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: Pengaruh Indole Butyric Acid (IBA) Dan Kinetin Pada Kultur Jaringan Anggrek Dendrobium
Abstrak: Percobaan ini bertujuan untuk mengetahui pengaruh berbagai konsentrasi IBA dan Kinetin terhadap kultur jaringan anggrek jenis Dendrobium sehingga didapatkan kombinasi zat tumbuh yang sesuai. Percobaan dilakukan di laboratorium Departemen Agronomi, Fakultas Pertanian, Institut Pertanian Bogor, mulai tanggal 1 Oktober 1982 sampai akhir Juli 1983. Ramuan medium dasar yang digunakan adalah medium Vacin & Went yang dimodifikasi sesuai dengan perlakuan yang diberikan, yaitu perlakuan tanpa IBA dan tanpa Kinetin (A), IBA O ppm dan Kinetin 0.1 ppm (B), IBA O ppm dan Kinetin 0.5 ppm (C), IB. 5 ppm dan Kinetin 0 ppm (E), IB. 5 ppm dan Kinetin 0.1 ppm (F), IB 5 ppm dan Kinetin 0.5 ppm (G), IBA 10 ppm dan Kinetin 0 ppm (H), IBA 10 ppm dan Kinetin 0.1 ppm (I), serta IBA 10 ppm dan Kinetin 0.5 ppm (J). Pembiakan dilakukan pada medium padat dan medium cair. Jaringan (eksplan) diambil dari mata tunas pucuk dan mata tunas samping dari tunas muda anggrek Dendrobium hibrid, yaitu hibrid I, silangan (Dendrobium Darci Mikami. var. Doroty is HOS x Dendrobium Stanettel Barra var. Jone AM HOS) venurobium Jacquelin Concert. ilibrid II, silangan Dendroum Mary Hak x (Dendrobium neeudoconanthum x Dendrobium schulleri) dan hibrid III silangan Dendrobium veratrifolium Dendrobium Madame Pompadour.
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