Judul: Pemanenan Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Dolok Ilir, PTP Nusantara IV, Medan, Sumatera Utara.
Abstrak: The internship program has been conducted at PTP Nusantara IV, Dolok Ilir Estate, Medan, Sumatera Utara from February 13 to May 13 2012. The purpose of this internship program is to learn oil palm cultivation and specifically to analyzes the factors that influence the production of palm oil. The data that has been collected consist of primary and secondary data. Dolok Ilir Estate generally have applied the technique of oil palm cultivation in accordance with standard operating procedures that have been established by the company. Based on the regression equation using the least squares method, the production of FFB (fresh fruit bunches) are not affected by the rate of decline in the number of stands. The coefficient of P-value generated in the analysis was 87.4%. The main problem is the loss of crop harvest that affecting the production of palm oil.
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Judul: Manajemen Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Adolina, PT Perkebunan Nusantara IV, Serdang Bedagai, Sumatera Utara.
Abstrak: Internship aims to improve the ability and comprehension in the management of oil palm plantation. Internship implemented in Adolina Estate, PTPN IV. In the implementation of internship, harvest management in the oil palm harvesting was accentuated to observed and studied. Observation in harvest management consists of harvest rotation, harvest density, assessed daily production, harvester requirements, criteria of ripe harvest, harvester capacity, quality fruit, and transporting the fruit to oil palm mill. Data from observation were analyzed quantitatively using the average, percentage, and standard deviation (descriptive statistics) as well as the t-student test (comparison). The results from analyzed showed that harvest management of oil palm in Adolina Estate need to be improved. It is due to harvester capacity is lower of standard company and the high production percentage of fruits have not quality. The low capacity of harvesters affect the calculation of harvester requirements and disruption of harvest rotation. Harvest rotation is disturbed affect the high production percentage of fruits have not quality. Adolina Estate has implemented assessed harvest density quite accurately to the realization of the harvest density. The accuracy of the assessed harvest density to realization of harvest density affect the accuracy of the assessed daily production as well as calculation of harvester requirements and transport harvest.
Keyword: harvester capacity, harvest management, oil palm, harvester

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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