Negoslav Sabev, Galya Georgieva-Tsaneva, Galina Bogdanova


The software systems that millions of users use everyday around the world are mainly targeted at the main and the largest average group of people - people without disabilities. However, software systems are often inaccessible and unusable for another group of people - people with congenital or acquired disabilities. For a system to be accessible to people with special needs, it must be designed to take account of and be geared to their specific needs, opportunities for using the software systems and the hardware that provides them. This paper presents a model for creating a software system (for a physiological data analysis) that takes into account the needs of people with disabilities and in particular people with visual deficits. This model will ensure the assibilites of the software system and its easy use by both this target group and people without disabilities.


software systems, people with disabilities, accessibility

Full Text:



Atanasova M., Malinova A. (2017) Transforming Concur Task Trees Model into an Abstract User Interface. CBU International Conference оn Innovations in Science and Education. March 22-24, 2017, Prague, Czech Republic, 1036-1041. Retrieved from

Balan R.V.S. and Punithavalli M. (2010) Software Architecture, Scenario and Patterns. International Journal of Computer Science Issues, Vol. 7, Issue 5, 418-423. Retrieved from

Bogdanova G., N. Sabev, G. Tomov. (2016) Наръчник за уеб достъпност [Web Accessibility Guide], Horizons Fondation, Sofia“, Retrieved from

Bogdanova G., Sabev N., (2017) The second principle of operability in the standart for web accessibility WCAG 2.0., XV-National Conference with international participation “Libraries – reading-communications” – Digital conversion of literary and cultural heritage, 302-314.

Bogdanova G., Todorov T., Georgieva-Tsaneva G. (2017) Software Approaches and Мethods to Еnsure the Security of Interactive Systems. Cybernetics and Information Technologies. (in Press)

Ferre X., Juristo N., Windl H., Constantine L., (2001) Usability Basics for Software Developers. IEEE SOFTWARE, 22- 29. Retrieved from

Georgieva-Tsaneva G. (2017) Същност на интерактивните системи, сигурност и достъпност. [Nature of Interactive System, Security and Accessibility] . Cultural and Historical Heritage: Preservation, presentation, digitalization. Volume 3, ISSN 2367-8038, 138-147, Retrieved from

Georgieva-Tsaneva, G., Bogdanova, G., Sabev N. (2017) Characteristics of Interactivity and using the interactive Technologies in System North+. Seventh International Conference Digital Presentation and Preservation of Cultural and Scientific Heritage, Volume VII, IMI-BAS, Sofia, ISSN:1314-4006, 133-141.

Gregor P., Newell A.F. and Zajicek M. (2002) Designing for Dynamic Diversity - Interfaces for Older People. In Proceedings of The Fifth International ACM Conference on Assistive Technologies (ASSETS), Edinburgh, 151-156. Retrieved from

ISO 9241-11:1998 , Ergonomic Requirements for Office Work with Visual Display Terminals, Geneva, 1998. Retrieved from

Landauer T. K. (1995) The Trouble with Computers: Usefulness, Usability and Productivity. MIT Press, Cambridge. Retrieved from;cc=acls;view=toc;idno=heb01144.0001.001

Morgan M., McGee-Lennon M., Hine N., Arnott J., Martin C., Clark J., Wolters M. (2007) Requirements Gathering with diverse user groups and stakeholders, CHI 2007, San Jose, USA, 1-4. Retrieved from

Nganji J. T. and Nggada S. H.(2011) Disability-Aware Software Engineering for Improved System Accessibility and Usability . International Journal of Software Engineering and Its Applications Vol. 5 No. 3, 47-62. Retrieved from

Oviatt S. (2001) Designing Robust Multimodal Systems for Diverse Users and Environments:" In Workshop on Universal Accessibility of Ubiquitous Computing: Providing for the Elderly.

Petrie, H. (2009) The evaluation of accessibility, usability and user experience, The Universal Access Handbook, C Stepanidis (ed), CRC Press. Retrieved from

Scottish Executive. (2004) First Report for the Range and Capacity Review of Community Care Services for Older People: Projections of Community Care Services Users, Workforce and Costs. Edinburgh, Scotland, UK. Retrieved from

Screen Reader User Survey #7 Results, Retrieved from

Sherman P. (2001) Cost-Justifying Accessibility. austin usability. Retrieved from

W3C (2000). Techniques for accessibility evaluation and repair tools. W3C Working Draft. Cambridge: W3C. Retrieved from

Ted S. Hasselbring, Candyce H., Glase W. (2000) Use of Computer Technology to Help Students with Special Needs, The Future of Children CHILDREN AND COMPUTER TECHNOLOGY, Vol. 10 • No. 2, 102-122. Retrieved from

Tramonti M., Paneva-Marinova D., Pavlov R. Math and Art Convergence for Education. CBU International Conference оn Innovations in Science and Education. March 22-24, 2017, Prague, Czech Republic, 851-854. Retrieved from

W3C (1999). Web content accessibility guidelines 1.0. W3C Recommendation. Cambridge: W3C. Retrieved from

Web Content Accessibility Guidelines (WCAG) Overview, Retrieved from

Web Content Accessibility Guidelines 1.0, Retrieved from

Web Content Accessibility Guidelines (WCAG) 2.0, Retrieved from



  • There are currently no refbacks.

Print ISSN 1805-997X, Online ISSN 1805-9961

(c) 2018 CBU Research Institute s.r.o.

For more information on the conference visit