Judul: A study suitability of coastal area for aquaculture in sausu sub-district parigi moutong distric, Sulawesi Tengah Province
Abstrak: In this time management of aquaculture on this area does not be done in an optimal condition, because generally aquaculture system are still in traditional way which is ~ntical with limitation in capital, technological and market. The objectives of the ~y are to identify the suitability of coastal area for aquaculture development, to d§!;ermine aassimilative capacity of coastal waters and to determine optimum area for a~aculture in coastal area. Based on the GIS analysis, the area, which is suitable for a.guaculture, accounted for about 5,311 ha, and moderate suitable area is about 10,871 hr. Carrying capacity of coastal waters for accommodating wastes from aquaculture agtivities is about 556,622,583 m3 . The maximum area for intensive shrimp farming is ajProximately 566 ha, 1,132 ha for semi-intensive system and 2,264 ha for traditional s)'Oitem. Existing condition of aquaculture in Sausu Sub-District is 1,675 ha. Thus, area oI1D aquaculture in Sausu exceeded three times carrying capacity level, if all of area is iiiend for intensive aquaculture system. Therefore, if the system of shrimp farming c~ducted semi intensive or traditional, the total area is double or four times bigger than iiensive system. If local government wants to enhance development of aquaculture on tl1is area, carrying capacity of environment and aquaculture system should be consider t&reach out sustainability of aquaculture development and coastal environment.
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Judul: An Analysis of Resource Optimization in the Development of Aquaculture in Levun Bay Area, Southeast Maluku Regency.
Abstrak: This study aimed to analyze the suitability of Levun Bay area, for mariculture to determine the optimal resources used, to analyze business feasibility, and to analyze the policy of the priority in developing aquaculture commodity. The research result showed that suitability classification of the bay area for grouper fish culture belonged to a suitable class with a value of 57.1, and the seaweed culture was considered as a very suitable class with a value of 67.2. Based on supporting capacity consideration, the optimum area of cultivation for grouper fish was 150.42 ha and for seaweed was 254.00 ha. The business feasibility analysis of kerapu fish and seaweed cultivation revealed that both businesses are feasible to be developed because the NPV, Net B/C and IRR met the feasibility criteria. The policy analysis of commodity development priority based on the result of AHP indicate that the seaweed aquaculture value of 0.598 and the grouper aquaculture of 0.402, therefore seaweed aquaculture should be given priority to be developed.
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Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix