نتایج جستجو برای: diffusion and dispersion modeling
تعداد نتایج: 16929229 فیلتر نتایج به سال:
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
Near Field Atmospheric Dispersion Modeling on an Industrial Site Using Neural Networks Pierre Lauret, Frédéric Heymes, Laurent Aprin, Anne Johannet, Gilles Dusserre, Laurent Munier, Emmanuel Lapébie Institute of Risk Science (ISR), Ecole des Mines d’Alès, Alès, France Centre des Matériaux de Grande Diffusion (CMGD), Ecole des Mines d’Alès, Alès, France CEA, DAM, GRAMAT, F-46500 Gramat, France *...
Probabilistic modeling is cyclical: we specify a model, infer its posterior, and evaluate its performance. Evaluation drives the cycle, as we revise our model based on how it performs. This requires a metric. Traditionally, predictive accuracy prevails. Yet, predictive accuracy does not tell the whole story. We propose to evaluate a model through posterior dispersion. The idea is to analyze how...
This article presents the approach and current findings of the EO2HEAVEN project, in particular from the Saxony Case Study. The aim of the Case Study is the conceptual design of a Spatial Information Infrastructure for better understanding the complex relationship between ambient air quality and its influence on the human health. This includes air quality modelling and a statistical analysis of...
This manuscript presents an overview of the current experimental situation regarding nucleon decay and the measured flux of atmospheric neutrinos. Previous and on-going experiments are reviewed, the data are presented, and new outstanding questions are posed. The SuperKamiokande project is described and its expected sensitivity for improving measurements of the nucleon lifetime and the atmosphe...
Applications of Lagrangian dispersion modeling to the analysis of changes in the specific absorption of elemental carbon J. C. Doran, J. D. Fast, J. C. Barnard, A. Laskin, Y. Desyaterik, M. K. Gilles, and R. J. Hopkins Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington, USA Lawrence Berkeley National Laboratory, Berkeley, CA, USA Received: 25 September 2007 – Accepted: 10...
The successful launch of the Landsat 8 satellite with two thermal infrared bands on February 11, 2013, for continuous Earth observation provided another opportunity for remote sensing of land surface temperature (LST). However, calibration notices issued by the United States Geological Survey (USGS) indicated that data from the Landsat 8 Thermal Infrared Sensor (TIRS) Band 11 have large uncerta...
The objective of this study was to investigate the effect of potassium zeolite on ammonium ion sorption and retention in a saturated sandy loam soil in laboratory conditions with four treatments of 0, 2, 4 and 8 g zeolite per kg soil. The study was conducted as a completely randomized block design. Simulation of ammonium ion leaching was performed using Hydrus-1D model in the soil columns. Ammo...
As part of a study using lake sediments to determine the extent and causes of human impacts to lakes along an east–west transect following the Yangtse River, sediment cores were taken from Taihu in eastern China. Previous studies have focussed on the impacts of direct inputs of pollutants from municipal and industrial wastewater but little work has been undertaken on trends in atmospheric depos...
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