| Profile based student authentication in online examination A Ullah, H Xiao, M Lilley International Conference on Information Society (i-Society 2012), 109-113, 2012 | 59 | 2012 |
| Using challenge questions for student authentication in online examination A Ullah, H Xiao, M Lilley, T Barker International Journal for Infonomics (IJI) 5 (3/4), 9, 2012 | 46 | 2012 |
| A study into the usability and security implications of text and image based challenge questions in the context of online examination A Ullah, H Xiao, T Barker Education and Information Technologies 24, 13-39, 2019 | 34 | 2019 |
| A dynamic profile questions approach to mitigate impersonation in online examinations A Ullah, H Xiao, T Barker Journal of Grid Computing 17, 209-223, 2019 | 33 | 2019 |
| A deep learning system for health care IoT and smartphone malware detection M Amin, D Shehwar, A Ullah, T Guarda, TA Tanveer, S Anwar Neural Computing and Applications, 1-12, 2022 | 32 | 2022 |
| A classification of threats to remote online examinations A Ullah, H Xiao, T Barker 2016 IEEE 7th Annual Information Technology, Electronics and Mobile …, 2016 | 28 | 2016 |
| The effective use of information technology and interactive activities to improve learner engagement A Ullah, S Anwar Education Sciences 10 (12), 349, 2020 | 26 | 2020 |
| Evaluating security and usability of profile based challenge questions authentication in online examinations A Ullah, H Xiao, T Barker, M Lilley Journal of Internet Services and Applications 5, 1-16, 2014 | 25 | 2014 |
| Optimal clustering in wireless sensor networks for the Internet of things based on memetic algorithm: memeWSN M Ahmad, B Shah, A Ullah, F Moreira, O Alfandi, G Ali, A Hameed Wireless Communications and Mobile Computing 2021, 1-14, 2021 | 14 | 2021 |
| Graphical and text based challenge questions for secure and usable authentication in online examinations A Ullah, H Xiao, T Barker, M Lilley The 9th International Conference for Internet Technology and Secured …, 2014 | 13 | 2014 |
| Usability of profile based student authentication and traffic light system in online examinations A Ullah, H Xiao, M Lilley, T Barker 2012 International Conference for Internet Technology and Secured …, 2012 | 13 | 2012 |
| Intelligent e-learning repository system for sharing learning resources A Alanazi, M Abbod, A Ullah 2014 International Conference on Web and Open Access to Learning (ICWOAL), 1-5, 2014 | 10 | 2014 |
| Privacy and usability of image and text based challenge questions authentication in online examination A Ullah, H Xiao, M Lilley, T Barker 2014 International Conference on Education Technologies and Computers (ICETC …, 2014 | 10 | 2014 |
| Effect of coagulant extracted from almond nutshell (Prunus amygdalus) on synthetic turbid water M Amin, A Ullah, MN Khan, M Zeeshan International Research Symposium on Engineering Advancements, 177-182, 2016 | 9 | 2016 |
| A multi-factor authentication method for security of online examinations A Ullah, H Xiao, T Barker Smart Grid and Internet of Things: Second EAI International Conference …, 2019 | 8 | 2019 |
| Stick: an end-to-end encryption protocol tailored for social network platforms O Basem, A Ullah, HR Hassen IEEE Transactions on Dependable and Secure Computing 20 (2), 1258-1269, 2022 | 6 | 2022 |
| Melanoma Detection Using a Deep Learning Approach S Manzoor, H Qayyum, F Hassan, A Ullah, A Nawaz, A Ur Rahman International Journal of Innovations in Science & Technology 4 (1), 222-232, 2022 | 6 | 2022 |
| Design, privacy and authentication of challenge questions in online examinations A Ullah, H Xiao, M Lilley, T Barker 2013 IEEE Conference on e-Learning, e-Management and e-Services, 46-50, 2013 | 6 | 2013 |
| Evaluating significant features in context‐aware multimodal emotion recognition with XAI methods A Khalane, R Makwana, T Shaikh, A Ullah Expert Systems, e13403, 2023 | 5 | 2023 |
| Usability of activity-based and image-based challenge questions in online student authentication A Ullah, H Xiao, T Barker Human Aspects of Information Security, Privacy, and Trust: Third …, 2015 | 4 | 2015 |
