This paper demonstrates how, without mechanically applying any formula like Nelson-Siegel or Nelson-Siegel-Svensson straight cut, a short term yield curve can intuitively be constructed with traded securities and then plugging the gaps with regression and cubic splines on case by case basis,...

In this paper, we present a multi-factor continuous-time autoregressive moving-average (CARMA) model for the short and forward interest rates. This model is able to present an adequate statistical description of the short and forward rate dynamics. We show that this is a tractable term structure...

In finance, the price of an American option is obtained from the price of the underlying asset by solving a parabolic variational inequality. The calibration of volatility from the prices of a family of American options yields an inverse problem involving the solution of the previously mentioned...

A mathematical model for vertical extrapolation of the measurement data for wind speed taken at several measurement heights is presented. The model is based on the method of least squares (LES). By applying the proposed model on the sets of measured data taken at least at three measurement...

In this article we try to determine whether there is a relation between the quantity of athmospheric methane and the number of diseases of circulatory system, at the level of the whole country.We first analyze the time series of the quantity of pollutant between 1990 and 2008 and then we predict...

We reconstruct the published year of each cuneiform tablet of the Nuzi society in ancient Mesopotamia. The tablets are on land transaction, marriage, loan, slavery contracts, etc. The number of tablets seems to increase by logistic growth. It may show the dynamics of concentration of lands or...

Determining the trend of fiscal pressure in Romania with analytical methods requires calculating the linear trend, the parabolic and the modified exponential one using the least square method. Then, with the help of absolute deviations between empirical and theoretical values will choose the...

The causality between the number of companies that are transacted in the Istanbul Stock Exchange market and economic growth in Turkish economy has been analyzed in this study. The analysis covers the 23 years between 1986 and 2009. The study shows that the number of new firms transacted in the...

We review the main changes in the interbank market after the financial crisis started in August 2007. In particular, we focus on the fixed income market and we analyse the most relevant empirical evidences regarding the divergence of the existing basis between interbank rates with different...