Judul: Reference Group‟s Influence towards Awareness and Consumption of Brown Rice (Oryza nivara).
Abstrak: Beberapa tahun terakhir ini konsumsi nasi yang terbuat dari beras merah (Oryza nivara) dipopulerkan sebagai bagian dari gaya hidup sehat. Secara umum penelitian ini bertujuan untuk mengetahui pengaruh kelompok acuan terhadap kesadaran dan konsumsi beras merah. Desain penelitian yang digunakan adalah desain cross sectional study dan melibatkan 130 contoh yang dipilih dengan metode snowball di wilayah Bogor. Hasil penelitian mengungkapkan bahwa besar pengaruh kelompok acuan yang dirasakan konsumen dipengaruhi oleh alasan konsumsi (p<0,01). Selain itu, kelompok acuan juga memiliki hubungan yang signifikan dengan usia konsumen (p<0,05). Kesadaran memiliki hubungan nyata dengan pendidikan dan media (p<0,05), namun hanya pendidikan yang memberikan pengaruh signifikan terhadap kesadaran. Kekuatan kelompok acuan juga mempengaruhi kesadaran, yaitu saat kekuatan kelompok acuan semakin tinggi maka kesadaran akan menurun. Salah satu dugaan hal ini terjadi karena terdapat efek information overload. Konsumsi beras merah berhubungan nyata dengan pendidikan, pendapatan keluarga (SES), dan kesadaran (p<0,05), namun hanya kesadaran yang mempengaruhi konsumsi beras merah secara signifikan
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Judul: Analisis Pengetahuan, Sikap dan Pengaruhnya Terhadap Pembentukan Intensi dan Perilaku Konsumsi Beras Merah (Oryza nivara) Menggunakan Pendekatan Theory Of Planned Behaviour
Abstrak: Consumption of brown rice has a good influence for consumer health, but the knowledge and attitudes about brown rice are still lack. This led to interest in low consumption. This study aimed analyzing knowledge, attitudes and its affect toward intention and consumption behavior of brown rice (Oryza nivara) adapted from Theory Of Planned Behaviour that consists of knowledge, attitudes, subjective norms, behavioral control, intentions and consumption. This study used cross sectional study design, located at some gyms and rice shops, involved 130 peoples who had consumed brown rice at least once in the past month. The results showed that the number of family members was negatively associated with behavioral control sample (p <0.05). Age and education level was positively associated with attitudes, subjective norms, and behavior control (p <0.05). In addition family income was positively related with behavioral control. Knowledge was positively related with attitudes, subjective norms, and behavior control. So through the TPB approach, the results showed that attitudes, subjective norms, and behavioral control (p<0.01) that affect the consumption of brown rice intentions.
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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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