Piecewise deterministic control problems are problems involving stochastic disturbance of a special type. In certain situations, in an otherwise deterministic control system, it may happen that the state jumps at certain stochastic points of time. Examples are sudden oil finds, or sudden...

We present some theoretical results which simplifies the estimation of linear models with multiple high-dimensional fixed effects. In particular, we show how to sweep out multiple fixed effects from the normal equations, in analogy with the common within-groups estimator

Most nations spend a considerable part of their gross domestic product (GDP) on defense. However, no previous study has addressed the productivity and efficiency of the core area of the armed forces, operational units, using Data Envelopment Analysis (DEA). Introducing a model for the production...

The performance of local tax offices of Norway is studied over a three-year period using Data Envelopment Efficiency analysis and calculating Malmquist productivity indices. One input, labour, is used, and six output categories of the main service activities carried out by tax offices are...

In recent years, the OECD has measured the structural rate of unemployment by an indicator called the Non-Accelerating Wage Rate of Unemployment. The NAWRU-indicator is an important element in the policy analysis of the OECD. The rise in the estimated NAWRUs is also taken as evidence that Nordic...

The performance of local tax offices of Norway is studied over a three year period applying Data Envelopment Efficiency analysis and a Malmquist productivity index. The estimates are biascorrected using a bootstrap approach recently developed for DEA models. The results show that bias correction...

Without an international climate agreement, extraction of more natural gas could reduce emissions of CO2 as more “clean” natural gas may drive out “dirty” coal and oil. Using a computable equilibrium model for the Western European electricity and natural gas markets, we examine whether...

This paper analyses whether recycling revenues from carbon emission permit auctions can reduce unemployment in the Spanish economy. Spain's deviation from EU's intermediate emission goals is more serious than for most other EU countries, and the unemployment is also well above the EU average. We...

We study the role of technology subsidies in climate policies, using a simple dynamic equilibrium model with learning-by-doing. The optimal subsidy rate of a carbon-free technology is high when the technology is first adopted, but falls significantly over the next decades. However, the...