Judul: The Influence of Nutrition Education on Mother's Knowledge about Balanced Diet and My Plate
Abstrak: Pengetahuan gizi ibu merupakan salah satu hal penting dalam perbaikan gizi ibu, anak, dan masyarakat karena ibu berperan utama sebagai pengasuh dan sumber informasi gizi dan kesehatan bagi anggota keluarga. Penelitian ini bertujuan untuk menganalisis pengaruh edukasi gizi terhadap pengetahuan ibu tentang gizi seimbang dan isi piringku. Penelitian ini menerapkan pendekatan kuantitatif dengan desain pre-test post-test intervention menggunakan data sekunder program Gerakan Edukasi Gizi dan Makan Bubur Bergizi (GEMA BUGIZI). Jumlah total subjek yang memenuhi kriteria inklusi penelitian sebanyak 542 ibu. Hasil penelitian menunjukkan bahwa edukasi gizi yang dilakukan berpengaruh signifikan terhadap peningkatan skor pengetahuan gizi seimbang, isi piringku, serta skor total gizi seimbang dan isi piringku. Hal tersebut menunjukkan bahwa edukasi gizi yang dilakukan pada kegiatan “GEMA BUGIZI” berhasil meningkatkan pengetahuan gizi ibu., Mother’s nutritional knowledge is one of the important things in improving the nutrition of mothers, children, and society because mothers play a major role as caregivers and sources of nutrition and health information for family members. This study aims to analyze the effect of nutrition education on mother’s knowledge about balanced diet and my plate. This research applies a quantitative approach with a pre-test post-test intervention design using secondary data from the Nutrition Education Movement and Eating Nutritious Porridge (GEMA BUGIZI) program. The total number of subjects who met the research inclusion criteria was 542 mothers. The results of the study showed that the nutrition education carried out had a significant effect on increasing the knowledge score of balanced diet, my plate, as well as the total score of balanced diet and my plate. This shows that the nutrition education carried out in the
Keyword: my plate, Balanced nutrition education, mother's nutritional knowledge, pre-test post-test intervention, balanced diet

Judul: The Effect of Nutrition Education through Nutri-c Media and Lecture Methods on Knowledge and Attitudes of Balanced Nutrition in Elementary School Students
Abstrak: Pendidikan gizi seimbang menjadi salah satu upaya untuk meningkatkan penerapan Pedoman Gizi Seimbang (PGS) pada anak usia sekolah. Penelitian ini bertujuan menganalisis pengaruh pemberian pendidikan gizi seimbang melalui media nutri-c terhadap pengetahuan dan sikap gizi siswa sekolah dasar. Penelitian ini menggunakan desain quasi experimental yang dilaksanakan pada bulan Maret-Mei 2023 di SDN Ciherang 04, Kabupaten Bogor. Subjek merupakan siswa kelas 5 SD dengan jumlah 44 orang yang dipilih secara purposive dan dibagi ke dalam dua kelompok penelitian. Kelompok intervensi 1 mendapatkan intervensi menggunakan media nutri-c sedangkan kelompok intervensi 2 menggunakan metode ceramah. Hasil uji beda Wilcoxon menunjukkan terdapat perbedaan pengetahuan gizi seimbang yang signifikan setelah intervensi pada kelompok intervensi 1 (p=0,000). Tidak terdapat perbedaan yang signifikan terkait sikap gizi seimbang setelah intervensi pada kelompok intervensi 1 (p=0,063). Perbedaan pengetahuan (p=0,000) dan sikap (p=0,002) gizi seimbang sebelum dan setelah intervensi pada kelompok intervensi 2 menunjukkan hasil yang signifikan. Media nutri-c lebih efektif meningkatkan pengetahuan subjek. Hasil uji beda Mann Whitney U menunjukkan tidak terdapat perbedaan yang signifikan terkait pengetahuan (p=0,924) dan sikap (p=0,212) gizi seimbang antara kelompok penelitian. Tidak terdapat hubungan yang signifikan antara pengetahuan dengan sikap gizi seimbang subjek setelah mendapatkan intervensi berdasarkan hasil uji korelasi Spearman (p<0,05)., Balanced nutrition education is one of the efforts to improve the implementation of Balanced Nutrition Guidelines (PGS) for school-age children. This study aimed to analyze the effect of providing balanced nutrition education through nutri-c media on the nutritional knowledge and attitudes of elementary school students. This study used a quasi-experimental design which was conducted from March to May 2023 at SDN Ciherang 04, Bogor Regency. The subjects were 5th grade elementary school students with a total of 44 people selected purposively and divided into two research groups. The intervention group 1 received intervention using nutri-c media while the intervention group 2 used the lecture method. The results of the Wilcoxon differential test showed that there were significant differences in knowledge of balanced nutrition after the intervention in the intervention group 1 (p=0.000). There was no significant difference regarding the attitude of balanced nutrition after the intervention in the intervention group 1 (p=0.063). Differences in knowledge (p=0.000) and attitudes (p=0.002) about balanced nutrition before and after the intervention in the intervention group 2 showed significant results. Nutri-c media is more effective in increasing subject knowledge. The results of the Mann Whitney U test showed that there were no significant differences in knowledge (p=0.924) and attitude (p=0.212) to balanced nutrition between the study groups. There was no significant relationship between knowledge and balanced nutrition attitudes of the subjects after receiving the intervention based on the results of Spearman's correlation test (p<0.05).
Keyword: balance diet guideline, nutri-c, nutrition attitude, nutrition education media, nutrition knowledge

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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