A generalised minimum variance controller is developed for linear time-varying systems. The plants to be controlled are described using a controlled autoregressive moving average model and are exponentially stable. Both, the plant parameters and the noise variance are time-varying. The generalised minimum variance cost functional is the sum of a tracking error variance between a filtered plant ...

The purpose of this paper is to introduce a bivariate Lévy process constructed by subordination of a Brownian motion with independent components by a bivariate subordinator. A class of subordinated processes extensively studied in finance is the Variance Gamma one. They have been first introduced in literature by Madan and Seneta [5], [2], as models for stocks return. Let B̃ be a Brownian motion...

We analyse the all-pay auction with incomplete information and variance-averse bidders. We characterise the symmetric equilibrium for general distributions of valuations and any number of bidders. Variance aversion is a sufficient assumption to predict that high-valuation bidders increase their bids relative to the risk-neutral case while low types decrease their bid. Considering an asymmetric ...

Software product lines are widely used to efficiently develop similar variants of a software. In automotive software development, they are often implemented based on the C preprocessor. Even tools for model based development generate such code. The advantage of the preprocessor approach is that only the needed code ends up in the control unit. This way, resource consumption is minimized. On the...

Kish’s (1962) classical intra-interviewer correlation (ρint) provides survey researchers with an estimate of the effect of interviewers on variation in measurements of a survey variable of interest. This correlation is an undesirable product of the data collection process that can arise when answers from respondents interviewed by the same interviewer are more similar to each other than answers...

the present study is an attempt toward evaluating the performance of portfolios and assets selecting using modified mean-variance models by utilizing a non-parametric efficiency analysis tool, namely data envelopment analysis (dea). huge amounts of money are being invested in financial market. as a result, portfolio performance evaluation has created a great deal of interest among people. we kn...

Nutritional environments, particularly those experienced during early life, are hypothesized to affect longevity. A recent cross-taxa meta-analysis found that, depending upon circumstance, average longevity may be increased or decreased by early-life dietary restriction. Unstudied are the effects of diet during development on among-individual variance in longevity. Here, we address this issue u...