Tally Hatzakis

Dr. Tally Hatzakis


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 October 2018 in JMIR mHealth and uHealth
Verified
Journal Article
Open access
LHLuke Hutton
Luke Hutton
BPBlaine Price
Blaine Price
RKRyan Kelly
Ryan Kelly
CMCiaran McCormick
Ciaran McCormick
Arosha K. BandaraArosha K. Bandara
Arosha K. Bandara
BNBashar Nuseibeh
Bashar Nuseibeh
Background: The recent proliferation of self-tracking technologies has allowed individuals to generate significant quantities of data about their lifestyle. These data can be used to support health interventions and monitor outcomes. However, these data are often stored and processed by vendors who have commercial motivations, and thus, they may not be treated with the sensitivity with which other medical data are treated. As sensors and apps that enable self-tracking continue to become more sophisticated, the privacy implications become more severe in turn. However, methods for systematically identifying privacy issues in such apps are currently lacking. Objective: The objective of our study was to understand how current mass-market apps perform with respect to privacy. We did this by introducing a set of heuristics for evaluating privacy characteristics of self-tracking services. Methods: Using our heuristics, we conducted an analysis of 64 popular self-tracking services to determine the extent to which the services satisfy various dimensions of privacy. We then used descriptive statistics and statistical models to explore whether any particular categories of an app perform better than others in terms of privacy. Results: We found that the majority of services examined failed to provide users with full access to their own data, did not acquire sufficient consent for the use of the data, or inadequately extended controls over disclosures to third parties. Furthermore, the type of app, in terms of the category of data collected, was not a useful predictor of its privacy. However, we found that apps that collected health-related data (eg, exercise and weight) performed worse for privacy than those designed for other types of self-tracking. Conclusions: Our study draws attention to the poor performance of current self-tracking technologies in terms of privacy, motivating the need for standards that can ensure that future self-tracking apps are stronger with respect to upholding users’ privacy. Our heuristic evaluation method supports the retrospective evaluation of privacy in self-tracking apps and can be used as a prescriptive framework to achieve privacy-by-design in future apps.

25 July 2022 in European Transport Research Review
Verified
Journal Article
Open access
PDF file
AGAnne Goralzik
Anne Goralzik
AKAlexandra König
Alexandra König
LALaura Alčiauskaitė
Laura Alčiauskaitė
THTally Hatzakis
Tally Hatzakis
Introduction: Shared on-demand mobility services emerge at a fast pace, changing the landscape of public transport. However, shared mobility services are largely designed without considering the access needs of people with disabilities, putting these passengers at risk of exclusion. Recognising that accessibility is best addressed at the design stage and through direct participation of persons with disabilities, the objective of this study was to explore disabled users’ views on the following emerging shared mobility services: (a) ride pooling, (b) microtransit, (c) motorbike taxis, (d) robotaxis, (f) e-scooter sharing, and (g) bike sharing. Methodolgy: Using an online mobility survey, we sampled disabled users’ (1) views on accessibility, (2) use intention, and (3) suggestions for improving accessibility. The results reflect the responses of 553 individuals with different types of disabilities from 21 European countries. Results: Projected accessibility and use intention were greatest for microtransit, robotaxis, and ride pooling across different disabilities. In contrast, motorbike taxis, e-scooter sharing, and bike sharing were viewed as least accessible and least attractive to use, especially by persons with physical, visual, and multiple disabilities. Despite differences in projected accessibility, none of the shared mobility services would fulfil the access needs of disabled persons in their current form. Suggestions for increasing the accessibility of these services included (a) an ondemand door-to-door service, (b) an accessible booking app, (c) real-time travel information, and (d) the necessity of accommodating wheelchairs. Conclusions: Our findings highlight the need for improving both vehicles and service designs to cater for the access needs of persons with disabilities and provide policymakers with recommendations for the design of accessible mobility solutions.

