Judul: Correlation between Nutritional Knowledge and Complementary Feeding Practices with Stunting in Timor Tengah Utara District
Abstrak: Stunting menjadi masalah gizi dengan prevalensi kejadian tinggi di Indonesia. Penelitian ini bertujuan menganalisis hubungan pengetahuan gizi dan praktik pemberian MP-ASI dengan kejadian stunting di Kabupaten Timor Tengah Utara. Penelitian ini menggunakan data sekunder dari penelitian Better Investment for Stunting Alleviation (BISA) 2020. Desain penelitian ini adalah cross sectional study dengan jumlah subjek sebanyak 781 orang yang dipilih dengan metode purposive sampling. Sebanyak 15,5% subjek dikategorikan severe stunting dan 19,1% subjek dikategorikan stunting. Hasil uji hubungan menunjukkan adanya hubungan signifikan antara usia subjek dan pendidikan ibu dengan stunting (p<0,05). Sebagian besar ibu subjek memiliki pengetahuan gizi yang baik (47,9%). Hasil uji hubungan menunjukkan bahwa pengetahuan gizi ibu tidak berhubungan signifikan dengan stunting (p>0,05). Sebanyak 80,9% subjek tidak memenuhi Minimum Diet Diversity (MDD), namun 85,8% subjek sudah memenuhi Minimum Meal Frequency (MMF). Terdapat 82,3% subjek yang tidak memenuhi Minimum Acceptable Diet (MAD). Hasil uji hubungan menunjukkan bahwa MDD dan MAD tidak berhubungan signifikan dengan stunting, namun MMF berhubungan signifikan dengan stunting., Stunting is a nutritional problem with a high prevalence in Indonesia. This study aims to analyze the correlation between nutritional knowledge and complementary feeding practices with the incidence of stunting in Timor Tengah Utara District. This study used secondary data from the Better Investment for Stunting Alleviation (BISA) research 2020. The design of this study was cross-sectional study with 781 subjects selected by purposive sampling method. About 15.5% of the subjects were categorized as severe stunting and 19.1% of the subjects were categorized as stunting. The results of the correlation test showed that there was a significant relationship between the subject's age and mother's education with stunting (p<0.05). Most of the subject's mothers had good nutrition knowledge (47.9%). The results of the correlation test showed that mother's nutritional knowledge was not significantly related to stunting (p>0.05). About 80.9% of the subjects did not meet the Minimum Diet Diversity (MDD), but 85.8% of the subjects met the Minimum Meal Frequency (MMF). There were 82.3% of subjects who did not meet the Minimum Acceptable Diet (MAD). The results of the correlation test showed that MDD and MAD were not significantly related to stunting, but MMF was significantly related to stunting.
Keyword: children, complementary food, nutritional knowledge, stunting

Judul: The Correlation between Breastfeeding and Complementary Feeding Practices with Stunting of Children Aged 6-23 Months in Kupang District
Abstrak: Penelitian ini bertujuan untuk menganalisis hubungan praktik pemberian ASI dan MP-ASI dengan stunting pada baduta usia 6–23 bulan di Kabupaten Kupang. Desain penelitian ini adalah cross sectional study dengan jumlah subjek sebanyak 1404 baduta yang dipilih dengan purposive sampling. Penelitian ini menggunakan data sekunder dari penelitian Better Investment for Stunting Alleviation (BISA) 2020. Sebanyak 17,9% subjek tergolong severe stunting dan 19,6% subjek tergolong stunting. Hasil uji hubungan menunjukkan adanya hubungan signifikan antara usia, jenis kelamin, status ekonomi dengan stunting (p<0.05). Mayoritas subjek pernah diberi ASI (98,2%) dan masih lanjut diberi ASI (84,8%). Sebanyak 63,5% subjek tidak memenuhi Minimum Diet Diversity (MDD), sementara 47% subjek tidak memenuhi Egg and/or Flesh Food Consumption (EFF). Masih terdapat 25,9% subjek yang tidak memenuhi Minimum Meal Frequency (MMF) dan sebagian besar subjek yaitu 79,1% tidak memenuhi Minimum Acceptable Diet (MAD). Subjek yang mengalami stunting lebih tinggi pada kelompok subjek dengan keragaman makanan yang kurang, frekuensi makan yang cukup, serta diet yang diterima tidak memenuhi MAD. Hasil uji hubungan yang dilakukan pada variabel praktik pemberian ASI dan MP-ASI tidak membuktikan adanya hubungan signifikan dengan stunting (p>0,05)., This study aims to analyze the correlation between breastfeeding and complementary feeding practices with stunting among children aged 6–23 months in Kupang District. The design of this study was cross sectional study with 1404 subjects selected by purposive sampling. This study used secondary data from the Better Investment for Stunting Alleviation (BISA) research 2020. About 17.9% of the subjects were classified as severe stunting and 19.6% of the subjects were classified as stunting. The results of correlation test showed that there was a significant relationship between age, gender, and economic status with stunting (p<0.05). The majority of the subjects had been breastfed (98.2%) and continued to be breastfed (84.8%). About 63.5% of the subjects did not meet the Minimum Diet Diversity (MDD), while 47% of the subjects did not meet the Egg and/or Flesh Food Consumption (EFF). About 25.9% of the subjects did not meet the Minimum Meal Frequency (MMF) and most of the subjects about 79.1% did not meet the Minimum Acceptable Diet (MAD). Stunting subjects were higher in the subject group with less food diversity, sufficient eating frequency, and the diet received did not meet MAD. The results of correlation test conducted on the practice of breastfeeding and complementary feeding did not prove a significant relationship with stunting (p>0.05).
Keyword: breastmilk, children, complementary food, stunting

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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