Judul: ubungan Pengetahuan Gizi, Keanekaragaman Konsumsi Pangan dan Kebiasaan Olahraga dengan Kebugaran Anggota UKM Sepakbola IPB
Abstrak: The objective of this study was to analyze the association of nutritional knowledge, food diversification, exercise habits and fitness in soccer club members in Bogor Agricultural University. A cross sectional study of 25 subjects was conducted. The study showed the average score of subjects’ nutritional knowledge was categorized as moderate (80%) and food consumption of most of the subjects (84%) were not varying. Energy and fat sufficiency levels of the subjects were in normal category. Protein, carbohydrate and vitamin A sufficiency levels of most of the subjects were in below normal category. Calcium Iron, and vitamin C sufficiency levels of subjects were sufficient. Most of the VO2max of 64% subjects were in sufficient category. The study showed that there was correlation (p<0.05) between nutritional knowledge and exercise habits, nutritional knowledge and fitness, exercise habits and fitness. There was no correlation (p>0.05) between nutritional knowledge and food diversification and nutrient sufficiency level.
Keyword: fitness, physical activity, exercise habits, nutritional knowledge

Judul: Pengetahuan Gizi terkait Penyakit Degeneratif, Pola Konsumsi, dan Aktivitas Fisik Mahasiswa IPB
Abstrak: This study aims to analyze the association between nutrition knowledge with food consumption pattern and physical activity of students in Bogor Agricultural University. Design of this study was cross sectional with purposive sampling 80 students in nutrition science and forest management Bogor Agricultural University. Nutrition knowledge related degenerative disease in sample GIZ (79.3±9.5) was higher than MNH (39.3±17.1). The average frequency of consumption dietary fats, sweetened food, salty and preserved food, fast food, soft drink and caffeinated beverages in sample MNH (8.8±5.2; 2.1±3.7; 16.5±11.2; 7.9±2.2; 4.6±3.7; 3.6±4.2; 2.6±3.0) times/week was higher than sample GIZ (7.8±4.0; 0.9±1.3; 13.5±8.7; 4.1±2.8; 2.3±3.3; 1.3±2.6) times/week, respectively. However, the average vi frequency of consumption vegetables and fruits in the sample GIZ (18.6±12.5; 10.3±8.9) times/week was higher than sample MNH (15.0±11.5; 6.1±5.4) times/week, respectively. Physical activity levels of sample GIZ (1.56±0.21) was relatively similar to the MNH (1.59±0.19). Based on Spearman correlation, there was a significant correlation (p<0.05) between nutrition knowledge related degenerative disease with frequency of consumption salty and preserved food, vegetables, fruits, and caffeinated beverages. There was no significant correlation (p≥0.05) between nutrition knowledge related degenerative disease with frequency consumption of dietary fats, sweetened food, fast food, soft drink, dan physical activity.
Keyword: Bogor Agricultural University, physical activity., nutrition knowledge related degenerative disease, food pattern

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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