Judul: "Business Model Canvas (BMC) Base on Consumer Value Perceptions and Preferences for Frozen Food - Packaged Meatballs in Bandung City Markets"
Abstrak: Frozen food products have spread widely on the market, either in the form of food ingredients (frozen harvest) or food that has been pre-processed (then frozen). Frozen food is the choice of many people who don't have much free time to cook food. There are already many businesses around frozen food in Indonesia, both in production, distribution and retail sales. One type of frozen food is packaged meatballs. Packaged meatballs are a type of food that is quite popular in Indonesia. There is still a big opportunity to run a frozen food business in Indonesia because the Indonesian population is very high and increases every year. The impact of the Covid-19 pandemic has also affected people's lifestyles, from BPS data it is recorded that the highest online sales were in food and beverages which rose sharply by 1070% from sales in January 2020. The products most purchased during the pandemic were 55 percent of foods such as frozen food. or ready to cook (ready to cook). Currently, competition between manufacturers is increasingly competitive, as indicated by the increasing number of companies offering similar products. To win the competition, companies need to know consumer value perceptions, preferences and behavior in purchasing decisions as a basis for determining marketing strategies. Consumer value perceptions, preferences and behavior need to be analyzed, because they cannot be controlled directly by the company. Information on consumer behavior is obtained from research results. This research on frozen food - packaged meatballs was obtained from a market survey by collecting questionnaire data from 100 respondents (housewives, students and workers) by filling out questionnaires which were distributed offline in traditional markets in the city of Bandung and then analyzed using descriptive and statistically analyzing them. The research results show that perceived value has a significant effect on the decision to buy packaged meatballs, while preference does not have a significant effect on the buying decision. By using BMC, there are managerial implications that CV continues to carry out, improve and change. Semar who want semar meatballs to have attributes or characteristics that are tastier, tastier, cheaper, higher quality and better. Higher quality attributes and characteristics are related to the basic ingredients, ingredients, texture and ease of obtaining the product. Cheaper characteristics relate to the price of the product. Better characteristics relate to product quality dimensions. In this case, most manufacturers provide various types of products based on the quality of the products offered to be accepted by consumers, Produk makanan beku sudah banyak menyebar di pasar baik dalam bentuk bahan makanan (hasil panen dibekukan) atau makanan yang sudah diolah terlebih dahulu (kemudian dibekukan). Frozen food atau makanan beku menjadi pilihan banyak orang yang tidak punya waktu luang yang banyak untuk memasak makanan. Sudah banyak bisnis seputar frozen food di Indonesia baik itu dalam produksi, distribusi, maupun penjualan eceran. Salah satu macam dari frozen food adalah bakso kemasan. Bakso kemasan merupakan jenis makanan yang cukup populer di Indonesia. Peluang untuk berbisnis makanan beku masih berpeluang besar di Indonesia karena tingkat populasi penduduk Indonesia yang sangat tinggi dan setiap tahunnya bertambah. Dampak pandemi
Keyword: descriptive analysis, New Model, Analisa Deskriptif, Keputusan Membeli, Persepsi Nilai, Merek Semar, Bakso Kemasan, BMC, New Model, Purchasing decisions, Preferences, Perceived Value, meatballs, Frozen Food, BMC, Preferensi, Frozen Food, Brand Semar

Judul: Pengaruh Persepsi Label Halal terhadap Keputusan Pembelian Produk Makanan Beku oleh Konsumen Muslim Kabupaten Bogor
Abstrak: Perilaku konsumsi pangan masyarakat Indonesia yang berubah menjadi makanan beku mengakibatkan terjadinya peningkatan konsumsi makanan beku sebanyak 17 persen di tahun 2020. Sejak pandemi, makanan beku menjadi pilihan konsumsi paling populer bagi 55 persen masyarakat Indonesia sehingga penjualannya di tahun 2021 mencapai 2,02 miliar USD. Menurut LPPOM MUI, makanan beku memiliki titik kritis kehalalan sehingga berpotensi menjadi makanan haram kemudian masih terdapat produk makanan beku yang beredar di masyarakat belum memiliki sertifikat halal. Penelitian ini bertujuan untuk mengidentifikasi karakteristik dan persepsi konsumen muslim mengenai keberadaan label halal dalam produk makanan beku serta menganalisis faktor-faktor yang memengaruhi keputusan pembelian terhadap produk makanan beku oleh konsumen muslim Kabupaten Bogor. Penelitian ini dilakukan di Kabupaten Bogor dengan mengambil sampel sebanyak 100 responden. Metode yang digunakan dalam penelitian ini yaitu analisis deskriptif dan analisis Structural Equation Modeling-Partial Least Square (SEM-PLS). Hasil penelitian menunjukkan bahwa harga, pendapatan, gaya hidup, dan kelompok acuan berpengaruh secara positif dan signifikan terhadap keputusan pembelian produk makanan beku., Consumer behavior changes have resulted in increased consumption of frozen food to 17 percent in 2020. Since pandemic, frozen food became the most popular consumption choice by 55 percent of the society with sales in 2021 reaching 2.02 billion USD. Based on LPPOM MUI, frozen food has critical points of halalness that can potentially become haram food and there are frozen foods in the public distribution without halal certificates. The research aims to identify the characteristics and perceptions of Muslim consumers regarding the existence of halal labels of frozen food products and analyze the factors that influence purchasing decisions for frozen food products by Muslim consumers in Bogor Regency. The research was conducted in Bogor Regency using sample of 100 respondents. The methods used are descriptive analysis and Structural Equation Modeling-Partial Least Square (SEM-PLS) analysis. The results of the research indicate that price, income, lifestyle, and reference groups have a positive and significant effect on purchasing decisions for frozen food products.
Keyword: frozen food, halal label, purchase decision, SEM-PLS

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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