Results 81 to 90 of about 12,097 (212)

Geostatistical analysis of the spatial distribution of mycotoxin concentration in bulk cereals [PDF]

, 2009
Deoxynivalenol (DON) and ochratoxin A (OTA) in agricultural commodities present hazards to human and animal health. Bulk lots are routinely sampled for their presence, but it is widely acknowledged that designing sampling plans is particularly ...
Origgi, Simona, Weightman, R. M., Magan, Naresh, Weightman, Richard Mark, Parsons, David J., Origgi, S., Rivas Casado, Monica   +6 more
core   +1 more source

Temporal Replication and Sampling Efficiency in High‐Frequency Autonomous and Manual eDNA Sampling

Environmental DNA, Volume 8, Issue 5, September‐October 2026.
Accounting for temporal correlation in eDNA time series can improve the accuracy of ecological inference about the influence of hydrological covariates on eDNA concentration. Further, we found that MCE filters were more efficient than PES filters. ABSTRACT Environmental DNA (eDNA) sampling is a valuable tool for ecological research, but its reliability
Ben C. Augustine, Patrick R. Hutchins, Scott D. George, Chany C. Huddleston Adrianza, Michael J. Darling, Thomas R. Sadekoski, Adam J. Sepulveda   +6 more
wiley   +1 more source

Geoestatística no estudo de modelagem temporal da precipitação Geostatistics in the temporal modeling study of precipitation

Revista Brasileira de Engenharia Agrícola e Ambiental, 2011
A análise geoestatística é uma poderosa ferramenta utilizada em estudos de dependência espacial. No que tange à dependência temporal, poucas são as análises realizadas com essa metodologia.
André Q. de Almeida, Aristides Ribeiro, Yhasmin G. Paiva, Nilton Jr. L. Rascon, Evaldo P. Lima   +4 more
doaj  

Enhancing Identifiable Variational Autoencoder in the Presence of Missing Values and Auxiliary Covariates for Spatio‐Temporal Ozone Modeling

Environmetrics, Volume 37, Issue 6, September 2026.
ABSTRACT The formation of ground‐level ozone follows complex nonlinear photochemical processes that depend on multiple environmental factors and have strong spatio‐temporal structures. Environmental data used to study these dynamics usually originate from multiple sources, including in situ monitoring stations and satellite observations.
Mika Sipilä, Sandra De Iaco, Claudia Cappello, Klaus Nordhausen, Monica Palma, Sara Taskinen   +5 more
wiley   +1 more source

Implications of heterogeneity on transport simulations at large scale: the Morroa aquifer case

Revista Facultad de Ingeniería Universidad de Antioquia, 2014
The Morroa aquifer located in Sucre state (northern Colombia) represents the exclusive source of water supply for nearly 500.000 people, including the capital of the state Sincelejo.
Anibal Jose Pérez-García, Oscar García-Cabrejo, Nelson Obregón-Neira   +2 more
doaj   +1 more source

Stationary Subspace Analysis for Spatial Data

Environmetrics, Volume 37, Issue 6, September 2026.
ABSTRACT Stationary subspace analysis (SSA) is a blind source separation framework that decomposes linearly mixed multivariate data into stationary and nonstationary components. We extend SSA to spatially indexed data by introducing spatial stationary subspace analysis (spSSA), which explicitly accounts for spatial dependence.
Perttu Saarela, Klaus Nordhausen, Jaakko Pere, Anne M. Ruiz   +3 more
wiley   +1 more source

Mathematical Genesis of the Spatio-Temporal Covariance Functions [PDF]

Obtaining new and flexible classes of nonseparable spatio-temporal covariances have resulted in a key point of research in the last years within the context of spatiotemporal Geostatistics.
Montero, JM, Fernández-Avilés, G, Mateu, J   +2 more
core  

Linear Water Erosion in the State of Mato Grosso (Brazil): Spatial Analysis and Identification of Critical Areas

Earth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Mapping linear water erosion across Mato Grosso revealed spatially concentrated critical areas rather than a uniform distribution. Erosion foci were more frequent in environmentally fragile landscapes and areas of land‐use conflict, highlighting where monitoring and soil‐conservation actions should be prioritized.
Kássio Samay Ribeiro Tavares, Grace Bungenstab Alves, Selma Simões De Castro   +2 more
wiley   +1 more source

Heterogeneity and Controlling Mechanisms of Soil Organic Carbon Stocks Across Erosion Zones in China Under Future Climate Scenarios

Land Degradation &Development, Volume 37, Issue 15, Page 11061-11076, September 2026.
ABSTRACT Soil organic carbon (SOC), as a key indicator of global carbon cycling and climate change response, plays a critical role in regional ecological security and agricultural sustainability. This study employs three machine learning models including the LightGBM, XGBoost, and random forest to simulate the spatial distribution of topsoil SOC stocks
Xinxin Jin, Xintong Liu, Qianlai Zhuang, Zijiao Yang, Zicheng Wang, Chen Li, Shuai Wang, Yang Wang   +7 more
wiley   +1 more source

Study of Three-Dimensional Digital Core Reconstruction Based on Multiple-Point Geostatistics in a Cylindrical Coordinate System

IEEE Access, 2019
Image inpainting and the extraction of different components from the electrical image log images are performed. After generating the training image, determining the appropriate template, multigrid, and event, calculating the conditional probability ...
Xiaoling Xiao, Xiang Zhang, Jing Zhang, Xiong Luo   +3 more
doaj   +1 more source