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Integrating Sustainability into Humanitarian Procurement
Published in Sachin K. Mangla, Sunil Luthra, Suresh Kumar Jakhar, Anil Kumar, Nripendra P. Rana, Sustainable Procurement in Supply Chain Operations, 2019
Mohammad Hossein Zarei, Ruth Carrasco-Gallego, Stefano Ronchi
If the ideas of individuals are believed to have different importance, group AHP makes it possible to weigh each individual’s idea. Weighting ideas and aggregating them using geometric mean is called weighted geometric mean method, which is the most common method for aggregation of preferences in the literature of AHP (Xu, 2000). It is shown that if the individual judgments are fairly consistent (based on consistency evaluation described in Section 12.3.1), the resulting group AHP using weighted geometric mean is also acceptably consistent, dismissing the need to perform another consistency check for the group AHP (Xu, 2000). Next section introduces the application of group AHP for prioritizing the barriers on the way of sustainable humanitarian procurement.
Production process optimisation of Sterculia foetida methyl esters (biodiesel) using response surface methodology
Published in International Journal of Ambient Energy, 2022
Vinod Babu Marri, Madhu Murthy Kotha, Amba Prasad Rao Gaddale
For targeting a response, di= 0 when Yi< Li & Yi> Ui and where Yi = the predicted value of ith response; Ti = the target value for ith response; Li = the lowest acceptable value for ith response; Ui = the highest acceptable value for ith response; di = the desirability for ith response; Γi = the weight of desirability function of ith response. While dealing with the problems of multiple response optimisation, all the responses are combined into a single non-dimensional performance parameter called composite desirability (D). It is defined as the weighted geometric mean of the individual desirabilities and ranges from 0 to 1. Composite desirability can be calculated using Equations (6) and (7). If the importance is the same for each response, the composite desirability is where wi = the importance of ith response and W = Σwi.