My teaching discusses heating, ventilation and lighting services using a bottom-up approach, questioning firstly whether there is a need for particular services, and then whether provision be met through design of the building form and format – a mixture of conservation and passive approaches. Is it possible for dwellings in the UK to be comfortable in winter without mechanical heating systems?

Of course in many situations mechanical systems are needed, and thus services are discussed to give the architect sufficient ideas for practice: what services are needed, where are the main items located and what size are they, and what questions should I ask the building services consultant? These ideas are delivered through lectures and tutorials for studio projects. Currently, my teaching centres on two areas:

Supervision of PhD students investigating lighting and thermal design.

Part I and II: Environmental design and lighting.

REF coordinator

I am interested in lighting, visual perception and visual performance, for electric lighting and daylighting. Questions include:

• the effect of lamp spectrum on spatial brightness.
• road lighting for pedestrians.
• user-control as a means of maintaining satisfaction.
• approaches for establishing appropriate light levels.
• the influence of test procedure on the results of an experiment.

MERLIN: Mesopically Enhanced Road Lighting: Improving Night-vision. £417,588. EPSRC award to S Fotios, March 2011.

Lighting for the classroom of the future; acceptability of screen glare. £31,009. EPSRC award to S Fotios (PI) & R Parnell (CI), May 2008.

Street Lighting: A metric for specifying white light. £172,936. EPSRC award to S Fotios, June 2008.

Obstacle Detection: Investigating the effects of source type and luminance. £26,780. Philips Lighting sponsored project, June 2007.

Research into the effects of road surface material on road lighting performance. £33,002. Department for Transport sponsored project, January 2005.

Research into the circuit wattage of discharge lamps used in public lighting. £30,282. Department for Transport sponsored project, June 2004.

Purchase of a spectroradiometer. £34,276. EPSRC award to S Fotios, July 2004.

White Light: an investigation of the perception of exterior lighting. £137,665. EPSRC award to S Fotios, June 2003.

Chris Cheal: PhD student (9/2003 to 8/2006); RA (2007 to present). Investigations of street lighting for pedestrians – brightness and obstacle detection. Supervision of lighting research laboratory.

Current PhD students:

• James Uttley (2012 - ); Establishing light levels for pedestrians.
• Biao Yang (2011 - ); Recognition of facial expressions under road lighting.
• Jemima Unwin (2011 - ); Road lighting and reassurance for pedestrians.
• Ida Gohardoust Monfared (2011- ); Investigating bias in POE questionnaires.
• Deniz Atli (2010 - ); Lamp spectrum and spatial brightness.
• Oscar Preciado (2007 - ); Energy efficient thermal comfort services for Mexico (North west).

Past PhD students:

• Wael Sheta (2007-2012); Passive cooling techniques for a dwelling in Cairo.
• Satta (Tom) Panyakaew (2006-2012); Using agricultural waste as a thermal insulation material in Thailand.
• Tharinee Ramasoot (2006–2010); Investigation of lighting and disturbing reflections on display screens: A new model for judging acceptability.
• Alison Ching-Lan Chang (2005–2009); Wayfinding in unfamiliar environments.
• Navaz Davoudian (2004–2007); Saliency of urban objects: the effects of proximity and density of background objects.

Journals

• Member of the editorial board of Lighting Research & Technology since 2000; secretary since November 2006.
• Regional Associate Editor (Europe) for Leukos.
• International advisory board member of Architectural Science Review and Ingineria Iluminatului.
• Reviewer for Building & Environment, Ophthalmic & Physiological Optics, Journal of Environmental Psychology.

Committees

Institution of Lighting Professionals (ILP)
– Chairman of white light committee (2007-2008); produced ILE Technical Report TR29: White Light, 2008.
– Chairman of ILP mesopic lighting committee (2009-2012): produced PLG03, Lighting for Subsidiary Roads: Using white light sources to balance energy efficiency and visual amenity
– Member of ILP road surface and luminance committee (2009-)

Society of Light & Lighting (SLL)
– Member of committee reviewing Lighting Guide LG5 (2008-2010), producing LG5 Lighting for Education (2011).

