Documents disponibles écrits par cet auteur

Assessing pupil and school performance by non-parametric and parametric techniques / K. De Witte in Journal of the operational research society (JORS), Vol. 61 N° 8 (Août 2010) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 61 N° 8 (Août 2010) . - pp. 1224–1237 Titre : Assessing pupil and school performance by non-parametric and parametric techniques Type de document : texte imprimé Auteurs : K. De Witte, Auteur ; Thanassoulis, E., Auteur ; G. Simpson, Auteur Année de publication : 2011 Article en page(s) : pp. 1224–1237 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Performance  measurement  Free  disposal  hull  Multi-level  modelling  Secondary  education Index. décimale : 001.424 Résumé : This paper discusses the use of the non-parametric free disposal hull (FDH) and the parametric multi-level model (MLM) as alternative methods for measuring pupil and school attainment where hierarchical structured data are available. Using robust FDH estimates, we show how to decompose the overall inefficiency of a unit (a pupil) into a unit specific and a higher level (a school) component. By a sample of entry and exit attainments of 3017 girls in British ordinary single sex schools, we test the robustness of the non-parametric and parametric estimates. Finally, the paper uses the traditional MLM model in a best practice framework so that pupil and school efficiencies can be computed. DEWEY : 001.424 ISSN : 0361-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v61/n8/abs/jors200950a.html [article] Assessing pupil and school performance by non-parametric and parametric techniques [texte imprimé] / K. De Witte, Auteur ; Thanassoulis, E., Auteur ; G. Simpson, Auteur . - 2011 . - pp. 1224–1237. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 61 N° 8 (Août 2010) . - pp. 1224–1237 Mots-clés : Performance  measurement  Free  disposal  hull  Multi-level  modelling  Secondary  education Index. décimale : 001.424 Résumé : This paper discusses the use of the non-parametric free disposal hull (FDH) and the parametric multi-level model (MLM) as alternative methods for measuring pupil and school attainment where hierarchical structured data are available. Using robust FDH estimates, we show how to decompose the overall inefficiency of a unit (a pupil) into a unit specific and a higher level (a school) component. By a sample of entry and exit attainments of 3017 girls in British ordinary single sex schools, we test the robustness of the non-parametric and parametric estimates. Finally, the paper uses the traditional MLM model in a best practice framework so that pupil and school efficiencies can be computed. DEWEY : 001.424 ISSN : 0361-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v61/n8/abs/jors200950a.html

Costs and efficiency of higher education institutions in England / Thanassoulis, E. in Journal of the operational research society (JORS), Vol. 62 N° 7 (Juillet 2011) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 62 N° 7 (Juillet 2011) . - pp. 1282–1297 Titre : Costs and efficiency of higher education institutions in England : a DEA analysis Type de document : texte imprimé Auteurs : Thanassoulis, E., Auteur ; Kortelainen, M., Auteur ; Johnes, G., Auteur Année de publication : 2011 Article en page(s) : pp. 1282–1297 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Higher  education  Data  envelopment  analysis  Performance  measurement  Productivity  Cost  function Index. décimale : 001.424 Résumé : As student numbers in higher education in the UK have expanded during recent years, it has become increasingly important to understand its cost structure. This study applies Data Envelopment Analysis (DEA) to higher education institutions in England to assess their cost structure, efficiency and productivity. The paper complements an earlier study that used parametric methods to analyse the same panel data. Interestingly, DEA provides estimates of subject-specific unit costs that are in the same ballpark as those provided by the parametric methods. The paper then extends the previous analysis and finds that further student number increases of the order of 20–27% are feasible through exploiting operating and scale efficiency gains and also adjusting student mix. Finally the paper uses a Malmquist index approach to assess productivity change in the UK higher education. The results reveal that for a majority of institutions productivity has actually decreased during the study period. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n7/abs/jors201068a.html [article] Costs and efficiency of higher education institutions in England : a DEA analysis [texte imprimé] / Thanassoulis, E., Auteur ; Kortelainen, M., Auteur ; Johnes, G., Auteur . - 2011 . - pp. 1282–1297. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 62 N° 7 (Juillet 2011) . - pp. 1282–1297 Mots-clés : Higher  education  Data  envelopment  analysis  Performance  measurement  Productivity  Cost  function Index. décimale : 001.424 Résumé : As student numbers in higher education in the UK have expanded during recent years, it has become increasingly important to understand its cost structure. This study applies Data Envelopment Analysis (DEA) to higher education institutions in England to assess their cost structure, efficiency and productivity. The paper complements an earlier study that used parametric methods to analyse the same panel data. Interestingly, DEA provides estimates of subject-specific unit costs that are in the same ballpark as those provided by the parametric methods. The paper then extends the previous analysis and finds that further student number increases of the order of 20–27% are feasible through exploiting operating and scale efficiency gains and also adjusting student mix. Finally the paper uses a Malmquist index approach to assess productivity change in the UK higher education. The results reveal that for a majority of institutions productivity has actually decreased during the study period. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n7/abs/jors201068a.html

