Towards a general theory of action and time
Artificial Intelligence
Reasoning about change: time and causation from the standpoint of artificial intelligence
Reasoning about change: time and causation from the standpoint of artificial intelligence
Open issues and challenges in providing quality of service guarantees in high-speed networks
ACM SIGCOMM Computer Communication Review
Universal access in digital libraries
ACM Computing Surveys (CSUR) - Special issue: position statements on strategic directions in computing research
Strategic directions in electronic commerce and digital libraries: towards a digital agora
ACM Computing Surveys (CSUR) - Special ACM 50th-anniversary issue: strategic directions in computing research
Principles of multimedia database systems
Principles of multimedia database systems
A Prioritized Petri Net Model and Its Application in Distributed Multimedia Systems
IEEE Transactions on Computers
Multimedia Tools and Applications
Providing Quality of Service Packet Switched Networks
Performance Evaluation of Computer and Communication Systems, Joint Tutorial Papers of Performance '93 and Sigmetrics '93
Electronic Commerce: An Overview
Proceedings of the Workshop at NIST on Electronic Commerce, Current Research Issues and Applications
Communications of the ACM
Data warehousing in environmental digital libraries
Communications of the ACM - Why CS students need math
Self-manifestation of composite multimedia objects to satisfy security constraints
Proceedings of the 2003 ACM symposium on Applied computing
DM-AMS: employing data mining techniques for alert management
dg.o '05 Proceedings of the 2005 national conference on Digital government research
Enhancing pervasive Web accessibility with rule-based adaptation strategy
Expert Systems with Applications: An International Journal
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Digital libraries are concerned with the creation and management of information sources, the movement of information across global networks, and the effective use of this information by a wide range of users. A digital library is a vast collection of objects that are of multimedia nature, e.g., text, video, images, and audio. Users wishing to access the digital library objects may possess varying capabilities, preferences, domain expertise, and may use different information appliances. Facilitating access to complex multimedia digital library objects that suits the users' requirements is known as universal access. In this paper, we present an object manifestation approach in which digital library objects automatically manifest themselves to cater to the users' capabilities and characteristics. We provide a formal framework, based on Petri nets, to represent the various components of the digital library objects, their modality and fidelity, and the playback synchronization relationships among them. We develop methodologies for object delivery without any deadtime under network delays.