نتایج جستجو برای: perceptual assimilation model

تعداد نتایج: 2160980  

2015
James Marrone

I develop a model to explain many empirical facts about cultural assimilation and cultural change, and to make new empirically-relevant predictions about the efficiency of assimilation trajectories and the investments people make before and after migration. The model conceptualizes cultural assimilation as the accumulation of culture-specific capital and a choice between different production fu...

2011
M. Siek

Siek, M. and Solomatine, D.P., 2011. Real-time data assimilation for chaotic storm surge model using NARX neural network. Journal of Coastal Research, SI 64 (Proceedings of the 11th International Coastal Symposium), 1189 – 1194. Szczecin, Poland, ISSN 0749-0208 This paper introduces a real-time data assimilation technique where Nonlinear AutoRegressive with eXogenous inputs (NARX) neural networ...

2009
Xiangjun Tian Zhenghui Xie Aiguo Dai Chunxiang Shi Binghao Jia Feng Chen Kun Yang

[1] To overcome the difficulties in determining the optimal parameters needed for a radiative transfer model (RTM), which acts as the observational operator in a land data assimilation system, we have designed a dual-pass assimilation (DP-En4DVar) framework to optimize the model state (volumetric soil moisture content) and model parameters simultaneously using the gridded Advanced Microwave Sca...

2006
Kazuyuki Nakamura Tomoyuki Higuchi Naoki Hirose

Data assimilation in geophysics is a method of combining a numerical simulation model and incomplete observation data. A data assimilation problem can be formulated by an estimation using a nonlinear state space model and can be resolved using the particle filter. In this paper, we give a framework for resolving the correction and identification problem of erroneous tsunami simulation models us...

2003
Donald L. Amoroso

This study demonstrates the usefulness of the Web assimilation model to understand the factors that might contribute to enhancing organizational performance with e-business technologies. In this paper, the Chatterjee et al. model of Web Assimilation is used to provide the foundation for investigation of the relationships of interest that would enhance the effectiveness of Web-based technologies...

2008
Eugene Kazantsev

The use of the data assimilation technique to identify optimal topography is discussed in frames of time-dependent motion governed by non-linear barotropic ocean model. Assimilation of artificially generated data allows to measure the influence of various error sources and to classify the impact of noise that is present in observational data and model parameters. The choice of assimilation wind...

1999
G. P. Brasseur

Observations of carbon monoxide (CO) by the MAPS instrument onboard the Space Shuttle were assimilated into a global three-dimensional chemistry transport model using the Optimal Interpolation approach. The assimilation considerably improved the calculated distribution of CO in the troposphere. On the global scale, the adjustment of the CO eld resulting from the assimilation procedure was large...

Introduction: As much as the women`s behavior for the premature diagnosis of the breast cancer is affected by the cultural and social factors, the purpose of this study is to investigate factors associated with screening accordance with the model PEN-3. Materials and Methods: The present study was cross-sectional. The samples studied were women above 20 years and the sample size was 1416 peo...

2008
Lin Wu Vivien Mallet Marc Bocquet

The objective of this report is to evaluate the performances of different data assimilation schemes with the aim of designing suitable assimilation algorithms for short-range ozone forecasts in realistic applications. The underlying atmospheric chemistry-transport models are stiff but stable systems with high uncertainties (e.g., over 20% for ozone daily peaks, Hanna et al. [1998]; Mallet and S...

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