Judul: Keragaman Konsumsi Pangan dan Hubungannya dengan Status Gizi pada Orang Dewasa di Perkotaan
Abstrak: This study aimed to analyze the diversity of food consumption and the association with nutritional status among adults in urban area especially in DKI Jakarta. This study using a cross sectional design and secondary data. Subject were 102 adults. The data collected were socio economic characteristic (age, education, family size, nutritional status (BMI and waist hip ratio), food consumption (nutrition intake and dietary diversity score) and healthy status. Diversity of food consumption can measured by Dietary Diversity Score methods and the results showed that most of subject has a good food diversity. Spearman correlation test showed that there was a positive relationship (p<0.05) between BMI with healthy status and education with iron consumption. Other variables observed were not significantly related (p>0.05).
Keyword: Bogor Agricultural University, socio nutritional status, healthy status, dietary diversity score, economic characteristic

Judul: Kualitas Konsumsi Orang Dewasa di Perkotaan dan Pedesaan.
Abstrak: Tujuan penelitian adalah menganalisis perbedaan kualitas konsumsi orang dewasa di daerah perkotaan dan pedesaan. Desain penelitian adalah cross sectional study, melibatkan 87 contoh terdiri dari 43 orang contoh di perkotaan dan 44 orang contoh di pedesaan. Penelitian dilaksanakan di Kelurahan Limus Nunggal, Cibeureum dan Desa Bojong Kembar, Cikembar keduanya berada di Sukabumi. Data yang dikumpulkan adalah karakteristik individu, kualitas konsumsi, pengetahuan gizi, dan status kesehatan dengan wawancara menggunakan kuisioner, sedangkan status gizi dan lemak tubuh didapat dengan pengukuran langsung tinggi badan, berat badan, lemak tubuh total, dan lemak viseral. Kualitas diet diukur menggunakan Healthy Eating Index (HEI). Terdapat perbedaan signifikan pengetahuan gizi, status gizi, lemak tubuh total, tingkat kecukupan energi dan lemak antara masyarakat perkotaan dan masyarakat pedesaan, namun tidak terdapat perbedaan lemak viseral, status kesehatan, tingkat kecukupan protein dan karbohidrat, serta skor HEI. Skor pengetahuan gizi contoh di perkotaan lebih baik dibandingkan dengan contoh di pedesaan. Status gizi, persen lemak tubuh, dan lemak viseral lebih baik di pedesaan karena contoh dengan kategori baik atau sehat paling banyak terdapat dipedesaan. Tingkat kecukupan energi dan zat gizi lebih besar di perkotaan dibandingkan dengan contoh di pedesaan. Tidak terdapat hubungan antara kualitas konsumsi dengan pengetahuan gizi, status gizi, persen lemak tubuh, lemak viseral, dan status kesehatan.
Keyword: healthy eating index, kualitas konsumsi, orang dewasa, perkotaan dan pedesaan

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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