Information systems (IS) departments face many challenges in today’s rapidly changing environment. One approach to understanding the challenges faced by IS departments is to survey IS managers to elicit what they consider key issues. Key issues in IS management surveys have been conducted for many years in many nations and regions. However, most key issues surveys seem to lack a theoretical bas...

The importance of strategic and dynamic behaviour in real-world systems is paramount, especially when we consider the large technical infrastructures that make society work. Modelling social aspects are complicated because they are usually not well defined and can highly depend on individuals. This paper proposes and describes a framework on how to combine system dynamics and Q methodology to b...

The moral acts of 19 dyads of 4-year-olds in a cognitively simplified version of Prisoner's Dilemma were analyzed in relationship to their friendship, emotions, and processes of conflict resolution. Degree of friendship was rated by teachers; two sociologists used a Q-sort of Group Processes to describe the dyads' interactions; the emotions of each child were coded from videotape--independently...

The interconnected nature of the different components of smart grids is a prime example of complexity in technological systems. Developing such systems is highly dependent on the wishes and needs of end-users and other stakeholders. We argue that stakeholder values should be taken into consideration during the design and standardisation of complex infrastructures, and illustrate this with a cas...

Article history: Received 14 December 2007 Revised 9 September 2008 Accepted 11 September 2008 Available online 25 September 2008 Communicated by Naoki Saito We present a condition on the matrix of an underdetermined linear system which guarantees that the solution of the system with minimal q-quasinorm is also the sparsest one. This generalizes, and slightly improves, a similar result for the ...

Recently Perlmutter et al. (1999) suggested a positive value of Einstein’s cosmological constant Λ on the basis of luminosity distances from type-Ia supernovae (the “SN-method”). However, Λ world models had earlier been proposed by Hoell & Priester (1991) and Liebscher et al. (1992a,b) on the basis of quasar absorption-line data (the “Q-method”). Employing more general repulsive fluids (“dark e...

In this paper we investigate total correctness (termination and correctness simultaneously) in Nonstandard Dynamic Logic (NDL). Here we show that despite of the celebrated Kfoury-Park [5] result, termination is a first order notion if approached properly (e.g. via NDL). In Definition 1 below we recall the famous Manna-Cooper Q-method for proving total correctness. Then we do the same things to ...

From the perspectives of regulation and convergence, several debates on the industrial definition of smart TV service in Korean broadcasting and communications market have been in progress. The most heated controversy mainly depends on whether smart TV is controlled under the broadcasting regulations or under the communications regulations. This Korean specific problem is summarized in regulati...

Article history: Received 14 December 2007 Revised 9 September 2008 Accepted 11 September 2008 Available online 25 September 2008 Communicated by Naoki Saito We present a condition on the matrix of an underdetermined linear system which guarantees that the solution of the system with minimal q-quasinorm is also the sparsest one. This generalizes, and slightly improves, a similar result for the ...