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| Registros recuperados: 41 | |
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| Biagetti, Stefano; CaSEs - Complexity and Socio-Ecological Dynamics group; Universitat Pompeu Fabra, Department of Humanities; School of Geography, Archaeology, and Environmental Studies, University of the Witwatersrand; stefano.biagetti@upf.edu; Crema, Enrico R.; CaSEs - Complexity and Socio-Ecological Dynamics group; Universitat Pompeu Fabra, Department of Humanities; UCL Institute of Archaeology; enrico.crema@upf.edu. |
| We examined the settlement structure from the Kel Tadrart Tuareg, a small pastoral society from southwest Libya. Our objective was to apply spatial analysis to establish the statistical significance of specific patterns in the settlement layout. In particular, we examined whether there is a separation between domestic and livestock spaces, and whether particular residential features dedicated to guests are spatially isolated. We used both established statistical techniques and newly developed bespoke analyses to test our hypotheses, and then discuss the results in the light of possible applications to other case studies. |
| Tipo: Peer-Reviewed article |
Palavras-chave: Campsites; Kel Tadrart Tuareg; Settlement layout; Spatial analysis. |
| Ano: 2016 |
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| Sassi, Maria; Pecci, Francesco. |
| In the light of the reaffirmed importance of agricultural convergence within the integration process, the paper provides a preliminary investigation of the impact of the enlargement from the EU-15 to the EU-27 on agricultural real b-convergence and, with reference to the EU-27, of its relationship with economic catching-up process. The empirical analysis, based on a GWR approach, takes into account the regional spatial interdependences in estimating local parameters of convergence. The approach adopted allows to overcome the contradictory results from OLS estimations and parametric spatial econometric models pointed out by the literature and primarily connected to the existence of no unique convergence rate all over Europe. The analysis is based on a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Regional convergence; Spatial analysis; GWR approach; International Relations/Trade. |
| Ano: 2008 |
URL: http://purl.umn.edu/44459 |
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| Kingwell, Ross S.; Harris-Adams, Keely. |
| If agriculture is included in an Australian emissions trading scheme then it may face from 2015 at the earliest, a price for its greenhouse gas emissions; and thereby have incentives to offset and lessen its emissions. Yet because there is currently little understanding of the spatial pattern of emissions in agricultural regions of Australia, the extent of the challenge the sector faces in reducing its emissions is not fully recognised. To improve our understanding, this study uses the National Greenhouse Accounts methodology to estimate the spatial and temporal patterns of agricultural emissions since 1990 in the key agricultural region in Australia’s southwest. This region generates almost 40 percent of the nation’s winter crop production and supports... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Greenhouse gas emissions; Spatial analysis; Agriculture; Offsets; Sequestration. |
| Ano: 2009 |
URL: http://purl.umn.edu/48161 |
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| Padilla-Bernal, Luz E.; Thilmany, Dawn D.; Loureiro, Maria L.. |
| Fresh tomato trade between the United States and Mexico grew significantly during the 1990s. Moreover, major structural changes in U.S. produce marketing channels increase the complexity of conducting analyses to delineate the impact of liberalized trade. Following the work of Barrett, Li, and Bailey, this study implements a mixed distribution to examine spatial-price relationships between major shipping points and terminal markets for Mexican imported, and Florida and California tomatoes. Although markets are often efficiently integrated, results suggest strategic pricing and product shipments may exist and vary among terminal markets in Los Angeles, Boston, and Chicago. |
| Tipo: Journal Article |
Palavras-chave: Market integration; North American tomato trade; Spatial analysis; Tomato markets; Industrial Organization. |
| Ano: 2003 |
URL: http://purl.umn.edu/31061 |
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| Fernández, M.. |
| En este estudio se presenta el análisis de la relación entre los valores de densidad de hembras maduras y de hembras impregnadas de langostino Pleoticus muelleri (Bate, 1888) del Golfo San Jorge y las variables ambientales. Los datos analizados provienen de las campañas de investigación del INIDEP OB-03/08 y OB-01/09 realizadas en noviembre-diciembre de 2008 y en enero-febrero de 2009, respectivamente; en el área comprendida entre las latitudes 43º 20´ S y 47º 00´ S y el meridiano 64º 00´ W y la costa. Se consideraron las variables biológicas: densidad de hembras maduras y de hembras impregnadas de langostino, por rango de tallas y las variables ambientales: profundidad, temperatura y salinidad de agua de fondo así como, la diferencia de temperatura y de... |
| Tipo: Theses and Dissertations |
Palavras-chave: Females; Sexual maturity; Spawning grounds; Environmental conditions; Spatial analysis; Statistical models; Shrimp fisheries. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/5159 |
