id	keyword
alkej-816	maintenance
alkej-816	ann
alkej-816	failure
alkej-816	vol
alkej-816	system
alkej-816	data
alkej-816	time
alkej-816	algorithm
alkej-816	engineering
alkej-816	journal
alkej-816	results
alkej-816	khwarizmi
alkej-816	production
alkej-816	ahmed
alkej-816	reliability