H.M. Koolma
VU University Amsterdam
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Publication
Featured researches published by H.M. Koolma.
Psychonomic Bulletin & Review | 2017
Jacob Veenstra; H.M. Koolma; Maarten Allers
The efficiency of social housing providers is a contentious issue. In the Netherlands, there is a widespread belief that housing corporations have substantial potential for efficiency improvements. A related question is whether scale influences efficiency, since recent decades have shown a trend of mergers among corporations. This paper offers a framework to assess the effects of scale and mergers on the efficiency of Dutch housing corporations by using both a data envelopment analysis and a stochastic frontier analysis, using panel data for 2001–2012. The results indicate that most housing corporations operate under diseconomies of scale, implying that merging would be undesirable in most cases. However, merging may have beneficial effects on pure technical efficiency as it forces organizations to reconsider existing practices. A data envelopment analysis indeed confirms this hypothesis, but these results cannot be replicated by a stochastic frontier analysis, meaning that the evidence for this effect is not robust.
Journal of Housing and The Built Environment | 2016
Jacob Veenstra; H.M. Koolma; M.A. dr. Allers
The efficiency of social housing providers is a contentious issue. In the Netherlands, there is a widespread belief that housing corporations have substantial potential for efficiency improvements. A related question is whether scale influences efficiency, since recent decades have shown a trend of mergers among corporations. This paper offers a framework to assess the effects of scale and mergers on the efficiency of Dutch housing corporations by using both a data envelopment analysis and a stochastic frontier analysis, using panel data for 2001–2012. The results indicate that most housing corporations operate under diseconomies of scale, implying that merging would be undesirable in most cases. However, merging may have beneficial effects on pure technical efficiency as it forces organizations to reconsider existing practices. A data envelopment analysis indeed confirms this hypothesis, but these results cannot be replicated by a stochastic frontier analysis, meaning that the evidence for this effect is not robust.
Archive | 2009
H.M. Koolma
Efficiëntie en effectiviteit van de publieke sector in de weegschaal | 2010
H.M. Koolma; D. Verlet; C. Devos
Stedebouw en Volkshuisvesting | 2015
H.M. Koolma; J. van der Schaar; Vu
Politicologen etmaal | 2013
H.M. Koolma; J.R. Hulst; A.J.G.M. van Montfort; D. Verlet; F. Bongers
Liber Amicorum Jan van der Moolen | 2013
H.M. Koolma
Archive | 2018
H.M. Koolma; John Poot; Jurgen van Vliet
Vlaams Tijdschrift voor Overheidsmanagement | 2017
H.M. Koolma
Archives of Business Research | 2017
H.M. Koolma; J.R. Hulst; A.J.G.M. van Montfort