1 February 2024 in Urban Science
Verified
Journal Article
Open access
PDF file
THTally Hatzakis
Tally Hatzakis
LALaura Alčiauskaitė
Laura Alčiauskaitė
AKAlexandra König
Alexandra König
Moving is an indispensable component of travelling. This paper discusses the experiences of persons with disabilities when moving around cities on foot or wheels, based on research conducted during the EU-funded project TRIPS. Findings comprise participants’ vignettes from 49 interviews in seven European cities, views on smart assistive technologies (e.g., Augmented Reality) from a pan-European quantitative survey, and design concepts related to walking based on a co-creation workshop that actively engaged persons with various types of disabilities in ideation. Findings suggest that people need reliable and clear wayfaring information on accessible travel routes featuring the coordinated design of streets, pavement, stops, stations, and vehicles to ensure seamless, step-free, and obstacle-free access, as well as disability-sensitive management of disruptions such as maintenance works, for example. Findings also suggest that users are open to using any assistive technology that can enable them to live more independently, assuming it is accessible, and are keen to co-innovate. Finally, we make recommendations for policy changes that can facilitate the redesign of urban infrastructure to make cities more accessible for people with disabilities and drive structural changes in urban planning.

29 March 2022 in Open Research Europe
Verified
Journal Article
Open access
AKAlexandra König
Alexandra König
THTally Hatzakis
Tally Hatzakis
AAAliaksei University of Applied Sciences and Arts Andrushevich
Aliaksei University of Applied Sciences and Arts Andrushevich
EHEvert-Jan Hoogerwerf
Evert-Jan Hoogerwerf
EVElvia Vasconcelos
Elvia Vasconcelos
KAKristina Andersen
Kristina Andersen
The coronavirus disease (COVID-19) outbreak has had considerable impacts on research projects, particularly those adopting participatory approaches. This paper reflects on the methodological adaptations the The EU-funded H2020 research project TRIPS employed to facilitate co-design and open innovation practices towards developing accessible mobility solutions. The paper reports how the methods were adapted to facilitate participatory research without physical meetings. In doing so, the paper presents the alternatives to engage persons with disabilities and institutional stakeholders in the transport ecosystem, e.g., online workshops, social media content analysis, online surveys, and peer-to-peer telephone interviews. Finally, lessons learned for participatory research are presented, and guidelines for increasing the resilience of research designs in light of future changes are discussed

1 January 2019 in The ORBIT Journal
Verified
Journal Article
Open access
PDF file
THTally Hatzakis
Tally Hatzakis
RRRodrigues Rowena
Rodrigues Rowena
WDWright David
Wright David
This case study explores the principal ethical issues that occur in the use of Smart Information Systems (SIS) in smart grids and offers suggestions as to how they might be addressed. Key issues highlighted in the literature are reviewed. The empirical case study describesone of the largest distribution system operators (DSOs) in the Netherlands . The aim of this case study is to identify which ethical issues arise from the use of SIS in smart grids, the current efforts ofthe organisation to address them, and whether practitioners are facing additional issues not addressed in current literature. The literature review highlights mainly ethical issues around health and safety, privacy and informed consent, cyber-risks and energy security, affordability and equity, sustainability. The key topics raised by interviewees revolved around privacy and to some extent cybersecurity. This may be due to the prevalence of the issue within the sector and the company in particular or due to the positions held by interviewees in the organisation. Issues of sectorial dynamics and public trust, codes of conduct and regulation were raised in the interviewswhich are not discussed in the literature. The paper hence highlights the ability of case studies to identify ethical issues not covered (or covered to an inadequate degree) in the academic literature which are facing practitioners in the energy sector.

1 January 2008 in International Journal of Knowledge Management Studies
Verified
Journal Article
Open access
WCWeifeng Chen
Weifeng Chen
THTally Hatzakis
Tally Hatzakis
Based on the analysis of an innovative medium sized enterprise from mainland China, this paper investigated the Knowledge Management (KM) issues by focusing on its KM enablers and process. This paper attempts to investigate how Chinese enterprises absorb knowledge from external sources; how they developed culture to facilitate Knowledge Management Processes (KMPs) and what major challenges they raise for the future by looking at the case study of a Chinese Small and Medium-sized Enterprises (SMEs). The case study indicates that Chinese enterprises emphasised knowledge acquisition and the capacities of knowledge absorption, application, creation, sharing and integration as vital to sustaining competitive advantage for these firms. Corporative organisational culture also has significant impact on the KM in those enterprises.