Judul: Analisis Risiko Pasca Panen Tandan Buah Segar (TBS) kelapa sawit (Kasus : Desa Tanah Datar Kecamatan Kunto Darussalam Kabupaten Rokan Hulu Provinsi RIAU)
Abstrak: Tanah Datar village is one of the centers of oil palm plantations in the Rokan Hulu Regency of Riau Province. Palm oil production generated by farmers is the fresh fruit bunches (FFB). On the post-harvest process oil palm FFB has several stages that must be traversed, from FFB are on land to palm oil factory. Production of FFB produced by farmers less than the maximum, due to loss of production results in every phase of post harvest oil palm. The purpose of this research is to know the result of large production loss and analyze the impacts of lost production at every stage of the FFB post harvest oil. Analysis of the results obtained shows that the loss of production result in the FFB land, on checking process FFB raw, FFB in TPH, and sorting plant. As for the large percentage of total production loss of production of FFB produced amounted to 1.70 percent at the land, 0.51 percent on the process of checking the FFB raw, 0.27 percent when FFB in TPH and 2.70 percent at sorting plant. The impact of the losses arising from the loss of post-harvest TBS in total per two hectares of land is Rp 412 265.14 per month and if combined for one year will reach Rp 4 946 486.88.
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Judul: Analisis faktor penentu produksi  Tandan Buah Segar (TBS) tanaman kelapa sawit  (Elaeis guineensis jacq.) di Sungai Bahaur Estate (SBHE), PT Bumitama Gunajaya Agro (PT BGA), Wilayah VIMetro Cempaga, Kotawaringin Timur,  Kalimantan Tengah
Abstrak: The internship started from February 14th to June 14th 2011. The aim of this internship is to find out and analyze about the effect determinant fresh fruit bunch (FBB production factors) of palm oil (Elaeis Guineensis Jacq.) in SHBE, PT Bunitama Gunajaya Agro, Central Borneo. Data used for this internship is time series data from 2008-2010. Independent variable is FFB production. The data were gained primary data (direct method) and secondary data (indirect method). it used two different method. Cobb-Douglas method with double linear regression analysis equation and t-test method. The double linear regression analysis result shows that the variables of employees has positive and very significant effect, variable of fertilizer has negative and is not significant effect, and variable of rainfall has positive effect is not significant towards the palm production. The t-test results shows that ages of plants, SPH and topography has significant toward the palm production. \the coefficient determining (R2) test result shows that the FFB production as dependent variable can be describe by the independent variables (fertilizer, rainfall and employees) for 98.2 %.
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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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