Judul: The Influence of Economic Pressure and Financial Management on Parenting Quality in Stunting Children
Abstrak: Stunting menjadi permasalahan multidimensi yang tidak hanya berkaitan dengan faktor gizi dan kesehatan, tetapi juga faktor pengasuhan. Kualitas pengasuhan memegang peranan penting dalam mendukung pemenuhan kebutuhan tumbuh kembang anak yang optimal. Penelitian ini bertujuan untuk menganalisis pengaruh karakteristik anak, karakteristik keluarga, tekanan ekonomi, dan manajemen keuangan terhadap kualitas pengasuhan. Penelitian dilakukan dengan pendekatan kuantitatif dan desain cross sectional study. Penelitian melibatkan 68 ibu dari keluarga utuh dengan anak stunting berusia 24-59 bulan dan berdomisili di Kecamatan Tanjungsari, Kabupaten Sumedang, Provinsi Jawa Barat. Responden penelitian diperoleh melalui non-probability sampling dengan teknik purposive sampling. Hasil penelitian menunjukkan bahwa tekanan ekonomi dan manajemen keuangan keluarga berada pada kategori sedang, sementara kualitas pengasuhan terkategori rendah. Usia anak, lama pendidikan ibu dan ayah, serta manajemen keuangan berhubungan positif signifikan dengan kualitas pengasuhan, sedangkan tekanan ekonomi berhubungan negatif signifikan dengan kualitas pengasuhan. Hasil uji regresi menunjukkan bahwa usia anak dan manajemen keuangan berpengaruh positif signifikan terhadap kualitas pengasuhan, sementara tekanan ekonomi berpengaruh negatif signifikan terhadap kualitas pengasuhan., Stunting is a multi-dimensional problem that is not only related to nutrition and health factors, but also parenting factors. The quality of parenting plays an important role in supporting the fulfillment of children's optimal growth and development needs. This study aims to analyze the influence of child characteristics, family characteristics, economic pressure, and financial management on the quality of parenting. The research was conducted using a quantitative approach and cross-sectional study design. This study involved 68 mothers from intact families with stunted children aged 24-59 months and residing in Tanjungsari District, Sumedang Regency, West Java Province. Respondents were obtained through non-probability sampling with purposive sampling technique. The results showed that the economic pressure and the financial management were categorized as moderate, while the quality of parenting are in the low category. A child's age, parent’s education, and the financial management are significantly positive related to parenting quality, while the economic pressure is significantly negative related to parenting quality. The regression test results show that the child’s age and the financial management have a significant positive effect on parenting quality, while the economic pressure has a significant negative effect on parenting quality.
Keyword: economic pressure, financial management, parenting quality, stunting, toddler

Judul: The Effect of Economic Pressure and Quality of Life on The Quality of Family Care with Stunting Children
Abstrak: Indonesia saat ini masih dihadapkan permasalahan kesehatan, yaitu stunting. Kondisi tersebut dapat disebabkan oleh berbagai faktor baik secara langsung maupun tidak langsung. Faktor penyebab stunting secara tidak langsung menjadi perhatian bersama saat ini adalah kondisi keluarga baik itu secara ekonomi, sosial, hingga kualitas pengasuhan yang diberikan kepada anak. Tujuan dari peneilitian ini adalah untuk menganalisis pengaruh tekanan ekonomi dan kualitas hidup terhadap kualitas pengasuhan keluarga dengan anak stunting. Penelitian ini melibatkan 69 ibu dengan anak stunting. Lokasi penelitian berada di Kelurahan Bubulak, Kota Bogor, Jawa Barat. Pengambilan contoh menggunakan non-probability sampling dengan menggunakan teknik purposive sampling. Uji korelasi menunjukkan bahwa tekanan ekonomi memiliki hubungan negatif signifikan dengan kualitas hidup dan kualitas pengasuhan. Kualitas hidup berhubungan positif signifikan dengan kualitas pengasuhan. Hasil uji regresi menunjukkan bahwa usia anak dan kualitas hidup berpengaruh positif signifikan terhadap kualitas pengasuhan. Diperlukan kesadaran dan kerjasama berbagai pihak untuk memutus rantai malnutrisi antar generasi.
Keyword: economic pressure, stunting, quality of life, quality of care

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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