The research papers below were written at the Distributed and Embedded Systems group of the University of Twente – which is now merged in a new group called Services, Cyber security and Safety, supervised by Sandro Etalle (UT) and Prof. Pieter Hartel (UT), in collaboration with Ricardo Corin, Gabriele Lenzini, and Jerry den Hartog.
My PhD research was funded through the IOP GenCom project called “Privacy in an Ambient World”. To explain our research question, our mission: We were working on the problem of protecting the privacy of data, in the new networked world, and in particular, on the design of flexible access control mechanisms for distributed heterogeneous systems. It is hard to reconcile confidentiality and availability using conventional protection mechanisms. In settings where confidentiality is a prerequisite, a burden is placed on the users, who struggle to use the protected systems. In other settings, where availability is more important, users are inclined to bypass protection mechanisms, in order to get the work done. We propose more flexible protection mechanisms to address settings where both confidentiality and availability are important (e.g. medical environments, collaborative work environments). For more details, see for instance our article about protecting health records.
Below a list of my academic publications – most of these papers have appeared as book chapters in academic publications or as articles in journals or conference proceedings.
Please note: Papers are provided here for fast dissemination of technical work on a noncommercial basis. Copyrights are maintained by the publishers (ACM, Elsevier, Springer, IEEE, etc.). It is understood that persons making copies of the papers adhere to these copyrights.
- Flexible Access Control for Dynamic Collaborative Environments, 2009, CTIT PhD.-thesis series ISSN 1381-3617, Number 09-159, IPA Dissertation series, Number 2009-26, http://dx.doi.org/10.3990/1.9789036529501, University of Twente.
- RBAC Administration in Distributed Systems, 2008, in, eds. N. Li, Proc. of the ACM Symposium on Access Control Models and Technologies, ACM press.
- Ubiquitous Privacy Protection, 2007, in, eds. J. Canny, M. Langheinrich, S. Spiekermannn, Proc. of the 4th Workshop on UBICOMP Privacy, Springer, Berlin.
- Refinement for Administrative Policies, 2007, in, eds. W. Jonker, M. Petkovic, Proc. of the 4th Secure Data Management workshop, Springer, Berlin [pdf].
- Audit-based Compliance Control (AC2) for EHR systems, 2007, bookchapter in, eds. T. Grandison, Assimilating Privacy Technologies and Health Care Compliance, IDEA group inc., Hershey
- Extended Privilege Inheritance in RBAC, 2007, in, eds. R. H. Deng and P. Samarati, Proc. of the Symp. on Information, Computer and Communications Security (ASIACCS), ACM Press.
- Audit-based Compliance Control, 2007, in, eds. T. Dimitrakos,F. Martinelli,P. Ryan,S. Schneider, the International Journal of Information Security, Springer, Berlin [pdf].
- Audit-based Access Control voor de zorg, 2006, in, eds. R. Kuiper, het vakblad Informatiebeveiliging, GvIB, Roosendaal – Note: The next issue of this journal contains an article by R. Koot suggesting to use Audit-based Access Control also in Service Oriented Architectures.
- Audit-based Access Control for Electronic Health Records, 2006, in, eds. F. Gaducci, Views on Designing Complex Architectures, Electronic Notes in Theoretical Computer Science, Elsevier, Amsterdam
- Privacy Policies, 2006, in, eds. W. Jonker and M. Petkovic, Security Privacy and Trust in Modern Data Management, Springer, Berlin
- Audit Logic for Accountability, 2005, in, eds. W. Winsborough and A. Sahai, Proc. of IEEE POLICY 2005, IEEE Computing Society Press.
In 2002 I graduated in Theoretical Physics at the University of Utrecht, by defending a research thesis in Quantum Mechanics. The thesis actually goes into the details of mesoscopic quantum mechanics, why and how quantum mechanical particles lose their quantum behavior when they come into contact with many particles. The thesis focusses on spin particles moving thru a bath of other particles (also known as brownian motion). Decoherence is the main problem when building quantum computers.
- Decoherence in Brownian Motion, 2002, Master thesis, Department of Physics and Astronomy, University of Utrecht