Judul: Faktor-Faktor yang Berhubungan dengan Kebiasaan Masyarakat Makan Oyek (Manihot utilissima) Sebagai Bahan Campuran Nasi (Kasus di Kecamatan Sruweng Kabupaten Kebumen Jawa Tengah)
Abstrak: Salah satu alternatif untuk meningkatkan kecukupan pangan bagi masyarakat, adalah dengan program ketahanan pangan. Program ketahanan pangan diarahkan pada pengembangan pangan alternatif agar masyarakat tidak tergantung pada beras, tetapi dapat mengembangkan pangan alternatif yang sudah banyak ditinggalkan oleh masyarakat. Pengembangan sumber pangan alternatif dimaksudkan untuk mengubah pola komsumsi masyarakat yang sampai saat ini masih memiliki ketergantungan pada komoditi beras. Salah satu usaha yang dapat dilakukan adalah diversifikasi makanan pokok. Upaya diversifikasi pangan diarahkan pada peningkatan status gizi dan kesehatan masyarakat dan dimaksudkan untuk menjamin ketersediaan sumber pangan non beras pada masyarakat. Sumber pangan non beras dengan harga yang lebih murah disbanding beras dan terjangkau oleh daya beli masyarakat Indonesia merupakan strategi untuk mewujudkan ketahanan pangan masyarakat. Diversifikasi pangan diperlukan agar masyarakat memiliki sumber pangan alternatif pengganti beras sehingga ketahanan pangan masyarakat dapat terjaga.
Keyword: 

Judul: Sikap dan Perilaku Konsumsi Masyarakat terhadap Beras Padi (Oryza sativa) dan Beras Singkong (Manihot esculenta) sebagai Bahan Pangan Pokok (Kasus Masyarakat Kampung Cireundeu, Kelurahan Leuwigajah, Kecamatan Cimahi Selatan, Kota Cimahi, Provinsi Jawa Barat
Abstrak: Indonesia has a high proportion of household, which have deficit food energy in every provinces, that is why diversification is needed, even become one of the main pillars in achieving the food security. However, in fact, Indonesian people are still depended on the rice paddy. Changing people's behavior in consuming the rice paddy is not easy, it is needed to learn first about how people's attitudes towards staple’s food of the rice paddy and the non rice paddy. That is because the attitudes can influence behavior. This study investigated the attitude and consumption behavior of Cireundeu Village community between the rice paddy and rice cassava. Some people of Cireundeu village have been consumed rice cassava as their staple food. Based on those case, people’s attitudes and consumption behavior can be interesting to be used as the implementation learning of food security or food diversification in other areas. The method used in this study are quantitative and supported by qualitative data. Quantitative data collected by interviewing peoples with questionnaires. The results of this study indicated that the group of respondents that consume rice paddy tended to have a positive attitude towards the rice paddy and a neutral attitude towards rice cassava. While the group of respondents who consume rice cassava and the group of respondents who consume both staple food have a tendency to a neutral attitude to both. However, attitudes toward food staples did not correlate consumption behavior, that’s meaning attitude did not determine the consumption behavior.
Keyword: 

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.
Keyword: