We present a new conceptual model of disruptive innovation and apply it to distributed ledger technology. Our analysis illustrates the new features of this technology and why there is an argument that, in several respects, the combination of distributed ledger technology and cryptographically...

Determining the transition matrix of a discrete Markov process from sequential forecasts of smoothed density functions is an important element of many problems in decision theory and economics. Recent theoretical results have demonstrated that the Perron-Frobenius eigenfunction of a Markov risk...

Blockchains and Byzantine Fault Tolerance form the basis of decentralized currencies and ledgers such as Bitcoin, Ripple, ZeroCash, and Ethereum. A large slate of literature has focused on the currency aspects (e.g. anonymity, independence from central banks, etc.). We argue that, as-far-as...

We discuss different techniques for representing infinite temporal data. There aretwo basic approaches: A procedural description, as used in production systems, andrepresented, in this paper, by a version of Datalog. The second approach is a moredeclarative method, using some form of temporal...

This article develops an economic model that shows the optimal level of information security investment in the context of interdependent security risks. Using particular functional forms, the analysis shows that the relationship between the security vulnerability level and the level of optimal...

Information and communication technologies (ICTs) are an important determinant of productivity growth and innovation. This study examines the effects of sector regulation on innovation in telecommunications and related information industries. A typology of innovation processes in ICT industries...

Various forms of regulation affecting investment in the telecommunications industry have been investigated thoroughly. However, previous literature has largely overlooked the issue of regulatory constellation. Using data for 28 European countries for the period between 1997 and 2010, this study...

Tabular and graphical representations are used to communicate security risk assessments for IT systems. However, there is no consensus on which type of representation better supports the comprehension of risks (such as the relationships between threats, vulnerabilities and security controls)....

[Background] Security risk assessment methods in industry mostly use a tabular notation to represent the assessment results whilst academic works advocate graphical methods. Experiments with MSc students showed that the tabular notation is better than an iconic graphical notation for the...