The bulk of acid depositions, which have harmful effects on the environment, are caused by foreign emissions in many European countries. Therefore, if some countries emit more acids, one cannot be sure that countries that emit less will benefit from reduced acid depositions. However, numerical...

Sub-standard quality is a recurrent problem within parts of the human services - in the care for frail elderly, mentally ill, the intellectually disabled, and children in need - and within law enforcement. Service quality is of great concern to the individual, and the larger society. If so...

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...

Social democracy, it is often said, is nice but pricey. Whatever its merits in the rich countries of Western Europe, social democracy is frequently dismissed as an infeasible model for developing countries. Based on generosity towards the poor and protection against market competition, the...

Structural forward-looking quasi-dynamic behavioural model is estimated for the Norwegian households where husband is eligible for early retirement between 1993 and 1996. Random utility approach is applied to rationalize the observed shifts between four main stages on the labour market. Specific...

Unproductive enterprises that feed on productive businesses, are rampant in developing countries. These parasitic enterprises take divergent forms, some headed by violent bandits and brutal mafia bosses, others by organized middlemen or smart political insiders. All of them seem to have the...

The RAINS model is used to calculate cost minimising abatement policies subject to European-wide spatial restrictions on pollution. The principle for choosing environmental targets for the 1994 Oslo Protocol was closing a gap between benchmark- and critical loads for each grid with a uniform...

In 1989, an early retirement program (AFP) was introduced in Norway, with an eligibility age gradually decreasing from 66 to 62, and now covering about two thirds of the labour force. To assess the impact on the labour force we estimate a multinomial logit model for transitions between labour...

Informal groups cannot rely on external enforcement to insure that members abide by their obligations. It is generally assumed that these problems are solved by "social sanctions" and reputational effects. The present paper focuses on roscas, one of the most commonly found informal financial...

Benchmarking by means of applying the DEA model is appearing as an interesting alternative for regulators under the new regimes for electricity distributors. A sample of large electricity distribution utilities from Denmark, Finland, Norway, Sweden and the Netherlands for the year 1997 is...