نتایج جستجو برای: atmospheric dispersion

تعداد نتایج: 137036  

2015
Lijun Hao Zhetao Xiao Qiusheng Yang

In the developing process of urbanization in China, PM2.5 pollution has become a problem that must be faced. Greenway, especially those in the community, is the important green infrastructure to improve ecological environment in urban areas, which plays a crucial role in PM2.5 reduction. With basic cognitive analysis on definitions and characteristics of community greenway and PM2.5, this paper...

2008
S. Andronopoulos I. Mavroidis A. Venetsanos J. G. Bartzis

This paper presents computational simulations of atmospheric dispersion experiments conducted around isolated obstacles in the field. The computational tool used for the simulations was the code ADREA-HF, which was especially developed for the simulation of the dispersion of positively or negatively buoyant gases in complicated geometries. The field experiments simulated involve a single cylind...

2004
Jonathan Heathcote Kjetil Storesletten Giovanni L. Violante

This paper develops a series of simple heterogeneous-agents economies in order to study the welfare implications of labor market inequality. We perform two types of welfare calculations. First we compute the welfare cost of a rise in labor market risk, given a particular asset market structure (complete markets, incomplete markets, autarky). Second, we compute the expected gain from completing ...

2007
Stamatis Zoras Athanasios G. Triantafyllou

INTRODUCTION The objective of this study is the evaluation of model sensitivity due to grid size and resolution variation in complex terrain by the design of a screening experiment. Grid calibration, that in many cases involves the removal of complexities and insignificant terms, is the starting point in reducing meteorologically affected factors of uncertainty before any pollution predictions ...

2006
Yaping Xiao Daniel J. Jacob Solene Turquety

Yaping Xiao, Daniel J. Jacob, Solene Turquety Department of Earth and Planetary Sciences and Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA Short title: global acetylene budget and C2H2-CO correlation

2008
Giorgio Giacomelli

The ANTARES underwater neutrino telescope, at a depth of 2475 m in the Mediterranean Sea, near Toulon, is taking data in its final configuration of 12 detection lines. Each line is equipped with 75 photomultipliers (PMT) housed in glass pressure spheres arranged in 25 triplets at depths between 100 and 450 m above the sea floor. The PMTs look down at 45 to have better sensitivity to the Cherenk...

Journal: :IJISCRAM 2013
S. Bogatov A. Kiselev

Methodical approaches used in the computational model “PROLOG” are given in the paper. This model is intended for assessing radiological situations and an efficiency of counter measures after short term radioactive releases. Basic local Gaussian dispersion algorithm is supplemented with modules for assessing a plume rise, dry deposition velocities, effect of buildings and complex terrain, etc. ...

Journal: :Logic Journal of the IGPL 2012
Angel Arroyo Emilio Corchado Verónica Tricio

Multidisciplinary research into statistical and soft computing models is detailed that analyses data on inmissions of atmospheric pollution in urban areas. The research analyzes the impact on atmospheric pollution of an extended bank holiday weekend in Spain. Levels of atmospheric pollution are classified in relation to the days of the week, seeking to differentiate between working days and non...

2005
Alena Bicakova

This paper focuses on the differences in earnings and labor force status of low-skilled prime age men in France, the United Kingdom, and the United States at the end of the 20th century, and their relation to the differences in wage dispersion. In the UK and the US, where the bottom of the wage distribution is more dispersed, the inactivity rate (sometimes called the not-in-labor force rate) am...

2007
DAVID HARKRIDER

]Komogeneous wave guide theory is used to derive dispersion curves, vertical pressure distributions, and synthetic baregrams for atmospheric waves. A complicated mode structure is found involving both gravity and acoustic waves. Various models of the atmosphere are studied to explore seasonal and geographic effects on pulse propagation. The influence of different zones in the atmosphere on the ...

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