Judul: Correlation Between Body Image, Breakfast and Snacking Habit with Nutritional Status of Female Adolescents
Abstrak: Rasa tidak puas pada bentuk tubuh bagi remaja seringkali berdampak pada kebiasaan makan sehingga menunda dan/atau melewatkan waktu makan. Oleh karena itu penelitian ini bertujuan untuk menganalisis hubungan antara body image, kebiasaan sarapan, dan jajan dengan status gizi remaja putri SMA Negeri 33 Jakarta. Desain penelitian ini adalah cross sectional study dengan subyek berjumlah 62 orang dipilih secara purposive sampling, terdiri dari 31 subyek dengan status gizi lebih dan 31 subyek dengan status gizi normal. Pengumpulan data dilakukan melalui google form dan wawancara melalui telepon. Hasil penelitian menunjukkan bahwa subyek berstatus gizi lebih yang memiliki body image negatif (93,5%) adalah signifikan (p<0,05) lebih banyak daripada yang berstatus gizi normal (77,4%). Kebiasaan atau frekuensi sarapan dan jajan subyek berstatus gizi lebih masing-masing tidak berbeda signifikan (p>0,05) dengan yang berstatus gizi normal. Berdasarkan hasil uji korelasi menunjukkan bahwa terdapat hubungan signifikan positif (p=0,001, r=0,410) antara body image dengan status gizi subyek. Hal ini berarti bahwa semakin tinggi nilai z-score IMT/U (overweight) subyek maka persepsi terhadap body image semakin negatif. Namun demikian tidak terdapat hubungan signifikan (p>0,05) antara body image dengan kebiasaan sarapan dan jajan., Dissatisfaction with body image for adolescents often has an impact on eating habits that are different from usual, causing them to delay and/or skip meals. This research aimed to analyze the correlation between body image, breakfast and snacking habits with nutritional status of female adolescents at SMA Negeri 33 Jakarta. A cross sectional study design with 62 subjects selected purposively sampling, consisting of 31 subjects with overweight nutritional status and 31 subjects with normal nutritional status. Google forms and phone interviews were used to obtain the data. The results showed that overweight subject with a negative body image (93,5%) were significantly higher (p<0,05) than those with a normal nutritional status (77,4%). Breakfast and snacking habits, estimated by its frequencies, of overweight and normal nutritional status of subject were not significantly (p>0.05) different. Based on the correlation test, there was a significant positive correlation (p= 0,001, r= 0,410) between body image and the nutritional status of the subjects. This indicated that the higher the z-score BMI/A (overweight) subject, the more negative the perception of body image. Meanwhile, there were not significant correlation (p>0.05) between body image with breakfast and snacking habits.
Keyword: ody image, breakfast habits, nutritional status, snacking habits

Judul: Study about Body Image, Eating Habit, and Nutritional Status of Female Student at SMAN 1 Ciomas
Abstrak: Penelitian ini bertujuan mengetahui hubungan antara body image, kebiasaan makan, dan status gizi pada siswi di SMAN 1 Ciomas. Desain penelitian yang digunakan adalah cross sectional study dengan subjek berjumlah 65 siswi kelas X dan XI di SMAN 1 Ciomas. Hasil penelitian ini menunjukan bahwa berdasarkan metode Figure Rating Scale (FRS), sebanyak 60% subjek memiliki body image positif. Namun, terdapat 11 dari 16 subjek yang berstatus gizi normal dengan body image negatif yang menganggap bentuk tubuhnya saat ini belum ideal dan menginginkan bentuk tubuh yang lebih langsing. Sedangkan berdasarkan metode Multidimensional Body-Self Relations Questionnaire-Appearance Scale (MBSRQ-AS) sebanyak 67,7% subjek memiliki body image normal dan 16,9% memiliki body image positif. Subjek memiliki kebiasaan makan yang tergolong baik (56,9%). Sebagian besar subjek (78,5%) memiliki status gizi normal berdasarkan IMT/U. Terdapat hubungan yang signifikan antara subskala MBSRQ-AS evaluasi penampilan dengan status gizi (p= 0,021: r= 0,286). Tidak terdapat hubungan yang signifikan antara body image dengan status gizi dan status gizi dengan kebiasaan makan. Kata kunci : body image, kebiasaan makan, remaja perempuan, status gizi, This study aims to determine the relationship between body image, eating habits, and nutritional status of female student at SMAN 1 Ciomas. The design of study was cross sectional study with 65 female students in 1st and 2nd grade at SMAN 1 Ciomas as the subject. The results showed that based on the FRS method, 60,0% of the subjects had positive body image perception. The results of this study indicate that based on the Figure Rating Scale (FRS) method, 60% of the subjects have a positive body image. However, there were 11 out of 16 subjects with a normal nutritional status that have negative body images who consider their current body shape to be not ideal and want a slender body shape. Meanwhile, based on the MBSRQ-AS method, 67,7% of the subject had normal body image perception and 16,9% had positive body image perception. Subjects tend to had healthy eating habits (56,9%). Most of the subjects (78,5%) had normal nutritional status based on BMI for Age. There was a significant correlation between the MBSRQ-AS’s subscale appearance evaluation with nutritional status (p= 0,021: r= 0,286). There was no significant correlation between body image perception with nutritional status and nutritional status with eating habit. Key words: body image, eating habit, female adolescence, nutritional status
Keyword: body image, eating habit, female adolescence, nutritional status

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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