Judul: Business Analysis of Pangasius Catfish (Pangasionodon hypophtalmus) Hatchery and Black ghost Fish (Apteronotus albifrons) Hatchery. (Case Study of Farmers’s Group, Tania aquaculture)
Abstrak: Analisis Usaha Pembenihan Ikan Patin (Pangasionodon hypophthalmus) dan Pembenihan Ikan Black ghost (Apteronotus albifrons) (Studi Kasus Kelompok Tani, Tania Akuakultur). Dibimbing oleh RACHMAT PAMBUDY Rendahnya produktivitas pembenihan ikan patin dan tingginya permintaan ikan hias, khususnya ikan black ghost yang belum bisa dipenuhi oleh produsen mendorong upaya kelompok tani Tania Akuakultur yang mulanya adalah kelompok tani yang berfokus pembenihan ikan patin mencoba diversifikasi pembenihan ikan black ghost. Tujuan dari penelitian ini adalah menganalisis tingkat keuntungan dan efisiensi biaya pada masing-masing pembenihan ikan patin dan ikan black ghost. Metode pengambilan data yang dipakai yaitu metode sensus yaitu metode mengambil satu kelompok populasi sebagai sampel secara keseluruhan dan menggunakan kuesioner yang terstruktur. Berdasarkan hasil analisis menunjukan bahwa pembenihan ikan patin lebih efisien dan menguntungkan. Namun, pembenihan ikan black ghost memiliki tingkat resiko baik produksi, harga, dan pendapatan yang lebih rendah. Sehingga kedua ikan masih bisa melakukan bisnis oprasionalnya bersamaan.
Keyword: Hatchery culture, pangasius catfish, black ghost fish, cost of structure

Judul: Analisis Kelayakan dan Strategi Pengembangan Usaha Pembenihan Ikan Patin (Pangasius hypophthalmus) (Studi Kasus pada CV. Mika Distrindo)
Abstrak: The development of larva production of Patin catfish has great potential to meet market demand. In this case, Lampung is one of Patin catfish enlargement center which has large aquaculture production than others. Production of Patin catfish in Lampung, in 2010 was 19.565 tonnes. Demand of Patin catfish larva is taken to anticipate, so in the future, no need to bring out the larva from the other region. Obstacles and constraints faced by the company, mainly by CV. Mika Distrindo are very diverse, from each stage of production until marketing process. Therefore, it is needed a development strategy to increase production to meet demand of Patin catfish larva for Metro region and surrounding areas. The aims of this study were: (1) To obtain information on the production process of breeding Patin catfish; (2) To know the feasibility of Patin catfish breeding; and (3) To carry out the strategy of seeding to obtain maximum profit. The analysis used descriptive and analytical methods which data that have been collected will be described or portrayed as it is. The data were collected through interviews, observation and literature study. Method of analysis was done with (1) a descriptive analysis of the production process for a portrait Patin catfish hatchery; (2) Analysis of the feasibility using Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit Cost (B/C) Ratio, Gross Benefit Cost (B/C) Ratio, Pay Back Period (PBP), and Break Even Point (BEP); (3) Analysis of internal and external matrix are using Internal Factor Evaluation (IFE) and External Factor Evaluation (EFE) matrix, and in combination in a matrix of Internal External (IE); 4) Strengths, Weaknesses, Opportunities, Threats (SWOT) matrix analysis to formulate strategic alternatives; and 5) Analysis Quantitative Strategic Planning Matrix (QSPM) for alternative decision priorities. The study results shows that CV. Mika Distrindo is feasible because the business get the financial benefit. Indications in terms of financial feasibility is known from Rp.516.660.510,- of NPV; 21.42% of IRR; 5.57 of Gross B/C Ratio; 4.05 of Nett B/C Ratio; 10 months and 5 days of PBP and 2.698.006 of larva production or Rp.539.601.139,60 of the value of sales. IFE score is 2.511 and EFE score is 2.565. The Company core strategy is Growth/Stability Strategy. The SWOT analysis obtains formulation of strategies including the use of advances in technology, expansion of marketing network, strengthening capital, increasing sales volume, doing partnerships, taking advantage of investors, increase customer loyalty, maintain larva quality, improved system management and collaboration with stakeholders.
Keyword: 

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.
Keyword: