Judul: Preferensi Pangan Anak Sekolah Dasar Di Kota Bogor
Abstrak: Food preference has an important role in defining children’s food pattern. Food preference that is formed earlier will persist to influence food preference in adult. In the other words, children’s food preference is a critical point in defining adult’s food preference. Thus, study about children’s food preference and many factors that were related is important to do. The general objective of this study was to identified factors that is correlate to food preference of school children in bogor city, and the specific objectivess were to: 1). Identified individual characteristic of subject, 2). Identified Family’s socio economics condition of subject, 3). Identified school children’s food preference, and 4). Analyze correlation between food preference and many factors. This study used cross-sectional design and the subject was 90 students from 3 elementary school in Bogor City. The correlation between factors and food preferences analized use inferensia statistics which are: Chi Square and Rank Spearman. Food preference of school children shows that school children tend to like certain kind of food in each food groups. There are several kinds of food in each foods group which is less like by school children. Fruits are liked by most school children. Most of school children like a kind of food because of the organoleptic characteristic of food, especially taste. Individual characteristics and family’s socio economic conditions explained little of the variation in school children’s food preference. The statistic test shows that preference of certain food has correlation with individual and family’s socio economic conditions. School children’s food preference doesn’t not show variety yet. Interventions are needed to direct school children’s food preference become more various.
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Judul: Pola Asuh Makan Ibu serta Preferensi dan Konsumsi Sayur dan Buah Anak Usia Sekolah di Bogor.
Abstrak: Tujuan umum penelitian adalah mempelajari kaitan pola asuh makan ibu dengan preferensi dan konsumsi sayur dan buah anak usia sekolah. Desain penelitian adalah cross-sectional dengan teknik penarikan sampel secara purposive sebanyak 108 sampel anak usia sekolah di SDN Cibanteng 1 Kabupaten Bogor dan SDN Papandayan Kota Bogor. Pengukuran preferensi menggunakan skala hedonik dan konsumsi menggunakan semi-quantitative food frequency questionnaire. Konsumsi sayur anak di kota (68.5±31.6 g/hari) lebih tinggi dibandingkan di kabupaten (45.4±18.7 g/hari). Konsumsi buah anak di kota (166.5±67.7 g/hari) lebih tinggi dibandingkan di kabupaten (106.9±43.0 g/hari). Terdapat hubungan signifikan negatif (p<0.050) antara peran ibu dalam pemberian makan dengan konsumsi buah anak. Terdapat hubungan signifikan positif antara tingkat kesukaan 8 jenis sayur (wortel, tauge, jagung muda, jamur, daun singkong, ketimun, kacang panjang, dan caisim) dan 3 jenis buah (manggis, pir, dan jambu air) dengan konsumsinya (p<0.050).
Keyword: konsumsi, pola asuh makan, preferensi pangan, sayur dan buah

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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