Judul: Correlation between Picky Eating Behavior and Nutrition Knowledge with Diet Quality among IPB University Students
Abstrak: Penerapan pola makan yang kurang tepat pada kelompok dewasa awal umumnya disebabkan karena adanya preferensi dan kekuatan yang terbentuk dalam menentukan pilihan makanan berkaitan dengan berbagai faktor yang dapat berakibat pada risiko ketidakseimbangan asupan sesuai dengan rekomendasi. Tujuan dari penelitian ini adalah menganalisis hubungan antara perilaku picky eating dan pengetahuan gizi dengan kualitas diet mahasiswa IPB University. Kualitas diet diukur menggunakan Indonesian Healthy Eating Index (I-HEI), perilaku picky eating diukur dengan Adult Picky Eating Questionnaire (APEQ), dan pengetahuan gizi diukur dengan kuesioner terstruktur. Penelitian ini menggunakan desain cross-sectional study yang melibatkan 70 subjek mahasiswa sarjana IPB University kampus Dramaga, Kabupaten Bogor. Pengumpulan data dilakukan melalui wawancara, dan pengisian kuesioner secara langsung. Rata-rata skor I-HEI subjek adalah 51,4, The implementation of an inappropriate diet in early adulthood is generally due to the preferences and strengths formed in determining food choices related to various factors that may cause the risk of imbalance nutritional intake in accordance with recommendations. This study aims to analyze the correlation between picky eating behavior and nutritional knowledge with diet quality among IPB University students. Diet quality is measured using the Indonesian Healthy Eating Index (I-HEI), picky eating behavior is measured with the Adult Picky Eating Questionnaire (APEQ), and nutritional knowledge was measured with a structured questionnaire. The cross sectional study design is conductedwith 70 subjects of IPB University’s undergraduate students in Dramaga campus, Bogor Regency. Data collection is conducted through interviews, and self-administered questionnaire. The average I-HEI score of the subjects was 51.4
Keyword: kualitas diet, pengetahuan gizi, I-HEI, picky eating

Judul: Correlation Between Mindful Eating Behavior with Diet Quality and Nutritional Status of IPB University Undergraduate Students
Abstrak: Perilaku Emotional eating cenderung menyebabkan pelaku memilih makanan yang tidak sehat. Oleh karena itu, salah satu cara untuk mengatasi perilaku makan yang tidak sehat adalah dengan menerapkan mindful eating. Tujuan dari penelitian ini adalah menganalisis hubungan antara perilaku mindful eating dengan kualitas diet dan status gizi pada mahasiswa sarjana IPB University. Kualitas diet diukur menggunakan Indonesian Healthy Eating Index (I-HEI), status gizi diukur dengan persen lemak tubuh, dan praktik mindful eating diukur dengan Mindful Eating Questionnaire (MEQ). Penelitian ini menggunakan desain cross sectional study serta melibatkan 88 subjek yang merupakan mahasiswa sarjana IPB University. Pengumpulan data dilakukan melalui wawancara, dan pengisian kuesioner secara langsung. Rata-rata skor I-HEI subjek adalah 60,5±9,0 yang termasuk kategori need improvement. Sebagian besar status gizi subjek tergolong normal (67%) dengan rata-rata persen lemak tubuh subjek perempuan 27,6% dan subjek laki-laki 16,4%. Hasil penelitian ini menunjukkan tidak terdapat hubungan signifikan antara praktik mindful eating dengan kualitas diet dan status gizi mahasiswa sarjana IPB University (p>0,05).
Keyword: I-HEI, kualitas diet, mindful eating, status gizi

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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