Results 11 to 20 of about 923 (195)

Geostatistical Spatio-Time model of crime in el Salvador: Structural and Predictive Analysis [PDF]

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2011
Today, to study a geospatial and spatio-temporal phenomena requires searching statistical tools that enable the analysis of the dependency of space, time and interactions.
Welman Rosa Alvarado
doaj   +2 more sources

Using Machine Learning Algorithms to Estimate Soil Organic Carbon Variability with Environmental Variables and Soil Nutrient Indicators in an Alluvial Soil

open access: yesLand, 2020
Soil organic carbon (SOC) is an important indicator of soil quality and directly determines soil fertility. Hence, understanding its spatial distribution and controlling factors is necessary for efficient and sustainable soil nutrient management. In this
Kingsley JOHN   +5 more
doaj   +1 more source

Assessing the role of spatial externalities in the survival of Italian innovative startups

open access: yesRegional Science Policy &Practice, EarlyView., 2023
Abstract The paper provides novel empirical evidence about the effects of spatial externalities on the survival of innovative startups in Italy. Using geocoded firm‐level data, we build micro‐geographic measures of specialization and diversity that are robust to the modifiable areal unit problem.
Diego Giuliani   +4 more
wiley   +1 more source

Spatial-temporal analysis of water requirements of coffee crop in Minas Gerais State, Brazil Análise espaço-temporal da demanda hídrica do cafeeiro, no Estado de Minas Gerais

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2010
Scientific investigations about crop water requirements are of fundamental importance to the irrigation process. The main objective of this paper is to analyze and to map water requirements of coffee crop in Minas Gerais State, Brazil.
Luis C. de A. Lemos Filho   +3 more
doaj   +1 more source

The application of the geo-accumulation index and geostatistical methods to the assessment of forest soil contamination with heavy metals in the Babia Góra National Park (Poland) [PDF]

open access: yesArchives of Environmental Protection, 2020
The aim of this study was the application of the geo-accumulation index and geostatistical methods to the assessment of forest soil contamination with heavy metals in the Babia Góra National Park (BGNP).
Stanisław Łyszczarz   +2 more
doaj   +1 more source

SPATIAL VARIABILITY MAPPING OF SUGARCANE QUALITATIVE ATTRIBUTES [PDF]

open access: yesEngenharia Agrícola, 2019
Spatial variability evaluation of qualitative attributes can be used as an excellent strategy to design forms of intervention that result in better crop profitability for some agricultural crops, for example, sugarcane.
Marcos N. Ferraz   +3 more
doaj   +1 more source

Prediction of spatial distribution for some land use allometric characteristics in land use planning models with geostatistic and Geographical Information System (GIS) (Case study: Boein and Miandasht, Isfahan Province, Iran) [PDF]

open access: yes, 2016
Although traditional census can present unbiased information about different land uses, it is spatial independent and do not present particular  information about spatial distribution of studied characteristic.
Peykanpourfard, Parvaneh   +4 more
core   +1 more source

Soil Moisture Mapping in an Arid Area Using a Land Unit Area (LUA) Sampling Approach and Geostatistical Interpolation Techniques

open access: yesISPRS International Journal of Geo-Information, 2016
Soil moisture (SM) plays a key role in many environmental processes and has a high spatial and temporal variability. Collecting sample SM data through field surveys (e.g., for validation of remote sensing-derived products) can be very expensive and time ...
Saeid Gharechelou   +3 more
doaj   +1 more source

Investigating the spatial pattern of total selenium concentration in soil surface in Central Iran (case study: Isfahan Province) [PDF]

open access: yesعلوم محیطی, 2020
Introduction: The study of the spatial distribution of heavy metals is very important in land management and planning. The geostatistics theory is used to estimate spatial variables in unmeasured points.
Somayeh Sadr, Zahra Movahedi Rad
doaj   +1 more source

Comparing Different Approaches - Data Mining, Geostatistic, and Deterministic Pedology - to Assess the Frequency of WRB Reference Soil Groups in the Italian Soil Regions [PDF]

open access: yes, 2014
The assessment of class frequency in soil map legends is affected by uncertainty, especially at small scales, where generalization is larger. The aim of this study was to test the hypothesis that data mining or geostatistic techniques provide better ...
FANTAPPIE', Maria   +4 more
core   +1 more source

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