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Determinants of allocative and technical inefficiency in stochastic frontier models : an analysis of Norwegian electricity distribution firms

Musau, Andrew; Kumbhakar, Subal; Mydland, Ørjan; Lien, … - In: European journal of operational research : EJOR 288 (2021) 3, pp. 983-991

Persistent link: https://www.econbiz.de/10012387446

A Monte Carlo study of old and new frontier methods for efficiency measurement

Krüger, Jens - In: European journal of operational research : EJOR 222 (2012) 1, pp. 137-148

Persistent link: https://www.econbiz.de/10009569551

Do external technology acquisitions matter for innovative efficiency and productivity?

Gantumur, Tseveen; Stephan, Andreas - 2010

To quickly adapt to technological change and developments, and thus remain competitive, firms increasingly resort to the use of external technology. This paper investigates whether and to what extent the acquisition of external disembodied technology affects the efficiency and productivity in...

Persistent link: https://www.econbiz.de/10009260253

When, where and how to estimate persistent and transient efficiency in stochastic frontier panel data models

Badunkenko, Oleg; Kumbhakar, Subal - In: European journal of operational research : EJOR 255 (2016) 1, pp. 272-287

Persistent link: https://www.econbiz.de/10011530868

Productivity and efficiency estimation : a semiparametric stochastic cost frontier approach

Sun, Kai; Kumbhakar, Subal; Tveterås, Ragnar - In: European journal of operational research : EJOR 245 (2015) 1, pp. 194-202

Persistent link: https://www.econbiz.de/10011290698

Stochastic frontier models with time-varying conditional variances

Tsionas, Efthymios G.; Kumbhakar, Subal - In: European journal of operational research : EJOR 292 (2021) 3, pp. 1115-1132

Persistent link: https://www.econbiz.de/10012502428

Economies of scale, technical change and persistent and time-varying cost efficiency in Indian banking : do ownership, regulation and heterogeneity matter?

Badunenko, Oleg; Kumbhakar, Subal - In: European journal of operational research : EJOR 260 (2017) 2, pp. 789-803

Persistent link: https://www.econbiz.de/10011699186

Panel data stochastic frontier model with determinants of persistent and transient inefficiency

Lai, Hung-pin; Kumbhakar, Subal - In: European journal of operational research : EJOR 271 (2018) 2, pp. 746-755

Persistent link: https://www.econbiz.de/10011890405

The GMM estimation of semiparametric spatial stochastic frontier models

Hou, Zhezhi; Zhao, Shunan; Kumbhakar, Subal - In: European journal of operational research : EJOR 305 (2023) 3, pp. 1450-1464

Persistent link: https://www.econbiz.de/10013499048

On distinguishing the direct causal effect of an intervention from its efficiency-enhancing effects

Badunenko, Oleg; D'Inverno, Giovanna; De Witte, Kristof - In: European journal of operational research : EJOR 310 (2023) 1, pp. 432-447

Persistent link: https://www.econbiz.de/10014340187