British Standards (BSI)
– Member of BSI road lighting committee CPL/34/8 (2007-) producing update of BS5489-1 due in 2012/2013

Illuminating Engineering Society of North America (IESNA)
– Chairman of brightness subcommittee of the Visual Effects of Lamp Spectral Distribution Committee (2008-)

International Committee on Illumination (CIE)
– Chairman of TC1-80, Research Methods For Psychophysical Studies Of Brightness Judgements (2010-).
– UK co-ordinator for Division 5 (Exterior And Other Lighting Applications) of the CIE (2007-).
– Member and principal author of CIE TC4.48: white light (2008-).
– Member of TC 1-78 Evaluation of Visual Performance in the Real Lit Environment (2010-)

Conferences

– Organisation + Planning

• LumeNet 2012. A new conference for PhD students. Sheffield, June 2012
• Night Vision – Lighting For Residential Roads. MERLIN symposium, City University London. 30th June 2011.
• Academic forum (PhD methodology workshops) at the Velux Daylighting Symposium, Lausanne, May 2011.

– Member of scientific committee:

• Experiencing Light, Eindhoven, October 2009
• CIE expert symposium 2010: When appearance meets lighting.
• CIE 2012 conference: Lighting Quality & Energy Efficiency. Hangzhou, China. September 2012.

– Chairman of conference sessions:

• CIE visual appearance expert symposium 2010
• 6th Lux Pacifica, Bangkok, 23-25 April 2009
• CIE Urban Nightscape Conference 2006, Athens, September 2006

Invited events / presentations

1. Research on Lighting for Pedestrians. Keynote presentation, CIE 2012 Lighting Quality & Energy Efficiency, Hangzhou, China, September 2012.
2. Light levels for pedestrians – are they correct? Workshop at CIE 2012 Lighting Quality & Energy Efficiency, Hangzhou, China, September 2012.
3. Residential Street Lighting: Optimising Spectral Power Distribution for pedestrian tasks. CIE Expert Workshop on Mesopic Photometry, CIE Central Bureau, Vienna/AT, 24 – 25 January 2012..
4. 8th China International Exhibition and Forum on Solid State Lighting. Keynote lecture in Market, Technology and Application of Roadway Lighting. November 2011.
5. Velux Daylighting Symposium, Lausanne, May 2011. Highlights of the academic forum.
6. PLDA Educators Forum, Milan, April 2011.
7. Measuring Spatial Brightness. Margaret Halstead memorial meeting: The Colour of Light …. City University, 2nd March 2011.
8. Lighting for Pedestrians in Residential Streets. Stockholm Lighting Days. Stockholm, 25-26 February 2010
9. Mesopic vision research, SLL seminar, Institution of Structural Engineers, Tuesday, 14th October 2008.
10. Effects of SPD on the Appearance of Spaces and on Visual Performance, Symposium on Lighting and Human Performance, NPL Optical Radiation Measurement Club, 14th December 2006
11. Presentation to lead discussion on Light Colour Specification. Lighting Research & Technology colloquium Light and Human Response with Respect to Lighting Application, UCL, London, 23rd February 2006

Peer-reviewed journals

Yang B and Fotios S. Inter-personal Judgements for Pedestrians at Night: Exploring Information Perceived at Different Distances. Ingineria Iluminatului. in press

Fotios S, Cheal C. Using obstacle detection to identify appropriate illuminances for lighting in residential roads. Lighting Research & Technology, in press. first published on April 20, 2012 as doi:10.1177/1477153512444112

Logadóttir Á, Fotios SA, Christoffersen J, Hansen SS, Corell DD, Dam Hansen C, Investigating the use of an adjustment task to set preferred colour of ambient illumination, Colour Research & Application, in press. Article first published online : 15 SEP 2011, DOI: 10.1002/col.20714

Fotios S and Atli D. Comparing Judgements of Visual Clarity and Spatial Brightness Through an Analysis of Studies Using the Category Rating Procedure. Leukos, 2012; 8(4); 261-281.

