earticle

영어

Input congestion is present when reducing some inputs causes some outputs. Suchphenomenon is likely to be present in Korean universities. But previous studies measuringthe efficiencies for Korean universities did not take the input congestion into account. Hence, this study revisited the efficiency of Korean universities with consideration ofinput congestion by employing T-S model(SBM DEA). T-S model divided the inputcongestion into strong congestion and weak congestion. This study measures the weak congestion because the definition of strong congestion istoo restrictive. Strong congestion implies weak congestion, but weak congestion does notimply strong congestion. Number of full time teaching staffs, number of non-teaching staffs, and number ofstudents are used as outputs and employment rate, domestic publication index, andinternational publication index as outputs. Inputs congestions are estimated for 39research-oriented universities in 2012. 20 universities have been diagnosed with inputcongestion and an excessive number of students is the main sources of input congestion,Based on this study, the congested inputs are required to be removed from the inputs. The outputs augmentation such as employment rate, domestic publication index, andinternational publication index could have been achieved by the reduction in number offull time teaching staffs, number of non-teaching staffs, and number of students. In addition, the above unexpected input congestion from full time teaching staffs mightbe indicative of institutional inefficiency. Further research is necessary to examine theinstitutional inefficiency.