نتایج جستجو برای: productivity zone and gis models
تعداد نتایج: 16959967 فیلتر نتایج به سال:
The functionality of spatial process analysis is the foundation of GIS’s comprehensive application . To realize such a goal. it is desirable that not only the data model of GIS can represent the datasets needed by spatial process models, but also GIS is able to do multitemporal spatial analysis. But most of current GISs are static in essence, they cannot represent temporal information and tempo...
In this paper, we assume a firm tries to determine the optimal price, vehicle route and location of the depot in each zone to maximise its profit. Therefore, in this paper zone pricing is studied which contributes to the literature of location-routing problems (LRP). Zone pricing is one of the most important pricing policies that are prevalently used by many companies. The proposed problem is v...
Changes in marine net primary productivity (PP) and export of particulate organic carbon (EP) are projected over the 21st century with four global coupled carbon cycleclimate models. These include representations of marine ecosystems and the carbon cycle of different structure and complexity. All four models show a decrease in global mean PP and EP between 2 and 20% by 2100 relative to preindus...
the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...
The creation of 3D models of ancient sites has often been focused on their major monuments only. This is logical, given the high costs of traditional 3D modeling. Thus, to efficiently reconstruct entire sites like cities, a large number of domestic buildings and workshops need to be generated automatically. Their appearance should follow the aesthetic and statutory architectural rules of the co...
Geographic Information Systems (GIS) is an innovative mapping technology used around the world to identify boundaries of geographic features, infrastructure, and myriad uses across the landscape. Historically a land-based application, the use of GIS in coastal ecosystems is growing (Nath et al. 2000, Babcock et al.2005, Dempster and Sanchez-Jerez 2008). Coastal areas are heavily used for shippi...
this study attempts to investigate the effect of peers’ revision in comparison to that of the teacher, and whether peers’ comments and teachers’ comments facilitate students’ revision? if yes, which one is more effective? also attempts have been made to see which aspects of language are more highlighted by peers versus teachers when commenting. besides, it is investigating the student’s attitud...
We assembled a dataset of 14C-based productivity measurements to understand the critical variables required for accurate assessment of daily depth-integrated phytoplankton carbon fixation (PP,,) from measurements of sea surface pigment concentrations (C,,,). From this dataset, we developed a light-dependent, depth-resolved model for carbon fixation (VGPM) that partitions environmental factors a...
one of the cultural characteristics of eastern zone at central part of zagros range during 3rd millennium bc and at early bronze age is the extension of the related habitats to yaniq culture (ancient city near abhar) in this region. within field study conducted in 2008 in the plains covering central zagros eastern side that is situated in alvan basin, we managed to identify more than habitats r...
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