Judul: Perilaku Konsumsi Suplemen pada Anak Prasekolah di Kota  Bogor.
Abstrak: The objective of this research was to analyzed nutrient supplement consumption behavior among Preschool Children in Bogor. This study was part of a research entitled Nutrition Aspect, Food, Health, and Lifestyle of Kindergarten Children in Bogor. The research design was a cross sectional study. The research was divided into two steps. The first step was primary study (weight measured) which was started from August to September 2005. The second step was collected data by using questionnaire in October 2005. Data were collected through mail questionnaires to the parents, 401 questionnaires were distributed to six Kindergardens, 229 questionnaires were returned in, only 195 questionnaires were completely answered. Rank Spearman test indicated nutrition status was positively correlated with intake of supplement and frequency of consumption.
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Judul: Keragaan Status Gizi, Aktivitas Fisik, Konsumsi Pangan Serta Tingkat Kecukupan Energi Dan Zat Gizi Anak Sekolah Dasar Di Kota Bogor
Abstrak: The objective of this research was to understand nutritional status, physical activity, food consumption and sufficiency energy and nutrient level of elementary school children in Bogor. The research was conducted by using cross sectional study and simple random sampling design from April to July 2009 in 4 elementary School in Bogor that 2 private school (SDIT Aliya and SD Pertiwi) and 2 public school (SDN Baranang Siang and SD Kedung Badak 1). The samples of this research were all of fifth grade students from four elementary school students in Bogor. The result showed that nutritional status obesity and overweight sample in private school higher than sample in public school. Physical activity level (PAL) of sample in private school category sedentary and sample in public school category active. Energy expenditure of sample in public school was higher than private school. Sample in private school has higher energy, protein, vitamin A, vitamin C, calcium, iron and phosphor consumption than sample in public school. Adequacy level of energy, protein, vitamin A, vitamin C, calcium and phosphor of private school sample were also higher than public school, except for iron. Pearson Correlation Test shows that physical activity has significant correlation with the nutritional status.
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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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