Judul: Bentuk Penggunaan dan Produktifitas Lahan Sistem Dusung (Studi Kasus di Kecamatan Leihitu, Kabupaten Maluku Tengah)
Abstrak: The practice of agroforestry system in Maluku had been occurring for many generations since long time ago, and the people usually called this system as dusung. Agroforestry dusung was a heritage from the ancestors to their descendants, and comprise wood tree, fruits, sago, palm and medicinal plants. This research was conducted to identify the type of land use in dusung system, rearn the land productivity in dusung system, study and to analyze the forms of dusung system for land conservation at Wakal village and Hatu village, Leihitu district, central Maluku, Ambon Island. There were three types of land uses on dusung system, namely farm system, mixed planting system and monoculture planting system. Of these three land uses, the highest production was in mixed planting system on Wakal and Hatu villages which were (Rp 9.716.000,- /ha/year and Rp 11.468.000,- /ha/year). Production in monoculture system in the two villages were respectively (Rp 5.050.000,- /ha/year and Rp 6.785.000,- /ha/year), whereas those of farm system were (Rp 3.466.924,- /ha/year and Rp 2.394.804,- /ha/year). Erosion on land use in dusung system varied according to the type of land uses and land slope. Erosion index ranged within 0 - 1, while degree of erosion was categorized as ranging from low to medium. Erosion in Wakal Village, for farm system was 53.83 ton/ha/year which was greater than ETot 48 ton/ha/year. In monoculture planting system erosion reach of 72.30 ton/ha/year, which was greather than ETot 45 ton/ha/year. On the other hand, farm system in Hatu Village had caused erosion of 49.5 ton/ha/year greater than ETot 30/ha/year. Mixed planting system in Wakal and Hatu had erosion of respectively 30.68 to /ha/year and 12.14 ton/ha/year, which were below ETot 45 ton/ha/year and 43.2 ton/ha/year.
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Judul: Keragaan Kelembagaan adat agroforestri Dusun: studi kasus Negeri Liang, Kecamatan Salahutu, Kabupaten Maluku Tengah dan Negeri Werinama, Kecamatan Werinama, Kabupaten Seram Bagian Timur
Abstrak: Praktek pengelolaan sumberdaya hutan berbasis masyarakat melalui teknik penanaman membentuk sistem agroforeshi telah lama membudaya di masyarakat. Di Maluku, praktek-paktek semacam itu dikenal masyarakat dengan istilah dusun. Sistem dusun mempunyai perangkat aturan-aturan adat yang dimiliki masyarakat, baik dalam mengatur status penguasaankepemilikkan lahan hutan, maupun mengelola jenis-jenis tanaman tertentu yang diusahakan. Sistem dusun sebagai salah satu bentuk tradisi masyarakat dalam menata kehidupan bermasyarakat, termasuk upaya untuk mengatur pemerataan pembagian atau pendapatan hasil dari pada sumberdaya alam sekitar kepada seluruh wargalpenduduk setempat melalui sistem sasi mempakan ha1 yang perlu untuk diangkat. Penelitian ini bertujuan untuk : (1) mengkaji bentuk dan peran kelembagaan adat masyarakat dalam mengatur dan mengelola sumberdaya hutan dan dusun-nya ; (2) mengidentifikasi faktor yang mempengaruhi keberlanjutan sistem adat sasi ; (3) menganalisis keragaan pendapatan masyarakat, dari jenis hasil-hasil dusun yang diusahakannya ; (4) mengidentifikasi struktur dan komposisi sistem agroforestri dusun. Metcde penelitian yang digunakan adalah metode studi kasus. Alat analisis yang digunakan adalah analisis kelembagaan, analisis deskriptif kualitatif, analisis pendapatan, analisis vegetasi dan analisis profil vegetasi.
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Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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