E. L. Rhodes's research while affiliated with University at Buffalo, The State University of New York and other places
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Publications (5)
A model for measuring the efficiency of Decision Making Units (=DMU's) is presented, along with related methods of implementation and interpretation. The term DMU is intended to emphasize an orientation toward managed entities in the public and/or not-for-profit sectors. The proposed approach is applicable to the multiple outputs and designated inp...
A nonlinear (nonconvex) programming model provides a new definition of efficiency for use in evaluating activities of not-for-profit entities participating in public programs. A scalar measure of the efficiency of each participating unit is thereby provided, along with methods for objectively determining weights by reference to the observational da...
A nonlinear (nonconvex) programming model provides a new definition of efficiency for use in evaluating activities of not-for-profit entities participating in public programs. A scalar measure of the efficiency of each participating unit is thereby provided, along with methods for objectively determining weights by reference to the observational da...
Citations
... Na DEA, são consideradas como variáveis os insumos (inputs) e os produtos (outputs) de unidades produtivas (propriedades leiteiras, neste estudo), conhecidas como Decision Making Units (DMU) ou Unidades Tomadoras de Decisão (Charnes et al., 1978;Schull et al., 2014). A DEA compara DMU's com características semelhantes, definindo um escore que varia de 0 a 1 para as propriedades menos eficientes (<1,000) em relação às eficientes (=1,000) (Alonso et al., 2021). ...
... Since the emergence of the CCR model in 1978 [1], many models have been developed in order to evaluate decision-making units (DMUs). These models often assign an efficiency value to the DMUs and thus provide a ranking for them. ...
... Permanent changes to the higher education system in Poland were also conducive to undertaking research, mainly using the DEA method (Brzezicki, 2020). The article by Charnes et al. (1978), in which they presented its first CCR model (from the authors' names), based on radial efficiency and constant return to scale (CRS). The second BCC model with variable returns to scale (VRS) was presented by Banker et al. (1984). ...
... It is generally divided into absolute and relative efficiency. Absolute efficiency, often used to indicate productivity, is the ratio of output to input of economic actors [31,32]. Conversely, relative efficiency is a comparative measure expressed as a ratio, where the best value among the comparison targets serves as the standard for comparison. ...
... Choosing the optimal mix of freight charter contracts for a fleet of vessels may also be viewed as a shipping firm's capability to charter its inputs (total assets and capital expenditures) generating revenue as output based on the resource-based view (RBV) theory. This chartering capability of a decision-making unit (DMU), i.e. a shipping firm, to convert its inputs into outputs is widely measured using the mathematical programming method Data Envelopment Analysis (DEA) as introduced by Charnes et al. (1978). In untabulated results, we also consider controlling for shipping firms' efficiency as obtained from the DEA method. ...