Ramasoot T and Fotios SA, Lighting and display screens: Models for predicting luminance limits and disturbance, Lighting Research & Technology, 2012; 44(2); 197-223

Fotios S and Goodman T. Proposed UK Guidance for Lighting in Residential Roads. Lighting Research & Technology, 2012; 44(1); 69-83. (invited for special issue)

Unwin J, Fotios S. Does lighting contribute to the reassurance of pedestrians at night-time in residential roads? Ingineria Iluminatului, 2011; 13(2); 29-44.

Logadóttir Á, Christoffersen J and Fotios SA. Investigating the use of an adjustment task to set preferred illuminance in a workplace environment. Lighting Research & Technology, 2011; 43(4); 403-422.

Fotios SA, Logadóttir Á, Cheal C, Christoffersen J. Using adjustment to define preferred illuminances: Do the results have any value? Light & Engineering, in press

Atli D and Fotios S. Rating Spatial Brightness: Does The Number Of Response Categories Matter? Ingineria Iluminatului, 2011; 13(1); 15-28

Panayakaew S and Fotios SA. New thermal insulation boards made from coconut husk and bagasse. Energy & Buildings, 2011; 43(7); 1732-1739

Fotios SA & Cheal C, Predicting Lamp Spectrum Effects At Mesopic Levels. Part 1: Spatial Brightness, Lighting Research & Technology, 2011; 43(2); 143-157. DOI: 10.1177/1477153510393932

Fotios SA & Cheal C, Predicting Lamp Spectrum Effects At Mesopic Levels. Part 2: Preferred Appearance and Visual Acuity, Lighting Research & Technology, 2011; 43(2); 159-172. DOI: 10.1177/1477153510393933

Fotios S, Lighting in offices: Lamp spectrum and brightness. Coloration Technology, 2011; 127(2): 114-120 (invited article).
Fotios S & Raynham P, Correspondence: Lighting for pedestrians: Is facial recognition what matters? Lighting Research & Technology 2011; 43(1): 129-130

Fotios SA & Cheal C, Brightness Matching With Visual Fields Of Different Types, Lighting Research & Technology 2011; 43(1); 73-85
Fotios S & Ramasoot T. New lighting recommendations for the Classroom of the Future based on luminous parameters of display screen equipment. Journal of Light and Visual Environment, 2010; 34(3); 165-169

Fotios SA & Cheal C, Stimulus range bias explains the outcome of preferred-illuminance adjustments. Lighting Research & Technology, 2010; 42(4); 433-447

Fotios SA & Cheal C, A Comparison of Simultaneous and Sequential Brightness Judgements. Lighting Research & Technology, 2010; 42(2); 183-197

Fotios S & Cheal C, Road lighting for pedestrians in residential areas: Choosing the optimum lamp colour characteristics, Light & Engineering, 2010; 18(1); 91-100

Fotios S & Cheal C, Road lighting for pedestrians in residential areas: Choosing the optimum lamp colour characteristics, Svetotekhnika, 2009; 6; 28-36 (Russian language)

Fotios S & Cheal C, Correspondence. Correction: Lighting for subsidiary streets: Investigation of lamps of different SPD. Part 2 – Brightness, Lighting Research & Technology, 2009; 41(4); 381-383

Fotios SA & Cheal C. Obstacle detection: A pilot study investigating the effects of lamp type, illuminance and age. Lighting Research & Technology, 2009; 41(4); 321-342

