Judul: Calculation of Premium and Benefit Reserves in Lifetime Joint Life Insurance with the New Jersey Method
Abstrak: Asuransi joint life seumur hidup merupakan model asuransi jiwa gabungan yang memberikan perlindungan atas risiko kematian pada dua orang atau lebih dalam satu polis. Perusahaan asuransi akan memberikan santunan ketika salah satu peserta meninggal, namun peserta asuransi memiliki kewajiban membayar premi selama masa hidupnya. Demi mencegah terjadi kegagalan membayar santunan di masa depan, perusahaan asuransi perlu melakukan penghitungan premi dan cadangan manfaat setiap tahun secara cermat. Karya ilmiah ini membahas penghitungan premi dengan prinsip kesetaraan dan cadangan manfaat pada asuransi joint life seumur hidup dengan metode New Jersey. Perbandingan dengan cadangan manfaat prospektif menunjukkan keefektifan cadangan manfaat dari metode New Jersey karena dapat menutupi kekurangan biaya di tahun awal polis asuransi., Lifetime joint life insurance is a multiple lifetime insurance which gives death risk protection for two or more people in one policy. The insurance company will give benefit after the first participant dies, but the insurance participants have to pay the premium insurance during their lifetime. In order to prevent failure to pay compensation in the future, insurance company must calculate the premiums and annual benefit reserves carefully. This paper discusses how to calculate premiums using the equality principle and benefit reserves in lifetime joint life insurance with the New Jersey method. Comparison with the prospective benefit reserves shows the effectiveness of the New Jersey method due to its capability to cover up the shortfall in the initial year of the insurance policy.
Keyword: benefit reserves, joint life insurance, New Jersey method, premium, prospective method

Judul: Determination of Benefit Reserves in Joint Life Insurance with the Canadian Method
Abstrak: Asuransi jiwa joint life merupakan asuransi multi life yang pembayaran preminya dibayarkan hingga salah satu tertanggung yang terdaftar pada polis meninggal dunia dan manfaat asuransi akan dibayarkan di akhir tahun kematian pertama. Pada karya ilmiah ini, metode Canadian diterapkan dalam menentukan cadangan manfaat pada asuransi jiwa seumur hidup, berjangka, endowment murni, dan dwiguna untuk asuransi jiwa multi life status joint life dua individu. Selain itu, diasumsikan pembayaran premi konstan hingga maksimal 10 tahun dan besar manfaat yang diberikan kepada tertanggung sebesar satu satuan. Berdasarkan hasil ilustrasi penghitungan, nilai cadangan manfaat asuransi jiwa berjangka meningkat setiap tahun hingga tahun ke-10 lalu menurun setiap tahun hingga tahun terakhir, sedangkan untuk ketiga jenis asuransi lainnya nilai cadangan manfaat meningkat setiap tahunnya dengan peningkatan yang signifikan terjadi ketika tertanggung masih membayarkan premi., Joint life insurance is a multi-life insurance policy in which premiums are paid until one of the insured individuals listed on the policy passes away, and the insurance benefits are paid out at the end of the first death year. In this research paper, the Canadian method is applied to determine the benefit reserves for whole life, term life, pure endowment, and endowment joint life insurance policies for two individuals. In addition, it is assumed that the premium payment is constant for up to a maximum of 10 years and the benefit amount given to the insured is one unit. Based on the results of the illustration calculation, the reserve value of term life insurance benefits increases yearly until the 10th year and then decreases every year until the last year; as for the other three types of insurance, the value of benefit reserves increases yearly, with a significant increase occurring when the insured still pays premiums.
Keyword: Canadian method, joint life insurance, benefit reserves

Judul: Process engineering of cassava pulp hydrolysis using microwave heating for ethanol production
Abstrak: Cassava pulp is a potential source of carbohydrates. In this work, characteristics of the cassava pulp were analyzed and validity of microwave irradiation for hydrolysis of carbohydrates, especially starch present in the cassava pulp, was estimated as a non-enzymatic saccharification technique. The hydrolysis was performed in water and acid medium. In addition, the role of activated carbon in the microwave-assisted hydrolysis was also evaluated. An optimization of the hydrolysis was conducted using Central Composite Design (CCD) and was analyzed using Response Surface Methodology (RSM). Fermentation of cassava pulp hydrolysates produced from microwave-assisted acid hydrolysis was performed to those added with activated carbon (25% w/w) and those without activated carbon by Saccharomyces cerevisiae. There were two types of activated carbon, which have different adsorption properties, used in this experiment. Results of the cassava pulp characterization shows that the starch granules in the cassava pulp were trapped in biomass matrices, so that the starch was harder to hydrolyze than the free starch, such as that in tapioca flour. Microwave-assisted hydrolysis of cassava pulp can be completed in less than 15 minutes in water medium, and less than 10 minutes in acid medium. The addition of activated carbon improved hydrolysis of cassava pulp starch in water medium with suppression of formation of the secondary decomposed materials. The highest glucose yield obtained from cassava pulp was 46% of dry matter or 52% of theoretical, which was about 60% higher than the one without the addition of activated carbon. On the contrary, the addition of activated carbon decreased the glucose yield when the hydrolysis was performed in acid medium (0.5% H2SO4). The glucose yield could reach 80.8% of dry matter or 91.5% of theoretical yield when no activated carbon was added in the acid medium. The estimated optimum condition for cassava pulp hydrolysis under microwave irradiation was using 0.88% sulfuric acid with 9 minutes of heating time, which resulted in 85% of theoretical glucose yield and 140 g/L glucose concentration. At the end of the fermentation the ethanol yield and concentration obtained in the samples treated with activated carbon (0.41-0.43 g ethanol / g glucose consumed; 34-35 g/L) were lower than that not treated with activated carbon or those treated with activated carbon which was added after hydrolysis (0.48 g ethanol / glucose consumed; 38- 39 g/L). However, the fermentation was completed very much faster in the hydrolysates treated with the activated carbon which has a high adsorption capacity than in that not treated with activated carbon or those treated with activated carbon of low adsorption capacity. Therefore, ethanol productivities (0.44-0.55 g/L/h) of the former were higher than the latter (0.28-0.34 g/L/h).
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