Owing to the uncertainty and vagueness of practical decision-making problems, it is more convenient for decision-makers (DMs) express evaluation information with fuzzy preference relations (FPRs) than precise numerical values. As two important issues in process FPRs, improving consistency acquiring priority weights are worth further studying. In this paper, we first provide an approach construc...

Abstract As the world population grows, aquaculture sector faces challenges in use of production systems to ensure adequacy food supply. Technical efficiency analysis has been shown be useful for improving resource management and production. This study provides a literature update uses meta‐regression examine variations mean technical (MTE) scores based on 101 studies published from 1998 2023. ...

An emerging trend in performance evaluation is combining social network analysis methods with data envelopment (DEA) models and using centrality to distinguish DEA results. One study employed an input-oriented variable-returns-to-scale model address referent decision-making units the corresponding lambda values construct a network. This referenced literature improved on use of weight sets We co...

This paper discusses returns to scale (RTS) in data envelopment analysis (DEA) for each of the presently available types of models. The BCC and CCR models are treated in input oriented forms while the multiplicative model is treated in output oriented form. (This distinction is not pertinent for the additive model which simultaneously maximizes outputs and minimizes inputs in the sense of a vec...

This paper adopts two mathematical approaches, data envelopment analysis (DEA) and grey relation analysis (GRA) to measure DEA efficiency using the sample of 69 listed US internet companies. A total of 40 indicators were initially selected for the efficiency evaluation, with 21 related to DEA-input indicators and 19 to DEAoutput indicators. Eight representative indicators selected using GRA are...

In this paper, grey system theory and DEA are combined to establish a grey DEA model. In traditional DEA model, Input and output values of decision-making groups are all real numbers and real variables. They are replaced by grey numbers and grey variables in grey DEA model respectively. Using positioning solution method of grey linear programming, we prove the necessary condition for grey effec...

The spectroscopic and electrochemical properties of a series of four RuII polypyridyl complexes are reported. Compounds of the form [Ru(dmb)x(dea)3-x] (x ) 0-3), where dmb is 4,4′-dimethyl-2,2′-bipyridine and dea is 4,4′-bis(diethylamino)-2,2′-bipyridine, have been prepared and studied using static and time-resolved electronic and vibrational spectroscopies as a prelude to femtosecond spectrosc...

An algorithm stral:egy is proposed for use with the assurance region (AR) approach in data envelopment analysis (DEA). The strategy addressed in this study characterizes and cla.5sifies all decision making units (DMUs) into several subsets, using the revised simplex method of linear programming. Then, each DMU subset is solved by a different algorithm. Experimental studies consisting of randoml...