Judul: Analisis Kelayakan Usaha Konveksi Kulit Domba di Perusahaan Perorangan Kulit Kalong, Bogor
Abstrak: There is a number of UMKM in Indonesia which increase 1.44 percent a year. This is the main attraction to open a business convection sheep leather view of each year business of Sheep Leather Convection has increased turnover by an average of 10 percent. This study aims to analyze a feasibility study the business of Sheep Leather Convection. Data analysis method uses both qualitative and quantitative that contains non financial aspects and financial aspects. The qualitative consists of market aspects, technical aspects, management & legal aspects, and social, economic, and environmental aspects. In order to provide better feasibility on financial aspects, the quantitative consists several criteria which are NPV, Net B/C, IRR, and Payback Period and the switching value. The results of this study demonstrates that Sheep Leather Convection has a sufficient feasibility for financial aspects and non financial aspects.
Keyword: switching value, sheep leather, feasibilty

Judul: Analisis Kelayakan Usaha Penggemukan Domba Pada Mitra Tani Farm, Kecamatan Ciampea, Kabupaten Bogor
Abstrak: Sheep is the third biggest contributors of ruminant families for meat national product. MT Farm is one of a farm-based agribusiness companies that planning to expand its business to fulfill market requirements. The aim for this study to analyzing the feasibilty of sheep business expansion at MT Farm based on financial and non financial aspects. This study also analyzing sensitiveness levels of business expansion by Switching Value Analysis. Result of this study shows that business expansion by analyzing non financial aspects is feasible to run. Result of financial analysis is also feasible to run based on investment criteria, that NPV Rp 566,181,930, Net BC is 2.01, and IRR is 22.55 percent of Payback Period means investment costs will return in two years four months and one day. While Switching Value Analysis shows the ascend limit of sheep’s mortality is 2.107109305 percent, so ascending in prices of lamb is 3.1854194939394 percent. Switching Value Analysis shows that ascending of sheep’s price give more influences than ascending of sheep’s mortality.
Keyword: sheep, feasibilty analysis, farm, business expansion

Judul: Simulasi persamaan keadaan bintang dengan pendekatan klasik dan relativistik
Abstrak: Komposisi bintang yang selalu berubah akanmempengaruhi massa dan radius bintang itu sendiri. Dimana semakin tua sebuah bintang, maka bintang akan didominasi oleh unsur-unsur berat. Dengan persamaan politrop dan metode Runge-Kutta orde 4 didapatkan radius dan massa bintang semakin berkurang seiring berkurangnya nilai Ye, sedangkan kerapatan semakin meningkat. Pendekatan terbaik terdapat pada nilai Ye sebesar 0.5 dimana didapatkan bahwa massa bintang katai putih sebesar 1.4Mo sesuai dengan massa Chandrasekhar dengan radius bintang 5000 km dan nilai kerapatan bintang sebesar 5.31x 106 g cm-3. Untuk massa bintang neutron diperoleh nilai 0.05Modan radius bintang sebesar 2300 km, sedangkan kerapatannya bintang neutron diperoleh sebesar 1.84 x 107 g cm-3 dengan menggunakan pendekatan relativistic. Pendekatan relativistic terbukti lebih baik untuk menentukan radius dan massa bintang, dengan pendekatan terbaik pada nilai Ye sebesar 0.5 yaitu pada bintang katai putih
Keyword: Composition of the stars, density of the stars, mass of the stars, radii of the stars