Level Set Methods for Stochastic Discontinuity Detection in Nonlinear Problems

Stochastic physical problems governed by nonlinear conservation laws are challenging due to solution discontinuities in stochastic and physical space. In this paper, we present a level set method to track discontinuities in stochastic space by solving a Hamilton-Jacobi equation. By introducing a speed function that vanishes at discontinuities, the iso-zero of the level set problem coincide with the discontinuities of the conservation law. The level set problem is solved on a sequence of successively finer grids in stochastic space. The method is adaptive in the sense that costly evaluations of the conservation law of interest are only performed in the vicinity of the discontinuities during the refinement stage. In regions of stochastic space where the solution is smooth, a surrogate method replaces expensive evaluations of the conservation law. The proposed method is tested in conjunction with different sets of localized orthogonal basis functions on simplex elements, as well as frames based on piecewise polynomials conforming to the level set function. The performance of the proposed method is compared to existing adaptive multi-element generalized polynomial chaos methods

Resource curse or not: A question of appropriability

This paper shows that whether natural resources are good or bad for a country's development depends crucially on the interaction between institutional setting and the type of resources that the country possesses. Some natural resources are for economical and technical reasons more likely to cause problems such as rent-seeking and conflicts than others (termed technically appropriable resources). This potential problem can, however, be countered by good institutional quality (rendering these resources less institutionally appropriable). In contrast to the traditional resource curse hypothesis we show that the impact of natural resources on economic growth is non-monotonic in institutional quality. Mineral rich countries are cursed only if they have low quality institutions, while the curse is reversed if institutions are good enough. Using new data we find that this is even more stark for countries rich in diamonds and precious metals.natural resources; appropriability; property rights; institutions; economic growth; development

Printmaking in the Expanded Field

"Printmaking in the Expanded Field" took place at Oslo National Academy of Arts september 15-18th, 2015. The seminar took 5 years to develop and was initiated by professor Jan Pettersson, head of the Printmaking Department, at the Department for Art and Craft at The Oslo National Academy of the Arts and in collaboration with Trykkeriet in Bergen and Päivikki Kallio, Professor of Printmaking at the Finnish Academy of Fine Arts, Helsinki Finland. The aim with this 4 day seminar was through invitation of a number of prominent artists, theorists, curators and museum representatives on a global basis to discuss the situation of printmaking today out from the tradition, the theoretical aspect, the historical and what is happening and can happen on the global arena in the future. With “Printmaking in the Expanded Field“ we want to create a focused seminar with the Nordic field as the primary impact. Our Nordic Institutions of education has a common cultural platform which creates an excellent base for the further development of the media also in an international context

Resource curse or not: A question of appropriability

This paper shows that whether natural resources are good or bad for a country’s development crucially depends on the interaction between institutional setting and the type of resources possessed by the country. Some natural resources are, for economical and technical reasons, more likely to cause problems such as rent-seeking and conflicts than others. This potential problem can, however, be countered by good institutional quality. In contrast to the traditional resource curse hypothesis, we show the impact of natural resources on economic growth to be non-monotonic in institutional quality. Countries rich in minerals are cursed only if they have low quality institutions, while the curse is reversed if institutions are sufficiently good.Natural Resources, Appropriability, Property Rights, Institutions, Economic Growth, Development

Researching historical print archives to integrate 'found' knowledge into post-digital printmaking workshops

Researching historical print archives to integrate 'found' knowledge into post-digital printmaking workshopspublishedVersio

Researching historical print archives to integrate 'found' knowledge into post-digital printmaking workshops

This lecture concerns research into historical print archives/institutions as well as other relevant archives

Researching historical print archives to integrate 'found' knowledge into post-digital printmaking workshops

Researching historical print archives to integrate 'found' knowledge into post-digital printmaking workshop

Printmaking in the Expanded Field

"Printmaking in the Expanded Field" took place at Oslo National Academy of Arts september 15-18th, 2015. The seminar took 5 years to develop and was initiated by professor Jan Pettersson, head of the Printmaking Department, at the Department for Art and Craft at The Oslo National Academy of the Arts and in collaboration with Trykkeriet in Bergen and Päivikki Kallio, Professor of Printmaking at the Finnish Academy of Fine Arts, Helsinki Finland. The aim with this 4 day seminar was through invitation of a number of prominent artists, theorists, curators and museum representatives on a global basis to discuss the situation of printmaking today out from the tradition, the theoretical aspect, the historical and what is happening and can happen on the global arena in the future. With “Printmaking in the Expanded Field“ we want to create a focused seminar with the Nordic field as the primary impact. Our Nordic Institutions of education has a common cultural platform which creates an excellent base for the further development of the media also in an international context

Sustainable plant protection for increased food security in a changing climate

The global climate is changing. Rising temperatures in temperate regions are making headlines, but there are a host of changes that may have even greater impact on a global scale, particularly in regions where food security is already delicately balanced. Rising sea levels, changing patterns of rainfall, availability of water and increasing concentration of carbon dioxide in the atmosphere are all likely to affect the biotic environment upon which we depend