Houser KW, Fotios SA, Royer MP. A Test of the S/P Ratio as a Correlate for Brightness Perception using Rapid-Sequential and Side-by-Side Experimental Protocols. Leukos, 2009: 6(2); 119-137

Boyce PR, Fotios S & Richards M, Road lighting and energy saving, Lighting Research & Technology, 2009: 41(3); 245-260

Chang CL & Fotios SA, Building design to improve the ease of wayfinding in unfamiliar buildings, Design Principles and Practises, 2009; 3(4); 237-248

Ramasoot T & Fotios SA, Lighting for the Classrooms of the Future. Electronic classrooms: a new challenge for school lighting guidance, Light & Engineering, 2009; 17(2); 62-70.

Ramasoot T & Fotios SA, Lighting for the Classrooms of the Future. Electronic classrooms: a new challenge for school lighting guidance, Svetotekhnika, 2009; (2); 28-34 (Russian language)

Fotios S, Comment on ‘Technical and economic analysis of road lighting solutions based on mesopic vision, Building and Environment, 2009; 44; 2006-2007

Fotios SA & Houser KW, Research Methods to Avoid Bias in Categorical Ratings of Brightness, Leukos, 2009; 5(3); 167-181

Fotios SA, Houser KW, & Cheal C, Counterbalancing needed to avoid bias in side-by-side brightness matching tasks, Leukos, 2008; 4(4); 207-223

Fotios SA & Cheal C, The Effect of a Stimulus Frequency Bias in Side-By-Side Brightness Ranking Tests, Lighting Research & Technology, 2008; 40(1); 43-54

Fotios SA & Cheal C, Lighting for subsidiary streets: investigation of lamps of different SPD. Part 2 – Brightness, Lighting Research & Technology, 2007; 39(3); 233-252

Fotios SA & Cheal C, Lighting for subsidiary streets: investigation of lamps of different SPD. Part 1 – Visual Performance, Lighting Research & Technology, 2007; 39(3); 215-232

Fotios SA & Cheal C, Evidence For Response Contraction Bias In Side-By-Side Matching Tasks, Lighting Research & Technology, 2007; 39(2); 159-169

Fotios SA, Chromatic adaptation and the relationship between lamp spectrum and brightness, Lighting Research & Technology, 2006; 38(1); 3-17

Fotios SA, Cheal C & Boyce PR, Light Source Spectrum, Brightness Perception and Visual Performance in Pedestrian Environments: A Review, Lighting Research & Technology, 2005; 37(4); 271-294. (Received the Leon Gaster Award 2006 from the Society for Light & Lighting)

Fotios S & Gado T, A comparison of visual objectives used in side-by-side matching tests, Lighting Research & Technology, 2005; 37(2); 117-131

Fotios SA, Experimental conditions to examine the relationship between lamp colour properties and apparent brightness, Lighting Research & Technology, 2002; 34(1); 29-38

Fotios SA, An error in brightness matching associated with the application of dimming, Lighting Research & Technology, 2001; 33(4); 223-231

Fotios SA, Lamp colour properties and apparent brightness: a review, Lighting Research & Technology, 2001; 33(3); 163-181

Fotios SA, Correspondence: An investigation into the relationship between luminance and brightness of strongly chromatic light sources by K van Creveld, Lighting Research & Technology, 2000; 32(4); 234-235

Fotios SA & Levermore GJ, Chromatic effect on apparent brightness in interior spaces, I: Introduction and colour gamut models, Lighting Research & Technology, 1998; 30(3); 97-102

Fotios SA & Levermore GJ, Chromatic effect on apparent brightness in interior spaces, II: SWS lumens model, Lighting Research & Technology, 1998; 30(3); 103-106

Fotios SA & Levermore GJ, Chromatic effect on apparent brightness in interior spaces, III: Chromatic brightness model, Lighting Research & Technology, 1998; 30(3); 107-110

Fotios SA & Levermore GJ, Perception of electric light sources of different colour properties, Lighting Research & Technology, 1997; 29(3); 161-171

