Judul: Analisis Usahatani penangkaran benih padi dan padi konsumsi (Studi kasus di Desa Gunung Sari Kecamatan Pamijahan Kabupaten Bogor).
Abstrak: The Gunung Sari village is one of village located in the district Pamijahan is one of the centers of rice seed in Bogor regency each season seed paddy did not continue as the other districts are not doing the rice seed each season. Sari was a mountain village in terms of the topography of the land suitable for the cultivation of rice and rice seed. Sub Pamijahan experienced production is not conformity with the sales, unsold seed presence in the District Pamijahan will cause farmers' income breeders become smaller because the price at the farmers received seeds and rice farmers will be higher consumption of rice farmers seeds so farmers are so breeders will tend moved back into the consumption of rice farmers. The results obtained seed farming more profitable with the consumption of rice farming. Keywords: revenue, earnings and balance ratio receiving a cost
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Judul: Analisis Pendapatan Usahatani Padi dengan Pemanfaatan Limbah Ternak Sapi Potong (Studi Kasus: Desa Sukajadi, Kecamatan Cariu, Kabupaten Bogor)
Abstrak: The majority of Indonesian people is still being a farmer for their livelihood. This research objective were to identify performance of paddy farming with waste animal husbandry utilization, to analyze cost structure and income efficiency of paddy farming, and to analyze factors that influenced farmers to do paddy farming with waste animal husbandry utilization. Paddy farming performance of this research seen by time of plant, land preparation, seedbed, planting treatment, labor utilization, and agriculture waste production with descriptive analysis method. Cost structure and income efficiency were analyzed by using percentage of the total cost and R / C ratio method while factors that influence farmers' decisions was analyzed by using logistic regression. This research conducted at Sukajadi Village and respondents of this research were 30 farmers who utilize waste and 30 farmers who do not use waste. Based on research result showed that the performance of rice paddy farming which used waste utilization was still using a simple technical cultivation. Farmers who utilize waste made savings of fertilizer costs of 4.30%. So, the farmers who utilize waste made savings of cost production by 6.78%. Difference of income based on cash of cost production who accepted by farmers used utilize waste are Rp 435 826 /ha/season. Difference of income based on totally cost production who accepted by farmers used utilize waste are Rp 284 069/ha/season. Value of R/C ratio based on cash of cost production and totally cost production indicate that paddy farming with and without waste animal husbandry utilization were worth it and gave advantage for farmers. Factors that influenced farmers decision to do paddy farming with waste animal husbandry utilization were influenced by paddy farming income, the cost of chemical fertilizer for one growing season, burden of farmer, and education of farmers.
Keyword: waste animal husbandry, paddy farming, income analysis

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