Judul: Characteristics of Crab Gillnet and Bottom Gillnet at Karangantu Fishing port, Banten
Abstrak: Kegiatan penangkapan ikan dilakukan berdasarkan cuaca sehingga pendapatan yang diterima oleh nelayan tidak menentu sehingga terdapat hari-hari dimana nelayan tidak memiliki penghasilan. Penelitian ini dilakukan untuk mengidentifikasi sistem bagi hasil antara nelayan penggarap dengan nelayan pemilik, dengan terlebih dahulu mengidentifikasi kondisi eksisting nelayan penggarap yang termasuk nelayan kecil (≤5GT) terkait dengan dimensi kapal, biaya operasional dan pendapatan. Berdasarkan hasil penelitian diketahui desain kapal jaring rampus dan rajungan memiliki perbedaan bentuk dimana kapal jaring rajungan berbentuk double pointed, sedangkan kapal jaring rampus berbentuk transom. Sitem bagi hasil antara pemilik kapal dan nelayan untuk unit penangkapan ikan jaring rajungan dan jaring rampus di PPN karangantu adalah sama. Hasil penjualan hasil tangkapan tiap trip setengah bagian diberikan kepada pemilik kapal setengah bagian lagi dikurangi baiaya operasional yang telah dikeluarkan trip oleh pemilik kapal kemudian dibagi jumlah ABK kapal, Fishing activities are carried out based on the weather so that the income received by fishermen is uncertain, there are days when fishermen do not have income because they cant go fishing. This research was conducted to identify a profit sharing system between tenant fishermen and owner fishermen, by first identifying the existing conditions of working fishermen, including small fishermen (≤5GT) related to ship dimensions, operating costs and income. Based on the research results, it is known that the design of Bottom Gillnet and Crab Gillnet has different shapes where the crab gillnet have double pointed shaped, while the bottom gillnet are transom shaped. The profit sharing system between boat owners and fishermen for small crab gillnet and bottom gillnet fisheries at PPN Karangantu is the same. Where the proceeds from the sale of the catch for each half part trip are given to the owner of the ship for the other half minus the operational costs that have been incurred by the trip by the ship owner then divided by the number of crew.
Keyword: Karangantu Banten, Jaring Rajungan, Jaring Rampus, Kapal Rajungan, Kapal Rampus, Profit Sharing, Fishing Boat Design, PPN Karangantu, Fisherman relationship

Judul: The Level of Welfare of Drift Gillnet Fishers at the Karangantu Fishing Port Banten
Abstrak: Hasil tangkapan yang didapatkan oleh nelayan tidak selalu sama dalam setiap trip penangkapan, tidak jarang nelayan mendapatkan hasil tangkapan sedikit. Hasil tangkapan mempengaruhi besar kecilnya pendapatan nelayan. Pendapatan nelayan yang tidak pasti menyebabkan nelayan mengalami kesulitan ekonomi dan berdampak terhadap tingkat kesejahteraan nelayan. Tujuan penelitian ini adalah mendeskripsikan kegiatan perikanan jaring rampus, mengklasifikasikan tingkat kesejahteraan nelayan jaring rampus, dan menganalisis pengaruh pendapatan nelayan terhadap kesejahteraan nelayan jaring rampus di PPN Karangantu. Metode pengumpulan data yang digunakan adalah metode observasi dan wawancara. Data dianalisis menggunakan analisis deskriptif, dan analisis kesejahteraan menurut indikator BKKBN, dan analisis regresi linier sederhana. Hasil penelitian ini menunjukkan bahwa kegiatan perikanan jaring rampus di PPN Karangantu menggunakan ukuran kapal 2-5 GT dengan ikan hasil tangkapan yang dominan yaitu ikan kembung dan pendapatan nelayan jaring rampus yang diperoleh dalam satu kali trip melaut sebesar Rp499.000,- hingga Rp2.729.688,-. Nelayan jaring rampus di PPN Karangantu termasuk kedalam kategori Keluarga Pra Sejahtera sebesar 9%, Keluarga Sejahtera I sebesar 63%, dan Keluarga Sejahtera II sebesar 28%. Pendapatan memiliki pengaruh sebesar 16% terhadap kesejahteraan dan 84% nya dipengaruhi faktor lain., The catches obtained by fishers are not always the same in every fishing trip, it is not uncommon for fishers to get small catches. The catch affects the size of the fisher’s income. Uncertain fisher’s income causes fishers to experience economic difficulties and has an impact on the level of fishers welfare. The purpose of this research is to describe drift gillnet fishing activities, classify the level of welfare of drift gillnet fishers, and analyze the effect of fisher’s income on the welfare of drift gillnet fishers in PPN Karangantu. Data collection methods used are observation and interview methods. Data were analyzed using descriptive analysis, and welfare analysis according to BKKBN indicators, and simple linear regression analysis. The results of this study indicate that drift gillnet fishery activities in PPN Karangantu use a boat size of 2-5 GT with the dominant catch of fish, namely mackerel and drift gillnet fishers income earned in one trip to sea of IDR499.000,- until IDR2.729.688,-. Drift gillnet fishers in Karangantu PPN are included in the Pre-Prosperous Family category by 9%, Prosperous Family I by 63%, and Prosperous Family II by 28%. Income has an influence of 16% on welfare and 84% of it is influenced by other factors.
Keyword: jaring rampus, PPN Karangantu, pendapatan nelayan, tingkat  kesejahteraan nelayan

Judul: The Exploration of Discrete Logarithm over Finite Field GF(3m)
Abstrak: The security of many public~key algorithms is based on the problem of finding discrete logarithms. The generalized discrete logarithm problem is the following: given a finite cyclic group G of order n, a generator a of G, and an element fl E G, find the integer x, 0 ~ x ~ n - 1, such that 0: = fl. Algorithm for discrete logarithm problem focused on Menezes et al. (1997) that consist of exhaustive search algorithm, the baby-step giant-step algorithm, Pollard's rho algorithm, Pohlig-Hellman algorithm, and index-calculus algorithm. These algorithms are explorated to be used in discrete logarithm problem over finite field GF(3m ). The exploration also produces some algorithms, i.e. naif negative algorithm, baby-step mother-step algorithm, baby-step mother free-step algorithm, and baby-step free-step algorithm. All algorithms implemented using Maple 11. The Pohlig-Hellman and baby-step giant-step algorithms are efficient enough to be used in discrete logarithm problem over finite field GF(3m ) for m < 20.
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