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: Produksi dan Konsumsi Komoditi Pangan Strategis Serta Implikasinya Terhadap Swasembada Nasional
Abstrak: Agriculture Ministry plans to revise the strategic roadmap self-sufficiency of food commodities such as rice, corn, and soybeans. Roadmap target is impossible to achieve as real production of each commodity is less than the target. The purpose of this study is related to self-sufficiency by 2014 projections and analyzes the factors that influence the production and consumption of strategic food commodities. The analysis was performed by multiple regression and time series forecasting. From the research, in general all projections of strategic commodities has not hit the target as the Ministry of Agriculture roadmap. Based on a projection of production and consumption in 2014, commodity that achieve self-sufficient are rice and maize. However, soybean has not been self-sufficient in 2014. The results of the regression analysis concluded that not all of the hypothesized predictor variables significant influence on the production and consumption of strategic food commodities. Variables that affect all commodity production are harvested acreage and R & D budgets. While the variables that affect all commodity consumption is the total population. Policy implications that need to be taken related to an increase in self-sufficiency and self-sustained, among others : the expansion of harvest area, the increase in R & D budgets, and a reduction in consumption per capita.
Keyword: self-sufficiency, production, food commodities, Consumption

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