Judul: Sikap Konsumen terhadap Pembelian Daging Sapi di Pasar Tradisional Kabupaten Bogor
Abstrak: Konsumsi daging sapi di Kabupaten Bogor mengalami peningkatan setiap tahunnya. Pasar tradisional menjadi pilihan pertama konsumen dalam memeroleh daging sapi karena harga yang murah dan dekat dengan tempat tinggal. Namun, peningkatan ini diiringi oleh pertumbuhan jumlah pasar tradisional yang rendah. Disisi lain, kondisi tersebut tidak mengurangi minat konsumen untuk membeli daging sapi di pasar tradisional. Tujuan penelitian ini adalah menganalisis proses pengambilan keputusan konsumen dan sikap konsumen terhadap atribut daging sapi di pasar tradisional Kabupaten Bogor. Hasil penelitian menemukan bahwa proses keputusan pembelian daging sapi dimulai dari pengenalan kebutuhan, pencarian informasi, evaluasi alternatif, pembelian, dan yang terakhir perilaku pasca pembelian. Sikap konsumen terhadap kesembilan atribut daging sapi yang diteliti adalah positif dengan urutan atribut yang dipertimbangkan saat membeli daging sapi di pasar tradisional dimulai dari harga, warna, aroma, kandungan lemak, tekstur, bentuk promosi, warna lemak, golongan potongan, dan yang terakhir adalah atribut kandungan air., Beef consumption in Bogor Regency increases every year. Traditional markets are the first choice of consumers for obtaining beef due to their low prices and proximity. However, the number of traditional markets is experiencing low growth despite this increase. On the other hand, this condition does not reduce consumer interest in buying beef in traditional markets. The purpose of this study was to analyze the consumer decision-making process and consumer attitudes towards beef attributes in traditional markets in Bogor Regency. The results found that the beef purchase decision process starts with need recognition, information search, alternative evaluation, purchase, and finally post-purchase behavior. Consumer attitudes towards the nine beef attributes studied are positive, with the order of attributes considered when buying beef in traditional markets starting from price, color, aroma, fat content, texture, promotional form, fat color, cut class, and the last being the water content attribute.
Keyword: Beef, consumer attitude, fishbein

Judul: Analysis Of Consumer Preferences And Purchasing Decision For Beef In Bintaro Modern Market
Abstrak: Kota Tangerang Selatan memiliki tingkat konsumsi daging sapi yang besar, hal tersebut bermakna bahwa Tangerang Selatan memiliki peluang besar dibidang perdagangan. Namun hal tersebut tidak sejalan dengan pertumbuhan pedagang khususnya pada Pasar Modern Bintaro mengalami penurunan pedagang yang signifikan dari 430 pedagang pada tahun 2020 menjadi hanya 189 pedagang pada tahun 2021. Pada Penelitian ini akan dikaji mengenai (1) Menganalisis proses keputusan pembelian daging sapi di Pasar Modern Bintaro; (2) Mengidentifikasi sikap dan preferensi konsumen terhadap daging sapi di Pasar Modern Bintaro. Jenis data yang digunakan adalah Kualitatif dan Kuantitatif yang didapat dari sumber data primer (penyebaran menggunakan kuesioner dan media sosial) dan sekunder (studi literatur). Metode penelitian menggunakan analisis deskriptif dan analisis multiatribut. Hasil Penelitian menemukan bahwa persepsi konsumen dalam proses keputusan pembelian terdiri atas lima tahapan, yaitu tahap pengenalan kebutuhan, pencarian informasi, evaluasi alternatif, proses pembelian, dan perilaku pasca pembelian. Responden lebih menyukai kinerja atribut daging sapi di Bintaro Jaya yang dipersepsikan baik oleh konsumen adalah atribut lemak, aroma, tekstur, dan potongan daging, South Tangerang City has a large level of beef consumption, this means that South Tangerang has great opportunities in the trade sector. However, this is not in line with the growth of traders, especially in the Bintaro Jaya modern market, which has experienced a significant decrease in traders from 430 traders in 2020 to only 189 traders in 2021. This research will review (1) Analyzing the decision process of buying beef in the Bintaro modern market; (2) represents consumer attitudes and perceptions of beef in the Bintaro modern market. The type of data used is Qualitative and Quantitative obtained from primary data sources using questionnaires and social media and literature studies. The research method uses descriptive analysis and multiatribut analysis. The results of the study found that consumer perceptions in the purchasing decision process consisted of five stages, namely the stages of need recognition, information search, evaluation of alternatives, the buying process, and post-purchase behavior. Respondents who preferred the performance of the attributes of beef in Bintaro Jaya that were well perceived by consumers were the attributes of cutlets, grease, scents, and texture
Keyword: beef, purchasing decisions, consumer preference, daging sapi, keputusan pembelian, preferensi konsumen

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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