Judul: Simulation Model for Tuna and  Shrimp Production in Indonesia
Abstrak: This research was conducted from April 2004 – January 2005 in bogor, West Java – Indonesia. The area of study is the Sea Waters at Indonesia especially on the Region Management of Fisheries of Indonesia. The General objective of the research area : 1. To recommendation a strategy of Indonesia to release commerce issue of marine fish product in facing up the international forum, 2. To estimation of Indonesian position in related to free trade issue in the sector of marine fisheries. The input data are collected from various source among other 1. the Ministry of Marine affairs and Fisheries of Indonesia. 2. Statistics Indonesia of The Republic of Indonesia (BPS), 3. Center for Oceanography Research of The Indonesian Institute of Science ( P2O LIPI) and others. The analysis method used the simulation model by Dynamic modeling where we focusing on sub model such as Buffer Stock, Production, Exploitation, demand and Supply. Also the Method for the research of Simulation model for Tuna and Shrimp production in Indonesia are several aspects that is from research of natural growth of fish population ( Tuna and Shrimp) natural added from illegal fishing influencing with growth of fish resources (Tuna). Later; Then from fish resource population ( Stock of Fish resource) existing this hence seen ability of Tuna and Shrimp production and related ability of effort capturing of fish resources ( Catch Per Effort Unit) in tuna production and Shrimp. As for the Fish Resource concern of ability of fish production is very influence by capacities of Maximum Sustainable Yield in each of Fish resources (Tuna and Shrimp) making this Maximum Sustainable Yield is limitation of Exploitation of Fish resources. Henceforth model will be tried validation model to see how accurate of itself model in simulation. And in the end will be seen how big and make everlasting him exploit fish resources related to Maximum Sustainable Yield between Exporting and Import. To see the mention of Simulation model than some scenario alternative those are scenario by 1.) Condition of existing where each the variable of relating with the data existing data of this matter was we assume as scenario which still moderate; 2.) Condition where the output is productivity become the target of maximally assigned value for Maximum Sustainable Yield most optimum tolerance range; 3.) Related with the conservation concept where expected for the fisheries resource remain to make Sustainable but the production output of seen did not maximum. From third scenario expected for the exploitation of fisheries resource (Tuna and Shrimp), projection supported policy of exploitation of fisheries resources which with vision of development of have continuance, where exploited fish resources still sustainable to the continuity of and existence of fisheries resources itself.
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Judul: Simulation model for tuna and shrimp production in Indonesia
Abstrak: The General objective of the research area : I. To recommendation a strategy of Indonesia to release commerce issue of marine fish product in facing up the international forum, 2. To estimation of Indonesian position in related to free trade issue in the sector of marine fisheries. The input data are collected from various source among other 1. the Ministry of Marine affairs and Fisheries of Indonesia 2. Statistics Indonesia of The Republic of Indonesia (BPS), 3. Center for Oceanography Research of The Indonesian Institute of Science ( P20 LIPI) and others
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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