Productivity change in the water industry in England and Wales / M. C. A. S. Portela in Journal of the operational research society (JORS), Vol. 62 N° 12 (Décembre 2011) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 62 N° 12 (Décembre 2011) . - pp. 2173–2188 Titre : Productivity change in the water industry in England and Wales : application of the meta-Malmquist index Type de document : texte imprimé Auteurs : M. C. A. S. Portela, Auteur ; Thanassoulis, E., Auteur ; A. Horncastle, Auteur Année de publication : 2011 Article en page(s) : pp. 2173–2188 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Productivity  Malmquist  index  DEA  Water  companies Index. décimale : 001.424 Résumé : This paper uses a meta-Malmquist index for measuring productivity change of the water industry in England and Wales and compares this to the traditional Malmquist index. The meta-Malmquist index computes productivity change with reference to a meta-frontier, it is computationally simpler and it is circular. The analysis covers all 22 UK water companies in existence in 2007, using data over the period 1993–2007. We focus on operating expenditure in line with assessments in this field, which treat operating and capital expenditure as lacking substitutability. We find important improvements in productivity between 1993 and 2005, most of which were due to frontier shifts rather than catch up to the frontier by companies. After 2005, the productivity shows a declining trend. We further use the meta-Malmquist index to compare the productivities of companies at the same and at different points in time. This shows some interesting results relating to the productivity of each company relative to that of other companies over time, and also how the performance of each company relative to itself over 1993–2007 has evolved. The paper is grounded in the broad theory of methods for measuring productivity change, and more specifically on the use of circular Malmquist indices for that purpose. In this context, the contribution of the paper is methodological and applied. From the methodology perspective, the paper demonstrates the use of circular meta-Malmquist indices in a comparative context not only across companies but also within company across time. This type of within-company assessment using Malmquist indices has not been applied extensively and to the authors’ knowledge not to the UK water industry. From the application perspective, the paper throws light on the performance of UK water companies and assesses the potential impact of regulation on their performance. In this context, it updates the relevant literature using more recent data. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n12/abs/jors201117a.html [article] Productivity change in the water industry in England and Wales : application of the meta-Malmquist index [texte imprimé] / M. C. A. S. Portela, Auteur ; Thanassoulis, E., Auteur ; A. Horncastle, Auteur . - 2011 . - pp. 2173–2188. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 62 N° 12 (Décembre 2011) . - pp. 2173–2188 Mots-clés : Productivity  Malmquist  index  DEA  Water  companies Index. décimale : 001.424 Résumé : This paper uses a meta-Malmquist index for measuring productivity change of the water industry in England and Wales and compares this to the traditional Malmquist index. The meta-Malmquist index computes productivity change with reference to a meta-frontier, it is computationally simpler and it is circular. The analysis covers all 22 UK water companies in existence in 2007, using data over the period 1993–2007. We focus on operating expenditure in line with assessments in this field, which treat operating and capital expenditure as lacking substitutability. We find important improvements in productivity between 1993 and 2005, most of which were due to frontier shifts rather than catch up to the frontier by companies. After 2005, the productivity shows a declining trend. We further use the meta-Malmquist index to compare the productivities of companies at the same and at different points in time. This shows some interesting results relating to the productivity of each company relative to that of other companies over time, and also how the performance of each company relative to itself over 1993–2007 has evolved. The paper is grounded in the broad theory of methods for measuring productivity change, and more specifically on the use of circular Malmquist indices for that purpose. In this context, the contribution of the paper is methodological and applied. From the methodology perspective, the paper demonstrates the use of circular meta-Malmquist indices in a comparative context not only across companies but also within company across time. This type of within-company assessment using Malmquist indices has not been applied extensively and to the authors’ knowledge not to the UK water industry. From the application perspective, the paper throws light on the performance of UK water companies and assesses the potential impact of regulation on their performance. In this context, it updates the relevant literature using more recent data. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v62/n12/abs/jors201117a.html