Invented in the 1960’s, permutation codes have reemerged in recent years as a topic of great interest because of properties making them attractive for certain modern technological applications. In 2011 a decoding method called LP (linear programming) decoding was introduced for a class of permutation codes with a Euclidean distance induced metric. In this paper we comparatively analyze the Eucl...

evapotranspiration is one of the most important components of the hydrological cycle which is directly influenced by atmospheric conditions. this study investigated annual and seasonal trends in reference evapotranspiration (et0) and its key influencing climatic variables during 1966-2005 at 10 stations in southern iran (with centrality of fars province). first, multivariate regression analysis...

Generalized additive models are increasingly used to identify and describe environmental trends. A major advantage of these models, as compared simpler statistical tools such linear regression or Mann-Kendall tests, is that they provide estimates prevailing levels trend magnitudes at any given point in time instead an overall measure. For multiple series, this versatility has be followed by fle...

This dissertation studies the least squares estimator of a trend parameter in a simple linear regression model with multiple changepoints when the changepoint times are known. The error component in the model is allowed to be autocorrelated. The least squares estimator of the trend and the variance of the trend estimator are derived. Consistency and asymptotic normality of the trend estimator a...

We propose one parametric and one non-parametric method for detection of monotone trends in nutrient concentrations in brackish waters. Both methods take into account that temporal variation in the quality of such waters can be strongly influenced by mixing of salt and fresh water, thus salinity is used as a classification variable in the trend analysis. With the non-parametric approach, Mann-K...

An analogy between celebrated Kendall equation for busy periods in the system M |GI|1 and analytical results for busy periods in the priority systemsMr|GIr |1 is drawn. These results can be viewed as generalizations of the functional Kendall equation. The methodology and algorithms of numerical solution of recurrent functional equations which appear in the analysis of such queueing systems are ...

An auto manufacturer was interested in pricing strategies for a new vehicle it plans to introduce in the coming year. The analysis that follows considers how other manufacturers price their vehicles. The analysis begins with the correlation of price with certain features of the vehicle, particularly those relating to its performance. Among the predictors, the displacement measures the size of t...