Judul: Prime Commodity Determination of Papua Barat Agribusiness Development.
Abstrak: Agriculture resources of Papua Barat should be exerted effectively to boost the regional economy. Prime commodity based agribusiness development is one of many approaches that can be used to improve the Papua Barat competitiveness. The aim of this study were to determine the Papua Barat prime commodity and its production area, and establish a recommendation on Papua Barat agribusiness development. Analytical Hierarchy Process (AHP) was used to prioritizing the commodity from each of four sectors that were planned to be developed: crops, horticulture, estate and livestock. The criteria used were agro-ecosystem suitability (sub-criteria: productivity, production and its tren), economic factors (income, feasibility, trade and processing industry avaibility) and regional carrying capacity (capital, market, technology, human resources, institution, facilities and government policy). The AHP showed that for the crop sector, the prime commodities are paddy (0,219), sweet potato (0,184) and peanut (0,165) respectively. Though in term of agro-ecosystem suitability paddy has the lowest weight (0,105), but paddy become the prime commodity since it has the highest weight of economic factor 0,333 and regional carrying capacity weight 0,218. Considering the agro-acosystem, then Manokwari and Sorong can be recommended as main paddy production area in Papua Barat. The same area can be projected as a main production area for sweet potato as well, which become the second prime commodity as its economic weight 0,256 and agro-ecosystem suitability weight is 0.184. Meanwhile, the third prime commodity, peanut, should be produced in Manokwari and Teluk Bintuni. The prime commodity for horticulture sector are legume (0,165), tomato (0,146), and chili (0,138). Legume become the prime commodity since it has the highest weight of agro-ecosystem suitability 0,289 and economic factor weight 0,175. Tomato become the second prime commodity as its economic weight 0,264 and regional carrying capacity weight 0,114. The third prime commodity are chili has the highest weight of economic factor 0,175 and regional carrying capacity weight 0,124. Teluk Bintuni Regency can be recommended as main horticulture production area in Papua Barat. The prime commodities for estate are nutmeg (0,306), palm oil (0,293), and cocoa (0,275). Nutmeg become the prime commodity since it has the highest weight of economic factor 0,376, agro-ecosystem factor 0,371 and regional carrying capacity with lowest weight 0,184. Considering the agro-acosystem, then Fak-fak can be recommended as main nutmeg production area in Papua Barat. Palm oil become the second prime commodity as its agro-ecosystem weight 0,264, regional carrying capacity weight 0,252 and economic factor 0,192. The main production area for palm oil in Sorong. Meanwhile, the third prime commodity, cocoa, should be produced in Raja Ampat. The prime commodities for livestock are pig (0,309), cattle (0,191) and chicken (0,184). Pig and cattle become the prime commodity since it has the highest weight of agro-ecosystem, economic factor and regional carrying capacity with lowest weight. Differently with two categories above, chicken has the highest weight of economic factor (0,260) and regional carrying capacity (0,251) and agro-ecosystem (0,110). Considering the agro-acosystem, then Kaimana can be recommended as main pig and chicken production area and Fak-Fak for cattle production area in Papua Barat. Agribusiness development in West Papua
Keyword: Prime commodity, main production area, agribusiness, Papua Barat

Judul: Arahan pengembangan kawasan usaha agro terpadu berbasis komoditas kelapa di Kabupaten Lampung Barat
Abstrak: West Lampung Regency has a great potency in agricultural sector. The dominant commodities which developed by the people were: coffee, pepper, clove, oil palm and coconut. The value added of whole products are very low because there are no agroindustries. So that the regency government will build the integrated agribusiness area development based on coconut commodity. The pusposes of the research were: 1) to identify the potential location, 2)to identify the prospective products, 3)to identify the public opinion, 4) to identify the prospect of market and 5) arrange the direction of development. The research was conducted in coastal district of West Lampung Regency on January-Marh 2008. This study used Scalogram, LQ, Land suitability Analysis. The results of those analysis were overlaid to find the alternative location. The choosing of prospective products using Analytical Hierrarchy Process (AHP) with expert respondent on coconut agoindustry. Chain of marketing, Industrial Tree, and Trend Analysis were used to describe the market prospect of coconut products. The result showed that there are 3 potential locations, group of villages Biha, Marang, Sumber Agung, and Negeri Ratu Ngambur, group of villages Way Redak, Kampung Jawa, Pasar Krui, Seray, and Walur, and The Third alternative : group of villages Pardasuka, Pagar Bukit dan Sukanegara. Coconut Oil and Dessicated Coconut were the first and second prospective products. Another prospective produtcs were Carbon Active Coco Milk and Coir Fiber. There are 3 level of collecting traders from village, district until sending trader, and the sending trader enjoyed the biggest profit. Projection trend showed, that export tend to increase. Public perception (farmers and traders) showed that farmers in district of Bengkunat, Pesisir Selatan, Pesisir Tengah and Karya Penggawa know better about (Kawasan Usaha Agro Terpadu ) KUAT program than Pesisir Utara and Lemong district. It was caused by the distant of location and the infrastructure. The direction of development based on 3 alternative location, choosen product which requires tight quality handled by KUAT Management, on the other hand the side products are handled by farmers/group of farmer. All the activities are designed in a cluster which including many stakeholders participation.
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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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