Results 1 to 10 of about 4,853,850 (241)

A Probability Co-Kriging Model to Account for Reporting Bias and Recognize Areas at High Risk for Zebra Mussels and Eurasian Watermilfoil Invasions in Minnesota. [PDF]

open access: yesFront Vet Sci, 2017
Zebra mussels (ZMs) (Dreissena polymorpha) and Eurasian watermilfoil (EWM) (Myriophyllum spicatum) are aggressive aquatic invasive species posing a conservation burden on Minnesota.
Kanankege KST   +3 more
europepmc   +2 more sources

Spatial mapping of soil chemical properties using multivariate geostatistics. A study from cropland in eastern Croatia [PDF]

open access: yesJournal of Central European Agriculture, 2021
The spatial variability of soil chemical properties is affected by factors of soil formation and human activities. Understanding their spatial variability will improve agricultural production, reduce environmental problems (e.g., soil pollution, offsite ...
Igor Bogunovic   +3 more
doaj   +1 more source

Mapping forest aboveground carbon stock of combined stratified sampling and RFRK model with mean annual temperature and precipitation. [PDF]

open access: yesSci Rep
Accurately estimating forest aboveground carbon stock (ACS) is essential for achieving carbon neutrality. At present, most non-parametric models still have errors in estimating carbon stock in regions.
Peng M   +5 more
europepmc   +2 more sources

Estimating precipitation intensity and its spatial distribution based on fractal theory (Case study: Tireh-Borujerd watershed) [PDF]

open access: yesمدل‌سازی و مدیریت آب و خاک, 2023
Introduction Estimating the amount and intensity of precipitation and its spatial distribution in various return periods is necessary for flood estimation hydrological models.
Tayebeh Sepahvabd   +3 more
doaj   +1 more source

Cold Season’s Air Temperature Geostatistical Modeling: Considering the Landsat Thermal Band and Snow Cover Area [PDF]

open access: yesجغرافیا و مخاطرات محیطی, 2018
Providing climatic data like temperature in good spatial resolution is a key requirement for many geographical, ecological and bioclimatic research. With this in mind, various related studies use thermal remote sensing images as auxiliary data to enhance
مسعود مینائی
doaj   +1 more source

Precipitation interpolation using digital terrain model and multivariate regression in hilly and low mountainous areas of Hungary

open access: yesHungarian Geographical Bulletin, 2021
The relationship between precipitation and elevation is a well-known topic in the field of geography and meteorology. Radar-based precipitation data are often used in hydrologic models, however, they have several inaccuracies, and elevation can be one of
Tamás Schneck   +2 more
doaj   +1 more source

Spatial prediction of soil electrical conductivity using soil axillary data, soft data derived from general linear model and error measurement [PDF]

open access: yesDesert, 2020
Indirect measurement of soil electrical conductivity (EC) has become a major data source in spatial/temporal monitoring of soil salinity. However, in many cases, the weak correlation between direct and indirect measurement of EC has reduced the accuracy ...
N. Hamzehpour, M. Rahmati, B. Roohzad
doaj   +1 more source

Multi-fidelity sequential constraint updating optimization approach based on confidence intervals and its application

open access: yesZhongguo Jianchuan Yanjiu, 2021
Objectives This study addresses the problem of time-consuming simulation in the optimization design of underwater structures. Focusing on time-consuming and non-time-consuming targets and constraints, it proposes an optimization method for constrained ...
Jiachang QIAN   +2 more
doaj   +1 more source

An Extended Kriging Method to Interpolate Near-Surface Soil Moisture Data Measured by Wireless Sensor Networks

open access: yesSensors, 2017
In the practice of interpolating near-surface soil moisture measured by a wireless sensor network (WSN) grid, traditional Kriging methods with auxiliary variables, such as Co-kriging and Kriging with external drift (KED), cannot achieve satisfactory ...
Jialin Zhang   +5 more
doaj   +1 more source

Fast Performance Modeling across Different Database Versions Using Partitioned Co-Kriging

open access: yesApplied Sciences, 2021
Database systems have a large number of configuration parameters that control functional and non-functional properties (e.g., performance and cost). Different configurations may lead to different performance values.
Rong Cao   +6 more
doaj   +1 more source

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