Judul: Kebiasaan Jajan Anak Sekolah Dasar di SD 036, SD 070 dan SD Muhammadiyah 5 Kota Pekanbaru
Abstrak: The purpose of this study was to examine the habits of eating snacks among the school children at SD 036, SD 070 and SD Muhammadiyah 5 in the town of Pekanbaru. This was a cross sectional study with the subjects of 108 children in Grades 4 and 5(10-12 years). The data on the habit of eating snacks were collected by using a 2x24 hour Food Recall and Food Frequency (FFQ), processed using Nutrisurvey, Microsoft Excel 2007 and analyzed using the Statistical Program for Social Science (SPSS) 16.0 for Windows. The Spearman correlation results indicated there was a significant positive relationship between parent’s (mother and father) education and the number of major foods and beverages, while on the food frequency mother’s education had a significant and positive correlation with the main meal snacks and beverages. The Spearman correlation results also showed a significant negative relationship between mother’s education and the habit of eating snacks (number of snack types and frequency) and between father and mother's education and fruit snack habit (number of snack types and frequency). Further, the Spearman correlation results indicated that there was a significant positive relationship between family income and the habit of eating snacks (the number of minor snack types and snack frequency), and on the fruit snacks there was a significant positive correlation between family income and the number of snack types, while on the beverage snacks there was a significant negative correlation between the amount of snack pocket money and the snack habit (number of snack types and frequency). The amount of snack pocket money and the number of major food snack types were positively and significantly related, and on beverage snacks there was also a positive and significant correlation between the amount of snack pocket money and the snack habit (number of snack types and frequency).
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Judul: Hubungan antara konsumsi jajanan, higiene dan sanitasi dengan morbiditas dan status gizi anak SD Negeri 3 Tangerang Selatan dan SD Negeri Parakan 1 Tangerang Selatan
Abstrak: The objective of this research was to examine the relationship between consumption of snacks, hygiene and sanitation with morbidity and nutritional status of primary school children. The research design was a cross sectional, and subjects were 88 children of 5 th grade students (10-12 years old). The habit of eating snacks was collected through Food Recall 2x24hours. The results showed that most students had a good level of nutrition knowledge category (54.5%), and as many as 78.6% of food vendors had relatively less knowledge about nutrition. A total of 53.4% of students classified as frequent snacks. Most students had a normal nutritional status 67.0% with low morbidity category (44.3%) and moderate (35.2%). Based on Pearson correlation test there was no significant relationship between knowledge of nutrition and food security pocket with frequency (p=0766 ; r=-0032) and the showed that number of snacks (p=0.253 ; r=-0123). Spearman correlation test results there was a significant relationship between knowledge of nutrition and food security and nutritional status (p=0.039 ; r=0.221). There was a significant relationship between energy snacks consumption and nutritional status (p=0.038 ; r=0.614) and morbidity status (p=0.040 ; r=0.714). There was a significant relationship between protein snacks consumption and nutritional status (p=0.041 ; r=0.525) and morbidity status (p=0.036 ; r=0.308).
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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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