Judul: Fisheries Development Analysis of Purse Seine Fisheries Aceh Besar District
Abstrak: Purse seine is one the productive fishing gear for fishing pelagic fishes. Fishing capacity is one the important issue in sustainable fisheries. This study aimed to measure fishing capacity of purse seine in Aceh Besar district, estimated the maximum economic yield (MEY) the targeted pelagic fishes, and formulate management strategies purse seine in the district of Aceh Besar. Fishing capacity was analyzed using the data envelopment analysis (DEA) method based on fishing capacity efficiency of monthly total catch as single output, from September 2009 to August 2010. Fishing vessel was used as decision making unit (DMU). Fixed input consists gross tonnage (GT), engine horse power (HP) and length of webb. Variable input consists number of crew, lamp power (watt), hold capacity (ton), and number of trip. The result showed that fishing capasity, 17 vessels reached optimum (CU=1), and fishing capacity of purse seine was 257 ton/year/unit. Thus bioeconomic analysis of pelagic fishes showed that MEY reached at 3,753.37 ton/year and optimum effort at 8,623 trip/year with total cost Rp 34,992,314,500 year and total revenue Rp 51,643,083,629. Management strategy for purse seine fishery in Aceh Besar district is the development of technology, human resource development and the role of institutions such as institutions laot commander.
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Judul: Strategi pengembangan usaha perikanan pelagis kecil di Perairan Utara Provinsi Aceh
Abstrak: Small pelagic fish represent fishery resources which are at most laboured by coastal communities because easy to cacth and big potency, inclusive in north territorial water of Aceh . PPN Lampulo is a main location of small pelagic fishery activities in Banda Aceh City and Province of Provinsi Aceh. This location is very strategic to open a catching fishery effort because near with the downtown, especially fish market so the fishers who also need daily necessary equipments won’t cost big amount of money. This research aim to analyze maximum sustainable yield (MSY) of small pelagic resources, to analyze financial feasibility of small pelagic fisheries effort, to determine small pelagic fishing units according technical aspect, serfaireble aspect, and the continueing, and to formulate development strategy of small pelagic fisheries effort. The method of research are standard analysis of fishing unit, biological aspect analysis, financial analysis (NPV, IRR, and B/C Ratio), scoring analysis, and hierarchy analysis. Maximum sustainable yield (MSY) of small pelagic resources in north territorial water of Aceh are estimated 15479 tons per year and F-optimum are 4896 trips. If compared by a annual production (7069,35 ton), hence the utilization of small pelagic resources about 45,67 %, so this condition gives development opportunities in the future. From nine type of fishing unit to catch small pelagic fish in north territorial water of Aceh, there are four chosen as sustainable fishing units according technical aspect, biological aspect, and the sutainable aspect. They are drift gillnet (VA = 2,927), purse seine (VA = 2,575), payang (VA = 1,657), and beach seine (VA = 1,319). Gillnet, purse seine, boat seine, beach seine are feasible to develop in the location, because have NPV > 0, IRR > 6,25 %, and B/C ratio > 1. Strategy priority to develop small pelagic fisheries effort in north territorial water of Aceh, re-management of small pelagic fishing bussness are : empawerment of human resources ( RK = 0,214, II = 0,05), sequerly ( RK = 0,196, II = 0,05), development of fishing technology precisely (RK = 0,180, II = 0,05), development of skim credit to fisheries effort (RK = 0,145, II = 0,05), and development of exploitation and restocking zone (RK = 0,137, II = 0,05), and repair of management system of re-management of fisheries infrastructure system ( RK = 0,126, II = 0,05). As first priority, construction strategy of human resources being of stable to intervention of fishermen and government.
Keyword: Fisheries, Aceh, Fisheries infrastructure system

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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