The Indonesian men's badminton team won the 2020 Thomas Cup after defeating China in the final. The final match of the Thomas Cup 2020 between Indonesia and China took place at Ceres Arena, Aarhus, Denmark. As a result, Indonesia won 3-0 over China. On social media twitter, Indonesia's success in the Thomas Cup 2020 event has become one of the most discussed topics due to the large number of supports and opinions from various circles of society. Some opinions from the public on Twitter will be used as sentiment analysis public opinion to reSearch data regarding Indonesia's success in the 2020 Thomas Cup. This reSearch uses the Naïve Bayes and K-NN methods which are expected to have a good level of accuracy. According to several studies, the Naïve Bayes method has an accuracy rate of 95.161%, while the Decision Tree method has an accuracy rate of 84.677%.

The number of positive examples of Coronavirus continues to grow every day, especially in Indonesia. In an effort to reduce the surge in the higher case, the government carried out vaccination programs provided free for all Indonesian people. One vaccine given to Masyara-kat is the Astra Zeneca vaccine. In the provision of these vaccines bring benefits and losses in the community, some are supported and doubtful, some even refuse. On social media Twitter, Astra Zeneca is one of the most widely discussed in social media because of the many opinions or opinions that have sprung up from various circles. Some opinions from the community on Twitter will be used as data to examine the analysis of sentiment in the Astra Zeneca vaccine that utilizes the Naïve Bayes and K-NN methods. It is expected to produce an accurate level of accuracy. Based on the results of the study found different levels of accuracy, for the use of the Naïve Bayes method produced an accuracy rate of 90.71% +/- 4.66% (Micro Average: 90.77%) while the KNN method produced an accuracy rate of 74.78% +/- 3.74% (micro Average: 74.77%).

To be able to understand which products have been purchased by customers, it is done by describing the habits when customers buy. Use association rules to detect items purchased at the same time. This study uses an a priori algorithm to determine the association rules when buying goods. The results of the study and analyzing the data obtained a statement that using the a priori algorithm to select the combined itemset using a minimum support of 25% and a minimum confidence of 100%, found the association rule, namely, if the customer buys at the same time. Buying goods has the highest value of support and trust. Likewise with the support value of 25%, the confidence value is 100%. In this way, if a customer buys an item, the probability that the customer buys the item is 100%

Penelitian ini bertujuan untuk mendeskripsikan struktur modal dalam keuangan syariah. Struktur modal perusahaan merupakan bagian dari struktur keuangan perusahaan yang mengulas tentang cara perusahaan mendanai aktivanya struktur modal mengarah pada pendanaan perusahaan yang menggunakan utang jangka panjang, saham preferen ataupun modal pemegang saham. Jenis penelitian ini adalah library research. Hasil penelitian ini adalah teori struktur modal berupa teori Teori Miller dan Modigliani (MM) Propositions, teori packing order dan teori signaling.

Isoeugenyl acetate is an eugenol derivative product in the form of white crystalline powder, it smells like vanilla, and has a spicy, hot and slightly sweet taste. Isoeugenyl acetate used in various industries, such as pharmaceuticals, cosmetics, food and beverages, cigarettes, pesticides, fishery, mining, packaging and other chemical industries. However, there is a problem in the product specification that is unacceptable to the consumer that is the acid number is high,  it;s make of smell of acids in the product. Standart product of isoeugenyl acetate has an acid number of 0.5 mgKOH/g. The research method used to decrease the acid number in isoeugenyl acetate is washing process. The aim of of this research are to obtain temperature, stirring time and the concentration of sodium bicarbonate. The condition of washing process of isoeugenyl acetate were obtained at temperature 35oC, stirring time 100 minutes, and concentration sodium bicarbonate 3,5%. In these conditions acid number of 0.4594 mgKOH/g and  the drying time of the isoeugenyl acetate product of 7 hours. Keywords: Isoeugenyl acetate, sodium bicarbonate, Acid number