S. Khaddaj, A. Adamu, M. Morad, “Construction of an Integrated Object Oriented System for Temporal GIS" in 'American Journal of Applied Sciences', Science Publications, to appear (2006)

S. Khaddaj, G. Horgan, "A Proposed Adaptable Quality Model for Software Quality Assurance", Journal of Computer Science, Science Publications , Volume 1, Issue 4, pp. 481-486, (2005).

S. Khaddaj, "An Object Oriented Framework for the Management of Compound Documents", Asian Journal of Information Technology, Grace Publications, Volume 4, Issue 9, pp. 845-851, (2005).

S. Khaddaj, G. Horgan, “The Evaluation of Software Quality Factors in Very Large Information Systems”, Electronic Journal of Information Systems Evaluation Volume 7 Issue 1, pp 43-48, (2004).

S. Khaddaj A. Adamu, M. Morad, “Object orientation and Information Management”, Information and Software Technology Journal, Volume 46, Issue7, pp 491-498, Elsevier, June (2004).

S. Khaddaj, "An Object Oriented Approach for Document Management", International Conference on Enterprise Information Systems, pp 558-562, Porto, Portugal, (2004).

B. Makoond, S. Khaddaj, C. Saltmarsh, M. Tunnicliffe, “A Study on the Development of Petri Net Methodology for the Development of Distributed Applications”, PGnet 2004, Liverpool, (2004)

H. Elsidani Elariss, S. Khaddaj, R Haraty, “Towards a New Visual Query Language for GIS” in International Conference on Database Applications, Austria, to appear (2006).

D CC Ong, R Sileika, S Khaddaj, R Oudrhiri, ”Data Management System Evaluation for Mobile Messaging Services, in International Conference on Enterprise Information Systems, Cyprus, to appear (2006).

H. Elsidani Elariss, S. Khaddaj, R Haraty, “An Evaluation of a Visual Query Language for Information Systems” in International Conference on Enterprise Information Systems, Cyprus, to appear (2006).

A. Adamu, S. Khaddaj, M. Morad, "Object Model for Temporal Changes in Geographical Information Systems" in M. Deakin, R. Mansberger, B Dixon-Gough, "Methodologies, Models and Instruments for Rural and Urban Development", Chapter X, International Land Management Series, Ashgate Publishing, ISBN/ISSN 0 7546 3415 9, (2004).

S. Khaddaj, "An Object Oriented GIS model for Emergency Response Applications", CALGIS, San Jose, USA, (2004).

A. Adamu, S. Khaddaj, M. Morad, “The Evaluation of a Spatio-Temporal GIS Model for Tracking the Continuity of Geographical Objects”, in GIS Research – UK, Editor J. Wood, pp. 115-123, City University, 2003. To appear in Computers, Environment and Urban Systems Journal, Elsevier.

A. Adamu, S. Khaddaj, M. Morad, "A Unified Object-Oriented System for Continuous Pattern Analysis for Temporal GIS", GIS Research - UK, Editors S. Wise, P. Brindly,Y. Kim and C. Openshow, pp. 239-244, University of Sheffield, (2002).

S. Khaddaj, G. Horgan, "Factors in Software Quality for Advanced Computer Architectures", ESCOM-SCOPE, pp. 437-442, (2001).

B Li, G. Wilkinson, S. Khaddaj, "Cell-based Model For GIS Generalization",GeoComputation 2001, University of Queensland, (2001)

A. Adamu, S. Khaddaj, M. Morad, "The Semantics for the Determination of Temporal Relationships for Geographical Objects", GeoComputation 2001, University of Queensland, (2001).

A. Adamu, S. Khaddaj, M. Morad, "A Framework for Tracking the Evolution of Objects in GIS", GIS Research - UK, Editors D.B. Kidner and G. Higgs, pp. 304-310, Cardiff University, (2001).

A. Adamu, S. Khaddaj, M. Morad, "An Object Model for Temporal Changes in GIS", International Land Management, 2001. Also in Detecting Environmental Change: Science and Society, London, UK, July (2001),

G. Horgan, S. Khaddaj, P. Forte, “Function Point Analysis: The Development of an Early Lifecycle Estimate”, UK metrics conference, (2000).

G. Horgan, S. Khaddaj, P. Forte, "An Essential Views Model for Software Quality Assurance", ESCOM-SCOPE 99, (1999).

F. Marir and M. Alshawi and S. Khaddaj. A Case-Based Design Brief Development and Design Plans Generation for Construction Projects. The AICIVIL-COMP99 Conference, 13-15 September 1999 in Oxford, England.

G. Horgan, S. Khaddaj, P. Forte, "Construction of an FPA-type Metric for Early Lifecycle Estimation", Information and Software Technology Journal, Vol 40, pp 409-415, Elsevier, (1998).