When we travelled, we needed to present a return/onward flight ticket, a valid Turkish visa and a negative covid test taken at least 72 hours before our flight even though Turkey accepted a certificate of full vaccination without a PCR or antigen test. In addition, we filled out an online...
According to our test results, about 75% of the adjacent elements are the nearest neighbour elements, too. Thus the clusters must contain elements which are in the near neighbourhood of each other. The cliques generated by the QTC algorithm can provide this property Figure 5. Cost ratio in ...