Judul: Analisis Risiko Produksi Pembenihan Lele Sangkuriang Pada CV Dejee Fish Kabupaten Sukabumi
Abstrak: Sangkuriang catfish (Clarias sp) which lives in freshwater habitats, has a good economic value. One of the companies that work’s on the cultivation of sangkuriang catfish is CV Dejee Fish, located at Cibaraja’s Fish Market, Cisaat, Sukabumi. Unfortunately, this business is highly related to several risks such as production risk where CV Dejee Fish production fluctuates in a high manner. The object of this study is to identify the sources of production risk, the chances, the impact, and some alternative strategy to handle the risk. The sources of production risk are identified as fungi, water quality, fish feed, and harvesting technic. Furthermore, in order to understand how big the chances and impact of the risk are, Z-score and VaR analysis tool is used. Results from the research shows that on the per period per hetchery, the risk probability from fungi is 40 percent, water quality 44 percent, feeds 5 percent, and harvesting technic 4 percent. The impact of the risk from fungi cost is Rp 5 795, water quality Rp 4 937, feeds Rp 3 388 and harvesting technic Rp 3 736.
Keyword: Bogor Agricultural University, Production of risk, Z-score, Analisis sumber risiko produksi, Analisis peta resiko

Judul: Analisis Risiko Produksi Pembenihan Ikan Lele Sangkuriang Pada Saung Lele di Kampung Jumbo Sukaraja Kabupaten Bogor
Abstrak: Catfish was one of the consumption fish that has been cultured in Indonesia which has good prospect. The high number of catfish consumption demand, causing the request of catfish seed increasing. Bogor regency was the largest catfish-producing region in the province of West Java and has been designated to be regional aquaculture minapolitan region. Bussiness who work in the breeding of catfish om Bogor regency was Saung Catfish. Entrepreneur was faced with the SR fluctuation problem that indicate a risk of production. In identifying the sources of risk was used descriptive method. Quantitative methods used in counting probability using the Z-score and calculate the impact of using VaR. Sources of production risks contained in catfish hatchery business Sangkuriang at Saung Catfish were pests, disease, water quality, and cannibalism. The analysis result of the probability or the possibility risk arise, i.e. : 1) the pest by 35.6 percent, 2) disease of 29.1 percent, 3) water quality by 40.5 percent, and 4) cannibalism of 34.1 percent. The analysis results of the risk impact, i.e : 1) pest as much Rp. 793 146, 2) disease in amount of Rp. 734 049, 3) water quality of Rp. 1,075,684, and 4) cannibalism in amount of Rp. 956,926. Risk production management strategies for pest risk source, water quality, and cannibalism was by prevention. While the source of risk on disease was handled by manage the maintenance medium properly.
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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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