Judul: The shrimp fisheries management options of the Arafura Sea
Abstrak: Arafura Sea is the one of the 9 fishing grounds in Indonesia for shrimp fishing which the total area is estimated 150.000 km2. The total fish stock is estimated to be 1.076.890 tons/year and the demersal fish stock inlcuding shrimp is 145.830 tons/year. The shrimp fisheries condition at Arafura Sea is presumed to be over fishing and overcapacity due to ineffective of current management, lack of law enforcement capabilities, and lack of fishermen concern of the sustainable principles. The main objective of the dissertation is to formulate the shrimp fisheries management options which include vessels number reduction, implementation of quota and seasonal closure. The specific objectives of the dissertation are include: (1) analyze the shrimp fisheries bioeconomic, (2) analyze the actual versus sustainable production trend, (3) measure shrimp fishing capacity and efficiency, (4) formulate the recommendation of the future management options.
Keyword: 

Judul: Strategi Kebijakan Penanggulangan Illegal, Unreported, dan Unregulated (IUU) Fishing di Laut Arafura
Abstrak: One of the main problems in developing marine and fishery sector in Indonesia in the great number of irresponsible fishing practices, internationally knouwn as illegal, unreported and unregulated (IUU) fishing. IUU-Fishing is a serious threat to the responsible management of fish resources and an obstacle to the development of continued cact fishery. In this, there are 335 prawn trawlers above 30 GT as licensed by Marine and Fishery Departement in operation in Arafura Sea. Others prawn also has took the same activity but does not with licensed. Thre result of identifying fishing violations in Arafura Sea ia as follows : many fishing ships were not equipped with a fishing license, many ship did not obey the articles in the license, many ships were not eqipped with veseels monitoring sistem (VMS), and there were pair trawl. Unreported fishing happened because many fishers unload and sold the is cacth at sea (transhipment). Policy strategy in over coming IUU-Fishing by the Papua Province goverment which is formulated using SWOT analysis is to increase the role of government investigating officers from Marine and Fishery Departement through the establishment of fishery yudicial institution, to provide a surveillance ship, to build a supporting fishery port, to increase fund allocation to the supervisory activity, to improve coordination to control crimes at sea, and recruit more fishery personnel.
Keyword: 

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
Keyword: