Judul: Analisis Produksi dan Konsumsi Kedelai Domestik dalam Rangka Mencapai Swasembada Kedelai di Indonesia
Abstrak: Crops are used as the main focus of the food self-sufficiency target in 2014 are rice, corns, and soybeans. Rice and corns have been in self-sufficiency position, while soybeans have not been yet. In 2011, the domestic soybeans were only able to meet 29 percent of the soybeans demand, and the remaining, 71 percent were filled by the imported soybeans. Besides that, the soybeans demand will continue to increase along with the development of tecnology and knowledge, and the increasing population and income. Under these conditions, the purposes of this study were to forecast whether soybeans self-sufficiency in 2014 will be achieved in accordance with the government's target and what strategy should be taken to support the achievement of self-sufficiency in soybeans. The Projection covered forecasting of production and consumption domestic soybeans using ARIMA (Autoregressive Integrated Moving Average). The forecasting results explained that Indonesia had not been able to achieve soybeans self-sufficiency in 2014. Forecasting of production domestic soybeans were 672.020 tons, while consumption domestic soybeans were 2.661.406 tons. It needed strategy increasing domestic soybeans production to meet the need of soybeans consumption. Efforts to increase soybeans production could be done by increasing the cultivated area and productivity.
Keyword: Soybeans, Self-Sufficiency, Production, Consumption

Judul: Analisis Peramalan Produksi dan Konsumsi serta Faktor-Faktor yang Memengaruhi Produksi dalam Pencapaian Swasembada Kedelai 2014.
Abstrak: Kedelai merupakan salah satu komoditas pangan utama yang penting untuk dikonsumsi masyarakat. Konsumsi kedelai mengalami kenaikan sepanjang tahun akan tetapi produksi kedelai nasional tidak mampu memenuhi keseluruhan konsumsi tersebut. Pemerintah terpaksa melakukan impor untuk menutupi defisit yang terjadi. Impor terus menerus dalam jumlah yang besar dapat menguras devisa negara serta mengancam ketahanan dan kedaulatan pangan Indonesia. Untuk memutus ketergantungan impor, pemerintah mencanangkan program swasembada kedelai 2014. Peramalan produksi dan konsumsi kedelai diperlukan untuk mengetahui gambaran pencapaian swasembada di masa depan. Hasil ramalan membuktikan bahwa swasembada kedelai belum tercapai tahun 2014 maupun sebelas tahun setelahnya. Analisis terhadap produktivitas, luas panen, harga kedelai dan jagung di tingkat petani, harga benih kedelai, impor kedelai, dan dummy subsidi benih kedelai diperlukan untuk mengetahui faktor-faktor yang memengaruhi produksi kedelai. Semua variabel kecuali variabel dummy yang dianalisis menggunakan metode regresi berganda menunjukkan hasil berpengaruh nyata pada taraf kepercayaan 90%. Untuk mengetahui seberapa besar perubahan masing-masing variabel terhadap produksi kedelai maka dapat dilihat dari nilai elastisitas produksi. Hubungan elastis ditunjukkan oleh masing-masing variabel produktivitas dan luas panen terhadap produksi kedelai. Sedangkan harga riil kedelai di tingkat petani, harga riil jagung di tingkat petani, harga benih kedelai, dan impor kedelai menunjukkan hubungan inelastis terhadap produksi kedelai.
Keyword: kedelai, konsumsi, produksi, swasembada

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology