|
Inclusion criteria (IC)
|
IC 1
|
Articles containing one of the keywords in either title, abstract, or keywords.
|
This study conducted a search with five keywords concatenated with OR operator (see string combination above)
|
|
IC 2
|
Documents written in the English language
|
Only articles written in the English language were considered in this study.
|
|
IC 3
|
All date of publication
|
We did not specify date range since it is of interest to discover the trend of the field and when discussion among scholars began.
|
|
IC 4
|
Articles in journals, conferences, and book chapters
|
The search is focused on documents published in journals, conferences, book chapters only
|
|
Exclusion criteria (EC)
|
EC 1
|
Articles with publication stage “in press.”
|
Only final articles that have been successfully published were considered in this study.
|
|
EC 2
|
Articles whose source is a trade journal
|
This study considered articles from trade journals irrelevant since they do not go through the peer-review process. Trade journals are articles written majorly to educate, inform, or promote certain trade or industry. They are either published online or in newspapers and magazines.
|