Fotios SA & Levermore GJ, Visual perception under tungsten lamps with enhanced blue spectrum, Lighting Research & Technology, 1995; 27(4); 173-179

Journals – not peer reviewed

Fotios S & Sharples S. Sustainable lighting. Sustainable Communities, 2009; 5; p.15

Fotios S, Lighting: Nice but dim, Building Sustainable Design, 2009; 1(2); 51-52

Fotios S & Cheal C, Lamp Spectrum, Illuminance and the Pedestrian’s Ability to Detect Obstacles, Lighting Journal, 2008; 73(6); 35-41

Fotios S & Fisher A, Lighting in Local Roads : A comparison of Guidance in Australia and the UK on lamp colour and illuminance, Lighting Art & Science for International Designers, June 2008, p28-37

Fotios SA & Cheal C, Limitations to the Application of the White Light Trade-Off in Street Lighting, Lighting Journal, December 2006; 71(6): 24-29. (see also p5 & p17)

Fotios SA & Boyce PR, Ellis CE, Reflecting current trends, Surveyor Magazine, 13th July 2006; No. 58896, Vol. 194; 16-18

Fotios SA & Boyce PR, Ellis CE, The Effect of Pavement Material on Road Lighting Performance, The Lighting Journal, 2006; 71(2); 35-40

Fotios SA, Boyce PR, & Forster R, The Power Demand of Discharge Lamps Used in Public Lighting, The Lighting Journal, 2005; 70(2); 32-37.

Fotios S and Cheal C, Is white light the right light?, The Lighting Journal, 2005; 70(1); 22-25.

Conference/Seminar presentations

Fotios S. New Guidance for Lighting in Residential Streets: Lamp Type and Illuminance. Local Authority Lighting 2012. The 16th Annual Surveyor and ILP Street Lighting Conference. June 26th 2012, Leicester. Invited Presentation

Fotios S, Unwin J and Yang B. Lighting in Residential Roads: What do we need to perceive? Predicting Perceptions: The 3rd International Conference on Appearance. Heriot-Watt University, Edinburgh, 17-19 April 2012.

Fotios S, Atli, D. Comparing Judgements of Visual Clarity and Spatial Brightness. Predicting Perceptions: The 3rd International Conference on Appearance. Heriot-Watt University, Edinburgh, 17-19 April 2012.

Fotios S, Atli D, Cheal C, Houser K and Cheal, Logadóttir A. A Review of Lamp Spectrum and Spatial Brightness. Predicting Perceptions: The 3rd International Conference on Appearance. Heriot-Watt University, Edinburgh, 17-19 April 2012.

Fotios S, Residential Street Lighting: Optimising Spectral Power Distribution for pedestrian tasks. CIE Expert Workshop on Mesopic Photometry, CIE Central Bureau, Vienna/AT, 24 – 25 January 2012. Invited Presentation

Fotios S. Spectral Power Distribution: The optimum SPD for pedestrian lighting. 8th China International Exhibition and Forum on Solid State Lighting. Keynote lecture in Market, Technology and Application of Roadway Lighting. Guangzhou, China. Invited Keynote lecture

Fotios SA, Logadóttir Á, Cheal C, Christoffersen J. Using adjustment to define preferred illuminances: Do the results have any value? 27th Session of the CIE, Sun City, South Africa, 10-15 July 2011. Volume 1, 203-212

Fotios S, Ramasoot T. Which comes first, the laptop or the lighting? 27th Session of the CIE, Sun City, South Africa, 10-15 July 2011. Volume 2, 830-840

Fotios S, Goodman T. Proposed UK guidance for lighting in residential roads. 27th Session of the CIE, Sun City, South Africa, 10-15 July 2011.Volume 1, 345-356

Fotios S. Review of research on light source SPD in street lighting. Night Vision: Lighting for Residential Roads. MERLIN symposium, City University, 20/06/2011.

