Judul: Analisis Hubungan Persepsi Diri dan Makanan, Konsumsi Pangan dan Status Gizi Remaja Usia Sekolah Menengah di Kabupaten Bogor
Abstrak: Adolescent still in process for rich their mental, emotional, social and physical maturity, thinking ability and transition to a new function in social life. One of mentally violence was thinking bad to become fat, that’s way malnutrition happening in adolescent. Negative perception in adolescent was the base of this research. The aim of this research was to analyzed correlation of body images perception, food perception, and food consumption with nutritional status in adolescent. This research used cross-sectional design, done in high schools, which were SMA Negeri 3 Bogor (city) and SMA Negeri 1 Leuwiliang (rural). Primer data collected was from March until June 2012, with 80 student’s second graduate. Data collected by filled the questioner with interview technic, collected family characteristic’s data and individual characteristic’s data. Body image perception’s data got from interviewed and images chose. Food perception’s data got from interviewed. Consumption’s data got from filled food recall 2×24 hours. Nutritional status’s data got from measured in high and weigh. Data was analyzed with Microsoft Excell and Statistical Program for Social Science (SPSS) version 18.0 for Windows. Correlation was analyzed by Pearson correlation and significant at the 0.05 level. SMA Negeri 3 Bogor’s location in the middle of city that has much public facilities and some shopping area in Bogor, had complete facility at school, allowed bringing their laptop and also smart phone. SMA Negeri 1 Leuwiliang far from public facilities and shopping area, located at rural, school has good facility but not same as SMA Negeri 3 Bogor’s facilities and not allowed to bring their gadget. Family size correlated with where they live in and 15% family size from adolescent samples that live at rural is a big family. Father’s income correlated with where they live in, father’s income from adolescent samples that live around the city is more than five million per month (37.5%), occupied as an official employee and had high education. Father’s income from adolescent samples that live around the rural is one to three million per month (47.5%), occupied as a trader and had education until high school’s graduate. Mother’s from adolescent samples 56.3% is a housewife. Mother’s who work, occupied as an official employee (30%) and occupied as a trader (11.3%) for the next. Mother’s education correlated with where they live in and mother’s education from adolescent samples that live around the city 70% was graduates from university and than mother’s education from adolescent samples that live around the rural 35% was graduates from high school. Adolescent samples who live around the city had better food habit than adolescent samples who live at rural (r=0.425, P=0.000). Adolescent samples who live around the city have better nutritional education than adolescent samples who live at rural (r=0.252, P=0.001). x Adolescent samples had a positive perception about their body image (75%). No specific answers from adolescent samples about their food perception and body shape’s ideal concept, so we can say that their food perception is positive. Adolescent samples nutrition adequacy was low, but for energy and protein adequacy was rich to 70% from energy and protein requirement. Average
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Judul: Analisis pengaruh faktor sosial ekonomi dan persepsi body image terhadap status gizi siswi di dua smp di Kabupaten Bogor
Abstrak: Masalah gizi bukan hanya berkaitan dengan masalah pangan dan kesehatan tetapi juga berkaitan dengan masalah sosial ekonomi. Pada masyarakat yang memiliki tingkat ekonomi yang maju, anak-anak tumbuh lebih cepat daripada masyarakat pada golongan ekonomi rendah karena asupan gizi yang lebih baik sehingga dapat menunjang tumbuh kembang anak (Khomsan 2005). Masa remaja merupakan salah satu tahapan penting dalam masa pertumbuhan seseorang karena kecepatan pertumbuhan fisik masa ini adalah kedua tercepat setelah masa bayi. Di lain pihak remaja putri cenderung membatasi asupan makanan karena ingin tampak langsing. Pengaruh lingkungan yang menganggap bahwa tubuh kurus adalah cantik telah mempengaruhi persepsi remaja (body image). Status gizi yang rendah pada remaja termasuk remaja putri akan berdampak pada produktifitas dan performa seorang remaja yang dalam jangka panjang akan berdampak pada masa dewasa. Penelitian ini mengkaji sejauh mana pengaruh sosial ekonomi dan persepsi body image terhadap status gizi pada remaja putri. Tujuan umum penelitian ini adalah menganalisis pengaruh faktor sosial ekonomi dan persepsi body image terhadap status gizi siswi di dua SMP di Kabupaten Bogor. Tujuan khususnya adalah mempelajari karakteristik keluarga (besar keluarga, tingkat pendidikan ibu, tingkat pendidikan ayah, dan pengeluaran keluarga per kapita per bulan), karakteristik individu (usia, kondisi menstruasi, riwayat penyakit, dan pengetahuan gizi), dan status gizi; menganalisis kebiasaan makan (frekuensi, jumlah, dan jenis konsumsi pangan keragaman konsumsi pangan, intake energi dan zat gizi [protein, kalsium, zat besi, vitamin A, dan vitamin C], dan tingkat kecukupan energi dan zat gizi); mempelajari persepsi body image remaja (harapan bentuk tubuh dan penilaian terhadap bentuk tubuh aktual); menganalisis hubungan antara karakteristik keluarga dan karakteristik individu terhadap persepsi body image; menganalisis hubungan antara karakteristik keluarga, karakteristik individu, persepsi body image, dan tingkat kecukupan energi dan zat gizi terhadap status gizi; menganalisis pengaruh karakteristik keluarga, karakteristik individu, dan tingkat kecukupan energi dan zat gizi terhadap persepsi body image; menganalisis pengaruh karakteristik keluarga, karakteristik individu, tingkat kecukupan energi dan zat gizi, dan persepsi body image terhadap status gizi. Penelitian ini merupakan bagian dari penelitian payung yang berjudul “Studi Efikasi Pengaruh Suplementasi dan Pendidikan Gizi terhadap Status Besi, Kebiasaan Makan, dan Prestasi Belajar Remaja Putri”. Desain penelitian yang digunakan adalah cross sectional study. Penelitian ini dilakukan dari bulan Oktober-Desember 2009 dan Mei-Juni 2010 di dua SMP yang terdapat di Kabupaten Bogor yaitu di SMP Negeri 2 Ciomas dan SMP Negeri 3 Ciawi. Contoh yang diambil berjumlah 80 orang yang memenuhi kriteria inklusi penelitian payung yaitu kelas 1 dan 2, sudah menstruasi, memiliki kadar Hb di bawah normal (<12 mg/dl dengan metode Hemocue), dan bersedia mengikuti penelitian.
Keyword: Socioeconomic impact, Body image perception, Nutritional status, Adolescents girl, Bogor Agricultural University

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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