Judul: Business analysis of papaya cutivation with land rent system
Abstrak: Agribusiness is an activity related to the agricultural sector in the broad sense-oriented domestic resources such as agriculture, plantation, forestry, animal husbandry and fisheries. One area of agribusiness that has good prospects for development is the cultivation of papaya farming Bangkok, because the market demand is still huge, rapid investment payback period, the price is relatively stable, and continuous harvest throughout the year. The market opportunity is still wide open, because the supply is currently still lacking. This situation is caused by fluctuations in the supply of papaya from the centers of cultivation was reduced by planting the land area is declining. As the object of study is the cultivation of papaya farm bangkok, Mr Asfuri located in the Village Prangkoan, Mertoyudan District, Magelang regency, Central Java. Currently running a business fathers Asfuri mostly by Bangkok papaya cultivation of leased land. The purpose of this study was to analyze the feasibility of planting papaya Bangkok with his own land, business feasibility analysis Bangkok with papaya farming leased land and the cultivation of papaya integration model of Bangkok's most profitable for entrepreneurs to raise papaya cultivation of Bangkok. Quantitative analysis carried out to analyze the feasibility of the financial aspects using the criteria of Net Present Value (NPV), Internal Rate of Return (IRR), Gross benefit and Cost Ratio (Gross B/C Ratio), Sensitifitas, and BEP analysis. NPV value of aquaculture in their own land is higher at Rp 103,793,371.93, while cultivating the land lease Rp 60,069,785.97. This shows that the net benefits received from cultivation in their own land is greater than in the land lease. Judging from the value of Gross IRR and B/C, indicating that the value of Gross IRR and B/C for all the cultivation is > 0, so that both are good at cultivating their own land or on leased land eligible to run. When viewed from the BEP, the BEP for the cultivation of the land itself is 1.548 units and $ 6,190,661, while for the cultivation of the land rent is 6.972 units and $ 10,457,406.67. Comparison of financial feasibility between the two object cultivation shows that of both types of businesses, the cultivation of the land itself is a more viable business cultivated. It can be seen from the financial eligibility criteria of the cultivation the land itself has a better value.
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Judul: Analisis Kelayakan Usaha Paprika Hidroponik (Kasus Di Kebun Produksi PT Saung Mirwan, Kecamatan Megamendung, Kabupaten Bogor, Jawa Barat)
Abstrak: Horticulture is one of the agricultural sub-sector has an important role in Indonesian economy. Vegetables has great contribution to GDP from horticultural commodity groups. In 2011, vegetables had the highest growth percentage compared to the other three groups of commodities, which reached 6.06 percent. In 2007-2011, vegetables also had the highest growth percentage of 6.72 percent. One of vegetable commodities that have the potential to be developed is bell peppers. The demand for bell peppers, both in the local market as well as export markets, is higher than the supply. It is a chance to most entrepreneur to start and grown the cultivation of bell peppers. But, the high of investment can be obstruction to run the cultivation of bell peppers. Therefore the feasibility analysis of hydroponic bell peppers is needed to know how much the business can give profit for the entrepreneurs. Firm which has many experiences in the cultivation of bell peppers is Saung Mirwan. The company has been running the bell peppers cultivation since the 1990’s. Therefore, a production farm of Saung Mirwan can be referenced for the entrepreneurs who want to entry the business of bell peppers cultivation. This study is analyzed the cultivation of bell peppers with hydroponic and drip irrigation systems. The purpose of this study was (1) analyzed the non-financial feasibility of the hydroponic bell peppers in Saung Mirwan, (2) analyzed the financial feasibility of hydroponic bell peppers in Saung Mirwan, (3) analyzed the sensitivity of hydroponic bell peppers in Saung Mirwan with changes the decreased in the prices output, declined in the number of bell peppers production, and increased in the price of nutrients. The research was conducted in the production farm of Saung Mirwan from October 2010 until February 2011. This study uses qualitative and quantitative analysis as methods to explain the analysis of non-financial and financial aspects in the business of hydroponic bell peppers. The result of the feasibility analysis indicate that the market, technical, management, social, economic and cultural, and environmental aspect of hydroponic cultivation of bell peppers is feasible. The financial aspects analysis stated the hydroponic bell peppers cultivation is feasible with the value of Rp 9.9 billion of NPV, IRR of 34.18 percent, Net B/C of 3.76, and payback period for 5 years. Switching value analysis results show that the business unfeasible if the bell peppers prices is decreased more than 49.65 percent, the number of bell peppers production decline more than 49.65 percent, and the price of nutrients increased more than 427.90 percent. This shows that the feasibility of hydroponic bell peppers is more sensitive to decreasing price of output and the declining of production rather than increasing in the price of nutrition.
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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