Judul: Manajemen Penunasan Kelapa Sawit (Elaeis guineensis Jacq.) DI Kebun Adolina PTPN IV, Serdang Bedagai, Sumatera Utara
Abstrak: This internship activities were carried out at the Adolina Plantation, PTPN IV, Serdang Bedagai, North Sumatera from February 2014 until June 2014. Internship activity aims to improve knowledge, skills and competence in field work and management, specially on prunning. Observations were conducted on the system and technique of prunning the number of retained leaf frond, number of male and, female flowers, and bunches of fruit per palm and prunning payment system. Data processing method used is quantitative statistical analysis, qualitative analysis and descriptive analysis according to the characteristics of the data obtained, and the results will be compared with literature and standard operational procedure (SOP) of the company. The sprouting adopted by the employee is not in accordance with Gardens Adolina PTPN IV’s SOP. Pruning of 6 months rotation is the main cause of difficulty to achieve an appropriate number of fronds aceordy to company’s SOP. Intensive training for the workers are needed. In addition pruning technique should be applied based on the number of retained fronds on the palm
Keyword: Bogor Agricultural University (IPB), Prunning, Oil Palm, Frond Management,

Judul: Manajemen Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Adolina PTPN IV Persero, Serdang Bedagai, Sumatera Utara
Abstrak: Internship program provides knowledge and skills in aspects agronomy of oil palm, both technical and managerial. This internship activities were started from February 2014 to June 2014 at Adolina Estate PTPN IV Persero, Serdang Bedagai, North Sumatera. Intership activities included, worker in the field as laborer, as supervisor and field manager. Management of harvesting included harvester, harvest capacity, harvest quality, and production as well as productivity of the palm. Secondary data were collected form literature and field devision archives such as monthly and annuals reports, as well as documentation of the field activities. Generally the needs of the harvester in Adolina Estate has been sufficient, but the quality and capacity of the harvest still low. Ripe fruits were not harvested and there were still many loosed fruits which has not been collected in the field. The production and productivity of palm per year of transplanting is not based on target. Better quality harvester and more intensive control by supervisor will improve quality and quantity of harvest.
Keyword: Bogor Agricultural University (IPB), oil palm., harvest management, Adolina Estate

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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