Judul: The Effect of Economic Pressure and Family Resilience on Parenting Baduta Children During the Covid-19 Pandemic
Abstrak: Pandemi covi-19 memicu timbul berbagai masalah baru dalam keluarga yang berdampak pada pola asuh anak baduta. Penelitian ini bertujuan untuk menganalisis pengaruh tekanan ekonomi dan ketahanan keluarga terhadap pola asuh anak baduta pada masa pandemi covid-19. Pengambilan contoh dilakukan secara purposive sampling pada yang memiliki anak baduta dengan responden sebanyak 30 orang. Lokasi penelitian di Desa Cibatok 2, kecamatan Cibungbulang, Kabupaten Bogor, Jawa Barat menggunakan desain penelitian cross sectional study. Uji korelasi menunjukkan bahwa usia menikah istri, pendapatan per kapita dan ketahanan keluarga berhubungan positif signifikan dengan pola asuh serta pendapatan dengan ketahanan keluarga. Besar keluarga berhubungan negatif signifikan dengan ketahanan keluarga dan pola asuh. Uji regresi menunjukkan bahwa usia menikah istri, lama pendidikan istri, pendapatan per kapita dan ketahanan keluarga berpengaruh positif signifikan terhadap pola asuh, sedangakan besar keluarga dan ketahanan keluarga berpengaruh negatif signifikan terhadap pola asuh. Kata kunci : Baduta, Covid-19, Tekanan ekonomi, Ketahanan keluarga, Pola asuh., The COVID-19 pandemic has triggered new problems in the family that have an impact on the quality of the childcare environment. clown. This study aims to analyze the effect of economic pressure and family resilience on the parenting pattern of children under the age of two during the COVID-19 pandemic. Sampling was done by purposive sampling on those who have children under the age of 30 with 30 respondents. The research location is in Cibatok 2 Village, Cibungbulang sub-district, Bogor Regency, West Java using a cross-sectional study design. Correlation test shows that wife's age at marriage, income per capita and family resilience have a significant positive relationship with parenting and income with family resilience. Family size is significantly negatively related to family resilience and parenting patterns. The regression test showed that the wife's married age, wife's length of education, income per capita and family resilience had a significant positive effect on parenting, while family size and family resilience had a significant negative effect on parenting. Keywords: Baduta, Covid-19, Economic pressure, Family resilience, Parenting.
Keyword: Baduta, Covid-19, Economic pressure, Family resilience, Parenting

Judul: The Influence of Economic Pressure and Social Support towards Family Well-being in Single Parent Family During Covid-19 Pandemic
Abstrak: Adanya pandemi Covid-19 dan kebijakan Pembatasan Sosial Berskala Besar (PSBB) berdampak pada terganggunya sektor ekonomi keluarga, tak terkecuali keluarga orang tua tunggal. Penelitian ini bertujuan untuk menganalisis pengaruh tekanan ekonomi dan dukungan sosial terhadap kesejahteraan keluarga orang tua tunggal di masa pandemi Covid-19. Responden dalam penelitian ini berjumlah 68 orang dengan kriteria orang tua tunggal ibu yang memiliki anak usia sekolah (6-18 tahun). Penelitian berlokasi di wilayah Kota Bogor, Jawa Barat. Pengambilan contoh dilakukan secara online melalui metode non probability sampling dengan teknik voluntary sampling. Hasil penelitian menunjukkan bahwa terdapat hubungan negatif signifikan antara pendidikan dan pendapatan per kapita dengan tekanan ekonomi. Besar keluarga berhubungan positif dengan tekanan ekonomi. Tekanan ekonomi berhubungan negatif signifikan dengan dukungan sosial, kesejahteraan objektif, dan subjektif. Terdapat hubungan positif signifikan antara pendidikan, pendapatan per kapita, dukungan sosial, dan kesejahteraan objektif dengan kesejahteraan objektif dan subjektif. Hasil uji regresi menunjukkan bahwa pendapatan per kapita berpengaruh positif signifikan terhadap kesejahteraan objektif. Tekanan ekonomi berpengaruh negatif signifikan terhadap kesejahteraan subjektif. Dukungan sosial berpengaruh positif signifikan terhadap kesejahteraan subjektif., The existence of the Covid-19 pandemic and the Large-Scale Social Restriction (PSBB) policy have an impact on the disruption of the family's economic sector, including single-parent families. This study aims to analyze the effect of economic pressure and social support on the well-being of single-parent families during the Covid-19 pandemic. Respondents in this study amounted to 68 people with the criteria of single parents who have school-age children (6-18 years). The research is located in the city of Bogor, West Java. Sampling was done online through a non-probability sampling method with a voluntary sampling technique. The results showed that there was a significant negative relationship between education and income per capita with economic pressure. Family size is positively related to economic pressure. Economic pressure is significantly negatively related to social support, objective and subjective well-being. There is a significant positive relationship between education, per capita income, social support, and objective well-being with objective and subjective well-being. The results of the regression test show that income per capita has a significant positive effect on objective well-being. Economic pressure has a significant negative effect on subjective well-being. Social support has a significant positive effect on subjective well-being.
Keyword: covid-19 pandemic, economic pressure, family well-being, single parent, social support

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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