Journal of
Systemics, Cybernetics and Informatics
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ISSN: 1690-4524 (Online)


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Editorial Advisory Board's Chair
William Lesso

Editor-in-Chief
Nagib C. Callaos


Sponsored by
The International Institute of
Informatics and Systemics

www.iiis.org
 

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Web X-Ray: Developing and Adopting Web Best Practices in Enterprises
Reinaldo Ferreira
(pages: 1-6)

The Use of MARIE CPU Simulator in Computer Architecture Course: A Case Study of Student's Perception of Learning and Performance
Jorge Fernando Maxnuck Soares, Luís Tadeu M. Raunheitte, Takato Kurihara
(pages: 7-13)

A Paradigm for Systems Thinking as a Real-Time Approach for Human Adaptation in the 21st Century
Melissa J. Mills
(pages: 14-21)

Exploring the Synergies between Teaching and Consulting: The Baldrige National Quality Award Experience
Ramachandran Natarajan
(pages: 22-25)

Now What? Think Fast: Using Healthcare Clinics as Universal Language to Maximize Learning for International Students in a Graduate Classroom
Sanda Katila
(pages: 26-37)

Quality Management in Education: A Comparative Case Study in Swedish Municipalities
Per-Olof Hansson, Elin Wihlborg
(pages: 38-42)

Introducing Problem-Solving Method in the Business School of a Brazilian University
Lilian A. P. Miguel, Adilson Caldeira
(pages: 43-48)

Academic Formation and Formative Research Integration Management for the Culmination of Studies Process in Higher Education
Lorna Cruz Rizo, Eneida Catalina Matos Hernández
(pages: 49-55)

Understanding the Process and Success Factors to Increase Synergies between Research and Teaching
Deborah Ballou, Brian Huguenard, Brian Nagy, Curtis Armstrong, Tor Guimaraes
(pages: 56-59)

Getting Smart: Need to Focus on Creating an Enabling Environment Structured Around the Objective of Realizing the True Potential of Our Next Generations
Hassan Sattar, Sadaf Nazir
(pages: 60-65)

How to Efficiently Conduct an IT Audit – In the Perspective of Research, Consulting and Teaching
Gabriel Felley, Rolf Dornberger
(pages: 66-70)

Breaking the Boundaries: Academic Applications of Multidisciplinary Research in Computer Science and Dentistry
Patricia Witt, José Ignacio Peláez, Gustavo Vaccaro
(pages: 71-75)


 

Abstracts

 


ABSTRACT


Implementation of Hierarchical Authorization For A Web-Based Digital Library

Andreas Geyer-Schulz, Anke Thede


Access control mechanisms are needed in almost every system nowadays to control what kind of access each user has to which resources and when. On the one hand access control systems need to be flexible to allow the definition of the access rules that are actually needed. But they must also be easy to administrate to prevent rules from being in place without the administrator realizing it. This is particularly difficult for systems such as a digital library that requires fine-grained access rules specifying access control at a document level. We present the implementation and architecture of a system that allows definition of access rights down to the single document and user level. We use hierarchies on users and roles, hierachies on access rights and hierarchies on documents and document groups. These hierarchies allow a maximum of flexibility and still keep the system easy enough to administrate. Our access control system supports positive as well as negative permissions.

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