Judul: Relationship between Self-Esteem on Body Image Perception and Eating Disorder among Undergraduate Students in Indonesia
Abstrak: Self-esteem adalah penilaian terhadap diri sendiri secara baik positif maupun negatif. Penelitian sebelumnya menemukan bahwa self-esteem berkorelasi dengan citra tubuh dan gangguan perilaku makan. Namun, penelitian tersebut hanya dilakukan dengan subyek terbatas, serta faktor sosial dan demografi yang minim dibahas. Penelitian ini bertujuan menguji hubungan antara self-esteem terhadap persepsi citra tubuh dan gangguan perilaku makan pada mahasiswa sarjana di Indonesia. Data dikumpulkan dari hasil pengisian kuesioner oleh 407 mahasiswa sarjana di Indonesia. Tingkat self-esteem responden ditentukan dengan menggunakan Rosenberg Self-Esteem Scale (RSES). Contour Drawing Rating Scale akan digunakan untuk mengukur persepsi citra tubuh responden. Eating Attitude Test-26 (EAT-26) akan digunakan untuk mengukur mengukur gejala dan kekhawatiran responden terhadap gangguan perilaku makan. Data dianalisis dengan perangkat lunak R Studio. Korelasi antara self-esteem dengan citra tubuh dan gangguan perilaku makan dianalisis dengan uji korelasi Spearman. Studi ini menunjukkan bahwa mahasiswa sarjana di Indonesia memiliki self-esteem yang rendah (26,60, Self-esteem is a positive or negative assessment of oneself. Previous studies have found that self-esteem correlates with body image and eating disorders. However, these studies were only conducted with limited subjects, and minimal social and demographic factors were discussed. This study aims to examine the relationship between self-esteem and perceived body image and eating disorders among undergraduate students in Indonesia. Data were collected from questionnaires completed by 407 undergraduate students in Indonesia. Respondents
Keyword: citra tubuh, EAT-26, perilaku makan, RSES, self-esteem

Judul: Hubungan persepsi tubuh dengan gangguan makan pada mahasiswa
Abstrak: Tujuan penelitian ini adalah mengetahui hubungan persepsi tubuh dengan gangguan makan pada mahasiswa. Desain penelitian ini cross sesctional study pada mahasiswa baru Program Studi Ilmu Gizi di Institut Pertanian Bogor (IPB) dengan jumlah 120 remaja. Hasil studi menunjukkan proporsi subjek dengan status gizi normal 83.3%, 10.0% overweight, 4.2% obesitas dan 2.5% kurus. Penilaian MBSRQ-AS diperoleh subjek memiliki persepsi negatif terhadap evaluasi penampilan sebesar 80%, orientasi penampilan 99.2%, dan kepuasan terhadap bagian tubuh 80.8%; sedangkan 57.5% subjek cemas menjadi gemuk dan 71.7% subjek perempuan memiliki persepsi negatif terhadap kategori ukuran tubuh. Tidak terdapat gangguan makan pada subjek laki-laki sedangkan 7.8% subjek perempuan mengalami gangguan makan dengan risiko lebih karena merasa memiliki keinginan untuk makan terus-menerus dan tidak dapat berhenti makan (2-3x sebulan). Terdapat hubungan yang signifikan antara persepsi tubuh (MBSRQ-AS) pada subskala kecemasan menjadi gemuk dengan gangguan makan (p<0.05). Namun tidak terdapat hubungan yang signifikan pada subskala yang lain dan antara persepsi tubuh (FRS) dan (BIQ) dengan gangguan makan (p>0.05)., The objective of this study was to determine the relationship of body image perception and eating disorders in undergraduated students. The design of this study is cross sectional with new students that major in nutritional program in Bogor Agricultural University (IPB) with the number was 120 students. The result showed that the proportion of subjects with normal nutritional status is 83.3%, 10.0% overweight, 4.2% obesity and 2.5% thin. MBSRQ-AS’ assessment obtained that subjects have negative perception of appearance evaluation is 80%, appearance orientation 99.2% and body areas satisfaction 80.8%; whereas 57.5% subjects is anxious of being fat and 71.7% female subject has negative perception of self-classified weight. There wasn’t eating disorders in male, whereas 7.8% female subject have eating disorders with more risk (have attitute the desire to eat continously and can’t stop eating 2-3 times a month). There was significant correlation between body image perception (MBSRQ-AS) in overweight preoccupation subscale with eating disorders (p<0.05). However there were no significant correlations for other subscales and between body image perception of FRS and BIQ and eating disorders (p>0.05).
Keyword: gangguan makan, mahasiswa, persepsi tubuh

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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