Judul: Factors Affecting Production and Income of Ginger in Center Java
Abstrak: Jahe merupakan komoditas biofarmaka unggulan sebagai bahan baku Industri Obat Tradisional. Namun perkembangan produktivitas jahe pada enam tahun terakhir cenderung menurun. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang memengaruhi produksi dan pendapatan usahatani jahe. Analisis faktor produksi akan dianalisis menggunakan model fungsi produksi Cobb-Douglas dan pendapatan usahatani menggunakan analisis pendapatan dan R/C ratio . Hasil penelitian menunjukkan bahwa faktor yang berpengaruh nyata meningkatkan produksi jahe adalah benih, pupuk kimia, pupuk organik, tenaga kerja dan dummy pola tanam monokultur-tumpang sari. Usahatani jahe yang dijalankan oleh petani di Jawa Tengah menguntungkan karena memperoleh pendapatan yang bernilai positif. Apabila dilihat berdasarkan luas lahan, usahatani yang dijalankan pada lahan sempit memperoleh pendapatan lebih tinggi dibandingkan dengan usahatani lahan luas, namun memberikan R/C ratio lebih rendah. Apabila dilihat berdasarkan pola tanam, usahatani monokultur memperoleh pendapatan lebih tinggi dibandingkan dengan usahatani tumpang sari., Ginger is a leading biopharmaceutical commodity as a raw material for the Traditional Medicine Industry. However, the development of ginger productivity in the last six years tends to decline. This study aims to determine the factors that affect the production, and income of ginger farming. Production factor analysis was analyzed using the Cobb-Douglas production function model. Farm income is analyzed using income analysis, and the R/C ratio is differentiated according to plant area and cropping pattern. The analysis showed that the factors that significantly affected ginger production were seeds, chemical fertilizers, organic fertilizers, labor, and dummy cropping patterns of monoculture-double cropping. Ginger farming, which farmers run in Central Java is profitable because it gets a positive income. When viewed based on the plan area, farms run on narrow learn higher income compared to large land farming, but provide a lower R/C ratio. When viewed based on cropping patterns, monoculture farming earns higher income compared to double cropping farming.
Keyword: ginger, income, production

Judul: Factors Affecting Production and Income of Ginger in Center Java
Abstrak: Jahe merupakan komoditas biofarmaka unggulan sebagai bahan baku Industri Obat Tradisional. Namun perkembangan produktivitas jahe pada enam tahun terakhir cenderung menurun. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang memengaruhi produksi dan pendapatan usahatani jahe. Analisis faktor produksi akan dianalisis menggunakan model fungsi produksi Cobb-Douglas dan pendapatan usahatani menggunakan analisis pendapatan dan R/C ratio . Hasil penelitian menunjukkan bahwa faktor yang berpengaruh nyata meningkatkan produksi jahe adalah benih, pupuk kimia, pupuk organik, tenaga kerja dan dummy pola tanam monokultur-tumpang sari. Usahatani jahe yang dijalankan oleh petani di Jawa Tengah menguntungkan karena memperoleh pendapatan yang bernilai positif. Apabila dilihat berdasarkan luas lahan, usahatani yang dijalankan pada lahan sempit memperoleh pendapatan lebih tinggi dibandingkan dengan usahatani lahan luas, namun memberikan R/C ratio lebih rendah. Apabila dilihat berdasarkan pola tanam, usahatani monokultur memperoleh pendapatan lebih tinggi dibandingkan dengan usahatani tumpang sari., Ginger is a leading biopharmaceutical commodity as a raw material for the Traditional Medicine Industry. However, the development of ginger productivity in the last six years tends to decline. This study aims to determine the factors that affect the production, and income of ginger farming. Production factor analysis was analyzed using the Cobb-Douglas production function model. Farm income is analyzed using income analysis, and the R/C ratio is differentiated according to plant area and cropping pattern. The analysis showed that the factors that significantly affected ginger production were seeds, chemical fertilizers, organic fertilizers, labor, and dummy cropping patterns of monoculture-double cropping. Ginger farming, which farmers run in Central Java is profitable because it gets a positive income. When viewed based on the plan area, farms run on narrow learn higher income compared to large land farming, but provide a lower R/C ratio. When viewed based on cropping patterns, monoculture farming earns higher income compared to double cropping farming.
Keyword: ginger, income, production

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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