• Energy Intensity and Long- and Short-Term Efficiency in US Manufacturing Industry 

      Badunenko, Oleg; Kumbhakar, Subal Chandra (Peer reviewed; Journal article, 2020)
      We analyze energy use efficiency of manufacturing industries in US manufacturing over five decades from 1960 to 2011. We apply a 4-component stochastic frontier model, which allows disentangling efficiency into a short- ...
    • Persistent and transient inefficiency in adult education 

      Badunenko, Oleg; Mazrekaj, Deni; Kumbhakar, Subal Chandra; De Witte, Kristof (Peer reviewed; Journal article, 2021)
      This paper evaluates the inefficiency of adult education programs. Using an advanced four-component stochastic frontier model on Belgian adult education data, we distinguish between persistent and transient inefficiency ...