The New Economic Geography literature allows detailed analysis of the factors that determine the location decisions of firms in integrated markets. However, the competitive process is modelled in a rather rudimentary way, and the empirical evidence has usually been obtained from reduced-form...

We set up a three-firm model of spatial competition to analyse how a merger affects the incentives for relocation, and conversely, how the possibility of relocation affects the profitability of the merger, particularly for the non-participating firm. The analysis is carried out for the...

I ringa utsträckning diskuteras graden av konkurrens. En förklaring kan vara, att konkurrensuppfattningen härrör från neoklassisk teori. En mera realistisk konkurrensuppfattning vinns genom att utgå från SCP-paradigmet. Med hjälp av detta paradigm kan urskiljas tre grupper av begrepp,...

Many countries that produce rough diamond have experienced a highly adverse pattern of economic development. In this article, we propose that the primary reason for the negative impact is that diamonds easily become the prize in predatory struggles between loot-seeking rebels and more or less...

System reliability is a key aspect of electricity supply, and the ability to maintain system reliability thus is an important aspect of a liberalised electricity market. But system reliability can be ensured only if there is sufficient reserve capacity at all times. In a liberalised electricity...

In a non-cooperative oligopoly model where firms use simple linear prices, Klemperer (1987) has shown that the existence of consumers’ switching costs may generate monopoly like prices, and thereby create substantial loss in welfare. We show that when allowing firms to use two-part tariffs,...

The general opinion among power industry representatives and electricity market analysts is that the Nordic electricity market has worked well. The purpose of this paper is to explore why the Nordic electricity market has performed well and to consider to what extent the Nordic experiences are...

We analyze the success of filtering as a solution to the spam problem when used alone or concurrently with sender and/or receiver pricing. We find that filters alone may exacerbate the spam problem if the spammer attempts to evade them by sending multiple variants of the message to each...