Judul: Development of Sustainable Giob Fisheries in Kayoa, South Halmahera
Abstrak: Giob fishery is one of the major fisheries in Kayoa, South Halmahera Regency, requires various aspects related studies. This study aims to formulate alternative development strategies of giob fisheries sustainability. Data collection was conducted from November 2011 to October 2012. The analysis includes: giob fishing conditions, biology of halfbeak fish (Hemiramphus sp.), giob fisheries technical evaluation, giob fisheries sustainability, and sustainable development of giob fisheries. This study showed that halfbeak females experienced two phases of the gonads mature season i.e. in January-March and September-November. The food composition of the fish consisted of phytoplankton (52.80%), debris (31.36%), crustaceans (12.04%), zooplankton (3.73%), and fish scales (0,08%).The natural mortality rate (M) was 0.78 per year, greater than rate of fishing mortality (F) of 1.48 per year, the exploitation rate (E) of 0.65 per year. Technical factors of giob production that have a significant influence was fuel price. In term of financial analysis, the giop vessel size of 10.5 GT benefit better than the size of 4.5 and 15 GT. The parameter of NPV, IRR, B/C ratio, ROI for the vessel of 10.5 GT was Rp 72,795,666; 7.02%, 1.04; 7.80, respectively. This study suggest that priority sequence of development strategies of sustainable giob fisheries in study area (with interest ratio) are: 1) monitoring of exploitation of halfbeak fish resources (0.421); 2) conduct a capacity building program for the giob fishermen ( 0.226); 3) technological innovation of giop fishing gear (0.222); 4) to establish a cooperative management (co-management) for giop fisheries (0.180), and 5) cacth optimum of halfbeak fish (0.132).
Keyword: giob fisheries, halfbeak fish (Hemiramphus sp.), sustainable development strategy

Judul: Analisis keragaan usaha penangkapan ikan pasca program pemberdayaan nelayan di Kabupaten Halmahera Utara
Abstrak: The objectives this research were : (1) to assess the impact of fishing unit assistance to increasing fisheries income level, in North Halmahera Regency, (2) to assess influence mayor factors of fisheries income level (3) to selection of alternative policy strategy for sustainable increasing fisheries income level. Result of this research show that, most of the level of fishing technology used is relatively simple, except pajeko fishing technology has relatively advanced technology. The fishing unit’s empowerment program significantly positive impact on improving the income of fishermen. Based on feasible and investment criteria analysis indicate pajeko fishing unit of gillnet, bottom long line and mini purse seine more feasible to be developed in North Halmahera regency. Result of matrix internal factors analysis summary (IFAS) indicated that total factor internal value in IFAS between 3,1 ³ 2,5, its mean internal condition had strength to overcome weakness state. Whereas result external factors analysis summary (EFAS) show that the total EFAS value between 2,6 ³ 2,5, its mean system capable to response external state. Base on SWOT (strenght–weakness, opportunity-threat) analysis obtain six development strategies of increasing fisheries income: (1) Scale business fisheries development; (2) Improved fishing infrastructure; (3) Development of market aces (4) Training programs for fisheries capacity development; (5) The Law enforcements; (6) Partnership development.
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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