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: Analisis kelayakan pengusahaan paprika hidroponik : Studi kasus PT Triple A Horticulture Agribisnis Farming and Trading, desa Cibeureum, kecamatan Cisarua, kabupaten Bogor, Jawa Barat
Abstrak: Paprika merupakan salah satu sayuran yang memiliki prospek yang cerah. Peluang pasar luar negeri masih terbuka lebar karena pasokannya kurang. Tehnik budidaya secara hidroponik merupakan salah satu alternatif untuk meningkatkan produksi pada kondisi lahan yang semakin sempit sebagai akibat dari konversi lahan pertanian untuk kawasan industri dan pemukiman. Pengusahaan sayuran secara hidroponik membutuhkan modal yang relatif besar, karena dibutuhkan sarana-sarana fisik, seperti greenhouse, sistem irigasi, nutrisi, dan sarana-sarana pendukung lainnya. Agar modal yang tersedia untuk kegiatan ini dapat dialokasikan secara optimal maka perlu dilakukan suatu analisis kelayakan investasi. Tujuan dari penelitian ini adalah mengkaji keragaan pengusahaan paprika secara hidroponik, menganalisis kelayakan investasi pengusahaan paprika secara hidroponik dan menguji dengan analisis sensitivitas kondisi kelayakan pengusahaan paprika secara hidroponik jika terjadi perubahan dalam komponen manfaat dan biaya. Penelitian ini dilaksanakan di PT Triple A Horticulture Agribis Farming and Trading, Desa Cibeureum, Kecamatan Cisarua, Kabupaten Bogor, Jawa Barat. Data yang digunakan berupa data primer dan sekunder. Analisis data dalam penelitian ini dilakukan secara kualitatif dan kuantitatif. Analisis kualitatif digunakan untuk mengkaji keragaan pengusahaan paprika secara hidroponik, sedangkan analisis kuantitatif digunakan untuk menganalisis kelayakan usaha tersebut berdasarkan kriteria NPV, IRR dan Net B/C serta Payback Period. Analisis sensitivitas juga digunakan untuk melihat sensitivitas usaha budidaya paprika hidroponik terhadap berbagai perubahan.
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Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix