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This is to certify that your paper entitled «Using the Electrocardiogram Signal to Identify and Detection Heart Diseases by Combining Time and Frequency Characteristics» was indexed with 22 pages, in the CIVILICA citation database, code COI:JR_SPRE-8-2_001, after evaluation and approval of the referees of the "Signal Processing and Renewable Energy Vol 8, Issue 2 , Year 2024.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.