Judul: Pengetahuan Gizi, Aktivitas Fisik, Konsumsi Snack Dan Pangan Lainnya, Pada Murid Sd Bina Insani Bogor Yang Berstatus Gizi Normal Dan Gemuk
Abstrak: Childhood obesity is increases rapidly in developing country. It’s has important short-term and long-term medical consequences also psychosocial consequences. The objective of the research is to analyze nutritional knowledge, physical activity, snack habit, in normal and overweight of Bina Insani elementary students at Bogor. The cross sectional design was used in this study to elaborate nutritional knowledge, snack habit, and physical activity in normal and overweight students. The total number of 80 students sample was chosen randomly. It consists of 40 students sample with normal nutritional status and 40 students sample with overweight nutritional status. Primary data consisted of physical activity recall (1x24 hours), food consumption recall (2x24 hours), anthropometry data (weight and height), social-economy’s sample condition, food habit, and snack habit using Food Frequency Questionnaire (FFQ). Secondary data were included data of Bina Insani Elementary School. The result showed no relation between level education and wage of parent, nutritional knowledge level, nutritional attitude, snack habit and physical activity with nutritional status of sample. The average energy adequacy level according to WNPG (2004) respectively 82,2% in normal sample and 73,6% in overweight sample.
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Judul: Asupan Energi, Zat Gizi, Serat dan Aktivitas Fisik Siswa Sekolah Dasar dengan Status Gizi Gemuk dan Normal di Bogor
Abstrak: Prevalensi anak sekolah yang kelebihan berat badan dan obesitas di Indonesia semakin meningkat. Angka nasional tahun 2010 menunjukkan prevalensi kelebihan berat badan sebesar 9,2%, sedangkan di perkotaan Bogor anak sekolah kelebihan berat badan dan obesitas sebesar 22,3%. Penelitian ini menggunakan desain studi cross sectional yang dilakukan di tiga sekolah dasar pada bulan September dan November 2011. Penelitian ini menggunakan teknik kuesioner dan wawancara. Tidak terdapat perbedaan yang signifikan (p>0,05) karakteristik keluarga antara sampel normal dan obesitas. Uji Independent Sample T-test menunjukkan tidak terdapat perbedaan bermakna (p>0,05) asupan energi, lemak, karbohidrat, dan serat antara sampel normal dan obesitas. Namun terdapat perbedaan yang signifikan (p<0,05) pada asupan protein antara sampel normal dan obesitas. Hal ini juga menunjukkan bahwa tidak ada perbedaan yang signifikan (p>0,05) pada lama waktu menonton televisi dan bermain game antara sampel normal dan obesitas. Korelasi Pearson menunjukkan bahwa tidak terdapat hubungan yang bermakna (p>0,05) antara asupan energi, lemak, karbohidrat, dan serat dengan status gizi, namun terdapat hubungan yang bermakna (p<0,05) antara asupan protein dengan status gizi. Tidak terdapat hubungan yang bermakna (p>0,05) antara lama menonton televisi dan bermain game/komputer dengan status gizi.
Keyword: Intake energy, Nutrients, Fiber, Physical Activity Elementary School Children

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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