This article aims to answer frequently asked questions about the Covid-19 pandemic using ChatGPT and contribute to the spread of accurate information about the pandemic. The article provides general information about the ways Covid-19 is spread, symptoms, diagnosis, treatment, vaccines and pandemic management. It also provides advice on infection control, vaccination campaigns and emergency preparedness.

This study aims to make the most appropriate decision at the procurement decision stage by comparing the technical features of UAV systems currently used and those to be used in the military field. For this purpose, the technical data of UAV systems, which are suitable for military use, produced by three domestic and five foreign companies, and are in the production phase, were collected. These collected data were analysed under the following headings: [At First, three criteria (Airtime, Maximum Altitude, and Payload Capacity) and TOPSIS and Fuzzy TOPSIS analysis are implemented. Then two more criteria (Cruise Speed and Maximum Speed) were added to these three criteria. Only TOPSIS analysis was performed.] separated and sorted by TOPSIS and the Fuzzy TOPSIS Method. In line with the findings, the Yabhon United 40 and Predator C Avenger models took first place in the TOPSIS three and five criteria rankings, respectively. It was determined that the Heron TP model took first place in the ranking with fuzzy TOPSIS.

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