Judul: Truncated Stop Loss as a Optimal Solution of Reinsurance Agreement in One-Period Model
Abstrak: Reinsurance is one of risk management efforts of an insurance company, which is called the cedent. Similar with insurance, reinsurance constitutes the cedent to pay the premium. We consider one-period reinsurance model and derive a rule which minimizes the ruin probability of the cedent for a fixed reinsurance premium. Therefore, it is needed to construct an optimal reinsurance agreement for the cedent. The premium is calculated according to four different principles, i.e. economic, generalized zero-utility, Esscher, and mean-variance principles. Stop loss is a reinsurance contract which protect the insurance company for losses that exceed a certain amount. The result of this research shows that a truncated stop loss is an optimal agreement in the class of all reinsurance contracts with various premiums calculated using above mentioned principles.
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Judul: Studi terhadap Perencanaan Premi Optimal dengan Reinstatements pada Perusahaan Reasuransi.
Abstrak: Reinsurance is an underwrite all or a portion of the insurance risk. Insurer paid a number of premiums to reinsurer and that premiums would be income for reinsurer. Premium plan is very important for reinsurer facing risks of submitted claims. Premium plan in this paper is premium plan of reinsurance with reinstatement. This premium is not paid in the beginning of the contract, but it is paid when the loss of the reinsurer exceed maximum bound capacity of reinsurer. For illustration purpose, it is assumed that the reinsurer’s loss is satisfied a truncated exponential distribution. Reinsurance contract minimizes the expectation of square the difference between the total premium income and the loss of the reinsurance, therefore it is said to be optimal. Minimizing the expectation of square all over premium plans can be viewed as a credibility problems. Covariance matrix of the explanatory random variables of premium plan with reinstatement is invertible, so that the premium plan has a unique solution. Optimal premium plan are unbiased and nonnegative.
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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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