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The use of visual angle in car following traffic micro-simulation models
Presentation / Conference
Al-Obaedi, J., & Yousif, S. The use of visual angle in car following traffic micro-simulation models. Presented at International Built & Human Environment Research Week (IRW)., Salford, Greater Manchester

This paper presents a detailed literature review on car following models and methods used in describing the behaviour between two drivers of successive vehicles travelling in a traffic stream. The paper then concentrates on presenting a proposed car... Read More about The use of visual angle in car following traffic micro-simulation models.

Managing disaster risks through quality infrastructure and vice versa : post-disaster infrastructure reconstruction practices
Journal Article
Palliyaguru, R., & Amaratunga, R. Managing disaster risks through quality infrastructure and vice versa : post-disaster infrastructure reconstruction practices. Structural survey, 26(5), 426-434. https://doi.org/10.1108/02630800810922766

Purpose – Reality suggests that the whole world is currently facing an unprecedented scale of natural disasters. Sri Lanka fell into this category after being one of the hardest hit countries of tsunami 2004. Irrespective of the major losses that tsu... Read More about Managing disaster risks through quality infrastructure and vice versa : post-disaster infrastructure reconstruction practices.

Urban vegetation and the drivers for change: a case study of Runcorn, UK
Presentation / Conference
Wallbank, N., & James, P. Urban vegetation and the drivers for change: a case study of Runcorn, UK. Presented at COBRA 2010, Paris

Incorporating green areas into urban environments can aid sustainability and enhance the quality of life for those living and working in urban areas. The objective of this research is to examine the relationship between vegetation and its role within... Read More about Urban vegetation and the drivers for change: a case study of Runcorn, UK.

Local landscape character assessment: an evaluation of community-led schemes in Cheshire
Journal Article
James, P., & Gittins, J. Local landscape character assessment: an evaluation of community-led schemes in Cheshire. Landscape Research, 32(4), 423-442. https://doi.org/10.1080/01426390701449794

Planning, especially with the increasing prominence given to community involvement, is a key vehicle for delivering sustainable development. Between 2003 and 2005 two community groups in Cheshire wrote parish landscape character assessments. The comp... Read More about Local landscape character assessment: an evaluation of community-led schemes in Cheshire.

Urban green spaces in the mid 21st century scenarios and trajectories for the future cityscapes – case study of a North European city
Presentation / Conference
European city. Presented at Urban Green Spaces - A Key for sustainable cities, Sofia, Bulgaria

Urbanization is the dominant land use change across the world. Population growth, climate change and technological change are identifi ed as three factors that have paramount importance in the historic, contemporary and future development of urban... Read More about Urban green spaces in the mid 21st century scenarios and trajectories for the future cityscapes – case study of a North European city.

SODAR measurements of wing vortex strength and position
Journal Article
Bradley, S., Mursch-Radlgruber, E., & von Hünerbein, S. SODAR measurements of wing vortex strength and position. Journal of Atmospheric and Oceanic Technology, 24(2), 141-155. https://doi.org/10.1175/JTECH2037.1

A method is developed for robust real-time visualisation of aircraft vortex spatial and temporal development based on measurement data from a line array of SODARs. The method relies on using a potential-flow vortex model, with spatial averaging accor... Read More about SODAR measurements of wing vortex strength and position.

A systematic algorithm for obtaining SODAR wind profiles
Journal Article
Bradley, S., & von Hünerbein, S. A systematic algorithm for obtaining SODAR wind profiles. Meteorology and Atmospheric Physics, 85(1-3), 77-84. https://doi.org/10.1007/s00703-003-0035-x

Current methods of obtaining wind profiles from SODARs generally employ ad hoc strategies for Doppler spectrum peak selection, profile smoothing, and consistency checks. This paper addresses the problem of systematically obtaining vertical profiles o... Read More about A systematic algorithm for obtaining SODAR wind profiles.

Atmospheric acoustic interferometer tomography of temperature and winds
Presentation / Conference
Bradley, S., von Hünerbein, S., & Haddad, A. Atmospheric acoustic interferometer tomography of temperature and winds. Presented at International Workshop on Tomography and Acoustics, Leipzig, Germany

A technique is described for multiple-path propagation time measurements in the surface layer of the atmosphere. This is based on solving simple bi-directional ray tracing equations on successively higher penetrating paths using propagation times for... Read More about Atmospheric acoustic interferometer tomography of temperature and winds.

