Judul: Consumer Patterns and Perceptions of Purchase Decisions and Consumer Loyalty in Milk Products in Jabodetabek
Abstrak: Produk minuman susu sudah banyak beredar di masyarakat dengan berbagai variasi, sehingga perlu memahami konsumen serta faktor yang mempengaruhi minat konsumen dalam melakukan pembelian, melalui atribut produknya. Penelitian ini bertujuan mengetahui pola konsumsi, persepsi konsumen dan loyalitas konsumen masyarakat terhadap produk minuman susu di wilayah Jabodetabek. Penelitian dilakukan dengan survei online yang terdiri dari tahapan yaitu studi literatur, penentuan metode pengambilan data, penentuan responden, penyusunan kuesioner, pengujian kuesioner, pengumpulan data, pengolahan data, dan pelaporan. Analisis data dilakukan dengan uji deskriptif, crosstab, Chi-square, dan uji Net Promoter Score dengan menggunakan software Microsoft Excel dan SPSS 25. Responden memiliki pola konsumsi tertinggi dengan frekuensi konsumsi sebanyak 1-2 kali seminggu pada jenis susu UHT berkemasan tetra pak pada brand Ultramilk. Pertimbangan keputusan pembelian dilihat dari faktor rasa, sertifikasi, dan kandungan gizi dengan memperhatikan kandungan protein, mineral, gula, vitamin, dan lemak. Beberapa dari profil responden seperti domisili, usia, jenis kelamin, pendidikan, pekerjaan, pendapat, dan pengeluaran memiliki hubungan yang signifikan terhadap beberapa atribut pola dan persepsi konsumen. Terdapat 5 dari 16 brand yang memiliki konsumen puas dan loyal karena memiliki Net Promoter Score yang bernilai positif., Milk products have circulated a lot in public with various variations, so it is necessary to understand consumers and the factors that influence consumer interest in making purchases, through product attributes. This study aims to determine consumption patterns, consumer perceptions and consumer loyalty to milk products in the Jabodetabek. The research was conducted using an online survey consisting of stages: literature study, determining data collection methods, determining respondents, preparing questionnaires, testing questionnaires, data collection, data processing, and reporting. Data analysis was carried out by descriptive, crosstab, Chi-square, and Net Promoter Score tests using Microsoft Excel and SPSS 25 software. Respondents had the highest consumption pattern with a consumption frequency of 1-2 times a week on UHT milk in tetra pak packaging for Ultramilk brands. Consideration of purchasing decisions is seen from the taste, certification, and nutritional content by paying attention to the content of protein, minerals, sugar, vitamins, and fat. Some of the respondents profiles such as domicile, age, gender, education, occupation, income, and expenditure have a significant relationship to some attributes of consumer patterns and perceptions. There are 5 out of 16 brands that have satisfied and loyal consumers because they have a positive Net Promoter Score.
Keyword: Consumer, Loyalty, Milk, Pattern, Perspective

Judul: Purchasing Behaviour Pattern and Determinants that Affect Brand Equity of Packaged Milk "Ultra Milk" in Jabodetabek
Abstrak: Ultra Milk menjadi merek yang mampu bertahan peringkat satu dalam kategori susu kemasan bermerek. Penelitian ini bertujuan untuk mengetahui bagaimana pola perilaku pembelian konsumen Ultra Milk dan determinan apa saja yang dapat memengaruhi ekuitas merek. Penelitian berlokasi di Jabodetabek dengan metode non-probability sampling dan teknik yang digunakan purposive sampling. Data yang digunakan yaitu data primer dengan kuesioner online. Metode analisis yang digunakan adalah analisis deskriptif, tabulasi silang, dan SEM-PLS. Hasil penelitian menunjukkan bahwa pola perilaku pembelian konsumen Ultra Milk, diantaranya konsumen melakukan pembelian tanpa direncanakan, cenderung melakukan pembelian di Minimarket (Alfamart, Indomaret, dan sebagainya), ukuran kemasan yang dibeli 250 sampai 300 mL, membeli susu tiga sampai lima kali setiap bulannya, membeli satu sampai dua buah dalam satu kali pembelian, mengonsumsi Ultra Milk dua sampai tiga kali dalam seminggu, serta pengeluaran konsumen dalam pembelian Ultra Milk kurang dari Rp 50.000 setiap bulannya. Dimensi merek yang berpengaruh signifikan terhadap ekuitas merek Ultra Milk yaitu kesadaran merek, asosiasi merek, persepsi kualitas, dan loyalitas merek. Loyalitas merek memiliki pengaruh paling besar terhadap ekuitas merek. Hal ini dikarenakan konsumen loyal dan setia dalam pembelian Ultra Milk. Berdasarkan hasil ini, Ultra Milk dapat berinovasi mengembangkan variasi rasa, promosi konsisten dan menarik, serta manajemen merek yang efektif., Ultra Milk is a brand that is able to stay at number one in the branded packaged milk category. This study aims to determine how Ultra Milk consumers' purchasing behaviour patterns and what determinants can affect brand equity. The research was located in Jabodetabek with a non-probability sampling method and purposive sampling technique used. The data used is primary data with an online questionnaire. The analysis methods used are descriptive analysis, cross tabulation, and SEM-PLS. The results showed that Ultra Milk consumers' purchasing behaviour patterns, including consumers making unplanned purchases, tend to make purchases at Minimarkets (Alfamart, Indomaret, etc.), the packaging size purchased is 250 to 300 mL, buying milk three to five times per month, buying one to two pieces in one purchase, consuming Ultra Milk two to three times a week, and consumer spending in purchasing Ultra Milk is less than IDR 50,000 per month. Brand dimensions that have a significant effect on Ultra Milk brand equity are brand awareness, brand association, perceived quality, and brand loyalty. Brand loyalty has the greatest influence on brand equity. This is because consumers are loyal and faithful in purchasing Ultra Milk. Based on these results, Ultra Milk can innovate to develop flavour variations, consistent and attractive promotions, and effective brand management.
Keyword: Ekuitas Merek, Kesadaran Merek, Loyalitas Merek, SEM-PLS, Asosiasi Merek, Persepsi Kualitas

Judul: Penyusunan Overlap Graph menggunakan Suffix Tree pada DNA Sequence
Abstrak: The DNA sequence assembly is very important in genome analysis. This step aims to reconstruct contigous DNA fragment (contigs) from short fragment by concatenating fragments based on the overlap region among them. This method employs overlap graph for solving the problems. In this graph, nodes represent fragments and edges represent overlap. This research developed a software for constructing overlap graph using suffix tree. The evaluation was conducted by measuring the number of nodes, number of edges, and the execution time in many values of minimum overlap. The minimum overlap is defined as the minimum length of substring which is considered as the overlap region between two fragments. The evaluation results showed that the number of nodes, the number of edges, and the execution time were increased with the decreasing of the minimum overlap value.
Keyword: