Judul: Analisis Pengaruh Brand Equity Terhadap Keputusan Pembelian Energen Sereal di Bogor
Abstrak: Sereal dan susu merupakan menu sarapan yang banyak menjadi pilihan saat ini. Ada beberapa pilihan produk sereal dan susu yang ditawarkan, salah satunya adalah minuman sereal merek Energen. Produk ini banyak dikenal oleh masyarakat karena kesuksesan ekuitas merek Energen di pasar domestik. Tujuan penelitian adalah menganalisis pengaruh hubungan antara ekuitas merek terhadap keputusan pembelian Energen sereal. Metode penentuan sampel menggunakan purposive sampling yang melibatkan 145 orang responden. Pengolahan data menggunakan analisis Structural Equation Modeling (SEM) dengan software SMART PLS versi 3.2.1. Hasil analisis menunjukkan bahwa brand awareness berpengaruh langsung terhadap current purchase dan berpengaruh tidak langsung terhadap future purchase Energen sereal. Brand image berpengaruh langsung terhadap current purchase dan berpengaruh tidak langsung terhadap future purchase Energen sereal. Current purchase berpengaruh langsung terhadap future purchase Energen sereal, sedangkan perceived quality tidak berpengaruh terhadap keputusan pembelian.
Keyword: brand equity, current purchase, Energen, future purchase, SEM, cereal

Judul: Pengaruh Ekuitas Merek terhadap Keputusan Pembelian Konsumen Susu Segar Greenfields
Abstrak: Perkembangan industri susu di Indonesia sejalan dengan kebutuhan susu yang terus meningkat. Greenfields merupakan salah satu merek yang belum lama berada di industri dan berhasil menjadi market leader susu segar di Indonesia, namun belum dapat berada pada Top Brand Award. Penelitian bertujuan untuk mengidentifikasi karakteristik konsumen dan menganalisis pengaruh ekuitas merek terhadap keputusan pembelian konsumen susu segar Greenfields. Penelitian dilakukan di Jakarta. Jumlah sampel penelitian sebanyak 125 responden yang dianalisis menggunakan analisis deskriptif dan Structural Equation Modeling-Partial Least Square (SEM-PLS). Hasil penelitian menunjukkan karakteristik konsumen susu segar Greenfields mayoritas perempuan berusia 18–25 tahun, domisili di Jakarta Selatan, dengan pendidikan terakhir SMA/Sederajat. Konsumen mayoritas karyawan swasta berpenghasilan Rp5.000.001-Rp7.000.000 dan pengeluaran untuk konsumsi berkisar Rp500.000–Rp1.000.000 tiap bulan, dengan frekuensi konsumsi susu segar 1–5 kali tiap bulan. Analisis SEM-PLS menunjukkan ekuitas merek berpengaruh positif signifikan terhadap keputusan pembelian. Berdasarkan hasil, Greenfields dapat memperluas target pasar ke segmen anak-anak dan melakukan promosi lebih intensif., The development dairy industry Indonesia is in line with the increasing demand for milk. Greenfields is a brand that has succeeded in becoming market leader for fresh milk in Indonesia, but not yet able to be in the Top Brand Award. The research aims to identify consumer characteristics and analyze the influence of brand equity on consumer purchasing decisions for Greenfields fresh milk. The research was conducted in Jakarta. The total research sample was 125 respondents, who were analyzed using descriptive analysis and Structural Equation Modeling-Partial Least Square (SEM-PLS). The results show characteristics consumers are mostly women aged 18–25 years, domiciled in South Jakarta, with a high school education. Majority of consumers are private employees with incomes from IDR 5,000,001-IDR 7,000,000 and expenditures on consumption from IDR 500,000-IDR 1,000,000 per month, with a frequency consuming fresh milk 1–5 times per month. SEM-PLS analysis shows that brand equity have a positive significant effect on purchasing decisions. Based on the results, Greenfields can expand its target market to children segmentation and carry out more intensive promotions.
Keyword: Ekuitas Merek, Loyalitas Merek, Pemimpin Pasar, 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.
Keyword: