Judul: Konsumsi Pangan dan Gizi serta Skor Pola Pangan Harapan (PPH) pada Anak Usia Sekolah 7-12 tahun di Indonesia
Abstrak: This study aimed to assess food consumption, nutrient intake, Nutritional Dietary Quality (NDQ), Desirable Dietary Pattern (DDP) score, and correlation between DDP score and NDQ in school-age children 7-12 years old. The study was conducted by analyzing food consumption data of Basic Health Research (Riskesdas) 2010 collected through a 24-hour recall method. Samples obtained were 11202 boys and 10838 girls. The results showed that most samples consume cereals (99.5%) and least consume oily seeds (1.9%). Most school-age children (more than 50%) were deficit of energy, fat, carbohydrate, water, vitamin A, vitamin B1, vitamin B9, vitamin C, calcium, phosphor, and zinc. The mean of DDP score was 64.8±14.7 (64.1±14.8 for boys and 65.5±14.7 for girls). The mean of NDQ was 55.4±15.6 (55±15.7 for boys and 55.9±15.5 for girls). Statistical test results showed middle strong correlation between DDP score and NDQ (r = 0.56- 0.59). Risk factor of nutritional dietary quality were age group, DDP score, economics state, and region.
Keyword: schoolage children, desirable dietary pattern, nutrient intake, food consumption

Judul: Konsumsi Pangan dan Gizi serta Skor Pola Pangan Harapan (PPH) pada Anak Usia 2 – 6 Tahun di Indonesia
Abstrak: This study aimed to assess food and nutrients intake, NDQ, DDP score, and the correlation between DDP score and NDQ of children aged 2-6 years. This study was carried out through analyzing a consumption data set of basic health research (Riskesdas) 2010 were collected using 24-hr recall method. Total number of children aged 2-6 years of these data was 24447 from 33 provinces of Indonesian. After applying inclusive and exclusice criterias the final subjects for this study were 16709 children. The results showed that children were most likely eat cereals (99.4%) and least likely eat oily seeds (1.6%). Children aged 2-6 years had deficiency of macronutrient energy, fats,and water. They also had deficiency of micronutrient calcium, vitamin A, vitamin B9 and vitamin C. The mean DDP score of the children aged 2-6 years was 67.1±10 (67.0±10.1 for boys and 67.3±10.1 for girls). The mean NDQ of the children aged 2-6 years was 62.4 ± 17.1 (62.6 ± 17.2 for boys and 62.2 ± 17.1 for girls). Correlation between DDP score and each of NDQ was found 0.578-0.621 that showed moderate validity result.
Keyword: FFood consumption, desirable dietary pattern, nutritional dietary quality, children aged 2-6 years

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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