oliveira Paulo R. A. Campos M. A. F. Gomes I. R. Tsang

A simple spatial computer simulation model was recently introduced to study the evolution of the linguistic diversity [1]. The model considers processes of selective geographic colonization, linguistic anomalous diffusion and mutation. In the approach, we ascribe to each language a fitness function which depends on the number of people that speak that language. Here we extend the aforementioned...

2006
Meejoung Kim

In this paper, we propose two mechanisms, differentiation by backoff exponent and differentiation by the size of contention window, for IEEE 802.15.4 sensor networks to provide multi-level differentiated services in beacon-enabled mode with slotted CSMA/CA algorithm under non-saturation condition. Mathematical model based on discrete-time Markov chain is presented and analyzed to measure the pe...

2009
Jesús M. Salazar Gong Li Wang Carlos Torres-Verdín Hee Jae Lee

Knowledge of initial water saturation is necessary to estimate original hydrocarbon in place. A reliable assessment of this petrophysical property is possiblewhen rock-coremeasurements ofArchie’s parameters, such as saturation exponent n and cementation exponent m, are available. In addition, chemical analysis of formation water is necessary to measure connate-water resistivityRw. Suchmeasureme...

Journal: :Huan jing ke xue= Huanjing kexue 2012
Jin-Liang Huang Jie Lin Peng-Fei Du

An urban watershed in Xiamen was selected to perform the parameter uncertainty analysis for urban stormwater runoff modeling in terms of identification and sensitivity analysis based on storm water management model (SWMM) using Monte-Carlo sampling and regionalized sensitivity analysis (RSA) algorithm. Results show that Dstore-Imperv, Dstore-Perv and Curve Number (CN) are the identifiable param...

Journal: :Physical review letters 2002
Sheng-Qi Zhou Ke-Qing Xia

Statistical properties of the temperature field in turbulent convection are studied experimentally. We show that the skewness of the plus and minus temperature increments can be used to quantitatively characterize the mixing zone in the convective flow and the result reveals how the mixing zone evolves with the Rayleigh number. We also present evidence for the saturation of the temperature stru...

Water saturation and cation exchange capacity are the most significant parameters used to calculate a hydrocarbon zone potential. In clean formations, by applying the famous Archie model, which assumes that in the formation the only electric conductor is the formation water, the water saturation can be calculated. Additionally, in shaly sand formations this assumption may not be true as the ion...

2008
V. Hariharan R. Thakker M. B. Patil J. Vasi Ramgopal Rao

A closed-form inversion charge-based long-channel drain current model is developed for a symmetrically driven, lightly doped Symmetric Double-Gate MOSFET (SDGFET). It is based on the drift-diffusion transport mechanism and considers velocity saturation using the Caughey-Thomas model with exponent n=2, vertical field mobility degradation and body doping. It is valid in subthreshold as well as ab...

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