Vidhi Thakkar and Terrence Sullivan have done a careful and thought-provoking job in trying to establish comparable estimates of public spending on health services and policy research (HSPR) in Canada, the United Kingdom and the United States. Their main recommendation is a call for an international collaboration to develop common terms and categories of HSPR. This paper raises two additional q...

A b s t r a c t. Several results are obtained concerning the function ∆ k (x), which represents the error term in the general Dirichlet divisor problem. These include the estimates for the integral of this function, as well as for the corresponding mean square integral. The mean square integral of ∆ 2 (x) is investigated in detail.

Long-term agricultural field experiments are essential for quantifying changes in soil properties and associated crop productivity that occur slowly but continue over long periods. Initiated 1894 the South of Denmark, Askov long-term experiment (LTE) is among few LTEs world continued more than 125 years. The compares different rates nitrogen, phosphorus, potassium applied mineral fertilizers or...

This paper deals with state estimation of micro tunable capacitor subjected to nonlinear electrostatic force. For this end a nonlinear observer has been designed for state estimation of the structure.  Necessary and sufficient conditions for construction of the observer are presented. Stability of the observer is checked using Lyapunov theorem. Observer design is based on converting of differen...