Judul: Analisis Kelayakan Usahaternak Sapi Perah pada Alda Alya Dairy Farm di Kecamatan Tambun Selatan, Kabupaten Bekasi
Abstrak: The availability of national milk has not been able to meet the needs of milk, only about 21 persen in 2013. While existing market potential was quite large with the increasing number of population. Alda Alya Dairy Farm took that chance and opened dairy farming on 2007. However, the investments made in the business requires substantial capital investment and a long payback. Therefore,it was necessary to conduct research on the feasibility analysis of dairy cattle farming. The feasibility analysis of dairy farming conducted on the feasibility of financial and nonfinancial. Nonfinancial feasibility was done based on market aspects, technical aspects, management and legal aspects, and social, economic, and environmental aspects. While the financial feasibility was measured by investment criteria such as NPV, IRR, Net B/C, Gross B/C, and Payback Period. In addition, there was a switching value analysis on components of lower sales volume and an increase in feed costs. Based on the results of the analysis of both financial and nonfinancial feasibility, Alda Alya Dairy Farm is feasible to run.And based on switching value analysis Alda Alya Dairy Farm more sensitive to components of lower sales volume.
Keyword: milk., dairy cattle, farming, feasibility, investment

Judul: Analisis Kelayakan Pengembangan Usaha Peternakan Sapi Perah KUNAK (Studi Kasus Usaha Ternak Kavling 176, Desa Pamijahan)
Abstrak: Milk is one of farm commodities with high consumption level. But, the gap between production and consumption of milk requires us to import from the other country. Furthermore, business developments necessary in order to fulfill the needs of national milk consumption. ‘Kavling 176’ is one of the farm that increases milk production. There for it needs feasibility analysis to ‘kavling 176’. Feasibility analysis is used to determine (1) non financial aspect of the business; (2) business development opportunities of the financial aspect; (3) sensitivity analysis of business. The method used in the financial aspect are Net Present Value (NPV), Internal Rate of Return (IRR), Net B/C Ratio, Payback Period (PBP) and Break Event Point (BEP). Based on the objective, obtained the following result as : (1) business are feasible according to the non financial aspect; (2) business development can be carried out with value NPV Rp 292.514.822,00, IRR 25,93%, Net B/C Ratio 1,42, PBP 2.83 years, and BEP Rp 225.155.564,00; (3) business are sensitive in decrease production of 22% and conditions combined 63%.
Keyword: sensitivity analysis, milk, non financial, financial, feasibility analysis

Judul: Kruskal Coordinates in 4+1 Dimensional Schwarzschild  Spacetime Geometry
Abstrak: Koordinat Kruskal adalah hasil ekstensi maksimal dari koordinatSchwarzschild yang menimbulkan interpretasi baru tentang keberadaan wormhole. Secara teori, wormhole adalah struktur yang menghubungkan dua titik berbeda dalam ruangwaktu. Namun, ukuran wormhole terlalu kecil untuk dapat dilalui dan tidak stabil sehingga mudah runtuh. Penelitian ini bertujuan mendapatkan solusi koordinat Kruskal untuk geometri Scwarzschild pada dimensi yang lebih tinggi yang dapat berguna untuk menganalisis kestabilan wormhole. Penelitian ini dilakukan melalui penambahan dimensi ruang dari 3+1 dimensi menjadi 4+1 dimensi untuk mendapatkan geometri Schwarzschild, koordinat Eddington-Finkelstein, dan koordinat Kruskal dengan memanfaatkan gerak radial foton. Hasil akhirnya, solusi geometri ruangwaktu Schwarzschild dalam koordinat Kruskal dapat dibentuk dan diilustrasikan dalam diagram Kruskal. Diagram tersebut menunjukan sebuah black hole, white hole, dan dua alam semesta yang dihubungkan oleh wormhole., The Kruskal coordinates are the maximal extension of the Schwarzschild coordinates which give rise to new interpretations of the existence of wormholes. In theory, a wormhole is a structure that connects two different points in spacetime. However, the size of the wormhole is too small to pass through and is unstable so that it collapses easily. This study aims to obtain Kruskal coordinate solutions for the Scwarzschild geometry in higher dimensions which can be useful for analyzing wormhole stability. This research was carried out by adding space from 3+1 dimensions to 4+1 dimensions to obtain Schwarzschild geometry, Eddington Finkelstein coordinates, and Kruskal coordinates by utilizing the radial motion of photons. The final result, the solution of the Schwarzschild spacetime geometry in Kruskal coordinates can be formed and illustrated in a Kruskal diagram. The diagram shows a black hole, a white hole, and the two universes connected by a wormhole.
Keyword: Schwarzschild geometry, Eddington-Finkelstein coordinates, Kruskal coordinates, radial motion of photons, wormhole