Judul: “Persepsi Petani terhadap Kompetensi Penyuluh Pertanian Lapangan di Kecamatan Pontang, Kabupaten Serang, Provinsi Banten”.
Abstrak: Serang District has approximately 60 % of the population as small-holder farmers. This condition has a great potential for agricultural development. Up to now, farmers in some areas find limited access to extension services. This is due to lack number of extension workers and quality of agricultural extension workers that are needed by the farmers. The Act No. 16/2006 about System of Extension in Agriculture, Fishery, and Forestry states that the competency of extension workers is important The objectives of the research were: (i) to describe the farmer’s perception on the extension worker competence, and (ii) to describe the relationship between the personal and farming characteristics and quality of extension activities with their perception about the competence of extension worker. This research was conducted with the survey methods and observations in the two Pontang subdistrict, including Pulokencana dan Sukanegara. The 60 farmer samples were randomly selected as respondents. The data were analyzed through Spearman rank correlation test. . The result showed a correlation between participation in training were significantly correlated with the perception of the competence of extension worker. There was also a significant correlation between the perception of extension activity quality (intensity, materials, and methods) with the farmer’s perceptions of the competence of extension worker
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Judul: Tingkat Partisipasi dan Kemandirian Petani Alumni Sekolah Lapangan Pengelolaan Tanaman Terpadu (Kasus Desa Kebon Pedes, Kecamatan Kebon Pedes, Kabupaten Sukabumi, Provinsi Jawa Barat)
Abstrak: Agriculture development approach carried out centrally and top down. Failure in reaching development agriculture efforts, made the expert at that time said it was very important to change paradigm of agriculture development to sustainable bottom up approach. Field School (SL-PTT) is as a part of agriculture extension activities, is pointed to empower the farmers, it is one of the way to reach development agriculture point, so it has been more interesting to learn as far. The aim of the present research was to analyse correlation farmer empowerment model of SL-PTT with level of participation and autonomy. This research used quantitative method and was supported with qualitative data. The quantitative data were collected by using survey method on 42 farmers participant of SL-PTT. The respondents were selected by applying a stratified random sampling method. In other hand, the qualitative data were collected with in-dept interview. The results show that activity of SL-PTT had a significant correlation with level participation and autonomy farmers. Most farmers were in middle participation level and autonomy.
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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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