IGLC.net
EXPORT DATE: 19 June 2026

@CONFERENCE{John2026,
author={John, Paul Christian and Sun, Bernard and Engebø, Atle and Lædre, Ola and Haghsheno, Shervin and Drevland, Frode },
editor={Hamzeh, Farook and Poshdar, Mani and Garcia-Lopez,, Nelly P. },
title={33 years of Lean Construction research: academia-industry links and global contributions}, 
journal={Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)}, 
booktitle={Proceedings of the 34th Annual Conference of the International Group for Lean Construction (IGLC 34)}, 
year={2026},
pages={1028-1039},
url={http://www.iglc.net/papers/details/2472},
doi={10.24928/2026/0156},
affiliation={ PhD Student, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, christian.john@kit.edu,  orcid.org/0009-0005-0648-9331 ; Student, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, bernard.sun@student.kit.edu,  www.orcid.org/0009-0003-8624-7927  ; Researcher, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,  atle.engebo@ntnu.no, orcid.org/0000-0002-5293-0176  ; Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, ola.laedre@ntnu.no,  orcid.org/0000-0003-4604-8299  ; Professor, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany, shervin.haghsheno@kit.edu,  orcid.org/0000-0002-0602-6370  ; Associate Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,  frode.drevland@ntnu.no, orcid.org/0000-0002-4596-1564 },
abstract={This paper presents a quantitative analysis of institutional and geographical participation in Lean Construction (LC) research as reflected in the International Group for Lean Construction (IGLC) proceedings over a 33-year period (1993–2025). Based on a dataset of all 2,413 conference papers, the study examines (i) the affiliation composition of papers (academia-only, mixed, industry-only), (ii) the most contributing organisations and countries, and (iii) patterns of (inter)national co-authorship. Results show that 65% of papers are authored exclusively by academia-affiliated authors, 27% are co-authored by academia and industry, and 9% are authored exclusively by industry. Country participation broadens over time, reaching contributions from 58 countries by 2025, while publication activity remains concentrated in a relatively small set of organisations and countries. At the continental level, Europe accounts for the largest share of contributions, followed by North America and South America. International co-authorship has also increased over time: internationally co-authored papers account for 21% of the full period and exceed 20% in most years since 2015, peaking at 37% (2021). Overall, the study provides a descriptive baseline of the institutional and national contexts from which LC research at IGLC primarily originates and of how cross-domain and cross-country collaboration is reflected in the conference. },
author_keywords={Research, collaboration, practitioners, organisations, countries. },
address={Singapore, Singapore },
issn={2789-0015 },
publisher={ },
language={English},
document_type={Conference Paper},
source={IGLC},
}