Judul: Pengelolaan Kelapa Sawit (Elaeis guineensis Jacq.) dengan Aspek Khusus Pemanenan di Kebun Sei Batang Ulak PT Ciliandra Perkasa Kampar Riau
Abstrak: Palm management thesis was carried out to study the cultivation of palm oil in general, in particular to understand the various aspects and factors which support the process of harvesting of oil palm. Thesis (internships) in palm oil plantations, PT Ciliandra Perkasa, First Resources Ltd., village Siabu, district of Kampar regency, Salo, Riau Province, during a four month is the month of February to June 2013. This thesis Plantations underway in using direct and indirect methods. The direct method is used to collect data and information with the interview. The indirect method is a method used to acquire secondary data from the plantations. Results of the analysis of several factors that support the harvesting on afdeling V in general have shown good results. These factors include the harvest criteria with an average of 2 kg-1 item, total harvest labor has labor needs afdeling, 6/7 harvest rotation, and efficiency of harvest showed good results with efficiency >95%. However, the value of the number density of crops still under 15% with an average of 11.77% and the supervision and monitoring of the quality of hanca still less than optimal. Results of comparative analysis of some variables between afdeling I and V differ markedly on the production of fresh fruit bunches of 1485.8 kg/ha (afdeling I) and 1011.7 kg/ha (afdeling V), fruit off 165.5 kg/ha (afdeling I) and 45.5 kg/ha (afdeling V), weight per bunch 11.0 kg/ha (afdeling I) and 13.8 kg/ha (afdeling V), oil production 1651.4 kg/ha (afdeling I) and 1084.9 kg/ha (afdeling V) achievements of kg 1608.7 kg/ha (afdeling I) and 1288.2 kg/ha (afdeling V), and the achievements of ha 3.2 ha/person (afdeling I) 4.8 ha/person (afdeling V) however did not differ markedly on the number of trees, number of bunches of tree, bunches and bunches of accomplishment. It shows that the afdeling I better compared to the comparison of afdeling V based on the topographic form afdeling I flat to wavy and bumpy and hilly afdeling V.
Keyword: topography, efficiency harvesting factors, harvest

Judul: Manajemen Pemanenan Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Sei Batang Ulak, PT Ciliandra Perkasa, Riau
Abstrak: The internship program was conducted in Sei Batang Ulak Plantation, PT. Ciliandra Perkasa, Kampar, Riau from Februari to June 2013. This program was aimed to improve knowledge and field work skill, and also to understand the harvest aspect of oil palm on technical and managerial aspect. Harvest planning must be conducted well and precisely to gain optimal crop production. Some problems related with harvesting such as harvest planning, harvest density, harvest rotation, and under or over ripe of harvesting bunch fruit. An inaccurate harvest planning could cause unsuitable result between the prediction and the realization, and the use of harvesters must be suited with fruit condition in the field. Condition of less harvest density that was caused by the lack of ripe fruit, could imply the harvest rotation to be shorter. Shorter rotation could increase the losses during harvest and many of harvesters cut under ripe fruit to meet the standard basis of harvest of 900 kg and harvesting area could also become larger through the time.
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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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