Data Envelopment Analysis (DEA) is one of the best methods for measuring the efficiency and productivity of Decision Making Units (DMU). Evaluating the efficiency of DMUs which have two or several stages by using the conventional DEA models, is equal to consider them as black box. This method, omits the effect of intermediate measure on efficiency. Therefore, just the first network inputs and t...

Data envelopment analysis (DEA) is an axiomatic, mathematical programming approach to productive efficiency analysis and performance measurement. This paper shows that DEA can be interpreted as a nonparametric least squares regression subject to shape constraints on production frontier and sign constraints on residuals. Thus, DEA can be seen as a nonparametric counter-part of the corrected ordi...

based on the importance of drops' behavior in liquid-liquid extraction, the maximum sauter mean drop diameter has been investigated and correlated in a counter-current spray extraction column with two chemical systems. spargers were set of nozzles in all experiments. studying the effects of several parameters on drops size, some correlations were estimated by the last available version of softw...

introduction: health information systems have the potential of improving the quality of healthcare and treatment procedures and supporting the physicians in their clinical diagnoses. nowadays, evaluating the usability is widely accepted as a crucial factor in the acceptance and success of the interactive healthcare systems. the present study aimed to evaluate the usability of ulite software bas...

Determined cyber adversaries often strategize their attacks by carefully selecting high-value target machines that host insecure (e.g., unpatched) legacy software. In this paper, we propose a moving-target approach to thwart and countersurveil such adversaries, wherein live (non-decoy) enterprise software services are automatically modified deceptively emulate vulnerable versions entice attacke...

background and aim: auditory processing disorders may have detrimental consequences on a child’s life, if undiagnosed and untreated. the multiple auditory processing assessment (mapa), as a valid model, has been introduced for central auditory processing assessment and diagnosis in school children. the purpose of this study was to design and evaluate the persian version of mapa for auditory pro...

Data envelopment analysis (DEA), originally developed to study production efficiency ofmicro-level organizations, has recently been used to adopt a production-frontier approach to the analysis of international macroeconomic growth and convergence patterns. DEA methods, however, are known to provide biased estimates of the production frontier and efficiency. We employ recent results from the sta...