Judul: Efektivitas Program Keamanan Pangan Terhadap Perubahan Pengetahuan Anak Serta Orang Tua
Abstrak: Food safety knowledge of students and parents’ need to be improved to minimize the risk of food poisoning which most cases occured at home and school. The aim of this research was to determine the effectivity from various food safety programs that have held at school towards the improvement of food safety knowledge among primary school students, and their parents’ behavior. The survey data gained from 397 primary school students and 195 parents were analyzed using SPSS through contingency and spearman analysis methods. The result affirming activities which significantly associated with the improvement of primary school students’ knowledge in West-part of Indonesia were pasting food safety poster and establishing of food safety team, while in East-part of Indonesia were pasting food safety poster and conducting food safety extension. The result of spearman correlation revealed that parents’ educational level had no effect over the improvement of primary school students’ knowledge about food safety (p= 0.276 >α= 0.05).
Keyword: Bogor Agricultural University (IPB), student knowledge, primary school student, parent, food safety

Judul: Efektivitas Media Promosi Keamanan Pangan BPOM terhadap Pengetahuan dan Sikap Keamanan Pangan Siswa Sekolah Dasar Terakreditasi A di Jakarta Pusat.
Abstrak: Pangan Jajanan Anak Sekolah (PJAS) adalah salah satu prioritas pengawasan keamanan pangan di Indonesia. Permasalahan keamanan PJAS dapat ditinjau dari higiene perorangan, penjual, cara pengelolaan, cara penyajian, cara penyimpanan, dan kebiasaan jajan. Penyampaian informasi keamanan PJAS oleh BPOM dapat melalui media promosi berupa komik, poster, dan laman Klub Pompi. Penelitian ini bertujuan mengetahui efektivitas media promosi keamanan pangan BPOM sebagai sarana edukasi terhadap pengetahuan dan sikap anak-anak sekolah mengenai keamanan pangan. Jumlah responden ditentukan dengan nonprobability purposive sampling. Responden adalah anak-anak sekolah dasar (SD) kelas 5 dari 18 SD terakreditasi A di Jakarta Pusat. Media komik, poster, dan laman Klub Pompi efektif meningkatkan pengetahuan dan sikap siswa. Hasil pengolahan data uji beda berpasangan dengan IBM SPSS Statistik 22.0 menunjukkan bahwa ketiga media signifikan (p value <0.05) pada taraf signifikansi 5%. Terdapat perbedaan nyata sebelum dan sesudah dilakukan intervensi. Media yang paling efektif adalah poster. Jenis kelamin memiliki hubungan dengan nilai pengetahuan sebelum intervensi, uang jajan per hari dan pekerjaan orang tua memiliki hubungan dengan nilai pengetahuan setelah intervensi. Pendidikan orang tua memiliki hubungan dengan nilai sikap setelah intervensi dalam jangka waktu dua minggu. Hubungan yang signifikan ditunjukkan dengan nilai Pearson Chi Square <0.05 pada taraf signifikansi 5%.
Keyword: efektivitas, keamanan pangan, media promosi, PJAS, uji beda

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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