Judul: Pengembangan Model Perencanaan Untuk Pendirian Agroindustri Sutera Alam
Abstrak: A development planning model for the establishment of natural silk agroindustry is required to provide related information, modeling, and description the factors that influence natural silk agroindustry establishment. The development of this planning model is needed because the production of natural silk agroindustry sector in Indonesia have not been able to meet government targets to date. The research objective is to study various factors in raw silk agroindustry establishment, and to develop a planning model for raw silk agroindustry establishment. These factors are consisted of natural silk products market condition, production processes, factory layout, institutional business, and agroindustry establishment financial feasibility analysis. The models are made for raw silk agroindustry establishment consist of raw silk demand forecasting analysis model, silkworm cultivation and natural silk agroindustry alternative selection model, production processes technology model, factory layout planning model, institutional business model for natural silk agroindustry, and silkworm cultivation and natural silk agroindustry establishment financial feasibility analysis model. The development of this model is also equipped with transformation models that can provide decision alternatives in the application program form. The raw silk demand forecasting analysis model obtain that demand forcast for September 2009 is 5.686 kg raw silk. The silkworm cultivation and natural silk agroindustry alternative selection model conclude that the best location for silkworm cultivation and natural silk agroindustry establisment based on comparison method exponential analysis is Megamendung District. The silkworm cultivation and natural silk agroindustry establishment financial feasibility analysis model is designed based on intitutional model of partnership business with the core plasma system. In this model, the analysis consists of financial feasibility on the core company and financial feasibility analysis on the plasma. The results of the financial feasibility analysis on the core company showed that the percentage of net imports average substitution is 11% or equal to the amount of production capacity of raw silk yarn is 288 Kg per month, the company core’s net profit per year approximately Rp. 227.069.941, NPV is Rp. 167.415.828, PI is 1,10, ROI is 14,34%, BEP is 2.853 kg raw silk dan PBP during 5,09 years. Meanwhile, The result of financial feasibility analysis in plasma level with the mulberry maintenance area is about 1 Ha and the capacity of silkworm cultivation is about five box per period of maintenance that these activities feasible to run with net profit per year Rp. 7.851.240, NPV is Rp. 24.127.825, PI is 1,39, ROI is 14,03%, BEP is 584 kg cocoon, and PBP during 4,92 years.
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Judul: Studi Kelayakan Usaha Budidaya Ulat Sutera (Bombix mori L.) di Kecamatan Sukanagara, Kabupaten Cianjur, Provinsi Jawa Barat
Abstrak: Agro-industry activities of natural silk are intended to meet the demand for products made from silkworm thread and to increase the people's income. The demand for products made from silk threads both at home and abroad continues to increase from year to year. The world’s need for silk thread reaches 118,000 tons, while the domestic demand accounts for 700 tons. The world silk production decreased to 52,342 tons and Indonesia only produced 81.5 tons of silk yarn. This study aimed to determine the business feasibility based on non-financial aspects, financial aspects as well as determine its level of sensitivity. The study was conducted in Sukanagara District, Cianjur Regency from April 15 to May 15, 2010. The primary data were obtained through interviews with respondents and field observations. The secondary data were collected through interviews and traces of documents and other printed materials. The data were processed using Microsoft Excel 2007 software. The analysis was carried out for non-financial aspects (aspects of markets and marketing, technical and technological, management, human resource, social, judicial, and environment), and financial aspects (Net Present Value (NPV), Benefit-Cost Ratio Gross (gross B/C), Internal Rate of Return (IRR) and Pay Back Period (PBP)), as well as sensitivity analysis within the period of 10 years with the interest rate of 12%. Based on the resulted analysis of non-financial aspects, the silk worm farming is feasible. The financial analysis was based on three business scales of land area, namely business scale I (1 ha of mulberry), scale II (1.5 ha of mulberry), and scale III (2 ha of mulberry). Based on the business feasibility criteria, the silk worms farming businesses of scale I and II are feasible with NPV of Rp 8,688,681 and Rp 7,202,019; gross B/C of 1.17 and 1.08; IRR values of 33.99% and 20.55% and PBP of 2.75 years and 4.13 years respectively. Meanwhile the business scale III of silk worms is considered feasible if the development scenario is conducted by improving the farming of silk worm as many as 24 boxes/year with a NPV of Rp 12,649,681; gross B/C of 1.12; IRR of 26.06%, and PBP of 3.44 years. The cocoon price decrease of 10% is more influential (sensitive to) on the business condition rather than an increase of 10% in the operational cost. Silk worm businesses of scale I and III with the development scenarios remain feasible to operate despite a decline of 10% in cocoon price and an increased operating cost of 10%, whereas the silk worm business of scale II is not feasible to do.
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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