BACKGROUND Heat stress as a physical harmful agent can increase the risk of health and safety problems in different workplaces such as mining. Although there are different indices to assess the heat stress imposed on workers, choosing the best index for a specific workplace is so important. Since various criteria affect an index applicability, extracting the most effective ones and determining ...

Article history: Received 17 January 2011 Received in revised form 3 June 2011 Accepted 6 June 2011 Available online 8 July 2011 We investigate the relative impact of internal Delphi process factors – including panelists' degree of confidence, expertise, majority/minority positioning – and an external factor, richness of feedback – on opinion change and subsequent accuracy of judgmental forecas...

Supply chain responsiveness creates value for firms and their stakeholders is a key towards generating above-normal profits firms. Consequently, there has been surge of research on it, which expanded due to the pressures be responsive during pandemic COVID19. Responsiveness an attribute wherein supply chains are equipped respond resolutely within suitable timeframe consumer requirements. The tr...

Article history: Received 30 October 2010 Received in revised form 22 February 2011 Accepted 3 March 2011 Available online 31 March 2011 For meaningful scenarios, creative input concerning possible future trends is crucial. Herman Kahn, the father of modern scenario planning, underlined the importance of “thinking the unthinkable” in a significant scenario study. “Blessed with high intelligence...

The Delphi technique is a means of facilitating discussion among experts in order to develop consensus, and can be used for policy formulation. This article describes a modified Delphi approach in which 27 multi-disciplinary academics and 22 stakeholders from Ghana and North America were polled about ways to address negative effects of small-scale gold mining (ASGM) in Ghana. In early 2014, the...

This paper considers a probabilistic inventory model with uniform leadtime demand and fuzzy cost components under probabilistic and imprecise constraints. Firstly we solve the model by general fuzzy non-linear programming technique. Then intuitionistic fuzzy optimization technique is applied and finally, regarding the optimization of the objective function a comparative study is presented among...