Optimal Design of Acceptance Sampling Plans by Variables for Nonconforming Proportions When the Standard Deviation Is Unknown Belmiro P.M. Duarte a & Pedro M. Saraiva b a Department of Chemical and Biological Engineering, Instituto Superior de Engenharia de Coimbra (ISEC), Polytechnic Institute of Coimbra, Coimbra, Portugal b GEPSI PSE Group, Chemical Process Engineering and Forest Products Res...

In the common trigonometric regression model we investigate the optimal design problem for the estimation of the individual coeecients, where the explanatory variable varies in the interval ?a; a]; 0 < a : It is demonstrated that the structure of the optimal design depends sensitively on the size of the design space. For many cases optimal designs can be found explicitly, where the complexity o...

The aim of this paper is determination of an optimal policy rule for Iranian economy from an Islamic perspective. This study draws on an Islamic instrument known as the Musharakah contract to design a dynamic stochastic general equilibrium model. In this model the interest rate is no longer considered as a monetary policy instrument and the focus is on the impact of economic shocks on the Dynam...

The optimal design of electric distribution networks has been usually carried out by the minimization of a single objective function representing the economic costs of the system planning, including the optimal size and/or location of the feeders and/or substations of the power system. Usually, such objective function is subject to a set of technical constraints (Kirchhoff ́s current law constra...

For the heat equation on a bounded subdomain Ω of R, we investigate the optimal shape and location of the observation domain in observability inequalities. A new decomposition of L(R) into heat packets allows us to remove the randomization procedure and assumptions on the geometry of Ω in previous works. The explicit nature of the heat packets gives new information about the observability const...

Article history: Received 14 August 2009 Received in revised form 9 December 2009 Accepted 18 December 2009 Available online 21 January 2010