Judul: Analisis Bioekonomi Untuk Pengelolaan Sumber Daya Ikan tembang (Sardinella fimbriata) yang Didaratkan Di TPI Blanakan, Subang, Jawa Barat
Abstrak: Fringescale sardinella (Sardinella fimbriata) is a small pelagic fish which has economically important. The purpose of this study is to find out the economic aspects condition of the Fringescale sardinella (Sardinella fimbriata) population from the Bay of Banten. The models used in this study were Schaefer, Fox, Walter Hilborn, CYP, and Schnute surplus production models. Walter Hilborn models had a highest coefficient of determination (R2) value than the others surplus production models. This coefficient of determination (R2) value model was 69%, with maximum sustainability yield (MSY) was 171 940 kg/year and its effort (Fmsy) was 142 trip/year. Bioeconomic analysis of MEY was 171 095 kg/year and Fmey was 132 trip/year. Bioeconomic analysis showed that Factual value greater than Fmsy and Fmey. It indicate that Fringescale sardinella has been in overfishing condition economically. The better management regime is a regime management of MEY because it gets a catch effort and Total Cost that was smaller and larger profit than management of MSY and oppen access. As plan for fish management for Fringescale sardinella in TPI Blanakan are controlling the catches effort.
Keyword: TPI Blanakan, overfishing, Fringescale sardinella, surplus production models, bioeconomic analysis

Judul: Analisis Bioekonomi untuk Pengelolaan Sumber Daya Ikan Selar Kuning (Selaroides leptolepis, Cuvier dan Valenciennes) yang Didaratkan di PPN Karangantu
Abstrak: Yellowstripe scad (Selaroides leptolepis) is a small pelagic fish which has economically important. The purpose of this study is to find out the economic aspects condition of the Yellowstripe scad (Selaroides leptolepis, Cuvier and Valenciennes) population from the Bay of Banten. The models used in this study were Schaefer, Fox, Walter Hilborn, CYP, and Schnute surplus production models. Fox models had a highest coefficient of determination (R2) value than the others surplus production models. This coefficient of determination (R2) value model was 78%, with maximum sustainability yield (MSY) was 89.289 kg/year and its effort (Fmsy) was 2.462 trip/year. Bioeconomic analysis of MEY was 87.517 kg/year and Fmey was 2.001 trip/year. Bioeconomic analysis showed that Factual value greater than Fmsy and Fmey. It indicate that Yellowstripe scad has been in overfishing condition economically. The better management regime is a regime management of MEY because it gets a catch effort and TC that was smaller and larger profit than management of MSY and oppen access. As plan for fish stock management for Yellowstripe scad in PPN Karangantu are controlling the catches effort and gears selectivity.
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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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