In this paper, we provide another reason that may explain the adoption of the hub-and-spoke network structure in the airline industry. We show that when an airline has to decide on its capacity before the demand conditions are perfectly known, a hub-and-spoke network structure by pooling...

In this paper, we examine how strategic interactions affect airline network. We develop a three stage duopoly game: at stage 1 airlines determines their network structure (linear versus hub-and-spoke). At stage 2 they decide on their capacities, and at stage 3 firms compete in quantities. The...

The Porter hypothesis asserts polluting firms can benefit from environmental policies, arguing that well-designed environmental regulations stimulate innovation, which by increasing either productivity or product value, leads to private benefits. As a consequence, environmental regulations would...

The preservation of biodiversity requires the protection of endangered species' habitats. In Canada, approximately 60% of these habitats are located on private lands. We start by analysing the obstacles to the protection of endangered species' habitats, with special attention to the compensation...

In this paper, we reexamine the relationship between performance and concentration in the light of modern oligopoly theory. More specifically, we examine the link that exists between firm size inequality (FSI) and market power. Traditional theory predicts that market power should be higher in...

Selon l'hypothèse de Porter, des réglementations environnementales (RE) strictes doivent avoir un impact positif sur la productivité des firmes touchées. Dans ce papier, nous revoyons les arguments théoriques et empiriques entourant cette hypothèse. Nous montrons qu'il existe peu de...

Cet article présente de manière non technique certains des fondements théoriques possibles de l'hypothèse de Porter selon laquelle, des réglementations environmentales strictes peuvent améliorer le profit des industries qui y sont soumises. Après une brève présentation de l'hypothèse,...

We consider a market with three competitors, two of which decide to cooperate. Firms first choose capacity under demand uncertainty then compete in quantities after the uncertainty has been resolved. We specify strategic alliance (SA) as an agreement where two airlines jointly choose capacity...

In this paper, we use Market Share Instability (MSI) as a measure of the intensity of competition among airlines on a specific route. This measure is used to capture not only price competition but also non-price competition notably capacity competition. We test the effect of different variables...

This paper tests whether adopting the international norm ISO 14001 significantly impacts environmental performance in Quebec's pulp and paper industry. Using monthly data collected from 37 plants between 1997 and 2003, we show that: i) ISO certification does not lead to a reduction in total...