Judul: Identifikasi kebutuhan kayu bakar menurut asal pada industri gula kelapa di Kecamatan Wangon Kabupaten Banyumas Jawa Tengah
Abstrak: Kabupaten Banyumas merupakan sentra industri penghasil gula kelapa. Salah satu daerah yang menghasilkan produk gula kelapa terbesar yaitu Kecamatan Wangon. Permintaan gula kelapa sebagai bahan baku dalam konsumsi rumah tangga dan industri makanan semakin meningkat mengakibatkan kebutuhan kayu bakar juga meningkat. Penelitian ini bertujuan untuk mengidentifikasi sumber kayu bakar yang digunakan, mengidentifikasi teknik memperoleh kayu bakar, menghitung kebutuhan kayu bakar yang digunakan dalam industri gula kelapa, dan menghitung potensi kayu bakar di Kecamatan Wangon. Penelitian ini dilakukan dengan pengamatan langsung ke industri gula kelapa. Data yang diperoleh dianalisis dengan metode deskriptif. Hasil penelitian ini menunjukan bahwa bahan bakar utama dalam mengolah gula kelapa berasal dari hutan rakyat dan tambahannya berasal dari hutan negara. Berdasarkan asal geografis kayu bakar diperoleh dari dalam desa dalam kecamatan sebanyak 92%, luar desa dalam kecamatan sebanyak 6% dan dari luar desa luar kecamatan sebanyak 2%. Industri yang memperoleh kayu bakar dengan cara memungut dan memangkas sebanyak 64 % dan yang memperoleh dengan cara membeli sebanyak 36%. Potensi kayu bakar yang tersedia di Kecamatan Wangon sebanyak 180.195,05 m3. Kebutuhan kayu bakar untuk industri gula kelapa di Kecamatan Wangon sebanyak 10.888,03 m3/tahun. Penelitian ini menunjukan bahwa potensi kayu bakar mampu memenuhi kebutuhan kayu bakar selama 16,55 tahun dengan jumlah tegakan tidak mengalami perubahan.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Coconut palm sugar industry, Firewood, Potential

Judul: Identifikasi Kebutuhan Kayu Bakar Menurut Asal pada Industri Gula Kelapa di Kecamatan Wangon Kabupaten Banyumas Jawa Tengah
Abstrak: Banyumas District is a central industry of coconut palm sugar. One region that produces the most coconut palm sugar product is Wangon Sub-District. The demand of coconut palm sugar as raw materials on the household consumption and food industry is increasing which also effects the needs of firewood. This research aims to identify the source of firewood that is used, to identify the technique to obtain firewood, to calculate the needs of firewoods that is used in the coconut palm sugar industry, and to calculate the firewood potential at Wangon Sub-District. This research was done by direct observation to the coconut palm sugar producers and the collected data was analyzed by descriptive method. The result of this research shows that the main fuel on the processing of coconut palm sugar was obtained from the society forest and the addition was obtained from the states forest. Based on the geographic origin, firewoods which were obtained from inside the village and inside the sub-district is as much as 92%, firewood obtained from outside the village and inside the sub-district is as much as 6% and firewood obtained from outside the village and outside the sub-district is as much as 2%. Producers which obtained firewoods by collecting and trimming is as much as 64%, while firewoods obtained by buying is as much as 36%. Firewood potential which is available at Wangon Sub-District is 180.195,05 m3. The needs of firewood for coconut palm sugar industry at Wangon Sub-District is 10.888,03 m3/year. This research shows that the firewood potential can fulfill the needs of firewood for 16.55 years with unchanged number of stands.
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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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