A
Arif Ghafoor
Researcher at Purdue University
Publications - 264
Citations - 8222
Arif Ghafoor is an academic researcher from Purdue University. The author has contributed to research in topics: Access control & Role-based access control. The author has an hindex of 44, co-authored 263 publications receiving 8067 citations. Previous affiliations of Arif Ghafoor include United States Department of the Army & University College West.
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A generalized temporal role-based access control model
TL;DR: This work proposes a generalized temporal role-based access control (GTRBAC) model capable of expressing a wider range of temporal constraints and allows expressing periodic as well as duration constraints on roles, user-role assignments, and role-permission assignments.
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Synchronization and storage models for multimedia objects
Thomas D. C. Little,Arif Ghafoor +1 more
TL;DR: A technique is presented for the formal specification and modeling of multimedia composition with respect to intermedia timing and the synchronization requirements of complex structures of temporally related objects can be easily specified.
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Interval-based conceptual models for time-dependent multimedia data
Thomas D. C. Little,Arif Ghafoor +1 more
TL;DR: N-ary and reverse temporal relations are introduced and defined along with their temporal constraints to ensure a property of monotonically increasing playout deadlines to facilitate both real-time deadline-driven playout scheduling or optimistic interval-based process playout.
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Security models for web-based applications
TL;DR: Using traditional and emerging access control approaches to develop secure applications for the Web with a focus on mobile devices.
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Digital government security infrastructure design challenges
TL;DR: An approach that provides a theoretical foundation for the use of object-oriented databases and object-relational databases in data warehouse, multidimensional database, and online analytical processing applications and introduces a set of minimal constraints and extensions to the Unified Modeling Language for representing multiddimensional modeling properties for these applications.