Judul: The Correlation between Diet Quality and Clean and Healthy Living Behavior (PHBS) with Nutritional Status of Preschoolers
Abstrak: Penelitian ini bertujuan menganalisis hubungan kualitas diet dan praktik perilaku hidup bersih dan sehat (PHBS) dengan status gizi anak prasekolah. Desain penelitian ini adalah cross sectional study yang dilaksanakan pada bulan November 2022 pada 100 balita berusia 3-5 tahun di Wilayah Kerja Puskesmas Gang Kelor Bogor. Pengumpulan data dilakukan melalui wawancara dengan responden dan observasi. Data kualitas diet dihitung berdasarkan hasil food recall 2x24 jam menggunakan Indeks Gizi Seimbang (IGS3-60) dan Dietary Diversity Score (DDS). Hasil penelitian menunjukkan hampir seluruh subjek (96%) memiliki kualitas diet buruk berdasarkan IGS3-60, namun berdasarkan DDS lebih dari 3/4 subjek (85%) memiliki skor keragaman pangan kategori sedang. Kategori PHBS baik hanya terdapat pada 1/4 subjek (23%). Terdapat hampir 1/5 subjek mengalami kekurangan gizi (underweight 17%, wasting 11%, dan stunting 19%), serta 1/5 subjek kelebihan gizi (overweight-obese 25%). Penelitian ini tidak menemukan hubungan yang signifikan (p>0,05) antara kualitas diet berdasarkan IGS3-60 dan DDS dengan status gizi subjek, demikian pula praktik PHBS dengan status gizi subjek (p>0,05), dan praktik PHBS dengan riwayat kesehatan subjek (p>0,05). Terdapat kecenderungan skor kualitas diet dan praktik PHBS yang lebih baik pada subjek dengan status gizi normal. Anak stunting dan obesitas cenderung memiliki skor kualitas diet dan praktik PHBS yang lebih rendah., The aims of this study is to analyze the correlation between diet quality and practice of clean and healthy living behavior (PHBS) with nutritional status of preschoolers. This study conducted in November 2022 involved 100 of subjects aged 3-5 years old living in Wilayah Kerja Puskesmas Gang Kelor Bogor. Data collected was done through interviews the respondents and observation. Diet quality data was calculated from 2x24 hour food recall using Balanced Nutrition Index of 3-60 (IGS3-60) and Dietary Diversity Score (DDS). Results showed that almost all subjects (96%) had poor diet quality based on Balanced Nutrition Index (IGS3-60), but according to the DDS, over 3/4 subjects (85%) had classified as moderate diet quality. Good classification of PHBS was obtained by only 1/4 of subjects (23%). Around 1/5 subjects are undernourished (underweight 17%, wasting 11%, and stunting 19%), also 1/5 subjects are overnourished (overweight- obese 25%). This study found no significant correlation between diet quality and PHBS with nutritional status of preschoolers (p>0.05) and PHBS with children health history either (p>0.05). There are tendency of better diet quality and practice of PHBS with better preschoolers nutritional status. Obese and stunting preschoolers tended to have lower diet quality and PHBS as well.
Keyword: Dietary Diversity Score (DDS), Indeks Gizi Seimbang (IGS3-60), praktik Perilaku Hidup Bersih dan Sehat (PHBS), status gizi

Judul: Correlation between Mother's Clean and Healthy Behavior with Food Consumption and Nutritional Status of Children under Two Years Old
Abstrak: Perilaku hidup bersih dan sehat dipengaruhi oleh faktor-faktor yaitu lingkungan, karakteristik baduta dan pengetahuan serta sikap orang tua. Penelitian bertujuan menganalisis pengetahuan, sikap, dan praktik PHBS serta hubungannya dengan konsumsi pangan dan status gizi baduta. Desain penelitian adalah cross-sectional dengan 66 baduta. Subjek merupakan baduta 6-24 bulan di Desa Leuwiliang dipilih secara systematic random sampling. Mayoritas ibu baduta memiliki pengetahuan, sikap, dan praktik PHBS yang baik (87,9%, 86,4%, dan 63,6%). Sebanyak 39,4% ibu baduta memiliki persepsi yang baik terhadap lingkungan rumahnya. Tingkat kecukupan energi (84,6%AKE) tergolong kurang dari anjuran 100-<130%AKG. Indikator Ever Breastfed (EvBF), Minimum Dietary Diversity (MMD), dan Minimum Meal Frequency (MMF) pada anak sudah memenuhi standar Infant and Young Child Feeding (IYCF) practices. Mayoritas subjek (84,8%) memiliki status gizi normal. Hasil uji Rank Spearman Correlation menunjukkan adanya hubungan yang nyata antara pengetahuan PHBS dengan sikap PHBS (p<0,05). Hasil uji hubungan menunjukkan tidak adanya hubungan yang signifikan antara konsumsi ASI dan MP-ASI dengan status gizi baduta dan tidak ada hubungan yang signifikan antara pengetahuan, sikap, dan praktik PHBS dengan status gizi baduta.
Keyword: baduta, konsumsi pangan, MP-ASI, perilaku hidup bersih dan sehat, status 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.
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