Judul: Persepsi Orang Tua dan Guru Terhadap Keamanan Pangan Jajanan Anak Sekolah Dasar Di Kota Bogor
Abstrak: Anak sekolah dasar merupakan objek yang sangat rentan terhadap penyakit yang ditimbulkan oleh pangan jajanan. Kebiasaan jajan pada anak sangat erat hubungannya dengan kehidupan ekonomi dan kebiasaan makan yang terdapat di lingkungan keluarga. Untuk itu perlu peran orang tua, terutama ibu rumah tangga sebagai penjaga gerbang (gate keeper) yang bertanggung jawab dalam pemilihan dan persiapan hidangan bagi seluruh keluarga (Engel et al., 1994). Selain itu, peran guru tidak dapat dihilangkan. Guru sebagai panutan bagi siswa sekolah diharapkan dapat berperan dalam pengawasan terhadap keamanan pangan jajanan, khususnya yang terdapat di sekolah, baik di kantin sekolah maupun di sekitar sekolah. Penelitian ini bertujuan untuk mengetahui persepsi orang tua dan guru terhadap keamanan pangan jajanan anak sekolah sebagai dasar pengembangan strategi untuk memasyarakatkan pengetahuan keamanan pangan bagi orang tua dan guru sehingga orang tua dan guru dapat berkontribusi lebih maksimal terhadap keamanan pangan jajanan di sekolah. Dalam penelitian ini, pengambilan sampel dilakukan terhadap ibu rumah tangga dan guru yang jumlahnya dihitung dengan menggunakan rumus Slovin (Simamora, 2002).
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Judul: Hubungan antara pengetahuan gizi dengan persepsi mengenai keamanan pangan jajanan pada guru SD di Bogor
Abstrak: The general objective of this study was to investige nutritional knowledge and perception about food safety of teacher elementry school in Bogor. The research was conducted using a cross sectional study. The number of samples for each region was 23, sample was selected purposively. The percentage of nutritional knowledge level was 65.2% in rural area and 87% in urban area. The percentage of food safety knowledge level was 69.6% in rural area and 69.6% in urban area. The percentage of perception about food safety level was 78.3% in rural area and 95.7% in urban area. The result of independent sample t-test toward characteristic sample, nutritional knowledge, food safety knowledge, and perception about food safety indicate there was no difference (p>0.05) beetwen rural area and urban area, but there was a few characteristic sample which indicate there was a real difference (p<0.05) beetwen rural area and urban area.The result of correlation spearman test indicate there was no significant correlation (p>0.05) beetween characteristic samples with nutritional knowledge, except one characteristic sample that was training/meeting about nutrition indicate there was significant correlation with nutritional knowledge (p<0.05). The result of correlation spearman test indicate there was no significan correlation (p>0.05) beetwen characteristic sample with food safety knowledge. The result of correlation spearman test indicate there was no significant correlation (p>0.05) beetwen nutritional knowledge with food safety knowledge, nutritional knowledge with perception about food safety, and food safety knowledge with perception about food safety.
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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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