Fotios S, Measuring Spatial Brightness. Margaret Halstead memorial meeting: The Colour of Light …. City University, 2nd March 2011 (invited contribution)

Fotios S, Proposal for proportional light level reduction in S and ME class roads, ILP/ILE annual conference, 22nd September 2010.

Fotios S & Cheal C, Road lighting for pedestrians in residential areas: Choosing the optimum lamp colour characteristics. SELECTED PAPERS of the CIE Light and Lighting Conference with Special Emphasis on LEDs and Solid State Lighting. 27-29 May 2009, Budapest, Hungary, CIE x034:2010. pp 29-38

Fotios S, Houser K, Cheal C & Royer M. A Comparison Of Simultaneous And Sequential Evaluations Of Spatial Brightness Suggests The Pupil Size Mechanism Is Not Responsible For Spatial Brightness. Proceedings of CIE 2010 Lighting Quality and Energy Efficiency, 14-17 March 2010, Vienna. pp 428-438

Fotios S & Cheal C. Predicting Spatial Brightness At Mesopic Levels. Proceedings of CIE 2010 Lighting Quality and Energy Efficiency, 14-17 March 2010, Vienna. pp 465-474

Fotios S & Cheal C. Stimulus Range Bias And Estimates Of Preferred Illuminance. Proceedings of CIE 2010 Lighting Quality and Energy Efficiency, 14-17 March 2010, Vienna. pp 525-532 (poster)

Fotios SA, Lighting for pedestrians in residential streets. Stockholm Lighting Days 2010, 25/26 February 2010. Invited Presentation

Fotios SA & Houser K, Tuning the spectrum of lighting to enhance spatial brightness: Investigations of research methods. Experiencing Light 2009. 26-27 October 2009, Eindhoven, pp 41-52

Fotios S & Houser K, Tuning Lamp Spectral Power to Improve the Perception of Interior Spaces, Lux Europa; 11th European Lighting Conference, Istanbul, 9-11 September 2009, pp. 417-422

Fotios S & Cheal C, Spectrum-Balanced Illuminance Reductions For Exterior Lighting, Lux Europa; 11th European Lighting Conference, Istanbul, 9-11 September 2009, pp. 1207-1212

Fotios S & Cheal C, Lighting Spectrum And Obstacle Detection For Pedestrians, Lux Europa; 11th European Lighting Conference, Istanbul, 9-11 September 2009, pp. 1171-1176

Fotios S & Ramasoot T, Developing a model to predict user acceptability of display screen reflections, Lux Europa; 11th European Lighting Conference, Istanbul, 9-11 September 2009, pp. 513-520

Davoudian N & Fotios S, The Impact of Spatial Characteristics of Background Lighting on the Visual Saliency of Urban Objects, Lux Europa; 11th European Lighting Conference, Istanbul, 9-11 September 2009, pp. 1121-1126

Preciado Perez OA & Fotios SA, Thermal Response of Dwellings in Northwest Mexico: Applying passive design strategies. Proc. 26th International Conference on Passive and Low Energy Architecture (PLEA 2009), 22-24 June 2009, Quebec, Canada. (poster)

Ramasoot T & Fotios S, The model of DSE user acceptability and performance: the derivation of new lighting recommendation for the Classroom of the Future. Proc. 26th International Conference on Passive and Low Energy Architecture (PLEA 2009), 22-24 June 2009, Quebec, Canada, pp269-274

Panyakaew S & Fotios S, Life Cycle Energy Analysis of thermal insulation made from agricultural waste materials in Thailand. Proc. 26th International Conference on Passive and Low Energy Architecture (PLEA 2009), 22-24 June 2009, Quebec, Canada. (poster)

Fotios S & Cheal C, Road lighting for pedestrians in residential areas: Choosing the optimum lamp colour characteristics, CIE Light & Lighting conference, Budapest, 27-29 May 2009.

