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: Desain pengelolaan budidaya laut berkelanjutan di Teluk Saleh Kabupaten Sumbawa
Abstrak: Mariculture activities have complex problems as they are related to the activities in the mainland. These mariculture activities will affect biophysical conditions and supporting capacity of water, social economic conditions, institutions and mariculture technology all of which are closely related to each other to form a complex system. The dynamics and complexities of problems currently confronted are dynamic process, realized as series of possible events expected to happen in the future. However, their occurence depends on current goverment policies. To support the implementation of government’s policy to make Saleh Bay as a center for developing mariculture, we need multi-dimensional approach. This will allow the concept of sustainable development to be carried out to ensure the ecosystem preservation with due regard to the limitation of environmental capacity so that it can generate economic benefits to the people and regional economy continuously. The main objective of this research is to develop a design of sustainable mariculture management at Saleh Bay, district of Sumbawa. The specific objective of the research are: (1) to analyze the suitability of water for mariculture; (2) to analyze the capacity of water to support mariculture; (3) to analyze index and status of sustainability of mariculture management; and (4) to develop strategy for managing mariculture continuously. Some analytical tools used in this research were water suitability analysis, supporting capacity analysis, Multi Dimensional Scaling (MDS) analysis, and quantitative descriptive analysis. Water suitability area for seaweed culture is around 22.860,19 ha. The area for culturing grouper based on KJA system is 27.814,14 ha. The area for water’s supporting capacity, based on water’s capacity for seaweed is 12.309,34 ha or around 31.536 units. Meanwhile, the supporting area based on N-assimilation capacity approach for green seaweed is 21.232,91 ha or 54.443 units and for brown seaweed is 16.900 ha atau 43.325 units. The area of water’s supporting capacity for mariculture based on water capacity for KJA system based-grouper culture is 23.902,81 ha or around 31.536 units. The supporting area based on total N supply-in-water approach is 27.814,18 or 345.836 units. Status for sustainability of mariculture management for seaweed cultivation based on long-line system and for grouper culture based on KJA system at Saleh Bay, District of Sumbawa currently, according to multidimentional scale, can be categorized as “less sustainable”. For the short-term and medium term scenario, its status improves from “less sustainable” to “sufficiently sustainable” and in the long-run scenario, it will increase to “very sustainable”. While sustainability status for KJA mariculture management in the short and medium terms remains “less sustainable”, in the long-term scenario, its sustainability status increases from “less sustainable” to “sufficiently sustainable”.
Keyword: Design, management, mariculture, sustainability, Saleh Bay

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