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 Sumber Daya Ikan Kembung Lelaki (Rastrelliger kanagurta) yang Didaratkan di TPI Blanakan, Subang, Jawa Barat
Abstrak: Indian mackerel (Rastrelliger kanagurta) is one of the economically important fish landed in TPI Blanakan. The purpose of this research is to know surplus production model that best fits the characteristics of fisheries indian mackerel through the application of five models that Schaefer, Fox, Walter Hibron, Schnute, and Clarke Yoshimoto Pooley (CYP). Research was conducted from July to August 2013. Schaefer Model is the model most appropriate surplus production to basic management of fisheries for indian mackerel in TPI Blanakan, although the value of the coefficient of determination (R2) of only 36%. Based on the results of bioeconomic analysis that the actual condition of the ndian mackerel resource in Blanakan has experienced overfishing. Maximum catches sustainable and economically optimum level of effort is 49.808 kg/year and 493 trip/year. Management plan that can be done is to set up an attempt arrest and quota setting catches.
Keyword: management., TPI Blanakan, indian mackerel, surplus production model, bioeconomic analysis

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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