Judul: Optimalisasi produksi karet olahan di PTPN VIII Kebun Jalupang Subang
Abstrak: Jalupang garden which is one of the business units of PTPN VIII. By using a linear program LINDO, this study was conducted to analyze the combination of processed rubber production in Gardens Jalupang that companies analyze the allocation of the use of inputs / resources on Jalupang Gardens in order to achieve optimal conditions. In the period of one year (May 2011-April 2012), Gardens Jalupang able to obtain optimum reception at the value of Rp 76,364,690,000.00. Meanwhile, the actual receipt is Rp 81,906,284,918.00 with dry rubber processed products as RSS as 2.17928 million Kilograms Dry Rubber (77.1%) and as many as 646 441 Kilograms Concentrated Latex Rubber Dry (22.9%). Then the results of the analysis indicate that the Resource Status of the limiting resource is Taksasi Latek Concentrated (LP). and Labor is not a limiting resource and reduction of as much as 20% of raw materials will greatly affect the amount of processed rubber production in Jalupang Gardens
Keyword: Bogor Agricultural University (IPB), Concentrated Latex, RSS, Rubber Processing, Optimization of Production

Judul: Peningkatan Produktivitas Proses Budidaya Karet Alam dengan Pendekatan Green Productivity (Studi Kasus di PT. XYZ)
Abstrak: Indonesia is the second largest natural rubber producer in the world, with 28% of the total world production in 2010. In line with the growth of the world's automotive industry, the needs of rubber as a complementary synthetic rubber products will also increase. The main objective this research was to find the best alternative strategy to increase the productivity of the natural bber plantations through the green productivity (GP) approach. The case study was conducted at PT. XYZ, a private company which runs in the plantation and processing of natural rubber usinesses. The material flow analysis was performed by using green stream map to analyze the seven Treen wastes. The best alternative strategy was determined by using of AHP model and several design Improvements scenario. The measurement of the alternative strategy performance was rated as the ture GPI and compared with the value of current GPI, which had been calculated on a case study hat was done. The results of this research will be able to provide the best improvement productivity rategy, the level of company's productivity which has been achived, and the productivity levels of The implementation strategy chosen.
Keyword: AHP, Green productivity, Green stream map, Green wastes, Natural rubber, Latex

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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