Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 23, Pages 29394-29411Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-021-12595-5
Keywords
Green Lean Six Sigma (GLS) project; Data envelopment analysis (DEA); Technology readiness level (TRL); Adaptive neuro-fuzzy inference system (ANFIS)
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In the current business environment, organizations are constrained by budget and schedule, leading them to choose six sigma projects based on predefined success criteria. Utilizing an innovative approach such as Green Lean Six Sigma (GLS) is crucial for companies to enhance their social and environmental performance. This study reviewed past research, identified indicators and evaluation criteria for GLS projects, and successfully predicted selected projects using the ANFIS method. The findings emphasized the importance of Technology Readiness Level (TRL) in the performance of GLS projects.
Nowadays budget and schedule constraints have forced organizations to select six sigma projects based on pre-defined success criteria. Also, progressive approaches based on green and lean paradigm are vital for companies to enhance their social and environmental performance. Then, Green Lean Six Sigma (GLS) projects play the main role in improving the performance of an organization while augmenting its sustainability. Accordingly in this paper, past studies were reviewed, and GLS projects' indicators and performance evaluation criteria were identified. Data envelopment analysis (DEA) was employed for the appropriate selection of GLS projects. Next, the ranking and performance weight of each project were investigated, and also the projects were categorized based on the technology readiness level (TRL). Additionally, an adaptive neuro-fuzzy inference system (ANFIS) method was applied for the successful prediction of selected GLS projects. Twenty-eight inputs and 9 outputs for the first project category (with TRL 9) and 28 inputs and 6 outputs for the second project category (with TRL 8) were entered into the model. The statistical assessment measures such as Nash-Sutcliffe efficiency (NSE), root mean squared of error (RMSE), mean absolute error (MAE), and R-2 were employed for capability appraisal of ANFIS model. Results of NSE and R-2 indicators for both project categories were 1.00 that proved the efficiency of the ANFIS model for success prediction of GLS projects. Also, RMSE and MAE indicators for category 1 were 0.01 and 0.02 respectively. Similarly, these measures for category 2 were 0.02 and 0.02. The results advocate a proper approximation for observed values by the ANFIS model. Also, the results indicated that TRL as an important enabler of the GLS project has a meaningful role in the performance of GLS projects.
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