Dr Dimitris Giraleas
About
Biography
Dr Dimitris Giraleas is the Programme Director of the BSc in Business Management and Business Analytics and a Senior Lecturer in Business Analytics. He specialises in Efficiency and Productivity Analysis (using non-parametric/DEA and parametric approaches/index numbers, econometric modelling, Stochastic Frontier Analysis), Regulatory Economics and applied Statistics/Econometrics. Prior to joining Surrey Business School, he was a Lecturer in Applied Statistics in Aston Business School, where he designed and lead its BSc in Business Analytics programme. Previously to that, he was an Economics Consultant, with now more than 20 years of experience in the field; Dimitris is still active in consulting, mainly as an Academic Advisor in the area of Utility regulation.
Dimitris is a highly experienced teacher, specialising in quantitative subjects for Business students. Over the 10 years he has been in academia, he has designed and delivered numerous courses/modules, spanning the foundation level, to undergraduate, post-graduate and executive education, working with small groups (around 10 learners) to large cohorts (700+ students), both face-to-face and on-line. He has holds numerous local awards and nominations for his teaching practice (Aston’s Astonishing Academic awards) and is a recognised Fellow of AdvanceHE (previously the Higher Education Academy).
Areas of specialism
University roles and responsibilities
- Programme director of Business Management with Business Analytics BSc
Previous roles
Oxera Consulting and Freelance
Aston Business School
Business, industry and community links
- Yorkshire Water for a Competition and Markets Authority case (2021) – England and Wales Water and Sewerage Service Economic Regulation, topics: Frontier shift/Productivity indices
- Scottish Southern Energy (2020, Transmission) – Energy transmission regulation, topics: Frontier shift/Productivity indices
- Vlaamse Regulator van de Elektriciteits- en Gasmarkt, VREG (2019) – Flemish gas and electricity distribution Regulation, topics: Frontier shift/Productivity indices
- South East Water (2018)– England and Wales Water and Sewerage Service Economic Regulation, topics: Frontier shift/Productivity indices/Efficiency assessment
- German Association of Energy and Water Industries (2016 - 2018) - German Energy Transmission Regulation, topics: Frontier shift/Productivity indices
- The Netherlands Authority for Consumers and Markets. (2015 - 2017) - Dutch Energy Transmission Regulation, topics: Frontier shift/Productivity indices, Price forecasting
- Netze BW GmbH (2016) - German Energy Distribution Regulation, topics: Frontier shift/Productivity indices, Regulatory theory and practice
- Dwr Cymru/Welsh Water. (2014 - 2015) – England and Wales Water and Sewerage Service Economic Regulation, topics: Econometric estimation
- Electricity North West. (2014) - England and Wales Electricity Distribution Economic Regulation, topics: Frontier shift/Productivity indices
- demand and revenue forecasting for rail franchises,
- evidence on the impacts of mergers in the competition of the market for energy and water services in the UK,
- supply and demand forecasting for landfill services in the UK,
- estimating the value of time of train crowding with respect to business commuters in the UK (for High-speed rail)
- make-or-buy analysis for transport services for a waste management company in Belgium
- the effects of an ageing population on the States of Jersey’s fiscal policies
- valuation and costing of water for agricultural/irrigation purposes in the river basin of Strymonas, Greece
Teaching
I have developed and delivered modules in the areas of:
- Performance Assessment and Benchmarking (Data Envelopment Analysis and Stochastic Frontier Analysis)
- Introductory and Advanced Statistics (Introductory Mathematics and Statistics, Applied econometrics, panel data analysis, forecasting and prescriptive analytics)
- Applied Business Analytics and Spreadsheet modelling
- Soft OR (Structured modelling and Soft Systems Methodology)
Teaching Awards:
- Aston Astonishing Academics award for the most Supportive lecturer, 2016
- Aston Astonishing Academics award for the most Engaging lecturer, 2016
- Aston Astonishing Academics nominee for the most Engaging lecturer, 2018
Currently Teaching
MAN2187: Simulation and Optimisation (2nd year, UG)
MAN3202: Business Analytics Challenge Project (Final year, UG)
MANM529: Performance Analytics (PG)
Publications
This paper proposes a new application of Stochastic Frontier Analysis (SFA) for estimating the student performance gap and how this can be used to assess changes of teaching quality at the individual unit-of-study level (module-level). Although there have been other examples in the literature that assess 'efficiency' in student outcomes, this is the first study that proposes the use of SFA specifically at the module level and with the goal of creating an aggregate measure of 'quality', thus avoiding the known issue of the statistical inconsistency of unit-specific SFA estimates. A case study is presented on how the approach can be applied in practice, with discussion on potential implementation issues. This paper is targeted to academics and policy makers that are interested in the quantitative assessment of student outcomes and specifically to those who want to assess how changes in module structure and/or delivery have affected said student outcomes.