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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Engaging Digital Natives through Social Learning
Nina Sarkar, Wendy Ford, Christina Manzo
(pages: 1-4)

ASIE Model: An Innovative Instructional Design Model for Teachers in Enhancing and Sustaining the Quality of the 21st Century Learning
Ismail Md Zain
(pages: 5-10)

Infusing 21st Century Competencies into the Curriculum: A School-Level, Multi-Disciplinary Perspective
Tze Yong Tan, Siew Yee Lim, Chin Pang Tham, Deepa Patel, Linda Shear
(pages: 11-13)

Education for Managing Digital Transformation: A Feedback Systems Approach
Michael Von Kutzschenbach, Carl Brønn
(pages: 14-19)

ICT Infrastructure in the Metal Mechanical SMEs of Quito and its Relationship with Business Management
Juan Ibujés Villacís
(pages: 20-24)

Discovering and Analyzing Important Real-Time Trends in Noisy Twitter Streams
Khalid N. Alhayyan, Imran Ahmad
(pages: 25-31)

Analyzing Motives, Preferences, and Experiences in Video Game Play
Donald Loffredo, Alireza Tavakkoli
(pages: 32-37)

Efficient Beacon Collision Resolution Procedure for IEEE 802.15.4 /Zigbee Wireless Personal Area Networks
Bassam A. Zafar, Sofiane Ouni
(pages: 38-44)

Automatic Identification of Travel Locations in Rare Books - Object Oriented Information Management
Detlev Doherr, Andreas Jankowski
(pages: 45-48)

Multidisciplinary Approach for Investigation of Injury Formation in Sensitive Tissue Structures
Gabriela Spanikova, Pavol Spanik, Michal Frivaldsky, Miroslav Pavelek, Zuzana Loncova, Franco Bassetto, Vincenzo Vindigni
(pages: 49-54)

Rethinking Public Transportation and Logistics as Collaborative Scenarios
Gunter Teichmann, Frank-Michael Dittes, Uwe Arnold
(pages: 55-60)

Managing IT Complexity in the Manufacturing Industry – An Agenda for Action
Günther Schuh, Jörg Hoffmann, Marie Gruber, Violett Zeller
(pages: 61-65)

Hacking Experiment Using USB Rubber Ducky Scripting
Benjamin Cannoles, Ahmad Ghafarian
(pages: 66-71)

Heterogeneous Networking in C-ITS
Martin Srotyr, Zdenek Lokaj, Tomas Zelinka
(pages: 72-78)

Ozone Problem: Final Solution
Konstantin Statnikov, Gregory Kruchenitsky
(pages: 79-83)

Evaluation of Cryptographic Algorithms over an all Programmable SoC (AP SoC) Device
Iván Gutiérrez Agramont, Humberto Calderón
(pages: 84-91)


 

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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