Judul: Premium Determination on Bonus Malus System Using Mixed Poisson Distribution.
Abstrak: Bonus malus system is an insurance system that conciders classes of premium division. Its premium depends on the number of claims that are proposed by policyholder each year. Therefore, the rate of premium on current year is determined by the number of claims which were made on previous year. This paper studies determination methods of insurance premium with bonus malus system using mixed Poisson distribution. Further, it also studies construction of a bonus malus table using the net premium principle (principle of zero utility) on mixed Poisson distribution. There are two cases in determining the premium estimates using mixed Poisson distribution, i.e. the parametric and non-parametric estimation. Determination of the best premium on parametric estimation can be made using Hofmann distribution. Determining the best premium with nonparametric estimation can be made using different parameters on the three groups of risk. The nonparametric case is better than the parametric case in context of goodness of fit test. The best distribution of both estimation cases are then used to construct the best optimal bonus malus table and a bonus malus table for weighted premium. In this case, the parametric estimation fits better than the nonparametric estimation.
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Judul: Sistem Bonus Malus dengan Frekuensi Klaim Berdistribusi Geometrik dan Ukuran Klaim Berdistribusi Weibull
Abstrak: Bonus-Malus system is one of systems implemented by an insurance in calculating the risk premium based on claim history from each policyholder. In this work we discussed two different types of Bonus-Malus system namely the classical Bonus-Malus system and the optimal Bonus-Malus systems. The classical Bonus-Malus system sets the risk premium by taking into account only the number of accidents of each policyholder. While the optimal Bonus-Malus system sets the risk premium by taking into account both the frequency and the severity of the claims of each policyholder. Both of the Bonus-Malus systems are then compared, with the number and size of the claims and insured persons are assumed to follow respectively a geometric and a Weibull distributions. The risks faced by each policyholder are different such that the number and size of the claims experienced by each policyholder are also different. Fu r t h e rmo r e , posterior distribution o f severity and frequency claim parameters is estimated by using Bayes method. Subsequently, solutions of both systems are obtained in term of future premium based on claim history from each policyholder.
Keyword: Bogor Agricultural University, Weibull distribution., geometric distribution, Bonus-Malus systems

Judul: Pembiakan Vegetatif Secara Kultur Jaringan Pada Anggrek Vanda Nelly Morley Dan Silangan Vanda Coerulea X Vanda Princesss Blue
Abstrak: Penelitian ini bertujuan untuk memperoleh bibit tanaman anggrek Vanda Nelly Morley dan silangan Vanda Coerulea x Vanda Princess Blue melalui tekhnik kultur jaringan. Dua rangkaian percobaan diselenggarakan di laboratorium Agronomi Fakultas Pertanian, Institut Pertanian Bogor. Berlangsung dari bulan Oktober 1982 - Mei 1983. Medium yang dipakai adalah Vacin dan Went dengan penambahan air kelapa, yeast extract, sukrose serta zat-zat tumbuh NAA, 2,4-D dan kinetin sesuai dengan perlakuan yang diberikan. Lingkungan tumbuh bagi kultur jaringan ialah: suhu ruangan berkisar antara 24 - 28° Celcius, dibawah penyinaran lampu TL 120 watt dengan lama penyinaran sepanjang hari. Untuk medium cair ditempatkan dalam alat pengocok dengan putaran kurang lebih 100 rpm selama 5- 6 jam per hari. Hasil percobaan yang pertama pada anggrek Vanda Nelly Morley menunjukkan bahwa sukrose tidak berpengaruh nyata pada jaringan apikal, tetapi sukrose nampak pengaruhnya pada jaringan mata tunas lateral yaitu pada kecepatan pembengkakan mata tunas dan pembentukan tunas baru...
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