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: Perilaku Penjaja Pangan Jajanan Anak Sekolah Tentang Gizi Dan Keamanan Pangan Di Lingkungan Sekolah Dasar Kota Dan Kabupaten Bogor
Abstrak: The purposes of this research are to identify and to analyze the view of snack hawker for students about nutrition and food safety at the elementary school environment in the Bogor city and Bogor District. The design is a cross-sectional study. The subjects of this research are 47 snack hawkers for students around the Bogor City Bogor District whom are picked by the purposive sampling method. Descriptive statistical method is used to process all the data. The subjects are dominated by man (72.3%) and about 68.1% of them are in the early-adult age (18 – 40). Most of the subjects are elementary school graduated and at the same percentage of it, subjects are not poor. Most of them has been doing this job for about 1- 5 years (44.7%) and 90% of all the subjects received nutrition and food safety information from television. As the result of it, 68.0% of the subject’s lack of knowledge about nutrition and food safety and 40.4% of them had quite good knowledge about it. There are no significant differentiation about knowledge of nutrition and food safety between the subjects which had been classified by area, accreditation status. About 48.9% of subjects lack of nutritional behavior and 53.2% of them had a quite good behavior for food safety. Subject’s behavior about nutrition and food safety had no significant differentiation which had been classified by area, accreditation status. Among all of the subjects, only 6.4% of them applying a good hygiene practice on the food and drink preparation, also on the food service. About 44.7% of subject did not apply a good hygiene practice on preparing and handling food/drink, and also 42.5% of them are not applying good pest control, sanitation of food preparation area and lack of tools. There are no significant differentiation between subjects which had been classified by area, accreditation status and seller group (p<0.05) about applying good food safety. Only 44.6% of subjects who admit using food additive, 61.9% of them get the food additive from local grocery store and 66.7% of them admit using flavoring additive. Pearson’s correlative test shows that there is a positive correlation between nutrition knowledge and nutrition behavior (r=0.645**; p<0.05) and also between food safety knowledge and food safety behavior (r=0.454; p<0.05), but there are no signifficance correlation between the nutrition and food safety knowledge/behavior with the practice and also no signifficance correlation between the access of nutrition and food safety information with the practice of nutrition and 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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