Judul: Studi PerbaDdingan Hasil Tangkapan yang Didaratkan di PPI Pangandaran, PPI Parigi dan PPI Cijulang di Teluk Parigi. Kabupaten Ciamis.
Abstrak: Penelitian dilakukan di kawasan Teluk Parigi, Kabupaten Ciamis pada bulan Nopember - Desember. Daerob tersebut merupakan basis perikanan tangkap di kawasan Ciamis Selatan. Dinas Kelautan dan Perikanan Kabupaten Ciamis (1998) menyebutkan bahwa potensi sumberdaya ikan di perairan Teluk Parigi mencapai 15.486 ton/tahun dan yang dimanfaatkan hanya 13% atau 2.087 ton/tahun. Pada saat ini terdapat tiga Pangkalan Pendaratan Ikan yang memberikan kontribusi yang cukup besar terhadap prnduksi perikanan di kawasan Teluk Parigi yaitu PPI Pangandaran sebesar 60,88 % di Pananjung, PPI Parigi sebesar 19,51 % di Bojongsalawe dan PPI Cijulang sebesar 19,61 % di Batukaras.
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Judul: Aktivitas Pendaratan dan Pemasaran Hasil Tangkapan di Pangkalan-Pangkalan Pendaratan Ikan Kabupaten Ciamis
Abstrak: Marine fisheries activities at Ciamis Regency is supported by the fishing landing bases (PPI) spread out over 5 sub-district. Some of the activities in these PPI are landing and marketing of fish catches. Both of these activities require adequate facilities and careful handling because fish is a perishable commodity. The purpose of this research are to know the actual condition of the fishing ports, the activity of landing and marketing of fish catches in 5 locations of PPI at Ciamis Regency. This research used the survey method and descriptive data analysis. The results showed that fishing port facilities in 5 locations of PPI at Ciamis Regency is still very lacking. All of PPI at Ciamis Regency uses beach and estuary of the river as a place for landing of the fish catches. PPI Batu Karas has the most of number and volume of landing fish catches than the others. The fishes landed on all of PPI at Ciamis Regency are marketed through the fish-trading activity, except at PPI Pangandaran. The fishes are marketed for consumption of local communities around the PPI, inside and outside of the Ciamis Regency. Some types of fish that has high economic value such as shrimp, lobster and hairtails are exported to Japan, China and South Korea. NP/P ratio and relative value of production index gained PPI Kalipucang in 2010 is bigger than the others. This is because the fish were landed at this PPI are homogeneous, consisting only of lobster that has high economic value.
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Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model