The aim of the paper is to bring to the realm of game theory the well-known deontic notion of contrary-to-duty (CTD) obligation, so far not investigated in relation to optimality of strategic decisions. We maintain that, under a game-theoretical semantics, CTDs are well-suited to treat sub-ideal decisions. We also argue that, in a wide class of interactions, CTDs can used as a compact represent...

After 9/11, new security duties were instituted at many U.S. air carriers and existing safety and security duties received increased emphasis. Concurrently, in-flight services were changed and in many cases, cabin crews were reduced. This article examines the post-9/11 conflict between passenger service and the timely performance of safety and security duties at 1 major U.S. air carrier. In-fli...

Article history: Received 3 March 2009 Received in revised form 14 July 2009 Accepted 3 September 2009 Available online 14 October 2009 Tariffs and anti-dumping duties are two important tools used to protect industries from foreign competition and to generate revenue. While the two tools have been studied extensively in separate contexts, little is known about their comparative effects. This pa...

We describe a novel general-purpose mechanism for enforcing separation of duties in computerized information systems. This mechanism of transaction control expressions has close similarities to traditional controls in manual paper-based systems. It has the great bene t of intuitive simplicity, in both concept and implementation.

Certain relationships generate associative duties that exhibit robustness across change. It seems insufficient for friendship, for example, if I am only disposed to fulfil duties of friendship towards you as things stand here and now. However, robustness is not required across all variations. Were you to become monstrously cruel towards me, we might expect that my duties of friendship towards y...