a characteristic of data envelopment analysis (dea) is to allow individual decision making units (dmus) to select the factor weights that are the most advantages for them in calculating their efficiency scores. this flexibility in selecting the weights, on the other hand, deters the comparison among dmus on a common base. for dealing with this difficulty and assessing all the dmus on the same s...

the stock evaluation process plays an important role in portfolio selection because it is the prerequisite for investment and directly influences on the stock allocation. this paper presents a methodology based on data envelopment analysis for portfolio selection, decision making units which can be stocks or other financial assets. first, dmus efficiencies are computed based on input/output com...

Keywords: Data envelopment analysis (DEA) Common weights analysis (CWA) Ranking The ideal line The special line a b s t r a c t Conventional data envelopment analysis (DEA) assists decision makers in distinguishing between efficient and inefficient decision making units (DMUs) in a homogeneous group. However, DEA does not provide more information about the efficient DMUs. In this research, the ...

In a previous study[1], the feasibility of controlling entities in the Onesaf Test Bed simulation using a command and control hierarchy represented as teams of agents was demonstrated. The scenario used for the demonstration was the preparatory phase for a company attack on a platoon and it highlighted a number of issues requiring further research. The most important of these was the issue of b...

The design of new human machine systems, and the analysis of current human machine systems pose interesting dilemmas for the human factors specialist. Cognitive Work Analysis (CWA), (Vicente, 1999; Rasmussen, Pejtersen, & Goodstein, 1994) is an analytical framework for modeling both work environments and safe, flexible strategies workers can use to act upon this environment. CWA has proven to b...

In models of data envelopment analysis (DEA), an optimal set of weights is generally assumed to represent the assessed decision making unit(DMU) in the best light in comparison to all the other DMUs, and so there is an optimal set of weights corresponding to each DMU. The present paper, proposes a three stage method to determine one common set of weights for decision making units. Then, we use ...

Chemical warfare agent (CWA) simulants as well as their degradation and hydrolysis products were detected from surfaces using thermal desorption ion mobility spectrometry (TD-IMS). CWA simulant materials that closely mimic the chemical structures of real CWA G/V-type nerve and S-type vesicant simulants were used in this study. Reduced mobility constants (K0) in air were reported for 20 compound...

This paper presents an initial conceptualisation of an approach to integrated sociotechnical system design based on cognitive work analysis (CWA). A convincing argument has already been made that the design of complex sociotechnical systems should be driven fundamentally by the goal of promoting adaptation and that a formative approach to work analysis, such as that offered by CWA, is necessary...

We present a technique for team design based on cognitive work analysis (CWA). We first develop a rationale for this technique by discussing the limitations of conventional approaches for team design in light of the special characteristics of first-of-a-kind, complex systems. We then introduce the CWA-based technique for team design and provide a case study of how we used this technique to desi...