Operational mapping of atmospheric nitrogen deposition to the Baltic Sea O. Hertel, C. Ambelas Skjøth, J. Brandt, J. H. Christensen, L. M. Frohn, and J. Frydendall National Environmental Research Institute, Department of Atmospheric Environment, P.O. Box 358, Frederiksborgvej 399, 4000 Roskilde, Denmark Received: 17 October 2002 – Accepted: 27 June 2003 – Published: 8 July 2003 Correspondence t...

Merger and acquisition activity has increased sharply in the last decade. While the shareholders of the target firms appear to reap economic benefits from mergers, those of the bidder firms often do not fare well. In such an environment, it seems useful to have models that can help senior managers of bidder firms make informed decisions about the amount of premium, over target’s share prices pr...

Basel III introduces the first global framework for bank liquidity regulation. As monetary policy typically involves targeting the interest rate on interbank loans of the most liquid asset – central bank reserves – it is important to understand how this new requirement will impact the efficacy of current operational frameworks. We extend a standard model of monetary policy implementation in a c...

Healthcare Operational Research (OR) has had limited success in achieving sufficient level stakeholder acceptance to lead to implementation of results. This research study aimed at combining OR methodologies to achieve greater acceptance of results for organizational change. Patient flow delays in the Pediatric Intensive Care Unit (PICU) at Children's Hospital of Wisconsin were identified using...

The United States Marine Corps Combat Development Command and the New Zealand Defence Operational Support Establishment have begun collaborative work in the area of Operational Synthesis. In this paper we describe the research program initiated in the US called Project Albert which uses the process of Operational Synthesis. We then provide details on some specific research in this area initiate...

Operational Semantics of Hybrid Systems

Soft interactions are not easily disentangled from hard ones. In an operational definition of soft and hard processes one finds that at presently analyzed scales there is an interplay of soft and hard processes. As the scale increases, so does the amount of hard processes. So far, nothing is as soft nor as hard as we would like.

This paper is focusing on the following question: What is Operational Research (OR)? We will show that there is not a single and simple answer. Epistemological assumptions and practical traditions define different types of OR. We have identified three: The technical or hard OR, the practical or soft OR, and the critical OR. Following a historical perspective we will present these three schools....