Judul: Karakteristik Payang Gemplo (Seine Net) di Pelabuhan Perikanan Pantai Dadap, Kabupaten Indramayu.
Abstrak: Payang gemplo consists of three parts, such as wings, body and bag. Mesh size in the bag is 0,1cm and 0,4 cm, body is 10,5-35 cm and wing is 40 cm. The main catch is an anchovy (Stolephorus sp.) and small pelagic fish. Catching method of payang uses one boat system and fishing operations carried out during the day (one day fishing) with a boat size of 3 to 5 GT. The composition of the catch comprises of anchovy (Stolephorus sp.) as a target catch with 43,73%. While the bycatch consists of other fish 22,74%, such as pony fish (Leiognathus dussumieri) 11,37%, long jawed mackerel (Rastrelliger sp.) 10,2%, sardine (Sardinella gibbosa) 4,90%, hair tail (Trichiurus savala) 2,90%, and pomfret fish (Pampus argentus) and mackerel (Selaroides sp.) each for 2,07%. Based on the analysis of the Shannon-Wiener diversity index indicated value of the index at 1,24 or > 0,1 which means payang gemplo fishing gear in Dadap is categorized low selectivity.
Keyword: Payang Gemplo, Dadap Costal Fishing Port, Anchovy

Judul: Perikanan payang di kotamadya padang
Abstrak: Tujuan penelitian ini adalah untuk Mempelajari perikanan payang di Kodya Padang. Univers Penelitian ini dilaksanakan di Kodya Padang, Propinsi Sumatera Barat. Waktu penelitian terhitung mulai tanggal 11 Agustus sampai tanggal 30 September 1985. Metode yang dipakai dalam penelitian ini adalah merupakan studi kasus.. Analisa data berdasarkan analisa "Break- Even" dan "B/C ratio". Pengembangan alat tangkap, didekati berdasarkan produksi dan nilai produksi tahunan, biaya investasi, biaya tetap, biaya tidak tetap dan potensi lestari. sumberdaya. Potensi sumberdaya perikanan laut di Propinsi Sumatera Barat diperkirakan masih besar, potensi lestari ikan pelagis kecil 35 464,9 ton per tahun, ikan pelagis besar 11 915,9 ton per tahun dan ikan karang/demersal 24 078,6 ton per tahun. Berarti tingkat pengusahaan pada tahun 1984, baru mencapai 42,48 persen untuk ikan pelagis kecil, 82,84 persen untuk ikan pelagis besar dan ikan karang/demersal 13,44 persen. Unit penangkapan payang terdiri dari perahu kayu, mempunyai nilai gross tonage berkisar 1,32 ton sampai 2,20 ton, material jaring payang terbuat dari bahan sintetis, warna jaring coklat. Daerah penangkapan nelayan meliputi perairan laut Kodya Padang dengan jarak tiga mil sampai lima mil dari pantai. Hasil tangkapan dengan alat tangkap payang adalah, ikan tongkol (Euthynus sp), tembang (Sardinella fimbriata), kembung (Rastrelliger sp), layang (Decapterus sp), selar (Caranx sp) dan beberapa jenis ikan lainnya. ...
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Judul: A Continuous Vaccination Strategy in the SVIR Epidemic Model
Abstrak: Vaccination is conducted to minimize the spread of a disease. The vaccination is usually done several times within a fixed time interval. In the SVIR model, it is assumed that individuals do not get immediate immunity following a vaccination program. So according to process of vaccination on SVIR model, there are two strategies, i.e. the continuous vaccination strategy (CVS) and the pulse vaccination strategy (PVS). In this study, only the CVS strategy in epidemic model SVIR is considered. Results of the study indicate that dynamics of the CVS system depends on the basic reproductive number. If the basic reproductive number is less than one, then the disease-free fixed point is asymptotically stable. It means that the disease will eventually disappear from the population. Conversely, if the basic reproductive number is greater than one, then the endemic fixed point is asymptotically stable, which means that the disease will remain exist in the population. Simulation result shows that the vaccination would minimize the spread of disease by reducing the basic reproductive number. If the time for the vaccinated recipients to obtain the immunity, as well as a possibility of vaccinated recipients to be infected are neglected, then the disease will be eradicated. This condition is called an over-evaluating effect of vaccination.
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