Judul: Exclusive Breastfeed History, Nutritional Status, and Anemia Status of Toddler at Gegesik Cirebon Regency
Abstrak: Tujuan penelitian ini adalah menganalisis hubungan riwayat mendapat ASI eksklusif terhadap status gizi dan status anemia balita di kecamatan Gegesik kabupaten Cirebon. Desain penelitian yang digunakan adalah cross sectional. Penelitian dilakukan di tiga desa yaitu Desa Sibubut, Desa Kedungdalem, dan Desa Bayalangu Kidul, Kecamatan Gegesik Kabupaten Cirebon Provinsi Jawa Barat. Penelitian ini menggunakan data sekunder dengan jumlah subjek 119 balita. 52,1% balita berjenis kelamin perempuan dan berusia 12-23 bulan. Sebagian besar balita lahir dengan berat dan panjang yang normal. Masih terdapat 28,6% balita yang tidak mengonsumsi kolostrum dan hanya sedikit balita yang mengonsumsi ASI secara eksklusif, karena mengonsumsi makanan prelakteal, dan mengomsumsi MPASI terlalu dini. Sebagian besar balita memiliki status gizi normal berdasarkan indikator BB/U, TB/U, BB/TB, akan tetapi masih terdapat balita dengan berat badan kurang (34,5%) dan berat badan sangat kurang (8,4%), balita stunting (39,5%), serta balita dengan gizi kurang (16%) dan gizi buruk (4,2%). Terdapat 89,1% balita berstatus anemia dan paling banyak memiliki anemia kategori sedang. Hasil uji hubungan Spearman menunjukkan tidak terdapat hubungan yang signifikan antara pemberian ASI eksklusif dengan status gizi dan status anemia balita (p value>0,05)., This research aims to analyze the correlation between the history of exclusive breastfeeding with toddlers’ nutritional status and anaemia status in Gegesik, Cirebon Regency. This research design used a cross-sectional which was conducted in three villages namely Sibubut village, Kedungdalem village, and Bayalangu Kidul village, in Gegesik District, Cirebon Regency, West Java Province. The data was obtained through secondary data by including 119 toddlers which 52.1 % were female and aged 12-23 months. Most toddlers are born with a normal weight and length. Then 28.6 % of toddlers are not consuming colostrum. Therefore, only a few toddlers receive exclusively breastfeeding because they have to consume prelakteal food and complementary feeding over-early. Based on indicators of W/A, H/A, and W/H, which reveal most toddlers have a normal nutritional status, on the other hand, there are toddlers with underweight (34.5%), severely weight (8.4%), stunting (39.5%), likewise toddlers with wasting (16%), and severely wasting (4.2%). There are 89.1% of toddlers were classified as anaemia and most were in a mild category. The finding of the Spearman Correlation Test reveals that was no significant correlation between exclusive breastfeeding with nutritional status and anaemia status of toddlers (p value> 0.05).
Keyword: Nutritional Status of Toddler, Anemia Status of Toddler, Exclusive Breastfeed

Judul: Nutritional Status, Breastfeeding Knowledge, and Breastfeeding Practice in Cirebon Regency
Abstrak: Penelitian ini bertujuan untuk menganalisis hubungan status gizi ibu (asupan zat gizi dan indeks massa tubuh) dan pengetahuan ASI dengan praktik menyusui bayi usia 0–6 bulan di Kabupaten Cirebon. Desain penelitian ini adalah cross sectional study dengan jumlah subjek sebanyak 44 orang. Data yang digunakan merupakan data sekunder. Penelitian berlokasi di tiga desa di Kecamatan Gegesik, Kabupaten Cirebon yang merupakan lokus stunting. Sebanyak 47,7% subjek memiliki status gizi normal dan 29,5% subjek memiliki status gizi obesitas. Sebagian besar subjek memiliki tingkat kecukupan energi dan zat gizi yang belum mencapai kebutuhan harian. Sebanyak 63,6% subjek memiliki pengetahuan tentang ASI yang baik dan 43,2% subjek memiliki praktik menyusui yang kurang sesuai. Tidak terdapat hubungan signifikan antara tingkat kecukupan energi dan zat gizi ibu dengan status gizi bayi (p>0,05). Tidak terdapat hubungan signifikan antara karakteristik, status gizi, dan pengetahuan ibu mengenai pemberian ASI dengan praktik menyusui (p>0,05)., The purpose of this study is to analyze the relationship between maternal nutritional status (nutrient intake and body mass index) and breastfeeding knowledge with breastfeeding practices for infants aged 0-6 months in Cirebon Regency. The design of this research is a cross sectional study with a total of 44 subjects. The data used is secondary data. The study is located in three villages in Gegesik District, Cirebon Regency which were the locus of stunting. The amount of 47.7% subjects have normal nutritional status and 29.5% of subjects have obese nutritional status. Most of the subjects had adequate levels of energy and nutrients that had not yet reached their daily needs. The amount of 63.6% subjects have good knowledge of breastfeeding and 43.2% of the subjects have inappropriate breastfeeding. There is no significant relationship between the level of energy and nutritional adequacy of the mother and the nutritional status of the infants (p>0.05). There is no significant relationship between maternal characteristics, nutritional status, and knowledge of breastfeeding with breastfeeding practices (p>0.05).
Keyword: breastfeeding, breastfeeding knowledge, breastfeeding practice, nutritional adequacy, nutritional status

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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