نتایج جستجو برای: because some environmental phenomena are inherently spatial
تعداد نتایج: 6160429 فیلتر نتایج به سال:
n this paper, a mathematical model has been derived to predict the granulation time of anaerobic sludge in UASB reactors. In the proposed model, some physical, chemical and biological parameters affecting the granulation phenomena have been considered. To validate the model, 12 pilot-scale experiments in 4 UASB reactors are carried out and the results are discussed here. The reactors are starte...
chapter two presents three m-admissible function algebras ab, bd, and sl, to construct the universal abelian, band, and semilattice compactifications, respectively. the main results are (11.3), (12.3), and (12.4). some inclusion relationships between these function algebras and the other well-known ones, presented in section 8, are made via the devico of compactifications. chpter three is about...
ecological destruction in human-dominated landscapes has significant impacts on environment sustainability internationally. landscape planning can play a role in mitigating the effects of human-related activities. one element of landscape planning involves the analysis of the biological, spatial and social arrangement of areas in an urban environment and identifying characteristics that are und...
In this paper, we study principles and techniques of Parallel Discrete Event Simulation that are used for the simulation of environmental complex phenomena on parallel computers. The rise of new concepts in this domain allows to develop tools for the study of such systems. Among them, the paradigm of cellular automata facilitates the building of spatial models and the integration of parallel te...
Todays, urban distressed textures are considered as a vital concern of managers, particularly in large cities. These areas, which also appear in official parts of cities, are vulnerable because of prospective problems. Lack of proper accessibility, services, facilities, and infrastructures, as well as social, economic, environmental and spatial problems, are key problems of these areas. Althoug...
extended abstract introduction the widespread and great inequalities in income generation, commonwealth, job opportunities and developmental facilities between urban and rural areas, have leaded the rural population towards the decline and in some instances the rural exodus. additionally, the rural poverty and deprivation has also caused major urban crisis, due to the vast rural migration and ...
Abstract With the rapid growth of population and urbanization since the last century, the complexity and understanding of the spatial organization of the city, as well as the ability to predict urban events in its spaces, have become difficult and in some cases impossible. Karaj metropolis is one of the major metropolitan areas of Iran that has been experiencing rapid population growth and thi...
spatial-temporal modeling of air pollutants, ground-level ozone concentrations in particular, has attracted recent attention because by using spatial-temporal modeling, can analyze, interpolate or predict ozone levels at any location. in this paper we consider daily averages of troposphere ozone over tehran city. for eliminating the trend of data, a dynamic linear model is used, then some featu...
The rapid growth in the number of multilateral environmental agreements (MEAs, or “environmental treaties”) since the 1972 Stockholm Conference on the Environment has been an encouraging sign of international commitment to protecting the environment. The proliferation of treaties, up from 140 in 1970 to over 350 today (IUCN 1998), has resulted in an attendant need for spatial data on the health...
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