Judul: Pendugaan premi asuransi mobil dalam sistem bonus malus menggunakan sebaran poisson inverse gaussian
Abstrak: Dalam karya ilmiah ini dibahas mengenai metode pendugaan premi asuransi mobil dalam sistem bonus malus menggunakan sebaran Poisson inverse Gaussian. Sistem bonus malus adalah sistem yang pembayarannya bukan didasarkan pada ukuran klaim dari setiap pemegang polis, namun berdasarkan frekuensi dari klaim. Kemudian, dipelajari pembentukan suatu tabel bonus malus dengan menggunakan fungsi utilitas eksponensial pada sebaran Poisson inverse Gaussian. Penghitungan premi dengan menggunakan sebaran Poisson inverse Gaussian, yang diboboti fungsi utilitas eksponensial, menggunakan prinsip utilitas nol dengan nilai risiko aversi yang berbeda. Hasil dari tabel bonus malus dengan menggunakan sebaran Poisson inverse Gaussian tidak jauh berbeda dengan tabel bonus malus ketika diboboti oleh fungsi utilitas eksponensial.
Keyword: Sistem bonus malus, Poisson inverse Gaussian, Fungsi utilitas eksponensial, Bogor Agricultural University

Judul: Beberapa model banyaknya klaim dalam Sistem Bonus Malus
Abstrak: Model banyaknya klaim disusun berdasarkan pengalaman atau riwayat klaim para pemegang polis. Perusahaan asuransi (asuransi kendaraan bermotor) memodelkan banyaknya klaim untuk memudahkan penghitungan premi pemegang polis pada periode berikutnya. Empat model banyaknya klaim yang akan dianalisis adalah satu model Poisson dan tiga model Poisson campuran, yaitu Poisson-gamma atau binomial negatif, Poisson-Inverse Gaussian dan sebaran campuran berhingga 2-Poisson. Metode momen digunakan untuk memperoleh penduga parameter dari semua model. Khusus untuk model Poisson dan binomial negatif, digunakan juga metode kemungkinan maksimum. Dengan menggunakan uji kebaikan suai khi-kuadrat, setiap model akan dinilai kesesuaiannya terhadap data hasil observasi.
Keyword: Model banyaknya klaim, sebaran Poisson, sebaran Poisson campuran

Judul: Kandungan Mineral Kalakai (Stenochlaena Palustris) yang Tumbuh pada Jenis Tanah Berbeda serta Dimasak dengan Cara Berbeda
Abstrak: Kalakai (Stenochlaena palustris) is one of the local vegetables commonly available in the Palangkaraya. Previous research states that kalakai has a relatively high content of nutrients like beta carotene, folic acid, as well as some important minerals. Local communities (Dayak people) in Central Kalimantan and surrounding used to consume kalakai, especially mothers after child-birth.Kalakai has been recognized as an important vegetable to boost milk supplies for mothers who are breast-feeding. Kalakai was unique, because it can grow on various soil types, even on nutrient-poor soil. Therefore, this research aims to determine the effect of different types of soil on the mineral content of kalakai, and influence of processing on the mineral content. The sampling was conducted at five sites with different soil. They are peaty soil, sulphate acid soils, quartz sand soil, and alluvial soil in January and February. All of the samples were given four different treatments, boiling, frying, steaming and fresh (no treatment). Samples were analyzed moisture, ash, and minerals. Analysis of mineral content using Atomic Absorption Spectrophotometer (AAS) Perkin Elmer 1100B. The type of soil affect the content of minerals in the tip of kalakai leaf. It which grown on peaty soil containing a rather high of mineral Mg, Ca, Zn, Mn, which continuously reach to 5160, 6399, 134.6, 158 ppm, while Fe, Cu, and Al with a low successive level of 117.2, 4.5, 20.5 ppm. The pH of peaty soil in this study was 6.08, allegedly still quite a lot of minerals which can be absorbed by plants. Kalakai which grown on acid-suphate soil contains high Fe and Al i.e. 336.4 and 76.4 ppm. The high micro-mineral Al and Fe in acid-sulphate soils due to soil pH is low. Kalakai grown on quartz sand soil containing high minerals Ca, Cu, and Al, namely 6299, 25.1, and 58.1 ppm, respectively, while other minerals such as Mg, Fe, Zn, and Mn were low, it implies in the amount of 4598, 65, 86.8, and 65.9 ppm, respectively. Kalakai grown on alluvial soil is found that the content of Cu quite high, i.e. 7.26 ppm, whereas Fe, Mn, and Al content were low respectively 52, 63.4, and 5.3 ppm. Relatively low mineral content on kalakai of quartz sand and alluvial soil allegedly because of the low element nutrients contained in these soil types. Results of analysis of total mineral or ash content in various ways of cooking show that kalakai has a different total mineral content. Total minerals from the lowest to the highest were kalakai cooked by boiling, frying, steaming and fresh or without treatment of cooking. Cooking process give an effect to mineral content of kalakai. The process of boiling is the highest role in decreasing Mg (21-68%), Cu (11-60%), Ca (39%) and Mn (8- 38%). Other minerals such as Zn and Fe decreased by frying in the amount of 14-37% and 9-43%, respectively. The whole minerals, except Cu, still in the recommended daily intake limit, if assumed that one portion of kalakai is 50 gram dry basis.
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