This research aims to analyze the performance of various CPU scheduling algorithms in increasing the responsiveness of the Android operating system. Using algorithms such as First Come First Served (FCFS), Shortest Job First (SJF), Shortest Remaining Time First (SRTF), and Round Robin, this study evaluates the advantages and disadvantages of each in terms of average waiting time, throughput, and power consumption. Research methods include literature study, algorithm selection and implementation, as well as data testing and analysis. The research results show that choosing the right scheduling algorithm can increase system efficiency and responsiveness, as well as provide recommendations for Android operating system developers and the application developer community. It is hoped that these findings will help in determining the optimal solution for improving the performance of the Android operating system.

The high demand of food and beverage products make competitors so tight; consequently, companies are encouraged to be more creative in creating a brand association in the minds of consumers. By using celebrity endorsers in promotional activities, the company can form a brand image of its products. The purpose of this study was to determine the extent of the influence of celebrity endorser on brand image in tea product advertisements around Dramaga-Bogor. Data collection used purposive sampling techniques and questionnaire for 100 respondents. The study was tested using a linear regression analysis method through partial t-test by using SPSS 15.0. The results showed that the public perception around Dramaga Bogor District towards celebrity endorser in advertisement was very good, therefore it has a positive effect on brand image of the tea product.