Judul: Institutional Analysis Panglima Laôt Lhôk in Purse Seine Fishery Management Activities in Sub-District Muara Batu, North Aceh Regency
Abstrak: Alat tangkap purse seine berpengaruh besar terhadap kelestarian sumberdaya ikan di Perairan Kecamatan Muara Batu. Hal ini dikarenakan purse seine memiliki produktivitas hasil tangkapan yang tinggi, yang mendorong nelayan melakukan penangkapan sebanyaknya guna memperoleh keuntungan yang lebih besar. Oleh karena itu, pengelolaan kegiatan perikanan purse seine perlu dilakukan oleh Panglima Laôt Lhôk di Kecamatan Muara Batu. Penelitian dilakukan pada bulan Februari 2011 sampai dengan Maret 2011 bertujuan untuk mengetahui sistem kelembagaan Panglima Laôt Lhôk, mengetahui persepsi nelayan purse seine terhadap keberadaan Panglima Laôt Lhôk dan mengetahui unit penangkapan purse seine di Perairan Kecamatan Muara Batu. Metode penelitian yang digunakan adalah metode deskriptif dengan studi kasus. Analisis data yang dilakukan berupa analisis hukum, kelembagaan, persepsi nelayan, teknis, pasar dan finansial. Berdasarkan analisis hukum, hukum adat laut telah mendapatkan pengakuan dari hukum positif. Berdasarkan analisis kelembagaan, sistem kelembagaan yang dimiliki Panglima Laôt Lhôk menjadikan lembaga adat tesebut dapat berdiri kokoh di Kecamatan Muara Batu. Panglima Laôt Lhôk memiliki aturan khusus bagi nelayan purse seine mengenai batas wilayah penangkapan ikan. Berdasarkan analisis persepsi, nelayan purse seine masih memiliki tingkat persepsi sedang terhadap keberadaan Panglima Laôt Lhôk. Berdasarkan analisis teknis, purse seine di Kecamatan Muara Batu memiliki keragaman dalam hal konstruksi alat tangkap dengan tujuan hasil tangkapan berbeda pula. Berdasarkan analisis pasar, penjualan hasil tangkapan purse seine memberikan keuntungan berbeda pada tiap pelaku pasar. Berdasarkan analisis finansial, usaha perikanan purse seine layak dijalankan karena nilai karena TR>TC, R/C>0, NPV>0, Net B/C>1 dan IRR lebih tinggi dari tingkat suku bunga. Berdasarkan analisis sensitivitas, usaha perikanan purse seine sensitif terhadap kenaikan harga BBM.
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Judul: Analysis Comparison Fisheries of Purse Seine in Lampulo Fishing Port Banda Aceh
Abstrak: This research was realized in January - February 2013 at Lampulo Fishing Port Banda Aceh. The method was used in this study such as descriptive method and investing criteria analysis. The Respondent were determined by purposive sampling for arrest facilities ownership. The Patrons who have infrastructure (20 persons) to get repayment and clien (20 persons) also get it as a fee from their job. The purpose this study were: (1) Comparison financial feasibility of purse seine fisheries in Lampulo. (2) Analyzing profit-sharing system for every purse seine patterns in Lampulo The calculations results of the purse seine fisheries feasibility between the daily and weekly seems from the businesses criteria value respectively, there were adventages and repayment period was quickly too with ROI value is th greater than capital cost. Then, the investing feasibility calculation result in purse seine fisheries both of daily and the weekly were viewed of each investing criteria value, where NPV > 0, Net B/C > 1 and IRR> 10% than interest rate. It caused purse seine fishing businesses in Lampulo still qualified and feasible to continued. The profit-sharing traditional system in Lampulo showed unbalanced between patrons and clients income. The patrons income is greater. Moreover, profit-sharing among clients (fishing master, collector, mechanical dan ABK). Proceeds from sales of the fish (gross income) reduced by 35% (10% for treatment, 10% for Toke bangku, 10% for fishing master and 5% for the interpreter engine). Later, it was reduced with operational costs. The arrest result was shared between owners and clien based on the net income divided into 3 section, one part for the crew and the two parts to the owner.
Keyword: feasibility analisis, purse seine, patron clien, profit-sharing system

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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