The coronavirus pandemic has affected not only health but also the economy. The use of big data in finding information can be used to gain profits that logistics companies can utilize to survive during the pandemic. This study conducted text-mining research on service consultant sites in the logistics sector. This study aims to present frequency diagrams, analyze sentiment using the National Research Council (NRC) lexicon, present bigrams, and seek knowledge about strategies to minimize shipping costs and maintain inventories of manufactured goods. The words "supply", "chain", and "COVID-19" are words that are used frequently throughout the article. The results of this study showed that the words that often appear from word excavation are the words "supply", "chain", "logistics", "kpis," and "inventory". Then emotion trust becomes an emotional word that often appears in articles. The words "Supply" and "pandemic" are the words that seem the most positive and negative words, respectively. The words "COVID-19", "safety stock", and "inventory management" are words that often appear together. The result of discovery knowledge is that logistics consultants offer emotions of trust and provide many insights on minimizing shipping costs and maintaining inventory during a pandemic.

In today's business competition, educational institutions or courses require optimizing profits. However, this is not easy because, in its implementation, there are many priority objective functions that must be fulfilled. In this case, the course institution has different class programs, namely literacy, numeracy, and math olympiad programs, with various operational costs per program type and course fees per program type. This problem requires setting priorities because of the limited number of revenues, operating costs, and profit targets. In this paper, the researcher uses Winter's Exponential Smoothing forecasting model to determine the number of students, operating costs, and profits in the following year. Then the researcher analyzes the planning with the goal programming method to minimize the deviation of the multi-objective programming. This research shows that the number of student admissions who can meet market demand for January 2021 decreased by 5.41%, in February decreased by 3.20%, in March decreased by 1.29%, April remained constant, in May increased by 1.44%, June increased by 2.16%, July increased 2.82%, August increased 2.78%, September increased 3.47%, October increased 3.22%, November an increase of 3.33%, and for December an increase of 2.69%. The total operational cost that does not exceed the target limit is Rp. 30,475,0000 for one year. The total profit has reached the target to be achieved, which is Rp. 322,150,000 for one year.

Beberapa tahun belakang Corona Virus Desease 2019 menjadi isu paling mengganggu psikologi masyarakat Indonesia sejak pertama kali masuk ke Indonesia pada awal 2020. Setelah mulai mereda pada 2022 ini, kini hadir isu baru yaitu Hepatitis Misterius yang menjadi momok menakutkan bagi orang tua. Karena hepatitis misterius ini banyak menyerang anak-anak hingga menyebabkan meninggal dunia. Media sosial adalah sumber Big Data. Media seperti Twitter telah digunakan untuk mengumpulkan dan menganalisis data pengguna untuk beberapa tujuan yang berbeda. Data dapat digunakan untuk menganalisis pendapat orang terhadap topik dan insiden tertentu dengan menerapkan analisis sentiment. Informasi yang berguna tertentu dapat diambil dari data yang dianalisis. Hasi penelitian ini memberikan  informasi yang dapat disimpulkan bahwa hepatitis misterius ini merupakan jenis hepatitis akut, penyebab belum diketahui, menyerang anak-anak, hingga menyebabkan meninggal dunia, dan lokasi kasus menunjukkan di DKI Jakarta. Pengguna twitter memberi ragam emosi mengenai isu #HepatitisMisterius banyak memberikan emosi negatif lalu diikuti, emosi positif, antisipasi, takut, kesedihan, dan percaya, dan senang. Dari hasil penelitian ini menginformasikan saran untuk berhati-hati dengan hepatitis misterius ini, karena terdapat saran waspada hepatitis dan jaga kesehatan.

No abstract