Judul: Pengaruh Kerusakan Buah Kelapa Sawit terhadap Kandungan Free Fatty Acid dan Rendemen CPO di Kebun Talisayan 1 Berau
Abstrak: The objective of this internship specifically was to study the factors that affect the quality of CPO. The internship was conducted in Talisayan 1 Estate PT Tanjung Buyu Perkasa Plantation, Berau, East Kalimantan from February to June 2013. Problem analysis using Ishikawa diagram and linear regression by making poor quality fruit, fruit “restan” (leftover), injury fruit, and the loss of crops as factors that cause of problems, both the activity of harvesting until transporting the yields. The analysis show that CPO degradation probelms one of which can be seen from the low rendement of palm oil (CPO) and high Free Fatty Acid (FFA) CPO. Low oilrendementcausedbypoorfruit qualityandyieldloss. High FFA CPO causedbypoorqualityfruit, leftoverfruit, andfruitinjury.
Keyword: rendement, palm oil, harvest, FFA, CPO

Judul: Analisis Produksi Kelapa Sawit ( Elaeis guineensis Jacq.) di Kebun Buatan PT Inti Indosawit Subur, Kabupaten Pelalawan, Provinsi Riau
Abstrak: The internship program has been conducted at PT. Inti Indosawit Subur, Buatan Estate, Pelalawan, Riau from February 13 to May 13 2012. The purpose of this internship program is to learn oil palm cultivation and specifically analyzes the factors that influence the production of palm oil. The data to be collected consist of primary and secondary data. Buatan 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 double linear regression analysis, FFB (Fresh Fruit Bunch) production is influenced by the number of harvesting working days and the amount of harvester output. The coefficient of determination (R2) generated that variables of FFB production as dependent variable can be describe by the independent variables (harvesting working days, amount of harvester output and rainfall) for 98.3%. The main problem is the decrease in crop productivity for plants older than 22 years as the age of the plant is already above the maximum age of the average productivity of oil palm.
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Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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