Judul: Pengetahuan Gizi, Pola Konsumsi Pangan, Aktivitas Fisik dan Hubungannya dengan Status Gizi Mahasiswa Asal Papua di Bogor
Abstrak: Students Papua referred to as of Leaving-Home students, who are want to continue their advance study to the university level that are outside the area of origin. The general objectives of this study were to assess nutrition knowledge, food consumption patterns, physical activity and their relationship to the nutritional status of students Papua in Bogor. This research was conducted in May-June 2013 followed a cross-sectional study design. Samples was purposively chosen with the total of 60 students who were fully participative in this study.The study showed that in general the nutritional knowledge of students belong to the category of less (65%); moderate (30%) and the rest (5%) as good. The average level of physical activity (PAL) based on the value of PAL between 1.40-1.69 which belongs to light activity. Most on the them (41.7%) were categorized as deficient energy, wereas most (35%) were categorized as deficient protein. Nutritional Status of students determined based on their BMI, its found that 15 % students are thin, 58.3% normal and 26.7 % student are categorized as obese. Statistical analysis by Rank Spearman correlation test showed that vitamin C consumption of the student in Baranangsiang significantly achieved recommended dietary allowance (p<0.05). Energy consumption significantly associated (p<0.05) with the nutritional status of the student in Dramaga. Sufficiency level of nutrients are still deficits, and need to be socialized to the students by using General Balanced Nutrition Guidelines (PUGS) in order to meet the daily nutritional needs of students.
Keyword: Students Papua in Bogor, Nutritional status Physical activity, Nutrition knowledge, Food consumption patterns

Judul: Kebiasaan Sarapan, Konsumsi Buah dan Sayur, dan Status Gizi Siswa Sekolah Menengah Pertama di Bogor
Abstrak: Fruits and vegetables are very important for consumption, especially for school-age children and adolescents. The purpose of this study were to analyze breakfast habits, fruits and vegetables consumption, and students’s nutritional status of junior high school in Bogor. The design of this study was cross-sectional with purposive sampling technique as much as 50 students in SMP Negeri 8 Bogor. Fruits and vegetables that consumed by students was included low as category. The result showed there was male students consumed breakfast more frequent than female students. Students’s nutritional status were categorized as normal. Correlation test showed there were no significant relationship (p>0.05) between individual and family characteristic, except households income with breakfast habits. There were no significant relationship (p>0.05) between individual and family characteristic, availability of fruits and vegetables at home, and parental habits of fruits and vegetables consumption, except households income with students of fruits consumption. Breakfast habits and fruits and vegetables consumption there were no significantly associated (p>0.05) with students’s nutritional status.
Keyword: Bogor Agricultural University (IPB), students, nutritional status, fruits and vegetables, breakfast habits

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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