Fotios S & Houser K, Tuning the spectrum to match human vision: An opportunity for LED arrays CIE Light & Lighting conference, Budapest, 27-29 May 2009. (poster)

Fotios S & Houser K, Visual Effects of Lamp Spectrum: the Perception of Interior Spaces, Proc. of the 6th Lux Pacifica, Bangkok, 23-25 April 2009, pp13-16

Fotios S & Cheal C, Lighting Spectrum and Obstacle Detection for Pedestrians, Proc. of the 6th Lux Pacifica, Bangkok, 23-25 April 2009, pp107-110

Fotios S & Cheal C, The Specification of White Exterior Lighting, Proc. of the 6th Lux Pacifica, Bangkok, 23-25 April 2009, pp93-96

Fotios S & Ramasoot T, New lighting recommendations for the Classroom of the Future based on luminous parameters of display screen equipment, Proc. of the 6th Lux Pacifica, Bangkok, 23-25 April 2009, pp131-134

Chang CL & Fotios SA, Building design to improve the ease of wayfinding in unfamiliar buildings, Design Principles & Practises conference, Berlin, February 2009, oral presentation (no proceedings)

Panyakaew S & Fotios S, Agricultural waste materials as wall insulation for residences in Thailand: results from a preliminary study, The Eighth International Conference on EcoBalance, Japan, December 2008, CD proceedings, article P-092

Ramasoot T & Fotios SA, Acceptability of screen reflections: lighting strategies for improving quality of the visual environment in classrooms of the future, PLEA 2008, Dublin, October 2008. (Proc on CD only)

Panyakaew S & Fotios SA, Agricultural waste materials as thermal insulation for dwellings in Thailand: Preliminary Results, PLEA 2008, Dublin, October 2008. (Proc on CD only)

Fotios SA, Mesopic vision research, SLL seminar, Institution of Structural Engineers, Tuesday, 14th October 2008. Invited presentation

Ramasoot T & Fotios SA, Lighting for the Classrooms of the Future. Electronic classrooms: a new challenge for school lighting guidance. Balkan Light 2008, Ljubljana, Slovenia, 7–9 October 2008, pp59-68

Fotios S & Houser K, Measuring Lamp SPD Affect on the Perception of Interior Spaces: Frequently This is Misleading. Balkan Light 2008, Ljubljana, Slovenia, 7–9 October 2008, pp69-78

Fotios SA, White Lighting in subsidiary roads: Can it be done and should it be done? ILE Annual Conference, Bristol, 24-26 September 2008

Chang C-L & Fotios S, A study into how buildings may provide reassurance to unfamiliar users when wayfinding, Spatial Cognition 2008, 15-19 September 2008, Freiburg, Germany. pp29-32, proc. poster presentations.

Davoudian N & Fotios SA, Background Lighting Patterns and Their Impact on Conspicuity of Urban Objects at Night, Professional Lighting Design Convention: 1st Global Lighting Design Conference, 24-27 October 2007, Millennium Gloucester Hotel, London

Davoudian N & Fotios SA, Background Patterns of Light and Their Impact on the Saliency of Illuminated Objects in Urban Spaces, proc. Light Pollution & Urban Lighting, Istanbul, Turkey, 6-8 September 2007, pp31-40

Fotios SA, A Summary of Recent Road Lighting Research, 26th Session of the CIE, Beijing, 4-11 July 2007, vol. 2, pp. D4-88 – D4-91 (poster)

Fotios S & Houser K, Research of Lamp SPD Effects on the Perception of Interior Spaces: The Current State of Knowledge, 26th Session of the CIE, Beijing, 4-11 July 2007, vol. 1, pp. D1-111 – D1-114 (poster)

Fotios SA, Effects of SPD on the Appearance of Spaces and on Visual Performance, Invited Presentation, Symposium on Lighting and Human Performance, NPL Optical Radiation Measurement Club, 14th December 2006

Fotios SA & Cheal C, Investigations into the white light trade-off for lighting in subsidiary streets, ILE Annual Conference, Manchester, October 2006 (Proceedings show only powerpoint slides). (Received award for best conference paper.)

