Judul: Model of capture fisheries co-management in Palabuhanratu
Abstrak: Co-management is an approach to management of fishery resources which provide a large role for public participation in the facilitation by the Government and other stakeholders in managing its available resources. Palabuhanratu including many coastal areas has involved public participation, government, universities, NGOs, and private sector in the development of their fisheries activities, and is currently a core minapolitan area. This study aims to analyze the present condition of the implementation of the concept of fisheries co-management in Palabuhanratu and the dominant variables that affect it, determine the type and allocation of fishing effort, determine the appropriate co-management model, and formulating the implementation patterns of co-management cooperation in support of capture fisheries management in Palabuhanratu. This study used a SWOT analysis, QSPM, AHP, scoring analysis, feasibility analysis, analysis of LGP, and SEM analysis. Implementation of fisheries co-management is currently in Palabuhanratu still in a steady growth (quadrant of the matrix V IE, total IFAs = 2.66, total EFAs = 2.46). Dominant variables affecting the implementation of fisheries co-management is a human resource (TNPV = 5.82), capital (TNPV = 5.63), and technology (TNPV = 5.44). Co-management model that most appropriate for the management of capture fisheries in Palabuhanratu is a cooperative co-management model (RK = 0.259 on inconsistency reliable 0.07). Potential fishing effort that supports co-management fishery was payang, gillnet, troll lines, and longline, with the optimal allocation of 141 units, 31 units, 30 units and 20 units, respective by implementation of cooperative co-management can be focused on developing human resources capital (p <0.05), whereas the development of fishing technology can be ignored (p> 0.05). Human resource development should be done in the form of technical assistance and guidance, while training / education in the classroom can be reduced. Capital resources should be prioritized in the capital independent fishermen (K = 0.273, p = 0.00), and the capital of financial institutions (KP = 0.277, p = 0.00). Periodically, the performance of the implementation of co-management in fisheries should be evaluated. This performance evaluation should focus on improving the welfare of fishermen (KP = 3.385, p <0.05) and resource conservation and environmental protection (KP = 2.083, p <0.05).
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Judul: Model of management of capture fisheries area in Banten Bay
Abstrak: Banten Bay is area which quite rapid development for many activities. Industrial waste disposal, domestic, over fishing, coral exploitation, reclamation, vessel traffic, and environmental damage, cause interest multi sector conflict in managing sea area. General objective of the research is to create model of management of sustainable capture fisheries area in Banten Bay. The specific objectives are to (1) determine utilization status and development prospect of capture fisheries; (2) determine leading commodity; (3) determine environmentally friendly fishing gears, (4) establish utilization zone; (5) arrange policy strategy in managing capture fisheries; and (6) simulate of model of management of capture fisheries. Evaluating utilization status and development prospect of capture fisheries was conducted using surplus production method with bionomic model. Determination of leading commodity was conducted with LQ value, IS, and descriptive method. Environmental and sustainable fishing gear was analyzed using CCRF criteria with scoring method approach. Zoning of capture fisheries area utilization was conducted by GIS. Management strategy of capture fisheries area was conducted with SWOT and AHP. Simulate of model of management of capture fisheries was conducted with LGP and model simulation of sustainable fish resources and salary fisherman. The result showed that utilization status and development prospect of capture fisheries in Banten Bay can still be developed for 9 species from 23 species. Squid, anchovy, and crab were commodities with high comparative advantages. Hand line, boat lift net, and gillnet were environmentally fishing gears. Zoning of Banten Bay utilization are consist of aquaculture, recreation, conservation, capture fisheries, fishing port, and industrial zone. Zone of capture fisheries was composed base on fishing ground eligibility indicator, suitability of fishing gear with fishing ground, minimum of conflict potency, availability of infrastructure, and environmental carrying capacity. Capture fisheries zone is divided into three zones, that are (i) passive zone, (ii) passive and outboard fishing boat zone, (iii) active and inboard fishing boat zone. Based on LGP analysis, maximum catch was 1.747,259 ton/year, alocation for fishing gear of gillnet, danish seine net, set lift net, boat lift net, boat seine, hand line, guiding barrier trap, and monofilament gillnet were 3, 11, 11, 6, 2, 5, 0 and 0 unit, respectively. The proposed strategy in managing Banten Bay area were (1) utilization strategic location of Banten Bay with optimalization leading commodity for providing fish demand; (2) taking advantage of high availability of human resources and fisherman concern to manage capture fisheries area; (3) utilization local government support and regional autonomy to make policy in structuring and expansion of fishing area and involving coastal communities in the management. Model of management of capture fisheries area in Banten Bay can be increase of salary fisherman as much as 25% from first scenario and take care of sustainable fish resources the periode of time 18 years.
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik