Vassilis Kostakos

Methodological Standards in Accessibility Research on Motor Impairments: A Survey

Zhanna Sarsenbayeva, Niels Van Berkel, Eduardo Velloso, Jorge Goncalves, Vassilis Kostakos

Journal article  |  2023  |  ACM COMPUTING SURVEYS

The design and evaluation of accessibility technology is a core component of the computer science landscape, aiming to ensure that..

Mapping 20 years of accessibility research in HCI: A co-word analysis

Zhanna Sarsenbayeva, Niels van Berkel, Danula Hettiachchi, Benjamin Tag, Eduardo Velloso, Jorge Goncalves, Vassilis Kostakos

Journal article  |  2023  |  International Journal of Human-Computer Studies

A pilot randomised controlled trial of the Peer Tree digital intervention targeting loneliness in young people: a study protocol

Michelle H Lim, Lily Thurston, Robert Eres, Thomas L Rodebaugh, Mario Alvarez-Jimenez, David L Penn, Vassilis Kostakos, John FM Gleeson

Journal article  |  2023  |  TRIALS

BACKGROUND: Young people are vulnerable to experiencing problematic levels of loneliness which can lead to poor mental health outc..

"Instant Happiness": Smartphones as tools for everyday emotion regulation

Yaoxi Shi, Peter Koval, Vassilis Kostakos, Jorge Goncalves, Greg Wadley

Journal article  |  2023  |  International Journal of Human-Computer Studies

Smartphone use has become an indispensable aspect of daily life for billions of people. Increasingly, researchers are examining th..

DDoD: Dual Denial of Decision Attacks on Human-AI Teams

B Tag, N van Berkel, S Verma, BZH Zhao, S Berkovsky, D Kaafar, V Kostakos, O Ohrimenko

Journal article  |  2023  |  IEEE Pervasive Computing

Artificial intelligence (AI) systems have been increasingly used to make decision-making processes faster, more accurate, and more..

Understanding How to Administer Voice Surveys through Smart Speakers

J Wei, W Jiang, C Wang, D Yu, J Goncalves, T Dingler, V Kostakos

Journal article  |  2022  |  Proceedings of the ACM on Human-Computer Interaction

Smart speakers have become exceedingly popular and entered many people's homes due to their ability to engage users with natural c..

Near-infrared Imaging for Information Embedding and Extraction with Layered Structures

W Jiang, D Yu, C Wang, Z Sarsenbayeva, N Van Berkel, J Goncalves, V Kostakos

Journal article  |  2022  |  ACM Transactions on Graphics

Non-invasive inspection and imaging techniques are used to acquire non-visible information embedded in samples. Typical applicatio..

Emotion trajectories in smartphone use: Towards recognizing emotion regulation in-the-wild

Benjamin Tag, Zhanna Sarsenbayeva, Anna L Cox, Greg Wadley, Jorge Goncalves, Vassilis Kostakos

Journal article  |  2022  |  INTERNATIONAL JOURNAL OF HUMAN-COMPUTER STUDIES

Emotion has long been acknowledged as an important part of technology user experience. More recently, research has begun to catalo..

QoS-aware placement of microservices-based IoT applications in Fog computing environments

S Pallewatta, V Kostakos, R Buyya

Journal article  |  2022  |  Future Generation Computer Systems

The Fog computing paradigm, offering cloud-like services at the edge of the network, has become a feasible model to support comput..

A System for Computational Assessment of Hand Hygiene Techniques

Chaofan Wang, Weiwei Jiang, Kangning Yang, Zhanna Sarsenbayeva, Benjamin Tag, Tilman Dingler, Jorge Goncalves, Vassilis Kostakos

Journal article  |  2022  |  JOURNAL OF MEDICAL SYSTEMS

The World Health Organization (WHO) recommends a six-step hand hygiene technique. Although multiple studies have reported that thi..