Fotios SA & Cheal C, Designing for white light in subsidiary streets, Urban Nightscape 2006, annual meeting of CIE divisions 4 & 5, Athens, 21-23 September 2006, pp. 42-44, ISBN 960-88011-1-7

Davoudian N & Fotios SA, Alternatives to brightness for achieving night-time conspicuity, Urban Nightscape 2006, annual meeting of CIE divisions 4 & 5, Athens, 21-23 September 2006, pp. 62-63 (poster), ISBN 960-88011-1-7

Fotios SA, Light Colour Specification, presentation to lead discussion, Invited Presentation, Lighting Research & Technology colloquium Light and Human Response with Respect to Lighting Application, UCL, London, 23rd February 2006

Fotios SA & Cheal C, Validating the white light illuminance trade-off permitted in pedestrian lighting, Local authority Lighting 2005, The Royal Institution of Great Britain, London, 8th December 2005, ILE/Surveyor 2005.

Fotios SA & Boyce PR, Ellis CE, The Effect of Pavement Material on Road Lighting Performance, Local authority Lighting 2005, The Royal Institution of Great Britain, London, 8th December 2005, ILE/Surveyor 2005

Fotios SA & Cheal C, The white light illuminance trade off permitted in UK design for pedestrian areas: Can it be validated?, x028:2005: Proceedings of the CIE Symposium '05 "Vision and Lighting in Mesopic Conditions", 21 May 2005, Leon, Spain, pp.50-55

Fotios SA, Boyce PR & Forster R, The Power Demand of Discharge Lamps Used in Public Lighting, proc. Local Authority Lighting 2004: Best practice = best value?, The 8th Annual Lighting Conference & Exhibition, 30th November 2004, Business Design Centre, London, Surveyor/ILE

Fotios SA & Levermore GJ, The effect of lamp colour properties upon perception: A summary of research, CIE Symposium ‘99: 75 Years of CIE Photometry, Hungary, September 1999.

Fotios SA & Levermore GJ, The perception of daylight, 154-158, Proceedings of the First international CIE symposium on Lighting Quality, 9-10 May 1998, Ottawa, Canada (1998) (poster)

Fotios SA & Levermore GJ, The perception of an artificial daylight source, CIBSE National Lighting Conference, Bath, U.K. (1996)

Fotios SA & Levermore GJ, The perception of enhanced blue light sources, CIE Symposium on Advances in Photometry, Vienna, 1-3 December 1994, Central Bureau of CIE; Vienna (1995)

Technical Reports

Lighting Guide LG5: Lighting for education. London: The Society of Light and Lighting (SLL/CIBSE); 2011. ISBN 978-1-906846-17-6. Member of task group lead by Iain Macrae

Fotios S & Cheal C, Obstacle Detection; Investigating the effects of lamp type and luminance. Final report, May 2008. Sponsored by Philips Lighting Ltd.

ILE Technical Report TR29: White Light. S Fotios (chairman), N Townsend, M Hooper, K Moss, A Scott & S Austin, 2008

Fotios, S., Boyce, P., and Ellis, C., 2005, The Effect of Road Surface Material on Road Lighting Performance, Report for the Department for Transport, 2005, contract number PPAD 9/100/77

Fotios SA, Boyce PR & Forster R, The Power Demand of Discharge Lamps Used in Public Lighting, final report submitted to the Department for Transport, October 2004. (see www.dft.gov.uk under the roads and vehicles section)

Scott J, Deveci G, Edge M & Fotios S, Life cycle cost analysis for a zero heating house for the north east of Scotland, Research report for Aberdeen city housing department, 1999