Judul: Analisis KonsumsiPanganPendudukProvinsi DKIJakarta
Abstrak: This study was aimed to assess food consumption of people in DKI Jakarta. The design of this study was cross sectional study. The study which is conduted from analyzing food consumption data of Basic Health Research 2010 collected by a 24-hour recall method. Subject obtained from1626 households with 4964 household members.The result showed that energy consumption average of households stood at 1500 ± 711.48 kkal/cap/day and protein consumption average of households stoodat 50.82 ± 27.1 g/cap/day.Almost all (53.1%) energyadequacy level (TKE) households stood atextreemly leveldeficit category,proteinadequacylevel (TKP) households stood at normal category (47.2%) and desirable dietary pattern (PPH) stood at76.6. Spearman test resultshowed there wasno significant correlation(P>0.05) between maternal education level, number of household memberand food expenditure to householdsTKE and TKP.
Keyword: Bogor Agricultural University (IPB), protein adequacy level (TKP), energy adequacy level (TKE), household, food consumption

Judul: Analysis of The Situation and Determinant Factors  Affecting Food Consumption among Population in DKI Jakarta Province
Abstrak: Penelitian ini bertujuan untuk untuk menganalisis situasi konsumsi pangan penduduk serta faktor determinan wilayah terkait di Provinsi DKI Jakarta. Penelitian ini menggunakan data sekunder dari BPS dan Badan Ketahanan Pangan yang diolah dan dianalisis secara kuantitatif dengan teknik deskriptif. Hasil penelitian ini menunjukkan bahwa rata-rata peningkatan jumlah penduduk sebesar 84.591 jiwa tiap tahunnya. Rata-rata peningkatan RLS sebesar 0,09 tahun dan rata rata peningkatan pengeluaran pangan sebesar Rp 52.267/kap/bulan tiap tahunnya. Rata-rata persentase pengeluaran pangan sebesar 38,65%. Tingkat kecukupan energi (TKE) di Provinsi DKI Jakarta tahun 2013-2020 terendah sebesar 86,2% dan tertinggi sebesar 106,2%. Tingkat kecukupan protein (TKP) terendah sebesar 102,1% dan tertinggi sebesar 126,8%. Skor PPH belum ada yang mencapai skor PPH maksimal tetapi sudah tergolong cukup baik yaitu terendah sebesar 81,7 dan tertinggi sebesar 89. Forecasting jumlah penduduk tahun 2021-2023 menggunakan metode deret geometri. Forecasting RLS, pengeluaran pangan, TKE, TKP, dan skor PPH menggunakan metode moving average. Hasil uji regresi menunjukkan bahwa jumlah penduduk dan pengeluaran pangan tidak berpengaruh secara signifikan terhadap TKE, TKP, dan skor PPH konsumsi pangan (p>0,01). RLS berpengaruh secara signifikan terhadap TKE (p=0,0948) dan skor PPH (p=0,0775), tetapi tidak berpengaruh secara signifikan terhadap kuantitas TKP konsumsi pangan (p>0,01)., This research aims to analyze the population's food consumption situation and related regional determinant factors in DKI Jakarta Province. A secondary data from BPS and Food Security Agency which was processed and analyzed quantitatively using descriptive techniques. The results of this research showed that the average population increase is 84591 people each year. The average increase in RLS is 0.09 years and the average increase in food expenditure is IDR 52267,00/cap/month each year. The energy adequacy level (TKE) was the lowest at 86.2% and the highest at 106.2%. The lowest level of protein adequacy (TKP) was 102.1% and the highest was 126.8%. No PPH score has yet reached the maximum PPH score but it is quite good, the lowest is 81.7 and the highest is 89. Forecasting total population in 2021-2023 uses the geometric series method. Forecasting RLS, food expenditure, TKE, TKP, and PPH scores using the moving average method. The results of the regression test showed that total population and food expenditure did not significantly affect TKE, TKP, and PPH score of food consumption (p>0.01). RLS did significantly affect TKE (p=0.0948) and PPH score (p=0.0775), but did not significantly affect TKP food consumption (p>0.01).
Keyword: economic and sociodemographic factors, energy and protein adequacy  levels, food consumption, pph score

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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