Judul: Penerapan Prinsip Perhitungan Premi Hazard Proporsional pada Sebaran Empiris dengan Pendekatan Nonparametrik
Abstrak: Penentuan premi yang realistis dan ideal merupakan salah satu tantangan bagi perusahaan asuransi. Proses penentuan premi tidak terlepas dari berbagai asumsi sehingga dapat dipelajari dalam bentuk prinsip-prinsip perhitungan premi. Salah satu prinsip tersebut adalah prinsip perhitungan premi hazard proporsional. Dengan prinsip ini, premi dihitung berdasarkan sebaran kerugian agregat dan indeks keengganan risiko. Perhitungan premi hazard proporsional pada sebaran empiris dengan pendekatan nonparametrik menghasilkan penduga premi yang berbias. Untuk mengoreksi bias digunakan metode bootstrap, sehingga dapat diketahui ukuran contoh bootstrap yang menghasilkan penduga premi yang tidak berbias.
Keyword: Bootstrap, Indeks Keengganan Risiko, Pendekatan Nonparametrik, Premi Hazard Proporsional, Sebaran Empiris, Pengoreksian bias premi

Judul: Penghitungan Premi dengan Menggunakan Metode Bayesian  Robust dan Metode Kredibilitas Robust
Abstrak: Karya ilmiah ini membahas metode penghitungan premi yang digunakan oleh perusahaan asuransi. Jumlah premi yang harus dibayarkan kepada perusahaan asuransi tergantung pada besarnya klaim dan klaim tergantung pada dugaan risiko yang akan terjadi. Semakin tinggi risiko, maka premi yang harus dibayarkan kepada perusahaan asuransi juga akan semakin tinggi. Penghitungan premi menggunakan metode Bayesian robust dan metode kredibilitas robust. Metode Bayesian robust digunakan untuk mencari rataan posterior yang dianggap sebagai penduga premi risiko. Rataan posteriornya dibentuk dengan menggunakan fungsi likelihood. Metode kredibilitas robust digunakan untuk mencari rataan posterior yang dianggap sebagai penduga premi risiko. Dalam metode ini rataan posterior dibentuk dengan menggunakan model Bayesian.
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Judul: Morphofunction changes of gonadal and mandibular glands of the cave swiflets (Collocalia linchi) during nesting and reproductive period
Abstrak: The present study aimed to study the morphological and histochemical changes and possible correlation between the gonads and mandibular glands of the cave swiflets (Collocalia linchi) during reproductive and nesting period. A total of seventy two adult birds were used in this study. The birds, three males and three females, were collected each month during a period of one year. After being sacrificed, samples of gonads and mandibular salivary glands were taken out and processed routinely for light microscopy. The present result showed that the gonads were active during the period of February - June. In the testis, the size of the testicle were similar throughout the year, but the testis had different color according to month. The testis in June - January were black in color, and were white and black in February, March, May and were all white in April. The size and structure of the ovaries were also increase towards February - May. Therefore the period of February - June was regarded as reproductive period of the cave swiftlet. The size and structure of mandibular glands were also clearly increased and the glands were more active during the nesting and reproductive period. Histochemically, the bindings of some lectins in the gonad and mandibular glands were also increase in the number of reactive cells and in the intensities of the positive reactions during the nesting and reproductive period, suggested that certain carbohydrates were involved and may play important roles in the reproductive function of the cave swiftlet. The present result showed that there were clear signs on the functional and structural changes of the gonads and mandibular glands of the cave swiftlets during the active nesting and reproductive period, suggested a possible regulatory mechanism of the mandibular gland through gonadal hormones pathway.
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