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| Ghini,Raquel; Hamada,Emília; Bettiol,Wagner. |
| Human activities are altering greenhouse gas concentrations in the atmosphere and causing global climate change. In the near future, there will certainly be changes in the Brazilian phytosanitary scenario attributed to global climate change. The impacts of climate change can be positive, negative or neutral, since these changes can decrease, increase or have no impact on diseases, depending on each region or period. These impacts will also be observed on plants and other organisms as well as on other agroecosystem components. However, these impacts are not easily determined, and consequently, specialists from several areas must go beyond their disciplinary boundaries and placing the climate change impacts in a broader context. This review focuses on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CO2; Global climate change; Global warming; Spatial analysis; Control. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700015 |
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| Hinckley, Sarah; Parada, Carolina; Horne, John K.; Mazur, Michael; Woillez, Mathieu. |
| Biophysical individual-based models (IBMs) have been used to study aspects of early life history of marine fishes such as recruitment, connectivity of spawning and nursery areas, and marine reserve design. However, there is no consistent approach to validating the spatial outputs of these models. In this study, we hope to rectify this gap. We document additions to an existing individual-based biophysical model for Alaska walleye pollock (Gadus chalcogrammus), some simulations made with this model and methods that were used to describe and compare spatial output of the model versus field data derived from ichthyoplankton surveys in the Gulf of Alaska. We used visual methods (e.g. distributional centroids with directional ellipses), several indices (such as... |
| Tipo: Text |
Palavras-chave: Mathematical models; Statistical analysis; Marine fish; Spatial distributions; Spatial analysis; Individual-based models; USA gulf of alaska; Walleye pollock. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00327/43775/43332.pdf |
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| Storck,Lindolfo; Lopes,Sidinei José; Cargnelutti Filho,Alberto; Lúcio,Alessandro Dal'Col; Toebe,Marcos. |
| The objective of this work was to verify whether the use of the Papadakis method in competing corn hybrid trials would lead to modifications in the validity of assumptions for the mathematical model of variance analysis and for experimental precision indicators. To achieve this, corn-grain-yield data from 25 competing corn hybrid trials, performed in a design of complete randomized blocks, were examined. Each trial entailed verification of assumptions, variance analysis, hypothesis tests, statistics to identify experimental precision, and analysis using the Papadakis method. This method improves experimental precision indicators. The assumptions were valid for both analysis types (without Papadakis and with Papadakis). Mean figures for the Fasoulas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Assumptions; Precision measurements; Spatial analysis. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000600015 |
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| Lim, Aaron; Wheeler, Andrew J.; Arnaubec, Aurelien. |
| Framework-forming cold-water corals (CWC's) such as Lophelia pertusa and Madrepora oculata generate positive topographic features on the seabed called CWC mounds. In the North East Atlantic, CWC mounds have been studied in detail and reveal heterogeneous spatial on-mound organisation of coral patches. Many of these studies are limited by a paucity of remotely-sensed and video imagery at an appropriate resolution and coverage. This study is the first attempt to video mosaic an entire CWC mound (the Piddington Mound of the Moira Mounds, Porcupine Seabight, Irish margin). The mosaic is divided into 18,980 0.25 m2 cells with a manual classification applied to each within a geographic information system (GIS). Geospatial analysis shows that cell distribution is... |
| Tipo: Text |
Palavras-chave: Cold-water coral; Habitat mapping; Spatial analysis; Sediments; Fades distribution. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00390/50129/50732.pdf |
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| Burnett, Kimberly M.; Kaiser, Brooks A.; Roumasset, James A.. |
| The optimal size and location of an invasive species population depend upon spatially differentiated biological growth, economic costs, and damages. Although largely absent from most economic models, spatial considerations matter because the likelihood and magnitude of the invasion vary spatially and the threatened assets may be unevenly distributed across space. We map the current and future populations of an invasive species, Miconia calvescens, on Oahu, Hawaii, and the potential damages to water quantity, quality, and endangered-species habitat, and weigh these against treatment costs. We find that optimal densities vary from approximately 1% to 18% cover throughout the island. |
| Tipo: Journal Article |
Palavras-chave: Geographical Information Systems; Hawaii; Invasive species; Miconia calvescens; Oahu; Spatial analysis; Watershed; Q23; Q25; Q28; Q51; Q57. |
| Ano: 2007 |
URL: http://purl.umn.edu/37274 |
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| Registros recuperados: 41 | |
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