Judul: Analisis Sikap, Kepuasan dan Loyalitas Petani terhadap Penggunaan Benih Unggul Jagung Komposit di Sulawesi Selatan
Abstrak: Corn is a strategic commodity in developing agriculture in Indonesia. Increasing national corn production could be achieved by increasing productivity, planting area and use of high yielding varieties. Seed producers are expected to provide seeds of varieties that meet the needs and preferences of farmers. The main factor to be considered in the development of corn high yielding varieties is farmers preference to select and use the appropriate seeds. The use of composite corn seed is an alternative way to increase corn production in South Sulawesi. The purpose of this study are: 1) identify the characteristics, attitudes and behaviours of farmers toward the use of corn seed, 2) analyze the latent variable and dominant indicator variable in building farmers satisfaction and loyalty, and 3) analyze the relationship between farmers satisfaction and loyalty in using composite corn seed. Type of data collected is primary data obtained by survey method using questionnaires. The respondents of this study are 40 corn farmers (ever use local, composite and hybrid corn). Data are analyzed with Fishbein multi attributes approach to determine farmer’s attitude. The other 120 farmers who use composite corn seeds are taken and analyzed using Structural Equation Modeling (SEM) approach to determine relationship between satisfaction and loyalty. The results show that farmer’s attitudes toward composite corn seed tend to be better than those to hybrid corn seed and local corn seed. Based on the SEM analysis, satisfaction variables have relationship with farmers loyalty in the use of composite corn seed in South Sulawesi.
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Judul: Analisis Sikap, Kepuasan, dan Loyaltas Petani Terhadap Benih Jagung Hibrida Bisi-2 di Desa Gadu Barat, Kecamatan Ganding, Kabupaten Sumenep
Abstrak: This study aimed to identify the characteristics, the purchase decision process, attitude, satisfaction, and loyalty of farmers in the village use the corn seed hybrid Bisi-2 in the West Gadu. This study used a descriptive analysis method, multiatribut Fishbein, Customer Satisfaction Index (CSI), Importance Performance Analysis (IPA) and loyalty pyramid. The results of the characteristics of farmers sex male, 60-69 years old, married, primary school education level, corn farming as the main occupation, with the motivation to make a profit with high yields, Fishbein multiatribut analysis showed hybrid corn seed Bisi-2 more preferably from corn seeds P2 and guluk -guluk. Results of Customer Satisfaction Index (CSI) on hybrid corn seed Bisi-2 are satisfied by 72 percent. The results of the analysis of customer loyalty on corn seed Bisi-2 are included in the loyal category.
Keyword: satisfaction, loyalty, customer, corn, attitude

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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