Gunnar Stefansson

Research interests

1 Web-assisted education

Status

This is a combination of research and development. The research part is on how students respond to on-line quiz questions and how grading schemes should be designed to enhance learning. The development is within the "tutor-web", with the goal of providing an open on-line university.

Some links and references

Publication: The tutor-web (Stefansson, 2004) The current (pilot) tutor-web entry point
Manuscript: Learning with the tutor-web The tutor-web: Notes and comparisons with other systems
A proposal: Future research and development with the tutor-web

2 Statistical models of marine ecosystems

Status

This consists of several sub-projects which have been under development for many years. The largest single subproject was the development of Gadget, a framework for statistical multispecies modelling.

Some links and references

Publication: Requirements for a multispecies model (Stefansson and Palsson, 1998) Publication: Combining controls, MPAs, quota and effort (Stefansson and Rosenberg, 2005) Publication: A simple example of a Gadget model implementation (Taylor et al, 2007)
Publication: Length distributions in surveys. (Hrafnkelsson and Stefansson, 2004) Publication: Designing marine protected ares (Stefansson and Rosenberg, 2006) Publication: Risk analysis of a harvest control rule (Baldursson et al, 1996)
Publication: On species interactions (Stefansson et al, 1998) Manuscript: A bootstrap method for ... statistical multispecies models Publication: Multispecies risk analysis (Danielsson et al, 1999)
The Gadget home page Gadget User Guide Manuscript: Gadget overview paper

3 Multiple comparisons and molecular biology

Status

This has recently started as a joint project with deCode Genetics. The interest is in designing a tiling microarray for investigating a large segment of the genome.

Some links and references

Publication: Basis for partitioning principle Paper: The partitioning principle

4 Marine surveys

Status

This has been an on-going topic of interest for many years and is a combination of research and development. Recently the focus has been on completely changing marine research using autonomous underwater vehicles.

Some links and references

Publication: The delta-gamma method (Stefansson 1996) Publication: Icelandic groundfish survey (Palsson et al 1989)
Publication: Distribution of cod-survey data (Brynjarsdottir and Stefansson, 2004) Publication: On survey designs (Cooper et al, 2004) Publication: Analysis of stomach content data (Stefansson and Palsson, 1997)
Manuscript: Planned AUV research in Iceland Manuscript: Reliability of a modular AUV Hafmynd, developer of the Gavia AUV