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: Penentuan Besarnya Premi untuk Sebaran Risiko yang Berekor Gemuk (Fat-Tailed Risk Distribution)
Abstrak: Penentuan besarnya premi merupakan bagian yang penting. Jika besarnya premi terlalu rendah, maka akan mengakibatkan kerugian bagi perusahaan asuransi. Sebaliknya, jika terlalu tinggi maka akan kalah dalam persaingan antar perusahaan asuransi dalam mencari nasabah. Asumsi sementara bahwa perusahaan asuransi dihadapkan pada terjadinya klaim dalam periode waktu tertentu yang besarnya tidak dapat ditentukan. Klaim yang nilainya lebih kecil dari suatu nilai yang ditetapkan sebagai nilai risiko (value-at-risk) tidak akan menjadi masalah untuk perusahaan asuransi, tetapi yang akan menjadi masalah adalah jika muncul klaim yang besar di mana nilainya melebihi nilai yang ditetapkan dan dapat mengakibatkan kebangkrutan pada perusahaan asuransi. Klaim yang besar teridentifikasi pada ekor sebaran. Ekor sebaran mempunyai beberapa karakteristik, misalnya dapat digunakan untuk menentukan besarnya premi pada perusahaan asuransi.
Keyword: Sebaran Risiko, prinsip eksponensial, prinsip kuasa

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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