Table 1 Study methodological path Stages... | Emerald Publishing

Table 1

Study methodological path

Stages	Phase	Steps	Details
Stage I: Review planning	1	Review proposal	Meta-analysis of previous studies that discuss CE and I4.0
Stage I: Review planning	2	Review protocol development	The applied protocol has followed the parameters below Search Strings: “circular economy” OR “circular economy*” AND “Artificial intelligence” OR “Industry 4.0” OR “digital Technologies” OR “smart factory” OR “Deep learning” OR “Machine learning” OR “Artificial Neural Networks” OR “Natural Language Processing” OR “Expert systems” OR “Fuzzy” OR “convolutional neural network” OR “advanced manufacturing”. Search strings that sought to include the studied themes Consulted databases: Scopus and Web of Science Criterion for including studies: business, management and accounting-related publications Studies should be available in complete form
Stage II: Review conduction	3	Studies selection	Data plotting into as Excel spreadsheet, with specific columns to arrange data of interest for this study, like title, author, year, journal, general objective of the study, study type, research limitations and recommendations to future studies
Stage II: Review conduction	4	Data synthesis	Information was synthetized in graphics, tables, and charts, to enable answering the research question
Stage III: Results presentation	5	Data analysis	Mapping of current status of previous studies on CE and I4.0, looking for new research paths based on research objectives, limitations as well as recommendations for future studies
Stage III: Results presentation	6	Discussion and conclusions	Reflection on key findings. Based on the evidence, we have built propositions for new studies, unprecedented and original. Conclusions were laid out aiming at highlighting practical and theoretical contributions of this study

Stages	Phase	Steps	Details
Stage I: Review planning	1	Review proposal	Meta-analysis of previous studies that discuss CE and I4.0
Stage I: Review planning	2	Review protocol development	The applied protocol has followed the parameters below Search Strings: “circular economy” OR “circular economy*” AND “Artificial intelligence” OR “Industry 4.0” OR “digital Technologies” OR “smart factory” OR “Deep learning” OR “Machine learning” OR “Artificial Neural Networks” OR “Natural Language Processing” OR “Expert systems” OR “Fuzzy” OR “convolutional neural network” OR “advanced manufacturing”. Search strings that sought to include the studied themes Consulted databases: Scopus and Web of Science Criterion for including studies: business, management and accounting-related publications Studies should be available in complete form
Stage II: Review conduction	3	Studies selection	Data plotting into as Excel spreadsheet, with specific columns to arrange data of interest for this study, like title, author, year, journal, general objective of the study, study type, research limitations and recommendations to future studies
Stage II: Review conduction	4	Data synthesis	Information was synthetized in graphics, tables, and charts, to enable answering the research question
Stage III: Results presentation	5	Data analysis	Mapping of current status of previous studies on CE and I4.0, looking for new research paths based on research objectives, limitations as well as recommendations for future studies
Stage III: Results presentation	6	Discussion and conclusions	Reflection on key findings. Based on the evidence, we have built propositions for new studies, unprecedented and original. Conclusions were laid out aiming at highlighting practical and theoretical contributions of this study