Judul: Studi Pengembangan Usaha Kecil Kayu Manis, di Kabupaten Kerinci, Propinsi Jambi
Abstrak: Due to its flavour and taste, Cinnamomum burmanii become the most market prefer type of cinnamon. Indonesia known as the biggest Cinnamomum burmanii producer, however because of low quality product, Indonesia can only covers 27% international market demand. This study consisted of developing a strategy to develop small scale cinnamon enterprise designed to increasing Indonesia cinnamon quality which directly increase farmer's income. After marketing system identification, supporting arid-inhibiting factor identification of small scale enterprise development, and feasibility analysis of small scale enterprise development, were done, then strategy of small scale cinnamon enterprise was being formatted.
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Judul: Regional leakage in community cinnamon commodity agribusiness system and its impact on regional economy: case in Kerinci Regency of Jambi Province
Abstrak: Cinnamon is one of national export commodities which has placed Indonesia as the world’s biggest exporter. Its existence is a source of income in society, source of foreign exchange and the country of employment. Development problem is the low price at the level of farmer’s, affecting the farmers cut off all the trees without effort to manage the plants, and it makes the productivity decrease. In general, the purpose of this research is to analyze the regional leakage in community cinnamon commodity agribusiness system and its impact on regional economy, cases in Kerinci Regency of Jambi Province. The specific purposes are; (1) to analyze cinnamon commodity agribusiness system development (2) to analyze the integration of cinnamon price in farmers and exporter, the competitiveness of cinnamon in international market; and the cinnamon demand in international market; (3) to analyze the contribution the cinnamon to the economy of Kerinci Regency; (4) to analyze regional leakage potential and implication the cinnamon sector to regional economy. The research uses the following model: descriptive, input-output (I-O), econometrics and constant market share (CMS). The research showed that: (1) The cinnamon commodity agribusiness system had inefficiency development system; (2) The cinnamon exporter price was integrated 40% to farmers’ price. The Indonesian cinnamon competitiveness is lower than China’s. The Indonesian cinnamon demand is significantly influenced by the price, economic growth (GDP), and real exchange rate; (3) The cinnamon had an important role in regional economy of Kerinci Regency; (4) The cinnamon had regional leakage potential and its implication to regional economics. To develop cinnamon sector there are several strategies: Develop the agro industry processing, the tree structure industry, the competitiveness, marketing, the farmer’s institution, and government policy.
Keyword: price integration, export competitiveness, agroindustri processing, farmers's institution, government policy

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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