Analisis Dislikes to Viewers Ratio YouTube pada 5 Klub Sepakbola Terkaya di Dunia

YouTube is a social media application that allows users to view, send and share videos. Based on data compiled by We Are Social, it has been recorded that 88% of Indonesians have used the social media Youtube. This means that out of 150 million social media users in Indonesia, around 132 million people already use YouTube. The large number of active YouTube users around the world can certainly provide an opportunity for famous football clubs to make the YouTube platform a social media marketing platform. The 5 richest football clubs in the world that use YouTube as a marketing platform are: Barcelona, Real Madrid, Bayern Munich, Manchester United and Liverpool. The purpose of this study is to calculate the credibility of the YouTube channel's performance of the 5 Richest Football Clubs in the World. The method used for this research is quantitative exploratory method. The results of this study indicate that the Bayern Munich football club is ranked first and has good channel performance credibility.

Attenuation and Dispersion on Terahertz Wireless Channels in Falling Rain

Investigations on wireless channel performance in adverse weathers could be helpful and important for the future applications of terahertz communication technique in outdoor scenarios. However, in most cases only amplitude performance has been studied by using a broadband-pulsed terahertz source or an amplitude modulated data stream, not including phase degradation (temporal dispersion). This limitation may mask important aspects of channel performance with phase modulation schemes, especially for wide bandwidth signals. In this work, we report the amplitude and phase characterizations of a terahertz channel in falling rain by a time-domain spectrometer system. We also demonstrate error rate performance by a 16 quadrature amplitude modulated (16-QAM) terahertz signal at a data rate of 5 gigabits per second. We observe that, besides strong water vapor absorption, the weak water absorption line could also lead to obvious dispersion effects. Our work highlights the importance of new frequency band boundaries for minimum temporal dispersion and optimized digital communications in the terahertz frequency range.