Judul: Optimasi Perikanan Layang di Kabupaten Selayar Propinsi Sulawesi Selatan
Abstrak: Scads is a potential fishing resources in Selayar regency. The production of scads fishery landed in Selayar regency was 31.5 ton in 2006. The objectives of the research are 1) to determine priority of catching technology development for scads fish in Selayar district; 2) optimum allocation of scads fish catching unit in Selayar district; and 3) to determine development strategy of scads fishery. Survey method and direct observation was used in research methodology. Some analysis used in this research were 1) Scoring method, to determine the best of scads fishing technology pursuant to biological, tehnical, sosial, economical aspects and environmentally friendly; 2) LINDO analysis was used to determine optimum allocation in scads fish catching unit; and 3) SWOT analysis was used to determine development strategy of scads fishery. The result of this research is that the scads purse seine fishing technology become the most effective, efficient and suistainable. Optimum number allocation of scads fish catching unit used in Selayar district waters is 61 units of purse seine. The development strategy of scads fishery at Selayar district are (1) Optimizing scads fishery; (2) Operating economical oil consumption fishing unit; (3) Capital effort with low interest are available; and (4) Improvement of stakeholders and public function in fishing gear operation controlling.
Keyword: 

Judul: Pengembangan Perikanan Tangkap Berbasis Optimasi Sumberdaya Ikan Pelagis di Kabupaten Banyuasin Propinsi Sumatera Selatan
Abstrak: The pelagic fish is one of potential fishery resources in Banyuasin District. The production of pelagic fish fishery landed in Banyuasin District was 29,6 ton in year 2006. The objectives of the research were 1) to determine fishing technology for pelagic fish which more effective, efficient and sustainable based on biological, technical, social, economic and environment aspect; 2) to allocate optimum of pelagic fish catching unit in Banyuasin District; and 3) to determine development strategy of pelagic fisheries. The result of this research indicated that drift longline fishing technology is more effective, efficient and sustainable than drift gillnet and liftnet. The number of optimum allocation of fishing unit has been calculated which consist of drift longline 51 unit, drift gillnet 45 unit and liftnet with 55 unit. The output of feasibility analysis of drift longline fishery is the study area, indicated profit of Rp. 18,767,666, its NPV value was Rp. 55,855,075, Net B/C was 2.22, the BEP value was Rp. 39,055,258 that equal to production 23,669 kg, the ROI and IRR value were 41 % and 48. The output of feasibility analysis of drift gillnet fishery is the study area, indicated profit of Rp. 17,320,000, its NPV value was Rp. 46,437,216, Net B/C was 2.08, the BEP value was Rp. 26,951,872 that equal to production 16,171 kg, the ROI and IRR value were 40 % and 48 %. The output of feasibility analysis of liftnet fishery is the study area, indicated profit of Rp. 23,610,000, its NPV value was Rp. 214,477,312, Net B/C was 3.94, the BEP value was Rp. 31,292,924 that equal to production 16,506 kg, the ROI and IRR value were 32 % and 83 %. The development strategy of pelagic fisheries in Banyuasin District are: (1) optimization pelagic fish fishery with drift longline; (2) development pelagic fish fishery focusing in 6-12 mile zone; (3) Increase management effort of fisheries business; (4) revitalization of fisheries infrastructure and facility; and (5) Empowering scale of fishing fleet and its technology.
Keyword: 

Judul: Transisi Fasa Materi Hadronik ke Materi Kuark pada Inti Bintang Neutron.
Abstrak: Bintang neutron terdiri dari beberapa lapisan yang disusun oleh materi nuklir yang berbeda dengan kerapatan yang semakin tinggi ketika mendekati pusat bintang. Inti luar bintang neutron disusun oleh materi hadronik (nukleon, lepton, dan hyperon), sedangkan inti dalam bintang neutron disusun oleh kuark-kuark bebas (up, down, strange) yang saling berinteraksi. Tujuan penelitian ini adalah mempelajari bagaimana transisi dari inti luar ke inti dalam bintang neutron dengan menggunakan pendekatan RMF (Relativistic Mean Field) untuk materi hadronik dan CIDDM (Confined Isospin Density Dependent Mass) untuk materi kuark. Tekanan transisi diperoleh ketika potensial kimia barion materi hadronik dan materi kuark bernilai sama. Nilai tekanan transisi dengan parameter SU6-TM1 sekitar 87 MeV/fm3 dan diperoleh massa maksimum bintang neutron yaitu 1.92M dengan jari-jari sekitar 8.62 km. Nilai tekanan transisi dengan parameter SU6-G2 sekitar 53 MeV/fm3 dan massa maksimum bintang neutron yaitu 1.88M dengan jari-jari sekitar 8.16 km. Jenis transisi fasa adalah orde satu ditandai dengan diskontinuitas dalam kerapatan energi (adanya mixed phase). Parameter-parameter pada model nuklir yang digunakan menyebabkan perbedaan kekakuan persamaan keadaan (EOS) dari materi hadronik dan materi kuark sehingga nilai tekanan transisi dari fasa hadronik ke fasa kuark juga berbeda.
Keyword: bintang neutron, persamaan keadaan, transisi fasa