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MCRN

An Introduction to Variational Data Assimilation

Naratip Santitissadeekorn gives an introductory survey of variational techniques in data assimilation including 3D-VAR and 4D-VAR. This talk was given on 10-2-14. Naratip Santitissadeekorn gives an introductory survey of variational techniques in data assimilation including 3D-VAR and 4D-VAR. This t…
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MCRN

Complex Energy Systems

This is the opening guest lecture for the Electric Grid Focus Group. Dr. Michael Chertkov of Los Alamos National Lab describes the statistical and mathematical problems arising in complex energy systems, including the electric grid and gas networks. Systems with high penetration of renewable energy …
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MCRN

Video Tutorials on the MCRN Hub

These video tutorials will get you and your collaborators started using the MCRN Hub! See the episode list below to see what topics are covered. These video tutorials will get you and your collaborators started using the MCRN Hub! See the episode list below to see what topics are covered. …
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HABRI Central

The effects of intrusion on the behaviour of caged laboratory rats ( Rattus norvegicus ): consequences for welfare

This experiment examines the consequences and welfare implications of the introduction of new rats to established (resident) caged laboratory rat groups. The effects on investigatory and aggressive behaviours of the established and the newly introduced rats were measured. The aggressive status withi…
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HABRI Central

Introduction of foreign female Asian elephants ( Elephas maximus ) into an existing group: behavioural reactions and changes in cortisol levels

The present study examined the extent to which the introduction of three female Asian elephants (aged 3, 11 and 27 years) into a group of 5 (1 male, 4 female) elephants at Munster zoo, Germany, affects the behaviour and urinary cortisol levels of the animals involved. At Munster, only the females we…
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MCRN

Extending the square root method to account for model noise in the ensemble Kalman filter

Presented by Patrick Raanes on 2-18-2015 Abstract:A novel approach to account for model noise in the forecast step of the Ensemble Kalman filter (EnKF) is proposed. The core method is based on the approach of the analysis step of ensemble square root filters (ETKF), and consists in right-multiplying…
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MCRN

Where's the Math in Climate Science?

Climate science is dominated by the use of large-scale models, of which there are only 30 or so around the world. It might then seem that the need for mathematics is limited to areas that directly support the operation of such models. I will explain, by digging into the way the models work, this is …
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MCRN

A Tutorial on Kalman Filters

This is an introduction to the Kalman filter, explaining some underlying assumptions, use and extensions of the method.This talk was given on 10-7-2015. This is an introduction to the Kalman filter, explaining some underlying assumptions, use and extensions of the method.This talk was given on 10-7-…
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MCRN

Introduction to Groups on the MCRN Hub Part I

This is the first of two video tutorials on using groups in the MCRN Hub. This video will give a tour of the basic functionality of groups while the following video will demonstrate how to create a group and manage group settings. This is the first of two video tutorials on using groups in the MCRN …
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MCRN

Introduction to Groups on the MCRN Hub Part II

This is the second of two video tutorials on using groups in the MCRN Hub. This video will demonstrate how to create a group and manage group settings. This is the second of two video tutorials on using groups in the MCRN Hub. This video will demonstrate how to create a group and manage group settin…
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MyGeohub

First Lecture

This is the first lecture of the test course. …
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HABRI Central

Morbidity and mortality of invertebrates, amphibians, reptiles, and mammals at a major exotic companion animal wholesaler

The authors formally investigated a major international wildlife wholesaler and subsequently confiscated more than 26,400 nonhuman animals of 171 species and types. Approximately 80% of the nonhuman animals were identified as grossly sick, injured, or dead, with the remaining in suspected suboptimal…
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HABRI Central

Human-cat relationship in an oceanic biosphere reserve: the case of La Palma Island, Canary archipelago

Removal of feral cats from island environments is a useful mechanism by which their ecological impact on endangered species can be reduced or ended. Nevertheless, because cats are anthropogenic in their origins, social perceptions of management practices play a large role in their implementation. Fo…
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MCRN

An Introduction to Lagrangian Data Assimilation - Part I

Laura Slivinski at Woods Hole Oceanographic Institute gives an introduction to Lagrangian Data Assimlation on 10-30-2014. Laura Slivinski at Woods Hole Oceanographic Institute gives an introduction to Lagrangian Data Assimlation on 10-30-2014. …
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MCRN

An Introduction to Lagrangian Data Assimilation - Part II

Lauara Slivinski at Woods Hole Oceanographic Institution gives an introduction to Lagrangian Data Assimilation on 11-13-2014. Lauara Slivinski at Woods Hole Oceanographic Institution gives an introduction to Lagrangian Data Assimilation on 11-13-2014. …
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MCRN

A Survey of Grid Control and Optimization

This is an introductory survey of how control problems arise on different time scales in electric grid transmission problems. The set up and general form of such problems are considered, along with operational considerations. This talk is drawn from the worksBienstock, Daniel, Michael Chertkov, and …
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MCRN

Synchronization in power grid networks

This survey discusses Master Stability Function (MSF) analysis for determining stability of synchronization of coupled oscillators on network. In addition, we briefly discuss the derivation of the Swing equation that determine the dynamics of a node in power grid network, and different models of the…
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MCRN

Introduction to Projects on the MCRN Hub

This is a tutorial video demonstrating the main features of projects, including the newsfeed, task assignment and file sharing. This is a tutorial video demonstrating the main features of projects, including the newsfeed, task assignment and file sharing. …
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HABRI Central

Responses by wild house mice ( Mus musculus) to various stimuli in a novel environment

House mice ( Mus musculus) pose a threat to the native flora and fauna on islands, and can cause significant damage wherever they have been introduced. Methods used to eradicate invasive rodents, like house mice, at high population densities may not be appropriate for intercepting them at lower dens…
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