The economic theory of production conceals opportunities for sustainability improvement
Presentation / Conference
Koskela, L., & Tommelein, I. The economic theory of production conceals opportunities for sustainability improvement. Presented at 17th Annual Conference of the International Group for Lean Construction, National Pingtung University of Science and Technology, LCI-Taiwan and LCI-Asia, The Grand Hotel, Taipei, Taiwan

In analyses of action options regarding sustainability, the economic theory of production is often used as a conceptual starting point. We contend that this theory is deficient, even counterproductive. Especially, we argue that effective options exis... Read More about The economic theory of production conceals opportunities for sustainability improvement.

Analysis framework for the interaction between lean construction and building information modelling
Presentation / Conference
Sacks, R., Dave, B., Koskela, L., & Owen, R. Analysis framework for the interaction between lean construction and building information modelling. Presented at 17th Annual Conference of the International Group for Lean Construction, National Pingtung University of Science and Technology, LCI-Taiwan and LCI-Asia, The Grand Hotel, Taipei, Taiwan

Building with Building Information Modelling (BIM) changes design and production processes. But can BIM be used to support process changes designed according to lean production and lean construction principles? To begin to answer this question we pro... Read More about Analysis framework for the interaction between lean construction and building information modelling.

Last planner system : experiences from pilot implementation in the Middle East
Presentation / Conference
Alsehaimi, A., Tzortzopoulos, P., & Koskela, L. Last planner system : experiences from pilot implementation in the Middle East. Presented at 17th Annual Conference of the International Group for Lean Construction, National Pingtung University of Science and Technology, LCI-Taiwan and LCI-Asia, The Grand Hotel, Taipei, Taiwan

The work described in this paper is devoted to evaluate the effectiveness of implementing Last Planner to improve construction planning practice in Saudi construction industry. Firstly, the primary results of implementing Last Planner System (LPS) in... Read More about Last planner system : experiences from pilot implementation in the Middle East.

Urban pond: A landscape of multiple meanings
Presentation / Conference
Gledhill, D., James, P., & Davies, D. Urban pond: A landscape of multiple meanings. Presented at 5th International Postgraduate Research Conference in The Built and Human Environment, University of Salford

Ponds have a range of ecological, social and aesthetic values. However, little work has been done to appraise the values assigned to ponds located in an urban setting. During 2004, 10 ponds were studied in urban areas of Merseyside. Standard ecolo... Read More about Urban pond: A landscape of multiple meanings.

Reforming project management: the role of lean construction
Presentation / Conference
Howell, G., & Koskela, L. Reforming project management: the role of lean construction. Presented at 8th Annual Conference of the International Group for Lean Construction, Brighton, UK

Project management as taught by professional societies and applied in current practice must be reformed because it is inadequate today and its performance will continue to decline as projects become more uncertain, complex and pressed for speed. Proj... Read More about Reforming project management: the role of lean construction.

The prevalent theory of construction is a hindrance for innovation
Presentation / Conference
Koskela, L., & Vrijhoef, R. The prevalent theory of construction is a hindrance for innovation. Presented at 8th Annual Conference of the International Group for Lean Construction, Brighton, UK

It is argued that construction innovation is significantly hindered by the prevalent theory of construction, which is implicit and deficient. There are three main mechanisms through which this hindrance is being caused. Firstly, because production t... Read More about The prevalent theory of construction is a hindrance for innovation.

Motor current signal analysis using a modified bispectrum for machine fault diagnosis
Presentation / Conference
Gu, F., Shao, Y., Hu, N., Fazenda, B., & Ball, A. Motor current signal analysis using a modified bispectrum for machine fault diagnosis. Presented at ICROS-SICE International Joint Conference 2009, Fukuoka, Japan

This paper presents the use of the induction motor current to identify and quantify common faults within a two-stage reciprocating compressor. The theoretical basis is studied to understand current signal characteristics when the motor undertakes a v... Read More about Motor current signal analysis using a modified bispectrum for machine fault diagnosis.

Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition
Presentation / Conference
Guan, L., Gu, F., Shao, Y., Fazenda, B., & Ball, A. Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition. Presented at ICROS-SICE International Joint Conference 2009, Fukuoka, Japan

In this paper, a new method is proposed by combining ensemble empirical mode decomposition (EEMD) with order tracking techniques to analyse the vibration signals from a two stage helical gearbox. The method improves EEMD results in that... Read More about Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition.