One of the problems faced by Indonesian farmers is the fluctuation of paddy grain price. The price is at the lowest point during the harvest season and at the highest point in the planting season. To solve this problem, ...

Fertility is an important factor in population projection beside mortality and migration. Unfortunately, in most countries, especially in underdeveloped countries, the direct measurement of fertility is difficult to obtain ...

Stock may produce high profits. However, it has a high risk as well, because the stock prices fluctuate over time. Therefore, a model is required to estimate the future stock prices accurately. In this paper, Lévy model ...

Optimization is a branch of applied mathematics, which studies problems is order to find the maximum or minimum value of a function that satisfies certain constraints. Especially, a linear optimization studies things that ...

Interest rate is one of important factors that used to adopt investment decisions. One of investment types is the bond. In reality, the interest rate must not negative. This research, introduces an interest rate model which ...

One of the problems in determining an optimal route is the well-known Chinese Postman Problem (CPP). Among many kinds of CPP, this work discusses the mixed one (MCPP), where the representing graph has two types of edge: ...

The method of least squares is a parameter estimation method which is most commonly used to estimate the value the parameters of a model based on some observation data in a way that minimizes the error sum of squares. The ...

On some applications of linear programming problems (LP), the coefficient on the model often can not be determined precisely. One method to solve this LP problem is to use an interval approach, where uncertain coefficients ...

Data Envelopment Analysis (DEA) is a tool which is used to measure and compare the performance of Decision Making Units (DMU). DEA has been applied in many fields, such as banks, hospitals and schools. This paper measures ...

Knowledge is an important factor in human life. Knowledge can be obtained from various sources and one of them is from a text. The text used in this study is Indonesian text on food security. To gain knowledge in the text, ...