Judul: Analisis Pola Ketersediaan dan Konsumsi Sayur, Buah serta Kacang-kacangan Penduduk di Indonesia Tahun 2002-2011
Abstrak: This research aimed to analyze the availability and consumption pattern of vegetables, fruits and nuts in population in Indonesia 2002-2011. This research was conducted on June to December 2013. Source of the data was secondary data from National Socio-economic Survey (SUSENAS) during 2002-2011. The average of vegetables, fruits and nuts availability showed an increase during 2002-2011. However the average of vegetables and fruits consumption showed a decrease but the nuts consumption showed an increase during 2002-20111. This result showed that the vegetables consumption occurred larger in rural than the urban areas. Otherwise fruits and nuts consumption occured larger in urban than the rural areas. The vegetables and fruits sufficiency were in condition of food secured that showed by the ratio score at > 1.2 while the nuts sufficiency was in condition of food secured however fragile that showed by the ratio score at 0.8 < 1.2.
Keyword: vegetables, nuts, fruits, consumption pattern, availability pattern

Judul: Analisis Konsumsi Makanan dan Minuman jadi serta Kelompok Bumbu-bumbuan Penduduk di Indonesia Tahun 2002-2011.
Abstrak: Dietary pattern of Indonesian people has been changing every year. Some groups of prepared foods and beverages, and seasonings have become the most important part of dietary pattern changing. This study aimed to analyze the consumption pattern of prepared foods and beverages and seasonings on Indonesian people in 2002-2011. The study used secondary data from National Socio-economic survey (SUSENAS) from 2002-2011 conducted on April to September 2013. Consumption of prepared foods and beverages showed an increase during the years 2002 to 2011. Contribution of energy from prepared foods and beverages as well as seasonings of Indonesian people was 13.24 percent of Energy Recommended Dietary Allowance (RDA) (264.8 kcal/cap/day) during the years 2002-2011.Contribution of protein from prepared foods and beverages as well as seasonings of Indonesian people was 8.43 percent of Protein Recommended Dietary Allowance (RDA) (4.4 gram/cap/day) during the years 2002-2011. The projection of foods and beverages consumption as well as consumption of seasoning until 2020 will be 382.32 kcal/cap/day, 17.74 kcal/cap/day, dan 14.74 kcal/cap/day respectively.
Keyword: seasoning., ready to eat, food consumption, beverage

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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