Judul: Relationship between Mother's Nutrition Knowledge and Parental Feeding with Eating Behavior of Preschoolers
Abstrak: Penelitian ini bertujuan menganalisis hubungan pengetahuan gizi ibu dan pola asuh makan terhadap perilaku makan serta menganalisis hubungan perilaku makan dengan status gizi anak prasekolah. Desain penelitian adalah cross-sectional study melibatkan 100 anak usia 3-5 tahun di Wilayah Kerja Puskesmas Gang Kelor Bogor. Penelitian dilaksanakan pada November 2022. Data dikumpulkan melalui wawancara dan self-administered questionnaire. Hasil penelitian menunjukkan sebanyak 46% subjek tergolong picky eater. Tidak terdapat perbedaan karakteristik subjek dan keluarga antara kelompok picky eater dan non-picky eater (p>0,05), namun kelompok non-picky eater signifikan lebih sering sakit dan memiliki jumlah anggota keluarga lebih sedikit. Pengetahuan gizi sekitar ¾ ibu di kedua kelompok diklasifikan dalam kategori sedang. Tipe praktik pemberian makan yang paling banyak dipraktikkan di kedua kelompok adalah dengan tipe memberikan contoh makanan sehat (modelling). Separuh subjek dari kedua kelompok memiliki riwayat pemberian ASI yang eksklusif, namun sekitar ¾ subjek memiliki riwayat pemberian MPASI yang tidak sesuai. Hanya pada tipe praktik pemberian makan monitoring yang memiliki hubungan signifikan dengan pengetahuan gizi ibu (p=0,004). Tidak terdapat hubungan signifikan antara pengetahuan gizi ibu, praktik pemberian makan, riwayat ASI dan MPASI dengan perilaku makan anak (p>0,05) dan tidak terdapat hubungan signifikan antara perilaku makan anak dengan status gizi (p>0,05)., This study aims to analyze the relationship between mother nutrition knowledge and parenting feeding style with eating behavior and to analyze the relationship between eating behavior and nutritional status of preschooler. The research using a cross-sectional study design involving 100 children aged 3-5 years in Wilayah Kerja Puskesmas Gang Kelor, Bogor. This research was conducted in November 2022. Data were collected through interviewed and a self-administered questionnaire. The results showed that 46% of the subjects were classified as picky eaters. There were no differences in subject and family characteristics between picky eaters and non-picky eaters (p>0.05), but non-picky eater group had significantly more frequent illness and had smaller family size. Around 3/4 of mother in both groups had moderate knowledge of nutrition. The most common type of feeding practice used was by modelling of healthy food. Half of the subjects from both groups had a history of exclusive breastfeeding however 3/4 of the subjects had a history of inappropriate complementary feeding. Only the type of monitoring feeding practices had a significant relationship with mother’s nutrition knowledge (p=0,004). There was no significant relationship between mother's nutritional knowledge, feeding practice, history of breastfeeding, and complementary foods with children's eating behavior (p>0.05), also no significant relationship between children's eating behavior and nutritional status (p>0.05).
Keyword: mother's nutritional knowledge, feeding practice, history of breastfeeding and complementary feeding, parental feeding, picky eater

Judul: Hubungan Pola Asuh Makan Ibu, Kontribusi Jajanan, dan Status Gizi dengan Perilaku Picky Eating pada Anak Prasekolah di Kabupaten Bogor.
Abstrak: Penelitian ini bertujuan untuk menganalisis hubungan pola asuh makan ibu, kontribusi jajanan, dan status gizi dengan perilaku picky eating pada anak prasekolah di Kabupaten Bogor. Desain penelitian yang digunakan adalah crosssectional study. Pengambilan data dilaksanakan pada Januari–Februari 2019 di 3 Pendidikan Anak Usia Dini (PAUD) yaitu BIMBA AIUEO di Dramaga dan Cibanteng serta TK Q Al-Muttaqin Kabupaten Bogor. Sebanyak 67 anak dipilih sebagai subjek penelitian menggunakan metode purposive sampling dengan kriteria inklusi: 1) umur anak 3–6 tahun terdaftar di PAUD/TK terpilih, dan 2) Ibu/pengasuh bersedia ikut serta dan tidak buta huruf. Data primer sebagian besar diperoleh menggunakan kuesioner self-administered yang diisi sendiri oleh ibu, kecuali konsumsi jajanan anak melalui wawancara dengan kuesioner Semi- Quantitatif Food Frequency Questionnaire (SQ-FFQ). Hasil penelitian menunjukkan bahwa sebagian besar subjek (89.5%) berusia pada rentang 4–6 tahun dan berjenis kelamin perempuan (59.7%). Status gizi subjek didominasi gizi baik (58.7%). Pola asuh makan ibu subjek yang terbanyak adalah tipe demokratis (34.3%). Sebanyak 53.7% subjek memiliki perilaku tidak picky eating. Persen kontribusi jajanan terhadap kebutuhan gizi sehari didapatkan melebihi cut off (10– 20%). Tidak terdapat hubungan yang signifikan antara pola asuh makan ibu, pemberian ASI eksklusif, dan status gizi dengan perilaku picky eating (p>0.05). Terdapat hubungan yang signifikan antara perilaku picky eating dengan kontribusi makan jajanan (p=0.001; r=0.411). Oleh karena itu, diperlukan edukasi gizi dari orangtua maupun pihak sekolah agar intensitas jajan berkurang dan dapat mengatasi perilaku picky eating anak.
Keyword: ASI eksklusif, anak usia dini, kebiasaan jajan, pengetahuan 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.
Keyword: