Judul: Strategy for Handling Abandoned Ships in the Karangantu Fishing Port, Banten Province
Abstrak: Pelabuhan Perikanan Nusantara Karangantu yang terletak di Desa Banten, Kecamatan Kasemen, Kota Serang, Provinsi Banten mengalami permasalahan kapal perikanan yang tenggelam dan terbengkalai di sepanjang alur pelayaran yang menyebabkan aktivitas operasional pelabuhan menjadi terganggu. Oleh karena itu, perlu adanya penelitian mengenai faktor penyebab banyaknya kapal terbengkalai serta strategi penanggulangannya. Penelitian ini bertujuan untuk mengidentifikasi kapal terbengkalai, faktor-faktor penyebab kapal terbengkalai, serta strategi penanggulangannya. Metode yang digunakan yaitu analisis deskriptif dan Diagram Ishikawa. Hasil yang diperoleh yaitu kapal terbengkalai di PPN Karangantu berjumlah 47 kapal dengan faktor penyebabnya yaitu belum adanya peraturan terkait kapal perikanan yang terbengkalai, peranan pelabuhan yang belum optimal, kurangnya koordinasi antar lembaga, serta tidak bertanggungjawabnya pemilik kapal. Strategi penanggulangan kapal terbengkalai di wilayah PPN Karangantu melalui cara perumusan kajian mengenai kapal perikanan yang terbengkalai, peningkatan koordinasi antar lembaga yang berada di wilayah Karangantu, peningkatan peranan pelabuhan, serta peningkatan kesadaran para pemilik kapal., Karangantu fishing port is in Banten Village, Kasemen District, Serang City, Banten Province has experienced problems related to sunken and abandoned fishing vessels along the port shipping lanes, which has disrupted port operational activites Therefore, it is necessary to research the factors that cause the number of abandoned ships and their countermeasure strategies. This research aims to identify abandoned ships, factors that cause abandoned ships, and their countermeasure strategies. The method used uses descriptive analysis and Ishikawa Diagram. The results obtained are that there are 47 abandoned ships in Karangantu fishing port with the causal factors being the absence of detailed regulations related to abandoned fishing vessels, the role of ports that are not yet optimal, lack of coordination between institutions, and the irresponsibility of ship owners. The strategy to overcome abandoned ships in the Karangantu fishing port area can be through the formulation of study of abandoned ships, increased coordination between institutions whose are in the Karangantu area, and increased awareness of ship owners.
Keyword: identification, strategy, abandoned ship, Karangantu fishing port

Judul: Mooring and Anchoring Services Enhancement for Purse Seiner at Pengambengan Fishing Port
Abstrak: Pelabuhan Perikanan Nusantara (PPN) Pengambengan memiliki fungsi pemerintahan berupa pelayanan jasa tambat labuh kapal perikanan. Jasa tambat labuh tersebut dirasa kurang karena terdapat 20 kapal slerek (Purse Seine) yang memilih untuk berlabuh di luar kolam pelabuhan. Penelitian ini bertujuan untuk mengoptimalkan jasa tambat labuh kapal slerek dengan mengidentifikasi aktivitas pendaratan hasil tangkapan serta faktor-faktor yang mempengaruhi nelayan untuk menambatkan kapal, kemudian dirumuskan strategiyang dapat diambil oleh pihak pelabuhan. Penelitian dilakukan melalui observasi secara langsung dan wawancara terhadap nelayan dan aparatur pelabuhan menggunakan metode purposive sampling. Hasil penelitian menunjukkan bahwa terdapat penurunan pendapatan retribusi sebesar Rp146.804.400,00 per tahun akibat nelayan yang memilih untuk berlabuh di luar kolam. Didapatkan pula faktor yang mengakibatkan nelayan tidak bertambat di dermaga seperti sedimentasi, tarif mahal, letak kapal tidak teratur, dan tidak adanya hukum yang memaksa. Strategi kemudian dirumuskan menggunakan pembalikan akar masalah pada diagram fishbone., Pengambengan fishing port had government function in the form of mooring and anchoring services for fishing vessels. The services was inadequate since there were 20 purse seiners anchoring outside the pool. This research aims to optimize purse seiners mooring services by identify unloading activities and factors that influence fishermen to moor ships, then formulating strategies that can be done by the port. The research was conducted through direct observation and interviews with fishermen and port officials using the purposive sampling method. The results show that there was reduction in income for IDR 146.804.400,00 per year due to fishermen choose to be anchoring outside the pond. It was also found that factors resulted in fishermen not mooring at the wharf, such as sedimentation, high rates, irregular boat locations, and the absence of compelling laws. The strategy was then formulated by reversing the root cause from fishbone diagram.
Keyword: sedimentasi, pelabuhan perikanan, tambat labuh, anchoring, fishing port, sedimentation

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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