Judul: Analisis Usaha Pengolahan Gula Kelapa Skala Rumah Tangga di Desa Ujung Genteng, Kabupaten Sukabumi, Jawa Barat
Abstrak: Coconut palm sugar is a type of sugar that produced by tapping the sap of coconut palm flowers that have yet to bloom. The saps are boiled down until it ready for molding in solid form. The objective of this study is to analyze the revenue, cost, profit, and profitability of the household’s coconut palm sugar processing at the Ujung Genteng Village, Sukabumi, West Java. The result shows that for each production process each household expense production cost around Rp 742,414.28, and obtains revenue over Rp 1,350,000 in the average. Thus, each household for each production process gains profit as much as Rp 607,585,72. The profitability and the efficiency of household’s coconut palm sugar processing reach 0.82 and 1.82 respectively.
Keyword: Sap, Coconut Palm Sugar

Judul: Efisiensi Produksi Usaha Pengolahan Gula Kelapa Kabupaten Banyumas Provinsi Jawa Tengah
Abstrak: Cilongok Subdisrict is the lagerst origin centers of palm sugar production center in Banyumas. The business of making palm sugar has been carried out to the next so that the business of making palm sugar is the main livelihood of the people in the Cilongol district. During palm sugar producers in District Cilongok make palm sugar in printed form, but these efforts have not been able to provide an economic improvement for the people working on it. Therefore, the local government by cooperation with the university created a coconut sugar alternatives in the form of powder or commonly referred to as granular sugar. The objective of this research is to analyze the general costs, revenues, profits and efficiency of use of factors of production print sugar and sugar processing SEMT in order to achieve the level of economic efficiency. In detail, the objective of this research are (1) to analyze the factors that affect print sugar and granular sugar processing business; (2) to analyze the level of technical efficiency, allocative efficiency and economic efficiency of sugar printing and granural sugar processing business; (3) analyze the costs, revenues and profits from sugar printing and granural sugar processing business and sugar granular. The model used is the stochastic frontier production function is Cobb-Douglas to analyze technical efficiency, cost function dual to analyze the allocative efficiency and cost analysis and revenue processing print sugar and sugar granular. The results of the sugar processing business printing and granular sugar business showed the craftsmen sugar granural income was much larger when compared to sugar producers print, ie respectively USD 2.35 million and USD 3.42 million. This occurd because the selling price of sugar granular are much higher than the selling price of sugar print. The average selling price of sugar print only Rp 7,582.86 per kilogram, while the average selling price of sugar granular could reach Rp 12,742.86 per kilogram. The main factors that affect the manufacture of sugar and sugar granullar print is coconut sap. Age of the coconut tress are old average in Sub Cilongok make quality juice produced less well, besides the lack maintenance performed on an existing coconut trees. Pengolaha business scale print sugar and granular sugar in District Cilongok arrives at the "increasing returns to scale" which indicates that the proportion of additional factors of production will result largest propotion of additional production.
Keyword: Cobb Douglas stochastic frontier, business analysis, efficiency, processing business, print sugar and granular sugar

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