Results 21 to 30 of about 1,881,033 (281)

Sample Out-of-Sample Inference Based on Wasserstein Distance [PDF]

open access: yesOperations Research, 2021
Financial institutions make decisions according to a model of uncertainty. At the same time, regulators often evaluate the risk exposure of these institutions using a model of uncertainty, which is often different from the one used by the institutions. How can one incorporate both views into a single framework? This paper provides such a framework. It
Jose Blanchet, Yang Kang
openaire   +3 more sources

AbundanceR: A Novel Method for Estimating Wildlife Abundance Based on Distance Sampling and Species Distribution Models

open access: yesLand, 2022
Appropriate field survey methods and robust modeling approaches play an important role in wildlife protection and habitat management because reliable information on wildlife distribution and abundance is important for conservation planning and actions ...
Xinhai Li   +4 more
doaj   +1 more source

Density and Abundance Estimation of Amazonian River Dolphins: Understanding Population Size Variability

open access: yesJournal of Marine Science and Engineering, 2021
The dolphins Inia geoffrensis—boto and Sotalia fluviatilis—tucuxi are threatened cetaceans inhabiting river ecosystems in South America; population numbers are still lacking for many areas.
Mariana Paschoalini   +10 more
doaj   +1 more source

Egyptian Vulture in the Karatau Mountains and Adjacent Territories, Kazakhstan

open access: yesПернатые хищники и их охрана, 2022
Egyptian Vulture (Neophron percnopterus) is a globally threatened species. The northernmost limit of its breeding range is located in Kazakhstan and is fragmented into three large enclaves. The Karatau range is one such enclave. It was previously assumed
Igor V. Karyakin   +5 more
doaj   +1 more source

Advanced Distance Sampling: Estimating Abundance of Biological Populations [PDF]

open access: yes, 2006
This book is edited by recognized leading experts in the field. Distance sampling methodology has been rapidly evolving since 1993 when the first four editors (STB, DRA, KPB, and JLL) published the book Distance Sampling.
Alpizar-Jara
core   +1 more source

Adaptive k-tree sample plot for the estimation of stem density: An empirical approach

open access: yesJournal of Forest Science, 2018
Available budgets for the inventory of non-commercial woodlands are small. Therefore, there has been increased interest in using distance methods, such as k-tree sampling, which are faster than fixed plot sampling.
Hormoz SOHRABI
doaj   +1 more source

Line transect estimates of Irrawaddy dolphin abundance along the eastern Gulf Coast of Thailand.

open access: yesFrontiers in Marine Science, 2015
Effective conservation of coastal marine mammals is largely dependent on reliable knowledge of their abundance, as well as the ecological and human factors driving their distribution.
Ellen eHines   +6 more
doaj   +1 more source

Stakeholders engagement as an important step for the long‐term monitoring of wild ungulate populations

open access: yesEcological Solutions and Evidence, 2021
Monitoring trends in animal populations is essential for the development of appropriate wildlife management strategies. However, long‐term studies are difficult to maintain mainly due to the lack of continuous funding. In this scenario, the collaboration
João Carvalho   +4 more
doaj   +1 more source

A comparison of four different methods to estimate population size of Alpine marmot (Marmota marmota) [PDF]

open access: yes, 2017
Obtaining reliable information on animal abundance in mountainous landscapes is challenging. Highly heterogeneous habitats tend to reduce detection probabilities, and the three-dimensional, rugged nature of the terrain poses severe limits to the ...
Bertolini, Matteo   +4 more
core   +1 more source

Importance Sampling: Intrinsic Dimension and Computational Cost [PDF]

open access: yes, 2017
The basic idea of importance sampling is to use independent samples from a proposal measure in order to approximate expectations with respect to a target measure.
Agapiou, S.   +3 more
core   +3 more sources

Home - About - Disclaimer - Privacy