Judul: Analisis Tata Niaga Usaha Pembenihan Ikan Lele Sangkuriang Pada Unit Pembenihan Rakyat Bina Tular Desa Gadog Kabupaten Bogor.
Abstrak: Sangkuriang catfish is one of aquaculture commodity which is widely cultivated in Bogor. Its production was the highest in West Jawa region. The fish has a physical characteristic of smooth body, long body, not scaly like an ordinary fish, and fused with the caudal fin. UPR Bina Tular or commonly called the People's Hatchery Units established by few farmers. At first UPR Tular is a farmer group in hatchery, but in 2007 UPR Bina Tular changed into individual businesses owned by Mr.Endang. The difference in price at the farm level and the consumer make the analysis needed to be conducted. The anlysis methods used are marketing function, marketing institution, market structure, profit and cost ratio, farmer’s share and market conduct. The results show that an efficent trading system channels are channels I and II. Efficient trading system channel is a channel that has the smallest valueof the margin’s share and the biggest value of the largest farmers.
Keyword: Efficiency, UPR BINA TULAR, Trading system

Judul: Analisis kelayakan usaha pembenihan Lele Sangkuriang di kecamatan Megamendung kabupaten Bogor
Abstrak: Sangkuriang catfish hatchery operations is one of the business carried on by Abah Nasrudin in Bogor. The decline in seed production occurs affect profits. This study was conducted to analyze the aspects that affect the feasibility and calculate how sensitive affected to increased feed costs and a decrease in the amount of seed production, so it can be anticipated immediately when this condition occurs. Aspects that influence include financial and non-financial aspects. Both financial and non-financial business is said to be viable. Influence on the decrease in the number of seed production by 36,74% greater than the increase in feed costs by 188,91% that this measure can be eligible to run. Therefore, seed production continuity must be maintained.
Keyword: Bogor Agricultural University (IPB), sensitive, non-financial aspects, financial aspects, Catfish Sangkuriang

Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik