Results 41 to 50 of about 3,490,280 (180)

Validation of Multi-Temporal Land-Cover Products Considering Classification Error Propagation

open access: yesRemote Sensing
Reducing the lag in the accuracy assessment of multi-temporal land-cover products has been a hot research topic. By identifying the changed strata, the annual accuracy in multi-temporal products can be quickly evaluated.
Shicheng Liao   +6 more
doaj   +1 more source

Trends in Remote Sensing Accuracy Assessment Approaches in the Context of Natural Resources

open access: yesRemote Sensing, 2019
The utility of land cover maps for natural resources management relies on knowing the uncertainty associated with each map. The continuous advances typical of remote sensing, including the increasing availability of higher spatial and temporal resolution
Lucia Morales-Barquero   +3 more
doaj   +1 more source

Long-term vegetation monitoring for different habitats in floodplains [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2013
A floodplain-restoration project along the Danube between Neuburg and Ingolstadt (Germany) aims to bring back water and sediment dynamic to the floodplain.
LANG Petra   +4 more
doaj   +1 more source

Post Enumeration Survey of the 2001 Portuguese Population and Housing Censuses

open access: yesRevstat Statistical Journal, 2008
Within the framework of the quality control and evaluation program for the Portuguese 2001 Census, the Portuguese statistical office (INE) conducted a Post Enumeration Survey (PES) to measure quality.
Pedro Simões Coelho   +1 more
doaj   +1 more source

SAMPLING DESIGN FOR WATER QUALITY MONITORING IN MARINE RESERVE : A STUDY CASE AT BANDA SEA CONSERVATION PARK

open access: yesJournal of Natural Resources and Environmental Management, 2018
Design of sampling site water quality monitoring at marine reserve is critical, to optimize the effectiveness of periodic assessment. A simple stratified systematic design, that been usually used in most of monitoring anlaysis, may not maximize the ...
Hedi Indra Januar
doaj   +1 more source

Sampling statistics in the Atlantic menhaden fishery [PDF]

open access: yes, 1984
Atlantic menhaden, Brrvoortia tyrannus, the object of a major purse-seine fishery along the U.S. east coast, are landed at plants from northern Florida to central Maine.
Chester, Alexander J.
core  

Application of black-box models based on artificial intelligence for the prediction of chlorine and TTHMs in the trunk network of Bogotá, Colombia

open access: yesJournal of Hydroinformatics, 2023
The chlorine and total trihalomethane (TTHM) concentrations are sparsely measured in the trunk network of Bogotá, Colombia, which leads to a high uncertainty level at an operational level.
Laura Enriquez   +2 more
doaj   +1 more source

Camera trap sampling protocols for open landscapes: The value of time‐lapse imagery

open access: yesConservation Science and Practice
Camera traps (CT) have been used to study a wide diversity of wildlife around the world. However, despite their widespread use, standardized protocols are lacking, potentially leading to reduced efficiency and inhibiting study comparisons ...
Scott Leorna, Todd Brinkman
doaj   +1 more source

Effect of the colour of pitfall traps on their capture efficiency of carabid beetles (Coleoptera: Carabidae), spiders (Araneae) and other arthropods

open access: yesEuropean Journal of Entomology, 2010
Pitfall trapping is one of the most commonly used methods of sampling ground-dwelling arthropods. There are many studies on the effect of design of pitfall traps on their capture efficiency but, so far, none on the influence of the colour of the pitfall ...
Sascha BUCHHOLZ   +3 more
doaj   +1 more source

Bayesian Estimation Under Informative Sampling

open access: yes, 2016
Bayesian analysis is increasingly popular for use in social science and other application areas where the data are observations from an informative sample.
Savitsky, Terrance D., Toth, Daniell
core   +1 more source

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