Judul: Analisis Sistem Penyelenggaraan Makanan, Ketersediaan Zat Gizi, Serta Daya Terima Menu Di Taman Kanak-Kanak
Abstrak: Tujuan penelitian adalah menganalisis sistem penyelenggaraan makanan, ketersediaan zat gizi, dan daya terima menu di TK. Penelitian menggunakan desain cross sectional study dengan 80 sampel yang dibagi dalam kelompok dengan penyelenggaraan makanan dan tanpa penyelenggaraan makanan. Sistem penyelenggaraan makanan dianalisis secara deskriptif. Daya terima diukur menggunakan skala Comstock, tingkat kesukaan menggunakan skala wajah. Ketersediaan makanan diukur dengan menimbang satu porsi makanan yang siap disajikan lalu dihitung kandungan gizinya. Data konsumsi sampel dikumpulkan dengan metode food recall. Tidak ada hubungan antara usia, jenis kelamin, status gizi, dan lama mengikuti katering terhadap daya terima menu (p>0.1). Tidak ada hubungan antara daya terima menu terhadap kecukupan energi dan zat gizi (p>0.1). Tidak ada perbedaan pada tingkat kecukupan energi, protein, lemak, karbohidrat, kalsium, dan vitamin C pada kedua kelompok (p>0.1), tetapi terdapat perbedaan pada tingkat kecukupan zat besi pada kedua kelompok (p<0.1).
Keyword: anak TK, daya terima, ketersediaan zat gizi, pelayanan makanan, tingkat kecukupan zat gizi

Judul: Analisis Sistem Pengelolaan, Tingkat Ketersediaan, Dan Daya Terima Menu Makanan Katering Sekolah
Abstrak: School age children are the national investment, so that they need optimal nutrition intake. School meal service is an alternative to overcome nutritional problems of school age children which should contribute about one third of total energy requirement per day. The aim of this study were (1) to analyze food service management at school catering, (2) to assess of hygiene and sanitation in food processing, (3) to evaluate energy and nutrients availability level from food school catering, and (4) to evaluate respondents acceptance of school meal. The cross sectional design was used in this study. The samples of this study were school meal services of Aliya (SDA) and Pertiwi (SDP) elementary school. The respondents of this study were students of fifth grader who consume school meal, catering employee, and headmaster. Food menu divided into monthly and daily. The menu of school meal services of SDA and SDP was produce in household kitchen. Menu planning at catering SDA was based on energy requirement (400-500 Calorie), while at catering SDP was not. In both school meal services, parents of the students were not involved in menu choice. Food service frequency at SDA was five times, while at SDP was four times a week. Food production was done during three and half hour in both school meal services. The period of food distribution to lunch time was 100 minutes at SDA, and 30-115 minutes at SDP. SDA did supervision at the lunch time, menu evaluation, and visit to catering periodically, while SDP did not. The average percentage of SDA employee school meal services who applied hygiene personal was 64.6%, while SDP employee was 53.8%. Average percentage of sanitation prerequisite that applied at catering SDA was 68%, while at catering SDP was 64%. Average energy availability level from food catering SDA and SDP were not yet fulfill one third energy requirement of students, but average energy availability level of monthly food catering SDP approach one third energy requirement (31.2%). The highest average percentage of acceptance toward food catering based on entire acceptance component was daily food menu catering SDP (57.5%).
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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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