Judul: Macronutrient Intake Level and Lifestyles on the Risk of Obesity in Five Provinces in Indonesia
Abstrak: Masalah obesitas semakin meningkat di berbagai negara di dunia, baik itu negara maju maupun berkembang. Obesitas adalah faktor risiko utama penyakit tidak menular seperti diabetes melitus dan penyakit kardiovaskular. Tujuan dari penelitian ini adalah untuk menganalisis sosiodemografi, pola konsumsi pangan, gaya hidup, tingkat asupan dan kecukupan energi dan makronutrien pada orang dewasa yang mengalami obesitas di lima provinsi di Indonesia. Penelitian ini menggunakan data sekunder RISKESDAS 2013 dan SKMI 2014 untuk kelompok umur 19-55 tahun di provinsi Sulawesi Utara, DKI Jakarta, Kalimantan Timur, Papua Barat, dan Sumatra Utara. Analisis bivariat digunakan untuk menganalisis hubungan faktor-faktor obesitas (sosiodemografi, pola konsumsi, dan gaya hidup), analisis multivariat digunakan untuk menentukan nilai faktor risiko obesitas, dan analisis pemenuhan kecukupan energi dan makronutrien mengacu pada rekomendasi pemenuhan gizi sesuai angka kecukupan gizi orang dewasa. Hasil analisis menunjukkan bahwa faktor sosiodemografi (umur, jenis kelamin, tempat tinggal, pendidikan, dan pekerjaan), pola konsumsi (makanan/minuman manis, makanan berlemak, sayuran, dan buah-buahan), dan gaya hidup (aktivitas fisik) berhubungan nyata terhadap obesitas. Konsumsi buah-buahan dapat mengurangi risiko obesitas sebesar 0,957 kali. Konsumsi energi (1759,22 kkal/orang/hari), protein (77,82 g/orang/hari), dan lemak (52,49 g/orang/hari) pada orang dewasa obesitas lebih tinggi daripada orang dewasa normal (1690,14 kkal/orang/hari; 68,80 g/orang/hari; 45,34 g/orang/hari). Tingkat asupan protein dan lemak menunjukkan bahwa ada perbedaan signifikan antara orang dewasa obesitas dan normal dengan nilai p masing-masing 0,018 dan 0,002. Orang dewasa obesitas dan normal mengalami status gizi sangat kurang, kurang, cukup, dan berlebih. Tingkat kecukupan protein menunjukkan bahwa ada perbedaan signifikan antara orang dewasa obesitas dan normal dengan nilai p 0,015.
Keyword: asupan makronutrien, gaya hidup, obesitas, RISKESDAS, SKMI

Judul: Faktor Gaya Hidup Dalam Hubungannya Dengan Risiko Kegemukan Orang Dewasa Di Provinsi Sulawesi Utara, Dki Jakarta, Dan Gorontalo
Abstrak: The prevalence of obesity has increased rapidly in developing countries across all population groups especially on adult. Life styles modification take important role for that. The result of Basic Health National Survey (Riskesdas) 2007 on adult in Indonesia showed that the prevalence of obesity on adult in Sulawesi Utara (33.2%), DKI Jakarta (26.9%), and Gorontalo (26.3%) was the highest in Indonesia. This study is purposing to analyse relathionships between lifestyle and obesity risk factors in Sulawesi Utara, DKI Jakarta, and Gorontalo. Design of the study is cross sectional according to Riskesdas 2007 design. Obesity clasiffication is determined by Body Mass Index (BMI) which is obesity (overweight and obese) is defined as BMI ≥25.00 and non-obesity is defined as BMI <25.00. Logistic regression analyses are carried out to determine the odds ratio of obesity across the whole characteristics. Result show that female, city area, revenue expenditure quintil 3 to 5, marriage, age ≥ 20 y can be enhance obesity risk factors on adults in three provinces. Beside that, less of physical activities as bad lifestyle can increase obesity risk factor undirectly. This implies that physical activities promotion is necessary to do at an early age for preventing obesity.
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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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