Judul: Fisheries Management Inland Water In Sebangau and Katingan Rivers Sebangau National Park Central Kalimantan
Abstrak: The Sebangau and Katingan Rivers which flow over ± 200 km and ± 650 km respectively. Parts of the river’s bodies constitute outer boundary of the Sebangau National Park (SNP) conservation area Central Kalimantan. Both of the rivers have abundant freshwater resources and exploited through capture fisheries activities. The fishing grounds are located in main and tributaries. The main area of Sebangau River is an open area while the tributaries area is a private area. The problem formulation in this study is that the management system in Sebangau and Katingan Rivers share different conditions. Private area in Sebangu tributaries with rights-based fisheries. Meanwhile, the entire area of Katingan River with open fisheries. The presence of fisheries management in both rivers is identified to decide if its presence should be maintained or otherwise. This research aims to identify the presence of inland fisheries management system in the Sebangau and Katingan Rivers by describing exogenous factors, actor participation, and interaction patterns. This research will give benefit to science and inland fisheries management system recommendations. This study was located at Sebangau and Katingan River, covering main and tributaries channel, where the research has been perfomed during October-December 2019. The methods consisted of descriptive with qualitative approach through both primary data (observation, interview, and documentation) and secondary data (the documented studies) collection. Analysis data was composed of content analysis (data reduction, data display, and verification) and analysis of management system based on Ostrom’s Institutional Analysis and Development framework (2014). The main informants of the study were 30 fishermen. The results of this study identified based on three exogenous factors, actor participation, and interaction patterns. The first exogenous factor is the river's biological condition, which has capture fishery resource of eight types of fish families per river. The Channidae family has the highest number of species in each river. The river’s physical condition is influenced by the forest’s peat swamp and produces black waters. However, the main Katingan River has cloudy brown color. The second exogenous factor is the community attribute including socio-economic condition of the fishermen. The social capital used is based on kinship and relationship patterns. Economic activities occurs from capture fishery which is influenced greatly by environmental conditions that’s why fishermen's income is exposed to uncertainty. The third exogenous factor is the adopted formal rules which is controlled by the Sebangau National Park Management Office and informally originated from the fishermen's agreement. Both rules are used to maintain fishing activities and the use of river resources. The existing regulations need to be completed to cover all capture fisheries activities. The actor participation were included fishermen, damang, field facilitators from SNP Management Office and WWF Central Kalimantan. The actors build the associative and dissociative interaction patterns by involving river resources. Based on the research results, it can be concluded that the presence of inland fisheries management system in Sebangau River can maintain rights-based fisheries, by involving right-fishermen to maintain the river management with SNP Management Office. Katingan River can maintain open fisheries with support for environmental conservation activities and full control from SNP Management Office.
Keyword: Capture Fisheries, Katingan, National Park, Right-based Fisheries, Sebangau

Judul: Sustainable management of capture fishery in Jakarta Waters, DKI Jakarta Province
Abstrak: Jakarta Waters is categorized as fully exploited water areas which its coastal areas accommodate multifunction services. Therefore, it needs precautionary approach to manage fisheries activity and its resource in the location. This is important to sustain the potential resource, provide prosperity to fishermen as well as coastal communities. The general objectives of this study are to arrange the sustainable fishery management in Jakarta Waters, while specific objectives of this study are to evaluate capture fishery management status; to determine optimum allocation of potential fishing gears and fisheries development areas based on potential fishing gears; to analyze the various components affecting to capture fishery activity based on suitable area and to analyze internal and external conditions in order to arrange the strategies for sustainable fishery management in Jakarta Waters. The methods used in this study were system approach, SWOT analysis, Linear Goal Programming (LGP) analysis, analysis of Location Quotients (LQ), Geographic Information System (GIS) analysis, and Analytical Hierarchy Process (AHP) method. The results revealed that the management of capture fishery in Jakarta Waters was categorized as "kurang baik" with the total scores of 2.529 and 2.747 for internal and external factors analysis, matrix IE pointed out that the position of fishery management at growth level which need strategy to do coordination horizontally with the other stakeholders. By using GIS analysis, it was identified that 52,89% of Jakarta Waters can be used for capture fishery, less than 25% can be used for fish farming (cage culture) and less than 15% can be used for seeweed culture. Meanwhile the potential fishing gears to be developed were pelagic danish seine, drift gillnet, boat lift net, set bottom long line, portable trap and muro ami which have the optimum allocation for each fishing gear; 7 units, 98 units, 23 units, 18 units, 8547 units, and 798 units. The potential fishing gears for pelagic danish seine could be developed in Penjaringan and North Seribu Island Districts; drift gillnet could be developed in Cilincing District; boat lift net could be developed in Penjaringan District; set bottom long line could be developed in Penjaringan District; portable trap could be developed in Cilincing and South Seribu Island Districts while muro ami could be developed in Penjaringan and South Seribu Island Districts. The study identified that there are several important strategies to support sustainable capture fishery management, from the first priority to the last are small-scale fishery standardization, integrated management to conserve the ecosystem function, quality product improvement, fishing days opreration management by implementing closed – open seasons, increasing independent fishermen capability, human resources empowerment, extention for fishermen and increasing capture fishery activities supervision. As the first priority, the standardization of small-scale fishery should be stable against changes in the dimension of biology and quite stable against changes in the ecological, economic, social and technological dimension.
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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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