Judul: The Direction of Aquaculture Development for supporting Regional Development (A Case Study on Cianjur Regency).
Abstrak: Cianjur Regency is one of the potential areas for developing aquaculture. The largest part of total fish production came from the floating net cages (“Keramba Jaring Apung”-KJA) Cirata Dam. Recently, the condition of Cirata Dam is facing to degradation of its environment quality. Thus, the other alternative aquaculture developments required are freshwater ponds and paddy field (minapadi system). The efforts of fishery development in freshwater ponds and minapadi should be done in the context of regional development. Therefore, the objectives of this study were: (1) to identify existing region for aquaculture and irrigated paddy field; (2) to analyze land suitability and availability for freshwater ponds and minapadi; (3) to analyze superior commodities of freshwater fish in each district; (4) to analyze the fisheries linkages with other sectors; (5) to formulate a direction of aquaculture development. This study was conducted in Cianjur regency using primary and secondary data. Primary data was from interviews, questionnaires, observation and water samples. Secondary data was obtained from institutions. The analysis used in this study were land suitability and availability for freshwater ponds and minapadi, the determination of main commodities of fisheries, Input Output (I-O) and A’WOT (AHP and SWOT combined analysis). Land suitability and availability for freshwater ponds were analyzed using Geographic Information System (GIS) and Multi-criteria Evaluation (MCE) methods. Multi-criteria is the approaches or methods that aid an evaluating according to several criteria which ultimately may lead to better decisions. It started with distribution of weight for criteria, factor and sub-factor using Analytical Hierarchy Process (AHP). Then, the weight will be analyzed using GIS. Land suitability and availability for minapadi was analyzed using matching methods. Land suitability for minapadi system in this research was built based on land suitability for paddy field and availability of irrigation area. The analysis result of land suitability and availability showed that the suitable land for freshwater ponds was 86.511 hectares (23,89 % of total region). Of such suitable land, the suitable and available land was 74.062 ha (20,46%) and suitable but not available land was 12.449 ha (3,44%). The potential land in S1 (very suitable) class can be found at northern Cianjur (14 districts), central Cianjur (3 districts) and southern Cianjur (2 districts). The development of freshwater ponds also can be directed in suitable (S2) class which were potential at the northern and southern Cianjur. The marginally suitable (S3) class were potential at the central and southern Cianjur. Analysis result of land suitability and availability for minapadi showed that suitable land was 13.004 hectares (3,59% of total region). Of such suitable land, the suitable and available land was 9.553 ha (2,64%), while suitable but not available land was 3.451 ha (0,95%). The suitable and available land mainly at ix northern Cianjur, that is Bojongpicung, Ciranjang, Cikalongkulon, Haurwangi, Karangtengah, Mande and Sukaluyu. This potency can be raised if the irrigation network was developed mainly in southern Cianjur region, because of the high land availability of paddy field. The potential lands for freshwater ponds and minapadi need to be used in order to increase fish production. One of ways is efficiency by
Keyword: freshwater pond, minapadi, land suitability and availability, regional development

Judul: Fisheries Subsector Analysis in Indramayu Regency Regional Development.
Abstrak: Indramayu Regency has a great potential in renewable fisheries. It is expected that this fisheries subsector continues to grow and become a strategic subsector in Indramayu regional development. The objectives of this research were: (1) to identify the role of the fisheries subsector in the economy of the region and its links with other sectors in Indramayu regency, (2) to learn about the level of development of the regional development of fisheries subsector in Indramayu Regency based on the conditions of facilities and infrastructure, and (3) to find out the perception of stakeholders in determining development priorities for the fisheries subsector as well as to formulate a strategic direction in the development of the fisheries subsector in Indramayu regency. The analysis methods used were of Input-Output (I-O) analysis, hierarchical analysis of regional development (Skalogram Method), Analytic Hierarchy Process (AHP), and the combination of AHP and SWOT analysis (A'WOT). Based on the analysis, the fisheries subsector had a relatively low sectoral relationship. The result of direct forward linkage (DFLi), direct backward linkage (DBLj), Index deployment value (backward linkages effect ratio) and degree of sensitivity index value (forward linkages effect ratio) were below average. The result of multiplier effect output of fisheries, multiplier effect of fisheries gross value added, and multiplier effect of fisheries were revenue relatively low compared to other sectors. The fisheries subsector has the potential to be developed through enhancing linkages between sectors with industry excluding oil/gas sector and wholesale and retail trade sector. Schallogram analysis showed that the districts on hierarchy III were considered feasible to do the development since they were supported by the number of Farmer Households of culture amounting to 2,952 people (68%) of the total 4,344 people and 26,936 Fishermen Households (72%) of the total 37,425 people residing in the coastal area with the value of Human Development Index under 70. The districts in hierarchy III are the districts of Krangkeng, Juntinyuat, Cantigi, Pasekan, Kandanghaur and Patrol. According to the stakeholders, the priority of fisheries subsector development in Indramayu Regency was the development of aquaculture activities (42.04%) in terms of improving the quality of human resources (33.66%). In the development strategy of the fisheries subsector of aquaculture activities in Indramayu regency, priorities should be in the development of existing resources (Natural Resources, Human Resources, Artificial Resource/Infrastructure, Institutional, Technology and Capital) to achieve sustainable development.
Keyword: fisheries subsector, Indramayu Regency, regional development

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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