Judul: Hubungan status gizi dan status anemia dengan daya ingat sesaat siswa di SDN Pasanggrahan 1, Desa Pasanggrahan, Kecamatan Tegal Waru, Kabupaten Purwakarta
Abstrak: Kekurangan zat gizi makro dan zat gizi mikro mempunyai dampak negatif terhadap anak perkembangan, termasuk fungsi kognitif anak. Tujuan dari penelitian ini adalah menganalisis hubungan status gizi dan status anemia terhadap pendek anak term memory di SDN Pasanggrahan 1. Studi cross sectional desain yang digunakan dalam penelitian ini. Lima puluh anak dari sekolah dasar ini adalah dipilih secara purposive sampling, namun hanya tiga puluh sembilan anak yang memenuhi syarat persyaratan. Tes memori jangka pendek yang digunakan dalam penelitian ini dilakukan dengan cara memberi beberapa kata yang harus dipelajari oleh anak dan kemudian diambil kata-katanya. Data tadi diproses oleh Microsoft Excel 2007 dan SPSS 16.0 untuk Windows. Hasil menunjukkan bahwa skor rata-rata sampel memori jangka pendek di pagi hari adalah lebih tinggi dari skor di sore hari. Status gizi mempunyai hubungan positif terhadap skor memori jangka pendek pada sore hari (p<0,1) dan pengetahuan gizi korelasi positif terhadap skor memori jangka pendek pada pagi dan sore hari (hal<0,1).
Keyword: Short term memory, School age children, Nutritional status, Anaemia status

Judul: Determinan status anemia, aktivitas fisik dan prestasi belajar siswa di SDN Pasanggrahan II Purwakarta
Abstrak: This study was aimed to examine determinant of anemia status, physical activity and academic achievement of students. This research used a cross sectional study. The number of samples were 52 elementary school student. Food consumption recall was used to measure iron source food consumption, academic achievement data was taken from exam semester and linear regression used for analysis determinants. Result showed a large number of children in normal status (51.92%) while the rest was anemia (48.08%). Nutritional knowledge of anemia student and normal student was low. Both anemia (68%) and normal student (55.6%) experience severe energy deficit, physical activity of anemia and normal students was classified as light. Academic achievement of students were very low with the score only below 60. Spearman correlation showed there was no relationship between physical activity with anemia status (p>0.05) and Pearson’s correlation showed there’s no relationship between academic score with anemia status (p>0.05). The result of regression analysis showed that poultry has negative significant effect anemia 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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